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
21 #ifndef AVFORMAT_ASF_H
22 #define AVFORMAT_ASF_H
29 #define PACKET_SIZE 3200
31 typedef struct ASFMainHeader {
32 ff_asf_guid guid; ///< generated by client computer
33 uint64_t file_size; /**< in bytes
34 * invalid if broadcasting */
35 uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601
36 * invalid if broadcasting */
37 uint64_t play_time; /**< play time, in 100-nanosecond units
38 * invalid if broadcasting */
39 uint64_t send_time; /**< time to send file, in 100-nanosecond units
40 * invalid if broadcasting (could be ignored) */
41 uint32_t preroll; /**< timestamp of the first packet, in milliseconds
42 * if nonzero - subtract from time */
43 uint32_t ignore; ///< preroll is 64bit - but let's just ignore it
44 uint32_t flags; /**< 0x01 - broadcast
46 * rest is reserved should be 0 */
47 uint32_t min_pktsize; /**< size of a data packet
48 * invalid if broadcasting */
49 uint32_t max_pktsize; /**< shall be the same as for min_pktsize
50 * invalid if broadcasting */
51 uint32_t max_bitrate; /**< bandwidth of stream in bps
52 * should be the sum of bitrates of the
53 * individual media streams */
57 typedef struct ASFIndex {
58 uint32_t packet_number;
59 uint16_t packet_count;
64 extern const ff_asf_guid ff_asf_header;
65 extern const ff_asf_guid ff_asf_file_header;
66 extern const ff_asf_guid ff_asf_stream_header;
67 extern const ff_asf_guid ff_asf_ext_stream_header;
68 extern const ff_asf_guid ff_asf_audio_stream;
69 extern const ff_asf_guid ff_asf_audio_conceal_none;
70 extern const ff_asf_guid ff_asf_audio_conceal_spread;
71 extern const ff_asf_guid ff_asf_video_stream;
72 extern const ff_asf_guid ff_asf_jfif_media;
73 extern const ff_asf_guid ff_asf_video_conceal_none;
74 extern const ff_asf_guid ff_asf_command_stream;
75 extern const ff_asf_guid ff_asf_comment_header;
76 extern const ff_asf_guid ff_asf_codec_comment_header;
77 extern const ff_asf_guid ff_asf_codec_comment1_header;
78 extern const ff_asf_guid ff_asf_data_header;
79 extern const ff_asf_guid ff_asf_head1_guid;
80 extern const ff_asf_guid ff_asf_head2_guid;
81 extern const ff_asf_guid ff_asf_extended_content_header;
82 extern const ff_asf_guid ff_asf_simple_index_header;
83 extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header;
84 extern const ff_asf_guid ff_asf_ext_stream_audio_stream;
85 extern const ff_asf_guid ff_asf_metadata_header;
86 extern const ff_asf_guid ff_asf_metadata_library_header;
87 extern const ff_asf_guid ff_asf_marker_header;
88 extern const ff_asf_guid ff_asf_reserved_4;
89 extern const ff_asf_guid ff_asf_my_guid;
90 extern const ff_asf_guid ff_asf_language_guid;
91 extern const ff_asf_guid ff_asf_content_encryption;
92 extern const ff_asf_guid ff_asf_ext_content_encryption;
93 extern const ff_asf_guid ff_asf_digital_signature;
95 extern const AVMetadataConv ff_asf_metadata_conv[];
97 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
100 // ASF data packet structure
101 // =========================
104 // -----------------------------------
105 // | Error Correction Data | Optional
106 // -----------------------------------
107 // | Payload Parsing Information (PPI) |
108 // -----------------------------------
110 // -----------------------------------
112 // -----------------------------------
115 // PPI_FLAG - Payload parsing information flags
116 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
118 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
119 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
120 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
121 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
123 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
124 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
125 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
126 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
128 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
129 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
130 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
131 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
133 // PL_FLAG - Payload flags
134 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
135 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
136 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
137 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
139 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
140 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
141 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
142 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
144 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
145 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
146 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
147 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
149 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
150 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
152 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
153 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
154 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
156 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
158 extern AVInputFormat ff_asf_demuxer;
160 #endif /* AVFORMAT_ASF_H */