6
#if defined(USE_TV) && (defined(HAVE_TV_V4L) || defined(HAVE_TV_V4L2)) && defined(USE_OSS_AUDIO)
8
#include <string.h> /* strerror */
11
#include <sys/ioctl.h>
13
#ifdef HAVE_SYS_SOUNDCARD_H
14
#include <sys/soundcard.h>
16
#ifdef HAVE_SOUNDCARD_H
17
#include <soundcard.h>
19
#include <linux/soundcard.h>
27
int ai_oss_set_samplerate(audio_in_t *ai)
29
int tmp = ai->req_samplerate;
30
if (ioctl(ai->oss.audio_fd, SNDCTL_DSP_SPEED, &tmp) == -1) return -1;
35
int ai_oss_set_channels(audio_in_t *ai)
40
if (ai->req_channels > 2)
42
ioctl_param = ai->req_channels;
43
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp channels: %d\n",
44
err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_CHANNELS, &ioctl_param));
46
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2SetChanCount,
50
ai->channels = ioctl_param;
54
ioctl_param = (ai->req_channels == 2);
55
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp stereo: %d (req: %d)\n",
56
err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_STEREO, &ioctl_param),
59
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2SetStereo,
60
ai->req_channels == 2);
63
ai->channels = ioctl_param ? 2 : 1;
68
int ai_oss_init(audio_in_t *ai)
73
ai->oss.audio_fd = open(ai->oss.device, O_RDONLY);
74
if (ai->oss.audio_fd < 0)
76
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2Open,
77
ai->oss.device, strerror(errno));
82
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp getfmt: %d\n",
83
ioctl(ai->oss.audio_fd, SNDCTL_DSP_GETFMTS, &ioctl_param));
85
mp_msg(MSGT_TV, MSGL_V, "Supported formats: %x\n", ioctl_param);
86
if (!(ioctl_param & AFMT_S16_LE))
87
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_UnsupportedFmt);
89
ioctl_param = AFMT_S16_LE;
90
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp setfmt: %d\n",
91
err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_SETFMT, &ioctl_param));
93
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2SetAudioFmt);
97
if (ai_oss_set_channels(ai) < 0) return -1;
99
ioctl_param = ai->req_samplerate;
100
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp speed: %d\n",
101
err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_SPEED, &ioctl_param));
103
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2SetSamplerate,
107
ai->samplerate = ioctl_param;
109
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp trigger: %d\n",
110
ioctl(ai->oss.audio_fd, SNDCTL_DSP_GETTRIGGER, &ioctl_param));
111
mp_msg(MSGT_TV, MSGL_V, "trigger: %x\n", ioctl_param);
112
ioctl_param = PCM_ENABLE_INPUT;
113
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp trigger: %d\n",
114
err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_SETTRIGGER, &ioctl_param));
116
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2SetTrigger,
121
mp_msg(MSGT_TV, MSGL_V, "ioctl dsp getblocksize: %d\n",
122
err = ioctl(ai->oss.audio_fd, SNDCTL_DSP_GETBLKSIZE, &ai->blocksize));
124
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_Unable2GetBlockSize);
126
mp_msg(MSGT_TV, MSGL_V, "blocksize: %d\n", ai->blocksize);
128
// correct the blocksize to a reasonable value
129
if (ai->blocksize <= 0) {
130
ai->blocksize = 4096*ai->channels*2;
131
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_AudioBlockSizeZero, ai->blocksize);
132
} else if (ai->blocksize < 4096*ai->channels*2) {
133
ai->blocksize *= 4096*ai->channels*2/ai->blocksize;
134
mp_msg(MSGT_TV, MSGL_ERR, MSGTR_MPDEMUX_AIOSS_AudioBlockSize2Low, ai->blocksize);
138
ai->bytes_per_sample = 2;
143
#endif /* USE_OSS_AUDIO */