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
|
/*
* Copyright (c) Lynne
*
* 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/random_seed.h"
#include "libavutil/vulkan_spirv.h"
#include "libavutil/opt.h"
#include "vulkan_filter.h"
#include "filters.h"
#include "video.h"
typedef struct AvgBlurVulkanContext {
FFVulkanContext vkctx;
int initialized;
FFVkExecPool e;
FFVkQueueFamilyCtx qf;
VkSampler sampler;
FFVulkanShader shd;
/* Push constants / options */
struct {
float filter_norm[4];
int32_t filter_len[2];
} opts;
int size_x;
int size_y;
int planes;
} AvgBlurVulkanContext;
static const char blur_kernel[] = {
C(0, void distort(const ivec2 pos, const int idx) )
C(0, { )
C(1, vec4 sum = vec4(0); )
C(1, for (int y = -filter_len.y; y <= filter_len.y; y++) )
C(1, for (int x = -filter_len.x; x <= filter_len.x; x++) )
C(2, sum += texture(input_img[idx], pos + ivec2(x, y)); )
C(0, )
C(1, imageStore(output_img[idx], pos, sum * filter_norm); )
C(0, } )
};
static av_cold int init_filter(AVFilterContext *ctx, AVFrame *in)
{
int err;
uint8_t *spv_data;
size_t spv_len;
void *spv_opaque = NULL;
AvgBlurVulkanContext *s = ctx->priv;
FFVulkanContext *vkctx = &s->vkctx;
const int planes = av_pix_fmt_count_planes(s->vkctx.output_format);
FFVulkanShader *shd;
FFVkSPIRVCompiler *spv;
FFVulkanDescriptorSetBinding *desc;
spv = ff_vk_spirv_init();
if (!spv) {
av_log(ctx, AV_LOG_ERROR, "Unable to initialize SPIR-V compiler!\n");
return AVERROR_EXTERNAL;
}
ff_vk_qf_init(vkctx, &s->qf, VK_QUEUE_COMPUTE_BIT);
RET(ff_vk_exec_pool_init(vkctx, &s->qf, &s->e, s->qf.nb_queues*4, 0, 0, 0, NULL));
RET(ff_vk_init_sampler(vkctx, &s->sampler, 1, VK_FILTER_LINEAR));
RET(ff_vk_shader_init(vkctx, &s->shd, "avgblur",
VK_SHADER_STAGE_COMPUTE_BIT,
NULL, 0,
32, 1, 1,
0));
shd = &s->shd;
desc = (FFVulkanDescriptorSetBinding []) {
{
.name = "input_img",
.type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
.dimensions = 2,
.elems = planes,
.stages = VK_SHADER_STAGE_COMPUTE_BIT,
.samplers = DUP_SAMPLER(s->sampler),
},
{
.name = "output_img",
.type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
.mem_layout = ff_vk_shader_rep_fmt(s->vkctx.output_format),
.mem_quali = "writeonly",
.dimensions = 2,
.elems = planes,
.stages = VK_SHADER_STAGE_COMPUTE_BIT,
},
};
RET(ff_vk_shader_add_descriptor_set(vkctx, shd, desc, 2, 0, 0));
GLSLC(0, layout(push_constant, std430) uniform pushConstants { );
GLSLC(1, vec4 filter_norm; );
GLSLC(1, ivec2 filter_len; );
GLSLC(0, }; );
GLSLC(0, );
ff_vk_shader_add_push_const(&s->shd, 0, sizeof(s->opts),
VK_SHADER_STAGE_COMPUTE_BIT);
GLSLD( blur_kernel );
GLSLC(0, void main() );
GLSLC(0, { );
GLSLC(1, ivec2 size; );
GLSLC(1, const ivec2 pos = ivec2(gl_GlobalInvocationID.xy); );
for (int i = 0; i < planes; i++) {
GLSLC(0, );
GLSLF(1, size = imageSize(output_img[%i]); ,i);
GLSLC(1, if (!IS_WITHIN(pos, size)) );
GLSLC(2, return; );
if (s->planes & (1 << i)) {
GLSLF(1, distort(pos, %i); ,i);
} else {
GLSLF(1, vec4 res = texture(input_img[%i], pos); ,i);
