3421a089626a513282827626c0832b562854c2df
[libav.git] / libavformat / asf.h
1 /*
2 * Copyright (c) 2000, 2001 Fabrice Bellard.
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <stdint.h>
22 #include "avformat.h"
23
24 #define PACKET_SIZE 3200
25
26 typedef struct {
27 int num;
28 unsigned char seq;
29 /* use for reading */
30 AVPacket pkt;
31 int frag_offset;
32 int timestamp;
33 int64_t duration;
34
35 int ds_span; /* descrambling */
36 int ds_packet_size;
37 int ds_chunk_size;
38
39 int64_t packet_pos;
40
41 } ASFStream;
42
43 typedef uint8_t GUID[16];
44
45 typedef struct {
46 GUID guid; ///< generated by client computer
47 uint64_t file_size; /**< in bytes
48 * invalid if broadcasting */
49 uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601
50 * invalid if broadcasting */
51 uint64_t play_time; /**< play time, in 100-nanosecond units
52 * invalid if broadcasting */
53 uint64_t send_time; /**< time to send file, in 100-nanosecond units
54 * invalid if broadcasting (could be ignored) */
55 uint32_t preroll; /**< timestamp of the first packet, in milliseconds
56 * if nonzero - substract from time */
57 uint32_t ignore; ///< preroll is 64bit - but let's just ignore it
58 uint32_t flags; /**< 0x01 - broadcast
59 * 0x02 - seekable
60 * rest is reserved should be 0 */
61 uint32_t min_pktsize; /**< size of a data packet
62 * invalid if broadcasting */
63 uint32_t max_pktsize; /**< shall be the same as for min_pktsize
64 * invalid if broadcasting */
65 uint32_t max_bitrate; /**< bandwith of stream in bps
66 * should be the sum of bitrates of the
67 * individual media streams */
68 } ASFMainHeader;
69
70
71 typedef struct {
72 uint32_t packet_number;
73 uint16_t packet_count;
74 } ASFIndex;
75
76
77 typedef struct {
78 uint32_t seqno;
79 unsigned int packet_size;
80 int is_streamed;
81 int asfid2avid[128]; ///< conversion table from asf ID 2 AVStream ID
82 ASFStream streams[128]; ///< it's max number and it's not that big
83 uint32_t stream_bitrates[128]; ///< max number of streams, bitrate for each (for streaming)
84 /* non streamed additonnal info */
85 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
86 int64_t duration; ///< in 100ns units
87 /* packet filling */
88 unsigned char multi_payloads_present;
89 int packet_size_left;
90 int packet_timestamp_start;
91 int packet_timestamp_end;
92 unsigned int packet_nb_payloads;
93 int packet_nb_frames;
94 uint8_t packet_buf[PACKET_SIZE];
95 ByteIOContext pb;
96 /* only for reading */
97 uint64_t data_offset; ///< begining of the first data packet
98 uint64_t data_object_offset; ///< data object offset (excl. GUID & size)
99 uint64_t data_object_size; ///< size of the data object
100 int index_read;
101
102 ASFMainHeader hdr;
103
104 int packet_flags;
105 int packet_property;
106 int packet_timestamp;
107 int packet_segsizetype;
108 int packet_segments;
109 int packet_seq;
110 int packet_replic_size;
111 int packet_key_frame;
112 int packet_padsize;
113 unsigned int packet_frag_offset;
114 unsigned int packet_frag_size;
115 int64_t packet_frag_timestamp;
116 int packet_multi_size;
117 int packet_obj_size;
118 int packet_time_delta;
119 int packet_time_start;
120 int64_t packet_pos;
121
122 int stream_index;
123
124
125 int64_t last_indexed_pts;
126 ASFIndex* index_ptr;
127 uint32_t nb_index_count;
128 uint32_t nb_index_memory_alloc;
129 uint16_t maximum_packet;
130
131 ASFStream* asf_st; ///< currently decoded stream
132 } ASFContext;
133
134 static const GUID asf_header = {
135 0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C
136 };
137
138 static const GUID file_header = {
139 0xA1, 0xDC, 0xAB, 0x8C, 0x47, 0xA9, 0xCF, 0x11, 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65
140 };
141
142 static const GUID stream_header = {
143 0x91, 0x07, 0xDC, 0xB7, 0xB7, 0xA9, 0xCF, 0x11, 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65
144 };
145
146 static const GUID ext_stream_header = {
147 0xCB, 0xA5, 0xE6, 0x14, 0x72, 0xC6, 0x32, 0x43, 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A
148 };
149
150 static const GUID audio_stream = {
151 0x40, 0x9E, 0x69, 0xF8, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B
152 };
153
154 static const GUID audio_conceal_none = {
155 // 0x40, 0xa4, 0xf1, 0x49, 0x4ece, 0x11d0, 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6
156 // New value lifted from avifile
157 0x00, 0x57, 0xfb, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b
158 };
159
160 static const GUID audio_conceal_spread = {
161 0x50, 0xCD, 0xC3, 0xBF, 0x8F, 0x61, 0xCF, 0x11, 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20
162 };
163
164 static const GUID video_stream = {
165 0xC0, 0xEF, 0x19, 0xBC, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B
