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path: root/libavformat/asf.h (plain)
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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
29typedef enum ASFDataType {
30 ASF_UNICODE = 0,
31 ASF_BYTE_ARRAY = 1,
32 ASF_BOOL = 2,
33 ASF_DWORD = 3,
34 ASF_QWORD = 4,
35 ASF_WORD = 5,
36 ASF_GUID = 6,
37}ASFDataType;
38
39typedef 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 64 bits - 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 */
62} ASFMainHeader;
63
64
65typedef struct ASFIndex {
66 uint32_t packet_number;
67 uint16_t packet_count;
68 uint64_t send_time;
69 uint64_t offset;
70} ASFIndex;
71
72extern const ff_asf_guid ff_asf_header;
73extern const ff_asf_guid ff_asf_file_header;
74extern const ff_asf_guid ff_asf_stream_header;
75extern const ff_asf_guid ff_asf_ext_stream_header;
76extern const ff_asf_guid ff_asf_audio_stream;
77extern const ff_asf_guid ff_asf_audio_conceal_none;
78extern const ff_asf_guid ff_asf_audio_conceal_spread;
79extern const ff_asf_guid ff_asf_video_stream;
80extern const ff_asf_guid ff_asf_jfif_media;
81extern const ff_asf_guid ff_asf_video_conceal_none;
82extern const ff_asf_guid ff_asf_command_stream;
83extern const ff_asf_guid ff_asf_comment_header;
84extern const ff_asf_guid ff_asf_codec_comment_header;
85extern const ff_asf_guid ff_asf_codec_comment1_header;
86extern const ff_asf_guid ff_asf_data_header;
87extern const ff_asf_guid ff_asf_head1_guid;
88extern const ff_asf_guid ff_asf_head2_guid;
89extern const ff_asf_guid ff_asf_extended_content_header;
90extern const ff_asf_guid ff_asf_simple_index_header;
91extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header;
92extern const ff_asf_guid ff_asf_ext_stream_audio_stream;
93extern const ff_asf_guid ff_asf_metadata_header;
94extern const ff_asf_guid ff_asf_metadata_library_header;
95extern const ff_asf_guid ff_asf_marker_header;
96extern const ff_asf_guid ff_asf_reserved_4;
97extern const ff_asf_guid ff_asf_my_guid;
98extern const ff_asf_guid ff_asf_language_guid;
99extern const ff_asf_guid ff_asf_content_encryption;
100extern const ff_asf_guid ff_asf_ext_content_encryption;
101extern const ff_asf_guid ff_asf_digital_signature;
102extern const ff_asf_guid ff_asf_extended_stream_properties_object;
103extern const ff_asf_guid ff_asf_group_mutual_exclusion_object;
104extern const ff_asf_guid ff_asf_mutex_language;
105
106extern 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
169extern AVInputFormat ff_asf_demuxer;
170
171#endif /* AVFORMAT_ASF_H */
172
generated by cgit at 2024-05-17 02:00:15 (GMT)