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unsharp_opencl.c
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1 /*
2  * Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
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 /**
22  * @file
23  * unsharp input video
24  */
25 
26 #include "unsharp_opencl.h"
27 #include "libavutil/common.h"
28 #include "libavutil/opencl_internal.h"
29 
30 #define PLANE_NUM 3
31 
32 static inline void add_mask_counter(uint32_t *dst, uint32_t *counter1, uint32_t *counter2, int len)
33 {
34  int i;
35  for (i = 0; i < len; i++) {
36  dst[i] = counter1[i] + counter2[i];
37  }
38 }
39 
40 static int compute_mask(int step, uint32_t *mask)
41 {
42  int i, z, ret = 0;
43  int counter_size = sizeof(uint32_t) * (2 * step + 1);
44  uint32_t *temp1_counter, *temp2_counter, **counter;
45  temp1_counter = av_mallocz(counter_size);
46  if (!temp1_counter) {
47  ret = AVERROR(ENOMEM);
48  goto end;
49  }
50  temp2_counter = av_mallocz(counter_size);
51  if (!temp2_counter) {
52  ret = AVERROR(ENOMEM);
53  goto end;
54  }
55  counter = av_mallocz(sizeof(uint32_t *) * (2 * step + 1));
56  if (!counter) {
57  ret = AVERROR(ENOMEM);
58  goto end;
59  }
60  for (i = 0; i < 2 * step + 1; i++) {
61  counter[i] = av_mallocz(counter_size);
62  if (!counter[i]) {
63  ret = AVERROR(ENOMEM);
64  goto end;
65  }
66  }
67  for (i = 0; i < 2 * step + 1; i++) {
68  memset(temp1_counter, 0, counter_size);
69  temp1_counter[i] = 1;
70  for (z = 0; z < step * 2; z += 2) {
71  add_mask_counter(temp2_counter, counter[z], temp1_counter, step * 2);
72  memcpy(counter[z], temp1_counter, counter_size);
73  add_mask_counter(temp1_counter, counter[z + 1], temp2_counter, step * 2);
74  memcpy(counter[z + 1], temp2_counter, counter_size);
75  }
76  }
77  memcpy(mask, temp1_counter, counter_size);
78 end:
79  av_freep(&temp1_counter);
80  av_freep(&temp2_counter);
81  for (i = 0; i < 2 * step + 1; i++) {
82  av_freep(&counter[i]);
83  }
84  av_freep(&counter);
85  return ret;
86 }
87 
88 static int compute_mask_matrix(cl_mem cl_mask_matrix, int step_x, int step_y)
89 {
90  int i, j, ret = 0;
91  uint32_t *mask_matrix, *mask_x, *mask_y;
92  size_t size_matrix = sizeof(uint32_t) * (2 * step_x + 1) * (2 * step_y + 1);
93  mask_x = av_mallocz(sizeof(uint32_t) * (2 * step_x + 1));
94  if (!mask_x) {
95  ret = AVERROR(ENOMEM);
96  goto end;
97  }
98  mask_y = av_mallocz(sizeof(uint32_t) * (2 * step_y + 1));
99  if (!mask_y) {
100  ret = AVERROR(ENOMEM);
101  goto end;
102  }
103  mask_matrix = av_mallocz(size_matrix);
104  if (!mask_matrix) {
105  ret = AVERROR(ENOMEM);
106  goto end;
107  }
108  ret = compute_mask(step_x, mask_x);
109  if (ret < 0)
110  goto end;
111  ret = compute_mask(step_y, mask_y);
112  if (ret < 0)
113  goto end;
114  for (j = 0; j < 2 * step_y + 1; j++) {
115  for (i = 0; i < 2 * step_x + 1; i++) {
116  mask_matrix[i + j * (2 * step_x + 1)] = mask_y[j] * mask_x[i];
117  }
118  }
119  ret = av_opencl_buffer_write(cl_mask_matrix, (uint8_t *)mask_matrix, size_matrix);
120 end:
121  av_freep(&mask_x);
122  av_freep(&mask_y);
123  av_freep(&mask_matrix);
124  return ret;
125 }
126 
127 static int generate_mask(AVFilterContext *ctx)
128 {
