雌性激素是什么

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2018 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
21			#include "libavutil/imgutils.h"
22			#include "libavutil/mem.h"
23			#include "libavutil/opt.h"
24			#include "libavutil/pixdesc.h"
25
26			#include "avfilter.h"
27			#include "filters.h"
28			#include "video.h"
29
30			typedef struct AmplifyContext {
31			const AVClass *class;
32			const AVPixFmtDescriptor *desc;
33			int radius;
34			float factor;
35			float threshold;
36			float tolerance;
37			int planes;
38
39			float llimit;
40			float hlimit;
41			int nb_inputs;
42			int nb_frames;
43
44			int depth;
45			int nb_planes;
46			int linesize[4];
47			int height[4];
48
49			AVFrame **frames;
50			} AmplifyContext;
51
52			static const enum AVPixelFormat pixel_fmts[] = {
53			AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
54			AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
55			AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAYF32,
56			AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
57			AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
58			AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
59			AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
60			AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
61			AV_PIX_FMT_YUVJ411P,
62			AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
63			AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
64			AV_PIX_FMT_YUV440P10,
65			AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
66			AV_PIX_FMT_YUV440P12,
67			AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
68			AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
69			AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
70			AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
71			AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
72			AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
73			AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
74			AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
75			AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
76			AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
77			AV_PIX_FMT_NONE
78			};
79
80		✗	static av_cold int init(AVFilterContext *ctx)
81			{
82		✗	AmplifyContext *s = ctx->priv;
83
84		✗	s->nb_inputs = s->radius * 2 + 1;
85
86		✗	s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
87		✗	if (!s->frames)
88		✗	return AVERROR(ENOMEM);
89
90		✗	return 0;
91			}
92
93			typedef struct ThreadData {
94			AVFrame **in, *out;
95			} ThreadData;
96
97			#define AMPLIFY_SLICE(type, stype, clip) \
98			const stype limit[2] = { s->llimit, s->hlimit }; \
99			\
100			for (int p = 0; p < s->nb_planes; p++) { \
101			const int slice_start = (s->height[p] * jobnr) / nb_jobs; \
102			const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs; \
103			type *dst = (type *)(out->data[p] + slice_start * out->linesize[p]); \
104			ptrdiff_t dst_linesize = out->linesize[p] / sizeof(type); \
105			\
106			if (!((1 << p) & s->planes)) { \
107			av_image_copy_plane((uint8_t *)dst, out->linesize[p], \
108			in[radius]->data[p] + slice_start * in[radius]->linesize[p], \
109			in[radius]->linesize[p], \
110			s->linesize[p], slice_end - slice_start); \
111			continue; \
112			} \
113			\
114			for (int y = slice_start; y < slice_end; y++) { \
115			for (int x = 0; x < s->linesize[p] / sizeof(type); x++) { \
116			stype src = *(type *)(in[radius]->data[p] + y * in[radius]->linesize[p] + x * sizeof(type));\
117			float diff, abs_diff, avg; \
118			stype sum = 0; \
119			\
120			for (int i = 0; i < nb_inputs; i++) { \
121			sum += *(type *)(in[i]->data[p] + y * in[i]->linesize[p] + x * sizeof(type));\
122			} \
123			\
124			avg = sum * scale; \
125			diff = src - avg; \
126			abs_diff = fabsf(diff); \
127			\
128			if (abs_diff < threshold && abs_diff > tolerance) { \
129			float amp = copysignf(fminf(abs_diff * factor, limit[diff >= 0]), diff); \
130			dst[x] = clip(src + amp, depth); \
131			} else { \
132			dst[x] = src; \
133			} \
134			} \
135			\
136			dst += dst_linesize; \
137			} \
138			}
139
140			#define CLIP8(x, depth) av_clip_uint8(lrintf(x))
141			#define CLIP16(x, depth) av_clip_uintp2_c(lrintf(x), depth)
142			#define NOP(x, depth) (x)
143
144		✗	static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
145			{
146		✗	AmplifyContext *s = ctx->priv;
