aboutsummaryrefslogtreecommitdiffstats
path: root/libavfilter/vf_negate.c
blob: 40c0c2608b7636aaff480d2b584c16cfa2a5bc95 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
/*
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "drawutils.h"
#include "internal.h"
#include "video.h"

#define COMP_R 0x01
#define COMP_G 0x02
#define COMP_B 0x04
#define COMP_A 0x08
#define COMP_Y 0x10
#define COMP_U 0x20
#define COMP_V 0x40

typedef struct ThreadData {
    AVFrame *in;
    AVFrame *out;
} ThreadData;

typedef struct NegateContext {
    const AVClass *class;
    int negate_alpha;
    int max;
    int requested_components;
    int components;
    int planes;
    int step;
    int nb_planes;
    int linesize[4];
    int width[4];
    int height[4];
    uint8_t rgba_map[4];

    void (*negate)(const uint8_t *src, uint8_t *dst,
                   ptrdiff_t slinesize, ptrdiff_t dlinesize,
                   int w, int h, int max, int step,
                   int components);
} NegateContext;

#define OFFSET(x) offsetof(NegateContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

static const AVOption negate_options[] = {
    { "components", "set components to negate",  OFFSET(requested_components), AV_OPT_TYPE_FLAGS, {.i64=0x77}, 1, 0xff, FLAGS, .unit = "flags"},
    {      "y", "set luma component",  0, AV_OPT_TYPE_CONST, {.i64=COMP_Y}, 0, 0, FLAGS, .unit = "flags"},
    {      "u", "set u component",     0, AV_OPT_TYPE_CONST, {.i64=COMP_U}, 0, 0, FLAGS, .unit = "flags"},
    {      "v", "set v component",     0, AV_OPT_TYPE_CONST, {.i64=COMP_V}, 0, 0, FLAGS, .unit = "flags"},
    {      "r", "set red component",   0, AV_OPT_TYPE_CONST, {.i64=COMP_R}, 0, 0, FLAGS, .unit = "flags"},
    {      "g", "set green component", 0, AV_OPT_TYPE_CONST, {.i64=COMP_G}, 0, 0, FLAGS, .unit = "flags"},
    {      "b", "set blue component",  0, AV_OPT_TYPE_CONST, {.i64=COMP_B}, 0, 0, FLAGS, .unit = "flags"},
    {      "a", "set alpha component", 0, AV_OPT_TYPE_CONST, {.i64=COMP_A}, 0, 0, FLAGS, .unit = "flags"},
    { "negate_alpha",  NULL,    OFFSET(negate_alpha), AV_OPT_TYPE_BOOL, {.i64=0},    0,    1, FLAGS },
    { NULL }
};

AVFILTER_DEFINE_CLASS(negate);

static const enum AVPixelFormat pix_fmts[] = {
    AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P,  AV_PIX_FMT_YUV440P,
    AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
    AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
    AV_PIX_FMT_YUVJ440P,
    AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
    AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV440P10,
    AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV440P12,
    AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
    AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16,
    AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA420P10,
    AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA422P12,
    AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA420P16,
    AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
    AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
    AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
    AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64,
    AV_PIX_FMT_BGR48, AV_PIX_FMT_BGRA64,
    AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
    AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
    AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP14,
    AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14,
    AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP12,
    AV_PIX_FMT_GBRAP16,
    AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10,
    AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
    AV_PIX_FMT_NONE
};

static void negate8(const uint8_t *src, uint8_t *dst,
                     ptrdiff_t slinesize, ptrdiff_t dlinesize,
                     int w, int h, int max, int step,
                     int components)
{
    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++)
            dst[x] = 255 - src[x];

        dst += dlinesize;
        src += slinesize;
    }
}

static void negate_packed8(const uint8_t *ssrc, uint8_t *ddst,
                           ptrdiff_t slinesize, ptrdiff_t dlinesize,
                           int w, int h, int max, int step,
                           int components)
{
    for (int y = 0; y < h; y++) {
        const uint8_t *src = ssrc + y * slinesize;
        uint8_t *dst = ddst + y * dlinesize;

        for (int x = 0; x < w; x++) {
            switch (step) {
            case 4:  dst[3] = components & 8 ? 255 - src[3] : src[3];
            case 3:  dst[2] = components & 4 ? 255 - src[2] : src[2];
            case 2:  dst[1] = components & 2 ? 255 - src[1] : src[1];
            default: dst[0] = components & 1 ? 255 - src[0] : src[0];
            }

            src += step;
            dst += step;
        }
    }
}

static void negate16(const uint8_t *ssrc, uint8_t *ddst,
                     ptrdiff_t slinesize, ptrdiff_t dlinesize,
                     int w, int h, int max, int step,
                     int components)
{
    const uint16_t *src = (const uint16_t *)ssrc;
    uint16_t *dst = (uint16_t *)ddst;

    dlinesize /= 2;
    slinesize /= 2;

    for (int y = 0; y < h; y++) {
        for (int x = 0; x < w; x++)
            dst[x] = max - src[x];

        dst += dlinesize;
        src += slinesize;
    }
}

static void negate_packed16(const uint8_t *ssrc, uint8_t *ddst,
                            ptrdiff_t slinesize, ptrdiff_t dlinesize,
                            int w, int h, int max, int step,
                            int components)
{
    for (int y = 0; y < h; y++) {
        const uint16_t *src = (const uint16_t *)(ssrc + y * slinesize);
        uint16_t *dst = (uint16_t *)(ddst + y * dlinesize);

        for (int x = 0; x < w; x++) {
            switch (step) {
            case 4:  dst[3] = components & 8 ? max - src[3] : src[3];
            case 3:  dst[2] = components & 4 ? max - src[2] : src[2];
            case 2:  dst[1] = components & 2 ? max - src[1] : src[1];
            default: dst[0] = components & 1 ? max - src[0] : src[0];
            }

