blob: 73ae25aab1bcdc81dbee149951417baa4a52109d
1 | /* |
2 | * ISO Media common code |
3 | * copyright (c) 2001 Fabrice Bellard |
4 | * copyright (c) 2002 Francois Revol <revol@free.fr> |
5 | * copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr> |
6 | * |
7 | * This file is part of FFmpeg. |
8 | * |
9 | * FFmpeg is free software; you can redistribute it and/or |
10 | * modify it under the terms of the GNU Lesser General Public |
11 | * License as published by the Free Software Foundation; either |
12 | * version 2.1 of the License, or (at your option) any later version. |
13 | * |
14 | * FFmpeg is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | * Lesser General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU Lesser General Public |
20 | * License along with FFmpeg; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | */ |
23 | |
24 | #ifndef AVFORMAT_ISOM_H |
25 | #define AVFORMAT_ISOM_H |
26 | |
27 | #include "avio.h" |
28 | #include "internal.h" |
29 | #include "dv.h" |
30 | |
31 | /* isom.c */ |
32 | extern const AVCodecTag ff_mp4_obj_type[]; |
33 | extern const AVCodecTag ff_codec_movvideo_tags[]; |
34 | extern const AVCodecTag ff_codec_movaudio_tags[]; |
35 | extern const AVCodecTag ff_codec_movsubtitle_tags[]; |
36 | |
37 | int ff_mov_iso639_to_lang(const char lang[4], int mp4); |
38 | int ff_mov_lang_to_iso639(unsigned code, char to[4]); |
39 | |
40 | /* the QuickTime file format is quite convoluted... |
41 | * it has lots of index tables, each indexing something in another one... |
42 | * Here we just use what is needed to read the chunks |
43 | */ |
44 | |
45 | typedef struct MOVStts { |
46 | int count; |
47 | int duration; |
48 | } MOVStts; |
49 | |
50 | typedef struct MOVStsc { |
51 | int first; |
52 | int count; |
53 | int id; |
54 | } MOVStsc; |
55 | |
56 | typedef struct MOVDref { |
57 | uint32_t type; |
58 | char *path; |
59 | char *dir; |
60 | char volume[28]; |
61 | char filename[64]; |
62 | int16_t nlvl_to, nlvl_from; |
63 | } MOVDref; |
64 | |
65 | typedef struct MOVAtom { |
66 | uint32_t type; |
67 | int64_t size; /* total size (excluding the size and type fields) */ |
68 | } MOVAtom; |
69 | |
70 | struct MOVParseTableEntry; |
71 | |
72 | typedef struct MOVFragment { |
73 | unsigned track_id; |
74 | uint64_t base_data_offset; |
75 | uint64_t moof_offset; |
76 | unsigned stsd_id; |
77 | unsigned duration; |
78 | unsigned size; |
79 | unsigned flags; |
80 | } MOVFragment; |
81 | |
82 | typedef struct MOVTrackExt { |
83 | unsigned track_id; |
84 | unsigned stsd_id; |
85 | unsigned duration; |
86 | unsigned size; |
87 | unsigned flags; |
88 | } MOVTrackExt; |
89 | |
90 | typedef struct MOVSbgp { |
91 | unsigned int count; |
92 | unsigned int index; |
93 | } MOVSbgp; |
94 | |
95 | typedef struct MOVStreamContext { |
96 | AVIOContext *pb; |
97 | int pb_is_copied; |
98 | int ffindex; ///< AVStream index |
99 | int next_chunk; |
100 | unsigned int chunk_count; |
101 | int64_t *chunk_offsets; |
102 | unsigned int stts_count; |
103 | MOVStts *stts_data; |
104 | unsigned int ctts_count; |
105 | MOVStts *ctts_data; |
106 | unsigned int stsc_count; |
107 | MOVStsc *stsc_data; |
108 | unsigned int stps_count; |
109 | unsigned *stps_data; ///< partial sync sample for mpeg-2 open gop |
110 | int ctts_index; |
111 | int ctts_sample; |
112 | unsigned int sample_size; ///< may contain value calculated from stsd or value from stsz atom |
113 | unsigned int stsz_sample_size; ///< always contains sample size from stsz atom |
114 | unsigned int sample_count; |
115 | int *sample_sizes; |
116 | int keyframe_absent; |
117 | unsigned int keyframe_count; |
118 | int *keyframes; |
119 | int time_scale; |
120 | int64_t empty_duration; ///< empty duration of the first edit list entry |
121 | int64_t start_time; ///< start time of the media |
122 | int64_t time_offset; ///< time offset of the edit list entries |
123 | int current_sample; |
124 | unsigned int bytes_per_frame; |
125 | unsigned int samples_per_frame; |
126 | int dv_audio_container; |
127 | int pseudo_stream_id; ///< -1 means demux all ids |
