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byuu says: Changelog: - gba,ws: removed Thread::step() override¹ - processor/m68k: move.b (a7)+ and move.b (a7)- adjust a7 by two, not by one² - tomoko: created new initialize(Video,Audio,Input)Driver() functions³ - ruby/audio: split Audio::information into Audio::available(Devices,Frequencies,Latencies,Channels)³ - ws: added Model::(WonderSwan,WonderSwanColor,SwanCrystal)() functions for consistency with other cores ¹: this should hopefully fix GBA Pokemon Pinball. Thanks to SuperMikeMan for pointing out the underlying cause. ²: this fixes A Ressaha de Ikou, Mega Bomberman, and probably more games. ³: this is the big change: so there was a problem with WASAPI where you might change your device under the audio settings panel. And your new device may not support the frequency that your old device used. This would end up not updating the frequency, and the pitch would be distorted. The old Audio::information() couldn't tell you what frequencies, latencies, or channels were available for all devices simultaneously, so I had to split them up. The new initializeAudioDriver() function validates you have a correct driver, or it defaults to none. Then it validates a correct device name, or it defaults to the first entry in the list. Then it validates a correct frequency, or defaults to the first in the list. Then finally it validates a correct latency, or defaults to the first in the list. In this way ... we have a clear path now with no API changes required to select default devices, frequencies, latencies, channel counts: they need to be the first items in their respective lists. So, what we need to do now is go through and for every audio driver that enumerates devices, we need to make sure the default device gets added to the top of the list. I'm ... not really sure how to do this with most drivers, so this is definitely going to take some time. Also, when you change a device, initializeAudioDriver() is called again, so if it's a bad device, it will disable the audio driver instead of continuing to send samples at it and hoping that the driver blocked those API calls when it failed to initialize properly. Now then ... since it was a decently-sized API change, it's possible I've broken compilation of the Linux drivers, so please report any compilation errors so that I can fix them.
178 lines
5.3 KiB
C++
178 lines
5.3 KiB
C++
#include <dsound.h>
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struct AudioDirectSound : Audio {
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AudioDirectSound() { initialize(); }
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~AudioDirectSound() { terminate(); }
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auto availableDevices() -> string_vector {
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return {"Default"};
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}
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auto availableFrequencies() -> vector<double> {
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return {44100.0, 48000.0, 96000.0};
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}
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auto availableLatencies() -> vector<uint> {
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return {40, 60, 80, 100};
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}
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auto availableChannels() -> vector<uint> {
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return {2};
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}
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auto ready() -> bool { return _ready; }
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auto blocking() -> bool { return _blocking; }
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auto channels() -> uint { return _channels; }
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auto frequency() -> double { return _frequency; }
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auto latency() -> uint { return _latency; }
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auto setBlocking(bool blocking) -> bool {
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if(_blocking == blocking) return true;
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_blocking = blocking;
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return true;
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}
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auto setFrequency(double frequency) -> bool {
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if(_frequency == frequency) return true;
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_frequency = frequency;
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return initialize();
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}
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auto setLatency(uint latency) -> bool {
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if(_latency == latency) return true;
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_latency = latency;
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return initialize();
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}
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auto clear() -> void {
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if(!ready()) return;
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_ringRead = 0;
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_ringWrite = _rings - 1;
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_ringDistance = _rings - 1;
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if(_buffer) memory::fill(_buffer, _period * _rings * 4);
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_offset = 0;
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if(!_secondary) return;
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_secondary->Stop();
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_secondary->SetCurrentPosition(0);
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void* output;
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DWORD size;
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_secondary->Lock(0, _period * _rings * 4, &output, &size, 0, 0, 0);
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memory::fill(output, size);
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_secondary->Unlock(output, size, 0, 0);
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_secondary->Play(0, 0, DSBPLAY_LOOPING);
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}
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auto output(const double samples[]) -> void {
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if(!ready()) return;
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_buffer[_offset++] = uint16_t(samples[0] * 32768.0) << 0 | uint16_t(samples[1] * 32768.0) << 16;
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if(_offset < _period) return;
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_offset = 0;
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if(_blocking) {
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//wait until playback buffer has an empty ring to write new audio data to
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while(_ringDistance >= _rings - 1) {