129  UnsharpContext *unsharp = ctx->priv;
130  int i, ret = 0, step_x[2], step_y[2];
131  cl_mem mask_matrix[2];
132  mask_matrix[0] = unsharp->opencl_ctx.cl_luma_mask;
133  mask_matrix[1] = unsharp->opencl_ctx.cl_chroma_mask;
134  step_x[0] = unsharp->luma.steps_x;
135  step_x[1] = unsharp->chroma.steps_x;
136  step_y[0] = unsharp->luma.steps_y;
137  step_y[1] = unsharp->chroma.steps_y;
138  if (!mask_matrix[0] || !mask_matrix[1]) {
139  av_log(ctx, AV_LOG_ERROR, "Luma mask and chroma mask should not be NULL\n");
140  return AVERROR(EINVAL);
141  }
142  for (i = 0; i < 2; i++) {
143  ret = compute_mask_matrix(mask_matrix[i], step_x[i], step_y[i]);
144  if (ret < 0)
145  return ret;
146  }
147  return ret;
148 }
149 
150 int ff_opencl_apply_unsharp(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
151 {
152  int ret;
153  AVFilterLink *link = ctx->inputs[0];
154  UnsharpContext *unsharp = ctx->priv;
155  cl_int status;
156  int cw = FF_CEIL_RSHIFT(link->w, unsharp->hsub);
157  int ch = FF_CEIL_RSHIFT(link->h, unsharp->vsub);
158  const size_t global_work_size = link->w * link->h + 2 * ch * cw;
159  FFOpenclParam opencl_param = {0};
160 
161  opencl_param.ctx = ctx;
162  opencl_param.kernel = unsharp->opencl_ctx.kernel_env.kernel;
163  ret = ff_opencl_set_parameter(&opencl_param,
164  FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_inbuf),
165  FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_outbuf),
166  FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_luma_mask),
167  FF_OPENCL_PARAM_INFO(unsharp->opencl_ctx.cl_chroma_mask),
168  FF_OPENCL_PARAM_INFO(unsharp->luma.amount),
169  FF_OPENCL_PARAM_INFO(unsharp->chroma.amount),
170  FF_OPENCL_PARAM_INFO(unsharp->luma.steps_x),
171  FF_OPENCL_PARAM_INFO(unsharp->luma.steps_y),
172  FF_OPENCL_PARAM_INFO(unsharp->chroma.steps_x),
173  FF_OPENCL_PARAM_INFO(unsharp->chroma.steps_y),
174  FF_OPENCL_PARAM_INFO(unsharp->luma.scalebits),
175  FF_OPENCL_PARAM_INFO(unsharp->chroma.scalebits),
176  FF_OPENCL_PARAM_INFO(unsharp->luma.halfscale),
177  FF_OPENCL_PARAM_INFO(unsharp->chroma.halfscale),
178  FF_OPENCL_PARAM_INFO(in->linesize[0]),
179  FF_OPENCL_PARAM_INFO(in->linesize[1]),
180  FF_OPENCL_PARAM_INFO(out->linesize[0]),
181  FF_OPENCL_PARAM_INFO(out->linesize[1]),
182  FF_OPENCL_PARAM_INFO(link->h),
183  FF_OPENCL_PARAM_INFO(link->w),
184  FF_OPENCL_PARAM_INFO(ch),
185  FF_OPENCL_PARAM_INFO(cw),
186  NULL);
187  if (ret < 0)
188  return ret;
189  status = clEnqueueNDRangeKernel(unsharp->opencl_ctx.kernel_env.command_queue,
190  unsharp->opencl_ctx.kernel_env.kernel, 1, NULL,
191  &global_work_size, NULL, 0, NULL, NULL);
192  if (status != CL_SUCCESS) {
193  av_log(ctx, AV_LOG_ERROR, "OpenCL run kernel error occurred: %s\n", av_opencl_errstr(status));
194  return AVERROR_EXTERNAL;
195  }
196  clFinish(unsharp->opencl_ctx.kernel_env.command_queue);
197  return av_opencl_buffer_read_image(out->data, unsharp->opencl_ctx.out_plane_size,
198  unsharp->opencl_ctx.plane_num, unsharp->opencl_ctx.cl_outbuf,
199  unsharp->opencl_ctx.cl_outbuf_size);
200 }
201 
202 int ff_opencl_unsharp_init(AVFilterContext *ctx)
203 {
204  int ret = 0;
205  UnsharpContext *unsharp = ctx->priv;
206  ret = av_opencl_init(NULL);
