GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/vf_amplify.c Lines: 0 119 0.0 %
Date: 2020-10-23 17:01:47 Branches: 0 64 0.0 %

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/intreadwrite.h"
23
#include "libavutil/opt.h"
24
#include "libavutil/pixdesc.h"
25
26
#include "avfilter.h"
27
#include "formats.h"
28
#include "internal.h"
29
#include "video.h"
30
31
typedef struct AmplifyContext {
32
    const AVClass *class;
33
    const AVPixFmtDescriptor *desc;
34
    int radius;
35
    float factor;
36
    float threshold;
37
    float tolerance;
38
    int planes;
39
40
    int llimit;
41
    int hlimit;
42
    int nb_inputs;
43
    int nb_frames;
44
45
    int depth;
46
    int nb_planes;
47
    int linesize[4];
48
    int height[4];
49
50
    AVFrame **frames;
51
} AmplifyContext;
52
53
static int query_formats(AVFilterContext *ctx)
54
{
55
    static const enum AVPixelFormat pixel_fmts[] = {
56
        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
57
        AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
58
        AV_PIX_FMT_GRAY16,
59
        AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
60
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
61
        AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
62
        AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
63
        AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
64
        AV_PIX_FMT_YUVJ411P,
65
        AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
66
        AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
67
        AV_PIX_FMT_YUV440P10,
68
        AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
69
        AV_PIX_FMT_YUV440P12,
70
        AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
71
        AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
72
        AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
73
        AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
74
        AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,   AV_PIX_FMT_YUVA444P,
75
        AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
76
        AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
77
        AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
78
        AV_PIX_FMT_GBRAP,     AV_PIX_FMT_GBRAP10,    AV_PIX_FMT_GBRAP12,    AV_PIX_FMT_GBRAP16,
79
        AV_PIX_FMT_NONE
80
    };
81
    AVFilterFormats *formats = ff_make_format_list(pixel_fmts);
82
    if (!formats)
83
        return AVERROR(ENOMEM);
84
    return ff_set_common_formats(ctx, formats);
85
}
86
87
static av_cold int init(AVFilterContext *ctx)
88
{
89
    AmplifyContext *s = ctx->priv;
90
91
    s->nb_inputs = s->radius * 2 + 1;
92
93
    s->frames = av_calloc(s->nb_inputs, sizeof(*s->frames));
94
    if (!s->frames)
95
        return AVERROR(ENOMEM);
96
97
    return 0;
98
}
99
100
typedef struct ThreadData {
101
    AVFrame **in, *out;
102
} ThreadData;
103
104
static int amplify_frame(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
105
{
106
    AmplifyContext *s = ctx->priv;
107
    ThreadData *td = arg;
108
    AVFrame **in = td->in;
109
    AVFrame *out = td->out;
110
    const int radius = s->radius;
111
    const int nb_inputs = s->nb_inputs;
112
    const float threshold = s->threshold;
113
    const float tolerance = s->tolerance;
114
    const float factor = s->factor;
115
    const int llimit = s->llimit;
116
    const int hlimit = s->hlimit;
117
    const int depth = s->depth;
118
    int i, p, x, y;
119
120
    if (s->depth <= 8) {
121
        for (p = 0; p < s->nb_planes; p++) {
122
            const int slice_start = (s->height[p] * jobnr) / nb_jobs;
123
            const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
124
            uint8_t *dst = out->data[p] + slice_start * out->linesize[p];
125
126
            if (!((1 << p) & s->planes)) {
127
                av_image_copy_plane(dst, out->linesize[p],
128
                                    in[radius]->data[p] + slice_start * in[radius]->linesize[p],
129
                                    in[radius]->linesize[p],
130
                                    s->linesize[p], slice_end - slice_start);
131
                continue;
132
            }
133
134
            for (y = slice_start; y < slice_end; y++) {
135
                for (x = 0; x < s->linesize[p]; x++) {
136
                    int src = in[radius]->data[p][y * in[radius]->linesize[p] + x];
137
                    float diff, avg;
138
                    int sum = 0;
139
140
                    for (i = 0; i < nb_inputs; i++) {
141
                        sum += in[i]->data[p][y * in[i]->linesize[p] + x];
142
                    }
143
144
                    avg = sum / (float)nb_inputs;
145
                    diff = src - avg;
146
                    if (fabsf(diff) < threshold && fabsf(diff) > tolerance) {
147
                        int amp;
148
                        if (diff < 0) {
149
                            amp = -FFMIN(FFABS(diff * factor), llimit);
150
                        } else {
151
                            amp = FFMIN(FFABS(diff * factor), hlimit);
152
                        }
153
                        dst[x] = av_clip_uint8(src + amp);
154
                    } else {
155
                        dst[x] = src;
156
                    }
157
                }
158
159
                dst += out->linesize[p];
160
            }
161
        }
162
    } else {
163
        for (p = 0; p < s->nb_planes; p++) {
164
            const int slice_start = (s->height[p] * jobnr) / nb_jobs;
165
            const int slice_end = (s->height[p] * (jobnr+1)) / nb_jobs;
166
            uint16_t *dst = (uint16_t *)(out->data[p] + slice_start * out->linesize[p]);
