FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2017 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/pixdesc.h"
24			#include "libavutil/opt.h"
25			#include "avfilter.h"
26			#include "filters.h"
27			#include "video.h"
28			#include "framesync.h"
29
30			typedef struct MidEqualizerContext {
31			const AVClass *class;
32			int width[2][4], height[2][4];
33			int nb_planes;
34			int planes;
35			int histogram_size;
36			float *histogram[2];
37			unsigned *cchange;
38			FFFrameSync fs;
39
40			void (*midequalizer)(const uint8_t *in0, const uint8_t *in1,
41			uint8_t *dst,
42			ptrdiff_t linesize1, ptrdiff_t linesize2,
43			ptrdiff_t dlinesize,
44			int w0, int h0,
45			int w1, int h1,
46			float *histogram1, float *histogram2,
47			unsigned *cchange, size_t hsize);
48			} MidEqualizerContext;
49
50			#define OFFSET(x) offsetof(MidEqualizerContext, x)
51			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
52
53			static const AVOption midequalizer_options[] = {
54			{ "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
55			{ NULL }
56			};
57
58			AVFILTER_DEFINE_CLASS(midequalizer);
59
60			static const enum AVPixelFormat pix_fmts[] = {
61			AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
62			AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
63			AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
64			AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
65			AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
66			AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
67			AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
68			AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
69			AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
70			AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12,
71			AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
72			AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
73			AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
74			AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
75			AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
76			AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12,
77			AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
78			AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
79			AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
80			AV_PIX_FMT_GRAY16,
81			AV_PIX_FMT_NONE
82			};
83
84		✗	static int process_frame(FFFrameSync *fs)
85			{
86		✗	AVFilterContext *ctx = fs->parent;
87		✗	MidEqualizerContext *s = fs->opaque;
88		✗	AVFilterLink *outlink = ctx->outputs[0];
89			AVFrame *out, *in0, *in1;
90			int ret;
91
92		✗	if ((ret = ff_framesync_get_frame(&s->fs, 0, &in0, 0)) < 0 ||
93		✗	(ret = ff_framesync_get_frame(&s->fs, 1, &in1, 0)) < 0)
94		✗	return ret;
95
96		✗	if (ctx->is_disabled) {
97		✗	out = av_frame_clone(in0);
98		✗	if (!out)
99		✗	return AVERROR(ENOMEM);
100			} else {
101			int p;
102
103		✗	out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
104		✗	if (!out)
105		✗	return AVERROR(ENOMEM);
106		✗	av_frame_copy_props(out, in0);
107
108		✗	for (p = 0; p < s->nb_planes; p++) {
109		✗	if (!((1 << p) & s->planes)) {
110		✗	av_image_copy_plane(out->data[p], out->linesize[p], in0->data[p], in0->linesize[p],
111		✗	s->width[0][p] * (1 + (s->histogram_size > 256)), s->height[0][p]);
112		✗	continue;
113			}
114
115		✗	s->midequalizer(in0->data[p], in1->data[p],
116			out->data[p],
117		✗	in0->linesize[p], in1->linesize[p],
118		✗	out->linesize[p],
119			s->width[0][p], s->height[0][p],
120			s->width[1][p], s->height[1][p],
121			s->histogram[0], s->histogram[1],
122		✗	s->cchange, s->histogram_size);
123			}
124			}
125		✗	out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
