void
MixerCore::ApplyOutputFormat()
{
ASSERT_LOCKED();
media_multi_audio_format format = fOutput->MediaOutput().format.u.raw_audio;
if (fMixBuffer != NULL)
rtm_free(fMixBuffer);
delete fMixBufferChannelTypes;
fMixBufferFrameRate = (int32)(0.5 + format.frame_rate);
fMixBufferFrameCount = frames_per_buffer(format);
if (fDoubleRateMixing) {
fMixBufferFrameRate *= 2;
fMixBufferFrameCount *= 2;
}
fMixBufferChannelCount = format.channel_count;
ASSERT(fMixBufferChannelCount == fOutput->GetOutputChannelCount());
fMixBufferChannelTypes = new int32 [format.channel_count];
for (int i = 0; i < fMixBufferChannelCount; i++) {
fMixBufferChannelTypes[i]
= ChannelMaskToChannelType(GetChannelMask(i, format.channel_mask));
}
fMixBuffer = (float *)rtm_alloc(NULL, sizeof(float) * fMixBufferFrameCount * fMixBufferChannelCount);
ASSERT(fMixBuffer);
if (fResampler) {
for (int i = 0; i < fMixBufferChannelCount; i++)
delete fResampler[i];
delete [] fResampler;
}
fResampler = new Resampler * [fMixBufferChannelCount];
for (int i = 0; i < fMixBufferChannelCount; i++) {
fResampler[i] = new Resampler(media_raw_audio_format::B_AUDIO_FLOAT,
format.format);
}
TRACE("MixerCore::OutputFormatChanged:\n");
TRACE(" fMixBufferFrameRate %ld\n", fMixBufferFrameRate);
TRACE(" fMixBufferFrameCount %ld\n", fMixBufferFrameCount);
TRACE(" fMixBufferChannelCount %ld\n", fMixBufferChannelCount);
for (int i = 0; i < fMixBufferChannelCount; i++)
TRACE(" fMixBufferChannelTypes[%i] %ld\n", i, fMixBufferChannelTypes[i]);
MixerInput *input;
for (int i = 0; (input = Input(i)); i++)
input->SetMixBufferFormat(fMixBufferFrameRate, fMixBufferFrameCount);
}
void
MixerInput::_UpdateInputChannelDestinations()
{
int channel_count;
uint32 all_bits;
uint32 mask;
TRACE("_UpdateInputChannelDestinations: enter\n");
for (int i = 0; i < fInputChannelCount; i++) {
TRACE("_UpdateInputChannelDestinations: input channel %d, "
"destination_mask 0x%08lX, base %p, gain %.3f\n", i,
fInputChannelInfo[i].destination_mask,
fInputChannelInfo[i].buffer_base, fInputChannelInfo[i].gain);
}
all_bits = 0;
for (int i = 0; i < fInputChannelCount; i++)
all_bits |= fInputChannelInfo[i].destination_mask;
TRACE("_UpdateInputChannelDestinations: all_bits = %08lx\n", all_bits);
channel_count = count_nonzero_bits(all_bits);
TRACE("_UpdateInputChannelDestinations: %d input channels, %d mixer "
"channels (%d old)\n", fInputChannelCount, channel_count,
fMixerChannelCount);
if (channel_count != fMixerChannelCount) {
delete [] fMixerChannelInfo;
fMixerChannelInfo = new mixer_chan_info[channel_count];
fMixerChannelCount = channel_count;
}
// assign each mixer channel one type
// and the gain from the fChannelTypeGain[]
mask = 1;
for (int i = 0; i < fMixerChannelCount; i++) {
while (mask != 0 && (all_bits & mask) == 0)
mask <<= 1;
fMixerChannelInfo[i].destination_type = ChannelMaskToChannelType(mask);
fMixerChannelInfo[i].destination_gain
= fChannelTypeGain[fMixerChannelInfo[i].destination_type];
mask <<= 1;
}
// assign buffer_base pointer for each mixer channel
for (int i = 0; i < fMixerChannelCount; i++) {
int j;
for (j = 0; j < fInputChannelCount; j++) {
if (fInputChannelInfo[j].destination_mask
& ChannelTypeToChannelMask(
fMixerChannelInfo[i].destination_type)) {
fMixerChannelInfo[i].buffer_base = fMixBuffer ? &fMixBuffer[j]
: 0;
break;
}
}
if (j == fInputChannelCount) {
ERROR("buffer assignment failed for mixer chan %d\n", i);
fMixerChannelInfo[i].buffer_base = fMixBuffer;
}
}
for (int i = 0; i < fMixerChannelCount; i++) {
TRACE("_UpdateInputChannelDestinations: mixer channel %d, type %2d, "
"base %p, gain %.3f\n", i, fMixerChannelInfo[i].destination_type,
fMixerChannelInfo[i].buffer_base,
fMixerChannelInfo[i].destination_gain);
}
TRACE("_UpdateInputChannelDestinations: leave\n");
}
