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Viewing changes to libmpcodecs/ad_dshow.c

  • Committer: Reinhard Tartler
  • Date: 2006-07-08 08:45:33 UTC
  • Revision ID: siretart@tauware.de-20060708084533-dbc155bde7122e78
imported mplayer_0.99+1.0pre7try2+cvs20060117

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libmpcodecs/ad_dshow.c
 
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#include <stdio.h>
 
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#include <stdlib.h>
 
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#include <unistd.h>
 
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#include "config.h"
 
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#include "mp_msg.h"
 
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#include "help_mp.h"
 
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#ifdef USE_DIRECTSHOW
 
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#include "ad_internal.h"
 
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static ad_info_t info = 
 
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{
 
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        "Win32/DirectShow decoders",
 
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        "dshow",
 
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        "Nick Kurshev",
 
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        "avifile.sf.net",
 
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        ""
 
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};
 
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LIBAD_EXTERN(dshow)
 
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#include "dshow/DS_AudioDecoder.h"
 
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static int init(sh_audio_t *sh)
 
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{
 
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  return 1;
 
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}
 
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static int preinit(sh_audio_t *sh_audio)
 
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{
 
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  DS_AudioDecoder* ds_adec;
 
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  if(!(ds_adec=DS_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf)))
 
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  {
 
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    mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingDLLcodec,sh_audio->codec->dll);
 
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    return 0;
 
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  }
 
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    sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
 
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    sh_audio->channels=sh_audio->wf->nChannels;
 
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    sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
 
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    sh_audio->samplesize=2;
 
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    sh_audio->audio_in_minsize=2*sh_audio->wf->nBlockAlign;
 
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    if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
 
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    sh_audio->audio_out_minsize=16384;
 
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    sh_audio->context = ds_adec;
 
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  mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DShow audio codec init OK!\n");
 
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  return 1;
 
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}
 
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static void uninit(sh_audio_t *sh)
 
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{
 
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    DS_AudioDecoder* ds_adec = sh->context;
 
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    DS_AudioDecoder_Destroy(ds_adec);
 
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}
 
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static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
 
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{
 
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  int skip;
 
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    switch(cmd)
 
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    {
 
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      case ADCTRL_SKIP_FRAME:
 
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                    skip=sh_audio->wf->nBlockAlign;
 
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                    if(skip<16){
 
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                      skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
 
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                      if(skip<16) skip=16;
 
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                    }
 
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                    demux_read_data(sh_audio->ds,NULL,skip);
 
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          return CONTROL_TRUE;
 
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    }
 
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  return CONTROL_UNKNOWN;
 
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}
 
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static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
 
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{
 
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        DS_AudioDecoder* ds_adec = sh_audio->context;
 
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//      int len=-1;
 
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        int size_in=0;
 
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        int size_out=0;
 
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        int srcsize=DS_AudioDecoder_GetSrcSize(ds_adec, maxlen);
 
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        mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DShow says: srcsize=%d  (buffsize=%d)  out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
 
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        if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
 
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        if(sh_audio->a_in_buffer_len<srcsize){
 
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          sh_audio->a_in_buffer_len+=
 
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            demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
 
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            srcsize-sh_audio->a_in_buffer_len);
 
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        }
 
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        DS_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
 
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            buf,maxlen, &size_in,&size_out);
 
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        mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DShow: audio %d -> %d converted  (in_buf_len=%d of %d)  %d\n",size_in,size_out,sh_audio->a_in_buffer_len,sh_audio->a_in_buffer_size,ds_tell_pts(sh_audio->ds));
 
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        if(size_in>=sh_audio->a_in_buffer_len){
 
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          sh_audio->a_in_buffer_len=0;
 
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        } else {
 
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          sh_audio->a_in_buffer_len-=size_in;
 
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          memcpy(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
 
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        }
 
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//        len=size_out;
 
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  return size_out;
 
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}
 
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#endif