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Camera on Android: Choose the preview framerate closest to 30fps.

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Might help #17283
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Henrik Rydgård 2023-04-16 10:19:23 +02:00
parent 9c9df208d3
commit 449d68a43d
1 changed files with 22 additions and 6 deletions
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28
android/src/org/ppsspp/ppsspp/CameraHelper.java
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@ -224,19 +224,35 @@ class CameraHelper {
throw new Exception("Couldn't find a viable preview size");
}
Log.d(TAG, "setPreviewSize(" + mPreviewSize.width + ", " + mPreviewSize.height + ")");
Log.i(TAG, "setPreviewSize(" + mPreviewSize.width + ", " + mPreviewSize.height + ")");
param.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
// Set preview FPS
int[] fps;
List<int[]> previewFps = param.getSupportedPreviewFpsRange();
fps = previewFps.get(0);
int idealRate = 30000;
int bestIndex = -1;
int bestDistance = 0; // bestIndex is -1 so irrelevant what the initial value is here.
for (int i = 0; i < previewFps.size(); i++) {
Log.d(TAG, "getSupportedPreviewFpsRange[" + i + "]: " + previewFps.get(i)[0] + " " + previewFps.get(i)[1]);
if (previewFps.get(i)[0] <= fps[0] && previewFps.get(i)[1] <= fps[1]) {
fps = previewFps.get(i);
int rangeStart = previewFps.get(i)[0];
int rangeEnd = previewFps.get(i)[1];
int distance = Integer.max(Math.abs(rangeStart - idealRate), Math.abs(rangeEnd - idealRate));
if (bestIndex == -1 || distance < bestDistance) {
bestDistance = distance;
bestIndex = i;
}
Log.d(TAG, "getSupportedPreviewFpsRange[" + i + "]: " + previewFps.get(i)[0] + " " + previewFps.get(i)[1]);
}
if (bestIndex == -1) {
// This is pretty much impossible.
throw new Exception("Couldn't find a viable preview FPS");
}
int[] fps = previewFps.get(bestIndex);
Log.d(TAG, "setPreviewFpsRange(" + fps[0] + ", " + fps[1] + ")");
param.setPreviewFpsRange(fps[0], fps[1]);