nut.c
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1 /*
2  * nut
3  * Copyright (c) 2004-2007 Michael Niedermayer
4  *
5  * This file is part of Libav.
6  *
7  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/mathematics.h"
23 #include "libavutil/tree.h"
24 #include "nut.h"
25 #include "internal.h"
26 
28  { CODEC_ID_TEXT , MKTAG('U', 'T', 'F', '8') },
29  { CODEC_ID_SSA , MKTAG('S', 'S', 'A', 0 ) },
30  { CODEC_ID_DVD_SUBTITLE, MKTAG('D', 'V', 'D', 'S') },
31  { CODEC_ID_DVB_SUBTITLE, MKTAG('D', 'V', 'B', 'S') },
32  { CODEC_ID_NONE , 0 }
33 };
34 
36  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 15 ) },
37  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 15 ) },
38  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 16 ) },
39  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 16 ) },
40  { CODEC_ID_RAWVIDEO, MKTAG(15 , 'B', 'G', 'R') },
41  { CODEC_ID_RAWVIDEO, MKTAG(15 , 'R', 'G', 'B') },
42  { CODEC_ID_RAWVIDEO, MKTAG(16 , 'B', 'G', 'R') },
43  { CODEC_ID_RAWVIDEO, MKTAG(16 , 'R', 'G', 'B') },
44  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 12 ) },
45  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 12 ) },
46  { CODEC_ID_RAWVIDEO, MKTAG(12 , 'B', 'G', 'R') },
47  { CODEC_ID_RAWVIDEO, MKTAG(12 , 'R', 'G', 'B') },
48  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 'A') },
49  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 'A') },
50  { CODEC_ID_RAWVIDEO, MKTAG('A', 'B', 'G', 'R') },
51  { CODEC_ID_RAWVIDEO, MKTAG('A', 'R', 'G', 'B') },
52  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 24 ) },
53  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 24 ) },
54  { CODEC_ID_RAWVIDEO, MKTAG('4', '1', '1', 'P') },
55  { CODEC_ID_RAWVIDEO, MKTAG('4', '2', '2', 'P') },
56  { CODEC_ID_RAWVIDEO, MKTAG('4', '2', '2', 'P') },
57  { CODEC_ID_RAWVIDEO, MKTAG('4', '4', '0', 'P') },
58  { CODEC_ID_RAWVIDEO, MKTAG('4', '4', '0', 'P') },
59  { CODEC_ID_RAWVIDEO, MKTAG('4', '4', '4', 'P') },
60  { CODEC_ID_RAWVIDEO, MKTAG('4', '4', '4', 'P') },
61  { CODEC_ID_RAWVIDEO, MKTAG('B', '1', 'W', '0') },
62  { CODEC_ID_RAWVIDEO, MKTAG('B', '0', 'W', '1') },
63  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 8 ) },
64  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 8 ) },
65  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 4 ) },
66  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 4 ) },
67  { CODEC_ID_RAWVIDEO, MKTAG('B', '4', 'B', 'Y') },
68  { CODEC_ID_RAWVIDEO, MKTAG('R', '4', 'B', 'Y') },
69  { CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 48 ) },
70  { CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 48 ) },
71  { CODEC_ID_RAWVIDEO, MKTAG(48 , 'B', 'G', 'R') },
72  { CODEC_ID_RAWVIDEO, MKTAG(48 , 'R', 'G', 'B') },
73  { CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 10 ) },
74  { CODEC_ID_RAWVIDEO, MKTAG(10 , 11 , '3', 'Y') },
75  { CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 10 ) },
76  { CODEC_ID_RAWVIDEO, MKTAG(10 , 10 , '3', 'Y') },
77  { CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 0 , 10 ) },
78  { CODEC_ID_RAWVIDEO, MKTAG(10 , 0 , '3', 'Y') },
79  { CODEC_ID_RAWVIDEO, MKTAG('Y', '1', 0 , 16 ) },
80  { CODEC_ID_RAWVIDEO, MKTAG(16 , 0 , '1', 'Y') },
81  { CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 16 ) },
82  { CODEC_ID_RAWVIDEO, MKTAG(16 , 11 , '3', 'Y') },
83  { CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 16 ) },
84  { CODEC_ID_RAWVIDEO, MKTAG(16 , 10 , '3', 'Y') },
85  { CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 0 , 16 ) },
86  { CODEC_ID_RAWVIDEO, MKTAG(16 , 0 , '3', 'Y') },
87  { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 8 ) },
88  { CODEC_ID_RAWVIDEO, MKTAG('Y', '2', 0 , 8 ) },
89  { CODEC_ID_NONE , 0 }
90 };
91 
92 void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val){
93  int i;
94  for(i=0; i<nut->avf->nb_streams; i++){
96  val,
97  time_base.num * (int64_t)nut->stream[i].time_base->den,
98  time_base.den * (int64_t)nut->stream[i].time_base->num,
100  }
101 }
102 
103 int64_t ff_lsb2full(StreamContext *stream, int64_t lsb){
104  int64_t mask = (1<<stream->msb_pts_shift)-1;
105  int64_t delta= stream->last_pts - mask/2;
