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Imported Debian version 2.5.2~trusty
[deb_ffmpeg.git] / ffmpeg / libavformat / asf.h
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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
29#define PACKET_SIZE 3200
30
31typedef struct ASFPayload {
32 uint8_t type;
33 uint16_t size;
34} ASFPayload;
35
36typedef struct ASFStream {
37 int num;
38 unsigned char seq;
39 /* use for reading */
40 AVPacket pkt;
41 int frag_offset;
42 int packet_obj_size;
43 int timestamp;
44 int64_t duration;
45 int skip_to_key;
46 int pkt_clean;
47
48 int ds_span; /* descrambling */
49 int ds_packet_size;
50 int ds_chunk_size;
51
52 int64_t packet_pos;
53
54 uint16_t stream_language_index;
55
56 int palette_changed;
57 uint32_t palette[256];
58
59 int payload_ext_ct;
60 ASFPayload payload[8];
61} ASFStream;
62
63typedef struct ASFMainHeader {
64 ff_asf_guid guid; ///< generated by client computer
65 uint64_t file_size; /**< in bytes
66 * invalid if broadcasting */
67 uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601
68 * invalid if broadcasting */
69 uint64_t play_time; /**< play time, in 100-nanosecond units
70 * invalid if broadcasting */
71 uint64_t send_time; /**< time to send file, in 100-nanosecond units
72 * invalid if broadcasting (could be ignored) */
73 uint32_t preroll; /**< timestamp of the first packet, in milliseconds
74 * if nonzero - subtract from time */
75 uint32_t ignore; ///< preroll is 64bit - but let's just ignore it
76 uint32_t flags; /**< 0x01 - broadcast
77 * 0x02 - seekable
78 * rest is reserved should be 0 */
79 uint32_t min_pktsize; /**< size of a data packet
80 * invalid if broadcasting */
81 uint32_t max_pktsize; /**< shall be the same as for min_pktsize
82 * invalid if broadcasting */
83 uint32_t max_bitrate; /**< bandwidth of stream in bps
84 * should be the sum of bitrates of the
85 * individual media streams */
86} ASFMainHeader;
87
88
89typedef struct ASFIndex {
90 uint32_t packet_number;
91 uint16_t packet_count;
92 uint64_t send_time;
93 uint64_t offset;
94} ASFIndex;
95
96extern const ff_asf_guid ff_asf_header;
97extern const ff_asf_guid ff_asf_file_header;
98extern const ff_asf_guid ff_asf_stream_header;
99extern const ff_asf_guid ff_asf_ext_stream_header;
100extern const ff_asf_guid ff_asf_audio_stream;
101extern const ff_asf_guid ff_asf_audio_conceal_none;
102extern const ff_asf_guid ff_asf_audio_conceal_spread;
103extern const ff_asf_guid ff_asf_video_stream;
104extern const ff_asf_guid ff_asf_jfif_media;
105extern const ff_asf_guid ff_asf_video_conceal_none;
106extern const ff_asf_guid ff_asf_command_stream;
107extern const ff_asf_guid ff_asf_comment_header;
108extern const ff_asf_guid ff_asf_codec_comment_header;
109extern const ff_asf_guid ff_asf_codec_comment1_header;
110extern const ff_asf_guid ff_asf_data_header;
111extern const ff_asf_guid ff_asf_head1_guid;
112extern const ff_asf_guid ff_asf_head2_guid;
113extern const ff_asf_guid ff_asf_extended_content_header;
114extern const ff_asf_guid ff_asf_simple_index_header;
115extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header;
116extern const ff_asf_guid ff_asf_ext_stream_audio_stream;
117extern const ff_asf_guid ff_asf_metadata_header;
118extern const ff_asf_guid ff_asf_metadata_library_header;
119extern const ff_asf_guid ff_asf_marker_header;
120extern const ff_asf_guid ff_asf_reserved_4;
121extern const ff_asf_guid ff_asf_my_guid;
122extern const ff_asf_guid ff_asf_language_guid;
123extern const ff_asf_guid ff_asf_content_encryption;
124extern const ff_asf_guid ff_asf_ext_content_encryption;
125extern const ff_asf_guid ff_asf_digital_signature;
126
127extern const AVMetadataConv ff_asf_metadata_conv[];
128
129#define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
130
131
132// ASF data packet structure
133// =========================
134//
135//
136// -----------------------------------
137// | Error Correction Data | Optional
138// -----------------------------------
139// | Payload Parsing Information (PPI) |
140// -----------------------------------
141// | Payload Data |
142// -----------------------------------
143// | Padding Data |
144// -----------------------------------
145
146
147// PPI_FLAG - Payload parsing information flags
148#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
149
150#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010
151#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100
152#define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110
153#define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110
154
155#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000
156#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000
157#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000
158#define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000
159
160#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000
161#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000
162#define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000
163#define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000
164
165// PL_FLAG - Payload flags
166#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001
167#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010
168#define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011
169#define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011
170
171#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100
172#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000
173#define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100
174#define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100
175
176#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000
177#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000
178#define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000
179#define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000
180
181#define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
182#define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000
183
184#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000
185#define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000
186#define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000
187
188#define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
189
190extern AVInputFormat ff_asf_demuxer;
191
192#endif /* AVFORMAT_ASF_H */
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