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lavu: add av_get_alt_sample_fmt().

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This commit is contained in:
Clément Bœsch 2011-11-24 04:30:09 +01:00
parent afb0470a25
commit 573ffbb3b5
4 changed files with 32 additions and 11 deletions
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3
doc/APIchanges
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@ -13,6 +13,9 @@ libavutil: 2011-04-18
API changes, most recent first:
2011-xx-xx - xxxxxxx - lavu 51.28.1
Add av_get_alt_sample_fmt() to samplefmt.h.
2011-11-03 - 96949da - lavu 51.23.0
Add av_strcasecmp() and av_strncasecmp() to avstring.h.

2
libavutil/avutil.h
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@ -153,7 +153,7 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 51
#define LIBAVUTIL_VERSION_MINOR 27
#define LIBAVUTIL_VERSION_MINOR 28
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \

30
libavutil/samplefmt.c
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@ -26,20 +26,21 @@ typedef struct SampleFmtInfo {
char name[4];
int bits;
int planar;
enum AVSampleFormat altform; ///< planar<->packed alternative form
} 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, .planar = 0 },
[AV_SAMPLE_FMT_S16] = { .name = "s16", .bits = 16, .planar = 0 },
[AV_SAMPLE_FMT_S32] = { .name = "s32", .bits = 32, .planar = 0 },
[AV_SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32, .planar = 0 },
[AV_SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64, .planar = 0 },
[AV_SAMPLE_FMT_U8P] = { .name = "u8p", .bits = 8, .planar = 1 },
[AV_SAMPLE_FMT_S16P] = { .name = "s16p", .bits = 16, .planar = 1 },
[AV_SAMPLE_FMT_S32P] = { .name = "s32p", .bits = 32, .planar = 1 },
[AV_SAMPLE_FMT_FLTP] = { .name = "fltp", .bits = 32, .planar = 1 },
[AV_SAMPLE_FMT_DBLP] = { .name = "dblp", .bits = 64, .planar = 1 },
[AV_SAMPLE_FMT_U8] = { .name = "u8", .bits = 8, .planar = 0, .altform = AV_SAMPLE_FMT_U8P },
[AV_SAMPLE_FMT_S16] = { .name = "s16", .bits = 16, .planar = 0, .altform = AV_SAMPLE_FMT_S16P },
[AV_SAMPLE_FMT_S32] = { .name = "s32", .bits = 32, .planar = 0, .altform = AV_SAMPLE_FMT_S32P },
[AV_SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32, .planar = 0, .altform = AV_SAMPLE_FMT_FLTP },
[AV_SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64, .planar = 0, .altform = AV_SAMPLE_FMT_DBLP },
[AV_SAMPLE_FMT_U8P] = { .name = "u8p", .bits = 8, .planar = 1, .altform = AV_SAMPLE_FMT_U8 },
[AV_SAMPLE_FMT_S16P] = { .name = "s16p", .bits = 16, .planar = 1, .altform = AV_SAMPLE_FMT_S16 },
[AV_SAMPLE_FMT_S32P] = { .name = "s32p", .bits = 32, .planar = 1, .altform = AV_SAMPLE_FMT_S32 },
[AV_SAMPLE_FMT_FLTP] = { .name = "fltp", .bits = 32, .planar = 1, .altform = AV_SAMPLE_FMT_FLT },
[AV_SAMPLE_FMT_DBLP] = { .name = "dblp", .bits = 64, .planar = 1, .altform = AV_SAMPLE_FMT_DBL },
};
const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
@ -59,6 +60,15 @@ enum AVSampleFormat av_get_sample_fmt(const char *name)
return AV_SAMPLE_FMT_NONE;
}
enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar)
{
if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
return AV_SAMPLE_FMT_NONE;
if (sample_fmt_info[sample_fmt].planar == planar)
return sample_fmt;
return sample_fmt_info[sample_fmt].altform;
}
char *av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt)
{
/* print header */

8
libavutil/samplefmt.h
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@ -53,6 +53,14 @@ const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt);
*/
enum AVSampleFormat av_get_sample_fmt(const char *name);
/**
* Return the planar<->packed alternative form of the given sample format, or
* AV_SAMPLE_FMT_NONE on error. If the passed sample_fmt is already in the
* requested planar/packed format, the format returned is the same as the
* input.
*/
enum AVSampleFormat av_get_alt_sample_fmt(enum AVSampleFormat sample_fmt, int planar);
/**
* Generate a string corresponding to the sample format with
* sample_fmt, or a header if sample_fmt is negative.