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/********************************************************
DirectShow audio decoder
Copyright 2001 Eugene Kuznetsov (divx@euro.ru)
*********************************************************/
#include "config.h"
#include "libwin32.h"
#include "DS_Filter.h"
struct _DS_AudioDecoder
{
WAVEFORMATEX in_fmt;
AM_MEDIA_TYPE m_sOurType, m_sDestType;
DS_Filter* m_pDS_Filter;
char* m_sVhdr;
char* m_sVhdr2;
};
#include "DS_AudioDecoder.h"
#ifdef WIN32_LOADER
#include "../ldt_keeper.h"
#endif
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
typedef long STDCALL (*GETCLASS) (GUID*, GUID*, void**);
static SampleProcUserData sampleProcData;
DS_AudioDecoder * DS_AudioDecoder_Open(char* dllname, GUID* guid, WAVEFORMATEX* wf)
//DS_AudioDecoder * DS_AudioDecoder_Create(const CodecInfo * info, const WAVEFORMATEX* wf)
{
DS_AudioDecoder *this;
int sz;
WAVEFORMATEX* pWF;
#ifdef WIN32_LOADER
Setup_LDT_Keeper();
Setup_FS_Segment();
#endif
this = malloc(sizeof(DS_AudioDecoder));
sz = 18 + wf->cbSize;
this->m_sVhdr = malloc(sz);
memcpy(this->m_sVhdr, wf, sz);
this->m_sVhdr2 = malloc(18);
memcpy(this->m_sVhdr2, this->m_sVhdr, 18);
pWF = (WAVEFORMATEX*)this->m_sVhdr2;
pWF->wFormatTag = 1;
pWF->wBitsPerSample = 16;
pWF->nBlockAlign = pWF->nChannels * (pWF->wBitsPerSample + 7) / 8;
pWF->cbSize = 0;
pWF->nAvgBytesPerSec = pWF->nBlockAlign * pWF->nSamplesPerSec;
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=pWF->nBlockAlign;
if (wf->wFormatTag == 0x130)
// ACEL hack to prevent memory corruption
// obviosly we are missing something here
this->m_sDestType.lSampleSize *= 288;
this->m_sDestType.pUnk=0;
this->m_sDestType.cbFormat=18; //pWF->cbSize;
this->m_sDestType.pbFormat=this->m_sVhdr2;
//print_wave_header(this->m_sVhdr, MSGL_V);
//print_wave_header(this->m_sVhdr2, MSGL_V);
/*try*/
{
ALLOCATOR_PROPERTIES props, props1;
this->m_pDS_Filter = DS_FilterCreate(dllname, guid, &this->m_sOurType, &this->m_sDestType,&sampleProcData);
if( !this->m_pDS_Filter ) {
free(this);
return NULL;
}
//Commit should be done before binary codec start
this->m_pDS_Filter->m_pAll->vt->Commit(this->m_pDS_Filter->m_pAll);
this->m_pDS_Filter->Start(this->m_pDS_Filter);
}
/*
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, unsigned int in_size,
void* out_data, unsigned int out_size,
unsigned int* size_read, unsigned int* size_written)
{
unsigned int written = 0;
unsigned int read = 0;
if (!in_data || !out_data)
return -1;
#ifdef WIN32_LOADER
Setup_FS_Segment();
#endif
in_size -= in_size%this->in_fmt.nBlockAlign;
while (in_size>0)
{
IMediaSample* sample=0;
char* ptr;
int result;
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->SetActualDataLength(sample, this->in_fmt.nBlockAlign);
sample->vt->GetPointer(sample, (BYTE **)&ptr);
memcpy(ptr, (const uint8_t*)in_data + read, 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 + sampleProcData.frame_size) > out_size)
{
sample->vt->Release((IUnknown*)sample);
break;
}
memcpy((uint8_t*)out_data + written, sampleProcData.frame_pointer, sampleProcData.frame_size);
sample->vt->Release((IUnknown*)sample);
read+=this->in_fmt.nBlockAlign;
written+=sampleProcData.frame_size;
break;
}
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;
}
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