FFmpeg: libavformat/asf.h Source File

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libavformat

asf.h

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1 /*

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 */

21 #ifndef AVFORMAT_ASF_H

22 #define AVFORMAT_ASF_H

24 #include <stdint.h>

25 #include "avformat.h"

26 #include "metadata.h"

27 #include "riff.h"

29 #define PACKET_SIZE 3200

31 typedef struct ASFPayload {

32 uint8_t type;

33 uint16_t size;

34 } ASFPayload;

36 typedef 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;

47 int ds_span; /* descrambling */

48 int ds_packet_size;

49 int ds_chunk_size;

51 int64_t packet_pos;

53 uint16_t stream_language_index;

55 int palette_changed;

56 uint32_t palette[256];

58 int payload_ext_ct;

59 ASFPayload payload[8];

60 } ASFStream;

62 typedef struct ASFMainHeader {

63 ff_asf_guid guid; ///< generated by client computer

64 uint64_t file_size; /**< in bytes

65 * invalid if broadcasting */

66 uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601

67 * invalid if broadcasting */

68 uint64_t play_time; /**< play time, in 100-nanosecond units

69 * invalid if broadcasting */

70 uint64_t send_time; /**< time to send file, in 100-nanosecond units

71 * invalid if broadcasting (could be ignored) */

72 uint32_t preroll; /**< timestamp of the first packet, in milliseconds

73 * if nonzero - subtract from time */

74 uint32_t ignore; ///< preroll is 64bit - but let's just ignore it

75 uint32_t flags; /**< 0x01 - broadcast

76 * 0x02 - seekable

77 * rest is reserved should be 0 */

78 uint32_t min_pktsize; /**< size of a data packet

79 * invalid if broadcasting */

80 uint32_t max_pktsize; /**< shall be the same as for min_pktsize

81 * invalid if broadcasting */

82 uint32_t max_bitrate; /**< bandwidth of stream in bps

83 * should be the sum of bitrates of the

84 * individual media streams */

85 } ASFMainHeader;

88 typedef struct ASFIndex {

89 uint32_t packet_number;

90 uint16_t packet_count;

91 uint64_t send_time;

92 uint64_t offset;

93 } ASFIndex;

95 extern const ff_asf_guid ff_asf_header;

96 extern const ff_asf_guid ff_asf_file_header;

97 extern const ff_asf_guid ff_asf_stream_header;

98 extern const ff_asf_guid ff_asf_ext_stream_header;

99 extern const ff_asf_guid ff_asf_audio_stream;

100 extern const ff_asf_guid ff_asf_audio_conceal_none;

101 extern const ff_asf_guid ff_asf_audio_conceal_spread;

102 extern const ff_asf_guid ff_asf_video_stream;

103 extern const ff_asf_guid ff_asf_jfif_media;

104 extern const ff_asf_guid ff_asf_video_conceal_none;

105 extern const ff_asf_guid ff_asf_command_stream;

106 extern const ff_asf_guid ff_asf_comment_header;

107 extern const ff_asf_guid ff_asf_codec_comment_header;

108 extern const ff_asf_guid ff_asf_codec_comment1_header;

109 extern const ff_asf_guid ff_asf_data_header;

110 extern const ff_asf_guid ff_asf_head1_guid;

111 extern const ff_asf_guid ff_asf_head2_guid;

112 extern const ff_asf_guid ff_asf_extended_content_header;

113 extern const ff_asf_guid ff_asf_simple_index_header;

114 extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header;

115 extern const ff_asf_guid ff_asf_ext_stream_audio_stream;

116 extern const ff_asf_guid ff_asf_metadata_header;

117 extern const ff_asf_guid ff_asf_metadata_library_header;

118 extern const ff_asf_guid ff_asf_marker_header;

119 extern const ff_asf_guid ff_asf_reserved_4;

120 extern const ff_asf_guid ff_asf_my_guid;

121 extern const ff_asf_guid ff_asf_language_guid;

122 extern const ff_asf_guid ff_asf_content_encryption;

123 extern const ff_asf_guid ff_asf_ext_content_encryption;

124 extern const ff_asf_guid ff_asf_digital_signature;

125

126 extern const AVMetadataConv ff_asf_metadata_conv[];

127

128 #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000

129

130

131 // ASF data packet structure

132 // =========================

133 //

134 //

135 // -----------------------------------

136 // | Error Correction Data | Optional

137 // -----------------------------------

138 // | Payload Parsing Information (PPI) |

139 // -----------------------------------

140 // | Payload Data |

141 // -----------------------------------

142 // | Padding Data |

143 // -----------------------------------

144

145

146 // PPI_FLAG - Payload parsing information flags

147 #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1

148

149 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010

150 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100

151 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110

152 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110

153

154 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000

155 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000

156 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000

157 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000

158

159 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000

160 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000

161 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000

162 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000

163

164 // PL_FLAG - Payload flags

165 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001

166 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010

167 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011

168 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011

169

170 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100

171 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000

172 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100

173 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100

174

175 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000

176 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000

177 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000

178 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000

179

180 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000

181 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000

182

183 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000

184 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000

185 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000

186

187 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000

188

189 extern AVInputFormat ff_asf_demuxer;

190

191 void ff_put_guid(AVIOContext *s, const ff_asf_guid *g);

192

193 #endif /* AVFORMAT_ASF_H */

Generated on Sat Jan 25 2014 19:52:01 for FFmpeg by doxygen 1.8.2