From 127bf556c7db243c635d8cc117735f8317e0db7b Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Mon, 17 Jun 2019 12:49:21 +0200
Subject: [PATCH] Merge audio_driver.c into retroarch.c

---
 Makefile.common                     |    1 -
 audio/audio_driver.c                | 1861 ---------------------------
 audio/audio_driver.h                |  319 -----
 audio/audio_thread_wrapper.h        |    2 +-
 audio/drivers/alsa.c                |    2 +-
 audio/drivers/alsa_qsa.c            |    2 +-
 audio/drivers/alsathread.c          |    2 +-
 audio/drivers/audioio.c             |    2 +-
 audio/drivers/coreaudio.c           |    2 +-
 audio/drivers/coreaudio3.m          |    2 +-
 audio/drivers/ctr_csnd_audio.c      |    2 +-
 audio/drivers/ctr_dsp_audio.c       |    2 +-
 audio/drivers/dsound.c              |    2 +-
 audio/drivers/gx_audio.c            |    2 +-
 audio/drivers/jack.c                |    2 +-
 audio/drivers/nullaudio.c           |    2 +-
 audio/drivers/openal.c              |    2 +-
 audio/drivers/opensl.c              |    2 +-
 audio/drivers/oss.c                 |    2 +-
 audio/drivers/ps2_audio.c           |    2 +-
 audio/drivers/ps3_audio.c           |    2 +-
 audio/drivers/psp_audio.c           |    2 +-
 audio/drivers/pulse.c               |    2 +-
 audio/drivers/roar.c                |    2 +-
 audio/drivers/rsound.c              |    2 +-
 audio/drivers/rwebaudio.c           |    2 +-
 audio/drivers/sdl_audio.c           |   12 +-
 audio/drivers/switch_audio.c        |    2 +-
 audio/drivers/switch_thread_audio.c |    2 +-
 audio/drivers/tinyalsa.c            |    2 +-
 audio/drivers/wasapi.c              |    2 +-
 audio/drivers/wiiu_audio.c          |    6 +-
 audio/drivers/xaudio.c              |    2 +-
 audio/drivers/xenon360_audio.c      |    2 +-
 command.c                           |    1 -
 configuration.c                     |    1 -
 core_impl.c                         |    2 +-
 dynamic.c                           |    1 -
 frontend/drivers/platform_ctr.c     |    1 -
 frontend/drivers/platform_switch.c  |    4 +-
 gfx/video_driver.c                  |    1 -
 griffin/griffin.c                   |    1 -
 list_special.c                      |    1 -
 managers/state_manager.c            |    1 -
 menu/cbs/menu_cbs_get_value.c       |    1 -
 menu/cbs/menu_cbs_left.c            |    1 -
 menu/cbs/menu_cbs_ok.c              |    1 -
 menu/cbs/menu_cbs_right.c           |    1 -
 menu/cbs/menu_cbs_start.c           |    1 -
 menu/cbs/menu_cbs_sublabel.c        |   11 +-
 menu/cbs/menu_cbs_title.c           |    4 +-
 menu/menu_displaylist.c             |    1 -
 menu/menu_driver.h                  |    2 +-
 menu/menu_setting.c                 |    1 -
 retroarch.c                         | 1793 +++++++++++++++++++++++++-
 retroarch.h                         |  262 ++++
 runahead/run_ahead.c                |    1 -
 tasks/task_audio_mixer.c            |    3 +-
 tasks/task_audio_mixer.h            |    2 +-
 59 files changed, 2105 insertions(+), 2251 deletions(-)
 delete mode 100644 audio/audio_driver.c
 delete mode 100644 audio/audio_driver.h

