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.
24 #include <string.h> /* strerror */
27 #include <sys/ioctl.h>
29 #ifdef HAVE_SYS_SOUNDCARD_H
30 #include <sys/soundcard.h>
32 #ifdef HAVE_SOUNDCARD_H
33 #include <soundcard.h>
35 #include <linux/soundcard.h>
43 int ai_oss_set_samplerate(audio_in_t
*ai
)
45 int tmp
= ai
->req_samplerate
;
46 if (ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_SPEED
, &tmp
) == -1) return -1;
51 int ai_oss_set_channels(audio_in_t
*ai
)
56 if (ai
->req_channels
> 2)
58 ioctl_param
= ai
->req_channels
;
59 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp channels: %d\n",
60 err
= ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_CHANNELS
, &ioctl_param
));
62 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2SetChanCount
,
66 ai
->channels
= ioctl_param
;
70 ioctl_param
= (ai
->req_channels
== 2);
71 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp stereo: %d (req: %d)\n",
72 err
= ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_STEREO
, &ioctl_param
),
75 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2SetStereo
,
76 ai
->req_channels
== 2);
79 ai
->channels
= ioctl_param
? 2 : 1;
84 int ai_oss_init(audio_in_t
*ai
)
89 ai
->oss
.audio_fd
= open(ai
->oss
.device
, O_RDONLY
);
90 if (ai
->oss
.audio_fd
< 0)
92 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2Open
,
93 ai
->oss
.device
, strerror(errno
));
98 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp getfmt: %d\n",
99 ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_GETFMTS
, &ioctl_param
));
101 mp_msg(MSGT_TV
, MSGL_V
, "Supported formats: %x\n", ioctl_param
);
102 if (!(ioctl_param
& AFMT_S16_LE
))
103 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_UnsupportedFmt
);
105 ioctl_param
= AFMT_S16_LE
;
106 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp setfmt: %d\n",
107 err
= ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_SETFMT
, &ioctl_param
));
109 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2SetAudioFmt
);
113 if (ai_oss_set_channels(ai
) < 0) return -1;
115 ioctl_param
= ai
->req_samplerate
;
116 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp speed: %d\n",
117 err
= ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_SPEED
, &ioctl_param
));
119 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2SetSamplerate
,
123 ai
->samplerate
= ioctl_param
;
125 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp trigger: %d\n",
126 ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_GETTRIGGER
, &ioctl_param
));
127 mp_msg(MSGT_TV
, MSGL_V
, "trigger: %x\n", ioctl_param
);
128 ioctl_param
= PCM_ENABLE_INPUT
;
129 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp trigger: %d\n",
130 err
= ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_SETTRIGGER
, &ioctl_param
));
132 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2SetTrigger
,
137 mp_msg(MSGT_TV
, MSGL_V
, "ioctl dsp getblocksize: %d\n",
138 err
= ioctl(ai
->oss
.audio_fd
, SNDCTL_DSP_GETBLKSIZE
, &ai
->blocksize
));
140 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_Unable2GetBlockSize
);
142 mp_msg(MSGT_TV
, MSGL_V
, "blocksize: %d\n", ai
->blocksize
);
144 // correct the blocksize to a reasonable value
145 if (ai
->blocksize
<= 0) {
146 ai
->blocksize
= 4096*ai
->channels
*2;
147 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_AudioBlockSizeZero
, ai
->blocksize
);
148 } else if (ai
->blocksize
< 4096*ai
->channels
*2) {
149 ai
->blocksize
*= 4096*ai
->channels
*2/ai
->blocksize
;
150 mp_msg(MSGT_TV
, MSGL_ERR
, MSGTR_MPDEMUX_AIOSS_AudioBlockSize2Low
, ai
->blocksize
);
154 ai
->bytes_per_sample
= 2;