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mpv/dll_init.c

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// ACM audio and VfW video codecs initialization
// based on the avifile library [http://divx.euro.ru]
int init_audio_codec(sh_audio_t *sh_audio){
HRESULT ret;
WAVEFORMATEX *in_fmt=&sh_audio->wf;
unsigned long srcsize=0;
if(verbose) printf("======= Win32 (ACM) AUDIO Codec init =======\n");
sh_audio->srcstream=NULL;
// if(in_fmt->nSamplesPerSec==0){ printf("Bad WAVE header!\n");exit(1); }
// MSACM_RegisterAllDrivers();
sh_audio->o_wf.nChannels=in_fmt->nChannels;
sh_audio->o_wf.nSamplesPerSec=in_fmt->nSamplesPerSec;
sh_audio->o_wf.nAvgBytesPerSec=2*sh_audio->o_wf.nSamplesPerSec*sh_audio->o_wf.nChannels;
sh_audio->o_wf.wFormatTag=WAVE_FORMAT_PCM;
sh_audio->o_wf.nBlockAlign=2*in_fmt->nChannels;
sh_audio->o_wf.wBitsPerSample=16;
sh_audio->o_wf.cbSize=0;
win32_codec_name = avi_header.audio_codec;
ret=acmStreamOpen(&sh_audio->srcstream,(HACMDRIVER)NULL,
in_fmt,&sh_audio->o_wf,
NULL,0,0,0);
if(ret){
if(ret==ACMERR_NOTPOSSIBLE)
printf("ACM_Decoder: Unappropriate audio format\n");
else
printf("ACM_Decoder: acmStreamOpen error %d", ret);
sh_audio->srcstream=NULL;
return 0;
}
if(verbose) printf("Audio codec opened OK! ;-)\n");
srcsize=in_fmt->nBlockAlign;
acmStreamSize(sh_audio->srcstream, srcsize, &srcsize, ACM_STREAMSIZEF_SOURCE);
if(srcsize<OUTBURST) srcsize=OUTBURST;
sh_audio->audio_out_minsize=srcsize; // audio output min. size
if(verbose) printf("Audio ACM output buffer min. size: %d\n",srcsize);
acmStreamSize(sh_audio->srcstream, srcsize, &srcsize, ACM_STREAMSIZEF_DESTINATION);
sh_audio->audio_in_minsize=srcsize; // audio input min. size
if(verbose) printf("Audio ACM input buffer min. size: %d\n",srcsize);
sh_audio->a_in_buffer_size=sh_audio->audio_in_minsize;
sh_audio->a_in_buffer=malloc(sh_audio->a_in_buffer_size);
sh_audio->a_in_buffer_len=0;
return 1;
}
int acm_decode_audio(sh_audio_t *sh_audio, void* a_buffer,int len){
ACMSTREAMHEADER ash;
HRESULT hr;
DWORD srcsize=0;
acmStreamSize(sh_audio->srcstream,len , &srcsize, ACM_STREAMSIZEF_DESTINATION);
if(verbose>=3)printf("acm says: srcsize=%d (buffsize=%d) out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,len);
// if(srcsize==0) srcsize=((WAVEFORMATEX *)&sh_audio->o_wf_ext)->nBlockAlign;
if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
if(sh_audio->a_in_buffer_len<srcsize){
sh_audio->a_in_buffer_len+=
demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
srcsize-sh_audio->a_in_buffer_len);
}
memset(&ash, 0, sizeof(ash));
ash.cbStruct=sizeof(ash);
ash.fdwStatus=0;
ash.dwUser=0;
ash.pbSrc=sh_audio->a_in_buffer;
ash.cbSrcLength=sh_audio->a_in_buffer_len;
ash.pbDst=a_buffer;
ash.cbDstLength=len;
hr=acmStreamPrepareHeader(sh_audio->srcstream,&ash,0);
if(hr){
printf("ACM_Decoder: acmStreamPrepareHeader error %d\n",hr);
return -1;
}
hr=acmStreamConvert(sh_audio->srcstream,&ash,0);
if(hr){
printf("ACM_Decoder: acmStreamConvert error %d\n",hr);
return -1;
}
//printf("ACM convert %d -> %d (buf=%d)\n",ash.cbSrcLengthUsed,ash.cbDstLengthUsed,a_in_buffer_len);
if(ash.cbSrcLengthUsed>=sh_audio->a_in_buffer_len){
sh_audio->a_in_buffer_len=0;
} else {
sh_audio->a_in_buffer_len-=ash.cbSrcLengthUsed;
memcpy(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[ash.cbSrcLengthUsed],sh_audio->a_in_buffer_len);
}
len=ash.cbDstLengthUsed;
hr=acmStreamUnprepareHeader(sh_audio->srcstream,&ash,0);
if(hr){
printf("ACM_Decoder: acmStreamUnprepareHeader error %d\n",hr);
}
return len;
}
int init_video_codec(int outfmt){
HRESULT ret;
if(verbose) printf("======= Win32 (VFW) VIDEO Codec init =======\n");
memset(&sh_video->o_bih, 0, sizeof(BITMAPINFOHEADER));