diff --git a/Makefile.common b/Makefile.common
index 31e61bf99f..cdb17952b4 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -205,7 +205,6 @@ OBJ += frontend/frontend.o \
        file_path_special.o \
        file_path_str.o \
        $(LIBRETRO_COMM_DIR)/hash/rhash.o \
-       audio/audio_driver.o \
        $(LIBRETRO_COMM_DIR)/audio/audio_mixer.o \
        input/common/input_hid_common.o \
        input/input_driver.o \
diff --git a/audio/audio_driver.c b/audio/audio_driver.c
deleted file mode 100644
index f432dd1e16..0000000000
--- a/audio/audio_driver.c
+++ /dev/null
@@ -1,1861 +0,0 @@
-/*  RetroArch - A frontend for libretro.
- *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
- *  Copyright (C) 2011-2017 - Daniel De Matteis
- *
- *  RetroArch is free software: you can redistribute it and/or modify it under the terms
- *  of the GNU General Public License as published by the Free Software Found-
- *  ation, either version 3 of the License, or (at your option) any later version.
- *
- *  RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- *  PURPOSE.  See the GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License along with RetroArch.
- *  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <string.h>
-
-#include <retro_assert.h>
-
-#include <lists/string_list.h>
-#include <audio/conversion/float_to_s16.h>
-#include <audio/conversion/s16_to_float.h>
-#include <audio/audio_resampler.h>
-#include <audio/dsp_filter.h>
-#include <file/file_path.h>
-#include <lists/dir_list.h>
-#include <string/stdstring.h>
-#include <streams/file_stream.h>
-
-#ifdef HAVE_CONFIG_H
-#include "../config.h"
-#endif
-
-#include "audio_driver.h"
-#include "audio_thread_wrapper.h"
-#include "../gfx/video_driver.h"
-#include "../record/record_driver.h"
-#include "../frontend/frontend_driver.h"
-#include "../tasks/task_audio_mixer.h"
-#include "../tasks/tasks_internal.h"
-
-#include "../command.h"
-#include "../driver.h"
-#include "../configuration.h"
-#include "../retroarch.h"
-#include "../verbosity.h"
-#include "../list_special.h"
-#include "../file_path_special.h"
-#include "../content.h"
-
-#define AUDIO_BUFFER_FREE_SAMPLES_COUNT (8 * 1024)
-
-#define MENU_SOUND_FORMATS "ogg|mod|xm|s3m|mp3|flac"
-
-/**
- * db_to_gain:
- * @db          : Decibels.
- *
- * Converts decibels to voltage gain.
- *
- * Returns: voltage gain value.
- **/
-#define db_to_gain(db) (powf(10.0f, (db) / 20.0f))
-
-static const audio_driver_t *audio_drivers[] = {
-#ifdef HAVE_ALSA
-   &audio_alsa,
-#if !defined(__QNX__) && defined(HAVE_THREADS)
-   &audio_alsathread,
-#endif
-#endif
-#ifdef HAVE_TINYALSA
-	&audio_tinyalsa,
-#endif
-#if defined(HAVE_AUDIOIO)
-   &audio_audioio,
-#endif
-#if defined(HAVE_OSS) || defined(HAVE_OSS_BSD)
-   &audio_oss,
-#endif
-#ifdef HAVE_RSOUND
-   &audio_rsound,
-#endif
-#ifdef HAVE_COREAUDIO
-   &audio_coreaudio,
-#endif
-#ifdef HAVE_COREAUDIO3
-   &audio_coreaudio3,
-#endif
-#ifdef HAVE_AL
-   &audio_openal,
-#endif
-#ifdef HAVE_SL
-   &audio_opensl,
-#endif
-#ifdef HAVE_ROAR
-   &audio_roar,
-#endif
-#ifdef HAVE_JACK
-   &audio_jack,
-#endif
-#if defined(HAVE_SDL) || defined(HAVE_SDL2)
-   &audio_sdl,
-#endif
-#ifdef HAVE_XAUDIO
-   &audio_xa,
-#endif
-#ifdef HAVE_DSOUND
-   &audio_dsound,
-#endif
-#ifdef HAVE_WASAPI
-   &audio_wasapi,
-#endif
-#ifdef HAVE_PULSE
-   &audio_pulse,
-#endif
-#ifdef __CELLOS_LV2__
-   &audio_ps3,
-#endif
-#ifdef XENON
-   &audio_xenon360,
-#endif
-#ifdef GEKKO
-   &audio_gx,
-#endif
-#ifdef WIIU
-   &audio_ax,
-#endif
-#ifdef EMSCRIPTEN
-   &audio_rwebaudio,
-#endif
-#if defined(PSP) || defined(VITA) || defined(ORBIS)
-  &audio_psp,
-#endif
-#if defined(PS2)
-  &audio_ps2,
-#endif
-#ifdef _3DS
-   &audio_ctr_csnd,
-   &audio_ctr_dsp,
-#endif
-#ifdef SWITCH
-   &audio_switch_thread,
-   &audio_switch,
-#endif
-   &audio_null,
-   NULL,
-};
-
-static struct audio_mixer_stream audio_mixer_streams[AUDIO_MIXER_MAX_SYSTEM_STREAMS] = {{0}};
-
-static size_t audio_driver_chunk_size                    = 0;
-static size_t audio_driver_chunk_nonblock_size           = 0;
-static size_t audio_driver_chunk_block_size              = 0;
-
-static size_t audio_driver_rewind_ptr                    = 0;
-static size_t audio_driver_rewind_size                   = 0;
-
-static int16_t *audio_driver_rewind_buf                  = NULL;
-static int16_t *audio_driver_output_samples_conv_buf     = NULL;
-
-static unsigned audio_driver_free_samples_buf[AUDIO_BUFFER_FREE_SAMPLES_COUNT];
-static uint64_t audio_driver_free_samples_count          = 0;
-
-static size_t audio_driver_buffer_size                   = 0;
-static size_t audio_driver_data_ptr                      = 0;
-
-static bool audio_driver_control                         = false;
-static bool audio_driver_mixer_mute_enable               = false;
-static bool audio_driver_mute_enable                     = false;
-static bool audio_driver_use_float                       = false;
-static bool audio_driver_active                          = false;
-static bool audio_mixer_active                           = false;
-
-static float audio_driver_rate_control_delta             = 0.0f;
-static float audio_driver_input                          = 0.0f;
-static float audio_driver_volume_gain                    = 0.0f;
-static float audio_driver_mixer_volume_gain              = 0.0f;
-
-static float *audio_driver_input_data                    = NULL;
-static float *audio_driver_output_samples_buf            = NULL;
-
-static double audio_source_ratio_original                = 0.0f;
-static double audio_source_ratio_current                 = 0.0f;
-
-static struct retro_audio_callback audio_callback        = {0};
-
-static retro_dsp_filter_t *audio_driver_dsp              = NULL;
-static struct string_list *audio_driver_devices_list     = NULL;
-static const retro_resampler_t *audio_driver_resampler   = NULL;
-
-static void *audio_driver_resampler_data                 = NULL;
-static const audio_driver_t *current_audio               = NULL;
-static void *audio_driver_context_audio_data             = NULL;
-
-static bool audio_suspended                              = false;
-static bool audio_is_threaded                            = false;
-
-static void audio_mixer_play_stop_sequential_cb(
-      audio_mixer_sound_t *sound, unsigned reason);
-static void audio_mixer_play_stop_cb(
-      audio_mixer_sound_t *sound, unsigned reason);
-static void audio_mixer_menu_stop_cb(
-      audio_mixer_sound_t *sound, unsigned reason);
-
-static enum resampler_quality audio_driver_get_resampler_quality(void)
-{
-   settings_t *settings = config_get_ptr();
-
-   if (!settings)
-      return RESAMPLER_QUALITY_DONTCARE;
-
-   return (enum resampler_quality)settings->uints.audio_resampler_quality;
-}
-
-audio_mixer_stream_t *audio_driver_mixer_get_stream(unsigned i)
-{
-   if (i > (AUDIO_MIXER_MAX_SYSTEM_STREAMS-1))
-      return NULL;
-   return &audio_mixer_streams[i];
-}
-
-const char *audio_driver_mixer_get_stream_name(unsigned i)
-{
-   if (i > (AUDIO_MIXER_MAX_SYSTEM_STREAMS-1))
-      return "N/A";
-   if (!string_is_empty(audio_mixer_streams[i].name))
-      return audio_mixer_streams[i].name;
-   return "N/A";
-}
-
-/**
- * compute_audio_buffer_statistics:
- *
- * Computes audio buffer statistics.
- *
- **/
-bool compute_audio_buffer_statistics(audio_statistics_t *stats)
-{
-   unsigned i, low_water_size, high_water_size, avg, stddev;
-   uint64_t accum                = 0;
-   uint64_t accum_var            = 0;
-   unsigned low_water_count      = 0;
-   unsigned high_water_count     = 0;
-   unsigned samples              = MIN(
-         (unsigned)audio_driver_free_samples_count,
-         AUDIO_BUFFER_FREE_SAMPLES_COUNT);
-
-   if (!stats || samples < 3)
-      return false;
-
-   stats->samples                = (unsigned)audio_driver_free_samples_count;
-
-#ifdef WARPUP
-   /* uint64 to double not implemented, fair chance
-    * signed int64 to double doesn't exist either */
-   /* https://forums.libretro.com/t/unsupported-platform-help/13903/ */
-   (void)stddev;
-#elif defined(_MSC_VER) && _MSC_VER <= 1200
-   /* FIXME: error C2520: conversion from unsigned __int64
-    * to double not implemented, use signed __int64 */
-   (void)stddev;
-#else
-   for (i = 1; i < samples; i++)
-      accum += audio_driver_free_samples_buf[i];
-
-   avg = (unsigned)accum / (samples - 1);
-
-   for (i = 1; i < samples; i++)
-   {
-      int diff     = avg - audio_driver_free_samples_buf[i];
-      accum_var   += diff * diff;
-   }
-
-   stddev                                = (unsigned)
-      sqrt((double)accum_var / (samples - 2));
-
-   stats->average_buffer_saturation      = (1.0f - (float)avg
-         / audio_driver_buffer_size) * 100.0;
-   stats->std_deviation_percentage       = ((float)stddev
-         / audio_driver_buffer_size)  * 100.0;
-#endif
-
-   low_water_size  = (unsigned)(audio_driver_buffer_size * 3 / 4);
-   high_water_size = (unsigned)(audio_driver_buffer_size     / 4);
-
-   for (i = 1; i < samples; i++)
-   {
-      if (audio_driver_free_samples_buf[i] >= low_water_size)
-         low_water_count++;
-      else if (audio_driver_free_samples_buf[i] <= high_water_size)
-         high_water_count++;
-   }
-
-   stats->close_to_underrun      = (100.0 * low_water_count)  / (samples - 1);
-   stats->close_to_blocking      = (100.0 * high_water_count) / (samples - 1);
-
-   return true;
-}
-
-static void report_audio_buffer_statistics(void)
-{
-   audio_statistics_t audio_stats = {0.0f};
-   if (!compute_audio_buffer_statistics(&audio_stats))
-      return;
-
-#ifdef DEBUG
-   RARCH_LOG("[Audio]: Average audio buffer saturation: %.2f %%,"
-         " standard deviation (percentage points): %.2f %%.\n"
-         "[Audio]: Amount of time spent close to underrun: %.2f %%."
-         " Close to blocking: %.2f %%.\n",
-         audio_stats.average_buffer_saturation,
-         audio_stats.std_deviation_percentage,
-         audio_stats.close_to_underrun,
-         audio_stats.close_to_blocking);
-#endif
-}
-
-/**
- * audio_driver_find_handle:
- * @idx                : index of driver to get handle to.
- *
- * Returns: handle to audio driver at index. Can be NULL
- * if nothing found.
- **/
-const void *audio_driver_find_handle(int idx)
-{
-   const void *drv = audio_drivers[idx];
-   if (!drv)
-      return NULL;
-   return drv;
-}
-
-/**
- * audio_driver_find_ident:
- * @idx                : index of driver to get handle to.
- *
- * Returns: Human-readable identifier of audio driver at index. Can be NULL
- * if nothing found.
- **/
-const char *audio_driver_find_ident(int idx)
-{
-   const audio_driver_t *drv = audio_drivers[idx];
-   if (!drv)
-      return NULL;
-   return drv->ident;
-}
-
-/**
- * config_get_audio_driver_options:
- *
- * Get an enumerated list of all audio driver names, separated by '|'.
- *
- * Returns: string listing of all audio driver names, separated by '|'.
- **/
-const char *config_get_audio_driver_options(void)
-{
-   return char_list_new_special(STRING_LIST_AUDIO_DRIVERS, NULL);
-}
-
-static bool audio_driver_deinit_internal(void)
-{
-   settings_t *settings = config_get_ptr();
-
-   if (current_audio && current_audio->free)
-   {
-      if (audio_driver_context_audio_data)
-         current_audio->free(audio_driver_context_audio_data);
-      audio_driver_context_audio_data = NULL;
-   }
-
-   if (audio_driver_output_samples_conv_buf)
-      free(audio_driver_output_samples_conv_buf);
-   audio_driver_output_samples_conv_buf = NULL;
-
-   audio_driver_data_ptr                = 0;
-
-   if (audio_driver_rewind_buf)
-      free(audio_driver_rewind_buf);
-   audio_driver_rewind_buf   = NULL;
-
-   audio_driver_rewind_size  = 0;
-
-   if (settings && !settings->bools.audio_enable)
-   {
-      audio_driver_active = false;
-      return false;
-   }
-
-   audio_driver_deinit_resampler();
-
-   if (audio_driver_input_data)
-      free(audio_driver_input_data);
-   audio_driver_input_data = NULL;
-
-   if (audio_driver_output_samples_buf)
-      free(audio_driver_output_samples_buf);
-   audio_driver_output_samples_buf = NULL;
-
-   command_event(CMD_EVENT_DSP_FILTER_DEINIT, NULL);
-
-   report_audio_buffer_statistics();
-
-   return true;
-}
-
-static void audio_driver_mixer_init(unsigned audio_out_rate)
-{
-   audio_mixer_init(audio_out_rate);
-}
-
-static bool audio_driver_init_internal(bool audio_cb_inited)
-{
-   unsigned new_rate     = 0;
-   float   *aud_inp_data = NULL;
-   float *samples_buf    = NULL;
-   int16_t *conv_buf     = NULL;
-   int16_t *rewind_buf   = NULL;
-   size_t max_bufsamples = AUDIO_CHUNK_SIZE_NONBLOCKING * 2;
-   settings_t *settings  = config_get_ptr();
-   /* Accomodate rewind since at some point we might have two full buffers. */
-   size_t outsamples_max = AUDIO_CHUNK_SIZE_NONBLOCKING * 2 * AUDIO_MAX_RATIO *
-      settings->floats.slowmotion_ratio;
-
-   convert_s16_to_float_init_simd();
-   convert_float_to_s16_init_simd();
-
-   conv_buf = (int16_t*)malloc(outsamples_max
-         * sizeof(int16_t));
-   /* Used for recording even if audio isn't enabled. */
-   retro_assert(conv_buf != NULL);
-
-   if (!conv_buf)
-      goto error;
-
-   audio_driver_output_samples_conv_buf = conv_buf;
-   audio_driver_chunk_block_size        = AUDIO_CHUNK_SIZE_BLOCKING;
-   audio_driver_chunk_nonblock_size     = AUDIO_CHUNK_SIZE_NONBLOCKING;
-   audio_driver_chunk_size              = audio_driver_chunk_block_size;
-
-   /* Needs to be able to hold full content of a full max_bufsamples
-    * in addition to its own. */
-   rewind_buf = (int16_t*)malloc(max_bufsamples * sizeof(int16_t));
-   retro_assert(rewind_buf != NULL);
-
-   if (!rewind_buf)
-      goto error;
-
-   audio_driver_rewind_buf              = rewind_buf;
-   audio_driver_rewind_size             = max_bufsamples;
-
-   if (!settings->bools.audio_enable)
-   {
-      audio_driver_active = false;
-      return false;
-   }
-
-   audio_driver_find_driver();
-#ifdef HAVE_THREADS
-   if (audio_cb_inited)
-   {
-      audio_is_threaded = true;
-      RARCH_LOG("[Audio]: Starting threaded audio driver ...\n");
-      if (!audio_init_thread(
-               &current_audio,
-               &audio_driver_context_audio_data,
-               *settings->arrays.audio_device
-               ? settings->arrays.audio_device : NULL,
-               settings->uints.audio_out_rate, &new_rate,
-               settings->uints.audio_latency,
-               settings->uints.audio_block_frames,
-               current_audio))
-      {
-         RARCH_ERR("Cannot open threaded audio driver ... Exiting ...\n");
-         retroarch_fail(1, "audio_driver_init_internal()");
-      }
-   }
-   else
-#endif
-   {
-      audio_is_threaded = false;
-      audio_driver_context_audio_data =
-         current_audio->init(*settings->arrays.audio_device ?
-               settings->arrays.audio_device : NULL,
-               settings->uints.audio_out_rate,
-               settings->uints.audio_latency,
-               settings->uints.audio_block_frames,
-               &new_rate);
-   }
-
-   if (new_rate != 0)
-   {
-      configuration_set_int(settings, settings->uints.audio_out_rate, new_rate);
-   }
-
-   if (!audio_driver_context_audio_data)
-   {
-      RARCH_ERR("Failed to initialize audio driver. Will continue without audio.\n");
-      audio_driver_active = false;
-   }
-
-   audio_driver_use_float = false;
-   if (     audio_driver_active
-         && current_audio->use_float(audio_driver_context_audio_data))
-      audio_driver_use_float = true;
-
-   if (!settings->bools.audio_sync && audio_driver_active)
-   {
-      command_event(CMD_EVENT_AUDIO_SET_NONBLOCKING_STATE, NULL);
-      audio_driver_chunk_size = audio_driver_chunk_nonblock_size;
-   }
-
-   if (audio_driver_input <= 0.0f)
-   {
-      /* Should never happen. */
-      RARCH_WARN("Input rate is invalid (%.3f Hz). Using output rate (%u Hz).\n",
-            audio_driver_input, settings->uints.audio_out_rate);
-      audio_driver_input = settings->uints.audio_out_rate;
-   }
-
-   audio_source_ratio_original   = audio_source_ratio_current =
-      (double)settings->uints.audio_out_rate / audio_driver_input;
-
-   if (!retro_resampler_realloc(
-            &audio_driver_resampler_data,
-            &audio_driver_resampler,
-            settings->arrays.audio_resampler,
-            audio_driver_get_resampler_quality(),
-            audio_source_ratio_original))
-   {
-      RARCH_ERR("Failed to initialize resampler \"%s\".\n",
-            settings->arrays.audio_resampler);
-      audio_driver_active = false;
-   }
-
-   aud_inp_data = (float*)malloc(max_bufsamples * sizeof(float));
-   retro_assert(aud_inp_data != NULL);
-
-   if (!aud_inp_data)
-      goto error;
-
-   audio_driver_input_data = aud_inp_data;
-   audio_driver_data_ptr   = 0;
-
-   retro_assert(settings->uints.audio_out_rate <
-         audio_driver_input * AUDIO_MAX_RATIO);
-
-   samples_buf = (float*)malloc(outsamples_max * sizeof(float));
-
-   retro_assert(samples_buf != NULL);
-
-   if (!samples_buf)
-      goto error;
-
-   audio_driver_output_samples_buf = samples_buf;
-   audio_driver_control            = false;
-
-   if (
-         !audio_cb_inited
-         && audio_driver_active
-         && settings->bools.audio_rate_control
-         )
-   {
-      /* Audio rate control requires write_avail
-       * and buffer_size to be implemented. */
-      if (current_audio->buffer_size)
-      {
-         audio_driver_buffer_size =
-            current_audio->buffer_size(audio_driver_context_audio_data);
-         audio_driver_control     = true;
-      }
-      else
-         RARCH_WARN("Audio rate control was desired, but driver does not support needed features.\n");
-   }
-
-   command_event(CMD_EVENT_DSP_FILTER_INIT, NULL);
-
-   audio_driver_free_samples_count = 0;
-
-   audio_driver_mixer_init(settings->uints.audio_out_rate);
-
-   /* Threaded driver is initially stopped. */
-   if (
-         audio_driver_active
-         && audio_cb_inited
-         )
-      audio_driver_start(false);
-
-   return true;
-
-error:
-   return audio_driver_deinit();
-}
-
-void audio_driver_set_nonblocking_state(bool enable)
-{
-   settings_t *settings = config_get_ptr();
-   if (
-         audio_driver_active
-         && audio_driver_context_audio_data
-      )
-      current_audio->set_nonblock_state(
-            audio_driver_context_audio_data,
-            settings->bools.audio_sync ? enable : true);
-
-   audio_driver_chunk_size = enable ?
-      audio_driver_chunk_nonblock_size :
-      audio_driver_chunk_block_size;
-}
-
-/**
- * audio_driver_flush:
- * @data                 : pointer to audio buffer.
- * @right                : amount of samples to write.
- *
- * Writes audio samples to audio driver. Will first
- * perform DSP processing (if enabled) and resampling.
- **/
-static void audio_driver_flush(const int16_t *data, size_t samples,
-      bool is_slowmotion)
-{
-   struct resampler_data src_data;
-   float audio_volume_gain           = !audio_driver_mute_enable ?
-      audio_driver_volume_gain : 0.0f;
-
-   src_data.data_out                 = NULL;
-   src_data.output_frames            = 0;
-
-   convert_s16_to_float(audio_driver_input_data, data, samples,
-         audio_volume_gain);
-
-   src_data.data_in                  = audio_driver_input_data;
-   src_data.input_frames             = samples >> 1;
-
-   if (audio_driver_dsp)
-   {
-      struct retro_dsp_data dsp_data;
-
-      dsp_data.input                 = NULL;
-      dsp_data.input_frames          = 0;
-      dsp_data.output                = NULL;
-      dsp_data.output_frames         = 0;
-
-      dsp_data.input                 = audio_driver_input_data;
-      dsp_data.input_frames          = (unsigned)(samples >> 1);
-
-      retro_dsp_filter_process(audio_driver_dsp, &dsp_data);
-
-      if (dsp_data.output)
-      {
-         src_data.data_in            = dsp_data.output;
-         src_data.input_frames       = dsp_data.output_frames;
-      }
-   }
-
-   src_data.data_out = audio_driver_output_samples_buf;
-
-   if (audio_driver_control)
-   {
-      /* Readjust the audio input rate. */
-      int      half_size   = (int)(audio_driver_buffer_size / 2);
-      int      avail       =
-         (int)current_audio->write_avail(audio_driver_context_audio_data);
-      int      delta_mid   = avail - half_size;
-      double   direction   = (double)delta_mid / half_size;
-      double   adjust      = 1.0 + audio_driver_rate_control_delta * direction;
-      unsigned write_idx   = audio_driver_free_samples_count++ &
-         (AUDIO_BUFFER_FREE_SAMPLES_COUNT - 1);
-
-      audio_driver_free_samples_buf
-         [write_idx]               = avail;
-      audio_source_ratio_current   =
-         audio_source_ratio_original * adjust;
-
-#if 0
-      if (verbosity_is_enabled())
-      {
-         RARCH_LOG_OUTPUT("[Audio]: Audio buffer is %u%% full\n",
-               (unsigned)(100 - (avail * 100) / audio_driver_buffer_size));
-         RARCH_LOG_OUTPUT("[Audio]: New rate: %lf, Orig rate: %lf\n",
-               audio_source_ratio_current,
-               audio_source_ratio_original);
-      }
-#endif
-   }
-
-   src_data.ratio           = audio_source_ratio_current;
-
-   if (is_slowmotion)
-   {
-      settings_t *settings  = config_get_ptr();
-      src_data.ratio       *= settings->floats.slowmotion_ratio;
-   }
-
-   audio_driver_resampler->process(audio_driver_resampler_data, &src_data);
-
-   if (audio_mixer_active)
-   {
-      bool override     = audio_driver_mixer_mute_enable ? true :
-         (audio_driver_mixer_volume_gain != 1.0f) ? true : false;
-      float mixer_gain  = !audio_driver_mixer_mute_enable ?
-         audio_driver_mixer_volume_gain : 0.0f;
-      audio_mixer_mix(audio_driver_output_samples_buf,
-            src_data.output_frames, mixer_gain, override);
-   }
-
-   {
-      const void *output_data = audio_driver_output_samples_buf;
-      unsigned output_frames  = (unsigned)src_data.output_frames;
-
-      if (audio_driver_use_float)
-         output_frames  *= sizeof(float);
-      else
-      {
-         convert_float_to_s16(audio_driver_output_samples_conv_buf,
-               (const float*)output_data, output_frames * 2);
-
-         output_data     = audio_driver_output_samples_conv_buf;
-         output_frames  *= sizeof(int16_t);
-      }
-
-      if (current_audio->write(audio_driver_context_audio_data,
-               output_data, output_frames * 2) < 0)
-         audio_driver_active = false;
-   }
-}
-
-/**
- * audio_driver_sample:
- * @left                 : value of the left audio channel.
- * @right                : value of the right audio channel.
- *
- * Audio sample render callback function.
- **/
-void audio_driver_sample(int16_t left, int16_t right)
-{
-   bool is_perfcnt_enable            = false;
-   bool is_paused                    = false;
-   bool is_idle                      = false;
-   bool is_slowmotion                = false;
-
-   if (audio_suspended)
-      return;
-
-   audio_driver_output_samples_conv_buf[audio_driver_data_ptr++] = left;
-   audio_driver_output_samples_conv_buf[audio_driver_data_ptr++] = right;
-
-   if (audio_driver_data_ptr < audio_driver_chunk_size)
-      return;
-
-   if (recording_data)
-      recording_push_audio(audio_driver_output_samples_conv_buf,
-            audio_driver_data_ptr);
-
-   runloop_get_status(&is_paused, &is_idle, &is_slowmotion,
-         &is_perfcnt_enable);
-
-   if (!(is_paused                ||
-		   !audio_driver_active     ||
-		   !audio_driver_input_data ||
-		   !audio_driver_output_samples_buf))
-      audio_driver_flush(audio_driver_output_samples_conv_buf,
-            audio_driver_data_ptr, is_slowmotion);
-
-   audio_driver_data_ptr = 0;
-}
-
-void audio_driver_menu_sample(void)
-{
-   bool check_flush                       = false;
-   bool is_perfcnt_enable                 = false;
-   bool is_paused                         = false;
-   bool is_idle                           = false;
-   bool is_slowmotion                     = false;
-   static int16_t samples_buf[1024]       = {0};
-   struct retro_system_av_info *av_info   = video_viewport_get_system_av_info();
-   const struct retro_system_timing *info =
-      (const struct retro_system_timing*)&av_info->timing;
-   unsigned sample_count                  = (info->sample_rate / info->fps) * 2;
-   runloop_get_status(&is_paused, &is_idle, &is_slowmotion,
-         &is_perfcnt_enable);
-   check_flush                            = !(
-         is_paused                ||
-         !audio_driver_active     ||
-         !audio_driver_input_data ||
-         !audio_driver_output_samples_buf);
-
-   while (sample_count > 1024)
-   {
-      if (recording_data)
-         recording_push_audio(samples_buf, 1024);
-      if (check_flush)
-         audio_driver_flush(samples_buf, 1024, is_slowmotion);
-      sample_count -= 1024;
-   }
-   if (recording_data)
-      recording_push_audio(samples_buf, sample_count);
-   if (check_flush)
-      audio_driver_flush(samples_buf, sample_count, is_slowmotion);
-}
-
-/**
- * audio_driver_sample_batch:
- * @data                 : pointer to audio buffer.
- * @frames               : amount of audio frames to push.
- *
- * Batched audio sample render callback function.
- *
- * Returns: amount of frames sampled. Will be equal to @frames
- * unless @frames exceeds (AUDIO_CHUNK_SIZE_NONBLOCKING / 2).
- **/
-size_t audio_driver_sample_batch(const int16_t *data, size_t frames)
-{
-   bool is_perfcnt_enable                 = false;
-   bool is_paused                         = false;
-   bool is_idle                           = false;
-   bool is_slowmotion                     = false;
-
-   if (frames > (AUDIO_CHUNK_SIZE_NONBLOCKING >> 1))
-      frames = AUDIO_CHUNK_SIZE_NONBLOCKING >> 1;
-
-   if (audio_suspended)
-      return frames;
-
-   if (recording_data)
-      recording_push_audio(data, frames << 1);
-
-   runloop_get_status(&is_paused, &is_idle, &is_slowmotion,
-         &is_perfcnt_enable);
-   if (!(
-         is_paused                ||
-         !audio_driver_active     ||
-         !audio_driver_input_data ||
-         !audio_driver_output_samples_buf))
-      audio_driver_flush(data, frames << 1, is_slowmotion);
-
-   return frames;
-}
-
-/**
- * audio_driver_sample_rewind:
- * @left                 : value of the left audio channel.
- * @right                : value of the right audio channel.
- *
- * Audio sample render callback function (rewind version).
- * This callback function will be used instead of
- * audio_driver_sample when rewinding is activated.
- **/
-void audio_driver_sample_rewind(int16_t left, int16_t right)
-{
-   if (audio_driver_rewind_ptr == 0)
-      return;
-
-   audio_driver_rewind_buf[--audio_driver_rewind_ptr] = right;
-   audio_driver_rewind_buf[--audio_driver_rewind_ptr] = left;
-}
-
-/**
- * audio_driver_sample_batch_rewind:
- * @data                 : pointer to audio buffer.
- * @frames               : amount of audio frames to push.
- *
- * Batched audio sample render callback function (rewind version).
- *
- * This callback function will be used instead of
- * audio_driver_sample_batch when rewinding is activated.
- *
- * Returns: amount of frames sampled. Will be equal to @frames
- * unless @frames exceeds (AUDIO_CHUNK_SIZE_NONBLOCKING / 2).
- **/
-size_t audio_driver_sample_batch_rewind(const int16_t *data, size_t frames)
-{
-   size_t i;
-   size_t samples   = frames << 1;
-
-   for (i = 0; i < samples; i++)
-   {
-      if (audio_driver_rewind_ptr > 0)
-         audio_driver_rewind_buf[--audio_driver_rewind_ptr] = data[i];
-   }
-
-   return frames;
-}
-
-void audio_driver_dsp_filter_free(void)
-{
-   if (audio_driver_dsp)
-      retro_dsp_filter_free(audio_driver_dsp);
-   audio_driver_dsp = NULL;
-}
-
-void audio_driver_dsp_filter_init(const char *device)
-{
-   struct string_list *plugs     = NULL;
-#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
-   char *basedir   = (char*)calloc(PATH_MAX_LENGTH, sizeof(*basedir));
-   char *ext_name  = (char*)calloc(PATH_MAX_LENGTH, sizeof(*ext_name));
-   size_t str_size = PATH_MAX_LENGTH * sizeof(char);
-   fill_pathname_basedir(basedir, device, str_size);
-
-   if (!frontend_driver_get_core_extension(ext_name, str_size))
-      goto error;
-
-   plugs = dir_list_new(basedir, ext_name, false, true, false, false);
-   if (!plugs)
-      goto error;
-#endif
-   audio_driver_dsp = retro_dsp_filter_new(
-         device, plugs, audio_driver_input);
-   if (!audio_driver_dsp)
-      goto error;
-
-#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
-   free(basedir);
-   free(ext_name);
-#endif
-
-   return;
-
-error:
-#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
-   free(basedir);
-   free(ext_name);
-#endif
-   if (!audio_driver_dsp)
-      RARCH_ERR("[DSP]: Failed to initialize DSP filter \"%s\".\n", device);
-}
-
-void audio_driver_set_buffer_size(size_t bufsize)
-{
-   audio_driver_buffer_size = bufsize;
-}
-
-void audio_driver_monitor_adjust_system_rates(void)
-{
-   float timing_skew;
-   settings_t                   *settings = config_get_ptr();
-   float video_refresh_rate               = settings->floats.video_refresh_rate;
-   float max_timing_skew                  = settings->floats.audio_max_timing_skew;
-   struct retro_system_av_info   *av_info = video_viewport_get_system_av_info();
-   const struct retro_system_timing *info =
-      (const struct retro_system_timing*)&av_info->timing;
-
-   if (info->sample_rate <= 0.0)
-      return;
-
-   timing_skew             = fabs(1.0f - info->fps / video_refresh_rate);
-   audio_driver_input      = info->sample_rate;
-
-   if (timing_skew <= max_timing_skew && !settings->bools.vrr_runloop_enable)
-      audio_driver_input *= (video_refresh_rate / info->fps);
-
-   RARCH_LOG("[Audio]: Set audio input rate to: %.2f Hz.\n",
-         audio_driver_input);
-}
-
-void audio_driver_setup_rewind(void)
-{
-   unsigned i;
-
-   /* Push audio ready to be played. */
-   audio_driver_rewind_ptr = audio_driver_rewind_size;
-
-   for (i = 0; i < audio_driver_data_ptr; i += 2)
-   {
-      if (audio_driver_rewind_ptr > 0)
-         audio_driver_rewind_buf[--audio_driver_rewind_ptr] =
-            audio_driver_output_samples_conv_buf[i + 1];
-
-      if (audio_driver_rewind_ptr > 0)
-         audio_driver_rewind_buf[--audio_driver_rewind_ptr] =
-            audio_driver_output_samples_conv_buf[i + 0];
-   }
-
-   audio_driver_data_ptr = 0;
-}
-
-bool audio_driver_find_driver(void)
-{
-   int i;
-   driver_ctx_info_t drv;
-   settings_t *settings = config_get_ptr();
-
-   drv.label = "audio_driver";
-   drv.s     = settings->arrays.audio_driver;
-
-   driver_ctl(RARCH_DRIVER_CTL_FIND_INDEX, &drv);
-
-   i = (int)drv.len;
-
-   if (i >= 0)
-      current_audio = (const audio_driver_t*)audio_driver_find_handle(i);
-   else
-   {
-      if (verbosity_is_enabled())
-      {
-         unsigned d;
-         RARCH_ERR("Couldn't find any audio driver named \"%s\"\n",
-               settings->arrays.audio_driver);
-         RARCH_LOG_OUTPUT("Available audio drivers are:\n");
-         for (d = 0; audio_driver_find_handle(d); d++)
-            RARCH_LOG_OUTPUT("\t%s\n", audio_driver_find_ident(d));
-         RARCH_WARN("Going to default to first audio driver...\n");
-      }
-
-      current_audio = (const audio_driver_t*)audio_driver_find_handle(0);
-
-      if (!current_audio)
-         retroarch_fail(1, "audio_driver_find()");
-   }
-
-   return true;
-}
-
-void audio_driver_deinit_resampler(void)
-{
-   if (audio_driver_resampler && audio_driver_resampler_data)
-      audio_driver_resampler->free(audio_driver_resampler_data);
-   audio_driver_resampler      = NULL;
-   audio_driver_resampler_data = NULL;
-}
-
-bool audio_driver_free_devices_list(void)
-{
-   if (!current_audio || !current_audio->device_list_free
-         || !audio_driver_context_audio_data)
-      return false;
-   current_audio->device_list_free(audio_driver_context_audio_data,
-         audio_driver_devices_list);
-   audio_driver_devices_list = NULL;
-   return true;
-}
-
-bool audio_driver_new_devices_list(void)
-{
-   if (!current_audio || !current_audio->device_list_new
-         || !audio_driver_context_audio_data)
-      return false;
-   audio_driver_devices_list = (struct string_list*)
-      current_audio->device_list_new(audio_driver_context_audio_data);
-   if (!audio_driver_devices_list)