147		✗	ThreadData *td = arg;
148		✗	AVFrame **in = td->in;
149		✗	AVFrame *out = td->out;
150		✗	const int radius = s->radius;
151		✗	const int nb_inputs = s->nb_inputs;
152		✗	const float threshold = s->threshold;
153		✗	const float tolerance = s->tolerance;
154		✗	const float scale = 1.f / nb_inputs;
155		✗	const float factor = s->factor;
156		✗	const int depth = s->depth;
157
158		✗	if (s->depth <= 8) {
159		✗	AMPLIFY_SLICE(uint8_t, int, CLIP8)
160		✗	} else if (s->depth <= 16) {
161		✗	AMPLIFY_SLICE(uint16_t, int, CLIP16)
162			} else {
163		✗	AMPLIFY_SLICE(float, float, NOP)
164			}
165
166		✗	return 0;
167			}
168
169		✗	static int config_output(AVFilterLink *outlink)
170			{
171		✗	AVFilterContext *ctx = outlink->src;
172		✗	AmplifyContext *s = ctx->priv;
173		✗	AVFilterLink *inlink = ctx->inputs[0];
174			int ret;
175
176		✗	s->desc = av_pix_fmt_desc_get(outlink->format);
177		✗	if (!s->desc)
178		✗	return AVERROR_BUG;
179		✗	s->nb_planes = av_pix_fmt_count_planes(outlink->format);
180		✗	s->depth = s->desc->comp[0].depth;
181
182		✗	if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
183		✗	return ret;
184
185		✗	s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
186		✗	s->height[0] = s->height[3] = inlink->h;
187
188		✗	return 0;
189			}
190
191		✗	static av_cold void uninit(AVFilterContext *ctx)
192			{
193		✗	AmplifyContext *s = ctx->priv;
194			int i;
195
196		✗	if (s->frames) {
197		✗	for (i = 0; i < s->nb_frames; i++)
198		✗	av_frame_free(&s->frames[i]);
199			}
200		✗	av_freep(&s->frames);
201		✗	}
202
203		✗	static int filter_frame(AVFilterLink *inlink, AVFrame *in)
204			{
205		✗	AVFilterContext *ctx = inlink->dst;
206		✗	AVFilterLink *outlink = ctx->outputs[0];
207		✗	AmplifyContext *s = ctx->priv;
208			ThreadData td;
209			AVFrame *out;
210
211		✗	if (s->nb_frames < s->nb_inputs) {
212		✗	s->frames[s->nb_frames] = in;
213		✗	s->nb_frames++;
214		✗	return 0;
215			} else {
216		✗	av_frame_free(&s->frames[0]);
217		✗	memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
218		✗	s->frames[s->nb_inputs - 1] = in;
219			}
220
221		✗	if (!ctx->is_disabled) {
222		✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
223		✗	if (!out)
224		✗	return AVERROR(ENOMEM);
225		✗	av_frame_copy_props(out, s->frames[0]);
226
227		✗	td.out = out;
228		✗	td.in = s->frames;
229		✗	ff_filter_execute(ctx, amplify_frame, &td, NULL,
230		✗	FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
231			} else {
232		✗	out = av_frame_clone(s->frames[s->radius]);
233		✗	if (!out)
234		✗	return AVERROR(ENOMEM);
235		✗	out->pts = s->frames[0]->pts;
236			}
237
238		✗	return ff_filter_frame(outlink, out);
239			}
240
241			#define OFFSET(x) offsetof(AmplifyContext, x)
242			#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
243			#define VFT AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
244
245			static const AVOption amplify_options[] = {
246			{ "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
247			{ "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = VFT },
248			{ "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = VFT },
249			{ "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = VFT },
250			{ "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
251			{ "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_FLOAT, {.dbl=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
252			{ "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7}, 0, 15, VFT },
253			{ NULL },
254			};
255
256			static const AVFilterPad inputs[] = {
257			{
258			.name = "default",
259			.type = AVMEDIA_TYPE_VIDEO,
260			.filter_frame = filter_frame,
261			},
262			};
263
264			static const AVFilterPad outputs[] = {
265			{
266			.name = "default",
267			.type = AVMEDIA_TYPE_VIDEO,
268			.config_props = config_output,
269			},
270			};
271
272			AVFILTER_DEFINE_CLASS(amplify);
273
274			const FFFilter ff_vf_amplify = {
275			.p.name = "amplify",
276			.p.description = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
277			.p.priv_class = &amplify_class,
278			.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
279			.priv_size = sizeof(AmplifyContext),
280			FILTER_OUTPUTS(outputs),
281			FILTER_INPUTS(inputs),
282			FILTER_PIXFMTS_ARRAY(pixel_fmts),
283			.init = init,
284			.uninit = uninit,
285			.process_command = ff_filter_process_command,
286			};
287