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mpv/loader/dshow/DS_AudioDecoder.c
arpi 4a7c3f22ec mplayer integration
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3064 b3059339-0415-0410-9bf9-f77b7e298cf2
2001-11-22 03:16:31 +00:00

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;
}