126
127		✗	return ff_filter_frame(outlink, out);
128			}
129
130		✗	static void compute_histogram8(const uint8_t *src, ptrdiff_t linesize,
131			int w, int h, float *histogram, size_t hsize)
132			{
133			int y, x;
134
135		✗	memset(histogram, 0, hsize * sizeof(*histogram));
136
137		✗	for (y = 0; y < h; y++) {
138		✗	for (x = 0; x < w; x++) {
139		✗	histogram[src[x]] += 1;
140			}
141		✗	src += linesize;
142			}
143
144		✗	for (x = 0; x < hsize - 1; x++) {
145		✗	histogram[x + 1] += histogram[x];
146		✗	histogram[x] /= hsize;
147			}
148		✗	histogram[x] /= hsize;
149		✗	}
150
151		✗	static void compute_histogram16(const uint16_t *src, ptrdiff_t linesize,
152			int w, int h, float *histogram, size_t hsize)
153			{
154			int y, x;
155
156		✗	memset(histogram, 0, hsize * sizeof(*histogram));
157
158		✗	for (y = 0; y < h; y++) {
159		✗	for (x = 0; x < w; x++) {
160		✗	histogram[src[x]] += 1;
161			}
162		✗	src += linesize;
163			}
164
165		✗	for (x = 0; x < hsize - 1; x++) {
166		✗	histogram[x + 1] += histogram[x];
167		✗	histogram[x] /= hsize;
168			}
169		✗	histogram[x] /= hsize;
170		✗	}
171
172		✗	static void compute_contrast_change(float *histogram1, float *histogram2,
173			unsigned *cchange, size_t hsize)
174			{
175			int i;
176
177		✗	for (i = 0; i < hsize; i++) {
178			int j;
179
180		✗	for (j = 0; j < hsize && histogram2[j] < histogram1[i]; j++);
181
182		✗	cchange[i] = (i + j) / 2;
183			}
184		✗	}
185
186		✗	static void midequalizer8(const uint8_t *in0, const uint8_t *in1,
187			uint8_t *dst,
188			ptrdiff_t linesize1, ptrdiff_t linesize2,
189			ptrdiff_t dlinesize,
190			int w0, int h0,
191			int w1, int h1,
192			float *histogram1, float *histogram2,
193			unsigned *cchange,
194			size_t hsize)
195			{
196			int x, y;
197
198		✗	compute_histogram8(in0, linesize1, w0, h0, histogram1, hsize);
199		✗	compute_histogram8(in1, linesize2, w1, h1, histogram2, hsize);
200
201		✗	compute_contrast_change(histogram1, histogram2, cchange, hsize);
202
203		✗	for (y = 0; y < h0; y++) {
204		✗	for (x = 0; x < w0; x++) {
205		✗	dst[x] = av_clip_uint8(cchange[in0[x]]);
206			}
207		✗	dst += dlinesize;
208		✗	in0 += linesize1;
209			}
210		✗	}
211
212		✗	static void midequalizer16(const uint8_t *in0, const uint8_t *in1,
213			uint8_t *dst,
214			ptrdiff_t linesize1, ptrdiff_t linesize2,
215			ptrdiff_t dlinesize,
216			int w0, int h0,
217			int w1, int h1,
218			float *histogram1, float *histogram2,
219			unsigned *cchange,
220			size_t hsize)
221			{
222		✗	const uint16_t *i = (const uint16_t *)in0;
223		✗	uint16_t *d = (uint16_t *)dst;
224			int x, y;
225
226		✗	compute_histogram16(i, linesize1 / 2, w0, h0, histogram1, hsize);
227		✗	compute_histogram16((const uint16_t *)in1, linesize2 / 2, w1, h1, histogram2, hsize);
228
229		✗	compute_contrast_change(histogram1, histogram2, cchange, hsize);
230
231		✗	for (y = 0; y < h0; y++) {
232		✗	for (x = 0; x < w0; x++) {
233		✗	d[x] = cchange[i[x]];
234			}
235		✗	d += dlinesize / 2;
236		✗	i += linesize1 / 2;
237			}
238		✗	}
239
240		✗	static int config_input0(AVFilterLink *inlink)
241			{
242		✗	AVFilterContext *ctx = inlink->dst;
243		✗	MidEqualizerContext *s = ctx->priv;
244		✗	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
245			int vsub, hsub;
246
247		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
248
249		✗	hsub = desc->log2_chroma_w;
250		✗	vsub = desc->log2_chroma_h;
251
252		✗	s->height[0][0] = s->height[0][3] = inlink->h;
253		✗	s->width[0][0] = s->width[0][3] = inlink->w;
254		✗	s->height[0][1] = s->height[0][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
255		✗	s->width[0][1] = s->width[0][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
