| /* |
| * 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 */ |
