2 * Copyright (c) 2000, 2001 Fabrice Bellard.
4 * This file is part of FFmpeg.
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.
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.
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
20 #define PACKET_SIZE 3200
31 int ds_span; /* descrambling */
49 GUID guid; // generated by client computer
50 uint64_t file_size; // in bytes
51 // invalid if broadcasting
52 uint64_t create_time; // time of creation, in 100-nanosecond units since 1.1.1601
53 // invalid if broadcasting
54 uint64_t packets_count; // how many packets are there in the file
55 // invalid if broadcasting
56 uint64_t play_time; // play time, in 100-nanosecond units
57 // invalid if broadcasting
58 uint64_t send_time; // time to send file, in 100-nanosecond units
59 // invalid if broadcasting (could be ignored)
60 uint32_t preroll; // timestamp of the first packet, in milliseconds
61 // if nonzero - substract from time
62 uint32_t ignore; // preroll is 64bit - but let's just ignore it
63 uint32_t flags; // 0x01 - broadcast
65 // rest is reserved should be 0
66 uint32_t min_pktsize; // size of a data packet
67 // invalid if broadcasting
68 uint32_t max_pktsize; // shall be the same as for min_pktsize
69 // invalid if broadcasting
70 uint32_t max_bitrate; // bandwith of stream in bps
71 // should be the sum of bitrates of the
72 // individual media streams
77 uint32_t packet_number;
78 uint16_t packet_count;
84 unsigned int packet_size;
86 int asfid2avid[128]; /* conversion table from asf ID 2 AVStream ID */
87 ASFStream streams[128]; /* it's max number and it's not that big */
88 /* non streamed additonnal info */
90 int64_t duration; /* in 100ns units */
92 unsigned char multi_payloads_present;
94 int prev_packet_sent_time;
95 int packet_timestamp_start;
96 int packet_timestamp_end;
97 unsigned int packet_nb_payloads;
99 uint8_t packet_buf[PACKET_SIZE];
101 /* only for reading */
102 uint64_t data_offset; /* begining of the first data packet */
103 uint64_t data_object_offset; /* data object offset (excl. GUID & size)*/
104 uint64_t data_object_size; /* size of the data object */
111 int packet_timestamp;
112 int packet_segsizetype;
115 int packet_replic_size;
116 int packet_key_frame;
118 int packet_frag_offset;
119 int packet_frag_size;
120 int packet_frag_timestamp;
121 int packet_multi_size;
123 int packet_time_delta;
124 int packet_time_start;
130 int64_t last_indexed_pts;
132 uint32_t nb_index_count;
133 uint32_t nb_index_memory_alloc;
134 uint16_t maximum_packet;
136 ASFStream* asf_st; /* currently decoded stream */
139 static const GUID asf_header = {
140 0x75B22630, 0x668E, 0x11CF, { 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C },
143 static const GUID file_header = {
144 0x8CABDCA1, 0xA947, 0x11CF, { 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 },
147 static const GUID stream_header = {
148 0xB7DC0791, 0xA9B7, 0x11CF, { 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 },
151 static const GUID ext_stream_header = {
152 0x14E6A5CB, 0xC672, 0x4332, { 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A },
155 static const GUID audio_stream = {
156 0xF8699E40, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
159 static const GUID audio_conceal_none = {
160 // 0x49f1a440, 0x4ece, 0x11d0, { 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6 },
161 // New value lifted from avifile
162 0x20fb5700, 0x5b55, 0x11cf, { 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b },
165 static const GUID audio_conceal_spread = {
166 0xBFC3CD50, 0x618F, 0x11CF, { 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20 },
169 static const GUID video_stream = {
170 0xBC19EFC0, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
173 static const GUID video_conceal_none = {
174 0x20FB5700, 0x5B55, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
177 static const GUID command_stream = {
178 0x59DACFC0, 0x59E6, 0x11D0, { 0xA3, 0xAC, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 },
181 static const GUID comment_header = {
182 0x75b22633, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c },
185 static const GUID codec_comment_header = {
186 0x86D15240, 0x311D, 0x11D0, { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 },
188 static const GUID codec_comment1_header = {
189 0x86d15241, 0x311d, 0x11d0, { 0xa3, 0xa4, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6 },
192 static const GUID data_header = {
193 0x75b22636, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c },
196 static const GUID head1_guid = {
197 0x5fbf03b5, 0xa92e, 0x11cf, { 0x8e, 0xe3, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 },
200 static const GUID head2_guid = {
201 0xabd3d211, 0xa9ba, 0x11cf, { 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 },
204 static const GUID extended_content_header = {
205 0xD2D0A440, 0xE307, 0x11D2, { 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50 },
208 static const GUID simple_index_header = {
209 0x33000890, 0xE5B1, 0x11CF, { 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB },
212 static const GUID ext_stream_embed_stream_header = {
213 0x3afb65e2, 0x47ef, 0x40f2, { 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43}
216 static const GUID ext_stream_audio_stream = {
217 0x31178c9d, 0x03e1, 0x4528, { 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03}
220 /* I am not a number !!! This GUID is the one found on the PC used to
221 generate the stream */
222 static const GUID my_guid = {
223 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 },
226 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
229 // ASF data packet structure
230 // =========================
233 // -----------------------------------
234 // | Error Correction Data | Optional
235 // -----------------------------------
236 // | Payload Parsing Information (PPI) |
237 // -----------------------------------
239 // -----------------------------------
241 // -----------------------------------
244 // PPI_FLAG - Payload parsing information flags
245 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
247 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
248 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
249 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
250 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
252 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
253 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
254 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
255 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
257 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
258 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
259 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
260 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
262 // PL_FLAG - Payload flags
263 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
264 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
265 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
266 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
268 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
269 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
270 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
271 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
273 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
274 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
275 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
276 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
278 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
279 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
281 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
282 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
283 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
285 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000