diff options
Diffstat (limited to 'cmdutils_opencl.c')
| -rw-r--r-- | cmdutils_opencl.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/cmdutils_opencl.c b/cmdutils_opencl.c new file mode 100644 index 0000000000..2a04db9a8a --- /dev/null +++ b/cmdutils_opencl.c @@ -0,0 +1,274 @@ +/* + * 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 "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(); + 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() - 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(sizeof(OpenCLDeviceBenchmark) * nb_devices))) { + 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; + strcpy(devices[count].device_name, device_node->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; +} |