mirror of
https://github.com/mpv-player/mpv
synced 2024-12-13 02:15:59 +00:00
4a7c3f22ec
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3064 b3059339-0415-0410-9bf9-f77b7e298cf2
176 lines
5.3 KiB
C
176 lines
5.3 KiB
C
/********************************************************
|
|
|
|
DirectShow audio decoder
|
|
Copyright 2001 Eugene Kuznetsov (divx@euro.ru)
|
|
|
|
*********************************************************/
|
|
|
|
#include "DS_AudioDecoder.h"
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#define __MODULE__ "DirectShow audio decoder"
|
|
const GUID FORMAT_WaveFormatEx = {
|
|
0x05589f81, 0xc356, 0x11CE,
|
|
{ 0xBF, 0x01, 0x00, 0xAA, 0x00, 0x55, 0x59, 0x5A }
|
|
};
|
|
const GUID MEDIATYPE_Audio = {
|
|
0x73647561, 0x0000, 0x0010,
|
|
{ 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71 }
|
|
};
|
|
const GUID MEDIASUBTYPE_PCM = {
|
|
0x00000001, 0x0000, 0x0010,
|
|
{ 0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B, 0x71 }
|
|
};
|
|
|
|
typedef long STDCALL (*GETCLASS) (GUID*, GUID*, void**);
|
|
|
|
DS_AudioDecoder * DS_AudioDecoder_Create(const CodecInfo * info, const WAVEFORMATEX* wf)
|
|
{
|
|
DS_AudioDecoder *this;
|
|
int sz;
|
|
WAVEFORMATEX* pWF;
|
|
|
|
this = malloc(sizeof(DS_AudioDecoder));
|
|
|
|
sz = 18 + wf->cbSize;
|
|
this->m_sVhdr = malloc(sz);
|
|
memcpy(this->m_sVhdr, wf, sz);
|
|
this->m_sVhdr2 = malloc(sz);
|
|
memcpy(this->m_sVhdr2, this->m_sVhdr, sz);
|
|
|
|
pWF = (WAVEFORMATEX*)this->m_sVhdr2;
|
|
pWF->wFormatTag = 1;
|
|
pWF->wBitsPerSample = 16;
|
|
pWF->nBlockAlign = 2*pWF->nChannels;
|
|
pWF->cbSize = 0;
|
|
|
|
memcpy(&this->in_fmt,wf,sizeof(WAVEFORMATEX));
|
|
|
|
memset(&this->m_sOurType, 0, sizeof(this->m_sOurType));
|
|
this->m_sOurType.majortype=MEDIATYPE_Audio;
|
|
this->m_sOurType.subtype=MEDIASUBTYPE_PCM;
|
|
this->m_sOurType.subtype.f1=wf->wFormatTag;
|
|
this->m_sOurType.formattype=FORMAT_WaveFormatEx;
|
|
this->m_sOurType.lSampleSize=wf->nBlockAlign;
|
|
this->m_sOurType.bFixedSizeSamples=1;
|
|
this->m_sOurType.bTemporalCompression=0;
|
|
this->m_sOurType.pUnk=0;
|
|
this->m_sOurType.cbFormat=sz;
|
|
this->m_sOurType.pbFormat=this->m_sVhdr;
|
|
|
|
memset(&this->m_sDestType, 0, sizeof(this->m_sDestType));
|
|
this->m_sDestType.majortype=MEDIATYPE_Audio;
|
|
this->m_sDestType.subtype=MEDIASUBTYPE_PCM;
|
|
this->m_sDestType.subtype.f1=pWF->wFormatTag;
|
|
this->m_sDestType.formattype=FORMAT_WaveFormatEx;
|
|
this->m_sDestType.bFixedSizeSamples=1;
|
|
this->m_sDestType.bTemporalCompression=0;
|
|
this->m_sDestType.lSampleSize=2*wf->nChannels;
|
|
this->m_sDestType.pUnk=0;
|
|
this->m_sDestType.cbFormat=pWF->cbSize;
|
|
this->m_sDestType.pbFormat=this->m_sVhdr2;
|
|
|
|
/*try*/
|
|
{
|
|
ALLOCATOR_PROPERTIES props, props1;
|
|
this->m_pDS_Filter = DS_FilterCreate((const char*)info->dll, info->guid, &this->m_sOurType, &this->m_sDestType);
|
|
if( !this->m_pDS_Filter ) {
|
|