-      return false;
-   return true;
-}
-
-bool audio_driver_init(void)
-{
-   return audio_driver_init_internal(audio_callback.callback != NULL);
-}
-
-bool audio_driver_get_devices_list(void **data)
-{
-   struct string_list**ptr = (struct string_list**)data;
-   if (!ptr)
-      return false;
-   *ptr = audio_driver_devices_list;
-   return true;
-}
-
-bool audio_driver_mixer_extension_supported(const char *ext)
-{
-   union string_list_elem_attr attr;
-   unsigned i;
-   bool ret                      = false;
-   struct string_list *str_list  = string_list_new();
-
-   attr.i = 0;
-
-#ifdef HAVE_STB_VORBIS
-   string_list_append(str_list, "ogg", attr);
-#endif
-#ifdef HAVE_IBXM
-   string_list_append(str_list, "mod", attr);
-   string_list_append(str_list, "s3m", attr);
-   string_list_append(str_list, "xm", attr);
-#endif
-#ifdef HAVE_DR_FLAC
-   string_list_append(str_list, "flac", attr);
-#endif
-#ifdef HAVE_DR_MP3
-   string_list_append(str_list, "mp3", attr);
-#endif
-   string_list_append(str_list, "wav", attr);
-
-   for (i = 0; i < str_list->size; i++)
-   {
-      const char *str_ext = str_list->elems[i].data;
-      if (string_is_equal_noncase(str_ext, ext))
-      {
-         ret = true;
-         break;
-      }
-   }
-
-   string_list_free(str_list);
-
-   return ret;
-}
-
-static int audio_mixer_find_index(audio_mixer_sound_t *sound)
-{
-   unsigned i;
-
-   for (i = 0; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
-   {
-      audio_mixer_sound_t *handle = audio_mixer_streams[i].handle;
-      if (handle == sound)
-         return i;
-   }
-   return -1;
-}
-
-static void audio_mixer_play_stop_cb(
-      audio_mixer_sound_t *sound, unsigned reason)
-{
-   int idx = audio_mixer_find_index(sound);
-
-   switch (reason)
-   {
-      case AUDIO_MIXER_SOUND_FINISHED:
-         audio_mixer_destroy(sound);
-
-         if (idx >= 0)
-         {
-            unsigned i = (unsigned)idx;
-
-            if (!string_is_empty(audio_mixer_streams[i].name))
-               free(audio_mixer_streams[i].name);
-
-            audio_mixer_streams[i].name    = NULL;
-            audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_NONE;
-            audio_mixer_streams[i].volume  = 0.0f;
-            audio_mixer_streams[i].buf     = NULL;
-            audio_mixer_streams[i].stop_cb = NULL;
-            audio_mixer_streams[i].handle  = NULL;
-            audio_mixer_streams[i].voice   = NULL;
-         }
-         break;
-      case AUDIO_MIXER_SOUND_STOPPED:
-         break;
-      case AUDIO_MIXER_SOUND_REPEATED:
-         break;
-   }
-}
-
-static void audio_mixer_menu_stop_cb(
-      audio_mixer_sound_t *sound, unsigned reason)
-{
-   int idx = audio_mixer_find_index(sound);
-
-   switch (reason)
-   {
-      case AUDIO_MIXER_SOUND_FINISHED:
-         if (idx >= 0)
-         {
-            unsigned i = (unsigned)idx;
-            audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_STOPPED;
-            audio_mixer_streams[i].volume  = 0.0f;
-         }
-         break;
-      case AUDIO_MIXER_SOUND_STOPPED:
-         break;
-      case AUDIO_MIXER_SOUND_REPEATED:
-         break;
-   }
-}
-
-static void audio_mixer_play_stop_sequential_cb(
-      audio_mixer_sound_t *sound, unsigned reason)
-{
-   int idx = audio_mixer_find_index(sound);
-
-   switch (reason)
-   {
-      case AUDIO_MIXER_SOUND_FINISHED:
-         audio_mixer_destroy(sound);
-
-         if (idx >= 0)
-         {
-            unsigned i = (unsigned)idx;
-
-            if (!string_is_empty(audio_mixer_streams[i].name))
-               free(audio_mixer_streams[i].name);
-
-            if (i < AUDIO_MIXER_MAX_STREAMS)
-               audio_mixer_streams[i].stream_type = AUDIO_STREAM_TYPE_USER;
-            else
-               audio_mixer_streams[i].stream_type = AUDIO_STREAM_TYPE_SYSTEM;
-
-            audio_mixer_streams[i].name    = NULL;
-            audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_NONE;
-            audio_mixer_streams[i].volume  = 0.0f;
-            audio_mixer_streams[i].buf     = NULL;
-            audio_mixer_streams[i].stop_cb = NULL;
-            audio_mixer_streams[i].handle  = NULL;
-            audio_mixer_streams[i].voice   = NULL;
-
-            i++;
-
-            for (; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
-            {
-               if (audio_mixer_streams[i].state == AUDIO_STREAM_STATE_STOPPED)
-               {
-                  audio_driver_mixer_play_stream_sequential(i);
-                  break;
-               }
-            }
-         }
-         break;
-      case AUDIO_MIXER_SOUND_STOPPED:
-         break;
-      case AUDIO_MIXER_SOUND_REPEATED:
-         break;
-   }
-}
-
-static bool audio_driver_mixer_get_free_stream_slot(unsigned *id, enum audio_mixer_stream_type type)
-{
-   unsigned i     = (type == AUDIO_STREAM_TYPE_USER) ? 0                       : AUDIO_MIXER_MAX_STREAMS;
-   unsigned count = (type == AUDIO_STREAM_TYPE_USER) ? AUDIO_MIXER_MAX_STREAMS : AUDIO_MIXER_MAX_SYSTEM_STREAMS;
-   for (; i < count; i++)
-   {
-      if (audio_mixer_streams[i].state == AUDIO_STREAM_STATE_NONE)
-      {
-         *id = i;
-         return true;
-      }
-   }
-
-   return false;
-}
-
-bool audio_driver_mixer_add_stream(audio_mixer_stream_params_t *params)
-{
-   unsigned free_slot            = 0;
-   audio_mixer_voice_t *voice    = NULL;
-   audio_mixer_sound_t *handle   = NULL;
-   audio_mixer_stop_cb_t stop_cb = audio_mixer_play_stop_cb;
-   bool looped                   = false;
-   void *buf                     = NULL;
-
-   if (params->stream_type == AUDIO_STREAM_TYPE_NONE)
-      return false;
-
-   switch (params->slot_selection_type)
-   {
-      case AUDIO_MIXER_SLOT_SELECTION_MANUAL:
-         free_slot = params->slot_selection_idx;
-         break;
-      case AUDIO_MIXER_SLOT_SELECTION_AUTOMATIC:
-      default:
-         if (!audio_driver_mixer_get_free_stream_slot(
-                  &free_slot, params->stream_type))
-            return false;
-         break;
-   }
-
-   if (params->state == AUDIO_STREAM_STATE_NONE)
-      return false;
-
-   buf = malloc(params->bufsize);
-
-   if (!buf)
-      return false;
-
-   memcpy(buf, params->buf, params->bufsize);
-
-   switch (params->type)
-   {
-      case AUDIO_MIXER_TYPE_WAV:
-         handle = audio_mixer_load_wav(buf, (int32_t)params->bufsize);
-         break;
-      case AUDIO_MIXER_TYPE_OGG:
-         handle = audio_mixer_load_ogg(buf, (int32_t)params->bufsize);
-         break;
-      case AUDIO_MIXER_TYPE_MOD:
-         handle = audio_mixer_load_mod(buf, (int32_t)params->bufsize);
-         break;
-      case AUDIO_MIXER_TYPE_FLAC:
-#ifdef HAVE_DR_FLAC
-         handle = audio_mixer_load_flac(buf, (int32_t)params->bufsize);
-#endif
-         break;
-      case AUDIO_MIXER_TYPE_MP3:
-#ifdef HAVE_DR_MP3
-         handle = audio_mixer_load_mp3(buf, (int32_t)params->bufsize);
-#endif
-         break;
-      case AUDIO_MIXER_TYPE_NONE:
-         break;
-   }
-
-   if (!handle)
-   {
-      free(buf);
-      return false;
-   }
-
-   switch (params->state)
-   {
-      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
-         looped = true;
-         voice = audio_mixer_play(handle, looped, params->volume, stop_cb);
-         break;
-      case AUDIO_STREAM_STATE_PLAYING:
-         voice = audio_mixer_play(handle, looped, params->volume, stop_cb);
-         break;
-      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
-         stop_cb = audio_mixer_play_stop_sequential_cb;
-         voice = audio_mixer_play(handle, looped, params->volume, stop_cb);
-         break;
-      default:
-         break;
-   }
-
-   audio_mixer_active                     = true;
-
-   audio_mixer_streams[free_slot].name    = !string_is_empty(params->basename) ? strdup(params->basename) : NULL;
-   audio_mixer_streams[free_slot].buf     = buf;
-   audio_mixer_streams[free_slot].handle  = handle;
-   audio_mixer_streams[free_slot].voice   = voice;
-   audio_mixer_streams[free_slot].stream_type = params->stream_type;
-   audio_mixer_streams[free_slot].type    = params->type;
-   audio_mixer_streams[free_slot].state   = params->state;
-   audio_mixer_streams[free_slot].volume  = params->volume;
-   audio_mixer_streams[free_slot].stop_cb = stop_cb;
-
-   return true;
-}
-
-enum audio_mixer_state audio_driver_mixer_get_stream_state(unsigned i)
-{
-   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
-      return AUDIO_STREAM_STATE_NONE;
-
-   return audio_mixer_streams[i].state;
-}
-
-static void audio_driver_mixer_play_stream_internal(unsigned i, unsigned type)
-{
-   bool set_state              = false;
-
-   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
-      return;
-
-   switch (audio_mixer_streams[i].state)
-   {
-      case AUDIO_STREAM_STATE_STOPPED:
-         audio_mixer_streams[i].voice = audio_mixer_play(audio_mixer_streams[i].handle,
-               (type == AUDIO_STREAM_STATE_PLAYING_LOOPED) ? true : false,
-               1.0f, audio_mixer_streams[i].stop_cb);
-         set_state = true;
-         break;
-      case AUDIO_STREAM_STATE_PLAYING:
-      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
-      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
-      case AUDIO_STREAM_STATE_NONE:
-         break;
-   }
-
-   if (set_state)
-      audio_mixer_streams[i].state   = (enum audio_mixer_state)type;
-}
-
-static void audio_driver_load_menu_bgm_callback(retro_task_t *task,
-      void *task_data, void *user_data, const char *error)
-{
-   bool contentless = false;
-   bool is_inited = false;
-
-   content_get_status(&contentless, &is_inited);
-
-   if (!is_inited)
-      audio_driver_mixer_play_menu_sound_looped(AUDIO_MIXER_SYSTEM_SLOT_BGM);
-}
-
-void audio_driver_load_menu_sounds(void)
-{
-   settings_t *settings = config_get_ptr();
-   char *sounds_path = NULL;
-   char *sounds_fallback_path = NULL;
-   const char *path_ok = NULL;
-   const char *path_cancel = NULL;
-   const char *path_notice = NULL;
-   const char *path_bgm = NULL;
-   struct string_list *list = NULL;
-   struct string_list *list_fallback = NULL;
-   unsigned i = 0;
-
-   sounds_path = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
-   sounds_fallback_path = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
-   sounds_path[0] = sounds_fallback_path[0] = '\0';
-
-   fill_pathname_join(
-         sounds_fallback_path,
-         settings->paths.directory_assets,
-         "sounds",
-         PATH_MAX_LENGTH * sizeof(char)
-   );
-
-   fill_pathname_application_special(sounds_path, PATH_MAX_LENGTH * sizeof(char), APPLICATION_SPECIAL_DIRECTORY_ASSETS_SOUNDS);
-
-   list = dir_list_new(sounds_path, MENU_SOUND_FORMATS, false, false, false, false);
-   list_fallback = dir_list_new(sounds_fallback_path, MENU_SOUND_FORMATS, false, false, false, false);
-
-   if (!list)
-   {
-      list = list_fallback;
-      list_fallback = NULL;
-   }
-
-   if (!list || list->size == 0)
-      goto end;
-
-   if (list_fallback && list_fallback->size > 0)
-   {
-      for (i = 0; i < list_fallback->size; i++)
-      {
-         if (list->size == 0 || !string_list_find_elem(list, list_fallback->elems[i].data))
-         {
-            union string_list_elem_attr attr = {0};
-            string_list_append(list, list_fallback->elems[i].data, attr);
-         }
-      }
-   }
-
-   for (i = 0; i < list->size; i++)
-   {
-      const char *path = list->elems[i].data;
-      const char *ext = path_get_extension(path);
-      char basename_noext[PATH_MAX_LENGTH];
-
-      basename_noext[0] = '\0';
-
-      fill_pathname_base_noext(basename_noext, path, sizeof(basename_noext));
-
-      if (audio_driver_mixer_extension_supported(ext))
-      {
-         if (string_is_equal_noncase(basename_noext, "ok"))
-            path_ok = path;
-         if (string_is_equal_noncase(basename_noext, "cancel"))
-            path_cancel = path;
-         if (string_is_equal_noncase(basename_noext, "notice"))
-            path_notice = path;
-         if (string_is_equal_noncase(basename_noext, "bgm"))
-            path_bgm = path;
-      }
-   }
-
-   if (path_ok && settings->bools.audio_enable_menu_ok)
-      task_push_audio_mixer_load(path_ok, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_OK);
-   if (path_cancel && settings->bools.audio_enable_menu_cancel)
-      task_push_audio_mixer_load(path_cancel, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_CANCEL);
-   if (path_notice && settings->bools.audio_enable_menu_notice)
-      task_push_audio_mixer_load(path_notice, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_NOTICE);
-   if (path_bgm && settings->bools.audio_enable_menu_bgm)
-      task_push_audio_mixer_load(path_bgm, audio_driver_load_menu_bgm_callback, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_BGM);
-
-end:
-   if (list)
-      string_list_free(list);
-   if (list_fallback)
-      string_list_free(list_fallback);
-   if (sounds_path)
-      free(sounds_path);
-   if (sounds_fallback_path)
-      free(sounds_fallback_path);
-}
-
-void audio_driver_mixer_play_stream(unsigned i)
-{
-   audio_mixer_streams[i].stop_cb = audio_mixer_play_stop_cb;
-   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING);
-}
-
-void audio_driver_mixer_play_menu_sound_looped(unsigned i)
-{
-   audio_mixer_streams[i].stop_cb = audio_mixer_menu_stop_cb;
-   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_LOOPED);
-}
-
-void audio_driver_mixer_play_menu_sound(unsigned i)
-{
-   audio_mixer_streams[i].stop_cb = audio_mixer_menu_stop_cb;
-   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING);
-}
-
-void audio_driver_mixer_play_stream_looped(unsigned i)
-{
-   audio_mixer_streams[i].stop_cb = audio_mixer_play_stop_cb;
-   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_LOOPED);
-}
-
-void audio_driver_mixer_play_stream_sequential(unsigned i)
-{
-   audio_mixer_streams[i].stop_cb = audio_mixer_play_stop_sequential_cb;
-   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL);
-}
-
-float audio_driver_mixer_get_stream_volume(unsigned i)
-{
-   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
-      return 0.0f;
-
-   return audio_mixer_streams[i].volume;
-}
-
-void audio_driver_mixer_set_stream_volume(unsigned i, float vol)
-{
-   audio_mixer_voice_t *voice     = NULL;
-
-   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
-      return;
-
-   audio_mixer_streams[i].volume  = vol;
-
-   voice                          = audio_mixer_streams[i].voice;
-
-   if (voice)
-      audio_mixer_voice_set_volume(voice, db_to_gain(vol));
-}
-
-void audio_driver_mixer_stop_stream(unsigned i)
-{
-   bool set_state              = false;
-
-   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
-      return;
-
-   switch (audio_mixer_streams[i].state)
-   {
-      case AUDIO_STREAM_STATE_PLAYING:
-      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
-      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
-         set_state = true;
-         break;
-      case AUDIO_STREAM_STATE_STOPPED:
-      case AUDIO_STREAM_STATE_NONE:
-         break;
-   }
-
-   if (set_state)
-   {
-      audio_mixer_voice_t *voice     = audio_mixer_streams[i].voice;
-
-      if (voice)
-         audio_mixer_stop(voice);
-      audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_STOPPED;
-      audio_mixer_streams[i].volume  = 1.0f;
-   }
-}
-
-void audio_driver_mixer_remove_stream(unsigned i)
-{
-   bool destroy                = false;
-
-   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
-      return;
-
-   switch (audio_mixer_streams[i].state)
-   {
-      case AUDIO_STREAM_STATE_PLAYING:
-      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
-      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
-         audio_driver_mixer_stop_stream(i);
-         destroy = true;
-         break;
-      case AUDIO_STREAM_STATE_STOPPED:
-         destroy = true;
-         break;
-      case AUDIO_STREAM_STATE_NONE:
-         break;
-   }
-
-   if (destroy)
-   {
-      audio_mixer_sound_t *handle = audio_mixer_streams[i].handle;
-      if (handle)
-         audio_mixer_destroy(handle);
-
-      if (!string_is_empty(audio_mixer_streams[i].name))
-         free(audio_mixer_streams[i].name);
-
-      audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_NONE;
-      audio_mixer_streams[i].stop_cb = NULL;
-      audio_mixer_streams[i].volume  = 0.0f;
-      audio_mixer_streams[i].handle  = NULL;
-      audio_mixer_streams[i].voice   = NULL;
-      audio_mixer_streams[i].name    = NULL;
-   }
-}
-
-static void audio_driver_mixer_deinit(void)
-{
-   unsigned i;
-
-   audio_mixer_active = false;
-
-   for (i = 0; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
-   {
-      audio_driver_mixer_stop_stream(i);
-      audio_driver_mixer_remove_stream(i);
-   }
-
-   audio_mixer_done();
-}
-
-bool audio_driver_deinit(void)
-{
-   audio_driver_mixer_deinit();
-   audio_driver_free_devices_list();
-
-   if (!audio_driver_deinit_internal())
-      return false;
-   return true;
-}
-
-bool audio_driver_set_callback(const void *data)
-{
-   const struct retro_audio_callback *cb = (const struct retro_audio_callback*)data;
-
-   if (cb)
-      audio_callback = *cb;
-
-   return true;
-}
-
-bool audio_driver_enable_callback(void)
-{
-   if (!audio_callback.callback)
-      return false;
-   if (audio_callback.set_state)
-      audio_callback.set_state(true);
-   return true;
-}
-
-bool audio_driver_disable_callback(void)
-{
-   if (!audio_callback.callback)
-      return false;
-
-   if (audio_callback.set_state)
-      audio_callback.set_state(false);
-   return true;
-}
-
-/* Sets audio monitor rate to new value. */
-void audio_driver_monitor_set_rate(void)
-{
-   settings_t *settings = config_get_ptr();
-   double new_src_ratio = (double)settings->uints.audio_out_rate /
-      audio_driver_input;
-
-   audio_source_ratio_original = new_src_ratio;
-   audio_source_ratio_current  = new_src_ratio;
-}
-
-bool audio_driver_callback(void)
-{
-   if (!audio_callback.callback)
-      return false;
-
-   if (audio_callback.callback)
-      audio_callback.callback();
-
-   return true;
-}
-
-bool audio_driver_has_callback(void)
-{
-   if (audio_callback.callback)
-	   return true;
-   return false;
-}
-
-bool audio_driver_toggle_mute(void)
-{
-   audio_driver_mute_enable  = !audio_driver_mute_enable;
-   return true;
-}
-
-bool audio_driver_mixer_toggle_mute(void)
-{
-   audio_driver_mixer_mute_enable  = !audio_driver_mixer_mute_enable;
-   return true;
-}
-
-static INLINE bool audio_driver_alive(void)
-{
-   if (     current_audio
-         && current_audio->alive
-         && audio_driver_context_audio_data)
-      return current_audio->alive(audio_driver_context_audio_data);
-   return false;
-}
-
-bool audio_driver_start(bool is_shutdown)
-{
-   if (!current_audio || !current_audio->start
-         || !audio_driver_context_audio_data)
-      goto error;
-   if (!current_audio->start(audio_driver_context_audio_data, is_shutdown))
-      goto error;
-
-   return true;
-
-error:
-   RARCH_ERR("%s\n",
-         msg_hash_to_str(MSG_FAILED_TO_START_AUDIO_DRIVER));
-   audio_driver_active = false;
-   return false;
-}
-
-bool audio_driver_stop(void)
-{
-   if (!current_audio || !current_audio->stop
-         || !audio_driver_context_audio_data)
-      return false;
-   if (!audio_driver_alive())
-      return false;
-   return current_audio->stop(audio_driver_context_audio_data);
-}
-
-void audio_driver_unset_callback(void)
-{
-   audio_callback.callback  = NULL;
-   audio_callback.set_state = NULL;
-}
-
-void audio_driver_frame_is_reverse(void)
-{
-   bool is_perfcnt_enable                 = false;
-   bool is_paused                         = false;
-   bool is_idle                           = false;
-   bool is_slowmotion                     = false;
-
-   /* We just rewound. Flush rewind audio buffer. */
-   if (recording_data)
-      recording_push_audio(
-            audio_driver_rewind_buf + audio_driver_rewind_ptr,
-            audio_driver_rewind_size - audio_driver_rewind_ptr);
-
-   runloop_get_status(&is_paused, &is_idle, &is_slowmotion,
-         &is_perfcnt_enable);
-   if (!(
-         is_paused                ||
-         !audio_driver_active     ||
-         !audio_driver_input_data ||
-         !audio_driver_output_samples_buf))
-      audio_driver_flush(
-            audio_driver_rewind_buf + audio_driver_rewind_ptr,
-            audio_driver_rewind_size - audio_driver_rewind_ptr,
-            is_slowmotion);
-}
-
-void audio_driver_destroy_data(void)
-{
-   audio_driver_context_audio_data = NULL;
-}
-
-void audio_driver_suspend(void)
-{
-   audio_suspended = true;
-}
-
-bool audio_driver_is_suspended(void)
-{
-   return audio_suspended;
-}
-
-void audio_driver_resume(void)
-{
-   audio_suspended = false;
-}
-
-void audio_driver_set_active(void)
-{
-   audio_driver_active = true;
-}
-
-bool audio_driver_is_active(void)
-{
-   return audio_driver_active;
-}
-
-void audio_driver_destroy(void)
-{
-   audio_driver_active   = false;
-   current_audio         = NULL;
-}
-
-void audio_set_bool(enum audio_action action, bool val)
-{
-   switch (action)
-   {
-      case AUDIO_ACTION_MIXER:
-         audio_mixer_active = val;
-         break;
-      case AUDIO_ACTION_NONE:
-      default:
-         break;
-   }
-}
-
-void audio_set_float(enum audio_action action, float val)
-{
-   switch (action)
-   {
-      case AUDIO_ACTION_VOLUME_GAIN:
-         audio_driver_volume_gain        = db_to_gain(val);
-         break;
-      case AUDIO_ACTION_MIXER_VOLUME_GAIN:
-         audio_driver_mixer_volume_gain  = db_to_gain(val);
-         break;
-      case AUDIO_ACTION_RATE_CONTROL_DELTA:
-         audio_driver_rate_control_delta = val;
-         break;
-      case AUDIO_ACTION_NONE:
-      default:
-         break;
-   }
-}
-
-float *audio_get_float_ptr(enum audio_action action)
-{
-   switch (action)
-   {
-      case AUDIO_ACTION_RATE_CONTROL_DELTA:
-         return &audio_driver_rate_control_delta;
-      case AUDIO_ACTION_NONE:
-      default:
-         break;
-   }
-
-   return NULL;
-}
-
-bool *audio_get_bool_ptr(enum audio_action action)
-{
-   switch (action)
-   {
-      case AUDIO_ACTION_MIXER_MUTE_ENABLE:
-         return &audio_driver_mixer_mute_enable;
-      case AUDIO_ACTION_MUTE_ENABLE:
-         return &audio_driver_mute_enable;
-      case AUDIO_ACTION_NONE:
-      default:
-         break;
-   }
-
-   return NULL;
-}
-
-const char* audio_driver_get_ident(void)
-{
-   if (!current_audio)
-      return NULL;
-
-   return current_audio->ident;
-}
diff --git a/audio/audio_driver.h b/audio/audio_driver.h
deleted file mode 100644
index 624ca6a453..0000000000
--- a/audio/audio_driver.h
+++ /dev/null
@@ -1,319 +0,0 @@
-/*  RetroArch - A frontend for libretro.
- *  Copyright (C) 2010-2014 - Hans-Kristian Arntzen
- *  Copyright (C) 2011-2017 - Daniel De Matteis
- *
- *  RetroArch is free software: you can redistribute it and/or modify it under the terms
- *  of the GNU General Public License as published by the Free Software Found-
- *  ation, either version 3 of the License, or (at your option) any later version.
- *
- *  RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
- *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- *  PURPOSE.  See the GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License along with RetroArch.
- *  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef __AUDIO_DRIVER__H
-#define __AUDIO_DRIVER__H
-
-#include <stdint.h>
-#include <stddef.h>
-#include <sys/types.h>
-
-#include <boolean.h>
-#include <retro_common_api.h>
-
-#include <audio/audio_mixer.h>
-
-#include "audio_defines.h"
-
-RETRO_BEGIN_DECLS
-
-typedef struct audio_mixer_stream
-{
-   audio_mixer_sound_t *handle;
-   audio_mixer_voice_t *voice;
-   audio_mixer_stop_cb_t stop_cb;
-   enum audio_mixer_stream_type  stream_type;
-   enum audio_mixer_type type;
-   enum audio_mixer_state state;
-   float volume;
-   void *buf;
-   char *name;
-   size_t bufsize;
-} audio_mixer_stream_t;
-
-typedef struct audio_mixer_stream_params
-{
-   float volume;
-   enum audio_mixer_slot_selection_type slot_selection_type;
-   unsigned slot_selection_idx;
-   enum audio_mixer_stream_type  stream_type;
-   enum audio_mixer_type  type;
-   enum audio_mixer_state state;
-   void *buf;
-   char *basename;
-   size_t bufsize;
-   audio_mixer_stop_cb_t cb;
-} audio_mixer_stream_params_t;
-
-typedef struct audio_driver
-{
-   /* Creates and initializes handle to audio driver.
-    *
-    * Returns: audio driver handle on success, otherwise NULL.
-    **/
-   void *(*init)(const char *device, unsigned rate,
-         unsigned latency, unsigned block_frames, unsigned *new_rate);
-
-   /*
-    * @data         : Pointer to audio data handle.
-    * @buf          : Audio buffer data.
-    * @size         : Size of audio buffer.
-    *
-    * Write samples to audio driver.
-    *
-    * Write data in buffer to audio driver.
-    * A frame here is defined as one combined sample of left and right
-    * channels. (I.e. 44.1kHz, 16-bit stereo has 88.2k samples/s, and
-    * 44.1k frames/s.)
-    *
-    * Samples are interleaved in format LRLRLRLRLR ...
-    * If the driver returns true in use_float(), a floating point
-    * format will be used, with range [-1.0, 1.0].
-    * If not, signed 16-bit samples in native byte ordering will be used.
-    *
-    * This function returns the number of frames successfully written.
-    * If an error occurs, -1 should be returned.
-    * Note that non-blocking behavior that cannot write at this time
-    * should return 0 as returning -1 will terminate the driver.
-    *
-    * Unless said otherwise with set_nonblock_state(), all writes
-    * are blocking, and it should block till it has written all frames.
-    */
-   ssize_t (*write)(void *data, const void *buf, size_t size);
-
-   /* Temporarily pauses the audio driver. */
-   bool (*stop)(void *data);
-
-   /* Resumes audio driver from the paused state. */
-   bool (*start)(void *data, bool is_shutdown);
-
-   /* Is the audio driver currently running? */
-   bool (*alive)(void *data);
-
-   /* Should we care about blocking in audio thread? Fast forwarding.
-    *
-    * If state is true, nonblocking operation is assumed.
-    * This is typically used for fast-forwarding. If driver cannot
-    * implement nonblocking writes, this can be disregarded, but should
-    * log a message to stderr.
-    * */
-   void (*set_nonblock_state)(void *data, bool toggle);
-
-   /* Stops and frees driver data. */
-   void (*free)(void *data);
-
-   /* Defines if driver will take standard floating point samples,
-    * or int16_t samples.
-    *
-    * If true is returned, the audio driver is capable of using
-    * floating point data. This will likely increase performance as the
-    * resampler unit uses floating point. The sample range is
-    * [-1.0, 1.0].
-    * */
-   bool (*use_float)(void *data);
-
-   /* Human-readable identifier. */
-   const char *ident;
-
-   /* Optional. Get audio device list (allocates, caller has to free this) */
-   void *(*device_list_new)(void *data);
-
-   /* Optional. Frees audio device list */
-   void (*device_list_free)(void *data, void *data2);
-
-   /* Optional. */
-   size_t (*write_avail)(void *data);
-
-   size_t (*buffer_size)(void *data);
-} audio_driver_t;
-
-void audio_driver_destroy_data(void);
-
-void audio_driver_suspend(void);
-
-bool audio_driver_is_suspended(void);
-
-void audio_driver_resume(void);
-
-void audio_driver_set_active(void);
-
-bool audio_driver_is_active(void);
-
-void audio_driver_destroy(void);
-
-void audio_driver_deinit_resampler(void);
-
-bool audio_driver_free_devices_list(void);
-
-bool audio_driver_new_devices_list(void);
-
-bool audio_driver_enable_callback(void);
-
-bool audio_driver_disable_callback(void);
-
-/**
- * audio_driver_find_handle:
- * @index              : index of driver to get handle to.
- *
- * Returns: handle to audio driver at index. Can be NULL
- * if nothing found.
- **/
-const void *audio_driver_find_handle(int index);
-
-/**
- * audio_driver_find_ident:
- * @index              : index of driver to get handle to.
- *
- * Returns: Human-readable identifier of audio driver at index. Can be NULL
- * if nothing found.
- **/
-const char *audio_driver_find_ident(int index);
-
-void audio_driver_set_nonblocking_state(bool enable);
-
-/**
- * config_get_audio_driver_options:
- *
- * Get an enumerated list of all audio driver names, separated by '|'.
- *
- * Returns: string listing of all audio driver names, separated by '|'.
- **/
-const char* config_get_audio_driver_options(void);
-
-void audio_driver_sample(int16_t left, int16_t right);
-
-size_t audio_driver_sample_batch(const int16_t *data, size_t frames);
-
-void audio_driver_sample_rewind(int16_t left, int16_t right);
-
-size_t audio_driver_sample_batch_rewind(const int16_t *data, size_t frames);
-
-bool audio_driver_mixer_extension_supported(const char *ext);
-
-void audio_driver_dsp_filter_free(void);
-
-void audio_driver_dsp_filter_init(const char *device);
-
-void audio_driver_set_buffer_size(size_t bufsize);
-
-bool audio_driver_get_devices_list(void **ptr);
-
-void audio_driver_setup_rewind(void);
-
-void audio_driver_monitor_adjust_system_rates(void);
-
-bool audio_driver_set_callback(const void *data);
-
-bool audio_driver_callback(void);
-
-bool audio_driver_has_callback(void);
-
-/* Sets audio monitor rate to new value. */
-void audio_driver_monitor_set_rate(void);
-
-bool audio_driver_find_driver(void);
-
-bool audio_driver_toggle_mute(void);
-
-bool audio_driver_start(bool is_shutdown);
-
-bool audio_driver_stop(void);
-
-void audio_driver_unset_callback(void);
-
-void audio_driver_frame_is_reverse(void);
-
-void audio_set_float(enum audio_action action, float val);
-
-void audio_set_bool(enum audio_action action, bool val);
-
-void audio_unset_bool(enum audio_action action, bool val);
-
-float *audio_get_float_ptr(enum audio_action action);
-
-bool *audio_get_bool_ptr(enum audio_action action);
-
-bool audio_driver_deinit(void);
-
-bool audio_driver_init(void);
-
-void audio_driver_menu_sample(void);
-
-audio_mixer_stream_t *audio_driver_mixer_get_stream(unsigned i);
-
-bool audio_driver_mixer_add_stream(audio_mixer_stream_params_t *params);
-
-void audio_driver_mixer_play_stream(unsigned i);
-
-void audio_driver_mixer_play_menu_sound(unsigned i);
-
-void audio_driver_mixer_play_menu_sound_looped(unsigned i);
-
-void audio_driver_mixer_play_stream_sequential(unsigned i);
-
-void audio_driver_mixer_play_stream_looped(unsigned i);
-
-void audio_driver_mixer_stop_stream(unsigned i);
-
-float audio_driver_mixer_get_stream_volume(unsigned i);
-
-void audio_driver_mixer_set_stream_volume(unsigned i, float vol);
-
-void audio_driver_mixer_remove_stream(unsigned i);
-
-enum audio_mixer_state audio_driver_mixer_get_stream_state(unsigned i);
-
-const char *audio_driver_mixer_get_stream_name(unsigned i);
-
-bool compute_audio_buffer_statistics(audio_statistics_t *stats);
-
-void audio_driver_load_menu_sounds(void);
-
-const char* audio_driver_get_ident(void);
-
-extern audio_driver_t audio_rsound;
-extern audio_driver_t audio_audioio;
-extern audio_driver_t audio_oss;
-extern audio_driver_t audio_alsa;
-extern audio_driver_t audio_alsathread;
-extern audio_driver_t audio_tinyalsa;
-extern audio_driver_t audio_roar;
-extern audio_driver_t audio_openal;
-extern audio_driver_t audio_opensl;
-extern audio_driver_t audio_jack;
-extern audio_driver_t audio_sdl;
-extern audio_driver_t audio_xa;
-extern audio_driver_t audio_pulse;
-extern audio_driver_t audio_dsound;
-extern audio_driver_t audio_wasapi;
-extern audio_driver_t audio_coreaudio;
-extern audio_driver_t audio_coreaudio3;
-extern audio_driver_t audio_xenon360;
-extern audio_driver_t audio_ps3;
-extern audio_driver_t audio_gx;
-extern audio_driver_t audio_ax;
-extern audio_driver_t audio_psp;
-extern audio_driver_t audio_ps2;
-extern audio_driver_t audio_ctr_csnd;
-extern audio_driver_t audio_ctr_dsp;
-extern audio_driver_t audio_switch;
-extern audio_driver_t audio_switch_thread;
-extern audio_driver_t audio_rwebaudio;
-extern audio_driver_t audio_null;
-
-RETRO_END_DECLS
-
-#endif
diff --git a/audio/audio_thread_wrapper.h b/audio/audio_thread_wrapper.h
index 11fee2d566..8ee8be2be0 100644
--- a/audio/audio_thread_wrapper.h
+++ b/audio/audio_thread_wrapper.h
@@ -19,7 +19,7 @@
 