            src += step;
            dst += step;
        }
    }
}

static int config_input(AVFilterLink *inlink)
{
    AVFilterContext *ctx = inlink->dst;
    NegateContext *s = ctx->priv;
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
    int depth, vsub, hsub, ret, is_packed;
    int comp_avail;

    s->planes = s->negate_alpha ? 0xF : 0x7;
    is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR) &&
                 (desc->nb_components > 1);
    if (s->requested_components != 0x77) {
        comp_avail = ((desc->flags & AV_PIX_FMT_FLAG_RGB) ? COMP_R|COMP_G|COMP_B :
                                                     COMP_Y |
                                    ((desc->nb_components > 2) ? COMP_U|COMP_V : 0)) |
                      ((desc->flags & AV_PIX_FMT_FLAG_ALPHA) ? COMP_A : 0);
        if (s->requested_components & ~comp_avail) {
            av_log(ctx, AV_LOG_ERROR, "Requested components not available.\n");
            return AVERROR(EINVAL);
        }

        s->planes = 0;
        if (!(desc->flags & AV_PIX_FMT_FLAG_RGB)) {
            if (s->requested_components & COMP_Y)
                s->planes |= 1;
            if (s->requested_components & COMP_U)
                s->planes |= 2;
            if (s->requested_components & COMP_V)
                s->planes |= 4;
            if (s->requested_components & COMP_A)
                s->planes |= 8;
        } else {
            if (s->requested_components & COMP_R)
                s->planes |= 4;
            if (s->requested_components & COMP_G)
                s->planes |= 1;
            if (s->requested_components & COMP_B)
                s->planes |= 2;
            if (s->requested_components & COMP_A)
                s->planes |= 8;
        }
    }
    s->nb_planes = av_pix_fmt_count_planes(inlink->format);

    s->components = 0;
    if (desc->flags & AV_PIX_FMT_FLAG_RGB) {
        ff_fill_rgba_map(s->rgba_map, inlink->format);

        if (s->requested_components & COMP_R)
            s->components |= 1 << s->rgba_map[0];
        if (s->requested_components & COMP_G)
            s->components |= 1 << s->rgba_map[1];
        if (s->requested_components & COMP_B)
            s->components |= 1 << s->rgba_map[2];
        if (s->requested_components & COMP_A)
            s->components |= 1 << s->rgba_map[3];
    }

    if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0)
        return ret;

    depth = desc->comp[0].depth;
    hsub = desc->log2_chroma_w;
    vsub = desc->log2_chroma_h;
    s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub);
    s->height[0] = s->height[3] = inlink->h;
    s->width[1]  = s->width[2]  = AV_CEIL_RSHIFT(inlink->w, hsub);
    s->width[0]  = s->width[3]  = inlink->w;

    s->negate = depth <= 8 ? negate8 : negate16;
    if (is_packed) {
        s->negate = depth <= 8 ? negate_packed8 : negate_packed16;
        s->planes = 1;
    }
    s->max = (1 << depth) - 1;
    s->step = av_get_bits_per_pixel(desc) >> 3;
    if (depth > 8)
        s->step = s->step >> 1;

    return 0;
}

static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
{
    NegateContext *s = ctx->priv;
    ThreadData *td = arg;
    AVFrame *in = td->in;
    AVFrame *out = td->out;

    for (int p = 0; p < s->nb_planes; p++) {
        const int h = s->height[p];
        const int slice_start = (h * jobnr) / nb_jobs;
        const int slice_end = (h * (jobnr+1)) / nb_jobs;

        if (!((1 << p) & s->planes)) {
            if (out != in)
                av_image_copy_plane(out->data[p] + slice_start * out->linesize[p],
                                    out->linesize[p],
                                    in->data[p] + slice_start * in->linesize[p],
                                    in->linesize[p],
                                    s->linesize[p], slice_end - slice_start);
            continue;
        }

        s->negate(in->data[p] + slice_start * in->linesize[p],
                  out->data[p] + slice_start * out->linesize[p],
                  in->linesize[p], out->linesize[p],
                  s->width[p], slice_end - slice_start,
                  s->max, s->step, s->components);
    }

    return 0;
}

static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
    AVFilterContext *ctx = inlink->dst;
    NegateContext *s = ctx->priv;
    AVFilterLink *outlink = ctx->outputs[0];
    ThreadData td;
    AVFrame *out;

    if (av_frame_is_writable(in)) {
        out = in;
    } else {
        out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
        if (!out) {
            av_frame_free(&in);
            return AVERROR(ENOMEM);
        }
        av_frame_copy_props(out, in);
    }

    td.out = out;
    td.in = in;
    ff_filter_execute(ctx, filter_slice, &td, NULL,
                      FFMIN(s->height[2], ff_filter_get_nb_threads(ctx)));
    if (out != in)
        av_frame_free(&in);

    return ff_filter_frame(outlink, out);
}

static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
                           char *res, int res_len, int flags)
{
    NegateContext *s = ctx->priv;
    int old_planes = s->planes;
    int ret;

    ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
    if (ret < 0)
        return ret;

    ret = config_input(ctx->inputs[0]);
    if (ret < 0)
        s->planes = old_planes;
    return ret;
}

static const AVFilterPad inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_input,
    },
};

const AVFilter ff_vf_negate = {
    .name          = "negate",
    .description   = NULL_IF_CONFIG_SMALL("Negate input video."),
    .priv_size     = sizeof(NegateContext),
    .priv_class    = &negate_class,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(ff_video_default_filterpad),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
    .process_command = process_command,
};