mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
57 lines
2.3 KiB
C
57 lines
2.3 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 AVCODEC_ATSC_A53_H
|
|
#define AVCODEC_ATSC_A53_H
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "libavutil/buffer.h"
|
|
#include "libavutil/frame.h"
|
|
|
|
/**
|
|
* Check AVFrame for A53 side data and allocate and fill SEI message with A53 info
|
|
*
|
|
* @param frame Raw frame to get A53 side data from
|
|
* @param prefix_len Number of bytes to allocate before SEI message
|
|
* @param data Pointer to a variable to store allocated memory
|
|
* Upon return the variable will hold NULL on error or if frame has no A53 info.
|
|
* Otherwise it will point to prefix_len uninitialized bytes followed by
|
|
* *sei_size SEI message
|
|
* @param sei_size Pointer to a variable to store generated SEI message length
|
|
* @return Zero on success, negative error code on failure
|
|
*/
|
|
int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
|
|
void **data, size_t *sei_size);
|
|
|
|
/**
|
|
* Parse a data array for ATSC A53 Part 4 Closed Captions and store them in an AVBufferRef.
|
|
*
|
|
* @param pbuf Pointer to an AVBufferRef to append the closed captions. *pbuf may be NULL, in
|
|
* which case a new buffer will be allocated and put in it.
|
|
* @param data The data array containing the raw A53 data.
|
|
* @param size Size of the data array in bytes.
|
|
*
|
|
* @return Number of closed captions parsed on success, negative error code on failure.
|
|
* If no Closed Captions are parsed, *pbuf is untouched.
|
|
*/
|
|
int ff_parse_a53_cc(AVBufferRef **pbuf, const uint8_t *data, int size);
|
|
|
|
#endif /* AVCODEC_ATSC_A53_H */
|