diff options
Diffstat (limited to 'libavutil/samplefmt.h')
-rw-r--r-- | libavutil/samplefmt.h | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/libavutil/samplefmt.h b/libavutil/samplefmt.h index 0604580a7a..9b9c0d49a9 100644 --- a/libavutil/samplefmt.h +++ b/libavutil/samplefmt.h @@ -19,6 +19,8 @@ #ifndef AVUTIL_SAMPLEFMT_H #define AVUTIL_SAMPLEFMT_H +#include "avutil.h" + /** * all in native-endian format */ @@ -67,4 +69,43 @@ char *av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat samp */ int av_get_bits_per_sample_fmt(enum AVSampleFormat sample_fmt); -#endif /* AVUTIL_SAMPLEFMT_H */ +/** + * Fill channel data pointers and linesizes for samples with sample + * format sample_fmt. + * + * The pointers array is filled with the pointers to the samples data: + * data[c] points to the first sample of channel c. + * data[c] + linesize[0] points to the second sample of channel c + * + * @param pointers array to be filled with the pointer for each plane, may be NULL + * @param linesizes array to be filled with the linesize, may be NULL + * @param buf the pointer to a buffer containing the samples + * @param nb_samples the number of samples in a single channel + * @param planar 1 if the samples layout is planar, 0 if it is packed + * @param nb_channels the number of channels + * @return the total size of the buffer, a negative + * error code in case of failure + */ +int av_samples_fill_arrays(uint8_t *pointers[8], int linesizes[8], + uint8_t *buf, int nb_channels, int nb_samples, + enum AVSampleFormat sample_fmt, int planar, int align); + +/** + * Allocate a samples buffer for nb_samples samples, and + * fill pointers and linesizes accordingly. + * The allocated samples buffer has to be freed by using + * av_freep(&pointers[0]). + * + * @param nb_samples number of samples per channel + * @param planar 1 if the samples layout is planar, 0 if packed, + * @param align the value to use for buffer size alignment + * @return the size in bytes required for the samples buffer, a negative + * error code in case of failure + * @see av_samples_fill_arrays() + */ +int av_samples_alloc(uint8_t *pointers[8], int linesizes[8], + int nb_samples, int nb_channels, + enum AVSampleFormat sample_fmt, int planar, + int align); + +#endif /* AVCORE_SAMPLEFMT_H */ |