libavformat/avc.h

   1 /*
   2  * AVC helper functions for muxers
   3  * Copyright (c) 2008 Aurelien Jacobs <aurel@gnuage.org>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef AVFORMAT_AVC_H
  23 #define AVFORMAT_AVC_H
  24
  25 #include <stdint.h>
  26 #include "avio.h"
  27
  28 int ff_avc_parse_nal_units(AVIOContext *s, const uint8_t *buf, int size);
  29 int ff_avc_parse_nal_units_buf(const uint8_t *buf_in, uint8_t **buf, int *size);
  30 int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len);
  31 const uint8_t *ff_avc_find_startcode(const uint8_t *p, const uint8_t *end);
  32 int ff_avc_write_annexb_extradata(const uint8_t *in, uint8_t **buf, int *size);
  33 const uint8_t *ff_avc_mp4_find_startcode(const uint8_t *start,
  34                                          const uint8_t *end,
  35                                          int nal_length_size);
  36 uint8_t *ff_nal_unit_extract_rbsp(const uint8_t *src, uint32_t src_len,
  37                                   uint32_t *dst_len, int header_len);
  38
  39 typedef struct {
  40     uint8_t id;
  41     uint8_t profile_idc;
  42     uint8_t level_idc;
  43     uint8_t constraint_set_flags;
  44     uint8_t chroma_format_idc;
  45     uint8_t bit_depth_luma;
  46     uint8_t bit_depth_chroma;
  47     uint8_t frame_mbs_only_flag;
  48     AVRational sar;
  49 } H264SPS;
  50
  51 int ff_avc_decode_sps(H264SPS *sps, const uint8_t *buf, int buf_size);
  52
  53 #endif /* AVFORMAT_AVC_H */