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 "dec_audio.h"
29 #include "libaf/reorder_ch.h"
30
31 static const ad_info_t info =
32 {
33 "Win32/DMO decoders",
34 "dmo",
35 "A'rpi",
36 "avifile.sf.net",
37 ""
38 };
39
LIBAD_EXTERN(dmo)40 LIBAD_EXTERN(dmo)
41
42 #include "loader/dmo/DMO_AudioDecoder.h"
43
44 static int init(sh_audio_t *sh)
45 {
46 return 1;
47 }
48
preinit(sh_audio_t * sh_audio)49 static int preinit(sh_audio_t *sh_audio)
50 {
51 DMO_AudioDecoder* ds_adec;
52 int chans=(audio_output_channels==sh_audio->wf->nChannels) ?
53 audio_output_channels : (sh_audio->wf->nChannels>=2 ? 2 : 1);
54 if(!(ds_adec=DMO_AudioDecoder_Open(codec_idx2str(sh_audio->codec->dll_idx),&sh_audio->codec->guid,sh_audio->wf,chans)))
55 {
56 mp_msg(MSGT_DECAUDIO,MSGL_ERR,MSGTR_MissingDLLcodec,codec_idx2str(sh_audio->codec->dll_idx));
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
uninit(sh_audio_t * sh)71 static void uninit(sh_audio_t *sh)
72 {
73 DMO_AudioDecoder* ds_adec = sh->context;
74 DMO_AudioDecoder_Destroy(ds_adec);
75 }
76
control(sh_audio_t * sh_audio,int cmd,void * arg,...)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
decode_audio(sh_audio_t * sh_audio,unsigned char * buf,int minlen,int maxlen)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 }
127