 #include <boolean.h>
 
-#include "audio_driver.h"
+#include "../retroarch.h"
 
 /**
  * audio_init_thread:
diff --git a/audio/drivers/alsa.c b/audio/drivers/alsa.c
index 755e672bd0..f0d7b139a6 100644
--- a/audio/drivers/alsa.c
+++ b/audio/drivers/alsa.c
@@ -21,7 +21,7 @@
 
 #include <alsa/asoundlib.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 typedef struct alsa
diff --git a/audio/drivers/alsa_qsa.c b/audio/drivers/alsa_qsa.c
index 3114ffcdd2..d192370bb7 100644
--- a/audio/drivers/alsa_qsa.c
+++ b/audio/drivers/alsa_qsa.c
@@ -19,7 +19,7 @@
 #include <sys/asoundlib.h>
 #include <retro_math.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 #define MAX_FRAG_SIZE 3072
 #define DEFAULT_RATE 48000
diff --git a/audio/drivers/alsathread.c b/audio/drivers/alsathread.c
index d7e45072bf..33cfe02af4 100644
--- a/audio/drivers/alsathread.c
+++ b/audio/drivers/alsathread.c
@@ -24,7 +24,7 @@
 #include <queues/fifo_queue.h>
 #include <string/stdstring.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #define TRY_ALSA(x) if (x < 0) \
diff --git a/audio/drivers/audioio.c b/audio/drivers/audioio.c
index b51a7fffc0..66a219ec3c 100644
--- a/audio/drivers/audioio.c
+++ b/audio/drivers/audioio.c
@@ -27,7 +27,7 @@
 #include "config.h"
 #endif
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #define DEFAULT_DEV "/dev/audio"
diff --git a/audio/drivers/coreaudio.c b/audio/drivers/coreaudio.c
index f35fa96e77..0a8ca82971 100644
--- a/audio/drivers/coreaudio.c
+++ b/audio/drivers/coreaudio.c
@@ -31,7 +31,7 @@
 #include <retro_endianness.h>
 #include <string/stdstring.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 typedef struct coreaudio
diff --git a/audio/drivers/coreaudio3.m b/audio/drivers/coreaudio3.m
index 176024411b..0849233353 100644
--- a/audio/drivers/coreaudio3.m
+++ b/audio/drivers/coreaudio3.m
@@ -22,7 +22,7 @@
 #include <stdlib.h>
 #include <memory.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 #pragma mark - ringbuffer
 
diff --git a/audio/drivers/ctr_csnd_audio.c b/audio/drivers/ctr_csnd_audio.c
index 019dd8a040..e1783ebb2c 100644
--- a/audio/drivers/ctr_csnd_audio.c
+++ b/audio/drivers/ctr_csnd_audio.c
@@ -19,7 +19,7 @@
 #include <retro_miscellaneous.h>
 #include <retro_timers.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 typedef struct
 {
diff --git a/audio/drivers/ctr_dsp_audio.c b/audio/drivers/ctr_dsp_audio.c
index afed352ab4..46de845f8d 100644
--- a/audio/drivers/ctr_dsp_audio.c
+++ b/audio/drivers/ctr_dsp_audio.c
@@ -17,7 +17,7 @@
 #include <string.h>
 #include <malloc.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../ctr/ctr_debug.h"
 
 typedef struct
diff --git a/audio/drivers/dsound.c b/audio/drivers/dsound.c
index d74c0a2c0d..1f36b6f311 100644
--- a/audio/drivers/dsound.c
+++ b/audio/drivers/dsound.c
@@ -37,7 +37,7 @@
 #endif
 #include <queues/fifo_queue.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #ifdef _XBOX
diff --git a/audio/drivers/gx_audio.c b/audio/drivers/gx_audio.c
index e41f15f916..f4f2be0ca8 100644
--- a/audio/drivers/gx_audio.c
+++ b/audio/drivers/gx_audio.c
@@ -27,7 +27,7 @@
 #include <boolean.h>
 #include <retro_inline.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../defines/gx_defines.h"
 
 typedef struct
diff --git a/audio/drivers/jack.c b/audio/drivers/jack.c
index 40a116f292..ede8c1a370 100644
--- a/audio/drivers/jack.c
+++ b/audio/drivers/jack.c
@@ -25,7 +25,7 @@
 #include <boolean.h>
 #include <rthreads/rthreads.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../configuration.h"
 #include "../../verbosity.h"
 
diff --git a/audio/drivers/nullaudio.c b/audio/drivers/nullaudio.c
index c7dffc6f7e..4d92ecdb97 100644
--- a/audio/drivers/nullaudio.c
+++ b/audio/drivers/nullaudio.c
@@ -14,7 +14,7 @@
  *  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 static void *null_audio_init(const char *device, unsigned rate, unsigned latency,
diff --git a/audio/drivers/openal.c b/audio/drivers/openal.c
index 6127ca9b4d..1c9cfc6575 100644
--- a/audio/drivers/openal.c
+++ b/audio/drivers/openal.c
@@ -33,7 +33,7 @@
 #include <retro_miscellaneous.h>
 #include <retro_timers.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #define BUFSIZE 1024
diff --git a/audio/drivers/opensl.c b/audio/drivers/opensl.c
index c683fecd5c..26ec306f67 100644
--- a/audio/drivers/opensl.c
+++ b/audio/drivers/opensl.c
@@ -21,7 +21,7 @@
 
 #include <rthreads/rthreads.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 /* Helper macros, COM-style. */
 #define SLObjectItf_Realize(a, ...) ((*(a))->Realize(a, __VA_ARGS__))
diff --git a/audio/drivers/oss.c b/audio/drivers/oss.c
index 1c6691187e..73b4a61eeb 100644
--- a/audio/drivers/oss.c
+++ b/audio/drivers/oss.c
@@ -33,7 +33,7 @@
 #include "config.h"
 #endif
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #ifdef HAVE_OSS_BSD
diff --git a/audio/drivers/ps2_audio.c b/audio/drivers/ps2_audio.c
index 9720eb4643..3a50a61c4a 100644
--- a/audio/drivers/ps2_audio.c
+++ b/audio/drivers/ps2_audio.c
@@ -21,7 +21,7 @@
 #include <kernel.h>
 #include <audsrv.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 #define AUDIO_BUFFER 128 * 1024
 #define AUDIO_CHANNELS 2
diff --git a/audio/drivers/ps3_audio.c b/audio/drivers/ps3_audio.c
index 1f5eba29b6..c6edf9ecda 100644
--- a/audio/drivers/ps3_audio.c
+++ b/audio/drivers/ps3_audio.c
@@ -19,7 +19,7 @@
 
 #include <queues/fifo_queue.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 #include "../../defines/ps3_defines.h"
 
diff --git a/audio/drivers/psp_audio.c b/audio/drivers/psp_audio.c
index 5c979033bc..3bfe115fde 100644
--- a/audio/drivers/psp_audio.c
+++ b/audio/drivers/psp_audio.c
@@ -40,7 +40,7 @@
 #define SceUID uint32_t
 #endif
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 typedef struct psp_audio
 {
diff --git a/audio/drivers/pulse.c b/audio/drivers/pulse.c
index fd27ca7b8f..a319e10ebf 100644
--- a/audio/drivers/pulse.c
+++ b/audio/drivers/pulse.c
@@ -23,7 +23,7 @@
 #include <retro_miscellaneous.h>
 #include <retro_endianness.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 typedef struct
diff --git a/audio/drivers/roar.c b/audio/drivers/roar.c
index 815e5ade96..26b72fb993 100644
--- a/audio/drivers/roar.c
+++ b/audio/drivers/roar.c
@@ -23,7 +23,7 @@
 
 #include <boolean.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 typedef struct
diff --git a/audio/drivers/rsound.c b/audio/drivers/rsound.c
index c6241c51d5..8f5ea9ff10 100644
--- a/audio/drivers/rsound.c
+++ b/audio/drivers/rsound.c
@@ -21,7 +21,7 @@
 #include <queues/fifo_queue.h>
 #include <rthreads/rthreads.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "rsound.h"
 
 typedef struct rsd
diff --git a/audio/drivers/rwebaudio.c b/audio/drivers/rwebaudio.c
index 3e819b2049..8723e29a55 100644
--- a/audio/drivers/rwebaudio.c
+++ b/audio/drivers/rwebaudio.c
@@ -18,7 +18,7 @@
 #include <unistd.h>
 #include <boolean.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 /* forward declarations */
 unsigned RWebAudioSampleRate(void);
diff --git a/audio/drivers/sdl_audio.c b/audio/drivers/sdl_audio.c
index b6aebceb8b..5726bd7371 100644
--- a/audio/drivers/sdl_audio.c
+++ b/audio/drivers/sdl_audio.c
@@ -14,20 +14,20 @@
  *  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include <boolean.h>
 #include <rthreads/rthreads.h>
 #include <queues/fifo_queue.h>
 #include <retro_inline.h>
 #include <retro_math.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
-#include <stdint.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "SDL.h"
 #include "SDL_audio.h"
 
diff --git a/audio/drivers/switch_audio.c b/audio/drivers/switch_audio.c
index a43d97c78b..26b8b42a95 100644
--- a/audio/drivers/switch_audio.c
+++ b/audio/drivers/switch_audio.c
@@ -20,7 +20,7 @@
 #include <stdint.h>
 
 #include "switch_audio_compat.h"
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #ifdef HAVE_LIBNX
diff --git a/audio/drivers/switch_thread_audio.c b/audio/drivers/switch_thread_audio.c
index 3bb8ba38fe..8fb07019d8 100644
--- a/audio/drivers/switch_thread_audio.c
+++ b/audio/drivers/switch_thread_audio.c
@@ -28,7 +28,7 @@
 #endif
 
