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avutil: use align == 0 for default alignment in audio sample buffer functions 

Fixes: http://pad.lv/1264886, http://pad.lv/1241439
(cherry picked from commit 0109a09dc3)
Signed-off-by: Reinhard Tartler <siretart@tauware.de>

Conflicts:
	libavutil/avutil.h
This commit is contained in:
Justin Ruggles 2012-03-27 21:31:14 -04:00 committed by Reinhard Tartler
parent cb5d0ea0be
commit b68e5b1195
3 changed files with 8 additions and 3 deletions
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2
libavutil/avutil.h
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@ -155,7 +155,7 @@
#define LIBAVUTIL_VERSION_MAJOR 51
#define LIBAVUTIL_VERSION_MINOR 22
#define LIBAVUTIL_VERSION_MICRO 1
#define LIBAVUTIL_VERSION_MICRO 2
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \

4
libavutil/samplefmt.c
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@ -104,6 +104,10 @@ int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
if (!sample_size || nb_samples <= 0 || nb_channels <= 0)
return AVERROR(EINVAL);
/* auto-select alignment if not specified */
if (!align)
align = 32;
/* check for integer overflow */
if (nb_channels > INT_MAX / align ||
(int64_t)nb_channels * nb_samples > (INT_MAX - (align * nb_channels)) / sample_size)

5
libavutil/samplefmt.h
View File

@ -99,6 +99,7 @@ int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt);
* @param nb_channels the number of channels
* @param nb_samples the number of samples in a single channel
* @param sample_fmt the sample format
* @param align buffer size alignment (0 = default, 1 = no alignment)
* @return required buffer size, or negative error code on failure
*/
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
@ -122,7 +123,7 @@ int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples,
* @param nb_channels the number of channels
* @param nb_samples the number of samples in a single channel
* @param sample_fmt the sample format
* @param align buffer size alignment (1 = no alignment required)
* @param align buffer size alignment (0 = default, 1 = no alignment)
* @return 0 on success or a negative error code on failure
*/
int av_samples_fill_arrays(uint8_t **audio_data, int *linesize, uint8_t *buf,
@ -138,7 +139,7 @@ int av_samples_fill_arrays(uint8_t **audio_data, int *linesize, uint8_t *buf,
* @param[out] linesize aligned size for audio buffer(s)
* @param nb_channels number of audio channels
* @param nb_samples number of samples per channel
* @param align buffer size alignment (1 = no alignment required)
* @param align buffer size alignment (0 = default, 1 = no alignment)
* @return 0 on success or a negative error code on failure
* @see av_samples_fill_arrays()
*/