FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
asf.h
Go to the documentation of this file.
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 #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 typedef enum ASFDataType {
32  ASF_BOOL = 2,
33  ASF_DWORD = 3,
34  ASF_QWORD = 4,
35  ASF_WORD = 5,
36  ASF_GUID = 6,
38 
39 typedef struct ASFMainHeader {
40  ff_asf_guid guid; ///< generated by client computer
41  uint64_t file_size; /**< in bytes
42  * invalid if broadcasting */
43  uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601
44  * invalid if broadcasting */
45  uint64_t play_time; /**< play time, in 100-nanosecond units
46  * invalid if broadcasting */
47  uint64_t send_time; /**< time to send file, in 100-nanosecond units
48  * invalid if broadcasting (could be ignored) */
49  uint32_t preroll; /**< timestamp of the first packet, in milliseconds
50  * if nonzero - subtract from time */
51  uint32_t ignore; ///< preroll is 64bit - but let's just ignore it
52  uint32_t flags; /**< 0x01 - broadcast
53  * 0x02 - seekable
54  * rest is reserved should be 0 */
55  uint32_t min_pktsize; /**< size of a data packet
56  * invalid if broadcasting */
57  uint32_t max_pktsize; /**< shall be the same as for min_pktsize
58  * invalid if broadcasting */
59  uint32_t max_bitrate; /**< bandwidth of stream in bps
60  * should be the sum of bitrates of the
61  * individual media streams */
63 
64 
65 typedef struct ASFIndex {
66  uint32_t packet_number;
67  uint16_t packet_count;
68  uint64_t send_time;
69  uint64_t offset;
70 } ASFIndex;
71 
72 extern const ff_asf_guid ff_asf_header;
73 extern const ff_asf_guid ff_asf_file_header;
76 extern const ff_asf_guid ff_asf_audio_stream;
79 extern const ff_asf_guid ff_asf_video_stream;
80 extern const ff_asf_guid ff_asf_jfif_media;
86 extern const ff_asf_guid ff_asf_data_header;
87 extern const ff_asf_guid ff_asf_head1_guid;
88 extern const ff_asf_guid ff_asf_head2_guid;
96 extern const ff_asf_guid ff_asf_reserved_4;
97 extern const ff_asf_guid ff_asf_my_guid;
105 
106 extern const AVMetadataConv ff_asf_metadata_conv[];
107 
108 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
109 
110 
111 // ASF data packet structure
112 // =========================
113 //
114 //
115 // -----------------------------------
116 // | Error Correction Data | Optional
117 // -----------------------------------
118 // | Payload Parsing Information (PPI) |
119 // -----------------------------------
120 // | Payload Data |
121 // -----------------------------------
122 // | Padding Data |
123 // -----------------------------------
124 
125 
126 // PPI_FLAG - Payload parsing information flags
127 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
128 
129 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
130 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
131 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
132 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
133 
134 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
135 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
136 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
137 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
138 
139 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
140 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
141 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
142 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
143 
144 // PL_FLAG - Payload flags
145 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
146 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
147 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
148 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
149 
150 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
151 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
152 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
153 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
154 
155 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
156 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
157 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
158 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
159 
160 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
161 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
162 
163 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
164 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
165 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
166 
167 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
168 
170 
171 #endif /* AVFORMAT_ASF_H */
const ff_asf_guid ff_asf_extended_stream_properties_object
Definition: asf.c:146
const ff_asf_guid ff_asf_video_stream
Definition: asf.c:53
Definition: asf.h:65
const ff_asf_guid ff_asf_content_encryption
Definition: asf.c:134
const ff_asf_guid ff_asf_digital_signature
Definition: asf.c:142
const ff_asf_guid ff_asf_ext_stream_embed_stream_header
Definition: asf.c:100
const ff_asf_guid ff_asf_head1_guid
Definition: asf.c:84
const ff_asf_guid ff_asf_my_guid
Definition: asf.c:126
const ff_asf_guid ff_asf_simple_index_header
Definition: asf.c:96
uint64_t offset
Definition: asf.h:69
const ff_asf_guid ff_asf_marker_header
Definition: asf.c:116
uint32_t min_pktsize
size of a data packet invalid if broadcasting
Definition: asf.h:55
const ff_asf_guid ff_asf_comment_header
Definition: asf.c:69
uint32_t packet_number
Definition: asf.h:66
const ff_asf_guid ff_asf_video_conceal_none
Definition: asf.c:61
const ff_asf_guid ff_asf_language_guid
Definition: asf.c:130
const ff_asf_guid ff_asf_jfif_media
Definition: asf.c:57
internal metadata API header see avformat.h or the public API!
