The reader ignores the size of the ASF data object and keeps on
[libav.git] / libavformat / asf.h
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1/*
2 * Copyright (c) 2000, 2001 Fabrice Bellard.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
5509bffa 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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17 */
18#define PACKET_SIZE 3200
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19
20typedef struct {
21 int num;
615b92fd 22 unsigned char seq;
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23 /* use for reading */
24 AVPacket pkt;
25 int frag_offset;
26 int timestamp;
27 int64_t duration;
28
bb270c08 29 int ds_span; /* descrambling */
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30 int ds_packet_size;
31 int ds_chunk_size;
32 int ds_data_size;
33 int ds_silence_data;
115329f1 34
b6eaae39 35 int64_t packet_pos;
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36
37} ASFStream;
38
39typedef struct {
40 uint32_t v1;
41 uint16_t v2;
42 uint16_t v3;
43 uint8_t v4[8];
44} GUID;
45
46typedef struct {
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47 GUID guid; // generated by client computer
48 uint64_t file_size; // in bytes
542993b0 49 // invalid if broadcasting
bb270c08 50 uint64_t create_time; // time of creation, in 100-nanosecond units since 1.1.1601
542993b0 51 // invalid if broadcasting
bb270c08 52 uint64_t packets_count; // how many packets are there in the file
542993b0 53 // invalid if broadcasting
bb270c08 54 uint64_t play_time; // play time, in 100-nanosecond units
542993b0 55 // invalid if broadcasting
bb270c08 56 uint64_t send_time; // time to send file, in 100-nanosecond units
542993b0 57 // invalid if broadcasting (could be ignored)
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58 uint32_t preroll; // timestamp of the first packet, in milliseconds
59 // if nonzero - substract from time
542993b0 60 uint32_t ignore; // preroll is 64bit - but let's just ignore it
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61 uint32_t flags; // 0x01 - broadcast
62 // 0x02 - seekable
542993b0 63 // rest is reserved should be 0
bb270c08 64 uint32_t min_pktsize; // size of a data packet
542993b0 65 // invalid if broadcasting
bb270c08 66 uint32_t max_pktsize; // shall be the same as for min_pktsize
542993b0 67 // invalid if broadcasting
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68 uint32_t max_bitrate; // bandwith of stream in bps
69 // should be the sum of bitrates of the
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70 // individual media streams
71} ASFMainHeader;
72
73
74typedef struct {
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75 uint32_t packet_number;
76 uint16_t packet_count;
77} ASFIndex;
78
79
80typedef struct {
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81 uint32_t seqno;
82 unsigned int packet_size;
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83 int is_streamed;
84 int asfid2avid[128]; /* conversion table from asf ID 2 AVStream ID */
bb270c08 85 ASFStream streams[128]; /* it's max number and it's not that big */
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86 /* non streamed additonnal info */
87 int64_t nb_packets;
88 int64_t duration; /* in 100ns units */
89 /* packet filling */
615b92fd 90 unsigned char multi_payloads_present;
542993b0 91 int packet_size_left;
615b92fd 92 int prev_packet_sent_time;
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93 int packet_timestamp_start;
94 int packet_timestamp_end;
615b92fd 95 unsigned int packet_nb_payloads;
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96 int packet_nb_frames;
97 uint8_t packet_buf[PACKET_SIZE];
98 ByteIOContext pb;
99 /* only for reading */
100 uint64_t data_offset; /* begining of the first data packet */
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101 uint64_t data_object_offset; /* data object offset (excl. GUID & size)*/
102 uint64_t data_object_size; /* size of the data object */
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103
104 ASFMainHeader hdr;
105
106 int packet_flags;
107 int packet_property;
108 int packet_timestamp;
109 int packet_segsizetype;
110 int packet_segments;
111 int packet_seq;
112 int packet_replic_size;
113 int packet_key_frame;
114 int packet_padsize;
115 int packet_frag_offset;
116 int packet_frag_size;
117 int packet_frag_timestamp;
118 int packet_multi_size;
119 int packet_obj_size;
120 int packet_time_delta;
121 int packet_time_start;
b6eaae39 122 int64_t packet_pos;
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123
124 int stream_index;
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125
126
127 int64_t last_indexed_pts;
128 ASFIndex* index_ptr;
129 uint32_t nb_index_count;
130 uint32_t nb_index_memory_alloc;
131 uint16_t maximum_packet;
132
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133 ASFStream* asf_st; /* currently decoded stream */
134} ASFContext;
135
136static const GUID asf_header = {
137 0x75B22630, 0x668E, 0x11CF, { 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C },
138};
139
140static const GUID file_header = {
141 0x8CABDCA1, 0xA947, 0x11CF, { 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 },
142};
143
144static const GUID stream_header = {
145 0xB7DC0791, 0xA9B7, 0x11CF, { 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 },
146};
147
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148static const GUID ext_stream_header = {
149 0x14E6A5CB, 0xC672, 0x4332, { 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A },
