1 /*
2 * Copyright (C) 2013 Lenny Wang
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/opt.h"
22 #include "libavutil/time.h"
23 #include "libavutil/log.h"
24 #include "libavutil/opencl.h"
25 #include "cmdutils.h"
26
27 typedef struct {
28 int platform_idx;
29 int device_idx;
30 char device_name[64];
31 int64_t runtime;
32 } OpenCLDeviceBenchmark;
33
34 const char *ocl_bench_source = AV_OPENCL_KERNEL(
35 inline unsigned char clip_uint8(int a)
36 {
37 if (a & (~0xFF))
38 return (-a)>>31;
39 else
40 return a;
41 }
42
43 kernel void unsharp_bench(
44 global unsigned char *src,
45 global unsigned char *dst,
46 global int *mask,
47 int width,
48 int height)
49 {
50 int i, j, local_idx, lc_idx, sum = 0;
51 int2 thread_idx, block_idx, global_idx, lm_idx;
52 thread_idx.x = get_local_id(0);
53 thread_idx.y = get_local_id(1);
54 block_idx.x = get_group_id(0);
55 block_idx.y = get_group_id(1);
56 global_idx.x = get_global_id(0);
57 global_idx.y = get_global_id(1);
58 local uchar data[32][32];
59 local int lc[128];
60
61 for (i = 0; i <= 1; i++) {
62 lm_idx.y = -8 + (block_idx.y + i) * 16 + thread_idx.y;
63 lm_idx.y = lm_idx.y < 0 ? 0 : lm_idx.y;
64 lm_idx.y = lm_idx.y >= height ? height - 1: lm_idx.y;
65 for (j = 0; j <= 1; j++) {
66 lm_idx.x = -8 + (block_idx.x + j) * 16 + thread_idx.x;
67 lm_idx.x = lm_idx.x < 0 ? 0 : lm_idx.x;
68 lm_idx.x = lm_idx.x >= width ? width - 1: lm_idx.x;
69 data[i*16 + thread_idx.y][j*16 + thread_idx.x] = src[lm_idx.y*width + lm_idx.x];
70 }
71 }
72 local_idx = thread_idx.y*16 + thread_idx.x;
73 if (local_idx < 128)
74 lc[local_idx] = mask[local_idx];
75 barrier(CLK_LOCAL_MEM_FENCE);
76
77 \n#pragma unroll\n
78 for (i = -4; i <= 4; i++) {
79 lm_idx.y = 8 + i + thread_idx.y;
80 \n#pragma unroll\n
81 for (j = -4; j <= 4; j++) {
82 lm_idx.x = 8 + j + thread_idx.x;
83 lc_idx = (i + 4)*8 + j + 4;
84 sum += (int)data[lm_idx.y][lm_idx.x] * lc[lc_idx];
85 }
86 }
87 int temp = (int)data[thread_idx.y + 8][thread_idx.x + 8];
88 int res = temp + (((temp - (int)((sum + 1<<15) >> 16))) >> 16);
89 if (global_idx.x < width && global_idx.y < height)
90 dst[global_idx.x + global_idx.y*width] = clip_uint8(res);
91 }
92 );
93
94 #define OCLCHECK(method, ... ) \
95 do { \
96 status = method(__VA_ARGS__); \
97 if (status != CL_SUCCESS) { \
98 av_log(NULL, AV_LOG_ERROR, # method " error '%s'\n", \
99 av_opencl_errstr(status)); \
100 ret = AVERROR_EXTERNAL; \
101 goto end; \
102 } \
103 } while (0)
104
105 #define CREATEBUF(out, flags, size) \
106 do { \
107 out = clCreateBuffer(ext_opencl_env->context, flags, size, NULL, &status); \
108 if (status != CL_SUCCESS) { \
109 av_log(NULL, AV_LOG_ERROR, "Could not create OpenCL buffer\n"); \
110 ret = AVERROR_EXTERNAL; \
111 goto end; \
112 } \
113 } while (0)
114
fill_rand_int(int * data,int n)115 static void fill_rand_int(int *data, int n)
116 {
117 int i;
118 srand(av_gettime());
119 for (i = 0; i < n; i++)
120 data[i] = rand();
121 }
122
123 #define OPENCL_NB_ITER 5
run_opencl_bench(AVOpenCLExternalEnv * ext_opencl_env)124 static int64_t run_opencl_bench(AVOpenCLExternalEnv *ext_opencl_env)
125 {
126 int i, arg = 0, width = 1920, height = 1088;
127 int64_t start, ret = 0;
128 cl_int status;
129 size_t kernel_len;
130 char *inbuf;
131 int *mask;
132 int buf_size = width * height * sizeof(char);
133 int mask_size = sizeof(uint32_t) * 128;
134
135 cl_mem cl_mask, cl_inbuf, cl_outbuf;
136 cl_kernel kernel = NULL;
137 cl_program program = NULL;
138 size_t local_work_size_2d[2] = {16, 16};
139 size_t global_work_size_2d[2] = {(size_t)width, (size_t)height};
140
141 if (!(inbuf = av_malloc(buf_size)) || !(mask = av_malloc(mask_size))) {
142 av_log(NULL, AV_LOG_ERROR, "Out of memory\n");
143 ret = AVERROR(ENOMEM);
144 goto end;
145 }
146 fill_rand_int((int*)inbuf, buf_size/4);
147 fill_rand_int(mask, mask_size/4);
148
149 CREATEBUF(cl_mask, CL_MEM_READ_ONLY, mask_size);
150 CREATEBUF(cl_inbuf, CL_MEM_READ_ONLY, buf_size);
151 CREATEBUF(cl_outbuf, CL_MEM_READ_WRITE, buf_size);
152
153 kernel_len = strlen(ocl_bench_source);
154 program = clCreateProgramWithSource(ext_opencl_env->context, 1, &ocl_bench_source,
155 &kernel_len, &status);
156 if (status != CL_SUCCESS || !program) {
157 av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark program\n");
