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swf.h
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1 /*
2  * Flash Compatible Streaming Format common header.
3  * Copyright (c) 2000 Fabrice Bellard
4  * Copyright (c) 2003 Tinic Uro
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #ifndef AVFORMAT_SWF_H
24 #define AVFORMAT_SWF_H
25 
26 #include "config.h"
27 
28 #if CONFIG_ZLIB
29 #include <zlib.h>
30 #endif
31 
32 #include "libavutil/fifo.h"
33 #include "avformat.h"
34 #include "avio.h"
35 #include "internal.h"
36 
37 /* should have a generic way to indicate probable size */
38 #define DUMMY_FILE_SIZE (100 * 1024 * 1024)
39 #define DUMMY_DURATION 600 /* in seconds */
40 
41 enum {
42  TAG_END = 0,
43  TAG_SHOWFRAME = 1,
44  TAG_DEFINESHAPE = 2,
45  TAG_FREECHARACTER = 3,
46  TAG_PLACEOBJECT = 4,
47  TAG_REMOVEOBJECT = 5,
48  TAG_DEFINEBITS = 6,
49  TAG_DEFINEBUTTON = 7,
50  TAG_JPEGTABLES = 8,
51  TAG_SETBACKGROUNDCOLOR = 9,
52  TAG_DEFINEFONT = 10,
53  TAG_DEFINETEXT = 11,
54  TAG_DOACTION = 12,
55  TAG_DEFINEFONTINFO = 13,
56  TAG_DEFINESOUND = 14,
57  TAG_STARTSOUND = 15,
58  TAG_DEFINEBUTTONSOUND = 17,
59  TAG_STREAMHEAD = 18,
60  TAG_STREAMBLOCK = 19,
61  TAG_DEFINEBITSLOSSLESS = 20,
62  TAG_JPEG2 = 21,
63  TAG_DEFINESHAPE2 = 22,
64  TAG_DEFINEBUTTONCXFORM = 23,
65  TAG_PROTECT = 24,
66  TAG_PLACEOBJECT2 = 26,
67  TAG_REMOVEOBJECT2 = 28,
68  TAG_DEFINESHAPE3 = 32,
69  TAG_DEFINETEXT2 = 33,
70  TAG_DEFINEBUTTON2 = 34,
71  TAG_DEFINEBITSJPEG3 = 35,
72  TAG_DEFINEBITSLOSSLESS2 = 36,
73  TAG_DEFINEEDITTEXT = 37,
74  TAG_DEFINESPRITE = 39,
75  TAG_FRAMELABEL = 43,
76  TAG_STREAMHEAD2 = 45,
77  TAG_DEFINEMORPHSHAPE = 46,
78  TAG_DEFINEFONT2 = 48,
79  TAG_EXPORTASSETS = 56,
80  TAG_IMPORTASSETS = 57,
81  TAG_ENABLEDEBUGGER = 58,
82  TAG_DOINITACTION = 59,
83  TAG_VIDEOSTREAM = 60,
84  TAG_VIDEOFRAME = 61,
85  TAG_DEFINEFONTINFO2 = 62,
86  TAG_ENABLEDEBUGGER2 = 64,
87  TAG_SCRIPTLIMITS = 65,
88  TAG_SETTABINDEX = 66,
89  TAG_FILEATTRIBUTES = 69,
90  TAG_PLACEOBJECT3 = 70,
91  TAG_IMPORTASSETS2 = 71,
92  TAG_DEFINEFONTALIGNZONES = 73,
93  TAG_CSMTEXTSETTINGS = 74,
94  TAG_DEFINEFONT3 = 75,
95  TAG_SYMBOLCLASS = 76,
96  TAG_METADATA = 77,
97  TAG_DEFINESCALINGGRID = 78,
98  TAG_DOABC = 82,
99  TAG_DEFINESHAPE4 = 83,
100  TAG_DEFINEMORPHSHAPE2 = 84,
101  TAG_DEFINESCENEANDFRAMELABELDATA = 86,
102  TAG_DEFINEBINARYDATA = 87,
103  TAG_DEFINEFONTNAME = 88,
104  TAG_STARTSOUND2 = 89,
105  TAG_DEFINEBITSJPEG4 = 90,
106  TAG_DEFINEFONT4 = 91,
107 };
108 
109 #define TAG_LONG 0x100
110 
111 /* flags for shape definition */
112 #define FLAG_MOVETO 0x01
113 #define FLAG_SETFILL0 0x02
114 #define FLAG_SETFILL1 0x04
115 
116 #define AUDIO_FIFO_SIZE 65536
117 
118 /* character id used */
119 #define BITMAP_ID 0
120 #define VIDEO_ID 0
121 #define SHAPE_ID 1
122 
123 typedef struct SWFContext {
124  int64_t duration_pos;
125  int64_t tag_pos;
126  int64_t vframes_pos;
127  int samples_per_frame;
128  int sound_samples;
129  int swf_frame_number;
130  int video_frame_number;
131  int frame_rate;
132  int tag;
133  AVFifoBuffer *audio_fifo;
134  AVCodecContext *audio_enc, *video_enc;
135 #if CONFIG_ZLIB
136  AVIOContext *zpb;
137 #define ZBUF_SIZE 4096
138  uint8_t *zbuf_in;
139  uint8_t *zbuf_out;
140  z_stream zstream;
141 #endif
142 } SWFContext;
143 
144 extern const AVCodecTag ff_swf_codec_tags[];
145 
146 #endif /* AVFORMAT_SWF_H */
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