/*
  * ISO Media common code

  * copyright (c) 2001 Fabrice Bellard

  * copyright (c) 2002 Francois Revol <revol@free.fr>
  * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
  *

  * 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 AVFORMAT_ISOM_H
 #define AVFORMAT_ISOM_H

 #include "avio.h"

 #include "internal.h"

 #include "dv.h"

 /* isom.c */

 extern const AVCodecTag ff_mp4_obj_type[];

 extern const AVCodecTag codec_movvideo_tags[];
 extern const AVCodecTag codec_movaudio_tags[];

 extern const AVCodecTag ff_codec_movsubtitle_tags[];

 int ff_mov_iso639_to_lang(const char lang[4], int mp4);
 int ff_mov_lang_to_iso639(unsigned code, char to[4]);

 /* the QuickTime file format is quite convoluted...
  * it has lots of index tables, each indexing something in another one...
  * Here we just use what is needed to read the chunks
  */
 

 typedef struct {

     int count;
     int duration;

 } MOVStts;

 typedef struct {
     int first;
     int count;
     int id;
 } MOVStsc;
 
 typedef struct {
     uint32_t type;
     char *path;

     char *dir;
     char volume[28];
     char filename[64];
     int16_t nlvl_to, nlvl_from;

 } MOVDref;
 
 typedef struct {
     uint32_t type;
     int64_t size; /* total size (excluding the size and type fields) */
 } MOVAtom;
 
 struct MOVParseTableEntry;
 
 typedef struct {
     unsigned track_id;
     uint64_t base_data_offset;
     uint64_t moof_offset;
     unsigned stsd_id;
     unsigned duration;
     unsigned size;
     unsigned flags;
 } MOVFragment;
 
 typedef struct {
     unsigned track_id;
     unsigned stsd_id;
     unsigned duration;
     unsigned size;
     unsigned flags;
 } MOVTrackExt;
 
 typedef struct MOVStreamContext {

     AVIOContext *pb;

     int ffindex;          ///< AVStream index

     int next_chunk;
     unsigned int chunk_count;
     int64_t *chunk_offsets;
     unsigned int stts_count;
     MOVStts *stts_data;
     unsigned int ctts_count;
     MOVStts *ctts_data;
     unsigned int stsc_count;
     MOVStsc *stsc_data;

     unsigned int stps_count;
     unsigned *stps_data;  ///< partial sync sample for mpeg-2 open gop

     int ctts_index;
     int ctts_sample;
     unsigned int sample_size;
     unsigned int sample_count;
     int *sample_sizes;
     unsigned int keyframe_count;
     int *keyframes;
     int time_scale;

     int64_t empty_duration; ///< empty duration of the first edit list entry
     int64_t start_time;   ///< start time of the media
     int64_t time_offset;  ///< time offset of the edit list entries

     int current_sample;
     unsigned int bytes_per_frame;
     unsigned int samples_per_frame;
     int dv_audio_container;
     int pseudo_stream_id; ///< -1 means demux all ids

     int16_t audio_cid;    ///< stsd audio compression id

     unsigned drefs_count;
     MOVDref *drefs;
     int dref_id;

     int wrong_dts;        ///< dts are wrong due to huge ctts offset (iMovie files)
     int width;            ///< tkhd width
     int height;           ///< tkhd height
     int dts_shift;        ///< dts shift when ctts is negative

     uint32_t palette[256];
     int has_palette;

     int64_t data_size;

 } MOVStreamContext;
 
 typedef struct MOVContext {

     AVClass *avclass;

     AVFormatContext *fc;
     int time_scale;

     int64_t duration;     ///< duration of the longest track
     int found_moov;       ///< 'moov' atom has been found
     int found_mdat;       ///< 'mdat' atom has been found

     DVDemuxContext *dv_demux;
     AVFormatContext *dv_fctx;

     int isom;             ///< 1 if file is ISO Media (mp4/3gp)

     MOVFragment fragment; ///< current fragment in moof atom
     MOVTrackExt *trex_data;
     unsigned trex_count;

     int itunes_metadata;  ///< metadata are itunes style

     int chapter_track;

     int use_absolute_path;

 } MOVContext;
 

 int ff_mp4_read_descr_len(AVIOContext *pb);
 int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag);
 int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb);

 void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id);

 #define MP4ODescrTag                    0x01

 #define MP4IODescrTag                   0x02
 #define MP4ESDescrTag                   0x03
 #define MP4DecConfigDescrTag            0x04
 #define MP4DecSpecificDescrTag          0x05

 #define MP4SLDescrTag                   0x06

 int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom);

 enum CodecID ff_mov_get_lpcm_codec_id(int bps, int flags);
 

 int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries);

 void ff_mov_read_chan(AVFormatContext *s, int64_t size, AVCodecContext *codec);

 void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout);

 #endif /* AVFORMAT_ISOM_H */