/* * Copyright (c) 2000, 2001 Fabrice Bellard * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVFORMAT_ASF_H #define AVFORMAT_ASF_H #include <stdint.h> #include "avformat.h" #include "metadata.h" #include "riff.h" #define PACKET_SIZE 3200 typedef struct ASFStream { int num; unsigned char seq; /* use for reading */ AVPacket pkt; int frag_offset; int timestamp; int64_t duration; int ds_span; /* descrambling */ int ds_packet_size; int ds_chunk_size; int64_t packet_pos; uint16_t stream_language_index; int palette_changed; uint32_t palette[256]; } ASFStream; typedef struct ASFMainHeader { ff_asf_guid guid; ///< generated by client computer uint64_t file_size; /**< in bytes * invalid if broadcasting */ uint64_t create_time; /**< time of creation, in 100-nanosecond units since 1.1.1601 * invalid if broadcasting */ uint64_t play_time; /**< play time, in 100-nanosecond units * invalid if broadcasting */ uint64_t send_time; /**< time to send file, in 100-nanosecond units * invalid if broadcasting (could be ignored) */ uint32_t preroll; /**< timestamp of the first packet, in milliseconds * if nonzero - subtract from time */ uint32_t ignore; ///< preroll is 64bit - but let's just ignore it uint32_t flags; /**< 0x01 - broadcast * 0x02 - seekable * rest is reserved should be 0 */ uint32_t min_pktsize; /**< size of a data packet * invalid if broadcasting */ uint32_t max_pktsize; /**< shall be the same as for min_pktsize * invalid if broadcasting */ uint32_t max_bitrate; /**< bandwidth of stream in bps * should be the sum of bitrates of the * individual media streams */ } ASFMainHeader; typedef struct ASFIndex { uint32_t packet_number; uint16_t packet_count; uint64_t send_time; uint64_t offset; } ASFIndex; extern const ff_asf_guid ff_asf_header; extern const ff_asf_guid ff_asf_file_header; extern const ff_asf_guid ff_asf_stream_header; extern const ff_asf_guid ff_asf_ext_stream_header; extern const ff_asf_guid ff_asf_audio_stream; extern const ff_asf_guid ff_asf_audio_conceal_none; extern const ff_asf_guid ff_asf_audio_conceal_spread; extern const ff_asf_guid ff_asf_video_stream; extern const ff_asf_guid ff_asf_jfif_media; extern const ff_asf_guid ff_asf_video_conceal_none; extern const ff_asf_guid ff_asf_command_stream; extern const ff_asf_guid ff_asf_comment_header; extern const ff_asf_guid ff_asf_codec_comment_header; extern const ff_asf_guid ff_asf_codec_comment1_header; extern const ff_asf_guid ff_asf_data_header; extern const ff_asf_guid ff_asf_head1_guid; extern const ff_asf_guid ff_asf_head2_guid; extern const ff_asf_guid ff_asf_extended_content_header; extern const ff_asf_guid ff_asf_simple_index_header; extern const ff_asf_guid ff_asf_ext_stream_embed_stream_header; extern const ff_asf_guid ff_asf_ext_stream_audio_stream; extern const ff_asf_guid ff_asf_metadata_header; extern const ff_asf_guid ff_asf_metadata_library_header; extern const ff_asf_guid ff_asf_marker_header; extern const ff_asf_guid ff_asf_reserved_4; extern const ff_asf_guid ff_asf_my_guid; extern const ff_asf_guid ff_asf_language_guid; extern const ff_asf_guid ff_asf_content_encryption; extern const ff_asf_guid ff_asf_ext_content_encryption; extern const ff_asf_guid ff_asf_digital_signature; extern const AVMetadataConv ff_asf_metadata_conv[]; #define ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT 0x80 //1000 0000 // ASF data packet structure // ========================= // // // ----------------------------------- // | Error Correction Data | Optional // ----------------------------------- // | Payload Parsing Information (PPI) | // ----------------------------------- // | Payload Data | // ----------------------------------- // | Padding Data | // ----------------------------------- // PPI_FLAG - Payload parsing information flags #define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT 1 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE 0x02 //0000 0010 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD 0x04 //0000 0100 #define ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD 0x06 //0000 0110 #define ASF_PPI_MASK_SEQUENCE_FIELD_SIZE 0x06 //0000 0110 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE 0x08 //0000 1000 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD 0x10 //0001 0000 #define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD 0x18 //0001 1000 #define ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE 0x18 //0001 1000 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE 0x20 //0010 0000 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD 0x40 //0100 0000 #define ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD 0x60 //0110 0000 #define ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE 0x60 //0110 0000 // PL_FLAG - Payload flags #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE 0x01 //0000 0001 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD 0x02 //0000 0010 #define ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD 0x03 //0000 0011 #define ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE 0x03 //0000 0011 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE 0x04 //0000 0100 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD 0x08 //0000 1000 #define ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD 0x0c //0000 1100 #define ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE 0x0c //0000 1100 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE 0x10 //0001 0000 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD 0x20 //0010 0000 #define ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD 0x30 //0011 0000 #define ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE 0x30 //0011 0000 #define ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 #define ASF_PL_MASK_STREAM_NUMBER_LENGTH_FIELD_SIZE 0xc0 //1100 0000 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE 0x40 //0100 0000 #define ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD 0x80 //1000 0000 #define ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE 0xc0 //1100 0000 #define ASF_PL_FLAG_KEY_FRAME 0x80 //1000 0000 extern AVInputFormat ff_asf_demuxer; #endif /* AVFORMAT_ASF_H */