 #include <queues/fifo_queue.h>
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 #include "../../tasks/tasks_internal.h"
diff --git a/audio/drivers/tinyalsa.c b/audio/drivers/tinyalsa.c
index eb34f5784a..8625bbd58b 100644
--- a/audio/drivers/tinyalsa.c
+++ b/audio/drivers/tinyalsa.c
@@ -64,7 +64,7 @@
 #include <retro_inline.h>
 #include <retro_endianness.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 /* Implementation tinyalsa pcm */
diff --git a/audio/drivers/wasapi.c b/audio/drivers/wasapi.c
index 8348256af8..7d66371e9c 100644
--- a/audio/drivers/wasapi.c
+++ b/audio/drivers/wasapi.c
@@ -41,7 +41,7 @@ DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0
 #include <lists/string_list.h>
 #include <queues/fifo_queue.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 #include "../../configuration.h"
 
diff --git a/audio/drivers/wiiu_audio.c b/audio/drivers/wiiu_audio.c
index c13d7cf9bb..7dea64c3e5 100644
--- a/audio/drivers/wiiu_audio.c
+++ b/audio/drivers/wiiu_audio.c
@@ -21,10 +21,10 @@
 #include <wiiu/os.h>
 #include <wiiu/ax.h>
 
-#include "wiiu/wiiu_dbg.h"
-#include "wiiu/system/memory.h"
+#include "../../wiiu/wiiu_dbg.h"
+#include "../../wiiu/system/memory.h"
 
-#include "audio/audio_driver.h"
+#include "../../retroarch.h"
 
 typedef struct
 {
diff --git a/audio/drivers/xaudio.c b/audio/drivers/xaudio.c
index 83df3c9972..5ee0fb6a7a 100644
--- a/audio/drivers/xaudio.c
+++ b/audio/drivers/xaudio.c
@@ -36,7 +36,7 @@
 
 #include "xaudio.h"
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 #include "../../verbosity.h"
 
 typedef struct xaudio2 xaudio2_t;
diff --git a/audio/drivers/xenon360_audio.c b/audio/drivers/xenon360_audio.c
index fdcd585572..bf0ad4267e 100644
--- a/audio/drivers/xenon360_audio.c
+++ b/audio/drivers/xenon360_audio.c
@@ -21,7 +21,7 @@
 
 #include <retro_inline.h>
 
-#include "../audio_driver.h"
+#include "../../retroarch.h"
 
 #define SOUND_FREQUENCY 48000
 #define MAX_BUFFER 2048
diff --git a/command.c b/command.c
index 16c755c937..acebb1ce92 100755
--- a/command.c
+++ b/command.c
@@ -74,7 +74,6 @@
 #include "driver.h"
 #include "input/input_driver.h"
 #include "frontend/frontend_driver.h"
-#include "audio/audio_driver.h"
 #include "record/record_driver.h"
 #include "file_path_special.h"
 #include "autosave.h"
diff --git a/configuration.c b/configuration.c
index 17f44acb2f..e94edd2c59 100644
--- a/configuration.c
+++ b/configuration.c
@@ -33,7 +33,6 @@
 #endif
 
 #include "file_path_special.h"
-#include "audio/audio_driver.h"
 #include "gfx/video_driver.h"
 #include "input/input_driver.h"
 #include "configuration.h"
diff --git a/core_impl.c b/core_impl.c
index c43d4202eb..21e554fede 100644
--- a/core_impl.c
+++ b/core_impl.c
@@ -42,7 +42,7 @@
 #include "managers/state_manager.h"
 #include "verbosity.h"
 #include "gfx/video_driver.h"
-#include "audio/audio_driver.h"
+#include "retroarch.h"
 #include "tasks/tasks_internal.h"
 
 #ifdef HAVE_RUNAHEAD
diff --git a/dynamic.c b/dynamic.c
index 7b0990410c..583a12eab3 100644
--- a/dynamic.c
+++ b/dynamic.c
@@ -52,7 +52,6 @@
 #include "dynamic.h"
 #include "command.h"
 
-#include "audio/audio_driver.h"
 #include "record/record_driver.h"
 #include "driver.h"
 #include "performance_counters.h"
diff --git a/frontend/drivers/platform_ctr.c b/frontend/drivers/platform_ctr.c
index 71c827c446..c6871af90a 100644
--- a/frontend/drivers/platform_ctr.c
+++ b/frontend/drivers/platform_ctr.c
@@ -46,7 +46,6 @@
 #include "../../paths.h"
 #include "retroarch.h"
 #include "file_path_special.h"
-#include "audio/audio_driver.h"
 
 #include "ctr/ctr_debug.h"
 #include "ctr/exec-3dsx/exec_3dsx.h"
diff --git a/frontend/drivers/platform_switch.c b/frontend/drivers/platform_switch.c
index 2774b8f9b7..fdc5f56926 100644
--- a/frontend/drivers/platform_switch.c
+++ b/frontend/drivers/platform_switch.c
@@ -30,14 +30,14 @@
 #include <lists/file_list.h>
 #endif
 
+#include <string/stdstring.h>
+
 #include "../frontend_driver.h"
 #include "../../verbosity.h"
 #include "../../defaults.h"
 #include "../../paths.h"
 #include "../../retroarch.h"
 #include "../../file_path_special.h"
-#include "../../audio/audio_driver.h"
-#include <string/stdstring.h>
 
 #ifndef IS_SALAMANDER
 #ifdef HAVE_MENU
diff --git a/gfx/video_driver.c b/gfx/video_driver.c
index 2bebde5025..03fa524212 100644
--- a/gfx/video_driver.c
+++ b/gfx/video_driver.c
@@ -32,7 +32,6 @@
 #include <gfx/video_frame.h>
 #include <formats/image.h>
 
-#include "../audio/audio_driver.h"
 #include "../menu/menu_shader.h"
 
 #ifdef HAVE_CONFIG_H
diff --git a/griffin/griffin.c b/griffin/griffin.c
index e93ad86c44..32b46a330c 100644
--- a/griffin/griffin.c
+++ b/griffin/griffin.c
@@ -890,7 +890,6 @@ DRIVERS
 #include "../gfx/video_display_server.c"
 #include "../gfx/video_coord_array.c"
 #include "../input/input_driver.c"
-#include "../audio/audio_driver.c"
 #include "../libretro-common/audio/audio_mixer.c"
 
 /*============================================================
diff --git a/list_special.c b/list_special.c
index fe4815404b..345aeb6b3e 100644
--- a/list_special.c
+++ b/list_special.c
@@ -40,7 +40,6 @@
 #include "core_info.h"
 #include "gfx/video_driver.h"
 #include "input/input_driver.h"
-#include "audio/audio_driver.h"
 #include "record/record_driver.h"
 #include "midi/midi_driver.h"
 #include "configuration.h"
diff --git a/managers/state_manager.c b/managers/state_manager.c
index 66ae8c1513..0b35a276c6 100644
--- a/managers/state_manager.c
+++ b/managers/state_manager.c
@@ -32,7 +32,6 @@
 #include "../core.h"
 #include "../retroarch.h"
 #include "../verbosity.h"
-#include "../audio/audio_driver.h"
 
 #ifdef HAVE_NETWORKING
 #include "../network/netplay/netplay.h"
diff --git a/menu/cbs/menu_cbs_get_value.c b/menu/cbs/menu_cbs_get_value.c
index 831050c47c..1f6e385744 100644
--- a/menu/cbs/menu_cbs_get_value.c
+++ b/menu/cbs/menu_cbs_get_value.c
@@ -30,7 +30,6 @@
 #include "../../tasks/tasks_internal.h"
 #include "../../input/input_driver.h"
 
-#include "../../audio/audio_driver.h"
 #include "../../core.h"
 #include "../../core_info.h"
 #include "../../configuration.h"
diff --git a/menu/cbs/menu_cbs_left.c b/menu/cbs/menu_cbs_left.c
index e8373889e0..04abaac5d3 100644
--- a/menu/cbs/menu_cbs_left.c
+++ b/menu/cbs/menu_cbs_left.c
@@ -36,7 +36,6 @@
 #include "../../managers/cheat_manager.h"
 #include "../../file_path_special.h"
 #include "../../driver.h"
-#include "../../audio/audio_driver.h"
 #include "../../gfx/video_driver.h"
 #include "../../retroarch.h"
 #include "../../network/netplay/netplay.h"
diff --git a/menu/cbs/menu_cbs_ok.c b/menu/cbs/menu_cbs_ok.c
index 6cd4e6e19c..e3128cfe91 100644
--- a/menu/cbs/menu_cbs_ok.c
+++ b/menu/cbs/menu_cbs_ok.c
@@ -49,7 +49,6 @@
 #include "../menu_content.h"
 #include "../menu_shader.h"
 
-#include "../../audio/audio_driver.h"
 #include "../../core.h"
 #include "../../configuration.h"
 #include "../../core_info.h"
diff --git a/menu/cbs/menu_cbs_right.c b/menu/cbs/menu_cbs_right.c
index 1d16f9043c..709ca06c65 100644
--- a/menu/cbs/menu_cbs_right.c
+++ b/menu/cbs/menu_cbs_right.c
@@ -30,7 +30,6 @@
 #include "../menu_setting.h"
 #include "../menu_shader.h"
 
-#include "../../audio/audio_driver.h"
 #include "../../configuration.h"
 #include "../../core.h"
 #include "../../core_info.h"
diff --git a/menu/cbs/menu_cbs_start.c b/menu/cbs/menu_cbs_start.c
index 0c1f5f2079..d9f8e49689 100644
--- a/menu/cbs/menu_cbs_start.c
+++ b/menu/cbs/menu_cbs_start.c
@@ -28,7 +28,6 @@
 #include "../menu_setting.h"
 #include "../menu_shader.h"
 
-#include "../../audio/audio_driver.h"
 #include "../../configuration.h"
 #include "../../core.h"
 #include "../../core_info.h"
diff --git a/menu/cbs/menu_cbs_sublabel.c b/menu/cbs/menu_cbs_sublabel.c
index ce4a3a8825..9cac95fe16 100644
--- a/menu/cbs/menu_cbs_sublabel.c
+++ b/menu/cbs/menu_cbs_sublabel.c
@@ -15,20 +15,21 @@
 
 #include <compat/strl.h>
 
-#include "../../audio/audio_driver.h"
+#include <string.h>
+#include <string/stdstring.h>
+#include <file/file_path.h>
+
 #include "../menu_driver.h"
 #include "../menu_cbs.h"
 
+#include "../../retroarch.h"
+
 #ifdef HAVE_CHEEVOS
 #include "../../cheevos-new/cheevos.h"
 #endif
 #include "../../core_info.h"
 #include "../../verbosity.h"
 
-#include <string.h>
-#include <string/stdstring.h>
-#include <file/file_path.h>
-
 #ifndef BIND_ACTION_SUBLABEL
 #define BIND_ACTION_SUBLABEL(cbs, name) \
    cbs->action_sublabel = name; \
diff --git a/menu/cbs/menu_cbs_title.c b/menu/cbs/menu_cbs_title.c
index 1a140e1a64..34deb8ed7f 100644
--- a/menu/cbs/menu_cbs_title.c
+++ b/menu/cbs/menu_cbs_title.c
@@ -19,11 +19,11 @@
 
 #include <compat/strl.h>
 
-#include "../../audio/audio_driver.h"
-
 #include "../menu_driver.h"
 #include "../menu_cbs.h"
 
+#include "../../retroarch.h"
+
 #ifndef BIND_ACTION_GET_TITLE
 #define BIND_ACTION_GET_TITLE(cbs, name) \
    cbs->action_get_title = name; \
diff --git a/menu/menu_displaylist.c b/menu/menu_displaylist.c
index 7340880aff..c2eb68ef9a 100644
--- a/menu/menu_displaylist.c
+++ b/menu/menu_displaylist.c
@@ -69,7 +69,6 @@
 #include "widgets/menu_dialog.h"
 #include "widgets/menu_filebrowser.h"
 
-#include "../audio/audio_driver.h"
 #include "../configuration.h"
 #include "../file_path_special.h"
 #include "../defaults.h"
diff --git a/menu/menu_driver.h b/menu/menu_driver.h
index dcdfa94c78..16f44cf80c 100644
--- a/menu/menu_driver.h
+++ b/menu/menu_driver.h
@@ -33,7 +33,7 @@
 #include "menu_input.h"
 #include "menu_entries.h"
 
-#include "../audio/audio_driver.h"
+#include "../retroarch.h"
 #include "../file_path_special.h"
 #include "../gfx/font_driver.h"
 #include "../gfx/video_coord_array.h"
diff --git a/menu/menu_setting.c b/menu/menu_setting.c
index e58a450ec8..339184936a 100644
--- a/menu/menu_setting.c
+++ b/menu/menu_setting.c
@@ -76,7 +76,6 @@
 #include "../list_special.h"
 #include "../wifi/wifi_driver.h"
 #include "../record/record_driver.h"
-#include "../audio/audio_driver.h"
 #include "../input/input_driver.h"
 #include "../midi/midi_driver.h"
 #include "../tasks/tasks_internal.h"
diff --git a/retroarch.c b/retroarch.c
index e922cc70df..c9476e9b2a 100644
--- a/retroarch.c
+++ b/retroarch.c
@@ -46,7 +46,10 @@
 #include <compat/strl.h>
 #include <compat/strcasestr.h>
 #include <compat/getopt.h>
+#include <audio/conversion/float_to_s16.h>
+#include <audio/conversion/s16_to_float.h>
 #include <audio/audio_mixer.h>
+#include <audio/dsp_filter.h>
 #include <compat/posix_string.h>
 #include <streams/file_stream.h>
 #include <streams/interface_stream.h>
@@ -115,7 +118,6 @@
 #include "verbosity.h"
 
 #include "frontend/frontend_driver.h"
-#include "audio/audio_driver.h"
 #ifdef HAVE_THREADS
 #include "../gfx/video_thread_wrapper.h"
 #endif
@@ -130,6 +132,7 @@
 #include "managers/core_option_manager.h"
 #include "managers/cheat_manager.h"
 #include "managers/state_manager.h"
+#include "tasks/task_audio_mixer.h"
 #include "tasks/task_content.h"
 #include "tasks/tasks_internal.h"
 #include "performance_counters.h"
@@ -143,6 +146,8 @@
 #include "runahead/run_ahead.h"
 #endif
 
+#include "audio/audio_thread_wrapper.h"
+
 #define _PSUPP(var, name, desc) printf("  %s:\n\t\t%s: %s\n", name, desc, var ? "yes" : "no")
 
 #define FAIL_CPU(simd_type) do { \
@@ -301,6 +306,1777 @@ extern bool input_driver_flushing_input;
 
 static char launch_arguments[4096];
 