256
257		✗	s->histogram_size = 1 << desc->comp[0].depth;
258
259		✗	s->histogram[0] = av_calloc(s->histogram_size, sizeof(float));
260		✗	s->histogram[1] = av_calloc(s->histogram_size, sizeof(float));
261		✗	s->cchange = av_calloc(s->histogram_size, sizeof(unsigned));
262		✗	if (!s->histogram[0] || !s->histogram[1] || !s->cchange)
263		✗	return AVERROR(ENOMEM);
264
265		✗	if (s->histogram_size == 256) {
266		✗	s->midequalizer = midequalizer8;
267			} else {
268		✗	s->midequalizer = midequalizer16;
269			}
270
271		✗	return 0;
272			}
273
274		✗	static int config_input1(AVFilterLink *inlink)
275			{
276		✗	AVFilterContext *ctx = inlink->dst;
277		✗	MidEqualizerContext *s = ctx->priv;
278		✗	const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
279			int vsub, hsub;
280
281		✗	s->nb_planes = av_pix_fmt_count_planes(inlink->format);
282
283		✗	hsub = desc->log2_chroma_w;
284		✗	vsub = desc->log2_chroma_h;
285
286		✗	s->height[1][0] = s->height[1][3] = inlink->h;
287		✗	s->width[1][0] = s->width[1][3] = inlink->w;
288		✗	s->height[1][1] = s->height[1][2] = AV_CEIL_RSHIFT(inlink->h, vsub);
289		✗	s->width[1][1] = s->width[1][2] = AV_CEIL_RSHIFT(inlink->w, hsub);
290
291		✗	return 0;
292			}
293
294		✗	static int config_output(AVFilterLink *outlink)
295			{
296		✗	AVFilterContext *ctx = outlink->src;
297		✗	MidEqualizerContext *s = ctx->priv;
298		✗	AVFilterLink *in0 = ctx->inputs[0];
299		✗	AVFilterLink *in1 = ctx->inputs[1];
300		✗	FilterLink *il = ff_filter_link(in0);
301		✗	FilterLink *ol = ff_filter_link(outlink);
302			FFFrameSyncIn *in;
303			int ret;
304
305		✗	outlink->w = in0->w;
306		✗	outlink->h = in0->h;
307		✗	outlink->sample_aspect_ratio = in0->sample_aspect_ratio;
308		✗	ol->frame_rate = il->frame_rate;
309
310		✗	if ((ret = ff_framesync_init(&s->fs, ctx, 2)) < 0)
311		✗	return ret;
312
313		✗	in = s->fs.in;
314		✗	in[0].time_base = in0->time_base;
315		✗	in[1].time_base = in1->time_base;
316		✗	in[0].sync = 1;
317		✗	in[0].before = EXT_STOP;
318		✗	in[0].after = EXT_INFINITY;
319		✗	in[1].sync = 1;
320		✗	in[1].before = EXT_STOP;
321		✗	in[1].after = EXT_INFINITY;
322		✗	s->fs.opaque = s;
323		✗	s->fs.on_event = process_frame;
324
325		✗	ret = ff_framesync_configure(&s->fs);
326		✗	outlink->time_base = s->fs.time_base;
327
328		✗	return ret;
329			}
330
331		✗	static int activate(AVFilterContext *ctx)
332			{
333		✗	MidEqualizerContext *s = ctx->priv;
334		✗	return ff_framesync_activate(&s->fs);
335			}
336
337		✗	static av_cold void uninit(AVFilterContext *ctx)
338			{
339		✗	MidEqualizerContext *s = ctx->priv;
340
341		✗	ff_framesync_uninit(&s->fs);
342		✗	av_freep(&s->histogram[0]);
343		✗	av_freep(&s->histogram[1]);
344		✗	av_freep(&s->cchange);
345		✗	}
346
347			static const AVFilterPad midequalizer_inputs[] = {
348			{
349			.name = "in0",
350			.type = AVMEDIA_TYPE_VIDEO,
351			.config_props = config_input0,
352			},
353			{
354			.name = "in1",
355			.type = AVMEDIA_TYPE_VIDEO,
356			.config_props = config_input1,
357			},
358			};
359
360			static const AVFilterPad midequalizer_outputs[] = {
361			{
362			.name = "default",
363			.type = AVMEDIA_TYPE_VIDEO,
364			.config_props = config_output,
365			},
366			};
367
368			const FFFilter ff_vf_midequalizer = {
369			.p.name = "midequalizer",
370			.p.description = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
371			.p.priv_class = &midequalizer_class,
372			.p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
373			.priv_size = sizeof(MidEqualizerContext),
374			.uninit = uninit,
375			.activate = activate,
376			FILTER_INPUTS(midequalizer_inputs),
377			FILTER_OUTPUTS(midequalizer_outputs),
378			FILTER_PIXFMTS_ARRAY(pix_fmts),
379			};
380