diff options
Diffstat (limited to 'src/libw32dll/dmo/DMO_AudioDecoder.c')
| -rw-r--r-- | src/libw32dll/dmo/DMO_AudioDecoder.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/libw32dll/dmo/DMO_AudioDecoder.c b/src/libw32dll/dmo/DMO_AudioDecoder.c new file mode 100644 index 000000000..10ddfc367 --- /dev/null +++ b/src/libw32dll/dmo/DMO_AudioDecoder.c @@ -0,0 +1,178 @@ +/******************************************************** + + DirectShow audio decoder + Copyright 2001 Eugene Kuznetsov (divx@euro.ru) + +*********************************************************/ + +#ifndef NOAVIFILE_HEADERS +#include "audiodecoder.h" +#include "except.h" +#else +#include "libwin32.h" +#ifdef LDT_paranoia +#include "ldt_keeper.h" +#endif +#endif + +#include "DMO_Filter.h" +#include "DMO_AudioDecoder.h" + +struct _DMO_AudioDecoder +{ + DMO_MEDIA_TYPE m_sOurType, m_sDestType; + DMO_Filter* m_pDMO_Filter; + char* m_sVhdr; + char* m_sVhdr2; + int m_iFlushed; +}; + +#include "DMO_AudioDecoder.h" + +#include <string.h> +#include <stdio.h> +#include <stdlib.h> + +#define __MODULE__ "DirectShow audio decoder" + +typedef long STDCALL (*GETCLASS) (GUID*, GUID*, void**); +extern void print_wave_header(WAVEFORMATEX *h); + +DMO_AudioDecoder * DMO_AudioDecoder_Open(char* dllname, GUID* guid, WAVEFORMATEX* wf,int out_channels) +//DMO_AudioDecoder * DMO_AudioDecoder_Create(const CodecInfo * info, const WAVEFORMATEX* wf) +{ + DMO_AudioDecoder *this; + int sz; + WAVEFORMATEX* pWF; + +#ifdef LDT_paranoia + Setup_LDT_Keeper(); + Setup_FS_Segment(); +#endif + + this = malloc(sizeof(DMO_AudioDecoder)); + + this->m_iFlushed=1; + + 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->nChannels = out_channels; + pWF->nBlockAlign = 2*pWF->nChannels; //pWF->nChannels * (pWF->wBitsPerSample + 7) / 8; + pWF->nAvgBytesPerSec = pWF->nBlockAlign * pWF->nSamplesPerSec; + pWF->cbSize = 0; + + 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.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.formattype=FORMAT_WaveFormatEx; + this->m_sDestType.bFixedSizeSamples=1; + this->m_sDestType.bTemporalCompression=0; + this->m_sDestType.lSampleSize=pWF->nBlockAlign; + this->m_sDestType.cbFormat=18; //pWF->cbSize; + this->m_sDestType.pbFormat=this->m_sVhdr2; + +#if 0 +print_wave_header((WAVEFORMATEX *)this->m_sVhdr); +print_wave_header((WAVEFORMATEX *)this->m_sVhdr2); +#endif + + this->m_pDMO_Filter = DMO_FilterCreate(dllname, guid, &this->m_sOurType, &this->m_sDestType); + if( !this->m_pDMO_Filter ) { + free(this); + return NULL; + } + + return this; +} + +void DMO_AudioDecoder_Destroy(DMO_AudioDecoder *this) +{ + free(this->m_sVhdr); + free(this->m_sVhdr2); + DMO_Filter_Destroy(this->m_pDMO_Filter); + free(this); +} + +int DMO_AudioDecoder_Convert(DMO_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) +{ + DMO_OUTPUT_DATA_BUFFER db; + CMediaBuffer* bufferin; + unsigned long written = 0; + unsigned long read = 0; + int r = 0; + + if (!in_data || !out_data) + return -1; + +#ifdef LDT_paranoia + Setup_FS_Segment(); +#endif + + //m_pDMO_Filter->m_pMedia->vt->Lock(m_pDMO_Filter->m_pMedia, 1); + bufferin = CMediaBufferCreate(in_size, (void*)in_data, in_size, 1); + r = this->m_pDMO_Filter->m_pMedia->vt->ProcessInput(this->m_pDMO_Filter->m_pMedia, 0, + (IMediaBuffer*)bufferin, + (this->m_iFlushed) ? DMO_INPUT_DATA_BUFFERF_SYNCPOINT : 0, + 0, 0); + if (r == 0){ + ((IMediaBuffer*)bufferin)->vt->GetBufferAndLength((IMediaBuffer*)bufferin, 0, &read); + this->m_iFlushed = 0; + } + + ((IMediaBuffer*)bufferin)->vt->Release((IUnknown*)bufferin); + + //printf("RESULTA: %d 0x%x %ld %d %d\n", r, r, read, m_iFlushed, out_size); + if (r == 0 || (unsigned)r == DMO_E_NOTACCEPTING){ + unsigned long status = 0; + /* something for process */ + db.rtTimestamp = 0; + db.rtTimelength = 0; + db.dwStatus = 0; + db.pBuffer = (IMediaBuffer*) CMediaBufferCreate(out_size, out_data, 0, 0); + //printf("OUTSIZE %d\n", out_size); + r = this->m_pDMO_Filter->m_pMedia->vt->ProcessOutput(this->m_pDMO_Filter->m_pMedia, + 0, 1, &db, &status); + + ((IMediaBuffer*)db.pBuffer)->vt->GetBufferAndLength((IMediaBuffer*)db.pBuffer, 0, &written); + ((IMediaBuffer*)db.pBuffer)->vt->Release((IUnknown*)db.pBuffer); + + //printf("RESULTB: %d 0x%x %ld\n", r, r, written); + //printf("Converted %d -> %d\n", in_size, out_size); + } + else if (in_size > 0) + printf("ProcessInputError r:0x%x=%d\n", r, r); + + if (size_read) + *size_read = read; + if (size_written) + *size_written = written; + return r; +} + +int DMO_AudioDecoder_GetSrcSize(DMO_AudioDecoder *this, int dest_size) +{ +// unsigned long inputs, outputs; +// Setup_FS_Segment(); +// this->m_pDMO_Filter->m_pMedia->vt->GetOutputSizeInfo(this->m_pDMO_Filter->m_pMedia, 0, &inputs, &outputs); + return ((WAVEFORMATEX*)this->m_sVhdr)->nBlockAlign*4; +} |