/*
  * 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 ff_codec_movvideo_tags[];
 extern const AVCodecTag ff_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 MOVStts {

     int count;
     int duration;

 } MOVStts;

 typedef struct MOVStsc {

     int first;
     int count;
     int id;
 } MOVStsc;
 

 typedef struct MOVDref {

     uint32_t type;
     char *path;

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

 } MOVDref;
 

 typedef struct MOVAtom {

     uint32_t type;
     int64_t size; /* total size (excluding the size and type fields) */
 } MOVAtom;
 
 struct MOVParseTableEntry;
 

 typedef struct MOVFragment {

     unsigned track_id;
     uint64_t base_data_offset;
     uint64_t moof_offset;

     uint64_t implicit_offset;

     unsigned stsd_id;
     unsigned duration;
     unsigned size;
     unsigned flags;
 } MOVFragment;
 

 typedef struct MOVTrackExt {

     unsigned track_id;
     unsigned stsd_id;
     unsigned duration;
     unsigned size;
     unsigned flags;
 } MOVTrackExt;
 

 typedef struct MOVSbgp {

     unsigned int count;
     unsigned int index;
 } MOVSbgp;
 

 typedef struct MOVStreamContext {

     AVIOContext *pb;

     int pb_is_copied;

     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; ///< may contain value calculated from stsd or value from stsz atom

     unsigned int stsz_sample_size; ///< always contains sample size from stsz atom

     unsigned int sample_count;
     int *sample_sizes;

     int keyframe_absent;

     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 timecode_track;

     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;

     uint32_t tmcd_flags;  ///< tmcd track flags

     int64_t track_end;    ///< used for dts generation in fragmented movie files

     int start_pad;        ///< amount of samples to skip due to enc-dec delay

     unsigned int rap_group_count;
     MOVSbgp *rap_group;

 
     int nb_frames_for_fps;
     int64_t duration_for_fps;

     int32_t *display_matrix;

 } 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;

     int ignore_editlist;

     int64_t next_root_atom; ///< offset of the next root atom

     int *bitrates;          ///< bitrates read before streams creation
     int bitrates_count;

     int moov_retry;

     int atom_depth;

 } 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

 #define MOV_TFHD_BASE_DATA_OFFSET       0x01
 #define MOV_TFHD_STSD_ID                0x02
 #define MOV_TFHD_DEFAULT_DURATION       0x08
 #define MOV_TFHD_DEFAULT_SIZE           0x10
 #define MOV_TFHD_DEFAULT_FLAGS          0x20
 #define MOV_TFHD_DURATION_IS_EMPTY  0x010000

 #define MOV_TFHD_DEFAULT_BASE_IS_MOOF 0x020000

 #define MOV_TRUN_DATA_OFFSET            0x01
 #define MOV_TRUN_FIRST_SAMPLE_FLAGS     0x04
 #define MOV_TRUN_SAMPLE_DURATION       0x100
 #define MOV_TRUN_SAMPLE_SIZE           0x200
 #define MOV_TRUN_SAMPLE_FLAGS          0x400
 #define MOV_TRUN_SAMPLE_CTS            0x800
 

 #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff
 #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC               0x00010000
 #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK              0x000e0000
 #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK           0x00300000
 #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK             0x00c00000
 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK              0x03000000
 
 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO                0x02000000
 #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES               0x01000000
 

 #define MOV_TKHD_FLAG_ENABLED       0x0001
 #define MOV_TKHD_FLAG_IN_MOVIE      0x0002
 #define MOV_TKHD_FLAG_IN_PREVIEW    0x0004
 #define MOV_TKHD_FLAG_IN_POSTER     0x0008
 

 #define TAG_IS_AVCI(tag)                    \
     ((tag) == MKTAG('a', 'i', '5', 'p') ||  \
      (tag) == MKTAG('a', 'i', '5', 'q') ||  \
      (tag) == MKTAG('a', 'i', '5', '2') ||  \
      (tag) == MKTAG('a', 'i', '5', '3') ||  \
      (tag) == MKTAG('a', 'i', '5', '5') ||  \
      (tag) == MKTAG('a', 'i', '5', '6') ||  \
      (tag) == MKTAG('a', 'i', '1', 'p') ||  \
      (tag) == MKTAG('a', 'i', '1', 'q') ||  \
      (tag) == MKTAG('a', 'i', '1', '2') ||  \
      (tag) == MKTAG('a', 'i', '1', '3') ||  \
      (tag) == MKTAG('a', 'i', '1', '5') ||  \
      (tag) == MKTAG('a', 'i', '1', '6') ||  \
      (tag) == MKTAG('A', 'V', 'i', 'n'))
 
 

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

 enum AVCodecID 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_write_chan(AVIOContext *pb, int64_t channel_layout);

 #endif /* AVFORMAT_ISOM_H */