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/********************************************************
DirectShow Audio decoder implementation
Copyright 2000 Eugene Kuznetsov (divx@euro.ru)
Converted C++ --> C :) by A'rpi/ESP-team
*********************************************************/
//#include <config.h>
//#include "DS_AudioDecoder.h"
//#include <string.h>
#include <stdlib.h>
#include <except.h>
#define __MODULE__ "DirectShow_AudioDecoder"
#include <errno.h>
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
//#include <loader.h>
//#include <wine/winbase.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <strstream>
#include <dlfcn.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <registry.h>
#include <wine/winreg.h>
#include "guids.h"
#include "interfaces.h"
#include "DS_Filter.h"
#include "BitmapInfo.h"
#include <string>
#include <default.h>
#include "DS_AudioDec.h"
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};
using namespace std;
extern "C" char* def_path;
static DS_Filter* dsf=0;
static AM_MEDIA_TYPE m_sOurType, m_sDestType;
// static void* m_pCust;
static char* m_sVhdr;
static char* m_sVhdr2;
static WAVEFORMATEX in_fmt;
// int m_iState=0;
extern "C" int DS_AudioDecoder_Open(char* dllname, GUID* guid, WAVEFORMATEX* wf)
{
m_sVhdr=new char[18+wf->cbSize];
memcpy(m_sVhdr, wf, 18+wf->cbSize);
m_sVhdr2=new char[18];
memcpy(m_sVhdr2, m_sVhdr, 18);
WAVEFORMATEX* pWF=(WAVEFORMATEX*)m_sVhdr2;
pWF->wFormatTag=1;
pWF->wBitsPerSample=16;
pWF->nBlockAlign=2*pWF->nChannels;
pWF->cbSize=0;
in_fmt=*wf;
memset(&m_sOurType, 0, sizeof m_sOurType);
m_sOurType.majortype=MEDIATYPE_Audio;
m_sOurType.subtype=MEDIASUBTYPE_PCM;
m_sOurType.subtype.f1=wf->wFormatTag;
m_sOurType.formattype=FORMAT_WaveFormatEx;
m_sOurType.lSampleSize=wf->nBlockAlign;
m_sOurType.bFixedSizeSamples=true;
m_sOurType.bTemporalCompression=false;
m_sOurType.pUnk=0;
m_sOurType.cbFormat=18+wf->cbSize;
m_sOurType.pbFormat=m_sVhdr;
memset(&m_sDestType, 0, sizeof m_sDestType);
m_sDestType.majortype=MEDIATYPE_Audio;
m_sDestType.subtype=MEDIASUBTYPE_PCM;
m_sDestType.formattype=FORMAT_WaveFormatEx;
m_sDestType.bFixedSizeSamples=true;
m_sDestType.bTemporalCompression=false;
m_sDestType.lSampleSize=2*wf->nChannels;
m_sDestType.pUnk=0;
m_sDestType.cbFormat=18;
m_sDestType.pbFormat=m_sVhdr2;
try
{
dsf=new DS_Filter();
dsf->Create(dllname, guid, &m_sOurType, &m_sDestType);
dsf->Start();
ALLOCATOR_PROPERTIES props, props1;
props.cBuffers=1;
props.cbBuffer=m_sOurType.lSampleSize;
props.cbAlign=props.cbPrefix=0;
dsf->m_pAll->vt->SetProperties(dsf->m_pAll, &props, &props1);
dsf->m_pAll->vt->Commit(dsf->m_pAll);
}
catch(FatalError e)
{
e.PrintAll();
delete[] m_sVhdr;
delete[] m_sVhdr2;
return 1;
}
return 0;
}
extern "C" void DS_AudioDecoder_Close(){
delete[] m_sVhdr;
delete[] m_sVhdr2;
}
extern "C" int DS_AudioDecoder_GetSrcSize(int dest_size)
{
double efficiency=in_fmt.nAvgBytesPerSec/double(in_fmt.nSamplesPerSec*in_fmt.nBlockAlign);
int frames=(int)(dest_size*efficiency);
if(frames<1)frames=1;
return frames*in_fmt.nBlockAlign;
}
extern "C" int DS_AudioDecoder_Convert(unsigned char* in_data, unsigned in_size,
unsigned char* out_data, unsigned out_size,
unsigned* size_read, unsigned* size_written)
{
if(in_data==0)return -1;
if(out_data==0)return -1;
int written=0;
int read=0;
in_size-=in_size%in_fmt.nBlockAlign;
while(in_size>0)
{
long frame_size=0;
char* frame_pointer;
// m_pOurOutput->SetFramePointer(out_data+written);
dsf->m_pOurOutput->SetFramePointer(&frame_pointer);
dsf->m_pOurOutput->SetFrameSizePointer(&frame_size);
IMediaSample* sample=0;
dsf->m_pAll->vt->GetBuffer(dsf->m_pAll, &sample, 0, 0, 0);
if(!sample)
{
cerr<<"ERROR: null sample"<<endl;
break;
}
char* ptr;
sample->vt->GetPointer(sample, (BYTE **)&ptr);
memcpy(ptr, in_data+read, in_fmt.nBlockAlign);
sample->vt->SetActualDataLength(sample, in_fmt.nBlockAlign);
sample->vt->SetSyncPoint(sample, true);
sample->vt->SetPreroll(sample, 0);
int result=dsf->m_pImp->vt->Receive(dsf->m_pImp, sample);
if(result) printf("Error putting data into input pin %x\n", result);
if(written+frame_size>out_size)
{
sample->vt->Release((IUnknown*)sample);
break;
}
memcpy(out_data+written, frame_pointer, frame_size);
sample->vt->Release((IUnknown*)sample);
read+=in_fmt.nBlockAlign;
written+=frame_size;
}
if(size_read) *size_read=read;
if(size_written) *size_written=written;
return 0;
}
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