FFmpeg: libavfilter/vf_bitplanenoise.c Source File
Go to the documentation of this file. 1 /*
2 * Copyright (c) 2016 Paul B Mahol
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
26
29
32
38
39 #define OFFSET(x) offsetof(BPNContext, x)
40 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
45 };
46
48
65 };
66
68 {
72
73 s->nb_planes =
desc->nb_components;
74
76 s->planeheight[0] =
s->planeheight[3] =
inlink->h;
78 s->planewidth[0] =
s->planewidth[3] =
inlink->w;
79
80 s->depth =
desc->comp[0].depth;
81
82 return 0;
83 }
84
85 #define CHECK_BIT(x, a, b, c) { \
86 bit = (((val[(x)] & mask) == (val[(x) + (a)] & mask)) + \
87 ((val[(x)] & mask) == (val[(x) + (b)] & mask)) + \
88 ((val[(x)] & mask) == (val[(x) + (c)] & mask))) > 1; \
89 if (dst) \
90 dst[(x)] = factor * bit; \
91 stats[plane] += bit; }
92
94 {
98 const int mask = (1 << (
s->bitplane - 1));
99 const int factor = (1 <<
s->depth) - 1;
100 float stats[4] = { 0 };
101 char metabuf[128];
102 int plane, y, x,
bit;
104
110 }
112 }
113
115 for (plane = 0; plane <
s->nb_planes; plane++) {
116 const int linesize =
s->planeheight[plane] > 1 ? in->
linesize[plane] : 0;
117 const int dlinesize =
out->linesize[plane];
118 uint8_t *
val = in->
data[plane];
119 uint8_t *dst =
s->filter ?
out->data[plane]:
NULL;
120
121 for (y = 0; y <
s->planeheight[plane] - 1; y++) {
123
124 for (x = 1; x <
s->planewidth[plane] - 1; x++) {
126 }
127
128 CHECK_BIT(x, -1, -1 + linesize, linesize)
129
131 if (dst)
132 dst += dlinesize;
133 }
134
136
137 for (x = 1; x <
s->planewidth[plane] - 1; x++) {
139 }
140
141 CHECK_BIT(x, -1, -1 - linesize, -linesize)
142 }
143 } else {
144 for (plane = 0; plane <
s->nb_planes; plane++) {
145 const int linesize =
s->planeheight[plane] > 1 ? in->
linesize[plane] / 2 : 0;
146 const int dlinesize =
out->linesize[plane] / 2;
147 uint16_t *
val = (uint16_t *)in->
data[plane];
148 uint16_t *dst =
s->filter ? (uint16_t *)
out->data[plane] :
NULL;
149
150 val = (uint16_t *)in->
data[plane];
151 for (y = 0; y <
s->planeheight[plane] - 1; y++) {
153
154 for (x = 1; x <
s->planewidth[plane] - 1; x++) {
156 }
157
158 CHECK_BIT(x, -1, -1 + linesize, linesize)
159
161 if (dst)
162 dst += dlinesize;
163 }
164
166
167 for (x = 1; x <
s->planewidth[plane] - 1; x++) {
169 }
170
171 CHECK_BIT(x, -1, -1 -linesize, -linesize)
172 }
173 }
174
175 for (plane = 0; plane <
s->nb_planes; plane++) {
177
178 stats[plane] /=
s->planewidth[plane] *
s->planeheight[plane];
179 snprintf(
key,
sizeof(
key),
"lavfi.bitplanenoise.%d.%d", plane,
s->bitplane);
182 }
183
186
188 }
189
191 {
196 },
197 };
198
200 .
name =
"bitplanenoise",
206 .priv_class = &bitplanenoise_class,
208 };
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
AVPixelFormat
Pixel format.
Filter the word "frame" indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
#define FILTER_PIXFMTS_ARRAY(array)
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
const AVFilter ff_vf_bitplanenoise
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
This structure describes decoded (raw) audio or video data.
#define AV_PIX_FMT_YUV420P10
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
const char * name
Filter name.
A link between two filters.
static const AVFilterPad inputs[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define bit(string, value)
#define CHECK_BIT(x, a, b, c)
static enum AVPixelFormat pixfmts[]
#define AV_PIX_FMT_GBRP14
AVFILTER_DEFINE_CLASS(bitplanenoise)
#define AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_YUV422P9
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
static double val(void *priv, double ch)
#define AV_PIX_FMT_GRAY16
static int config_input(AVFilterLink *inlink)
A filter pad used for either input or output.
#define AV_PIX_FMT_YUV444P10
@ AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
#define AV_PIX_FMT_YUV422P16
const AVFilterPad ff_video_default_filterpad[1]
An AVFilterPad array whose only entry has name "default" and is of type AVMEDIA_TYPE_VIDEO.
static const uint16_t mask[17]
@ AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
#define AV_PIX_FMT_YUV444P16
#define AV_CEIL_RSHIFT(a, b)
#define AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_GRAY14
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
#define FILTER_INPUTS(array)
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
#define AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GBRP16
Describe the class of an AVClass context structure.
static __device__ float fabs(float a)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
#define AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV422P10
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
static void stats(AVPacket *const *in, int n_in, unsigned *_max, unsigned *_sum)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
#define AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV444P12
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
int w
agreed upon image width
#define AV_PIX_FMT_GBRP12
@ AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range
const char * name
Pad name.
#define AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV422P14
int h
agreed upon image height
static const AVOption bitplanenoise_options[]
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
static const int factor[16]
@ AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
#define FILTER_OUTPUTS(array)
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
#define AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_YUV420P14
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