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 "mp_msg.h"
  25 #include "help_mp.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   DMO_AudioDecoder* ds_adec;
  51   int chans=(audio_output_channels==sh_audio->wf->nChannels) ?
  52       audio_output_channels : (sh_audio->wf->nChannels>=2 ? 2 : 1);
  53   if(!(ds_adec=DMO_AudioDecoder_Open(sh_audio->codec->dll,&sh_audio->codec->guid,sh_audio->wf,chans)))
  54   {
  55     mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingDLLcodec,sh_audio->codec->dll);
  56     return 0;
  57   }
  58     sh_audio->i_bps=sh_audio->wf->nAvgBytesPerSec;
  59     sh_audio->channels=chans;
  60     sh_audio->samplerate=sh_audio->wf->nSamplesPerSec;
  61     sh_audio->samplesize=2;
  62     sh_audio->audio_in_minsize=4*sh_audio->wf->nBlockAlign;
  63     if(sh_audio->audio_in_minsize<8192) sh_audio->audio_in_minsize=8192;
  64     sh_audio->audio_out_minsize=4*16384;
  65     sh_audio->context = ds_adec;
  66   mp_msg(MSGT_DECVIDEO,MSGL_V,"INFO: Win32/DMO audio codec init OK!\n");
  67   return 1;
  68 }
  69
  70 static void uninit(sh_audio_t *sh)
  71 {
  72     DMO_AudioDecoder* ds_adec = sh->context;
  73     DMO_AudioDecoder_Destroy(ds_adec);
  74 }
  75
  76 static int control(sh_audio_t *sh_audio,int cmd,void* arg, ...)
  77 {
  78   int skip;
  79     switch(cmd)
  80     {
  81       case ADCTRL_SKIP_FRAME:
  82                     skip=sh_audio->wf->nBlockAlign;
  83                     if(skip<16){
  84                       skip=(sh_audio->wf->nAvgBytesPerSec/16)&(~7);
  85                       if(skip<16) skip=16;
  86                     }
  87                     demux_read_data(sh_audio->ds,NULL,skip);
  88           return CONTROL_TRUE;
  89     }
  90   return CONTROL_UNKNOWN;
  91 }
  92
  93 static int decode_audio(sh_audio_t *sh_audio,unsigned char *buf,int minlen,int maxlen)
  94 {
  95         DMO_AudioDecoder* ds_adec = sh_audio->context;
  96 //      int len=-1;
  97         int size_in=0;
  98         int size_out=0;
  99         int srcsize=DMO_AudioDecoder_GetSrcSize(ds_adec, maxlen);
 100         mp_msg(MSGT_DECAUDIO,MSGL_DBG3,"DMO says: srcsize=%d  (buffsize=%d)  out_size=%d\n",srcsize,sh_audio->a_in_buffer_size,maxlen);
 101         if(srcsize>sh_audio->a_in_buffer_size) srcsize=sh_audio->a_in_buffer_size; // !!!!!!
 102         if(sh_audio->a_in_buffer_len<srcsize){
 103           sh_audio->a_in_buffer_len+=
 104             demux_read_data(sh_audio->ds,&sh_audio->a_in_buffer[sh_audio->a_in_buffer_len],
 105             srcsize-sh_audio->a_in_buffer_len);
 106         }
 107         DMO_AudioDecoder_Convert(ds_adec, sh_audio->a_in_buffer,sh_audio->a_in_buffer_len,
 108             buf,maxlen, &size_in,&size_out);
 109         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));
 110         if(size_in>=sh_audio->a_in_buffer_len){
 111           sh_audio->a_in_buffer_len=0;
 112         } else {
 113           sh_audio->a_in_buffer_len-=size_in;
 114           memmove(sh_audio->a_in_buffer,&sh_audio->a_in_buffer[size_in],sh_audio->a_in_buffer_len);
 115         }
 116         if (size_out > 0 && sh_audio->channels >= 5) {
 117           reorder_channel_nch(buf, AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT,
 118                               AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT,
 119                               sh_audio->channels,
 120                               size_out / sh_audio->samplesize,
 121                               sh_audio->samplesize);
 122         }
 123 //        len=size_out;
 124   return size_out;
 125 }