uint32_t flags
0x01 - broadcast 0x02 - seekable rest is reserved should be 0
Definition: asf.h:52
const ff_asf_guid ff_asf_audio_conceal_spread
Definition: asf.c:49
const ff_asf_guid ff_asf_codec_comment1_header
Definition: asf.c:76
const ff_asf_guid ff_asf_ext_stream_audio_stream
Definition: asf.c:104
uint64_t send_time
time to send file, in 100-nanosecond units invalid if broadcasting (could be ignored) ...
Definition: asf.h:47
uint64_t file_size
in bytes invalid if broadcasting
Definition: asf.h:41
ff_asf_guid guid
generated by client computer
Definition: asf.h:40
const ff_asf_guid ff_asf_data_header
Definition: asf.c:80
Definition: asf.h:32
uint32_t max_pktsize
shall be the same as for min_pktsize invalid if broadcasting
Definition: asf.h:57
const ff_asf_guid ff_asf_codec_comment_header
Definition: asf.c:73
const ff_asf_guid ff_asf_mutex_language
Definition: asf.c:154
const ff_asf_guid ff_asf_stream_header
Definition: asf.c:31
const AVMetadataConv ff_asf_metadata_conv[]
Definition: asf.c:159
uint64_t send_time
Definition: asf.h:68
const ff_asf_guid ff_asf_group_mutual_exclusion_object
Definition: asf.c:150
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
const ff_asf_guid ff_asf_metadata_library_header
Definition: asf.c:112
const ff_asf_guid ff_asf_audio_conceal_none
Definition: asf.c:43
const ff_asf_guid ff_asf_header
Definition: asf.c:23
uint8_t ff_asf_guid[16]
Definition: riff.h:89
uint32_t ignore
preroll is 64bit - but let's just ignore it
Definition: asf.h:51
uint64_t create_time
time of creation, in 100-nanosecond units since 1.1.1601 invalid if broadcasting
Definition: asf.h:43
uint64_t play_time
play time, in 100-nanosecond units invalid if broadcasting
Definition: asf.h:45
AVInputFormat ff_asf_demuxer
Definition: asfdec_f.c:1684
ASFDataType
Definition: asf.h:29
const ff_asf_guid ff_asf_command_stream
Definition: asf.c:65
const ff_asf_guid ff_asf_ext_stream_header
Definition: asf.c:35
const ff_asf_guid ff_asf_extended_content_header
Definition: asf.c:92
uint32_t preroll
timestamp of the first packet, in milliseconds if nonzero - subtract from time
Definition: asf.h:49
Main libavformat public API header.
const ff_asf_guid ff_asf_head2_guid
Definition: asf.c:88
Definition: asf.h:36
const ff_asf_guid ff_asf_ext_content_encryption
Definition: asf.c:138
Definition: asf.h:35
const ff_asf_guid ff_asf_metadata_header
Definition: asf.c:108
const ff_asf_guid ff_asf_audio_stream
Definition: asf.c:39
const ff_asf_guid ff_asf_file_header
Definition: asf.c:27
uint16_t packet_count
Definition: asf.h:67
Definition: asf.h:34
Definition: asf.h:33
uint32_t max_bitrate
bandwidth of stream in bps should be the sum of bitrates of the individual media streams ...
Definition: asf.h:59
const ff_asf_guid ff_asf_reserved_4
Definition: asf.c:120