/* * Copyright (c) 2000, 2001 Fabrice Bellard. * * This file is part of FFmpeg. * * FFmpeg 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. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */#ifndef FFMPEG_ASF_H#define FFMPEG_ASF_H#include <stdint.h>#include "avformat.h"#define PACKET_SIZE 3200typedef struct {    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;} ASFStream;typedef uint8_t GUID[16];typedef struct {    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;       /**< bandwith of stream in bps                                 *   should be the sum of bitrates of the                                 *   individual media streams */} ASFMainHeader;typedef struct {    uint32_t packet_number;    uint16_t packet_count;} ASFIndex;typedef struct {    uint32_t seqno;    unsigned int packet_size;    int is_streamed;    int asfid2avid[128];                 ///< conversion table from asf ID 2 AVStream ID    ASFStream streams[128];              ///< it's max number and it's not that big    uint32_t stream_bitrates[128];       ///< max number of streams, bitrate for each (for streaming)    /* non streamed additonnal info */    uint64_t nb_packets;                 ///< how many packets are there in the file, invalid if broadcasting    int64_t duration;                    ///< in 100ns units    /* packet filling */    unsigned char multi_payloads_present;    int packet_size_left;    int packet_timestamp_start;    int packet_timestamp_end;    unsigned int packet_nb_payloads;    int packet_nb_frames;    uint8_t packet_buf[PACKET_SIZE];    ByteIOContext pb;    /* only for reading */    uint64_t data_offset;                ///< beginning of the first data packet    uint64_t data_object_offset;         ///< data object offset (excl. GUID & size)    uint64_t data_object_size;           ///< size of the data object    int index_read;    ASFMainHeader hdr;    int packet_flags;    int packet_property;    int packet_timestamp;    int packet_segsizetype;    int packet_segments;    int packet_seq;    int packet_replic_size;    int packet_key_frame;    int packet_padsize;    unsigned int packet_frag_offset;    unsigned int packet_frag_size;    int64_t packet_frag_timestamp;    int packet_multi_size;    int packet_obj_size;    int packet_time_delta;    int packet_time_start;    int64_t packet_pos;    int stream_index;    int64_t last_indexed_pts;    ASFIndex* index_ptr;    uint32_t nb_index_count;    uint32_t nb_index_memory_alloc;    uint16_t maximum_packet;    ASFStream* asf_st;                   ///< currently decoded stream} ASFContext;static const GUID asf_header = {    0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C};static const GUID file_header = {    0xA1, 0xDC, 0xAB, 0x8C, 0x47, 0xA9, 0xCF, 0x11, 0x8E, 0xE4, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65};static const GUID stream_header = {    0x91, 0x07, 0xDC, 0xB7, 0xB7, 0xA9, 0xCF, 0x11, 0x8E, 0xE6, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65};static const GUID ext_stream_header = {    0xCB, 0xA5, 0xE6, 0x14, 0x72, 0xC6, 0x32, 0x43, 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A};static const GUID audio_stream = {    0x40, 0x9E, 0x69, 0xF8, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B};static const GUID audio_conceal_none = {    // 0x40, 0xa4, 0xf1, 0x49, 0x4ece, 0x11d0, 0xa3, 0xac, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6    // New value lifted from avifile    0x00, 0x57, 0xfb, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b};static const GUID audio_conceal_spread = {     0x50, 0xCD, 0xC3, 0xBF, 0x8F, 0x61, 0xCF, 0x11, 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20};static const GUID video_stream = {    0xC0, 0xEF, 0x19, 0xBC, 0x4D, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B};static const GUID video_conceal_none = {    0x00, 0x57, 0xFB, 0x20, 0x55, 0x5B, 0xCF, 0x11, 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B};static const GUID command_stream = {    0xC0, 0xCF, 0xDA, 0x59, 0xE6, 0x59, 0xD0, 0x11, 0xA3, 0xAC, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6};static const GUID comment_header = {    0x33, 0x26, 0xb2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c};static const GUID codec_comment_header = {    0x40, 0x52, 0xD1, 0x86, 0x1D, 0x31, 0xD0, 0x11, 0xA3, 0xA4, 0x00, 0xA0, 0xC9, 0x03, 0x48, 0xF6};static const GUID codec_comment1_header = {    0x41, 0x52, 0xd1, 0x86, 0x1D, 0x31, 0xD0, 0x11, 0xa3, 0xa4, 0x00, 0xa0, 0xc9, 0x03, 0x48, 0xf6};static const GUID data_header = {    0x36, 0x26, 0xb2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xa6, 0xd9, 0x00, 0xaa, 0x00, 0x62, 0xce, 0x6c};static const GUID head1_guid = {    0xb5, 0x03, 0xbf, 0x5f, 0x2E, 0xA9, 0xCF, 0x11, 0x8e, 0xe3, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65};static const GUID head2_guid = {    0x11, 0xd2, 0xd3, 0xab, 0xBA, 0xA9, 0xCF, 0x11, 0x8e, 0xe6, 0x00, 0xc0, 0x0c, 0x20, 0x53, 0x65};static const GUID extended_content_header = {        0x40, 0xA4, 0xD0, 0xD2, 0x07, 0xE3, 0xD2, 0x11, 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50};static const GUID simple_index_header = {        0x90, 0x08, 0x00, 0x33, 0xB1, 0xE5, 0xCF, 0x11, 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB};static const GUID ext_stream_embed_stream_header = {        0xe2, 0x65, 0xfb, 0x3a, 0xEF, 0x47, 0xF2, 0x40, 0xac, 0x2c, 0x70, 0xa9, 0x0d, 0x71, 0xd3, 0x43};static const GUID ext_stream_audio_stream = {        0x9d, 0x8c, 0x17, 0x31, 0xE1, 0x03, 0x28, 0x45, 0xb5, 0x82, 0x3d, 0xf9, 0xdb, 0x22, 0xf5, 0x03};static const GUID metadata_header = {        0xea, 0xcb, 0xf8, 0xc5, 0xaf, 0x5b, 0x77, 0x48, 0x84, 0x67, 0xaa, 0x8c, 0x44, 0xfa, 0x4c, 0xca};/* I am not a number !!! This GUID is the one found on the PC used to   generate the stream */static const GUID my_guid = {    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};#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#endif /* FFMPEG_ASF_H */