| /* |
| * Copyright (C) 2013 Lenny Wang |
| * |
| * 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/opt.h" |
| #include "libavutil/time.h" |
| #include "libavutil/log.h" |
| #include "libavutil/opencl.h" |
| #include "libavutil/avstring.h" |
| #include "cmdutils.h" |
| |
| typedef struct { |
| int platform_idx; |
| int device_idx; |
| char device_name[64]; |
| int64_t runtime; |
| } OpenCLDeviceBenchmark; |
| |
| const char *ocl_bench_source = AV_OPENCL_KERNEL( |
| inline unsigned char clip_uint8(int a) |
| { |
| if (a & (~0xFF)) |
| return (-a)>>31; |
| else |
| return a; |
| } |
| |
| kernel void unsharp_bench( |
| global unsigned char *src, |
| global unsigned char *dst, |
| global int *mask, |
| int width, |
| int height) |
| { |
| int i, j, local_idx, lc_idx, sum = 0; |
| int2 thread_idx, block_idx, global_idx, lm_idx; |
| thread_idx.x = get_local_id(0); |
| thread_idx.y = get_local_id(1); |
| block_idx.x = get_group_id(0); |
| block_idx.y = get_group_id(1); |
| global_idx.x = get_global_id(0); |
| global_idx.y = get_global_id(1); |
| local uchar data[32][32]; |
| local int lc[128]; |
| |
| for (i = 0; i <= 1; i++) { |
| lm_idx.y = -8 + (block_idx.y + i) * 16 + thread_idx.y; |
| lm_idx.y = lm_idx.y < 0 ? 0 : lm_idx.y; |
| lm_idx.y = lm_idx.y >= height ? height - 1: lm_idx.y; |
| for (j = 0; j <= 1; j++) { |
| lm_idx.x = -8 + (block_idx.x + j) * 16 + thread_idx.x; |
| lm_idx.x = lm_idx.x < 0 ? 0 : lm_idx.x; |
| lm_idx.x = lm_idx.x >= width ? width - 1: lm_idx.x; |
| data[i*16 + thread_idx.y][j*16 + thread_idx.x] = src[lm_idx.y*width + lm_idx.x]; |
| } |
| } |
| local_idx = thread_idx.y*16 + thread_idx.x; |
| if (local_idx < 128) |
| lc[local_idx] = mask[local_idx]; |
| barrier(CLK_LOCAL_MEM_FENCE); |
| |
| \n#pragma unroll\n |
| for (i = -4; i <= 4; i++) { |
| lm_idx.y = 8 + i + thread_idx.y; |
| \n#pragma unroll\n |
| for (j = -4; j <= 4; j++) { |
| lm_idx.x = 8 + j + thread_idx.x; |
| lc_idx = (i + 4)*8 + j + 4; |
| sum += (int)data[lm_idx.y][lm_idx.x] * lc[lc_idx]; |
| } |
| } |
| int temp = (int)data[thread_idx.y + 8][thread_idx.x + 8]; |
| int res = temp + (((temp - (int)((sum + 1<<15) >> 16))) >> 16); |
| if (global_idx.x < width && global_idx.y < height) |
| dst[global_idx.x + global_idx.y*width] = clip_uint8(res); |
| } |
| ); |
| |
| #define OCLCHECK(method, ... ) \ |
| do { \ |
| status = method(__VA_ARGS__); \ |
| if (status != CL_SUCCESS) { \ |
| av_log(NULL, AV_LOG_ERROR, # method " error '%s'\n", \ |
| av_opencl_errstr(status)); \ |
| ret = AVERROR_EXTERNAL; \ |
| goto end; \ |
| } \ |
| } while (0) |
| |
| #define CREATEBUF(out, flags, size) \ |
| do { \ |
| out = clCreateBuffer(ext_opencl_env->context, flags, size, NULL, &status); \ |
| if (status != CL_SUCCESS) { \ |
| av_log(NULL, AV_LOG_ERROR, "Could not create OpenCL buffer\n"); \ |
| ret = AVERROR_EXTERNAL; \ |
| goto end; \ |
| } \ |
| } while (0) |
| |
| static void fill_rand_int(int *data, int n) |
| { |
| int i; |
| srand(av_gettime()); |
| for (i = 0; i < n; i++) |
| data[i] = rand(); |
| } |
| |
| #define OPENCL_NB_ITER 5 |
| static int64_t run_opencl_bench(AVOpenCLExternalEnv *ext_opencl_env) |
| { |
| int i, arg = 0, width = 1920, height = 1088; |
| int64_t start, ret = 0; |
| cl_int status; |
| size_t kernel_len; |
| char *inbuf; |
| int *mask; |
| int buf_size = width * height * sizeof(char); |
| int mask_size = sizeof(uint32_t) * 128; |
| |
| cl_mem cl_mask, cl_inbuf, cl_outbuf; |
| cl_kernel kernel = NULL; |
| cl_program program = NULL; |
| size_t local_work_size_2d[2] = {16, 16}; |
| size_t global_work_size_2d[2] = {(size_t)width, (size_t)height}; |
| |
| if (!(inbuf = av_malloc(buf_size)) || !(mask = av_malloc(mask_size))) { |
| av_log(NULL, AV_LOG_ERROR, "Out of memory\n"); |
| ret = AVERROR(ENOMEM); |
| goto end; |
| } |
| fill_rand_int((int*)inbuf, buf_size/4); |
| fill_rand_int(mask, mask_size/4); |
| |
| CREATEBUF(cl_mask, CL_MEM_READ_ONLY, mask_size); |
| CREATEBUF(cl_inbuf, CL_MEM_READ_ONLY, buf_size); |
| CREATEBUF(cl_outbuf, CL_MEM_READ_WRITE, buf_size); |
| |
| kernel_len = strlen(ocl_bench_source); |
| program = clCreateProgramWithSource(ext_opencl_env->context, 1, &ocl_bench_source, |
| &kernel_len, &status); |
