1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* probe_sunau.c
*
* Copyright (C) Jacob Meuser - December 2004
*
* This file is part of transcode, a video stream processing tool
*
* transcode is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* transcode is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "transcode.h"
#include "tcinfo.h"
#include "ioaux.h"
#include "tc.h"
#include "libtc/libtc.h"
#ifdef HAVE_OSS
#include <sys/types.h>
#include <sys/ioctl.h>
#ifdef HAVE_SYS_SOUNDCARD_H
# include <sys/soundcard.h>
#else
# ifdef HAVE_SOUNDCARD_H
# include <soundcard.h>
# endif
#endif
void
probe_oss(info_t * ipipe)
{
int encodings;
int encoding;
int precision;
int channels;
int sample_rate;
close(ipipe->fd_in);
ipipe->fd_in = open(ipipe->name, O_RDONLY, 0);
if (ipipe->fd_in < 0) {
tc_log_error(__FILE__, "cannot (re)open device: %s", strerror(errno));
goto error;
}
/* try tc's defaults */
encoding = AFMT_S16_LE;
precision = 16;
channels = 2;
sample_rate = 48000;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_GETFMTS, &encodings) < 0) {
tc_log_perror(__FILE__, "SNDCTL_DSP_SETFMT");
goto error;
}
if (encodings & AFMT_S16_LE) {
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SETFMT, &encoding) < 0) {
if (encodings & AFMT_U8) {
encoding = AFMT_U8;
precision = 8;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SETFMT, &encoding) < 0) {
tc_log_perror(__FILE__, "SNDCTL_DSP_SETFMT");
goto error;
}
}
}
}
if (ioctl(ipipe->fd_in, SNDCTL_DSP_CHANNELS, &channels) < 0) {
tc_log_perror(__FILE__, "SNDCTL_DSP_CHANNELS");
goto error;
}
if (ipipe->verbose & TC_DEBUG)
tc_log_msg(__FILE__, "checking for valid samplerate...");
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
sample_rate = 44100;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
sample_rate = 32000;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
sample_rate = 22050;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
sample_rate = 24000;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
sample_rate = 16000;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
sample_rate = 11025;
if (ioctl(ipipe->fd_in, SNDCTL_DSP_SPEED, &sample_rate) < 0) {
if (ipipe->verbose & TC_DEBUG)
tc_log_msg(__FILE__, "... not found");
goto error;
}
}
}
}
}
}
}
if (ipipe->verbose & TC_DEBUG)
tc_log_msg(__FILE__, "... found %d", sample_rate);
ipipe->probe_info->track[0].bits = precision;
ipipe->probe_info->track[0].chan = channels;
ipipe->probe_info->track[0].samplerate = sample_rate;
ipipe->probe_info->track[0].format = 0x1;
if (ipipe->probe_info->track[0].chan > 0)
ipipe->probe_info->num_tracks = 1;
ipipe->probe_info->magic = TC_MAGIC_OSS_AUDIO;
ipipe->probe_info->codec = TC_CODEC_PCM;
return;
error:
ipipe->error = 1;
ipipe->probe_info->codec = TC_CODEC_UNKNOWN;
ipipe->probe_info->magic = TC_MAGIC_UNKNOWN;
return;
}
#else /* HAVE_OSS */
void
probe_oss(info_t * ipipe)
{
tc_log_error(__FILE__, "No support for oss compiled in");
ipipe->probe_info->codec = TC_CODEC_UNKNOWN;
ipipe->probe_info->magic = TC_MAGIC_UNKNOWN;
}
#endif
|
