mirror of
https://github.com/WinampDesktop/winamp.git
synced 2024-11-15 01:24:55 -05:00
116 lines
No EOL
2.9 KiB
C++
116 lines
No EOL
2.9 KiB
C++
#include "AVIAACDecoder.h"
|
|
#include <math.h>
|
|
#include "../nsutil/pcm.h"
|
|
|
|
int AVIDecoder::CreateAudioDecoder(const nsavi::AVIH *avi_header,
|
|
const nsavi::STRH *stream_header, const nsavi::STRF *stream_format, const nsavi::STRD *stream_data,
|
|
unsigned int preferred_bits, unsigned int max_channels, bool floating_point,
|
|
ifc_aviaudiodecoder **decoder)
|
|
{
|
|
nsavi::audio_format *waveformat = (nsavi::audio_format *)stream_format;
|
|
|
|
if (waveformat->format == nsavi::audio_format_aac)
|
|
{
|
|
AVIAACDecoder *aac_decoder = AVIAACDecoder::Create(waveformat, preferred_bits, max_channels, floating_point);
|
|
if (aac_decoder)
|
|
{
|
|
*decoder = aac_decoder;
|
|
return CREATEDECODER_SUCCESS;
|
|
}
|
|
return CREATEDECODER_SUCCESS;
|
|
}
|
|
|
|
return CREATEDECODER_NOT_MINE;
|
|
|
|
}
|
|
|
|
#define CBCLASS AVIDecoder
|
|
START_DISPATCH;
|
|
CB(CREATE_AUDIO_DECODER, CreateAudioDecoder)
|
|
END_DISPATCH;
|
|
#undef CBCLASS
|
|
|
|
AVIAACDecoder *AVIAACDecoder::Create(const nsavi::audio_format *waveformat, 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 (waveformat->extra_size_bytes)
|
|
{
|
|
AVIAACDecoder * decoder = new AVIAACDecoder(preferred_bits, floating_point);
|
|
if (decoder && SUCCEEDED(decoder->decoder.Open((const unsigned char *)(waveformat + 1), waveformat->extra_size_bytes))) {
|
|
return decoder;
|
|
}
|
|
delete decoder;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVIAACDecoder::AVIAACDecoder(unsigned int bps, bool floating_point)
|
|
: bps(bps), floating_point(floating_point)
|
|
{
|
|
}
|
|
|
|
int AVIAACDecoder::OutputFrameSize(size_t *frame_size)
|
|
{
|
|
size_t local_frame_size;
|
|
if (FAILED(decoder.OutputBlockSizeSamples(&local_frame_size))) {
|
|
return AVI_FAILURE;
|
|
}
|
|
|
|
*frame_size = local_frame_size;
|
|
return AVI_SUCCESS;
|
|
}
|
|
|
|
int AVIAACDecoder::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 AVI_FAILURE;
|
|
}
|
|
|
|
*sampleRate = local_sample_rate;
|
|
*channels = local_channels;
|
|
*bitsPerSample = bps;
|
|
*isFloat = floating_point;
|
|
return AVI_SUCCESS;
|
|
}
|
|
|
|
int AVIAACDecoder::DecodeChunk(uint16_t type, void **inputBuffer, size_t *inputBufferBytes, void *outputBuffer, size_t *outputBufferBytes)
|
|
{
|
|
if (SUCCEEDED(decoder.Feed(*inputBuffer, *inputBufferBytes))
|
|
&& SUCCEEDED(decoder.Decode(outputBuffer, outputBufferBytes, bps, false, 1.0))) {
|
|
*inputBufferBytes = 0;
|
|
return AVI_SUCCESS;
|
|
}
|
|
return AVI_FAILURE;
|
|
}
|
|
|
|
void AVIAACDecoder::Flush()
|
|
{
|
|
decoder.Flush();
|
|
}
|
|
|
|
void AVIAACDecoder::Close()
|
|
{
|
|
delete this;
|
|
}
|
|
|
|
#define CBCLASS AVIAACDecoder
|
|
START_DISPATCH;
|
|
CB(OUTPUT_FRAME_SIZE, OutputFrameSize)
|
|
CB(GET_OUTPUT_PROPERTIES, GetOutputProperties)
|
|
CB(DECODE_CHUNK, DecodeChunk)
|
|
VCB(FLUSH, Flush)
|
|
VCB(CLOSE, Close)
|
|
END_DISPATCH;
|
|
#undef CBCLASS |