yading@11: /*
yading@11:  * "NUT" Container Format (de)muxer
yading@11:  * Copyright (c) 2006 Michael Niedermayer
yading@11:  *
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: #ifndef AVFORMAT_NUT_H
yading@11: #define AVFORMAT_NUT_H
yading@11: 
yading@11: //#include <limits.h>
yading@11: //#include "libavutil/adler32.h"
yading@11: //#include "libavcodec/mpegaudio.h"
yading@11: #include "avformat.h"
yading@11: #include "internal.h"
yading@11: #include "metadata.h"
yading@11: 
yading@11: #define      MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48))
yading@11: #define    STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48))
yading@11: #define SYNCPOINT_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48))
yading@11: #define     INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48))
yading@11: #define      INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48))
yading@11: 
yading@11: #define ID_STRING "nut/multimedia container\0"
yading@11: 
yading@11: #define MAX_DISTANCE (1024*32-1)
yading@11: 
yading@11: typedef enum{
yading@11:     FLAG_KEY        =   1, ///<if set, frame is keyframe
yading@11:     FLAG_EOR        =   2, ///<if set, stream has no relevance on presentation. (EOR)
yading@11:     FLAG_CODED_PTS  =   8, ///<if set, coded_pts is in the frame header
yading@11:     FLAG_STREAM_ID  =  16, ///<if set, stream_id is coded in the frame header
yading@11:     FLAG_SIZE_MSB   =  32, ///<if set, data_size_msb is at frame header, otherwise data_size_msb is 0
yading@11:     FLAG_CHECKSUM   =  64, ///<if set, the frame header contains a checksum
yading@11:     FLAG_RESERVED   = 128, ///<if set, reserved_count is coded in the frame header
yading@11:     FLAG_HEADER_IDX =1024, ///<If set, header_idx is coded in the frame header.
yading@11:     FLAG_MATCH_TIME =2048, ///<If set, match_time_delta is coded in the frame header
yading@11:     FLAG_CODED      =4096, ///<if set, coded_flags are stored in the frame header
yading@11:     FLAG_INVALID    =8192, ///<if set, frame_code is invalid
yading@11: } Flag;
yading@11: 
yading@11: typedef struct Syncpoint {
yading@11:     uint64_t pos;
yading@11:     uint64_t back_ptr;
yading@11: //    uint64_t global_key_pts;
yading@11:     int64_t ts;
yading@11: } Syncpoint;
yading@11: 
yading@11: typedef struct FrameCode {
yading@11:     uint16_t flags;
yading@11:     uint8_t  stream_id;
yading@11:     uint16_t size_mul;
yading@11:     uint16_t size_lsb;
yading@11:     int16_t  pts_delta;
yading@11:     uint8_t  reserved_count;
yading@11:     uint8_t  header_idx;
yading@11: } FrameCode;
yading@11: 
yading@11: typedef struct StreamContext {
yading@11:     int last_flags;
yading@11:     int skip_until_key_frame;
yading@11:     int64_t last_pts;
yading@11:     int time_base_id;
yading@11:     AVRational *time_base;
yading@11:     int msb_pts_shift;
yading@11:     int max_pts_distance;
yading@11:     int decode_delay; //FIXME duplicate of has_b_frames
yading@11:     int64_t *keyframe_pts;
yading@11: } StreamContext;
yading@11: 
yading@11: typedef struct ChapterContext {
yading@11:     AVRational *time_base;
yading@11: } ChapterContext;
yading@11: 
yading@11: typedef struct NUTContext {
yading@11:     AVFormatContext *avf;
yading@11: //    int written_packet_size;
yading@11: //    int64_t packet_start;
yading@11:     FrameCode frame_code[256];
yading@11:     uint8_t header_len[128];
yading@11:     const uint8_t *header[128];
yading@11:     uint64_t next_startcode;     ///< stores the next startcode if it has already been parsed but the stream is not seekable
yading@11:     StreamContext *stream;
yading@11:     ChapterContext *chapter;
yading@11:     unsigned int max_distance;
yading@11:     unsigned int time_base_count;
yading@11:     int64_t last_syncpoint_pos;
yading@11:     int header_count;
yading@11:     AVRational *time_base;
yading@11:     struct AVTreeNode *syncpoints;
yading@11:     int sp_count;
yading@11:     int64_t max_pts;
yading@11:     AVRational *max_pts_tb;
yading@11: } NUTContext;
yading@11: 
yading@11: extern const AVCodecTag ff_nut_subtitle_tags[];
yading@11: extern const AVCodecTag ff_nut_video_tags[];
yading@11: extern const AVCodecTag ff_nut_audio_tags[];
yading@11: extern const AVCodecTag ff_nut_data_tags[];
yading@11: 
yading@11: extern const AVCodecTag * const ff_nut_codec_tags[];
yading@11: 
yading@11: typedef struct Dispositions {
yading@11:     char str[9];
yading@11:     int flag;
yading@11: } Dispositions;
yading@11: 
yading@11: void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val);
yading@11: int64_t ff_lsb2full(StreamContext *stream, int64_t lsb);
yading@11: int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b);
yading@11: int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b);
yading@11: void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts);
yading@11: void ff_nut_free_sp(NUTContext *nut);
yading@11: 
yading@11: extern const Dispositions ff_nut_dispositions[];
yading@11: 
yading@11: extern const AVMetadataConv ff_nut_metadata_conv[];
yading@11: 
yading@11: #endif /* AVFORMAT_NUT_H */