106  return ((lsb - delta)&mask) + delta;
107 }
108 
110  return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32);
111 }
112 
114  return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32);
115 }
116 
117 void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts){
118  Syncpoint *sp= av_mallocz(sizeof(Syncpoint));
119  struct AVTreeNode *node= av_mallocz(av_tree_node_size);
120 
121  sp->pos= pos;
122  sp->back_ptr= back_ptr;
123  sp->ts= ts;
124  av_tree_insert(&nut->syncpoints, sp, (void *) ff_nut_sp_pos_cmp, &node);
125  if(node){
126  av_free(sp);
127  av_free(node);
128  }
129 }
130 
131 static int enu_free(void *opaque, void *elem)
132 {
133  av_free(elem);
134  return 0;
135 }
136 
138 {
141 }
142 
144  {"default" , AV_DISPOSITION_DEFAULT},
145  {"dub" , AV_DISPOSITION_DUB},
146  {"original" , AV_DISPOSITION_ORIGINAL},
147  {"comment" , AV_DISPOSITION_COMMENT},
148  {"lyrics" , AV_DISPOSITION_LYRICS},
149  {"karaoke" , AV_DISPOSITION_KARAOKE},
150  {"" , 0}
151 };
152 
154  { "Author", "artist" },
155  { "X-CreationTime", "date" },
156  { "CreationTime", "date" },
157  { "SourceFilename", "filename" },
158  { "X-Language", "language" },
159  { "X-Disposition", "disposition" },
160  { "X-Replaces", "replaces" },
161  { "X-Depends", "depends" },
162  { "X-Uses", "uses" },
163  { "X-UsesFont", "usesfont" },
164  { 0 },
165 };
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:154
int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
Rescale a 64-bit integer with specified rounding.
Definition: mathematics.c:76
int num
numerator
Definition: rational.h:44
Definition: nut.h:56
#define AV_DISPOSITION_DUB
Definition: avformat.h:597
int64_t ts
Definition: nut.h:60
#define b
Definition: swscale.c:1335
#define AV_DISPOSITION_KARAOKE
Definition: avformat.h:601
float delta
A tree container.
const AVMetadataConv ff_nut_metadata_conv[]
Definition: nut.c:153
#define sp
Definition: regdef.h:63
int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b)
Definition: nut.c:109
void av_tree_destroy(AVTreeNode *t)
Definition: tree.c:134
AVFormatContext * avf
Definition: nut.h:89
int64_t last_pts
Definition: nut.h:76
void * av_tree_insert(AVTreeNode **tp, void *key, int(*cmp)(void *key, const void *b), AVTreeNode **next)
Insert or remove an element.
Definition: tree.c:51
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:137
void ff_nut_free_sp(NUTContext *nut)
Definition: nut.c:137
static const uint16_t mask[17]
Definition: lzw.c:36
uint64_t pos
Definition: nut.h:57
AVRational * time_base
Definition: nut.h:78
int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b)
Definition: nut.c:113
#define AV_DISPOSITION_LYRICS
Definition: avformat.h:600
unsigned int nb_streams
A list of all streams in the file.
Definition: avformat.h:907
void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val)
Definition: nut.c:92
int64_t ff_lsb2full(StreamContext *stream, int64_t lsb)
Definition: nut.c:103
struct AVTreeNode * syncpoints
Definition: nut.h:103
void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)
Definition: nut.c:117
int msb_pts_shift
Definition: nut.h:79
NULL
Definition: eval.c:50
#define AV_DISPOSITION_DEFAULT
Definition: avformat.h:596
const AVCodecTag ff_nut_subtitle_tags[]
Definition: nut.c:27
raw UTF-8 text
Definition: avcodec.h:404
static int enu_free(void *opaque, void *elem)
Definition: nut.c:131
rational number numerator/denominator
Definition: rational.h:43
StreamContext * stream
Definition: nut.h:96
Round toward -infinity.
Definition: mathematics.h:69
const Dispositions ff_nut_dispositions[]
Definition: nut.c:143
const int av_tree_node_size
Definition: tree.c:30
const AVCodecTag ff_nut_video_tags[]
Definition: nut.c:35
int den
denominator
Definition: rational.h:45
#define AV_DISPOSITION_COMMENT
Definition: avformat.h:599
uint64_t back_ptr
Definition: nut.h:58
#define MKTAG(a, b, c, d)
Definition: common.h:231
void av_tree_enumerate(AVTreeNode *t, void *opaque, int(*cmp)(void *opaque, void *elem), int(*enu)(void *opaque, void *elem))
Apply enu(opaque, &elem) to all the elements in the tree in a given range.
Definition: tree.c:143
#define AV_DISPOSITION_ORIGINAL
Definition: avformat.h:598
void * elem
Definition: tree.c:26