Implement functions:
[libav.git] / libavcore / samplefmt.c
CommitLineData
d63e456a
SS
1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg 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 GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include "avcore.h"
20#include "samplefmt.h"
21
22typedef struct SampleFmtInfo {
23 const char *name;
24 int bits;
25} SampleFmtInfo;
26
27/** this table gives more information about formats */
28static const SampleFmtInfo sample_fmt_info[AV_SAMPLE_FMT_NB] = {
29 [AV_SAMPLE_FMT_U8] = { .name = "u8", .bits = 8 },
30 [AV_SAMPLE_FMT_S16] = { .name = "s16", .bits = 16 },
31 [AV_SAMPLE_FMT_S32] = { .name = "s32", .bits = 32 },
32 [AV_SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32 },
33 [AV_SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64 },
34};
35
36const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
37{
38 if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
39 return NULL;
40 return sample_fmt_info[sample_fmt].name;
41}
42
43enum AVSampleFormat av_get_sample_fmt(const char *name)
44{
45 int i;
46
47 for (i = 0; i < AV_SAMPLE_FMT_NB; i++)
48 if (!strcmp(sample_fmt_info[i].name, name))
49 return i;
50 return AV_SAMPLE_FMT_NONE;
51}
52
53char *av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt)
54{
55 /* print header */
56 if (sample_fmt < 0)
57 snprintf(buf, buf_size, "name " " depth");
58 else if (sample_fmt < AV_SAMPLE_FMT_NB) {
59 SampleFmtInfo info = sample_fmt_info[sample_fmt];
60 snprintf (buf, buf_size, "%-6s" " %2d ", info.name, info.bits);
61 }
62
63 return buf;
64}