libmpcodecs/ad_dmo.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22
  23 #include "config.h"
  24 #include "options.h"
  25 #include "mp_msg.h"
  26
  27 #include "ad_internal.h"
  28 #include "libaf/reorder_ch.h"
  29
  30 static const ad_info_t info =
  31 {
  32         "Win32/DMO decoders",
  33         "dmo",
  34         "A'rpi",
  35         "avifile.sf.net",
  36         ""
  37 };
  38
  39 LIBAD_EXTERN(dmo)
  40
  41 #include "loader/dmo/DMO_AudioDecoder.h"
  42
  43 static int init(sh_audio_t *sh)
  44 {
  45   return 1;
  46 }
  47
  48 static int preinit(sh_audio_t *sh_audio)
  49 {
  50   struct MPOpts *opts = sh_audio->opts;
  51   DMO_AudioDecoder* ds_adec;
  52   int chans=(opts->audio_output_channels==sh_audio->wf->nChannels) ?
  53       opts->audio_output_channels : (sh_audio->wf->nChannels>=2 ? 2 : 1);
  54   if(!(ds_adec=DMO_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf,chans)))
  55   {
  56     mp_tmsg(MSGT_DECAUDIO,MSGL_ERR,"ERROR: Could not open required DirectShow codec %s.\n",sh_audio->codec->dll);
  57     return 0;
  58   }
  59     sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
  60     sh_audio->channels=chans;
  61     sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
  62     sh_audio->samplesize=2;
  63     sh_audio->audio_in_minsize=4*sh_audio->wf->nBlockAlign;
  64     if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
  65     sh_audio->audio_out_minsize=4*16384;
  66     sh_audio->context = ds_adec;
  67   mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DMO audio codec init OK!\n");
  68   return 1;
  69 }
  70
  71 static void uninit(sh_audio_t *sh)
  72 {
  73     DMO_AudioDecoder* ds_adec = sh->context;
  74     DMO_AudioDecoder_Destroy(ds_adec);
  75 }
  76
  77 static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
  78 {
  79   int skip;
  80     switch(cmd)
  81     {
  82       case ADCTRL_SKIP_FRAME:
  83                     skip=sh_audio->wf->nBlockAlign;
  84                     if(skip<16){
  85                       skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
  86                       if(skip<16) skip=16;
  87                     }
  88                     demux_read_data(sh_audio->ds,NULL,skip);
  89           return CONTROL_TRUE;
  90     }
  91   return CONTROL_UNKNOWN;
  92 }
  93
  94 static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
  95 {
  96         DMO_AudioDecoder* ds_adec = sh_audio->context;
  97 //      int len=-1;
  98         int size_in=0;
  99         int size_out=0;
 100         int srcsize=DMO_AudioDecoder_GetSrcSize(ds_adec, maxlen);
 101         mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DMO says: srcsize=%d  (buffsize=%d)  out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
 102         if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
 103         if(sh_audio->a_in_buffer_len<srcsize){
 104           sh_audio->a_in_buffer_len+=
 105             demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
 106             srcsize-sh_audio->a_in_buffer_len);
 107         }
 108         DMO_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
 109             buf,maxlen, &size_in,&size_out);
 110         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));
 111         if(size_in>=sh_audio->a_in_buffer_len){
 112           sh_audio->a_in_buffer_len=0;
 113         } else {
 114           sh_audio->a_in_buffer_len-=size_in;
 115           memmove(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
 116         }
 117         if (size_out > 0 && sh_audio->channels >= 5) {
 118           reorder_channel_nch(buf, AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT,
 119                               AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT,
 120                               sh_audio->channels,
 121                               size_out / sh_audio->samplesize,
 122                               sh_audio->samplesize);
 123         }
 124 //        len=size_out;
 125   return size_out;
 126 }