aboutsummaryrefslogtreecommitdiffstats
path: root/libavfilter/vf_avgblur_opencl.c
blob: 241c31257630b2c89c3a198c7a02c3c8c6626302 (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
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
/*
 * Copyright (c) 2018 Dylan Fernando
 * Copyright (c) 2018 Danil Iashchenko
 *
 * 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 "avfilter.h"
#include "internal.h"
#include "opencl.h"
#include "opencl_source.h"
#include "video.h"
#include "boxblur.h"

typedef struct AverageBlurOpenCLContext {
    OpenCLFilterContext ocf;

    int              initialised;
    cl_kernel        kernel_horiz;
    cl_kernel        kernel_vert;
    cl_command_queue command_queue;

    int radiusH;
    int radiusV;
    int planes;

    FilterParam luma_param;
    FilterParam chroma_param;
    FilterParam alpha_param;
    int radius[4];
    int power[4];

} AverageBlurOpenCLContext;


static int avgblur_opencl_init(AVFilterContext *avctx)
{
    AverageBlurOpenCLContext *ctx = avctx->priv;
    cl_int cle;
    int err;

    err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_avgblur, 1);
    if (err < 0)
        goto fail;

    ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
                                              ctx->ocf.hwctx->device_id,
                                              0, &cle);
    CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
                     "command queue %d.\n", cle);

    ctx->kernel_horiz = clCreateKernel(ctx->ocf.program,"avgblur_horiz", &cle);
    CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create horizontal "
                     "kernel %d.\n", cle);

    ctx->kernel_vert = clCreateKernel(ctx->ocf.program,"avgblur_vert", &cle);
    CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create vertical "
                     "kernel %d.\n", cle);

    ctx->initialised = 1;
    return 0;

fail:
    if (ctx->command_queue)
        clReleaseCommandQueue(ctx->command_queue);
    if (ctx->kernel_horiz)
        clReleaseKernel(ctx->kernel_horiz);
    if (ctx->kernel_vert)
        clReleaseKernel(ctx->kernel_vert);
    return err;
}


static int avgblur_opencl_make_filter_params(AVFilterLink *inlink)
{
    AVFilterContext    *ctx = inlink->dst;
    AverageBlurOpenCLContext *s = ctx->priv;
    int i;

    if (s->radiusV <= 0) {
        s->radiusV = s->radiusH;
    }

    for (i = 0; i < 4; i++) {
        s->power[i] = 1;
    }
    return 0;
}


static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)
{
    AVFilterContext    *ctx = inlink->dst;
    AverageBlurOpenCLContext *s = ctx->priv;
    int err, i;

    err = ff_boxblur_eval_filter_params(inlink,
                                        &s->luma_param,
                                        &s->chroma_param,
                                        &s->alpha_param);

    if (err != 0) {
        av_log(ctx, AV_LOG_ERROR, "Failed to evaluate "
               "filter params: %d.\n", err);
        return err;
    }

    s->radius[Y] = s->luma_param.radius;
    s->radius[U] = s->radius[V] = s->chroma_param.radius;
    s->radius[A] = s->alpha_param.radius;

    s->power[Y] = s->luma_param.power;
    s->power[U] = s->power[V] = s->chroma_param.power;
    s->power[A] = s->alpha_param.power;

    for (i = 0; i < 4; i++) {
        if (s->power[i] == 0) {
            s->power[i] = 1;
            s->radius[i] = 0;
        }
    }

    return 0;
}


static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
{
    AVFilterContext    *avctx = inlink->dst;
    AVFilterLink     *outlink = avctx->outputs[0];
    AverageBlurOpenCLContext *ctx = avctx->priv;
    AVFrame *output = NULL;
    AVFrame *intermediate = NULL;
    cl_int cle;
    size_t global_work[2];
    cl_mem src, dst, inter;
    int err, p, radius_x, radius_y, i;

    av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
           av_get_pix_fmt_name(input->format),
           input->width, input->height, input->pts);

    if (!input->hw_frames_ctx)
        return AVERROR(EINVAL);

    if (!ctx->initialised) {
        err = avgblur_opencl_init(avctx);
        if (err < 0)
            goto fail;

        if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
            err = avgblur_opencl_make_filter_params(inlink);
            if (err < 0)
                goto fail;
        } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
            err = boxblur_opencl_make_filter_params(inlink);
            if (err < 0)
                goto fail;
        }

    }

    output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
    if (!output) {
        err = AVERROR(ENOMEM);
        goto fail;
    }
    intermediate = ff_get_video_buffer(outlink, outlink->w, outlink->h);
    if (!intermediate) {
        err = AVERROR(ENOMEM);
        goto fail;
    }

    for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
        src = (cl_mem) input->data[p];
        dst = (cl_mem) output->data[p];
        inter = (cl_mem)intermediate->data[p];

        if (!dst)
            break;

        radius_x = ctx->radiusH;
        radius_y = ctx->radiusV;

        if (!(ctx->planes & (1 << p))) {
            radius_x = 0;
            radius_y = 0;
        }

        for (i = 0; i < ctx->power[p]; i++) {
            CL_SET_KERNEL_ARG(ctx->kernel_horiz, 0, cl_mem, &inter);
            CL_SET_KERNEL_ARG(ctx->kernel_horiz, 1, cl_mem, i == 0 ? &src : &dst);
            if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
                CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &radius_x);
            } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
                CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &ctx->radius[p]);
            }

            err = ff_opencl_filter_work_size_from_image(avctx, global_work,
                                                        i == 0 ? intermediate : output, p, 0);
            if (err < 0)
                goto fail;

            av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
                   "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
                   p, global_work[0], global_work[1]);

            cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_horiz, 2, NULL,
                                         global_work, NULL,
                                         0, NULL, NULL);
            CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue horizontal "
                             "kernel: %d.\n", cle);

            err = ff_opencl_filter_work_size_from_image(avctx, global_work,
                                                        i == 0 ? output : intermediate, p, 0);

