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 { 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 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 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 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; 74 extern const ff_asf_guid ff_asf_stream_header; 75 extern const ff_asf_guid ff_asf_ext_stream_header; 76 extern const ff_asf_guid ff_asf_audio_stream; 77 extern const ff_asf_guid ff_asf_audio_conceal_spread; 78 extern const ff_asf_guid ff_asf_video_stream; 79 extern const ff_asf_guid ff_asf_jfif_media; 80 extern const ff_asf_guid ff_asf_video_conceal_none; 81 extern const ff_asf_guid ff_asf_command_stream; 82 extern const ff_asf_guid ff_asf_comment_header; 83 extern const ff_asf_guid ff_asf_codec_comment_header; 84 extern const ff_asf_guid ff_asf_codec_comment1_header; 85 extern const ff_asf_guid ff_asf_data_header; 86 extern const ff_asf_guid ff_asf_head1_guid; 87 extern const ff_asf_guid ff_asf_head2_guid; 88 extern const ff_asf_guid ff_asf_extended_content_header; 89 extern const ff_asf_guid ff_asf_simple_index_header; 90 extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header; 91 extern const ff_asf_guid ff_asf_ext_stream_audio_stream; 92 extern const ff_asf_guid ff_asf_metadata_header; 93 extern const ff_asf_guid ff_asf_metadata_library_header; 94 extern const ff_asf_guid ff_asf_marker_header; 95 extern const ff_asf_guid ff_asf_reserved_4; 96 extern const ff_asf_guid ff_asf_my_guid; 97 extern const ff_asf_guid ff_asf_language_guid; 98 extern const ff_asf_guid ff_asf_content_encryption; 99 extern const ff_asf_guid ff_asf_ext_content_encryption; 100 extern const ff_asf_guid ff_asf_digital_signature; 101 extern const ff_asf_guid ff_asf_extended_stream_properties_object; 102 extern const ff_asf_guid ff_asf_group_mutual_exclusion_object; 103 extern const ff_asf_guid ff_asf_mutex_language; 104 105 extern const AVMetadataConv ff_asf_metadata_conv[]; 106 107 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000 108 109 110 // ASF data packet structure 111 // ========================= 112 // 113 // 114 // ----------------------------------- 115 // | Error Correction Data | Optional 116 // ----------------------------------- 117 // | Payload Parsing Information (PPI) | 118 // ----------------------------------- 119 // | Payload Data | 120 // ----------------------------------- 121 // | Padding Data | 122 // ----------------------------------- 123 124 125 // PPI_FLAG - Payload parsing information flags 126 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1 127 128 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010 129 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100 130 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110 131 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110 132 133 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000 134 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000 135 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000 136 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000 137 138 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000 139 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000 140 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000 141 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000 142 143 // PL_FLAG - Payload flags 144 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001 145 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010 146 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011 147 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011 148 149 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100 150 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000 151 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100 152 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100 153 154 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000 155 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000 156 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000 157 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000 158 159 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 160 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000 161 162 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 163 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000 164 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000 165 166 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000 167 168 #endif /* AVFORMAT_ASF_H */ 169