API changes, most recent first:
+2011-xx-xx - xxxxxxx - lavu 51.17.0
+ Add planar sample formats and av_sample_fmt_is_planar() to samplefmt.h.
+
2011-xx-xx - xxxxxxx - lavc 53.21.0
Move some AVCodecContext fields to a new private struct, AVCodecInternal,
which is accessed from a new field, AVCodecContext.internal.
typedef struct SampleFmtInfo {
const char *name;
int bits;
+ int planar;
} 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 },
+ [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 },
};
const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
0 : sample_fmt_info[sample_fmt].bits;
}
#endif
+
+int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
+{
+ if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+ return 0;
+ return sample_fmt_info[sample_fmt].planar;
+}
AV_SAMPLE_FMT_S32, ///< signed 32 bits
AV_SAMPLE_FMT_FLT, ///< float
AV_SAMPLE_FMT_DBL, ///< double
+
+ AV_SAMPLE_FMT_U8P, ///< unsigned 8 bits, planar
+ AV_SAMPLE_FMT_S16P, ///< signed 16 bits, planar
+ AV_SAMPLE_FMT_S32P, ///< signed 32 bits, planar
+ AV_SAMPLE_FMT_FLTP, ///< float, planar
+ AV_SAMPLE_FMT_DBLP, ///< double, planar
+
AV_SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if linking dynamically
};
*/
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt);
+/**
+ * Check if the sample format is planar.
+ *
+ * @param sample_fmt the sample format to inspect
+ * @return 1 if the sample format is planar, 0 if it is interleaved
+ */
+int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt);
+
#endif /* AVUTIL_SAMPLEFMT_H */