+/* Audio */
+
+#define AUDIO_BUFFER_FREE_SAMPLES_COUNT (8 * 1024)
+
+#define MENU_SOUND_FORMATS "ogg|mod|xm|s3m|mp3|flac"
+
+/**
+ * db_to_gain:
+ * @db          : Decibels.
+ *
+ * Converts decibels to voltage gain.
+ *
+ * Returns: voltage gain value.
+ **/
+#define db_to_gain(db) (powf(10.0f, (db) / 20.0f))
+
+static const audio_driver_t *audio_drivers[] = {
+#ifdef HAVE_ALSA
+   &audio_alsa,
+#if !defined(__QNX__) && defined(HAVE_THREADS)
+   &audio_alsathread,
+#endif
+#endif
+#ifdef HAVE_TINYALSA
+	&audio_tinyalsa,
+#endif
+#if defined(HAVE_AUDIOIO)
+   &audio_audioio,
+#endif
+#if defined(HAVE_OSS) || defined(HAVE_OSS_BSD)
+   &audio_oss,
+#endif
+#ifdef HAVE_RSOUND
+   &audio_rsound,
+#endif
+#ifdef HAVE_COREAUDIO
+   &audio_coreaudio,
+#endif
+#ifdef HAVE_COREAUDIO3
+   &audio_coreaudio3,
+#endif
+#ifdef HAVE_AL
+   &audio_openal,
+#endif
+#ifdef HAVE_SL
+   &audio_opensl,
+#endif
+#ifdef HAVE_ROAR
+   &audio_roar,
+#endif
+#ifdef HAVE_JACK
+   &audio_jack,
+#endif
+#if defined(HAVE_SDL) || defined(HAVE_SDL2)
+   &audio_sdl,
+#endif
+#ifdef HAVE_XAUDIO
+   &audio_xa,
+#endif
+#ifdef HAVE_DSOUND
+   &audio_dsound,
+#endif
+#ifdef HAVE_WASAPI
+   &audio_wasapi,
+#endif
+#ifdef HAVE_PULSE
+   &audio_pulse,
+#endif
+#ifdef __CELLOS_LV2__
+   &audio_ps3,
+#endif
+#ifdef XENON
+   &audio_xenon360,
+#endif
+#ifdef GEKKO
+   &audio_gx,
+#endif
+#ifdef WIIU
+   &audio_ax,
+#endif
+#ifdef EMSCRIPTEN
+   &audio_rwebaudio,
+#endif
+#if defined(PSP) || defined(VITA) || defined(ORBIS)
+  &audio_psp,
+#endif
+#if defined(PS2)
+  &audio_ps2,
+#endif
+#ifdef _3DS
+   &audio_ctr_csnd,
+   &audio_ctr_dsp,
+#endif
+#ifdef SWITCH
+   &audio_switch_thread,
+   &audio_switch,
+#endif
+   &audio_null,
+   NULL,
+};
+
+static struct audio_mixer_stream audio_mixer_streams[AUDIO_MIXER_MAX_SYSTEM_STREAMS] = {{0}};
+
+static size_t audio_driver_chunk_size                    = 0;
+static size_t audio_driver_chunk_nonblock_size           = 0;
+static size_t audio_driver_chunk_block_size              = 0;
+
+static size_t audio_driver_rewind_ptr                    = 0;
+static size_t audio_driver_rewind_size                   = 0;
+
+static int16_t *audio_driver_rewind_buf                  = NULL;
+static int16_t *audio_driver_output_samples_conv_buf     = NULL;
+
+static unsigned audio_driver_free_samples_buf[AUDIO_BUFFER_FREE_SAMPLES_COUNT];
+static uint64_t audio_driver_free_samples_count          = 0;
+
+static size_t audio_driver_buffer_size                   = 0;
+static size_t audio_driver_data_ptr                      = 0;
+
+static bool audio_driver_control                         = false;
+static bool audio_driver_mixer_mute_enable               = false;
+static bool audio_driver_mute_enable                     = false;
+static bool audio_driver_use_float                       = false;
+static bool audio_driver_active                          = false;
+static bool audio_mixer_active                           = false;
+
+static float audio_driver_rate_control_delta             = 0.0f;
+static float audio_driver_input                          = 0.0f;
+static float audio_driver_volume_gain                    = 0.0f;
+static float audio_driver_mixer_volume_gain              = 0.0f;
+
+static float *audio_driver_input_data                    = NULL;
+static float *audio_driver_output_samples_buf            = NULL;
+
+static double audio_source_ratio_original                = 0.0f;
+static double audio_source_ratio_current                 = 0.0f;
+
+static struct retro_audio_callback audio_callback        = {0};
+
+static retro_dsp_filter_t *audio_driver_dsp              = NULL;
+static struct string_list *audio_driver_devices_list     = NULL;
+static const retro_resampler_t *audio_driver_resampler   = NULL;
+
+static void *audio_driver_resampler_data                 = NULL;
+static const audio_driver_t *current_audio               = NULL;
+static void *audio_driver_context_audio_data             = NULL;
+
+static bool audio_suspended                              = false;
+static bool audio_is_threaded                            = false;
+
+static void audio_mixer_play_stop_sequential_cb(
+      audio_mixer_sound_t *sound, unsigned reason);
+static void audio_mixer_play_stop_cb(
+      audio_mixer_sound_t *sound, unsigned reason);
+static void audio_mixer_menu_stop_cb(
+      audio_mixer_sound_t *sound, unsigned reason);
+
+static enum resampler_quality audio_driver_get_resampler_quality(void)
+{
+   settings_t *settings = config_get_ptr();
+
+   if (!settings)
+      return RESAMPLER_QUALITY_DONTCARE;
+
+   return (enum resampler_quality)settings->uints.audio_resampler_quality;
+}
+
+audio_mixer_stream_t *audio_driver_mixer_get_stream(unsigned i)
+{
+   if (i > (AUDIO_MIXER_MAX_SYSTEM_STREAMS-1))
+      return NULL;
+   return &audio_mixer_streams[i];
+}
+
+const char *audio_driver_mixer_get_stream_name(unsigned i)
+{
+   if (i > (AUDIO_MIXER_MAX_SYSTEM_STREAMS-1))
+      return "N/A";
+   if (!string_is_empty(audio_mixer_streams[i].name))
+      return audio_mixer_streams[i].name;
+   return "N/A";
+}
+
+/**
+ * compute_audio_buffer_statistics:
+ *
+ * Computes audio buffer statistics.
+ *
+ **/
+bool compute_audio_buffer_statistics(audio_statistics_t *stats)
+{
+   unsigned i, low_water_size, high_water_size, avg, stddev;
+   uint64_t accum                = 0;
+   uint64_t accum_var            = 0;
+   unsigned low_water_count      = 0;
+   unsigned high_water_count     = 0;
+   unsigned samples              = MIN(
+         (unsigned)audio_driver_free_samples_count,
+         AUDIO_BUFFER_FREE_SAMPLES_COUNT);
+
+   if (!stats || samples < 3)
+      return false;
+
+   stats->samples                = (unsigned)audio_driver_free_samples_count;
+
+#ifdef WARPUP
+   /* uint64 to double not implemented, fair chance
+    * signed int64 to double doesn't exist either */
+   /* https://forums.libretro.com/t/unsupported-platform-help/13903/ */
+   (void)stddev;
+#elif defined(_MSC_VER) && _MSC_VER <= 1200
+   /* FIXME: error C2520: conversion from unsigned __int64
+    * to double not implemented, use signed __int64 */
+   (void)stddev;
+#else
+   for (i = 1; i < samples; i++)
+      accum += audio_driver_free_samples_buf[i];
+
+   avg = (unsigned)accum / (samples - 1);
+
+   for (i = 1; i < samples; i++)
+   {
+      int diff     = avg - audio_driver_free_samples_buf[i];
+      accum_var   += diff * diff;
+   }
+
+   stddev                                = (unsigned)
+      sqrt((double)accum_var / (samples - 2));
+
+   stats->average_buffer_saturation      = (1.0f - (float)avg
+         / audio_driver_buffer_size) * 100.0;
+   stats->std_deviation_percentage       = ((float)stddev
+         / audio_driver_buffer_size)  * 100.0;
+#endif
+
+   low_water_size  = (unsigned)(audio_driver_buffer_size * 3 / 4);
+   high_water_size = (unsigned)(audio_driver_buffer_size     / 4);
+
+   for (i = 1; i < samples; i++)
+   {
+      if (audio_driver_free_samples_buf[i] >= low_water_size)
+         low_water_count++;
+      else if (audio_driver_free_samples_buf[i] <= high_water_size)
+         high_water_count++;
+   }
+
+   stats->close_to_underrun      = (100.0 * low_water_count)  / (samples - 1);
+   stats->close_to_blocking      = (100.0 * high_water_count) / (samples - 1);
+
+   return true;
+}
+
+static void report_audio_buffer_statistics(void)
+{
+   audio_statistics_t audio_stats = {0.0f};
+   if (!compute_audio_buffer_statistics(&audio_stats))
+      return;
+
+#ifdef DEBUG
+   RARCH_LOG("[Audio]: Average audio buffer saturation: %.2f %%,"
+         " standard deviation (percentage points): %.2f %%.\n"
+         "[Audio]: Amount of time spent close to underrun: %.2f %%."
+         " Close to blocking: %.2f %%.\n",
+         audio_stats.average_buffer_saturation,
+         audio_stats.std_deviation_percentage,
+         audio_stats.close_to_underrun,
+         audio_stats.close_to_blocking);
+#endif
+}
+
+/**
+ * audio_driver_find_handle:
+ * @idx                : index of driver to get handle to.
+ *
+ * Returns: handle to audio driver at index. Can be NULL
+ * if nothing found.
+ **/
+const void *audio_driver_find_handle(int idx)
+{
+   const void *drv = audio_drivers[idx];
+   if (!drv)
+      return NULL;
+   return drv;
+}
+
+/**
+ * audio_driver_find_ident:
+ * @idx                : index of driver to get handle to.
+ *
+ * Returns: Human-readable identifier of audio driver at index. Can be NULL
+ * if nothing found.
+ **/
+const char *audio_driver_find_ident(int idx)
+{
+   const audio_driver_t *drv = audio_drivers[idx];
+   if (!drv)
+      return NULL;
+   return drv->ident;
+}
+
+/**
+ * config_get_audio_driver_options:
+ *
+ * Get an enumerated list of all audio driver names, separated by '|'.
+ *
+ * Returns: string listing of all audio driver names, separated by '|'.
+ **/
+const char *config_get_audio_driver_options(void)
+{
+   return char_list_new_special(STRING_LIST_AUDIO_DRIVERS, NULL);
+}
+
+static void audio_driver_deinit_resampler(void)
+{
+   if (audio_driver_resampler && audio_driver_resampler_data)
+      audio_driver_resampler->free(audio_driver_resampler_data);
+   audio_driver_resampler      = NULL;
+   audio_driver_resampler_data = NULL;
+}
+
+
+static bool audio_driver_deinit_internal(void)
+{
+   settings_t *settings = config_get_ptr();
+
+   if (current_audio && current_audio->free)
+   {
+      if (audio_driver_context_audio_data)
+         current_audio->free(audio_driver_context_audio_data);
+      audio_driver_context_audio_data = NULL;
+   }
+
+   if (audio_driver_output_samples_conv_buf)
+      free(audio_driver_output_samples_conv_buf);
+   audio_driver_output_samples_conv_buf = NULL;
+
+   audio_driver_data_ptr                = 0;
+
+   if (audio_driver_rewind_buf)
+      free(audio_driver_rewind_buf);
+   audio_driver_rewind_buf   = NULL;
+
+   audio_driver_rewind_size  = 0;
+
+   if (settings && !settings->bools.audio_enable)
+   {
+      audio_driver_active = false;
+      return false;
+   }
+
+   audio_driver_deinit_resampler();
+
+   if (audio_driver_input_data)
+      free(audio_driver_input_data);
+   audio_driver_input_data = NULL;
+
+   if (audio_driver_output_samples_buf)
+      free(audio_driver_output_samples_buf);
+   audio_driver_output_samples_buf = NULL;
+
+   command_event(CMD_EVENT_DSP_FILTER_DEINIT, NULL);
+
+   report_audio_buffer_statistics();
+
+   return true;
+}
+
+static void audio_driver_mixer_deinit(void)
+{
+   unsigned i;
+
+   audio_mixer_active = false;
+
+   for (i = 0; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
+   {
+      audio_driver_mixer_stop_stream(i);
+      audio_driver_mixer_remove_stream(i);
+   }
+
+   audio_mixer_done();
+}
+
+static bool audio_driver_free_devices_list(void)
+{
+   if (!current_audio || !current_audio->device_list_free
+         || !audio_driver_context_audio_data)
+      return false;
+   current_audio->device_list_free(audio_driver_context_audio_data,
+         audio_driver_devices_list);
+   audio_driver_devices_list = NULL;
+   return true;
+}
+
+static bool audio_driver_deinit(void)
+{
+   audio_driver_mixer_deinit();
+   audio_driver_free_devices_list();
+
+   if (!audio_driver_deinit_internal())
+      return false;
+   return true;
+}
+
+
+static void audio_driver_mixer_init(unsigned audio_out_rate)
+{
+   audio_mixer_init(audio_out_rate);
+}
+
+static bool audio_driver_find_driver(void)
+{
+   int i;
+   driver_ctx_info_t drv;
+   settings_t *settings = config_get_ptr();
+
+   drv.label = "audio_driver";
+   drv.s     = settings->arrays.audio_driver;
+
+   driver_ctl(RARCH_DRIVER_CTL_FIND_INDEX, &drv);
+
+   i = (int)drv.len;
+
+   if (i >= 0)
+      current_audio = (const audio_driver_t*)audio_driver_find_handle(i);
+   else
+   {
+      if (verbosity_is_enabled())
+      {
+         unsigned d;
+         RARCH_ERR("Couldn't find any audio driver named \"%s\"\n",
+               settings->arrays.audio_driver);
+         RARCH_LOG_OUTPUT("Available audio drivers are:\n");
+         for (d = 0; audio_driver_find_handle(d); d++)
+            RARCH_LOG_OUTPUT("\t%s\n", audio_driver_find_ident(d));
+         RARCH_WARN("Going to default to first audio driver...\n");
+      }
+
+      current_audio = (const audio_driver_t*)audio_driver_find_handle(0);
+
+      if (!current_audio)
+         retroarch_fail(1, "audio_driver_find()");
+   }
+
+   return true;
+}
+
+
+static bool audio_driver_init_internal(bool audio_cb_inited)
+{
+   unsigned new_rate     = 0;
+   float   *aud_inp_data = NULL;
+   float *samples_buf    = NULL;
+   int16_t *conv_buf     = NULL;
+   int16_t *rewind_buf   = NULL;
+   size_t max_bufsamples = AUDIO_CHUNK_SIZE_NONBLOCKING * 2;
+   settings_t *settings  = config_get_ptr();
+   /* Accomodate rewind since at some point we might have two full buffers. */
+   size_t outsamples_max = AUDIO_CHUNK_SIZE_NONBLOCKING * 2 * AUDIO_MAX_RATIO *
+      settings->floats.slowmotion_ratio;
+
+   convert_s16_to_float_init_simd();
+   convert_float_to_s16_init_simd();
+
+   conv_buf = (int16_t*)malloc(outsamples_max
+         * sizeof(int16_t));
+   /* Used for recording even if audio isn't enabled. */
+   retro_assert(conv_buf != NULL);
+
+   if (!conv_buf)
+      goto error;
+
+   audio_driver_output_samples_conv_buf = conv_buf;
+   audio_driver_chunk_block_size        = AUDIO_CHUNK_SIZE_BLOCKING;
+   audio_driver_chunk_nonblock_size     = AUDIO_CHUNK_SIZE_NONBLOCKING;
+   audio_driver_chunk_size              = audio_driver_chunk_block_size;
+
+   /* Needs to be able to hold full content of a full max_bufsamples
+    * in addition to its own. */
+   rewind_buf = (int16_t*)malloc(max_bufsamples * sizeof(int16_t));
+   retro_assert(rewind_buf != NULL);
+
+   if (!rewind_buf)
+      goto error;
+
+   audio_driver_rewind_buf              = rewind_buf;
+   audio_driver_rewind_size             = max_bufsamples;
+
+   if (!settings->bools.audio_enable)
+   {
+      audio_driver_active = false;
+      return false;
+   }
+
+   audio_driver_find_driver();
+#ifdef HAVE_THREADS
+   if (audio_cb_inited)
+   {
+      audio_is_threaded = true;
+      RARCH_LOG("[Audio]: Starting threaded audio driver ...\n");
+      if (!audio_init_thread(
+               &current_audio,
+               &audio_driver_context_audio_data,
+               *settings->arrays.audio_device
+               ? settings->arrays.audio_device : NULL,
+               settings->uints.audio_out_rate, &new_rate,
+               settings->uints.audio_latency,
+               settings->uints.audio_block_frames,
+               current_audio))
+      {
+         RARCH_ERR("Cannot open threaded audio driver ... Exiting ...\n");
+         retroarch_fail(1, "audio_driver_init_internal()");
+      }
+   }
+   else
+#endif
+   {
+      audio_is_threaded = false;
+      audio_driver_context_audio_data =
+         current_audio->init(*settings->arrays.audio_device ?
+               settings->arrays.audio_device : NULL,
+               settings->uints.audio_out_rate,
+               settings->uints.audio_latency,
+               settings->uints.audio_block_frames,
+               &new_rate);
+   }
+
+   if (new_rate != 0)
+   {
+      configuration_set_int(settings, settings->uints.audio_out_rate, new_rate);
+   }
+
+   if (!audio_driver_context_audio_data)
+   {
+      RARCH_ERR("Failed to initialize audio driver. Will continue without audio.\n");
+      audio_driver_active = false;
+   }
+
+   audio_driver_use_float = false;
+   if (     audio_driver_active
+         && current_audio->use_float(audio_driver_context_audio_data))
+      audio_driver_use_float = true;
+
+   if (!settings->bools.audio_sync && audio_driver_active)
+   {
+      command_event(CMD_EVENT_AUDIO_SET_NONBLOCKING_STATE, NULL);
+      audio_driver_chunk_size = audio_driver_chunk_nonblock_size;
+   }
+
+   if (audio_driver_input <= 0.0f)
+   {
+      /* Should never happen. */
+      RARCH_WARN("Input rate is invalid (%.3f Hz). Using output rate (%u Hz).\n",
+            audio_driver_input, settings->uints.audio_out_rate);
+      audio_driver_input = settings->uints.audio_out_rate;
+   }
+
+   audio_source_ratio_original   = audio_source_ratio_current =
+      (double)settings->uints.audio_out_rate / audio_driver_input;
+
+   if (!retro_resampler_realloc(
+            &audio_driver_resampler_data,
+            &audio_driver_resampler,
+            settings->arrays.audio_resampler,
+            audio_driver_get_resampler_quality(),
+            audio_source_ratio_original))
+   {
+      RARCH_ERR("Failed to initialize resampler \"%s\".\n",
+            settings->arrays.audio_resampler);
+      audio_driver_active = false;
+   }
+
+   aud_inp_data = (float*)malloc(max_bufsamples * sizeof(float));
+   retro_assert(aud_inp_data != NULL);
+
+   if (!aud_inp_data)
+      goto error;
+
+   audio_driver_input_data = aud_inp_data;
+   audio_driver_data_ptr   = 0;
+
+   retro_assert(settings->uints.audio_out_rate <
+         audio_driver_input * AUDIO_MAX_RATIO);
+
+   samples_buf = (float*)malloc(outsamples_max * sizeof(float));
+
+   retro_assert(samples_buf != NULL);
+
+   if (!samples_buf)
+      goto error;
+
+   audio_driver_output_samples_buf = samples_buf;
+   audio_driver_control            = false;
+
+   if (
+         !audio_cb_inited
+         && audio_driver_active
+         && settings->bools.audio_rate_control
+         )
+   {
+      /* Audio rate control requires write_avail
+       * and buffer_size to be implemented. */
+      if (current_audio->buffer_size)
+      {
+         audio_driver_buffer_size =
+            current_audio->buffer_size(audio_driver_context_audio_data);
+         audio_driver_control     = true;
+      }
+      else
+         RARCH_WARN("Audio rate control was desired, but driver does not support needed features.\n");
+   }
+
+   command_event(CMD_EVENT_DSP_FILTER_INIT, NULL);
+
+   audio_driver_free_samples_count = 0;
+
+   audio_driver_mixer_init(settings->uints.audio_out_rate);
+
+   /* Threaded driver is initially stopped. */
+   if (
+         audio_driver_active
+         && audio_cb_inited
+         )
+      audio_driver_start(false);
+
+   return true;
+
+error:
+   return audio_driver_deinit();
+}
+
+void audio_driver_set_nonblocking_state(bool enable)
+{
+   settings_t *settings = config_get_ptr();
+   if (
+         audio_driver_active
+         && audio_driver_context_audio_data
+      )
+      current_audio->set_nonblock_state(
+            audio_driver_context_audio_data,
+            settings->bools.audio_sync ? enable : true);
+
+   audio_driver_chunk_size = enable ?
+      audio_driver_chunk_nonblock_size :
+      audio_driver_chunk_block_size;
+}
+
+/**
+ * audio_driver_flush:
+ * @data                 : pointer to audio buffer.
+ * @right                : amount of samples to write.
+ *
+ * Writes audio samples to audio driver. Will first
+ * perform DSP processing (if enabled) and resampling.
+ **/
+static void audio_driver_flush(const int16_t *data, size_t samples,
+      bool is_slowmotion)
+{
+   struct resampler_data src_data;
+   float audio_volume_gain           = !audio_driver_mute_enable ?
+      audio_driver_volume_gain : 0.0f;
+
+   src_data.data_out                 = NULL;
+   src_data.output_frames            = 0;
+
+   convert_s16_to_float(audio_driver_input_data, data, samples,
+         audio_volume_gain);
+
+   src_data.data_in                  = audio_driver_input_data;
+   src_data.input_frames             = samples >> 1;
+
+   if (audio_driver_dsp)
+   {
+      struct retro_dsp_data dsp_data;
+
+      dsp_data.input                 = NULL;
+      dsp_data.input_frames          = 0;
+      dsp_data.output                = NULL;
+      dsp_data.output_frames         = 0;
+
+      dsp_data.input                 = audio_driver_input_data;
+      dsp_data.input_frames          = (unsigned)(samples >> 1);
+
+      retro_dsp_filter_process(audio_driver_dsp, &dsp_data);
+
+      if (dsp_data.output)
+      {
+         src_data.data_in            = dsp_data.output;
+         src_data.input_frames       = dsp_data.output_frames;
+      }
+   }
+
+   src_data.data_out = audio_driver_output_samples_buf;
+
+   if (audio_driver_control)
+   {
+      /* Readjust the audio input rate. */
+      int      half_size   = (int)(audio_driver_buffer_size / 2);
+      int      avail       =
+         (int)current_audio->write_avail(audio_driver_context_audio_data);
+      int      delta_mid   = avail - half_size;
+      double   direction   = (double)delta_mid / half_size;
+      double   adjust      = 1.0 + audio_driver_rate_control_delta * direction;
+      unsigned write_idx   = audio_driver_free_samples_count++ &
+         (AUDIO_BUFFER_FREE_SAMPLES_COUNT - 1);
+
+      audio_driver_free_samples_buf
+         [write_idx]               = avail;
+      audio_source_ratio_current   =
+         audio_source_ratio_original * adjust;
+
+#if 0
+      if (verbosity_is_enabled())
+      {
+         RARCH_LOG_OUTPUT("[Audio]: Audio buffer is %u%% full\n",
+               (unsigned)(100 - (avail * 100) / audio_driver_buffer_size));
+         RARCH_LOG_OUTPUT("[Audio]: New rate: %lf, Orig rate: %lf\n",
+               audio_source_ratio_current,
+               audio_source_ratio_original);
+      }
+#endif
+   }
+
+   src_data.ratio           = audio_source_ratio_current;
+
+   if (is_slowmotion)
+   {
+      settings_t *settings  = config_get_ptr();
+      src_data.ratio       *= settings->floats.slowmotion_ratio;
+   }
+
+   audio_driver_resampler->process(audio_driver_resampler_data, &src_data);
+
+   if (audio_mixer_active)
+   {
+      bool override     = audio_driver_mixer_mute_enable ? true :
+         (audio_driver_mixer_volume_gain != 1.0f) ? true : false;
+      float mixer_gain  = !audio_driver_mixer_mute_enable ?
+         audio_driver_mixer_volume_gain : 0.0f;
+      audio_mixer_mix(audio_driver_output_samples_buf,
+            src_data.output_frames, mixer_gain, override);
+   }
+
+   {
+      const void *output_data = audio_driver_output_samples_buf;
+      unsigned output_frames  = (unsigned)src_data.output_frames;
+
+      if (audio_driver_use_float)
+         output_frames  *= sizeof(float);
+      else
+      {
+         convert_float_to_s16(audio_driver_output_samples_conv_buf,
+               (const float*)output_data, output_frames * 2);
+
+         output_data     = audio_driver_output_samples_conv_buf;
+         output_frames  *= sizeof(int16_t);
+      }
+
+      if (current_audio->write(audio_driver_context_audio_data,
+               output_data, output_frames * 2) < 0)
+         audio_driver_active = false;
+   }
+}
+
+/**
+ * audio_driver_sample:
+ * @left                 : value of the left audio channel.
+ * @right                : value of the right audio channel.
+ *
+ * Audio sample render callback function.
+ **/
+void audio_driver_sample(int16_t left, int16_t right)
+{
+   if (audio_suspended)
+      return;
+
+   audio_driver_output_samples_conv_buf[audio_driver_data_ptr++] = left;
+   audio_driver_output_samples_conv_buf[audio_driver_data_ptr++] = right;
+
+   if (audio_driver_data_ptr < audio_driver_chunk_size)
+      return;
+
+   if (recording_data)
+      recording_push_audio(audio_driver_output_samples_conv_buf,
+            audio_driver_data_ptr);
+
+   if (!(runloop_paused                ||
+		   !audio_driver_active     ||
+		   !audio_driver_input_data ||
+		   !audio_driver_output_samples_buf))
+      audio_driver_flush(audio_driver_output_samples_conv_buf,
+            audio_driver_data_ptr, runloop_slowmotion);
+
+   audio_driver_data_ptr = 0;
+}
+
+static void audio_driver_menu_sample(void)
+{
+   static int16_t samples_buf[1024]       = {0};
+   struct retro_system_av_info *av_info   = video_viewport_get_system_av_info();
+   const struct retro_system_timing *info =
+      (const struct retro_system_timing*)&av_info->timing;
+   unsigned sample_count                  = (info->sample_rate / info->fps) * 2;
+   bool check_flush                       = !(
+         runloop_paused           ||
+         !audio_driver_active     ||
+         !audio_driver_input_data ||
+         !audio_driver_output_samples_buf);
+
+   while (sample_count > 1024)
+   {
+      if (recording_data)
+         recording_push_audio(samples_buf, 1024);
+      if (check_flush)
+         audio_driver_flush(samples_buf, 1024, runloop_slowmotion);
+      sample_count -= 1024;
+   }
+   if (recording_data)
+      recording_push_audio(samples_buf, sample_count);
+   if (check_flush)
+      audio_driver_flush(samples_buf, sample_count, runloop_slowmotion);
+}
+
+/**
+ * audio_driver_sample_batch:
+ * @data                 : pointer to audio buffer.
+ * @frames               : amount of audio frames to push.
+ *
+ * Batched audio sample render callback function.
+ *
+ * Returns: amount of frames sampled. Will be equal to @frames
+ * unless @frames exceeds (AUDIO_CHUNK_SIZE_NONBLOCKING / 2).
+ **/
+size_t audio_driver_sample_batch(const int16_t *data, size_t frames)
+{
+   if (frames > (AUDIO_CHUNK_SIZE_NONBLOCKING >> 1))
+      frames = AUDIO_CHUNK_SIZE_NONBLOCKING >> 1;
+
+   if (audio_suspended)
+      return frames;
+
+   if (recording_data)
+      recording_push_audio(data, frames << 1);
+
+   if (!(
+         runloop_paused           ||
+         !audio_driver_active     ||
+         !audio_driver_input_data ||
+         !audio_driver_output_samples_buf))
+      audio_driver_flush(data, frames << 1, runloop_slowmotion);
+
+   return frames;
+}
+
+/**
+ * audio_driver_sample_rewind:
+ * @left                 : value of the left audio channel.
+ * @right                : value of the right audio channel.
+ *
+ * Audio sample render callback function (rewind version).
+ * This callback function will be used instead of
