mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-22 15:23:11 +00:00
186 lines
7.3 KiB
C
186 lines
7.3 KiB
C
/*
|
|
* 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"
|
|
|
|
#define PACKET_SIZE 3200
|
|
|
|
typedef 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;
|
|
|
|
uint16_t stream_language_index;
|
|
|
|
int palette_changed;
|
|
uint32_t palette[256];
|
|
} ASFStream;
|
|
|
|
typedef uint8_t ff_asf_guid[16];
|
|
|
|
typedef struct {
|
|
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 {
|
|
uint32_t packet_number;
|
|
uint16_t packet_count;
|
|
} 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_marker_header;
|
|
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;
|
|
|
|
static av_always_inline int ff_guidcmp(const void *g1, const void *g2)
|
|
{
|
|
return memcmp(g1, g2, sizeof(ff_asf_guid));
|
|
}
|
|
|
|
void ff_get_guid(AVIOContext *s, ff_asf_guid *g);
|
|
|
|
#endif /* AVFORMAT_ASF_H */
|