Go to most recent revision | Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
4349 | Serge | 1 | /* |
2 | * "NUT" Container Format (de)muxer |
||
3 | * Copyright (c) 2006 Michael Niedermayer |
||
4 | * |
||
5 | * This file is part of FFmpeg. |
||
6 | * |
||
7 | * FFmpeg is free software; you can redistribute it and/or |
||
8 | * modify it under the terms of the GNU Lesser General Public |
||
9 | * License as published by the Free Software Foundation; either |
||
10 | * version 2.1 of the License, or (at your option) any later version. |
||
11 | * |
||
12 | * FFmpeg is distributed in the hope that it will be useful, |
||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||
15 | * Lesser General Public License for more details. |
||
16 | * |
||
17 | * You should have received a copy of the GNU Lesser General Public |
||
18 | * License along with FFmpeg; if not, write to the Free Software |
||
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||
20 | */ |
||
21 | |||
22 | #ifndef AVFORMAT_NUT_H |
||
23 | #define AVFORMAT_NUT_H |
||
24 | |||
25 | #include "avformat.h" |
||
26 | #include "internal.h" |
||
27 | #include "metadata.h" |
||
28 | |||
29 | #define MAIN_STARTCODE (0x7A561F5F04ADULL + (((uint64_t)('N'<<8) + 'M')<<48)) |
||
30 | #define STREAM_STARTCODE (0x11405BF2F9DBULL + (((uint64_t)('N'<<8) + 'S')<<48)) |
||
31 | #define SYNCPOINT_STARTCODE (0xE4ADEECA4569ULL + (((uint64_t)('N'<<8) + 'K')<<48)) |
||
32 | #define INDEX_STARTCODE (0xDD672F23E64EULL + (((uint64_t)('N'<<8) + 'X')<<48)) |
||
33 | #define INFO_STARTCODE (0xAB68B596BA78ULL + (((uint64_t)('N'<<8) + 'I')<<48)) |
||
34 | |||
35 | #define ID_STRING "nut/multimedia container\0" |
||
36 | |||
37 | #define MAX_DISTANCE (1024*32-1) |
||
38 | |||
39 | #define NUT_VERSION 3 |
||
40 | |||
41 | typedef enum{ |
||
42 | FLAG_KEY = 1, /// |
||
43 | FLAG_EOR = 2, /// |
||
44 | FLAG_CODED_PTS = 8, /// |
||
45 | FLAG_STREAM_ID = 16, /// |
||
46 | FLAG_SIZE_MSB = 32, /// |
||
47 | FLAG_CHECKSUM = 64, /// |
||
48 | FLAG_RESERVED = 128, /// |
||
49 | FLAG_HEADER_IDX =1024, /// |
||
50 | FLAG_MATCH_TIME =2048, /// |
||
51 | FLAG_CODED =4096, /// |
||
52 | FLAG_INVALID =8192, /// |
||
53 | } Flag; |
||
54 | |||
55 | typedef struct Syncpoint { |
||
56 | uint64_t pos; |
||
57 | uint64_t back_ptr; |
||
58 | // uint64_t global_key_pts; |
||
59 | int64_t ts; |
||
60 | } Syncpoint; |
||
61 | |||
62 | typedef struct FrameCode { |
||
63 | uint16_t flags; |
||
64 | uint8_t stream_id; |
||
65 | uint16_t size_mul; |
||
66 | uint16_t size_lsb; |
||
67 | int16_t pts_delta; |
||
68 | uint8_t reserved_count; |
||
69 | uint8_t header_idx; |
||
70 | } FrameCode; |
||
71 | |||
72 | typedef struct StreamContext { |
||
73 | int last_flags; |
||
74 | int skip_until_key_frame; |
||
75 | int64_t last_pts; |
||
76 | int time_base_id; |
||
77 | AVRational *time_base; |
||
78 | int msb_pts_shift; |
||
79 | int max_pts_distance; |
||
80 | int decode_delay; //FIXME duplicate of has_b_frames |
||
81 | int64_t *keyframe_pts; |
||
82 | } StreamContext; |
||
83 | |||
84 | typedef struct ChapterContext { |
||
85 | AVRational *time_base; |
||
86 | } ChapterContext; |
||
87 | |||
88 | typedef struct NUTContext { |
||
89 | AVFormatContext *avf; |
||
90 | // int written_packet_size; |
||
91 | // int64_t packet_start; |
||
92 | FrameCode frame_code[256]; |
||
93 | uint8_t header_len[128]; |
||
94 | const uint8_t *header[128]; |
||
95 | uint64_t next_startcode; ///< stores the next startcode if it has already been parsed but the stream is not seekable |
||
96 | StreamContext *stream; |
||
97 | ChapterContext *chapter; |
||
98 | unsigned int max_distance; |
||
99 | unsigned int time_base_count; |
||
100 | int64_t last_syncpoint_pos; |
||
101 | int header_count; |
||
102 | AVRational *time_base; |
||
103 | struct AVTreeNode *syncpoints; |
||
104 | int sp_count; |
||
105 | int64_t max_pts; |
||
106 | AVRational *max_pts_tb; |
||
107 | } NUTContext; |
||
108 | |||
109 | extern const AVCodecTag ff_nut_subtitle_tags[]; |
||
110 | extern const AVCodecTag ff_nut_video_tags[]; |
||
111 | extern const AVCodecTag ff_nut_audio_tags[]; |
||
112 | extern const AVCodecTag ff_nut_data_tags[]; |
||
113 | |||
114 | extern const AVCodecTag * const ff_nut_codec_tags[]; |
||
115 | |||
116 | typedef struct Dispositions { |
||
117 | char str[9]; |
||
118 | int flag; |
||
119 | } Dispositions; |
||
120 | |||
121 | void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val); |
||
122 | int64_t ff_lsb2full(StreamContext *stream, int64_t lsb); |
||
123 | int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b); |
||
124 | int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b); |
||
125 | int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts); |
||
126 | void ff_nut_free_sp(NUTContext *nut); |
||
127 | |||
128 | extern const Dispositions ff_nut_dispositions[]; |
||
129 | |||
130 | extern const AVMetadataConv ff_nut_metadata_conv[]; |
||
131 | |||
132 | #endif /* AVFORMAT_NUT_H */>48)) |