private void copyStereoSamplesToMem(int[] mixedSamples, int addr, int samples, int leftVol, int rightVol, bool writeSamples)
{
// Adjust the volume according to the global volume settings
leftVol = Audio.getVolume(leftVol);
rightVol = Audio.getVolume(rightVol);
if (!writeSamples)
{
// If the samples have not been changed and the volume settings
// would also not adjust the samples, no need to copy them back to memory.
if (leftVol == MAX_VOLUME && rightVol == MAX_VOLUME)
{
return;
}
}
int lengthInBytes = mixedSamples.Length << 1;
IMemoryWriter memoryWriter = MemoryWriter.getMemoryWriter(addr, lengthInBytes, 4);
for (int i = 0, j = 0; i < samples; i++, j += 2)
{
short sampleLeft = clampSample(mixedSamples[j]);
short sampleRight = clampSample(mixedSamples[j + 1]);
sampleLeft = SoundChannel.adjustSample(sampleLeft, leftVol);
sampleRight = SoundChannel.adjustSample(sampleRight, rightVol);
int sampleStereo = getSampleStereo(sampleLeft, sampleRight);
memoryWriter.writeNext(sampleStereo);
}
memoryWriter.flush();
}
private void copyMonoSamplesToMem(int[] mixedSamples, int addr, int samples, int monoVol, bool writeSamples)
{
// Adjust the volume according to the global volume settings
monoVol = Audio.getVolume(monoVol);
if (!writeSamples)
{
// If the samples have not been changed and the volume settings
// would also not adjust the samples, no need to copy them back to memory.
if (monoVol == MAX_VOLUME)
{
return;
}
}
int lengthInBytes = mixedSamples.Length << 1;
IMemoryWriter memoryWriter = MemoryWriter.getMemoryWriter(addr, lengthInBytes, 2);
for (int i = 0, j = 0; i < samples; i++, j++)
{
short sampleMono = clampSample(mixedSamples[j]);
sampleMono = SoundChannel.adjustSample(sampleMono, monoVol);
memoryWriter.writeNext(sampleMono & 0xFFFF);
}
memoryWriter.flush();
}
protected internal static int doAudioOutput(SoundChannel channel, int pvoid_buf)
{
int ret = -1;
if (channel.Reserved)
{
//if (log.DebugEnabled)
{
Console.WriteLine(string.Format("doAudioOutput({0}, 0x{1:X8})", channel.ToString(), pvoid_buf));
}
int bytesPerSample = channel.FormatStereo ? 4 : 2;
int nbytes = bytesPerSample * channel.SampleLength;
sbyte[] data = new sbyte[nbytes];
IMemoryReader memoryReader = MemoryReader.getMemoryReader(pvoid_buf, nbytes, 2);
if (channel.FormatMono)
{
int volume = Audio.getVolume(channel.LeftVolume);
for (int i = 0; i < nbytes; i += 2)
{
short sample = (short)memoryReader.readNext();
sample = SoundChannel.adjustSample(sample, volume);
SoundChannel.storeSample(sample, data, i);
}
}
else
{
int leftVolume = Audio.getVolume(channel.LeftVolume);
int rightVolume = Audio.getVolume(channel.RightVolume);
for (int i = 0; i < nbytes; i += 4)
{
short lsample = (short)memoryReader.readNext();
short rsample = (short)memoryReader.readNext();
lsample = SoundChannel.adjustSample(lsample, leftVolume);
rsample = SoundChannel.adjustSample(rsample, rightVolume);
SoundChannel.storeSample(lsample, data, i);
SoundChannel.storeSample(rsample, data, i + 2);
}
}
Modules.sceAudioModule.audioData = data;
channel.play(data);
ret = channel.SampleLength;
}
else
{
Console.WriteLine("doAudioOutput: channel " + channel.Index + " not reserved");
}
return(ret);
}