sh_video->o_bih.biSize = sizeof(BITMAPINFOHEADER);
win32_codec_name = avi_header.video_codec;
sh_video->hic = ICOpen( 0x63646976, sh_video->bih.biCompression, ICMODE_FASTDECOMPRESS);
// sh_video->hic = ICOpen( 0x63646976, sh_video->bih.biCompression, ICMODE_DECOMPRESS);
if(!sh_video->hic){
printf("ICOpen failed! unknown codec / wrong parameters?\n");
return 0;
}
// sh_video->bih.biBitCount=32;
ret = ICDecompressGetFormat(sh_video->hic, &sh_video->bih, &sh_video->o_bih);
if(ret){
printf("ICDecompressGetFormat failed: Error %d\n", ret);
return 0;
}
if(verbose) printf("ICDecompressGetFormat OK\n");
// printf("ICM_DECOMPRESS_QUERY=0x%X",ICM_DECOMPRESS_QUERY);
// sh_video->o_bih.biWidth=sh_video->bih.biWidth;
// sh_video->o_bih.biCompression = 0x32315659; // mmioFOURCC('U','Y','V','Y');
// ret=ICDecompressGetFormatSize(sh_video->hic,&sh_video->o_bih);
// sh_video->o_bih.biCompression = 3; //0x32315659;
// sh_video->o_bih.biCompression = mmioFOURCC('U','Y','V','Y');
// sh_video->o_bih.biCompression = mmioFOURCC('U','Y','V','Y');
// sh_video->o_bih.biCompression = mmioFOURCC('Y','U','Y','2');
// sh_video->o_bih.biPlanes=3;
// sh_video->o_bih.biBitCount=16;
if(outfmt==IMGFMT_YUY2)
sh_video->o_bih.biBitCount=16;
else
sh_video->o_bih.biBitCount=outfmt&0xFF;// //24;
sh_video->o_bih.biSizeImage=sh_video->o_bih.biWidth*sh_video->o_bih.biHeight*(sh_video->o_bih.biBitCount/8);
if(!avi_header.flipped)
sh_video->o_bih.biHeight=-sh_video->bih.biHeight; // flip image!
if(outfmt==IMGFMT_YUY2 && !avi_header.yuv_hack_needed)
sh_video->o_bih.biCompression = mmioFOURCC('Y','U','Y','2');
// sh_video->o_bih.biCompression = mmioFOURCC('U','Y','V','Y');
if(verbose) {
printf("Starting decompression, format:\n");
printf(" biSize %d\n", sh_video->bih.biSize);
printf(" biWidth %d\n", sh_video->bih.biWidth);
printf(" biHeight %d\n", sh_video->bih.biHeight);
printf(" biPlanes %d\n", sh_video->bih.biPlanes);
printf(" biBitCount %d\n", sh_video->bih.biBitCount);
printf(" biCompression %d='%.4s'\n", sh_video->bih.biCompression, &sh_video->bih.biCompression);
printf(" biSizeImage %d\n", sh_video->bih.biSizeImage);
printf("Dest fmt:\n");
printf(" biSize %d\n", sh_video->o_bih.biSize);
printf(" biWidth %d\n", sh_video->o_bih.biWidth);
printf(" biHeight %d\n", sh_video->o_bih.biHeight);
printf(" biPlanes %d\n", sh_video->o_bih.biPlanes);
printf(" biBitCount %d\n", sh_video->o_bih.biBitCount);
printf(" biCompression %d='%.4s'\n", sh_video->o_bih.biCompression, &sh_video->o_bih.biCompression);
printf(" biSizeImage %d\n", sh_video->o_bih.biSizeImage);
}
ret = ICDecompressQuery(sh_video->hic, &sh_video->bih, &sh_video->o_bih);
if(ret){
printf("ICDecompressQuery failed: Error %d\n", ret);
return 0;
}
if(verbose) printf("ICDecompressQuery OK\n");
ret = ICDecompressBegin(sh_video->hic, &sh_video->bih, &sh_video->o_bih);
if(ret){
printf("ICDecompressBegin failed: Error %d\n", ret);
return 0;
}
#if 0
//sh_video->hic
//ICSendMessage(HIC hic,unsigned int msg,long lParam1,long lParam2)
{ int i;
for(i=73;i<256;i++){
printf("Calling ICM_USER+%d function...",i);fflush(stdout);
ret = ICSendMessage(sh_video->hic,ICM_USER+i,NULL,NULL);
printf(" ret=%d\n",ret);
}
}
#endif
sh_video->our_out_buffer = malloc(sh_video->o_bih.biSizeImage);
if(!sh_video->our_out_buffer){
printf("not enough memory for decoded picture buffer (%d bytes)\n", sh_video->o_bih.biSizeImage);
return 0;
}
if(outfmt==IMGFMT_YUY2 && avi_header.yuv_hack_needed)
sh_video->o_bih.biCompression = mmioFOURCC('Y','U','Y','2');
// avi_header.our_in_buffer=malloc(avi_header.video.dwSuggestedBufferSize); // FIXME!!!!
if(verbose) printf("VIDEO CODEC Init OK!!! ;-)\n");
return 1;
}
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