128 | int16_t audio_cid; ///< stsd audio compression id |
129 | unsigned drefs_count; |
130 | MOVDref *drefs; |
131 | int dref_id; |
132 | int timecode_track; |
133 | int wrong_dts; ///< dts are wrong due to huge ctts offset (iMovie files) |
134 | int width; ///< tkhd width |
135 | int height; ///< tkhd height |
136 | int dts_shift; ///< dts shift when ctts is negative |
137 | uint32_t palette[256]; |
138 | int has_palette; |
139 | int64_t data_size; |
140 | uint32_t tmcd_flags; ///< tmcd track flags |
141 | int64_t track_end; ///< used for dts generation in fragmented movie files |
142 | int start_pad; ///< amount of samples to skip due to enc-dec delay |
143 | unsigned int rap_group_count; |
144 | MOVSbgp *rap_group; |
145 | } MOVStreamContext; |
146 | |
147 | typedef struct MOVContext { |
148 | AVClass *avclass; |
149 | AVFormatContext *fc; |
150 | int time_scale; |
151 | int64_t duration; ///< duration of the longest track |
152 | int found_moov; ///< 'moov' atom has been found |
153 | int found_mdat; ///< 'mdat' atom has been found |
154 | int found_hdlr_mdta; ///< 'hdlr' atom with type 'mdta' has been found |
155 | int trak_index; ///< Index of the current 'trak' |
156 | char **meta_keys; |
157 | unsigned meta_keys_count; |
158 | DVDemuxContext *dv_demux; |
159 | AVFormatContext *dv_fctx; |
160 | int isom; ///< 1 if file is ISO Media (mp4/3gp) |
161 | MOVFragment fragment; ///< current fragment in moof atom |
162 | MOVTrackExt *trex_data; |
163 | unsigned trex_count; |
164 | int itunes_metadata; ///< metadata are itunes style |
165 | int chapter_track; |
166 | int use_absolute_path; |
167 | int ignore_editlist; |
168 | int64_t next_root_atom; ///< offset of the next root atom |
169 | int *bitrates; ///< bitrates read before streams creation |
170 | int bitrates_count; |
171 | } MOVContext; |
172 | |
173 | int ff_mp4_read_descr_len(AVIOContext *pb); |
174 | int ff_mp4_read_descr(AVFormatContext *fc, AVIOContext *pb, int *tag); |
175 | int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext *pb); |
176 | void ff_mp4_parse_es_descr(AVIOContext *pb, int *es_id); |
177 | |
178 | #define MP4ODescrTag 0x01 |
179 | #define MP4IODescrTag 0x02 |
180 | #define MP4ESDescrTag 0x03 |
181 | #define MP4DecConfigDescrTag 0x04 |
182 | #define MP4DecSpecificDescrTag 0x05 |
183 | #define MP4SLDescrTag 0x06 |
184 | |
185 | #define MOV_TFHD_BASE_DATA_OFFSET 0x01 |
186 | #define MOV_TFHD_STSD_ID 0x02 |
187 | #define MOV_TFHD_DEFAULT_DURATION 0x08 |
188 | #define MOV_TFHD_DEFAULT_SIZE 0x10 |
189 | #define MOV_TFHD_DEFAULT_FLAGS 0x20 |
190 | #define MOV_TFHD_DURATION_IS_EMPTY 0x010000 |
191 | |
192 | #define MOV_TRUN_DATA_OFFSET 0x01 |
193 | #define MOV_TRUN_FIRST_SAMPLE_FLAGS 0x04 |
194 | #define MOV_TRUN_SAMPLE_DURATION 0x100 |
195 | #define MOV_TRUN_SAMPLE_SIZE 0x200 |
196 | #define MOV_TRUN_SAMPLE_FLAGS 0x400 |
197 | #define MOV_TRUN_SAMPLE_CTS 0x800 |
198 | |
199 | #define MOV_FRAG_SAMPLE_FLAG_DEGRADATION_PRIORITY_MASK 0x0000ffff |
200 | #define MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC 0x00010000 |
201 | #define MOV_FRAG_SAMPLE_FLAG_PADDING_MASK 0x000e0000 |
202 | #define MOV_FRAG_SAMPLE_FLAG_REDUNDANCY_MASK 0x00300000 |
203 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDED_MASK 0x00c00000 |
204 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_MASK 0x03000000 |
205 | |
206 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_NO 0x02000000 |
207 | #define MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES 0x01000000 |
208 | |
209 | #define MOV_TKHD_FLAG_ENABLED 0x0001 |
210 | #define MOV_TKHD_FLAG_IN_MOVIE 0x0002 |
211 | #define MOV_TKHD_FLAG_IN_PREVIEW 0x0004 |
212 | #define MOV_TKHD_FLAG_IN_POSTER 0x0008 |
213 | |
214 | int ff_mov_read_esds(AVFormatContext *fc, AVIOContext *pb, MOVAtom atom); |
215 | enum AVCodecID ff_mov_get_lpcm_codec_id(int bps, int flags); |
216 | |
217 | int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries); |
218 | void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout); |
219 | |
220 | #endif /* AVFORMAT_ISOM_H */ |
221 |