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/*

 * 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 AVFORMAT_ASF_H

#define AVFORMAT_ASF_H

#include 

#include "avformat.h"

#include "metadata.h"

#include "riff.h"

#define PACKET_SIZE 3200

typedef struct ASFPayload {

    uint8_t type;

    uint16_t size;

} ASFPayload;

typedef struct ASFStream {

    int num;

    unsigned char seq;

    /* use for reading */

    AVPacket pkt;

    int frag_offset;

    int packet_obj_size;

    int timestamp;

    int64_t duration;

    int skip_to_key;

    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];

    int payload_ext_ct;

    ASFPayload payload[8];

} 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;

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

#endif /* AVFORMAT_ASF_H */