158 ret = AVERROR_EXTERNAL;
159 goto end;
160 }
161 status = clBuildProgram(program, 1, &(ext_opencl_env->device_id), NULL, NULL, NULL);
162 if (status != CL_SUCCESS) {
163 av_log(NULL, AV_LOG_ERROR, "OpenCL unable to build benchmark program\n");
164 ret = AVERROR_EXTERNAL;
165 goto end;
166 }
167 kernel = clCreateKernel(program, "unsharp_bench", &status);
168 if (status != CL_SUCCESS) {
169 av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark kernel\n");
170 ret = AVERROR_EXTERNAL;
171 goto end;
172 }
173
174 OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_inbuf, CL_TRUE, 0,
175 buf_size, inbuf, 0, NULL, NULL);
176 OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_mask, CL_TRUE, 0,
177 mask_size, mask, 0, NULL, NULL);
178 OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_inbuf);
179 OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_outbuf);
180 OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_mask);
181 OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &width);
182 OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &height);
183
184 start = av_gettime_relative();
185 for (i = 0; i < OPENCL_NB_ITER; i++)
186 OCLCHECK(clEnqueueNDRangeKernel, ext_opencl_env->command_queue, kernel, 2, NULL,
187 global_work_size_2d, local_work_size_2d, 0, NULL, NULL);
188 clFinish(ext_opencl_env->command_queue);
189 ret = (av_gettime_relative() - start)/OPENCL_NB_ITER;
190 end:
191 if (kernel)
192 clReleaseKernel(kernel);
193 if (program)
194 clReleaseProgram(program);
195 if (cl_inbuf)
196 clReleaseMemObject(cl_inbuf);
197 if (cl_outbuf)
198 clReleaseMemObject(cl_outbuf);
199 if (cl_mask)
200 clReleaseMemObject(cl_mask);
201 av_free(inbuf);
202 av_free(mask);
203 return ret;
204 }
205
compare_ocl_device_desc(const void * a,const void * b)206 static int compare_ocl_device_desc(const void *a, const void *b)
207 {
208 return ((OpenCLDeviceBenchmark*)a)->runtime - ((OpenCLDeviceBenchmark*)b)->runtime;
209 }
210
opt_opencl_bench(void * optctx,const char * opt,const char * arg)211 int opt_opencl_bench(void *optctx, const char *opt, const char *arg)
212 {
213 int i, j, nb_devices = 0, count = 0;
214 int64_t score = 0;
215 AVOpenCLDeviceList *device_list;
216 AVOpenCLDeviceNode *device_node = NULL;
217 OpenCLDeviceBenchmark *devices = NULL;
218 cl_platform_id platform;
219
220 av_opencl_get_device_list(&device_list);
221 for (i = 0; i < device_list->platform_num; i++)
222 nb_devices += device_list->platform_node[i]->device_num;
223 if (!nb_devices) {
224 av_log(NULL, AV_LOG_ERROR, "No OpenCL device detected!\n");
225 return AVERROR(EINVAL);
226 }
227 if (!(devices = av_malloc_array(nb_devices, sizeof(OpenCLDeviceBenchmark)))) {
228 av_log(NULL, AV_LOG_ERROR, "Could not allocate buffer\n");
229 return AVERROR(ENOMEM);
230 }
231
232 for (i = 0; i < device_list->platform_num; i++) {
233 for (j = 0; j < device_list->platform_node[i]->device_num; j++) {
234 device_node = device_list->platform_node[i]->device_node[j];
235 platform = device_list->platform_node[i]->platform_id;
236 score = av_opencl_benchmark(device_node, platform, run_opencl_bench);
237 if (score > 0) {
238 devices[count].platform_idx = i;
239 devices[count].device_idx = j;
240 devices[count].runtime = score;
241 strcpy(devices[count].device_name, device_node->device_name);
242 count++;
243 }
244 }
245 }
246 qsort(devices, count, sizeof(OpenCLDeviceBenchmark), compare_ocl_device_desc);
247 fprintf(stderr, "platform_idx\tdevice_idx\tdevice_name\truntime\n");
248 for (i = 0; i < count; i++)
249 fprintf(stdout, "%d\t%d\t%s\t%"PRId64"\n",
250 devices[i].platform_idx, devices[i].device_idx,
251 devices[i].device_name, devices[i].runtime);
252
253 av_opencl_free_device_list(&device_list);
254 av_free(devices);
255 return 0;
256 }
257
opt_opencl(void * optctx,const char * opt,const char * arg)258 int opt_opencl(void *optctx, const char *opt, const char *arg)
259 {
260 char *key, *value;
261 const char *opts = arg;
262 int ret = 0;
263 while (*opts) {
264 ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value);
265 if (ret < 0)
266 return ret;
267 ret = av_opencl_set_option(key, value);
268 if (ret < 0)
269 return ret;
270 if (*opts)
271 opts++;
272 }
273 return ret;
274 }
275