/* * 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 */