GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/vf_dblur.c Lines: 0 122 0.0 %
Date: 2020-09-25 14:59:26 Branches: 0 52 0.0 %

Line Branch Exec Source
1
/*
2
 * Copyright (c) 2020 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/opt.h"
23
#include "libavutil/pixdesc.h"
24
#include "avfilter.h"
25
#include "formats.h"
26
#include "internal.h"
27
#include "video.h"
28
29
typedef struct DBlurContext {
30
    const AVClass *class;
31
32
    float angle;
33
    float radius;
34
    int planes;
35
36
    float b0, b1, q, c, R3;
37
38
    int depth;
39
    int planewidth[4];
40
    int planeheight[4];
41
    float *buffer;
42
    int nb_planes;
43
    void (*horiz_slice)(float *buffer, int width, int height, int steps, float nu, float bscale);
44
} DBlurContext;
45
46
#define OFFSET(x) offsetof(DBlurContext, x)
47
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
48
49
static const AVOption dblur_options[] = {
50
    { "angle",  "set angle",            OFFSET(angle),  AV_OPT_TYPE_FLOAT, {.dbl=45},  0.0,  360, FLAGS },
51
    { "radius", "set radius",           OFFSET(radius), AV_OPT_TYPE_FLOAT, {.dbl=5},     1, 8192, FLAGS },
52
    { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT,   {.i64=0xF},   0,  0xF, FLAGS },
53
    { NULL }
54
};
55
56
AVFILTER_DEFINE_CLASS(dblur);
57
58
#define f(n, m) (dst[(n) * width + (m)])
59
60
static int filter_horizontally(AVFilterContext *ctx, int width, int height)
61
{
62
    DBlurContext *s = ctx->priv;
63
    const float b0 = s->b0;
64
    const float b1 = s->b1;
65
    const float q = s->q;
66
    const float c = s->c;
67
    float *dst = s->buffer;
68
    float g;
69
70
    if (s->R3 > 0) {
71
        for (int y = 1; y < height - 1; y++) {
72
            g = q * f(0, 0) + c * f(0, 0);
73
            for (int x = 0; x < width; x++) {
74
                f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
75
                g = q * f(y, x) + c * f(y - 1, x);
76
            }
77
        }
78
79
        for (int y = height - 2; y >= 0; y--) {
80
            g = q * f(y, width - 1) + c * f(y, width - 1);
81
            for (int x = width - 1; x >= 0; x--) {
82
                f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
83
                g = q * f(y, x) + c * f(y + 1, x);
84
            }
85
        }
86
    } else {
87
        for (int y = 1; y < height - 1; y++) {
88
            g = q * f(0, width - 1) + c * f(0, width - 1);
89
            for (int x = width - 1; x >= 0; x--) {
90
                f(y, x) = b0 * f(y, x) + b1 * f(y - 1, x) + g;
91
                g = q * f(y, x) + c * f(y - 1, x);
92
            }
93
        }
94
95
        for (int y = height - 2; y >= 0; y--) {
96
            g = q * f(y, 0) + c * f(y, 0);
97
            for (int x = 0; x < width; x++) {
98
                f(y, x) = b0 * f(y, x) + b1 * f(y + 1, x) + g;
99
                g = q * f(y, x) + c * f(y + 1, x);
100
            }
101
        }
102
    }
103
104
    return 0;
105
}
106
107
static void diriir2d(AVFilterContext *ctx, int plane)
108
{
109
    DBlurContext *s = ctx->priv;
110
    const int width = s->planewidth[plane];
111
    const int height = s->planeheight[plane];
112
113
    filter_horizontally(ctx, width, height);
114
}
115
116
static int query_formats(AVFilterContext *ctx)
117
{
118
    static const enum AVPixelFormat pix_fmts[] = {
119
        AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
120
        AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P,
121
        AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P,
122
        AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
123
        AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
124
        AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
125
        AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
126
        AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
127
        AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
128
        AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
129
        AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
130
        AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
131
        AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
132
        AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
133
        AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
134
        AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
135
        AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
136
        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
137
        AV_PIX_FMT_NONE
138
    };
139
140
    return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
141
}
142
143
static int config_input(AVFilterLink *inlink)
144
{
145
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
146
    DBlurContext *s = inlink->dst->priv;
147
148
    s->depth = desc->comp[0].depth;
149
    s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
150
