Libav
asf.h
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1 /*
2  * Copyright (c) 2000, 2001 Fabrice Bellard
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVFORMAT_ASF_H
22 #define AVFORMAT_ASF_H
23 
24 #include <stdint.h>
25 #include "avformat.h"
26 #include "metadata.h"
27 #include "riff.h"
28 
29 #define PACKET_SIZE 3200
30 
31 typedef struct ASFStream {
32  int num;
33  unsigned char seq;
34  /* use for reading */
37  int timestamp;
38  int64_t duration;
39 
40  int ds_span; /* descrambling */
43 
44  int64_t packet_pos;
45 
47 
49  uint32_t palette[256];
50 } ASFStream;
51 
52 typedef struct ASFMainHeader {
54  uint64_t file_size;
56  uint64_t create_time;
58  uint64_t play_time;
60  uint64_t send_time;
62  uint32_t preroll;
64  uint32_t ignore;
65  uint32_t flags;
68  uint32_t min_pktsize;
70  uint32_t max_pktsize;
72  uint32_t max_bitrate;
76 
77 
78 typedef struct ASFIndex {
79  uint32_t packet_number;
80  uint16_t packet_count;
81  uint64_t send_time;
82  uint64_t offset;
83 } ASFIndex;
84 
85 extern const ff_asf_guid ff_asf_header;
86 extern const ff_asf_guid ff_asf_file_header;
89 extern const ff_asf_guid ff_asf_audio_stream;
92 extern const ff_asf_guid ff_asf_video_stream;
93 extern const ff_asf_guid ff_asf_jfif_media;
99 extern const ff_asf_guid ff_asf_data_header;
100 extern const ff_asf_guid ff_asf_head1_guid;
101 extern const ff_asf_guid ff_asf_head2_guid;
108 extern const ff_asf_guid ff_asf_marker_header;
109 extern const ff_asf_guid ff_asf_reserved_4;
110 extern const ff_asf_guid ff_asf_my_guid;
111 extern const ff_asf_guid ff_asf_language_guid;
115 
116 extern const AVMetadataConv ff_asf_metadata_conv[];
117 
118 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
119 
120 
121 // ASF data packet structure
122 // =========================
123 //
124 //
125 // -----------------------------------
126 // | Error Correction Data | Optional
127 // -----------------------------------
128 // | Payload Parsing Information (PPI) |
129 // -----------------------------------
130 // | Payload Data |
131 // -----------------------------------
132 // | Padding Data |
133 // -----------------------------------
134 
135 
136 // PPI_FLAG - Payload parsing information flags
137 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
138 
139 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
140 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
141 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
142 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
143 
144 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
145 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
146 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
147 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
148 
149 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
150 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
151 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
152 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
153 
154 // PL_FLAG - Payload flags
155 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
156 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
157 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
158 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
159 
160 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
161 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
162 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
163 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
164 
165 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
166 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
167 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
168 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
169 
170 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
171 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
172 
173 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
174 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
175 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
176 
177 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
178 
180 
181 #endif /* AVFORMAT_ASF_H */