0,0 → 1,132 |
/* |
* "NUT" Container Format (de)muxer |
* Copyright (c) 2006 Michael Niedermayer |
* |
* 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 |
*/ |
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#ifndef AVFORMAT_NUT_H |
#define AVFORMAT_NUT_H |
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#include "avformat.h" |
#include "internal.h" |
#include "metadata.h" |
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#define MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48)) |
#define STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48)) |
#define SYNCPOINT_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48)) |
#define INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48)) |
#define INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48)) |
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#define ID_STRING "nut/multimedia container\0" |
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#define MAX_DISTANCE (1024*32-1) |
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#define NUT_VERSION 3 |
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typedef enum{ |
FLAG_KEY = 1, ///<if set, frame is keyframe |
FLAG_EOR = 2, ///<if set, stream has no relevance on presentation. (EOR) |
FLAG_CODED_PTS = 8, ///<if set, coded_pts is in the frame header |
FLAG_STREAM_ID = 16, ///<if set, stream_id is coded in the frame header |
FLAG_SIZE_MSB = 32, ///<if set, data_size_msb is at frame header, otherwise data_size_msb is 0 |
FLAG_CHECKSUM = 64, ///<if set, the frame header contains a checksum |
FLAG_RESERVED = 128, ///<if set, reserved_count is coded in the frame header |
FLAG_HEADER_IDX =1024, ///<If set, header_idx is coded in the frame header. |
FLAG_MATCH_TIME =2048, ///<If set, match_time_delta is coded in the frame header |
FLAG_CODED =4096, ///<if set, coded_flags are stored in the frame header |
FLAG_INVALID =8192, ///<if set, frame_code is invalid |
} Flag; |
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typedef struct Syncpoint { |
uint64_t pos; |
uint64_t back_ptr; |
// uint64_t global_key_pts; |
int64_t ts; |
} Syncpoint; |
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typedef struct FrameCode { |
uint16_t flags; |
uint8_t stream_id; |
uint16_t size_mul; |
uint16_t size_lsb; |
int16_t pts_delta; |
uint8_t reserved_count; |
uint8_t header_idx; |
} FrameCode; |
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typedef struct StreamContext { |
int last_flags; |
int skip_until_key_frame; |
int64_t last_pts; |
int time_base_id; |
AVRational *time_base; |
int msb_pts_shift; |
int max_pts_distance; |
int decode_delay; //FIXME duplicate of has_b_frames |
int64_t *keyframe_pts; |
} StreamContext; |
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typedef struct ChapterContext { |
AVRational *time_base; |
} ChapterContext; |
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typedef struct NUTContext { |
AVFormatContext *avf; |
// int written_packet_size; |
// int64_t packet_start; |
FrameCode frame_code[256]; |
uint8_t header_len[128]; |
const uint8_t *header[128]; |
uint64_t next_startcode; ///< stores the next startcode if it has already been parsed but the stream is not seekable |
StreamContext *stream; |
ChapterContext *chapter; |
unsigned int max_distance; |
unsigned int time_base_count; |
int64_t last_syncpoint_pos; |
int header_count; |
AVRational *time_base; |
struct AVTreeNode *syncpoints; |
int sp_count; |
int64_t max_pts; |
AVRational *max_pts_tb; |
} NUTContext; |
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extern const AVCodecTag ff_nut_subtitle_tags[]; |
extern const AVCodecTag ff_nut_video_tags[]; |
extern const AVCodecTag ff_nut_audio_tags[]; |
extern const AVCodecTag ff_nut_data_tags[]; |
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extern const AVCodecTag * const ff_nut_codec_tags[]; |
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typedef struct Dispositions { |
char str[9]; |
int flag; |
} Dispositions; |
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void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val); |
int64_t ff_lsb2full(StreamContext *stream, int64_t lsb); |
int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b); |
int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b); |
int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts); |
void ff_nut_free_sp(NUTContext *nut); |
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extern const Dispositions ff_nut_dispositions[]; |
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extern const AVMetadataConv ff_nut_metadata_conv[]; |
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#endif /* AVFORMAT_NUT_H */ |