nsresult Output(BufferInfo::Param aInfo, void* aBuffer,
MediaFormat::Param aFormat, const TimeUnit& aDuration)
{
// The output on Android is always 16-bit signed
nsresult rv;
int32_t numChannels;
NS_ENSURE_SUCCESS(rv =
aFormat->GetInteger(NS_LITERAL_STRING("channel-count"), &numChannels), rv);
AudioConfig::ChannelLayout layout(numChannels);
if (!layout.IsValid()) {
return NS_ERROR_FAILURE;
}
int32_t sampleRate;
NS_ENSURE_SUCCESS(rv =
aFormat->GetInteger(NS_LITERAL_STRING("sample-rate"), &sampleRate), rv);
int32_t size;
NS_ENSURE_SUCCESS(rv = aInfo->Size(&size), rv);
int32_t offset;
NS_ENSURE_SUCCESS(rv = aInfo->Offset(&offset), rv);
#ifdef MOZ_SAMPLE_TYPE_S16
const int32_t numSamples = size / 2;
#else
#error We only support 16-bit integer PCM
#endif
const int32_t numFrames = numSamples / numChannels;
AlignedAudioBuffer audio(numSamples);
if (!audio) {
return NS_ERROR_OUT_OF_MEMORY;
}
const uint8_t* bufferStart = static_cast<uint8_t*>(aBuffer) + offset;
PodCopy(audio.get(), reinterpret_cast<const AudioDataValue*>(bufferStart),
numSamples);
int64_t presentationTimeUs;
NS_ENSURE_SUCCESS(rv = aInfo->PresentationTimeUs(&presentationTimeUs), rv);
RefPtr<AudioData> data = new AudioData(0, presentationTimeUs,
aDuration.ToMicroseconds(),
numFrames,
Move(audio),
numChannels,
sampleRate);
INVOKE_CALLBACK(Output, data);
return NS_OK;
}
nsresult Output(BufferInfo::Param aInfo, void* aBuffer,
MediaFormat::Param aFormat,
const media::TimeUnit& aDuration) {
// The output on Android is always 16-bit signed
nsresult rv;
int32_t numChannels;
NS_ENSURE_SUCCESS(rv =
aFormat->GetInteger(NS_LITERAL_STRING("channel-count"), &numChannels), rv);
int32_t sampleRate;
NS_ENSURE_SUCCESS(rv =
aFormat->GetInteger(NS_LITERAL_STRING("sample-rate"), &sampleRate), rv);
int32_t size;
NS_ENSURE_SUCCESS(rv = aInfo->Size(&size), rv);
const int32_t numFrames = (size / numChannels) / 2;
AudioDataValue* audio = new AudioDataValue[size];
PodCopy(audio, static_cast<AudioDataValue*>(aBuffer), size);
int32_t offset;
NS_ENSURE_SUCCESS(rv = aInfo->Offset(&offset), rv);
int64_t presentationTimeUs;
NS_ENSURE_SUCCESS(rv = aInfo->PresentationTimeUs(&presentationTimeUs), rv);
nsRefPtr<AudioData> data = new AudioData(offset, presentationTimeUs,
aDuration.ToMicroseconds(),
numFrames,
audio,
numChannels,
sampleRate);
ENVOKE_CALLBACK(Output, data);
return NS_OK;
}