+ * audio_driver_sample when rewinding is activated.
+ **/
+void audio_driver_sample_rewind(int16_t left, int16_t right)
+{
+   if (audio_driver_rewind_ptr == 0)
+      return;
+
+   audio_driver_rewind_buf[--audio_driver_rewind_ptr] = right;
+   audio_driver_rewind_buf[--audio_driver_rewind_ptr] = left;
+}
+
+/**
+ * audio_driver_sample_batch_rewind:
+ * @data                 : pointer to audio buffer.
+ * @frames               : amount of audio frames to push.
+ *
+ * Batched audio sample render callback function (rewind version).
+ *
+ * This callback function will be used instead of
+ * audio_driver_sample_batch when rewinding is activated.
+ *
+ * Returns: amount of frames sampled. Will be equal to @frames
+ * unless @frames exceeds (AUDIO_CHUNK_SIZE_NONBLOCKING / 2).
+ **/
+size_t audio_driver_sample_batch_rewind(const int16_t *data, size_t frames)
+{
+   size_t i;
+   size_t samples   = frames << 1;
+
+   for (i = 0; i < samples; i++)
+   {
+      if (audio_driver_rewind_ptr > 0)
+         audio_driver_rewind_buf[--audio_driver_rewind_ptr] = data[i];
+   }
+
+   return frames;
+}
+
+void audio_driver_dsp_filter_free(void)
+{
+   if (audio_driver_dsp)
+      retro_dsp_filter_free(audio_driver_dsp);
+   audio_driver_dsp = NULL;
+}
+
+void audio_driver_dsp_filter_init(const char *device)
+{
+   struct string_list *plugs     = NULL;
+#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
+   char *basedir   = (char*)calloc(PATH_MAX_LENGTH, sizeof(*basedir));
+   char *ext_name  = (char*)calloc(PATH_MAX_LENGTH, sizeof(*ext_name));
+   size_t str_size = PATH_MAX_LENGTH * sizeof(char);
+   fill_pathname_basedir(basedir, device, str_size);
+
+   if (!frontend_driver_get_core_extension(ext_name, str_size))
+      goto error;
+
+   plugs = dir_list_new(basedir, ext_name, false, true, false, false);
+   if (!plugs)
+      goto error;
+#endif
+   audio_driver_dsp = retro_dsp_filter_new(
+         device, plugs, audio_driver_input);
+   if (!audio_driver_dsp)
+      goto error;
+
+#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
+   free(basedir);
+   free(ext_name);
+#endif
+
+   return;
+
+error:
+#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
+   free(basedir);
+   free(ext_name);
+#endif
+   if (!audio_driver_dsp)
+      RARCH_ERR("[DSP]: Failed to initialize DSP filter \"%s\".\n", device);
+}
+
+void audio_driver_set_buffer_size(size_t bufsize)
+{
+   audio_driver_buffer_size = bufsize;
+}
+
+static void audio_driver_monitor_adjust_system_rates(void)
+{
+   float timing_skew;
+   settings_t                   *settings = config_get_ptr();
+   float video_refresh_rate               = settings->floats.video_refresh_rate;
+   float max_timing_skew                  = settings->floats.audio_max_timing_skew;
+   struct retro_system_av_info   *av_info = video_viewport_get_system_av_info();
+   const struct retro_system_timing *info =
+      (const struct retro_system_timing*)&av_info->timing;
+
+   if (info->sample_rate <= 0.0)
+      return;
+
+   timing_skew             = fabs(1.0f - info->fps / video_refresh_rate);
+   audio_driver_input      = info->sample_rate;
+
+   if (timing_skew <= max_timing_skew && !settings->bools.vrr_runloop_enable)
+      audio_driver_input *= (video_refresh_rate / info->fps);
+
+   RARCH_LOG("[Audio]: Set audio input rate to: %.2f Hz.\n",
+         audio_driver_input);
+}
+
+void audio_driver_setup_rewind(void)
+{
+   unsigned i;
+
+   /* Push audio ready to be played. */
+   audio_driver_rewind_ptr = audio_driver_rewind_size;
+
+   for (i = 0; i < audio_driver_data_ptr; i += 2)
+   {
+      if (audio_driver_rewind_ptr > 0)
+         audio_driver_rewind_buf[--audio_driver_rewind_ptr] =
+            audio_driver_output_samples_conv_buf[i + 1];
+
+      if (audio_driver_rewind_ptr > 0)
+         audio_driver_rewind_buf[--audio_driver_rewind_ptr] =
+            audio_driver_output_samples_conv_buf[i + 0];
+   }
+
+   audio_driver_data_ptr = 0;
+}
+
+
+bool audio_driver_get_devices_list(void **data)
+{
+   struct string_list**ptr = (struct string_list**)data;
+   if (!ptr)
+      return false;
+   *ptr = audio_driver_devices_list;
+   return true;
+}
+
+bool audio_driver_mixer_extension_supported(const char *ext)
+{
+   union string_list_elem_attr attr;
+   unsigned i;
+   bool ret                      = false;
+   struct string_list *str_list  = string_list_new();
+
+   attr.i = 0;
+
+#ifdef HAVE_STB_VORBIS
+   string_list_append(str_list, "ogg", attr);
+#endif
+#ifdef HAVE_IBXM
+   string_list_append(str_list, "mod", attr);
+   string_list_append(str_list, "s3m", attr);
+   string_list_append(str_list, "xm", attr);
+#endif
+#ifdef HAVE_DR_FLAC
+   string_list_append(str_list, "flac", attr);
+#endif
+#ifdef HAVE_DR_MP3
+   string_list_append(str_list, "mp3", attr);
+#endif
+   string_list_append(str_list, "wav", attr);
+
+   for (i = 0; i < str_list->size; i++)
+   {
+      const char *str_ext = str_list->elems[i].data;
+      if (string_is_equal_noncase(str_ext, ext))
+      {
+         ret = true;
+         break;
+      }
+   }
+
+   string_list_free(str_list);
+
+   return ret;
+}
+
+static int audio_mixer_find_index(audio_mixer_sound_t *sound)
+{
+   unsigned i;
+
+   for (i = 0; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
+   {
+      audio_mixer_sound_t *handle = audio_mixer_streams[i].handle;
+      if (handle == sound)
+         return i;
+   }
+   return -1;
+}
+
+static void audio_mixer_play_stop_cb(
+      audio_mixer_sound_t *sound, unsigned reason)
+{
+   int idx = audio_mixer_find_index(sound);
+
+   switch (reason)
+   {
+      case AUDIO_MIXER_SOUND_FINISHED:
+         audio_mixer_destroy(sound);
+
+         if (idx >= 0)
+         {
+            unsigned i = (unsigned)idx;
+
+            if (!string_is_empty(audio_mixer_streams[i].name))
+               free(audio_mixer_streams[i].name);
+
+            audio_mixer_streams[i].name    = NULL;
+            audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_NONE;
+            audio_mixer_streams[i].volume  = 0.0f;
+            audio_mixer_streams[i].buf     = NULL;
+            audio_mixer_streams[i].stop_cb = NULL;
+            audio_mixer_streams[i].handle  = NULL;
+            audio_mixer_streams[i].voice   = NULL;
+         }
+         break;
+      case AUDIO_MIXER_SOUND_STOPPED:
+         break;
+      case AUDIO_MIXER_SOUND_REPEATED:
+         break;
+   }
+}
+
+static void audio_mixer_menu_stop_cb(
+      audio_mixer_sound_t *sound, unsigned reason)
+{
+   int idx = audio_mixer_find_index(sound);
+
+   switch (reason)
+   {
+      case AUDIO_MIXER_SOUND_FINISHED:
+         if (idx >= 0)
+         {
+            unsigned i = (unsigned)idx;
+            audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_STOPPED;
+            audio_mixer_streams[i].volume  = 0.0f;
+         }
+         break;
+      case AUDIO_MIXER_SOUND_STOPPED:
+         break;
+      case AUDIO_MIXER_SOUND_REPEATED:
+         break;
+   }
+}
+
+static void audio_mixer_play_stop_sequential_cb(
+      audio_mixer_sound_t *sound, unsigned reason)
+{
+   int idx = audio_mixer_find_index(sound);
+
+   switch (reason)
+   {
+      case AUDIO_MIXER_SOUND_FINISHED:
+         audio_mixer_destroy(sound);
+
+         if (idx >= 0)
+         {
+            unsigned i = (unsigned)idx;
+
+            if (!string_is_empty(audio_mixer_streams[i].name))
+               free(audio_mixer_streams[i].name);
+
+            if (i < AUDIO_MIXER_MAX_STREAMS)
+               audio_mixer_streams[i].stream_type = AUDIO_STREAM_TYPE_USER;
+            else
+               audio_mixer_streams[i].stream_type = AUDIO_STREAM_TYPE_SYSTEM;
+
+            audio_mixer_streams[i].name    = NULL;
+            audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_NONE;
+            audio_mixer_streams[i].volume  = 0.0f;
+            audio_mixer_streams[i].buf     = NULL;
+            audio_mixer_streams[i].stop_cb = NULL;
+            audio_mixer_streams[i].handle  = NULL;
+            audio_mixer_streams[i].voice   = NULL;
+
+            i++;
+
+            for (; i < AUDIO_MIXER_MAX_SYSTEM_STREAMS; i++)
+            {
+               if (audio_mixer_streams[i].state == AUDIO_STREAM_STATE_STOPPED)
+               {
+                  audio_driver_mixer_play_stream_sequential(i);
+                  break;
+               }
+            }
+         }
+         break;
+      case AUDIO_MIXER_SOUND_STOPPED:
+         break;
+      case AUDIO_MIXER_SOUND_REPEATED:
+         break;
+   }
+}
+
+static bool audio_driver_mixer_get_free_stream_slot(unsigned *id, enum audio_mixer_stream_type type)
+{
+   unsigned i     = (type == AUDIO_STREAM_TYPE_USER) ? 0                       : AUDIO_MIXER_MAX_STREAMS;
+   unsigned count = (type == AUDIO_STREAM_TYPE_USER) ? AUDIO_MIXER_MAX_STREAMS : AUDIO_MIXER_MAX_SYSTEM_STREAMS;
+   for (; i < count; i++)
+   {
+      if (audio_mixer_streams[i].state == AUDIO_STREAM_STATE_NONE)
+      {
+         *id = i;
+         return true;
+      }
+   }
+
+   return false;
+}
+
+bool audio_driver_mixer_add_stream(audio_mixer_stream_params_t *params)
+{
+   unsigned free_slot            = 0;
+   audio_mixer_voice_t *voice    = NULL;
+   audio_mixer_sound_t *handle   = NULL;
+   audio_mixer_stop_cb_t stop_cb = audio_mixer_play_stop_cb;
+   bool looped                   = false;
+   void *buf                     = NULL;
+
+   if (params->stream_type == AUDIO_STREAM_TYPE_NONE)
+      return false;
+
+   switch (params->slot_selection_type)
+   {
+      case AUDIO_MIXER_SLOT_SELECTION_MANUAL:
+         free_slot = params->slot_selection_idx;
+         break;
+      case AUDIO_MIXER_SLOT_SELECTION_AUTOMATIC:
+      default:
+         if (!audio_driver_mixer_get_free_stream_slot(
+                  &free_slot, params->stream_type))
+            return false;
+         break;
+   }
+
+   if (params->state == AUDIO_STREAM_STATE_NONE)
+      return false;
+
+   buf = malloc(params->bufsize);
+
+   if (!buf)
+      return false;
+
+   memcpy(buf, params->buf, params->bufsize);
+
+   switch (params->type)
+   {
+      case AUDIO_MIXER_TYPE_WAV:
+         handle = audio_mixer_load_wav(buf, (int32_t)params->bufsize);
+         break;
+      case AUDIO_MIXER_TYPE_OGG:
+         handle = audio_mixer_load_ogg(buf, (int32_t)params->bufsize);
+         break;
+      case AUDIO_MIXER_TYPE_MOD:
+         handle = audio_mixer_load_mod(buf, (int32_t)params->bufsize);
+         break;
+      case AUDIO_MIXER_TYPE_FLAC:
+#ifdef HAVE_DR_FLAC
+         handle = audio_mixer_load_flac(buf, (int32_t)params->bufsize);
+#endif
+         break;
+      case AUDIO_MIXER_TYPE_MP3:
+#ifdef HAVE_DR_MP3
+         handle = audio_mixer_load_mp3(buf, (int32_t)params->bufsize);
+#endif
+         break;
+      case AUDIO_MIXER_TYPE_NONE:
+         break;
+   }
+
+   if (!handle)
+   {
+      free(buf);
+      return false;
+   }
+
+   switch (params->state)
+   {
+      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
+         looped = true;
+         voice = audio_mixer_play(handle, looped, params->volume, stop_cb);
+         break;
+      case AUDIO_STREAM_STATE_PLAYING:
+         voice = audio_mixer_play(handle, looped, params->volume, stop_cb);
+         break;
+      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
+         stop_cb = audio_mixer_play_stop_sequential_cb;
+         voice = audio_mixer_play(handle, looped, params->volume, stop_cb);
+         break;
+      default:
+         break;
+   }
+
+   audio_mixer_active                     = true;
+
+   audio_mixer_streams[free_slot].name    = !string_is_empty(params->basename) ? strdup(params->basename) : NULL;
+   audio_mixer_streams[free_slot].buf     = buf;
+   audio_mixer_streams[free_slot].handle  = handle;
+   audio_mixer_streams[free_slot].voice   = voice;
+   audio_mixer_streams[free_slot].stream_type = params->stream_type;
+   audio_mixer_streams[free_slot].type    = params->type;
+   audio_mixer_streams[free_slot].state   = params->state;
+   audio_mixer_streams[free_slot].volume  = params->volume;
+   audio_mixer_streams[free_slot].stop_cb = stop_cb;
+
+   return true;
+}
+
+enum audio_mixer_state audio_driver_mixer_get_stream_state(unsigned i)
+{
+   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
+      return AUDIO_STREAM_STATE_NONE;
+
+   return audio_mixer_streams[i].state;
+}
+
+static void audio_driver_mixer_play_stream_internal(unsigned i, unsigned type)
+{
+   bool set_state              = false;
+
+   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
+      return;
+
+   switch (audio_mixer_streams[i].state)
+   {
+      case AUDIO_STREAM_STATE_STOPPED:
+         audio_mixer_streams[i].voice = audio_mixer_play(audio_mixer_streams[i].handle,
+               (type == AUDIO_STREAM_STATE_PLAYING_LOOPED) ? true : false,
+               1.0f, audio_mixer_streams[i].stop_cb);
+         set_state = true;
+         break;
+      case AUDIO_STREAM_STATE_PLAYING:
+      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
+      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
+      case AUDIO_STREAM_STATE_NONE:
+         break;
+   }
+
+   if (set_state)
+      audio_mixer_streams[i].state   = (enum audio_mixer_state)type;
+}
+
+static void audio_driver_load_menu_bgm_callback(retro_task_t *task,
+      void *task_data, void *user_data, const char *error)
+{
+   bool contentless = false;
+   bool is_inited = false;
+
+   content_get_status(&contentless, &is_inited);
+
+   if (!is_inited)
+      audio_driver_mixer_play_menu_sound_looped(AUDIO_MIXER_SYSTEM_SLOT_BGM);
+}
+
+void audio_driver_load_menu_sounds(void)
+{
+   settings_t *settings = config_get_ptr();
+   char *sounds_path = NULL;
+   char *sounds_fallback_path = NULL;
+   const char *path_ok = NULL;
+   const char *path_cancel = NULL;
+   const char *path_notice = NULL;
+   const char *path_bgm = NULL;
+   struct string_list *list = NULL;
+   struct string_list *list_fallback = NULL;
+   unsigned i = 0;
+
+   sounds_path = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
+   sounds_fallback_path = (char*)malloc(PATH_MAX_LENGTH * sizeof(char));
+   sounds_path[0] = sounds_fallback_path[0] = '\0';
+
+   fill_pathname_join(
+         sounds_fallback_path,
+         settings->paths.directory_assets,
+         "sounds",
+         PATH_MAX_LENGTH * sizeof(char)
+   );
+
+   fill_pathname_application_special(sounds_path, PATH_MAX_LENGTH * sizeof(char), APPLICATION_SPECIAL_DIRECTORY_ASSETS_SOUNDS);
+
+   list = dir_list_new(sounds_path, MENU_SOUND_FORMATS, false, false, false, false);
+   list_fallback = dir_list_new(sounds_fallback_path, MENU_SOUND_FORMATS, false, false, false, false);
+
+   if (!list)
+   {
+      list = list_fallback;
+      list_fallback = NULL;
+   }
+
+   if (!list || list->size == 0)
+      goto end;
+
+   if (list_fallback && list_fallback->size > 0)
+   {
+      for (i = 0; i < list_fallback->size; i++)
+      {
+         if (list->size == 0 || !string_list_find_elem(list, list_fallback->elems[i].data))
+         {
+            union string_list_elem_attr attr = {0};
+            string_list_append(list, list_fallback->elems[i].data, attr);
+         }
+      }
+   }
+
+   for (i = 0; i < list->size; i++)
+   {
+      const char *path = list->elems[i].data;
+      const char *ext = path_get_extension(path);
+      char basename_noext[PATH_MAX_LENGTH];
+
+      basename_noext[0] = '\0';
+
+      fill_pathname_base_noext(basename_noext, path, sizeof(basename_noext));
+
+      if (audio_driver_mixer_extension_supported(ext))
+      {
+         if (string_is_equal_noncase(basename_noext, "ok"))
+            path_ok = path;
+         if (string_is_equal_noncase(basename_noext, "cancel"))
+            path_cancel = path;
+         if (string_is_equal_noncase(basename_noext, "notice"))
+            path_notice = path;
+         if (string_is_equal_noncase(basename_noext, "bgm"))
+            path_bgm = path;
+      }
+   }
+
+   if (path_ok && settings->bools.audio_enable_menu_ok)
+      task_push_audio_mixer_load(path_ok, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_OK);
+   if (path_cancel && settings->bools.audio_enable_menu_cancel)
+      task_push_audio_mixer_load(path_cancel, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_CANCEL);
+   if (path_notice && settings->bools.audio_enable_menu_notice)
+      task_push_audio_mixer_load(path_notice, NULL, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_NOTICE);
+   if (path_bgm && settings->bools.audio_enable_menu_bgm)
+      task_push_audio_mixer_load(path_bgm, audio_driver_load_menu_bgm_callback, NULL, true, AUDIO_MIXER_SLOT_SELECTION_MANUAL, AUDIO_MIXER_SYSTEM_SLOT_BGM);
+
+end:
+   if (list)
+      string_list_free(list);
+   if (list_fallback)
+      string_list_free(list_fallback);
+   if (sounds_path)
+      free(sounds_path);
+   if (sounds_fallback_path)
+      free(sounds_fallback_path);
+}
+
+void audio_driver_mixer_play_stream(unsigned i)
+{
+   audio_mixer_streams[i].stop_cb = audio_mixer_play_stop_cb;
+   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING);
+}
+
+void audio_driver_mixer_play_menu_sound_looped(unsigned i)
+{
+   audio_mixer_streams[i].stop_cb = audio_mixer_menu_stop_cb;
+   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_LOOPED);
+}
+
+void audio_driver_mixer_play_menu_sound(unsigned i)
+{
+   audio_mixer_streams[i].stop_cb = audio_mixer_menu_stop_cb;
+   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING);
+}
+
+void audio_driver_mixer_play_stream_looped(unsigned i)
+{
+   audio_mixer_streams[i].stop_cb = audio_mixer_play_stop_cb;
+   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_LOOPED);
+}
+
+void audio_driver_mixer_play_stream_sequential(unsigned i)
+{
+   audio_mixer_streams[i].stop_cb = audio_mixer_play_stop_sequential_cb;
+   audio_driver_mixer_play_stream_internal(i, AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL);
+}
+
+float audio_driver_mixer_get_stream_volume(unsigned i)
+{
+   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
+      return 0.0f;
+
+   return audio_mixer_streams[i].volume;
+}
+
+void audio_driver_mixer_set_stream_volume(unsigned i, float vol)
+{
+   audio_mixer_voice_t *voice     = NULL;
+
+   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
+      return;
+
+   audio_mixer_streams[i].volume  = vol;
+
+   voice                          = audio_mixer_streams[i].voice;
+
+   if (voice)
+      audio_mixer_voice_set_volume(voice, db_to_gain(vol));
+}
+
+void audio_driver_mixer_stop_stream(unsigned i)
+{
+   bool set_state              = false;
+
+   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
+      return;
+
+   switch (audio_mixer_streams[i].state)
+   {
+      case AUDIO_STREAM_STATE_PLAYING:
+      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
+      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
+         set_state = true;
+         break;
+      case AUDIO_STREAM_STATE_STOPPED:
+      case AUDIO_STREAM_STATE_NONE:
+         break;
+   }
+
+   if (set_state)
+   {
+      audio_mixer_voice_t *voice     = audio_mixer_streams[i].voice;
+
+      if (voice)
+         audio_mixer_stop(voice);
+      audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_STOPPED;
+      audio_mixer_streams[i].volume  = 1.0f;
+   }
+}
+
+void audio_driver_mixer_remove_stream(unsigned i)
+{
+   bool destroy                = false;
+
+   if (i >= AUDIO_MIXER_MAX_SYSTEM_STREAMS)
+      return;
+
+   switch (audio_mixer_streams[i].state)
+   {
+      case AUDIO_STREAM_STATE_PLAYING:
+      case AUDIO_STREAM_STATE_PLAYING_LOOPED:
+      case AUDIO_STREAM_STATE_PLAYING_SEQUENTIAL:
+         audio_driver_mixer_stop_stream(i);
+         destroy = true;
+         break;
+      case AUDIO_STREAM_STATE_STOPPED:
+         destroy = true;
+         break;
+      case AUDIO_STREAM_STATE_NONE:
+         break;
+   }
+
+   if (destroy)
+   {
+      audio_mixer_sound_t *handle = audio_mixer_streams[i].handle;
+      if (handle)
+         audio_mixer_destroy(handle);
+
+      if (!string_is_empty(audio_mixer_streams[i].name))
+         free(audio_mixer_streams[i].name);
+
+      audio_mixer_streams[i].state   = AUDIO_STREAM_STATE_NONE;
+      audio_mixer_streams[i].stop_cb = NULL;
+      audio_mixer_streams[i].volume  = 0.0f;
+      audio_mixer_streams[i].handle  = NULL;
+      audio_mixer_streams[i].voice   = NULL;
+      audio_mixer_streams[i].name    = NULL;
+   }
+}
+
+bool audio_driver_set_callback(const void *data)
+{
+   const struct retro_audio_callback *cb = (const struct retro_audio_callback*)data;
+
+   if (cb)
+      audio_callback = *cb;
+
+   return true;
+}
+
+bool audio_driver_enable_callback(void)
+{
+   if (!audio_callback.callback)
+      return false;
+   if (audio_callback.set_state)
+      audio_callback.set_state(true);
+   return true;
+}
+
+bool audio_driver_disable_callback(void)
+{
+   if (!audio_callback.callback)
+      return false;
+
+   if (audio_callback.set_state)
+      audio_callback.set_state(false);
+   return true;
+}
+
+/* Sets audio monitor rate to new value. */
+static void audio_driver_monitor_set_rate(void)
+{
+   settings_t *settings = config_get_ptr();
+   double new_src_ratio = (double)settings->uints.audio_out_rate /
+      audio_driver_input;
+
+   audio_source_ratio_original = new_src_ratio;
+   audio_source_ratio_current  = new_src_ratio;
+}
+
+bool audio_driver_callback(void)
+{
+   if (!audio_callback.callback)
+      return false;
+
+   if (audio_callback.callback)
+      audio_callback.callback();
+
+   return true;
+}
+
+bool audio_driver_has_callback(void)
+{
+   if (audio_callback.callback)
+	   return true;
+   return false;
+}
+
+bool audio_driver_toggle_mute(void)
+{
+   audio_driver_mute_enable  = !audio_driver_mute_enable;
+   return true;
+}
+
+bool audio_driver_mixer_toggle_mute(void)
+{
+   audio_driver_mixer_mute_enable  = !audio_driver_mixer_mute_enable;
+   return true;
+}
+
+static INLINE bool audio_driver_alive(void)
+{
+   if (     current_audio
+         && current_audio->alive
+         && audio_driver_context_audio_data)
+      return current_audio->alive(audio_driver_context_audio_data);
+   return false;
+}
+
+bool audio_driver_start(bool is_shutdown)
+{
+   if (!current_audio || !current_audio->start
+         || !audio_driver_context_audio_data)
+      goto error;
+   if (!current_audio->start(audio_driver_context_audio_data, is_shutdown))
+      goto error;
+
+   return true;
+
+error:
+   RARCH_ERR("%s\n",
+         msg_hash_to_str(MSG_FAILED_TO_START_AUDIO_DRIVER));
+   audio_driver_active = false;
+   return false;
+}
+
+bool audio_driver_stop(void)
+{
+   if (!current_audio || !current_audio->stop
+         || !audio_driver_context_audio_data)
+      return false;
+   if (!audio_driver_alive())
+      return false;
+   return current_audio->stop(audio_driver_context_audio_data);
+}
+
+static void audio_driver_unset_callback(void)
+{
+   audio_callback.callback  = NULL;
+   audio_callback.set_state = NULL;
+}
+
+void audio_driver_frame_is_reverse(void)
+{
+   /* We just rewound. Flush rewind audio buffer. */
+   if (recording_data)
+      recording_push_audio(
+            audio_driver_rewind_buf + audio_driver_rewind_ptr,
+            audio_driver_rewind_size - audio_driver_rewind_ptr);
+
+   if (!(
+         runloop_paused           ||
+         !audio_driver_active     ||
+         !audio_driver_input_data ||
+         !audio_driver_output_samples_buf))
+      audio_driver_flush(
+            audio_driver_rewind_buf + audio_driver_rewind_ptr,
+            audio_driver_rewind_size - audio_driver_rewind_ptr,
+            runloop_slowmotion);
+}
+
+static void audio_driver_destroy_data(void)
+{
+   audio_driver_context_audio_data = NULL;
+}
+
+void audio_driver_suspend(void)
+{
+   audio_suspended = true;
+}
+
+bool audio_driver_is_suspended(void)
+{
+   return audio_suspended;
+}
+
+void audio_driver_resume(void)
+{
+   audio_suspended = false;
+}
+
+void audio_driver_set_active(void)
+{
+   audio_driver_active = true;
+}
+
+bool audio_driver_is_active(void)
+{
+   return audio_driver_active;
+}
+
+static void audio_driver_destroy(void)
+{
+   audio_driver_active   = false;
+   current_audio         = NULL;
+}
+
+void audio_set_bool(enum audio_action action, bool val)
+{
+   switch (action)
+   {
+      case AUDIO_ACTION_MIXER:
+         audio_mixer_active = val;
+         break;
+      case AUDIO_ACTION_NONE:
+      default:
+         break;
+   }
+}
+
+void audio_set_float(enum audio_action action, float val)
+{
+   switch (action)
+   {
+      case AUDIO_ACTION_VOLUME_GAIN:
+         audio_driver_volume_gain        = db_to_gain(val);
+         break;
+      case AUDIO_ACTION_MIXER_VOLUME_GAIN:
+         audio_driver_mixer_volume_gain  = db_to_gain(val);
+         break;
+      case AUDIO_ACTION_RATE_CONTROL_DELTA:
+         audio_driver_rate_control_delta = val;
+         break;
+      case AUDIO_ACTION_NONE:
+      default:
+         break;
+   }
+}
+
+float *audio_get_float_ptr(enum audio_action action)
+{
+   switch (action)
+   {
+      case AUDIO_ACTION_RATE_CONTROL_DELTA:
+         return &audio_driver_rate_control_delta;
+      case AUDIO_ACTION_NONE:
+      default:
+         break;
+   }
+
+   return NULL;
+}
+
+bool *audio_get_bool_ptr(enum audio_action action)
+{
+   switch (action)
+   {
+      case AUDIO_ACTION_MIXER_MUTE_ENABLE:
+         return &audio_driver_mixer_mute_enable;
+      case AUDIO_ACTION_MUTE_ENABLE:
+         return &audio_driver_mute_enable;
+      case AUDIO_ACTION_NONE:
+      default:
+         break;
+   }
+
+   return NULL;
+}
+
+static const char* audio_driver_get_ident(void)
+{
+   if (!current_audio)
+      return NULL;
+
+   return current_audio->ident;
+}
+
 /* BSV Movie */
 