| if (status != CL_SUCCESS || !program) { |
| av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark program\n"); |
| ret = AVERROR_EXTERNAL; |
| goto end; |
| } |
| status = clBuildProgram(program, 1, &(ext_opencl_env->device_id), NULL, NULL, NULL); |
| if (status != CL_SUCCESS) { |
| av_log(NULL, AV_LOG_ERROR, "OpenCL unable to build benchmark program\n"); |
| ret = AVERROR_EXTERNAL; |
| goto end; |
| } |
| kernel = clCreateKernel(program, "unsharp_bench", &status); |
| if (status != CL_SUCCESS) { |
| av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark kernel\n"); |
| ret = AVERROR_EXTERNAL; |
| goto end; |
| } |
| |
| OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_inbuf, CL_TRUE, 0, |
| buf_size, inbuf, 0, NULL, NULL); |
| OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_mask, CL_TRUE, 0, |
| mask_size, mask, 0, NULL, NULL); |
| OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_inbuf); |
| OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_outbuf); |
| OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_mask); |
| OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &width); |
| OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &height); |
| |
| start = av_gettime_relative(); |
| for (i = 0; i < OPENCL_NB_ITER; i++) |
| OCLCHECK(clEnqueueNDRangeKernel, ext_opencl_env->command_queue, kernel, 2, NULL, |
| global_work_size_2d, local_work_size_2d, 0, NULL, NULL); |
| clFinish(ext_opencl_env->command_queue); |
| ret = (av_gettime_relative() - start)/OPENCL_NB_ITER; |
| end: |
| if (kernel) |
| clReleaseKernel(kernel); |
| if (program) |
| clReleaseProgram(program); |
| if (cl_inbuf) |
| clReleaseMemObject(cl_inbuf); |
| if (cl_outbuf) |
| clReleaseMemObject(cl_outbuf); |
| if (cl_mask) |
| clReleaseMemObject(cl_mask); |
| av_free(inbuf); |
| av_free(mask); |
| return ret; |
| } |
| |
| static int compare_ocl_device_desc(const void *a, const void *b) |
| { |
| return ((OpenCLDeviceBenchmark*)a)->runtime - ((OpenCLDeviceBenchmark*)b)->runtime; |
| } |
| |
| int opt_opencl_bench(void *optctx, const char *opt, const char *arg) |
| { |
| int i, j, nb_devices = 0, count = 0; |
| int64_t score = 0; |
| AVOpenCLDeviceList *device_list; |
| AVOpenCLDeviceNode *device_node = NULL; |
| OpenCLDeviceBenchmark *devices = NULL; |
| cl_platform_id platform; |
| |
| av_opencl_get_device_list(&device_list); |
| for (i = 0; i < device_list->platform_num; i++) |
| nb_devices += device_list->platform_node[i]->device_num; |
| if (!nb_devices) { |
| av_log(NULL, AV_LOG_ERROR, "No OpenCL device detected!\n"); |
| return AVERROR(EINVAL); |
| } |
| if (!(devices = av_malloc_array(nb_devices, sizeof(OpenCLDeviceBenchmark)))) { |
| av_log(NULL, AV_LOG_ERROR, "Could not allocate buffer\n"); |
| return AVERROR(ENOMEM); |
| } |
| |
| for (i = 0; i < device_list->platform_num; i++) { |
| for (j = 0; j < device_list->platform_node[i]->device_num; j++) { |
| device_node = device_list->platform_node[i]->device_node[j]; |
| platform = device_list->platform_node[i]->platform_id; |
| score = av_opencl_benchmark(device_node, platform, run_opencl_bench); |
| if (score > 0) { |
| devices[count].platform_idx = i; |
| devices[count].device_idx = j; |
| devices[count].runtime = score; |
| av_strlcpy(devices[count].device_name, device_node->device_name, |
| sizeof(devices[count].device_name)); |
| count++; |
| } |
| } |
| } |
| qsort(devices, count, sizeof(OpenCLDeviceBenchmark), compare_ocl_device_desc); |
| fprintf(stderr, "platform_idx\tdevice_idx\tdevice_name\truntime\n"); |
| for (i = 0; i < count; i++) |
| fprintf(stdout, "%d\t%d\t%s\t%"PRId64"\n", |
| devices[i].platform_idx, devices[i].device_idx, |
| devices[i].device_name, devices[i].runtime); |
| |
| av_opencl_free_device_list(&device_list); |
| av_free(devices); |
| return 0; |
| } |
| |
| int opt_opencl(void *optctx, const char *opt, const char *arg) |
| { |
| char *key, *value; |
| const char *opts = arg; |
| int ret = 0; |
| while (*opts) { |
| ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value); |
| if (ret < 0) |
| return ret; |
| ret = av_opencl_set_option(key, value); |
| if (ret < 0) |
| return ret; |
| if (*opts) |
| opts++; |
| } |
| return ret; |
| } |