FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dirac_dwt.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2004-2010 Michael Niedermayer <michaelni@gmx.at>
3  * Copyright (C) 2008 David Conrad
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 #include "libavutil/attributes.h"
23 #include "libavutil/avassert.h"
24 #include "libavutil/common.h"
25 #include "dirac_dwt.h"
26 
27 #define TEMPLATE_8bit
28 #include "dirac_dwt_template.c"
29 
30 #define TEMPLATE_10bit
31 #include "dirac_dwt_template.c"
32 
33 #define TEMPLATE_12bit
34 #include "dirac_dwt_template.c"
35 
37  int decomposition_count, int bit_depth)
38 {
39  int ret = 0;
40 
41  d->buffer = p->buf;
42  d->width = p->width;
43  d->height = p->height;
44  d->stride = p->stride;
45  d->temp = p->tmp;
46  d->decomposition_count = decomposition_count;
47 
48  if (bit_depth == 8)
49  ret = ff_spatial_idwt_init_8bit(d, type);
50  else if (bit_depth == 10)
51  ret = ff_spatial_idwt_init_10bit(d, type);
52  else if (bit_depth == 12)
53  ret = ff_spatial_idwt_init_12bit(d, type);
54  else
55  av_log(NULL, AV_LOG_WARNING, "Unsupported bit depth = %i\n", bit_depth);
56 
57  if (ret) {
58  av_log(NULL, AV_LOG_ERROR, "Unknown wavelet type %d\n", type);
59  return AVERROR_INVALIDDATA;
60  }
61 
62  if (ARCH_X86 && bit_depth == 8)
63  ff_spatial_idwt_init_x86(d, type);
64  return 0;
65 }
66 
68 {
69  int level, support = d->support;
70 
71  for (level = d->decomposition_count-1; level >= 0; level--) {
72  int wl = d->width >> level;
73  int hl = d->height >> level;
74  int stride_l = d->stride << level;
75 
76  while (d->cs[level].y <= FFMIN((y>>level)+support, hl))
77  d->spatial_compose(d, level, wl, hl, stride_l);
78  }
79 }
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
uint8_t * buf
Definition: dirac_dwt.h:41
int decomposition_count
Definition: dirac_dwt.h:60
Macro definitions for various function/variable attributes.
uint8_t * tmp
Definition: dirac_dwt.h:43
int support
Definition: dirac_dwt.h:61
void(* spatial_compose)(struct DWTContext *cs, int level, int width, int height, int stride)
Definition: dirac_dwt.h:63
int height
Definition: dirac_dwt.h:39
#define av_log(a,...)
uint8_t * temp
Definition: dirac_dwt.h:56
uint8_t * buffer
Definition: dirac_dwt.h:55
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int width
Definition: dirac_dwt.h:38
simple assert() macros that are a bit more flexible than ISO C assert().
#define FFMIN(a, b)
Definition: common.h:96
void ff_spatial_idwt_slice2(DWTContext *d, int y)
Definition: dirac_dwt.c:67
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
Definition: af_astats.c:150
dwt_type
Definition: dirac_dwt.h:74
void ff_spatial_idwt_init_x86(DWTContext *d, enum dwt_type type)
GLint GLenum type
Definition: opengl_enc.c:105
DWTCompose cs[MAX_DECOMPOSITIONS]
Definition: dirac_dwt.h:71
int stride
Definition: dirac_dwt.h:59
uint8_t level
Definition: svq3.c:206
common internal and external API header
int height
Definition: dirac_dwt.h:58
int stride
Definition: dirac_dwt.h:40
int width
Definition: dirac_dwt.h:57
int ff_spatial_idwt_init(DWTContext *d, DWTPlane *p, enum dwt_type type, int decomposition_count, int bit_depth)
Definition: dirac_dwt.c:36