| /* | |
| * AVC helper functions for muxers | |
| * Copyright (c) 2008 Aurelien Jacobs <[email protected]> | |
| * | |
| * 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 | |
| */ | |
| typedef struct NALU { | |
| int offset; | |
| uint32_t size; | |
| } NALU; | |
| typedef struct NALUList { | |
| NALU *nalus; | |
| unsigned nalus_array_size; | |
| unsigned nb_nalus; ///< valid entries in nalus | |
| } NALUList; | |
| /* This function will parse the given annex B buffer and create | |
| * a NALUList from it. This list can be passed to ff_nal_units_write_list() | |
| * to write the access unit reformatted to mp4. | |
| * | |
| * @param list A NALUList. The list->nalus and list->nalus_array_size | |
| * must be valid when calling this function and may be updated. | |
| * nb_nalus is set by this function on success. | |
| * @param buf buffer containing annex B H.264 or H.265. Must be padded. | |
| * @param size size of buf, excluding padding. | |
| * @return < 0 on error, the size of the mp4-style packet on success. | |
| */ | |
| int ff_nal_units_create_list(NALUList *list, const uint8_t *buf, int size); | |
| /* Writes a NALUList to the specified AVIOContext. The list must originate | |
| * from ff_nal_units_create_list() with the same buf. */ | |
| void ff_nal_units_write_list(const NALUList *list, AVIOContext *pb, | |
| const uint8_t *buf); | |
| int ff_avc_parse_nal_units(AVIOContext *s, const uint8_t *buf, int size); | |
| int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size); | |
| int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len); | |
| const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end); | |
| int ff_avc_write_annexb_extradata(const uint8_t *in, uint8_t **buf, int *size); | |
| const uint8_t *ff_avc_mp4_find_startcode(const uint8_t *start, | |
| const uint8_t *end, | |
| int nal_length_size); | |
| uint8_t *ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len, | |
| uint32_t *dst_len, int header_len); | |
| typedef struct { | |
| uint8_t id; | |
| uint8_t profile_idc; | |
| uint8_t level_idc; | |
| uint8_t constraint_set_flags; | |
| uint8_t chroma_format_idc; | |
| uint8_t bit_depth_luma; | |
| uint8_t bit_depth_chroma; | |
| uint8_t frame_mbs_only_flag; | |
| AVRational sar; | |
| } H264SPS; | |
| int ff_avc_decode_sps(H264SPS *sps, const uint8_t *buf, int buf_size); | |