 struct bsv_state
@@ -1406,6 +3182,19 @@ static bool driver_update_system_av_info(const struct retro_system_av_info *info
    return true;
 }
 
+bool audio_driver_new_devices_list(void)
+{
+   if (!current_audio || !current_audio->device_list_new
+         || !audio_driver_context_audio_data)
+      return false;
+   audio_driver_devices_list = (struct string_list*)
+      current_audio->device_list_new(audio_driver_context_audio_data);
+   if (!audio_driver_devices_list)
+      return false;
+   return true;
+}
+
+
 /**
  * drivers_init:
  * @flags              : Bitmask of drivers to initialize.
@@ -1446,7 +3235,7 @@ void drivers_init(int flags)
    /* Initialize audio driver */
    if (flags & DRIVER_AUDIO_MASK)
    {
-      audio_driver_init();
+      audio_driver_init_internal(audio_callback.callback != NULL);
       audio_driver_new_devices_list();
    }
 
diff --git a/retroarch.h b/retroarch.h
index 7e8521c1e3..fed19aec63 100644
--- a/retroarch.h
+++ b/retroarch.h
@@ -26,6 +26,9 @@
 
 #include <queues/task_queue.h>
 #include <queues/message_queue.h>
+#include <audio/audio_mixer.h>
+
+#include "audio/audio_defines.h"
 
 #include "core_type.h"
 #include "core.h"
@@ -445,6 +448,265 @@ void rarch_log_file_deinit(void);
 
 enum retro_language rarch_get_language_from_iso(const char *lang);
 
+/* Audio */
+
+typedef struct audio_mixer_stream
+{
+   audio_mixer_sound_t *handle;
+   audio_mixer_voice_t *voice;
+   audio_mixer_stop_cb_t stop_cb;
+   enum audio_mixer_stream_type  stream_type;
+   enum audio_mixer_type type;
+   enum audio_mixer_state state;
+   float volume;
+   void *buf;
+   char *name;
+   size_t bufsize;
+} audio_mixer_stream_t;
+
+typedef struct audio_mixer_stream_params
+{
+   float volume;
+   enum audio_mixer_slot_selection_type slot_selection_type;
+   unsigned slot_selection_idx;
+   enum audio_mixer_stream_type  stream_type;
+   enum audio_mixer_type  type;
+   enum audio_mixer_state state;
+   void *buf;
+   char *basename;
+   size_t bufsize;
+   audio_mixer_stop_cb_t cb;
+} audio_mixer_stream_params_t;
+
+typedef struct audio_driver
+{
+   /* Creates and initializes handle to audio driver.
+    *
+    * Returns: audio driver handle on success, otherwise NULL.
+    **/
+   void *(*init)(const char *device, unsigned rate,
+         unsigned latency, unsigned block_frames, unsigned *new_rate);
+
+   /*
+    * @data         : Pointer to audio data handle.
+    * @buf          : Audio buffer data.
+    * @size         : Size of audio buffer.
+    *
+    * Write samples to audio driver.
+    *
+    * Write data in buffer to audio driver.
+    * A frame here is defined as one combined sample of left and right
+    * channels. (I.e. 44.1kHz, 16-bit stereo has 88.2k samples/s, and
+    * 44.1k frames/s.)
+    *
+    * Samples are interleaved in format LRLRLRLRLR ...
+    * If the driver returns true in use_float(), a floating point
+    * format will be used, with range [-1.0, 1.0].
+    * If not, signed 16-bit samples in native byte ordering will be used.
+    *
+    * This function returns the number of frames successfully written.
+    * If an error occurs, -1 should be returned.
+    * Note that non-blocking behavior that cannot write at this time
+    * should return 0 as returning -1 will terminate the driver.
+    *
+    * Unless said otherwise with set_nonblock_state(), all writes
+    * are blocking, and it should block till it has written all frames.
+    */
+   ssize_t (*write)(void *data, const void *buf, size_t size);
+
+   /* Temporarily pauses the audio driver. */
+   bool (*stop)(void *data);
+
+   /* Resumes audio driver from the paused state. */
+   bool (*start)(void *data, bool is_shutdown);
+
+   /* Is the audio driver currently running? */
+   bool (*alive)(void *data);
+
+   /* Should we care about blocking in audio thread? Fast forwarding.
+    *
+    * If state is true, nonblocking operation is assumed.
+    * This is typically used for fast-forwarding. If driver cannot
+    * implement nonblocking writes, this can be disregarded, but should
+    * log a message to stderr.
+    * */
+   void (*set_nonblock_state)(void *data, bool toggle);
+
+   /* Stops and frees driver data. */
+   void (*free)(void *data);
+
+   /* Defines if driver will take standard floating point samples,
+    * or int16_t samples.
+    *
+    * If true is returned, the audio driver is capable of using
+    * floating point data. This will likely increase performance as the
+    * resampler unit uses floating point. The sample range is
+    * [-1.0, 1.0].
+    * */
+   bool (*use_float)(void *data);
+
+   /* Human-readable identifier. */
+   const char *ident;
+
+   /* Optional. Get audio device list (allocates, caller has to free this) */
+   void *(*device_list_new)(void *data);
+
+   /* Optional. Frees audio device list */
+   void (*device_list_free)(void *data, void *data2);
+
+   /* Optional. */
+   size_t (*write_avail)(void *data);
+
+   size_t (*buffer_size)(void *data);
+} audio_driver_t;
+
+void audio_driver_suspend(void);
+
+bool audio_driver_is_suspended(void);
+
+void audio_driver_resume(void);
+
+void audio_driver_set_active(void);
+
+bool audio_driver_is_active(void);
+
+bool audio_driver_enable_callback(void);
+
+bool audio_driver_disable_callback(void);
+
+/**
+ * audio_driver_find_handle:
+ * @index              : index of driver to get handle to.
+ *
+ * Returns: handle to audio driver at index. Can be NULL
+ * if nothing found.
+ **/
+const void *audio_driver_find_handle(int index);
+
+/**
+ * audio_driver_find_ident:
+ * @index              : index of driver to get handle to.
+ *
+ * Returns: Human-readable identifier of audio driver at index. Can be NULL
+ * if nothing found.
+ **/
+const char *audio_driver_find_ident(int index);
+
+void audio_driver_set_nonblocking_state(bool enable);
+
+/**
+ * config_get_audio_driver_options:
+ *
+ * Get an enumerated list of all audio driver names, separated by '|'.
+ *
+ * Returns: string listing of all audio driver names, separated by '|'.
+ **/
+const char* config_get_audio_driver_options(void);
+
+void audio_driver_sample(int16_t left, int16_t right);
+
+size_t audio_driver_sample_batch(const int16_t *data, size_t frames);
+
+void audio_driver_sample_rewind(int16_t left, int16_t right);
+
+size_t audio_driver_sample_batch_rewind(const int16_t *data, size_t frames);
+
+bool audio_driver_mixer_extension_supported(const char *ext);
+
+void audio_driver_dsp_filter_free(void);
+
+void audio_driver_dsp_filter_init(const char *device);
+
+void audio_driver_set_buffer_size(size_t bufsize);
+
+bool audio_driver_get_devices_list(void **ptr);
+
+void audio_driver_setup_rewind(void);
+
+bool audio_driver_set_callback(const void *data);
+
+bool audio_driver_callback(void);
+
+bool audio_driver_has_callback(void);
+
+bool audio_driver_toggle_mute(void);
+
+bool audio_driver_start(bool is_shutdown);
+
+bool audio_driver_stop(void);
+
+void audio_driver_frame_is_reverse(void);
+
+void audio_set_float(enum audio_action action, float val);
+
+void audio_set_bool(enum audio_action action, bool val);
+
+void audio_unset_bool(enum audio_action action, bool val);
+
+float *audio_get_float_ptr(enum audio_action action);
+
+bool *audio_get_bool_ptr(enum audio_action action);
+
+audio_mixer_stream_t *audio_driver_mixer_get_stream(unsigned i);
+
+bool audio_driver_mixer_add_stream(audio_mixer_stream_params_t *params);
+
+void audio_driver_mixer_play_stream(unsigned i);
+
+void audio_driver_mixer_play_menu_sound(unsigned i);
+
+void audio_driver_mixer_play_menu_sound_looped(unsigned i);
+
+void audio_driver_mixer_play_stream_sequential(unsigned i);
+
+void audio_driver_mixer_play_stream_looped(unsigned i);
+
+void audio_driver_mixer_stop_stream(unsigned i);
+
+float audio_driver_mixer_get_stream_volume(unsigned i);
+
+void audio_driver_mixer_set_stream_volume(unsigned i, float vol);
+
+void audio_driver_mixer_remove_stream(unsigned i);
+
+enum audio_mixer_state audio_driver_mixer_get_stream_state(unsigned i);
+
+const char *audio_driver_mixer_get_stream_name(unsigned i);
+
+bool compute_audio_buffer_statistics(audio_statistics_t *stats);
+
+void audio_driver_load_menu_sounds(void);
+
+extern audio_driver_t audio_rsound;
+extern audio_driver_t audio_audioio;
+extern audio_driver_t audio_oss;
+extern audio_driver_t audio_alsa;
+extern audio_driver_t audio_alsathread;
+extern audio_driver_t audio_tinyalsa;
+extern audio_driver_t audio_roar;
+extern audio_driver_t audio_openal;
+extern audio_driver_t audio_opensl;
+extern audio_driver_t audio_jack;
+extern audio_driver_t audio_sdl;
+extern audio_driver_t audio_xa;
+extern audio_driver_t audio_pulse;
+extern audio_driver_t audio_dsound;
+extern audio_driver_t audio_wasapi;
+extern audio_driver_t audio_coreaudio;
+extern audio_driver_t audio_coreaudio3;
+extern audio_driver_t audio_xenon360;
+extern audio_driver_t audio_ps3;
+extern audio_driver_t audio_gx;
+extern audio_driver_t audio_ax;
+extern audio_driver_t audio_psp;
+extern audio_driver_t audio_ps2;
+extern audio_driver_t audio_ctr_csnd;
+extern audio_driver_t audio_ctr_dsp;
+extern audio_driver_t audio_switch;
+extern audio_driver_t audio_switch_thread;
+extern audio_driver_t audio_rwebaudio;
+extern audio_driver_t audio_null;
+
 /* BSV Movie */
 
 enum rarch_movie_type
diff --git a/runahead/run_ahead.c b/runahead/run_ahead.c
index cdb1d3d2e8..1881935710 100644
--- a/runahead/run_ahead.c
+++ b/runahead/run_ahead.c
@@ -11,7 +11,6 @@
 
 #include "../core.h"
 #include "../dynamic.h"
-#include "../audio/audio_driver.h"
 #include "../gfx/video_driver.h"
 #include "../configuration.h"
 #include "../retroarch.h"
diff --git a/tasks/task_audio_mixer.c b/tasks/task_audio_mixer.c
index bd0096501d..28b00e3c1a 100644
--- a/tasks/task_audio_mixer.c
+++ b/tasks/task_audio_mixer.c
@@ -28,9 +28,8 @@
 #include <retro_miscellaneous.h>
 #include <queues/task_queue.h>
 
-#include "../audio/audio_driver.h"
-
 #include "../file_path_special.h"
+#include "../retroarch.h"
 #include "../verbosity.h"
 
 #include "task_file_transfer.h"
diff --git a/tasks/task_audio_mixer.h b/tasks/task_audio_mixer.h
index 62e442e125..9f27c81384 100644
--- a/tasks/task_audio_mixer.h
+++ b/tasks/task_audio_mixer.h
@@ -28,7 +28,7 @@
 #include "../config.h"
 #endif
 
-#include "../audio/audio_driver.h"
+#include "../retroarch.h"
 
 RETRO_BEGIN_DECLS