150};
151
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152static const GUID audio_stream = {
153 0xF8699E40, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
154};
155
156static const GUID audio_conceal_none = {
157 // 0x49f1a440, 0x4ece, 0x11d0, { 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6 },
158 // New value lifted from avifile
159 0x20fb5700, 0x5b55, 0x11cf, { 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b },
160};
161
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162static const GUID audio_conceal_spread = {
163 0xBFC3CD50, 0x618F, 0x11CF, { 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20 },
164};
165
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166static const GUID video_stream = {
167 0xBC19EFC0, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
168};
169
170static const GUID video_conceal_none = {
171 0x20FB5700, 0x5B55, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
172};
173
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174static const GUID command_stream = {
175 0x59DACFC0, 0x59E6, 0x11D0, { 0xA3, 0xAC, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 },
176};
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177
178static const GUID comment_header = {
179 0x75b22633, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c },
180};
181
182static const GUID codec_comment_header = {
183 0x86D15240, 0x311D, 0x11D0, { 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6 },
184};
185static const GUID codec_comment1_header = {
186 0x86d15241, 0x311d, 0x11d0, { 0xa3, 0xa4, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6 },
187};
188
189static const GUID data_header = {
190 0x75b22636, 0x668e, 0x11cf, { 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c },
191};
192
193static const GUID head1_guid = {
194 0x5fbf03b5, 0xa92e, 0x11cf, { 0x8e, 0xe3, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 },
195};
196
197static const GUID head2_guid = {
198 0xabd3d211, 0xa9ba, 0x11cf, { 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65 },
199};
200
201static const GUID extended_content_header = {
202 0xD2D0A440, 0xE307, 0x11D2, { 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50 },
203};
204
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205static const GUID simple_index_header = {
206 0x33000890, 0xE5B1, 0x11CF, { 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB },
207};
208
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209static const GUID ext_stream_embed_stream_header = {
210 0x3afb65e2, 0x47ef, 0x40f2, { 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43}
211};
212
213static const GUID ext_stream_audio_stream = {
214 0x31178c9d, 0x03e1, 0x4528, { 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03}
215};
216
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217/* I am not a number !!! This GUID is the one found on the PC used to
218 generate the stream */
219static const GUID my_guid = {
220 0, 0, 0, { 0, 0, 0, 0, 0, 0, 0, 0 },
221};
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222
223#define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
224
225
226// ASF data packet structure
227// =========================
228//
229//
230// -----------------------------------
231// | Error Correction Data | Optional
232// -----------------------------------
233// | Payload Parsing Information (PPI) |
234// -----------------------------------
235// | Payload Data |
236// -----------------------------------
237// | Padding Data |
238// -----------------------------------
239
240
241// PPI_FLAG - Payload parsing information flags
242#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
243
244#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
245#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
246#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
247#define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
248
249#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
250#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
251#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
252#define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
253
254#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
255#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
256#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
257#define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
258
259// PL_FLAG - Payload flags
260#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
261#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
262#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
263#define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
264
265#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
266#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
267#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
268#define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
269
270#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
271#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
272#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
273#define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
274
275#define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
276#define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
277
278#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
279#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
280#define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
281
282#define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000