d552f616a2
* qatar/master: (28 commits) Remove some non-compiling debug messages. ffplay: Fix non-compiling debug printf and replace it by av_dlog. H264: x86 predict init cosmetics. ac3enc: Fix linking of AC-3 encoder without the E-AC-3 encoder. Move E-AC-3 encoder functions to a separate eac3enc.c file. ac3enc: remove convenience macro, #define DEBUG ac3enc: remove unused #define vc1: re-initialize tables after width/height change. APIchanges: fill-in git commit hash for av_get_bytes_per_sample() addition samplefmt: add av_get_bytes_per_sample() iirfilter: fix biquad filter coefficients. swscale: remove duplicate conversion routine in swScale(). swscale: add yuv2planar/packed function typedefs. swscale: integrate yuv2nv12X_C into yuv2yuvX() function pointers. swscale: reindent x86 init code. swscale: extract SWS_FULL_CHR_H_INT conditional into init code. swscale: cosmetics. swscale: remove alp/chr/lumSrcOffset. swscale: un-special-case yuv2yuvX16_c(). shorten: Remove stray DEBUG #define and corresponding av_dlog statement. ... Conflicts: doc/APIchanges libavcodec/ac3enc.c libavutil/avutil.h libavutil/samplefmt.c libswscale/swscale.c libswscale/swscale_internal.h libswscale/x86/swscale_template.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
126 lines
4.5 KiB
C
126 lines
4.5 KiB
C
/*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_SAMPLEFMT_H
|
|
#define AVUTIL_SAMPLEFMT_H
|
|
|
|
#include "avutil.h"
|
|
|
|
/**
|
|
* all in native-endian format
|
|
*/
|
|
enum AVSampleFormat {
|
|
AV_SAMPLE_FMT_NONE = -1,
|
|
AV_SAMPLE_FMT_U8, ///< unsigned 8 bits
|
|
AV_SAMPLE_FMT_S16, ///< signed 16 bits
|
|
AV_SAMPLE_FMT_S32, ///< signed 32 bits
|
|
AV_SAMPLE_FMT_FLT, ///< float
|
|
AV_SAMPLE_FMT_DBL, ///< double
|
|
AV_SAMPLE_FMT_NB ///< Number of sample formats. DO NOT USE if linking dynamically
|
|
};
|
|
|
|
/**
|
|
* Return the name of sample_fmt, or NULL if sample_fmt is not
|
|
* recognized.
|
|
*/
|
|
const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt);
|
|
|
|
/**
|
|
* Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE
|
|
* on error.
|
|
*/
|
|
enum AVSampleFormat av_get_sample_fmt(const char *name);
|
|
|
|
/**
|
|
* Generate a string corresponding to the sample format with
|
|
* sample_fmt, or a header if sample_fmt is negative.
|
|
*
|
|
* @param buf the buffer where to write the string
|
|
* @param buf_size the size of buf
|
|
* @param sample_fmt the number of the sample format to print the
|
|
* corresponding info string, or a negative value to print the
|
|
* corresponding header.
|
|
* @return the pointer to the filled buffer or NULL if sample_fmt is
|
|
* unknown or in case of other errors
|
|
*/
|
|
char *av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt);
|
|
|
|
#if FF_API_GET_BITS_PER_SAMPLE_FMT
|
|
/**
|
|
* @deprecated Use av_get_bytes_per_sample() instead.
|
|
*/
|
|
attribute_deprecated
|
|
int av_get_bits_per_sample_fmt(enum AVSampleFormat sample_fmt);
|
|
#endif
|
|
|
|
/**
|
|
* Return number of bytes per sample.
|
|
*
|
|
* @param sample_fmt the sample format
|
|
* @return number of bytes per sample or zero if unknown for the given
|
|
* sample format
|
|
*/
|
|
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt);
|
|
|
|
/**
|
|
* 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:
|
|
* for planar, set the start point of each plane's data within the buffer,
|
|
* for packed, set the start point of the entire buffer only.
|
|
*
|
|
* The linesize array is filled with the aligned size of each samples
|
|
* plane, that is linesize[i] will contain the linesize of the plane i,
|
|
* and will be zero for all the unused planes. All linesize values are
|
|
* equal.
|
|
*
|
|
* @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_channels number of audio channels
|
|
* @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_channels, int nb_samples,
|
|
enum AVSampleFormat sample_fmt, int planar,
|
|
int align);
|
|
|
|
#endif /* AVCORE_SAMPLEFMT_H */
|