2 * This file is part of MPlayer.
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.
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.
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.
27 #include "ad_internal.h"
29 static const ad_info_t info
=
31 "Win32/DirectShow decoders",
40 #include "loader/dshow/DS_AudioDecoder.h"
42 static int init(sh_audio_t
*sh
)
47 static int preinit(sh_audio_t
*sh_audio
)
49 DS_AudioDecoder
* ds_adec
;
50 if(!(ds_adec
=DS_AudioDecoder_Open(sh_audio
->codec
->dll
,&sh_audio
->codec
->guid
,sh_audio
->wf
)))
52 mp_tmsg(MSGT_DECAUDIO
,MSGL_ERR
,"ERROR: Could not open required DirectShow codec %s.\n",sh_audio
->codec
->dll
);
55 sh_audio
->i_bps
=sh_audio
->wf
->nAvgBytesPerSec
;
56 sh_audio
->channels
=sh_audio
->wf
->nChannels
;
57 sh_audio
->samplerate
=sh_audio
->wf
->nSamplesPerSec
;
58 sh_audio
->samplesize
=2;
59 sh_audio
->audio_in_minsize
=2*sh_audio
->wf
->nBlockAlign
;
60 if(sh_audio
->audio_in_minsize
<8192) sh_audio
->audio_in_minsize
=8192;
61 sh_audio
->audio_out_minsize
=16384;
62 sh_audio
->context
= ds_adec
;
63 mp_msg(MSGT_DECVIDEO
,MSGL_V
,"INFO: Win32/DShow audio codec init OK!\n");
67 static void uninit(sh_audio_t
*sh
)
69 DS_AudioDecoder
* ds_adec
= sh
->context
;
70 DS_AudioDecoder_Destroy(ds_adec
);
73 static int control(sh_audio_t
*sh_audio
,int cmd
,void* arg
, ...)
78 case ADCTRL_SKIP_FRAME
:
79 skip
=sh_audio
->wf
->nBlockAlign
;
81 skip
=(sh_audio
->wf
->nAvgBytesPerSec
/16)&(~7);
84 demux_read_data(sh_audio
->ds
,NULL
,skip
);
87 return CONTROL_UNKNOWN
;
90 static int decode_audio(sh_audio_t
*sh_audio
,unsigned char *buf
,int minlen
,int maxlen
)
92 DS_AudioDecoder
* ds_adec
= sh_audio
->context
;
96 int srcsize
=DS_AudioDecoder_GetSrcSize(ds_adec
, maxlen
);
97 mp_msg(MSGT_DECAUDIO
,MSGL_DBG3
,"DShow says: srcsize=%d (buffsize=%d) out_size=%d\n",srcsize
,sh_audio
->a_in_buffer_size
,maxlen
);
98 if(srcsize
>sh_audio
->a_in_buffer_size
) srcsize
=sh_audio
->a_in_buffer_size
; // !!!!!!
99 if(sh_audio
->a_in_buffer_len
<srcsize
){
100 sh_audio
->a_in_buffer_len
+=
101 demux_read_data(sh_audio
->ds
,&sh_audio
->a_in_buffer
[sh_audio
->a_in_buffer_len
],
102 srcsize
-sh_audio
->a_in_buffer_len
);
104 DS_AudioDecoder_Convert(ds_adec
, sh_audio
->a_in_buffer
,sh_audio
->a_in_buffer_len
,
105 buf
,maxlen
, &size_in
,&size_out
);
106 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
));
107 if(size_in
>=sh_audio
->a_in_buffer_len
){
108 sh_audio
->a_in_buffer_len
=0;
110 sh_audio
->a_in_buffer_len
-=size_in
;
111 memcpy(sh_audio
->a_in_buffer
,&sh_audio
->a_in_buffer
[size_in
],sh_audio
->a_in_buffer_len
);