GLSLF(1, imageStore(output_img[%i], pos, res); ,i);
}
}
GLSLC(0, } );
RET(spv->compile_shader(vkctx, spv, &s->shd, &spv_data, &spv_len, "main",
&spv_opaque));
RET(ff_vk_shader_link(vkctx, &s->shd, spv_data, spv_len, "main"));
RET(ff_vk_shader_register_exec(vkctx, &s->e, &s->shd));
s->initialized = 1;
s->opts.filter_len[0] = s->size_x - 1;
s->opts.filter_len[1] = s->size_y - 1;
s->opts.filter_norm[0] = s->opts.filter_len[0]*2 + 1;
s->opts.filter_norm[0] = 1.0/(s->opts.filter_norm[0]*s->opts.filter_norm[0]);
s->opts.filter_norm[1] = s->opts.filter_norm[0];
s->opts.filter_norm[2] = s->opts.filter_norm[0];
s->opts.filter_norm[3] = s->opts.filter_norm[0];
fail:
if (spv_opaque)
spv->free_shader(spv, &spv_opaque);
if (spv)
spv->uninit(&spv);
return err;
}
static int avgblur_vulkan_filter_frame(AVFilterLink *link, AVFrame *in)
{
int err;
AVFrame *out = NULL;
AVFilterContext *ctx = link->dst;
AvgBlurVulkanContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
err = AVERROR(ENOMEM);
goto fail;
}
if (!s->initialized)
RET(init_filter(ctx, in));
RET(ff_vk_filter_process_simple(&s->vkctx, &s->e, &s->shd,
out, in, s->sampler, &s->opts, sizeof(s->opts)));
err = av_frame_copy_props(out, in);
if (err < 0)
goto fail;
av_frame_free(&in);
return ff_filter_frame(outlink, out);
fail:
av_frame_free(&in);
av_frame_free(&out);
return err;
}
static void avgblur_vulkan_uninit(AVFilterContext *avctx)
{
AvgBlurVulkanContext *s = avctx->priv;
FFVulkanContext *vkctx = &s->vkctx;
FFVulkanFunctions *vk = &vkctx->vkfn;
ff_vk_exec_pool_free(vkctx, &s->e);
ff_vk_shader_free(vkctx, &s->shd);
if (s->sampler)
vk->DestroySampler(vkctx->hwctx->act_dev, s->sampler,
vkctx->hwctx->alloc);
ff_vk_uninit(&s->vkctx);
s->initialized = 0;
}
#define OFFSET(x) offsetof(AvgBlurVulkanContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption avgblur_vulkan_options[] = {
{ "sizeX", "Set horizontal radius", OFFSET(size_x), AV_OPT_TYPE_INT, { .i64 = 3 }, 1, 32, .flags = FLAGS },
{ "sizeY", "Set vertical radius", OFFSET(size_y), AV_OPT_TYPE_INT, { .i64 = 3 }, 1, 32, .flags = FLAGS },
{ "planes", "Set planes to filter (bitmask)", OFFSET(planes), AV_OPT_TYPE_INT, {.i64 = 0xF}, 0, 0xF, .flags = FLAGS },
{ NULL },
};
AVFILTER_DEFINE_CLASS(avgblur_vulkan);
static const AVFilterPad avgblur_vulkan_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = &avgblur_vulkan_filter_frame,
.config_props = &ff_vk_filter_config_input,
},
};
static const AVFilterPad avgblur_vulkan_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &ff_vk_filter_config_output,
},
};
const AVFilter ff_vf_avgblur_vulkan = {
.name = "avgblur_vulkan",
.description = NULL_IF_CONFIG_SMALL("Apply avgblur mask to input video"),
.priv_size = sizeof(AvgBlurVulkanContext),
.init = &ff_vk_filter_init,
.uninit = &avgblur_vulkan_uninit,
FILTER_INPUTS(avgblur_vulkan_inputs),
FILTER_OUTPUTS(avgblur_vulkan_outputs),
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
.priv_class = &avgblur_vulkan_class,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
.flags = AVFILTER_FLAG_HWDEVICE,
};
|