207  if (ret < 0)
208  return ret;
209  ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_luma_mask,
210  sizeof(uint32_t) * (2 * unsharp->luma.steps_x + 1) * (2 * unsharp->luma.steps_y + 1),
211  CL_MEM_READ_ONLY, NULL);
212  if (ret < 0)
213  return ret;
214  ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_chroma_mask,
215  sizeof(uint32_t) * (2 * unsharp->chroma.steps_x + 1) * (2 * unsharp->chroma.steps_y + 1),
216  CL_MEM_READ_ONLY, NULL);
217  if (ret < 0)
218  return ret;
219  ret = generate_mask(ctx);
220  if (ret < 0)
221  return ret;
222  unsharp->opencl_ctx.plane_num = PLANE_NUM;
223  if (!unsharp->opencl_ctx.kernel_env.kernel) {
224  ret = av_opencl_create_kernel(&unsharp->opencl_ctx.kernel_env, "unsharp");
225  if (ret < 0) {
226  av_log(ctx, AV_LOG_ERROR, "OpenCL failed to create kernel with name 'unsharp'\n");
227  return ret;
228  }
229  }
230  return ret;
231 }
232 
233 void ff_opencl_unsharp_uninit(AVFilterContext *ctx)
234 {
235  UnsharpContext *unsharp = ctx->priv;
236  av_opencl_buffer_release(&unsharp->opencl_ctx.cl_inbuf);
237  av_opencl_buffer_release(&unsharp->opencl_ctx.cl_outbuf);
238  av_opencl_buffer_release(&unsharp->opencl_ctx.cl_luma_mask);
239  av_opencl_buffer_release(&unsharp->opencl_ctx.cl_chroma_mask);
240  av_opencl_release_kernel(&unsharp->opencl_ctx.kernel_env);
241  av_opencl_uninit();
242 }
243 
244 int ff_opencl_unsharp_process_inout_buf(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
245 {
246  int ret = 0;
247  AVFilterLink *link = ctx->inputs[0];
248  UnsharpContext *unsharp = ctx->priv;
249  int ch = FF_CEIL_RSHIFT(link->h, unsharp->vsub);
250 
251  if ((!unsharp->opencl_ctx.cl_inbuf) || (!unsharp->opencl_ctx.cl_outbuf)) {
252  unsharp->opencl_ctx.in_plane_size[0] = (in->linesize[0] * in->height);
253  unsharp->opencl_ctx.in_plane_size[1] = (in->linesize[1] * ch);
254  unsharp->opencl_ctx.in_plane_size[2] = (in->linesize[2] * ch);
255  unsharp->opencl_ctx.out_plane_size[0] = (out->linesize[0] * out->height);
256  unsharp->opencl_ctx.out_plane_size[1] = (out->linesize[1] * ch);
257  unsharp->opencl_ctx.out_plane_size[2] = (out->linesize[2] * ch);
258  unsharp->opencl_ctx.cl_inbuf_size = unsharp->opencl_ctx.in_plane_size[0] +
259  unsharp->opencl_ctx.in_plane_size[1] +
260  unsharp->opencl_ctx.in_plane_size[2];
261  unsharp->opencl_ctx.cl_outbuf_size = unsharp->opencl_ctx.out_plane_size[0] +
262  unsharp->opencl_ctx.out_plane_size[1] +
263  unsharp->opencl_ctx.out_plane_size[2];
264  if (!unsharp->opencl_ctx.cl_inbuf) {
265  ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_inbuf,
266  unsharp->opencl_ctx.cl_inbuf_size,
267  CL_MEM_READ_ONLY, NULL);
268  if (ret < 0)
269  return ret;
270  }
271  if (!unsharp->opencl_ctx.cl_outbuf) {
272  ret = av_opencl_buffer_create(&unsharp->opencl_ctx.cl_outbuf,
273  unsharp->opencl_ctx.cl_outbuf_size,
274  CL_MEM_READ_WRITE, NULL);
275  if (ret < 0)
276  return ret;
277  }
278  }
279  return av_opencl_buffer_write_image(unsharp->opencl_ctx.cl_inbuf,
280  unsharp->opencl_ctx.cl_inbuf_size,
281  0, in->data, unsharp->opencl_ctx.in_plane_size,
282  unsharp->opencl_ctx.plane_num);
283 }
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