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Diffstat (limited to 'ffmpeg/libavformat/nut.h')
| -rw-r--r-- | ffmpeg/libavformat/nut.h | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/ffmpeg/libavformat/nut.h b/ffmpeg/libavformat/nut.h new file mode 100644 index 0000000..ab31c27 --- /dev/null +++ b/ffmpeg/libavformat/nut.h @@ -0,0 +1,133 @@ +/* + * "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 + */ + +#ifndef AVFORMAT_NUT_H +#define AVFORMAT_NUT_H + +//#include <limits.h> +//#include "libavutil/adler32.h" +//#include "libavcodec/mpegaudio.h" +#include "avformat.h" +#include "internal.h" +#include "metadata.h" + +#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)) + +#define ID_STRING "nut/multimedia container\0" + +#define MAX_DISTANCE (1024*32-1) + +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; + +typedef struct Syncpoint { + uint64_t pos; + uint64_t back_ptr; +// uint64_t global_key_pts; + int64_t ts; +} Syncpoint; + +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; + +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; + +typedef struct ChapterContext { + AVRational *time_base; +} ChapterContext; + +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; + +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[]; + +extern const AVCodecTag * const ff_nut_codec_tags[]; + +typedef struct Dispositions { + char str[9]; + int flag; +} Dispositions; + +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); +void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts); +void ff_nut_free_sp(NUTContext *nut); + +extern const Dispositions ff_nut_dispositions[]; + +extern const AVMetadataConv ff_nut_metadata_conv[]; + +#endif /* AVFORMAT_NUT_H */ |