            CL_SET_KERNEL_ARG(ctx->kernel_vert, 0, cl_mem, &dst);
            CL_SET_KERNEL_ARG(ctx->kernel_vert, 1, cl_mem, &inter);

            if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
                CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &radius_y);
            } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
                CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &ctx->radius[p]);
            }

            cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_vert, 2, NULL,
                                         global_work, NULL,
                                         0, NULL, NULL);
            CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue vertical "
                             "kernel: %d.\n", cle);
        }
    }

    cle = clFinish(ctx->command_queue);
    CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);

    err = av_frame_copy_props(output, input);
    if (err < 0)
        goto fail;

    av_frame_free(&input);
    av_frame_free(&intermediate);

    av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
           av_get_pix_fmt_name(output->format),
           output->width, output->height, output->pts);

    return ff_filter_frame(outlink, output);

fail:
    clFinish(ctx->command_queue);
    av_frame_free(&input);
    av_frame_free(&output);
    av_frame_free(&intermediate);
    return err;
}


static av_cold void avgblur_opencl_uninit(AVFilterContext *avctx)
{
    AverageBlurOpenCLContext *ctx = avctx->priv;
    cl_int cle;

    if (ctx->kernel_horiz) {
        cle = clReleaseKernel(ctx->kernel_horiz);
        if (cle != CL_SUCCESS)
            av_log(avctx, AV_LOG_ERROR, "Failed to release "
                   "kernel: %d.\n", cle);
    }

    if (ctx->kernel_vert) {
        cle = clReleaseKernel(ctx->kernel_vert);
        if (cle != CL_SUCCESS)
            av_log(avctx, AV_LOG_ERROR, "Failed to release "
                   "kernel: %d.\n", cle);
    }

    if (ctx->command_queue) {
        cle = clReleaseCommandQueue(ctx->command_queue);
        if (cle != CL_SUCCESS)
            av_log(avctx, AV_LOG_ERROR, "Failed to release "
                   "command queue: %d.\n", cle);
    }

    ff_opencl_filter_uninit(avctx);
}


static const AVFilterPad avgblur_opencl_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = &avgblur_opencl_filter_frame,
        .config_props = &ff_opencl_filter_config_input,
    },
};


static const AVFilterPad avgblur_opencl_outputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = &ff_opencl_filter_config_output,
    },
};


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

#if CONFIG_AVGBLUR_OPENCL_FILTER

static const AVOption avgblur_opencl_options[] = {
    { "sizeX",  "set horizontal size",  OFFSET(radiusH), AV_OPT_TYPE_INT, {.i64=1},   1, 1024, FLAGS },
    { "planes", "set planes to filter", OFFSET(planes),  AV_OPT_TYPE_INT, {.i64=0xF}, 0,  0xF, FLAGS },
    { "sizeY",  "set vertical size",    OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0},   0, 1024, FLAGS },
    { NULL }
};

AVFILTER_DEFINE_CLASS(avgblur_opencl);


const AVFilter ff_vf_avgblur_opencl = {
    .name           = "avgblur_opencl",
    .description    = NULL_IF_CONFIG_SMALL("Apply average blur filter"),
    .priv_size      = sizeof(AverageBlurOpenCLContext),
    .priv_class     = &avgblur_opencl_class,
    .init           = &ff_opencl_filter_init,
    .uninit         = &avgblur_opencl_uninit,
    FILTER_INPUTS(avgblur_opencl_inputs),
    FILTER_OUTPUTS(avgblur_opencl_outputs),
    FILTER_QUERY_FUNC(&ff_opencl_filter_query_formats),
    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};

#endif /* CONFIG_AVGBLUR_OPENCL_FILTER */


#if CONFIG_BOXBLUR_OPENCL_FILTER

static const AVOption boxblur_opencl_options[] = {
    { "luma_radius", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
    { "lr",          "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
    { "luma_power",  "How many times should the boxblur be applied to luma",  OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },
    { "lp",          "How many times should the boxblur be applied to luma",  OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },

    { "chroma_radius", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "cr",            "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "chroma_power",  "How many times should the boxblur be applied to chroma",  OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
    { "cp",            "How many times should the boxblur be applied to chroma",  OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },

    { "alpha_radius", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "ar",           "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
    { "alpha_power",  "How many times should the boxblur be applied to alpha",  OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
    { "ap",           "How many times should the boxblur be applied to alpha",  OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },

    { NULL }
};

AVFILTER_DEFINE_CLASS(boxblur_opencl);

const AVFilter ff_vf_boxblur_opencl = {
    .name           = "boxblur_opencl",
    .description    = NULL_IF_CONFIG_SMALL("Apply boxblur filter to input video"),
    .priv_size      = sizeof(AverageBlurOpenCLContext),
    .priv_class     = &boxblur_opencl_class,
    .init           = &ff_opencl_filter_init,
    .uninit         = &avgblur_opencl_uninit,
    FILTER_INPUTS(avgblur_opencl_inputs),
    FILTER_OUTPUTS(avgblur_opencl_outputs),
    FILTER_QUERY_FUNC(&ff_opencl_filter_query_formats),
    .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};

#endif /* CONFIG_BOXBLUR_OPENCL_FILTER */