free(this);
|
|
return NULL;
|
|
}
|
|
|
|
this->m_pDS_Filter->Start(this->m_pDS_Filter);
|
|
|
|
props.cBuffers=1;
|
|
props.cbBuffer=this->m_sOurType.lSampleSize;
|
|
props.cbAlign=props.cbPrefix=0;
|
|
this->m_pDS_Filter->m_pAll->vt->SetProperties(this->m_pDS_Filter->m_pAll, &props, &props1);
|
|
this->m_pDS_Filter->m_pAll->vt->Commit(this->m_pDS_Filter->m_pAll);
|
|
}
|
|
/*
|
|
catch (FatalError& e)
|
|
{
|
|
e.PrintAll();
|
|
delete[] m_sVhdr;
|
|
delete[] m_sVhdr2;
|
|
delete m_pDS_Filter;
|
|
throw;
|
|
}
|
|
*/
|
|
return this;
|
|
}
|
|
|
|
void DS_AudioDecoder_Destroy(DS_AudioDecoder *this)
|
|
{
|
|
free(this->m_sVhdr);
|
|
free(this->m_sVhdr2);
|
|
DS_Filter_Destroy(this->m_pDS_Filter);
|
|
free(this);
|
|
}
|
|
|
|
int DS_AudioDecoder_Convert(DS_AudioDecoder *this, const void* in_data, uint_t in_size,
|
|
void* out_data, uint_t out_size,
|
|
uint_t* size_read, uint_t* size_written)
|
|
{
|
|
uint_t written = 0;
|
|
uint_t read = 0;
|
|
|
|
if (!in_data || !out_data)
|
|
return -1;
|
|
|
|
in_size -= in_size%this->in_fmt.nBlockAlign;
|
|
while (in_size>0)
|
|
{
|
|
uint_t frame_size = 0;
|
|
char* frame_pointer;
|
|
IMediaSample* sample=0;
|
|
char* ptr;
|
|
int result;
|
|
|
|
// this->m_pOurOutput->SetFramePointer(out_data+written);
|
|
this->m_pDS_Filter->m_pOurOutput->SetFramePointer(this->m_pDS_Filter->m_pOurOutput,&frame_pointer);
|
|
this->m_pDS_Filter->m_pOurOutput->SetFrameSizePointer(this->m_pDS_Filter->m_pOurOutput,(long*)&frame_size);
|
|
this->m_pDS_Filter->m_pAll->vt->GetBuffer(this->m_pDS_Filter->m_pAll, &sample, 0, 0, 0);
|
|
if (!sample)
|
|
{
|
|
Debug printf("DS_AudioDecoder::Convert() Error: null sample\n");
|
|
break;
|
|
}
|
|
sample->vt->GetPointer(sample, (BYTE **)&ptr);
|
|
memcpy(ptr, (const uint8_t*)in_data + read, this->in_fmt.nBlockAlign);
|
|
sample->vt->SetActualDataLength(sample, this->in_fmt.nBlockAlign);
|
|
sample->vt->SetSyncPoint(sample, 1);
|
|
sample->vt->SetPreroll(sample, 0);
|
|
result = this->m_pDS_Filter->m_pImp->vt->Receive(this->m_pDS_Filter->m_pImp, sample);
|
|
if (result)
|
|
Debug printf("DS_AudioDecoder::Convert() Error: putting data into input pin %x\n", result);
|
|
if ((written + frame_size) > out_size)
|
|
{
|
|
sample->vt->Release((IUnknown*)sample);
|
|
break;
|
|
}
|
|
memcpy((uint8_t*)out_data + written, frame_pointer, frame_size);
|
|
sample->vt->Release((IUnknown*)sample);
|
|
read+=this->in_fmt.nBlockAlign;
|
|
written+=frame_size;
|
|
}
|
|
if (size_read)
|
|
*size_read = read;
|
|
if (size_written)
|
|
*size_written = written;
|
|
return 0;
|
|
}
|
|
|
|
int DS_AudioDecoder_GetSrcSize(DS_AudioDecoder *this, int dest_size)
|
|
{
|
|
double efficiency =(double) this->in_fmt.nAvgBytesPerSec
|
|
/ (this->in_fmt.nSamplesPerSec*this->in_fmt.nBlockAlign);
|
|
int frames = (int)(dest_size*efficiency);;
|
|
|
|
if (frames < 1)
|
|
frames = 1;
|
|
return frames * this->in_fmt.nBlockAlign;
|
|
}
|