libmpcodecs/ad_dmo.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4
   5 #include "config.h"
   6 #include "mp_msg.h"
   7 #include "help_mp.h"
   8
   9 #include "ad_internal.h"
  10 #include "libaf/reorder_ch.h"
  11
  12 static const ad_info_t info =
  13 {
  14         "Win32/DMO decoders",
  15         "dmo",
  16         "A'rpi",
  17         "avifile.sf.net",
  18         ""
  19 };
  20
  21 LIBAD_EXTERN(dmo)
  22
  23 #include "loader/dmo/DMO_AudioDecoder.h"
  24
  25 static int init(sh_audio_t *sh)
  26 {
  27   return 1;
  28 }
  29
  30 static int preinit(sh_audio_t *sh_audio)
  31 {
  32   DMO_AudioDecoder* ds_adec;
  33   int chans=(audio_output_channels==sh_audio->wf->nChannels) ?
  34       audio_output_channels : (sh_audio->wf->nChannels>=2 ? 2 : 1);
  35   if(!(ds_adec=DMO_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf,chans)))
  36   {
  37     mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingDLLcodec,sh_audio->codec->dll);
  38     return 0;
  39   }
  40     sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
  41     sh_audio->channels=chans;
  42     sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
  43     sh_audio->samplesize=2;
  44     sh_audio->audio_in_minsize=4*sh_audio->wf->nBlockAlign;
  45     if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
  46     sh_audio->audio_out_minsize=4*16384;
  47     sh_audio->context = ds_adec;
  48   mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DMO audio codec init OK!\n");
  49   return 1;
  50 }
  51
  52 static void uninit(sh_audio_t *sh)
  53 {
  54     DMO_AudioDecoder* ds_adec = sh->context;
  55     DMO_AudioDecoder_Destroy(ds_adec);
  56 }
  57
  58 static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
  59 {
  60   int skip;
  61     switch(cmd)
  62     {
  63       case ADCTRL_SKIP_FRAME:
  64                     skip=sh_audio->wf->nBlockAlign;
  65                     if(skip<16){
  66                       skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
  67                       if(skip<16) skip=16;
  68                     }
  69                     demux_read_data(sh_audio->ds,NULL,skip);
  70           return CONTROL_TRUE;
  71     }
  72   return CONTROL_UNKNOWN;
  73 }
  74
  75 static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
  76 {
  77         DMO_AudioDecoder* ds_adec = sh_audio->context;
  78 //      int len=-1;
  79         int size_in=0;
  80         int size_out=0;
  81         int srcsize=DMO_AudioDecoder_GetSrcSize(ds_adec, maxlen);
  82         mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DMO says: srcsize=%d  (buffsize=%d)  out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
  83         if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
  84         if(sh_audio->a_in_buffer_len<srcsize){
  85           sh_audio->a_in_buffer_len+=
  86             demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
  87             srcsize-sh_audio->a_in_buffer_len);
  88         }
  89         DMO_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
  90             buf,maxlen, &size_in,&size_out);
  91         mp_dbg(MSGT_DECAUDIO,MSGL_DBG2,"DMO: 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));
  92         if(size_in>=sh_audio->a_in_buffer_len){
  93           sh_audio->a_in_buffer_len=0;
  94         } else {
  95           sh_audio->a_in_buffer_len-=size_in;
  96           memmove(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
  97         }
  98         if (size_out > 0 && sh_audio->channels >= 5) {
  99           reorder_channel_nch(buf, AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT,
 100                               AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT,
 101                               sh_audio->channels,
 102                               size_out / sh_audio->samplesize,
 103                               sh_audio->samplesize);
 104         }
 105 //        len=size_out;
 106   return size_out;
 107 }