166 };
167
168 static const GUID video_conceal_none = {
169 0x00, 0x57, 0xFB, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B
170 };
171
172 static const GUID command_stream = {
173 0xC0, 0xCF, 0xDA, 0x59, 0xE6, 0x59, 0xD0, 0x11, 0xA3, 0xAC, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6
174 };
175
176 static const GUID comment_header = {
177 0x33, 0x26, 0xb2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c
178 };
179
180 static const GUID codec_comment_header = {
181 0x40, 0x52, 0xD1, 0x86, 0x1D, 0x31, 0xD0, 0x11, 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6
182 };
183 static const GUID codec_comment1_header = {
184 0x41, 0x52, 0xd1, 0x86, 0x1D, 0x31, 0xD0, 0x11, 0xa3, 0xa4, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6
185 };
186
187 static const GUID data_header = {
188 0x36, 0x26, 0xb2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c
189 };
190
191 static const GUID head1_guid = {
192 0xb5, 0x03, 0xbf, 0x5f, 0x2E, 0xA9, 0xCF, 0x11, 0x8e, 0xe3, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65
193 };
194
195 static const GUID head2_guid = {
196 0x11, 0xd2, 0xd3, 0xab, 0xBA, 0xA9, 0xCF, 0x11, 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65
197 };
198
199 static const GUID extended_content_header = {
200 0x40, 0xA4, 0xD0, 0xD2, 0x07, 0xE3, 0xD2, 0x11, 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50
201 };
202
203 static const GUID simple_index_header = {
204 0x90, 0x08, 0x00, 0x33, 0xB1, 0xE5, 0xCF, 0x11, 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB
205 };
206
207 static const GUID ext_stream_embed_stream_header = {
208 0xe2, 0x65, 0xfb, 0x3a, 0xEF, 0x47, 0xF2, 0x40, 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43
209 };
210
211 static const GUID ext_stream_audio_stream = {
212 0x9d, 0x8c, 0x17, 0x31, 0xE1, 0x03, 0x28, 0x45, 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03
213 };
214
215 static const GUID metadata_header = {
216 0xea, 0xcb, 0xf8, 0xc5, 0xaf, 0x5b, 0x77, 0x48, 0x84, 0x67, 0xaa, 0x8c, 0x44, 0xfa, 0x4c, 0xca
217 };
218
219 /* I am not a number !!! This GUID is the one found on the PC used to
220 generate the stream */
221 static const GUID my_guid = {
222 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
223 };
224
225 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
226
227
228 // ASF data packet structure
229 // =========================
230 //
231 //
232 // -----------------------------------
233 // | Error Correction Data | Optional
234 // -----------------------------------
235 // | Payload Parsing Information (PPI) |
236 // -----------------------------------
237 // | Payload Data |
238 // -----------------------------------
239 // | Padding Data |
240 // -----------------------------------
241
242
243 // PPI_FLAG - Payload parsing information flags
244 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
245
246 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
247 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
248 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
249 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
250
251 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
252 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
253 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
254 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
255
256 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
257 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
258 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
259 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
260
261 // PL_FLAG - Payload flags
262 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
263 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
264 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
265 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
266
267 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
268 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
269 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
270 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
271
272 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
273 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
274 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
275 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
276
277 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
278 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
279
280 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
281 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
282 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
283
284 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000