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DWORD position;
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_secondary->GetCurrentPosition(&position, 0);
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uint ringActive = position / (_period * 4);
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if(ringActive == _ringRead) continue;
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//subtract number of played rings from ring distance counter
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_ringDistance -= (_rings + ringActive - _ringRead) % _rings;
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_ringRead = ringActive;
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if(_ringDistance < 2) {
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//buffer underflow; set max distance to recover quickly
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_ringDistance = _rings - 1;
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_ringWrite = (_rings + _ringRead - 1) % _rings;
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break;
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}
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}
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}
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_ringWrite = (_ringWrite + 1) % _rings;
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_ringDistance = (_ringDistance + 1) % _rings;
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void* output;
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DWORD size;
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if(_secondary->Lock(_ringWrite * _period * 4, _period * 4, &output, &size, 0, 0, 0) == DS_OK) {
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memory::copy(output, _buffer, _period * 4);
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_secondary->Unlock(output, size, 0, 0);
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}
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}
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private:
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auto initialize() -> bool {
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terminate();
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_rings = 8;
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_period = _frequency * _latency / _rings / 1000.0 + 0.5;
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_buffer = new uint32_t[_period * _rings];
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_offset = 0;
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if(DirectSoundCreate(0, &_interface, 0) != DS_OK) return terminate(), false;
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_interface->SetCooperativeLevel(GetDesktopWindow(), DSSCL_PRIORITY);
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DSBUFFERDESC primaryDescription = {};
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primaryDescription.dwSize = sizeof(DSBUFFERDESC);
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primaryDescription.dwFlags = DSBCAPS_PRIMARYBUFFER;
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primaryDescription.dwBufferBytes = 0;
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primaryDescription.lpwfxFormat = 0;
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_interface->CreateSoundBuffer(&primaryDescription, &_primary, 0);
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WAVEFORMATEX waveFormat = {};
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waveFormat.wFormatTag = WAVE_FORMAT_PCM;
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waveFormat.nChannels = _channels;
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waveFormat.nSamplesPerSec = (uint)_frequency;
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waveFormat.wBitsPerSample = 16;
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waveFormat.nBlockAlign = waveFormat.nChannels * waveFormat.wBitsPerSample / 8;
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waveFormat.nAvgBytesPerSec = waveFormat.nSamplesPerSec * waveFormat.nBlockAlign;
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_primary->SetFormat(&waveFormat);
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DSBUFFERDESC secondaryDescription = {};
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secondaryDescription.dwSize = sizeof(DSBUFFERDESC);
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secondaryDescription.dwFlags = DSBCAPS_GETCURRENTPOSITION2 | DSBCAPS_CTRLFREQUENCY | DSBCAPS_GLOBALFOCUS | DSBCAPS_LOCSOFTWARE;
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secondaryDescription.dwBufferBytes = _period * _rings * 4;
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secondaryDescription.guid3DAlgorithm = GUID_NULL;
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secondaryDescription.lpwfxFormat = &waveFormat;
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_interface->CreateSoundBuffer(&secondaryDescription, &_secondary, 0);
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_secondary->SetFrequency((uint)_frequency);
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_secondary->SetCurrentPosition(0);
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_ready = true;
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clear();
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return true;
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}
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auto terminate() -> void {
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_ready = false;
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if(_buffer) { delete[] _buffer; _buffer = nullptr; }
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if(_secondary) { _secondary->Stop(); _secondary->Release(); _secondary = nullptr; }
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if(_primary) { _primary->Stop(); _primary->Release(); _primary = nullptr; }
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if(_interface) { _interface->Release(); _interface = nullptr; }
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}
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bool _ready = false;
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bool _blocking = true;
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uint _channels = 2;
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double _frequency = 48000.0;
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uint _latency = 40;
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LPDIRECTSOUND _interface = nullptr;
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LPDIRECTSOUNDBUFFER _primary = nullptr;
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LPDIRECTSOUNDBUFFER _secondary = nullptr;
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uint32_t* _buffer = nullptr;
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uint _offset = 0;
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uint _period = 0;
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uint _rings = 0;
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uint _ringRead = 0;
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uint _ringWrite = 0;
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int _ringDistance = 0;
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};
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