mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-12 18:25:03 +00:00
a6703faa15
Deprecate av_get_bits_per_sample_fmt(), which was a misnamed function. For the moment we don't have sample formats with a non-integer number of bytes, in that case we may need to create a new av_get_bits_per_sample() function. In the meanwhile we prefer to adopt this variant, since avoids divisions by 8 all over the place.
82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
/*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "samplefmt.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
typedef struct SampleFmtInfo {
|
|
const char *name;
|
|
int bits;
|
|
} SampleFmtInfo;
|
|
|
|
/** this table gives more information about formats */
|
|
static const SampleFmtInfo sample_fmt_info[AV_SAMPLE_FMT_NB] = {
|
|
[AV_SAMPLE_FMT_U8] = { .name = "u8", .bits = 8 },
|
|
[AV_SAMPLE_FMT_S16] = { .name = "s16", .bits = 16 },
|
|
[AV_SAMPLE_FMT_S32] = { .name = "s32", .bits = 32 },
|
|
[AV_SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32 },
|
|
[AV_SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64 },
|
|
};
|
|
|
|
const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
|
|
{
|
|
if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
|
|
return NULL;
|
|
return sample_fmt_info[sample_fmt].name;
|
|
}
|
|
|
|
enum AVSampleFormat av_get_sample_fmt(const char *name)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < AV_SAMPLE_FMT_NB; i++)
|
|
if (!strcmp(sample_fmt_info[i].name, name))
|
|
return i;
|
|
return AV_SAMPLE_FMT_NONE;
|
|
}
|
|
|
|
char *av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt)
|
|
{
|
|
/* print header */
|
|
if (sample_fmt < 0)
|
|
snprintf(buf, buf_size, "name " " depth");
|
|
else if (sample_fmt < AV_SAMPLE_FMT_NB) {
|
|
SampleFmtInfo info = sample_fmt_info[sample_fmt];
|
|
snprintf (buf, buf_size, "%-6s" " %2d ", info.name, info.bits);
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
|
|
{
|
|
return sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB ?
|
|
0 : sample_fmt_info[sample_fmt].bits >> 3;
|
|
}
|
|
|
|
#if FF_API_GET_BITS_PER_SAMPLE_FMT
|
|
int av_get_bits_per_sample_fmt(enum AVSampleFormat sample_fmt)
|
|
{
|
|
return sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB ?
|
|
0 : sample_fmt_info[sample_fmt].bits;
|
|
}
|
|
#endif
|