1 /*
2 * Linux audio grab interface
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23
24 #if HAVE_UNISTD_H
25 #include <unistd.h>
26 #endif
27 #include <fcntl.h>
28 #include <sys/ioctl.h>
29 #include <sys/soundcard.h>
30
32
35
37
39 {
43
50 } else {
51 return 0;
52 }
53 }
54
56 {
61
64 memcpy(
s->buffer +
s->buffer_ptr, buf,
len);
67 for(;;) {
70 break;
71 if (
ret < 0 && (errno != EAGAIN && errno != EINTR))
73 }
75 }
78 }
79 return 0;
80 }
81
83 {
85
87 return 0;
88 }
89
95 };
96
101 /* XXX: we make the assumption that the soundcard accepts this format */
102 /* XXX: find better solution with "preinit" method, needed also in
103 other formats */
111 };