167
168
            if (!((1 << p) & s->planes)) {
169
                av_image_copy_plane((uint8_t *)dst, out->linesize[p],
170
                                    in[radius]->data[p] + slice_start * in[radius]->linesize[p],
171
                                    in[radius]->linesize[p],
172
                                    s->linesize[p], slice_end - slice_start);
173
                continue;
174
            }
175
176
            for (y = slice_start; y < slice_end; y++) {
177
                for (x = 0; x < s->linesize[p] / 2; x++) {
178
                    int src = AV_RN16(in[radius]->data[p] + y * in[radius]->linesize[p] + x * 2);
179
                    float diff, avg;
180
                    int sum = 0;
181
182
                    for (i = 0; i < nb_inputs; i++) {
183
                        sum += AV_RN16(in[i]->data[p] + y * in[i]->linesize[p] + x * 2);
184
                    }
185
186
                    avg = sum / (float)nb_inputs;
187
                    diff = src - avg;
188
189
                    if (fabsf(diff) < threshold && fabsf(diff) > tolerance) {
190
                        int amp;
191
                        if (diff < 0) {
192
                            amp = -FFMIN(FFABS(diff * factor), llimit);
193
                        } else {
194
                            amp = FFMIN(FFABS(diff * factor), hlimit);
195
                        }
196
                        dst[x] = av_clip_uintp2_c(src + amp, depth);
197
                    } else {
198
                        dst[x] = src;
199
                    }
200
                }
201
202
                dst += out->linesize[p] / 2;
203
            }
204
        }
205
    }
206
207
    return 0;
208
}
209
210
static int config_output(AVFilterLink *outlink)
211
{
212
    AVFilterContext *ctx = outlink->src;
213
    AmplifyContext *s = ctx->priv;
214
    AVFilterLink *inlink = ctx->inputs[0];
215
    int ret;
216
217
    s->desc = av_pix_fmt_desc_get(outlink->format);
218
    if (!s->desc)
219
        return AVERROR_BUG;
220
    s->nb_planes = av_pix_fmt_count_planes(outlink->format);
221
    s->depth = s->desc->comp[0].depth;
222
223
    if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
224
        return ret;
225
226
    s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h);
227
    s->height[0] = s->height[3] = inlink->h;
228
229
    return 0;
230
}
231
232
static av_cold void uninit(AVFilterContext *ctx)
233
{
234
    AmplifyContext *s = ctx->priv;
235
    int i;
236
237
    if (s->frames) {
238
        for (i = 0; i < s->nb_frames; i++)
239
            av_frame_free(&s->frames[i]);
240
    }
241
    av_freep(&s->frames);
242
}
243
244
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
245
{
246
    AVFilterContext *ctx = inlink->dst;
247
    AVFilterLink *outlink = ctx->outputs[0];
248
    AmplifyContext *s = ctx->priv;
249
    ThreadData td;
250
    AVFrame *out;
251
252
    if (s->nb_frames < s->nb_inputs) {
253
        s->frames[s->nb_frames] = in;
254
        s->nb_frames++;
255
        return 0;
256
    } else {
257
        av_frame_free(&s->frames[0]);
258
        memmove(&s->frames[0], &s->frames[1], sizeof(*s->frames) * (s->nb_inputs - 1));
259
        s->frames[s->nb_inputs - 1] = in;
260
    }
261
262
    if (!ctx->is_disabled) {
263
        out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
264
        if (!out)
265
            return AVERROR(ENOMEM);
266
        av_frame_copy_props(out, s->frames[0]);
267
268
        td.out = out;
269
        td.in = s->frames;
270
        ctx->internal->execute(ctx, amplify_frame, &td, NULL, FFMIN(s->height[1], ff_filter_get_nb_threads(ctx)));
271
    } else {
272
        out = av_frame_clone(s->frames[s->radius]);
273
        if (!out)
274
            return AVERROR(ENOMEM);
275
        out->pts = s->frames[0]->pts;
276
    }
277
278
    return ff_filter_frame(outlink, out);
279
}
280
281
#define OFFSET(x) offsetof(AmplifyContext, x)
282
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
283
#define VFT AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
284
285
static const AVOption amplify_options[] = {
286
    { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
287
    { "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = VFT },
288
    { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = VFT },
289
    { "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = VFT },
290
    { "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
291
    { "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = VFT },
292
    { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7},    0, 15,  VFT },
293
    { NULL },
294
};
295
296
static const AVFilterPad inputs[] = {
297
    {
298
        .name          = "default",
299
        .type          = AVMEDIA_TYPE_VIDEO,
300
        .filter_frame  = filter_frame,
301
    },
302
    { NULL }
303
};
304
305
static const AVFilterPad outputs[] = {
306
    {
307
        .name          = "default",
308
        .type          = AVMEDIA_TYPE_VIDEO,
309
        .config_props  = config_output,
310
    },
311
    { NULL }
312
};
313
314
AVFILTER_DEFINE_CLASS(amplify);
315
316
AVFilter ff_vf_amplify = {
317
    .name          = "amplify",
318
    .description   = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
319
    .priv_size     = sizeof(AmplifyContext),
320
    .priv_class    = &amplify_class,
321
    .query_formats = query_formats,
322
    .outputs       = outputs,
323
    .inputs        = inputs,
324
    .init          = init,
325
    .uninit        = uninit,
326
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
327
    .process_command = ff_filter_process_command,
328
};