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Я изучал ffmpeg для андроидной библиотеки, не смог понять часть кода.Запись видео с использованием ffmpeg в android
public void onPreviewFrame(byte[] data, Camera camera)
{
if (audioRecord == null || audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING)
{
startTime = System.currentTimeMillis();
return;
}
if (RECORD_LENGTH > 0) {
int i = imagesIndex++ % images.length;
yuvImage = images[i];
timestamps[i] = 1000 * (System.currentTimeMillis() - startTime);
}
//till here i was able to understand but the first statement is for what purpose?
/* get video data */
if (yuvImage != null && recording) {
((ByteBuffer)yuvImage.image[0].position(0)).put(data);
}
}