mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-12-28 23:16:06 +00:00
116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
#include "MKVAACDecoder.h"
|
|
#include <math.h>
|
|
#include "../nsutil/pcm.h"
|
|
|
|
MKVAACDecoder::MKVAACDecoder(unsigned int bps, bool floating_point)
|
|
: bps(bps), floating_point(floating_point)
|
|
{
|
|
|
|
}
|
|
|
|
MKVAACDecoder *MKVAACDecoder::Create(const nsmkv::TrackEntryData *track_entry_data, const nsmkv::AudioData *audio_data, unsigned int preferred_bits, unsigned int max_channels, bool floating_point)
|
|
{
|
|
if (!floating_point)
|
|
{
|
|
if (preferred_bits >= 24)
|
|
preferred_bits=24;
|
|
else
|
|
preferred_bits=16;
|
|
}
|
|
/*if (!max_channels)
|
|
max_channels = 8;*/
|
|
|
|
if (track_entry_data->codec_private && track_entry_data->codec_private_len)
|
|
{
|
|
MKVAACDecoder *decoder = new MKVAACDecoder(preferred_bits, floating_point);
|
|
if (decoder && SUCCEEDED(decoder->decoder.Open(track_entry_data->codec_private, track_entry_data->codec_private_len))) {
|
|
return decoder;
|
|
}
|
|
delete decoder;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int MKVAACDecoder::GetOutputProperties(unsigned int *sampleRate, unsigned int *channels, unsigned int *bitsPerSample, bool *isFloat)
|
|
{
|
|
uint32_t local_sample_rate, local_channels;
|
|
HRESULT hr = decoder.GetOutputProperties(&local_sample_rate, &local_channels);
|
|
if (FAILED(hr)) {
|
|
return MKV_FAILURE;
|
|
}
|
|
|
|
*sampleRate = local_sample_rate;
|
|
*channels = local_channels;
|
|
|
|
*bitsPerSample = bps;
|
|
*isFloat = floating_point;
|
|
return MKV_SUCCESS;
|
|
}
|
|
|
|
void MKVAACDecoder::Flush()
|
|
{
|
|
decoder.Flush();
|
|
}
|
|
|
|
int MKVAACDecoder::OutputFrameSize(size_t *frame_size)
|
|
{
|
|
size_t local_frame_size;
|
|
if (FAILED(decoder.OutputBlockSizeSamples(&local_frame_size))) {
|
|
return MKV_FAILURE;
|
|
}
|
|
*frame_size = local_frame_size;
|
|
|
|
return MKV_SUCCESS;
|
|
}
|
|
|
|
void MKVAACDecoder::Close()
|
|
{
|
|
delete this;
|
|
}
|
|
|
|
int MKVAACDecoder::DecodeBlock(void *inputBuffer, size_t inputBufferBytes, void *outputBuffer, size_t *outputBufferBytes)
|
|
{
|
|
decoder.Feed(inputBuffer, inputBufferBytes);
|
|
decoder.Decode(outputBuffer, outputBufferBytes, bps, false, 1.0);
|
|
return MKV_SUCCESS;
|
|
}
|
|
|
|
void MKVAACDecoder::EndOfStream()
|
|
{
|
|
decoder.Feed(0, 0);
|
|
}
|
|
|
|
#define CBCLASS MKVAACDecoder
|
|
START_DISPATCH;
|
|
CB(OUTPUT_FRAME_SIZE, OutputFrameSize)
|
|
CB(GET_OUTPUT_PROPERTIES, GetOutputProperties)
|
|
CB(DECODE_BLOCK, DecodeBlock)
|
|
VCB(FLUSH, Flush)
|
|
VCB(CLOSE, Close)
|
|
VCB(END_OF_STREAM, EndOfStream)
|
|
END_DISPATCH;
|
|
#undef CBCLASS
|
|
|
|
|
|
int MKVDecoder::CreateAudioDecoder(const char *codec_id, const nsmkv::TrackEntryData *track_entry_data, const nsmkv::AudioData *audio_data, unsigned int preferred_bits, unsigned int max_channels,bool floating_point, ifc_mkvaudiodecoder **decoder)
|
|
{
|
|
if (!strcmp(codec_id, "A_AAC"))
|
|
{
|
|
MKVAACDecoder *aac_decoder = MKVAACDecoder::Create(track_entry_data, audio_data, preferred_bits, max_channels, floating_point);
|
|
if (aac_decoder)
|
|
{
|
|
*decoder = aac_decoder;
|
|
return CREATEDECODER_SUCCESS;
|
|
}
|
|
return CREATEDECODER_FAILURE;
|
|
}
|
|
|
|
return CREATEDECODER_NOT_MINE;
|
|
}
|
|
|
|
#define CBCLASS MKVDecoder
|
|
START_DISPATCH;
|
|
CB(CREATE_AUDIO_DECODER, CreateAudioDecoder)
|
|
END_DISPATCH;
|
|
#undef CBCLASS |