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 ASFPayload
{
36 typedef struct ASFStream
{
48 int ds_span
; /* descrambling */
54 uint16_t stream_language_index
;
57 uint32_t palette
[256];
60 ASFPayload payload
[8];
63 typedef 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
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 */
89 typedef struct ASFIndex
{
90 uint32_t packet_number
;
91 uint16_t packet_count
;
96 extern const ff_asf_guid ff_asf_header
;
97 extern const ff_asf_guid ff_asf_file_header
;
98 extern const ff_asf_guid ff_asf_stream_header
;
99 extern const ff_asf_guid ff_asf_ext_stream_header
;
100 extern const ff_asf_guid ff_asf_audio_stream
;
101 extern const ff_asf_guid ff_asf_audio_conceal_none
;
102 extern const ff_asf_guid ff_asf_audio_conceal_spread
;
103 extern const ff_asf_guid ff_asf_video_stream
;
104 extern const ff_asf_guid ff_asf_jfif_media
;
105 extern const ff_asf_guid ff_asf_video_conceal_none
;
106 extern const ff_asf_guid ff_asf_command_stream
;
107 extern const ff_asf_guid ff_asf_comment_header
;
108 extern const ff_asf_guid ff_asf_codec_comment_header
;
109 extern const ff_asf_guid ff_asf_codec_comment1_header
;
110 extern const ff_asf_guid ff_asf_data_header
;
111 extern const ff_asf_guid ff_asf_head1_guid
;
112 extern const ff_asf_guid ff_asf_head2_guid
;
113 extern const ff_asf_guid ff_asf_extended_content_header
;
114 extern const ff_asf_guid ff_asf_simple_index_header
;
115 extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header
;
116 extern const ff_asf_guid ff_asf_ext_stream_audio_stream
;
117 extern const ff_asf_guid ff_asf_metadata_header
;
118 extern const ff_asf_guid ff_asf_metadata_library_header
;
119 extern const ff_asf_guid ff_asf_marker_header
;
120 extern const ff_asf_guid ff_asf_reserved_4
;
121 extern const ff_asf_guid ff_asf_my_guid
;
122 extern const ff_asf_guid ff_asf_language_guid
;
123 extern const ff_asf_guid ff_asf_content_encryption
;
124 extern const ff_asf_guid ff_asf_ext_content_encryption
;
125 extern const ff_asf_guid ff_asf_digital_signature
;
127 extern const AVMetadataConv ff_asf_metadata_conv
[];
129 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000
132 // ASF data packet structure
133 // =========================
136 // -----------------------------------
137 // | Error Correction Data | Optional
138 // -----------------------------------
139 // | Payload Parsing Information (PPI) |
140 // -----------------------------------
142 // -----------------------------------
144 // -----------------------------------
147 // PPI_FLAG - Payload parsing information flags
148 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1
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
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
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
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
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
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
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
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
188 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000
190 extern AVInputFormat ff_asf_demuxer
;
192 #endif /* AVFORMAT_ASF_H */