    s->planewidth[0] = s->planewidth[3] = inlink->w;
151
    s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
152
    s->planeheight[0] = s->planeheight[3] = inlink->h;
153
154
    s->nb_planes = av_pix_fmt_count_planes(inlink->format);
155
156
    s->buffer = av_malloc_array(FFALIGN(inlink->w, 16), FFALIGN(inlink->h, 16) * sizeof(*s->buffer));
157
    if (!s->buffer)
158
        return AVERROR(ENOMEM);
159
160
    return 0;
161
}
162
163
static void set_params(DBlurContext *s, float angle, float r)
164
{
165
    float mu, nu, R1, R2, w1, w2;
166
    float a0, a1, a2, a3;
167
168
    angle = angle * M_PI / 180.f;
169
170
    mu = cosf(angle);
171
    nu = sinf(angle);
172
    R1 = (mu * r) * (mu * r);
173
    R2 = (nu * r) * (nu * r);
174
    s->R3 = mu * nu * r * r;
175
    w1 = sqrtf(0.25f + R1);
176
    w2 = sqrtf(0.25f + R2);
177
    a0 = (w1 + 0.5f) * (w2 + 0.5f) - fabsf(s->R3);
178
    a1 = 0.5f + w2 - a0;
179
    a2 = 0.5f + w1 - a0;
180
    a3 = a0 - w1 - w2;
181
    s->b0 = 1.f / a0;
182
    s->b1 = -a2 / a0;
183
    s->q = -a1 / a0;
184
    s->c = -a3 / a0;
185
}
186
187
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
188
{
189
    AVFilterContext *ctx = inlink->dst;
190
    DBlurContext *s = ctx->priv;
191
    AVFilterLink *outlink = ctx->outputs[0];
192
    AVFrame *out;
193
    int plane;
194
195
    set_params(s, s->angle, s->radius);
196
197
    if (av_frame_is_writable(in)) {
198
        out = in;
199
    } else {
200
        out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
201
        if (!out) {
202
            av_frame_free(&in);
203
            return AVERROR(ENOMEM);
204
        }
205
        av_frame_copy_props(out, in);
206
    }
207
208
    for (plane = 0; plane < s->nb_planes; plane++) {
209
        const int height = s->planeheight[plane];
210
        const int width = s->planewidth[plane];
211
        float *bptr = s->buffer;
212
        const uint8_t *src = in->data[plane];
213
        const uint16_t *src16 = (const uint16_t *)in->data[plane];
214
        uint8_t *dst = out->data[plane];
215
        uint16_t *dst16 = (uint16_t *)out->data[plane];
216
        int y, x;
217
218
        if (!(s->planes & (1 << plane))) {
219
            if (out != in)
220
                av_image_copy_plane(out->data[plane], out->linesize[plane],
221
                                    in->data[plane], in->linesize[plane],
222
                                    width * ((s->depth + 7) / 8), height);
223
            continue;
224
        }
225
226
        if (s->depth == 8) {
227
            for (y = 0; y < height; y++) {
228
                for (x = 0; x < width; x++) {
229
                    bptr[x] = src[x];
230
                }
231
                bptr += width;
232
                src += in->linesize[plane];
233
            }
234
        } else {
235
            for (y = 0; y < height; y++) {
236
                for (x = 0; x < width; x++) {
237
                    bptr[x] = src16[x];
238
                }
239
                bptr += width;
240
                src16 += in->linesize[plane] / 2;
241
            }
242
        }
243
244
        diriir2d(ctx, plane);
245
246
        bptr = s->buffer;
247
        if (s->depth == 8) {
248
            for (y = 0; y < height; y++) {
249
                for (x = 0; x < width; x++) {
250
                    dst[x] = bptr[x];
251
                }
252
                bptr += width;
253
                dst += out->linesize[plane];
254
            }
255
        } else {
256
            for (y = 0; y < height; y++) {
257
                for (x = 0; x < width; x++) {
258
                    dst16[x] = bptr[x];
259
                }
260
                bptr += width;
261
                dst16 += out->linesize[plane] / 2;
262
            }
263
        }
264
    }
265
266
    if (out != in)
267
        av_frame_free(&in);
268
    return ff_filter_frame(outlink, out);
269
}
270
271
static av_cold void uninit(AVFilterContext *ctx)
272
{
273
    DBlurContext *s = ctx->priv;
274
275
    av_freep(&s->buffer);
276
}
277
278
static const AVFilterPad dblur_inputs[] = {
279
    {
280
        .name         = "default",
281
        .type         = AVMEDIA_TYPE_VIDEO,
282
        .config_props = config_input,
283
        .filter_frame = filter_frame,
284
    },
285
    { NULL }
286
};
287
288
static const AVFilterPad dblur_outputs[] = {
289
    {
290
        .name = "default",
291
        .type = AVMEDIA_TYPE_VIDEO,
292
    },
293
    { NULL }
294
};
295
296
AVFilter ff_vf_dblur = {
297
    .name          = "dblur",
298
    .description   = NULL_IF_CONFIG_SMALL("Apply Directional Blur filter."),
299
    .priv_size     = sizeof(DBlurContext),
300
    .priv_class    = &dblur_class,
301
    .uninit        = uninit,
302
    .query_formats = query_formats,
303
    .inputs        = dblur_inputs,
304
    .outputs       = dblur_outputs,
305
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
306
    .process_command = ff_filter_process_command,
307
};