mirror of https://github.com/FFmpeg/FFmpeg.git
Reviewed-by: Wei Gao <highgod0401@gmail.com> Reviewed-by: Stefano Sabatini <stefasab@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>pull/51/head
Lenny Wang
11 years ago
committed by
Michael Niedermayer
parent
8e702bd3a8
commit
64f73acd1d
11 changed files with 347 additions and 27 deletions
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/*
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* Copyright (C) 2013 Lenny Wang |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "libavutil/opt.h" |
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#include "libavutil/time.h" |
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#include "libavutil/log.h" |
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#include "libavutil/opencl.h" |
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#include "cmdutils.h" |
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typedef struct { |
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int platform_idx; |
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int device_idx; |
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char device_name[64]; |
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int64_t runtime; |
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} OpenCLDeviceBenchmark; |
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const char *ocl_bench_source = AV_OPENCL_KERNEL( |
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inline unsigned char clip_uint8(int a) |
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{ |
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if (a & (~0xFF)) |
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return (-a)>>31; |
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else |
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return a; |
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} |
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kernel void unsharp_bench( |
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global unsigned char *src, |
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global unsigned char *dst, |
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global int *mask, |
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int width, |
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int height) |
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{ |
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int i, j, local_idx, lc_idx, sum = 0; |
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int2 thread_idx, block_idx, global_idx, lm_idx; |
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thread_idx.x = get_local_id(0); |
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thread_idx.y = get_local_id(1); |
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block_idx.x = get_group_id(0); |
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block_idx.y = get_group_id(1); |
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global_idx.x = get_global_id(0); |
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global_idx.y = get_global_id(1); |
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local uchar data[32][32]; |
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local int lc[128]; |
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for (i = 0; i <= 1; i++) { |
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lm_idx.y = -8 + (block_idx.y + i) * 16 + thread_idx.y; |
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lm_idx.y = lm_idx.y < 0 ? 0 : lm_idx.y; |
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lm_idx.y = lm_idx.y >= height ? height - 1: lm_idx.y; |
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for (j = 0; j <= 1; j++) { |
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lm_idx.x = -8 + (block_idx.x + j) * 16 + thread_idx.x; |
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lm_idx.x = lm_idx.x < 0 ? 0 : lm_idx.x; |
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lm_idx.x = lm_idx.x >= width ? width - 1: lm_idx.x; |
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data[i*16 + thread_idx.y][j*16 + thread_idx.x] = src[lm_idx.y*width + lm_idx.x]; |
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} |
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} |
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local_idx = thread_idx.y*16 + thread_idx.x; |
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if (local_idx < 128) |
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lc[local_idx] = mask[local_idx]; |
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barrier(CLK_LOCAL_MEM_FENCE); |
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\n#pragma unroll\n |
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for (i = -4; i <= 4; i++) { |
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lm_idx.y = 8 + i + thread_idx.y; |
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\n#pragma unroll\n |
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for (j = -4; j <= 4; j++) { |
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lm_idx.x = 8 + j + thread_idx.x; |
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lc_idx = (i + 4)*8 + j + 4; |
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sum += (int)data[lm_idx.y][lm_idx.x] * lc[lc_idx]; |
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} |
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} |
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int temp = (int)data[thread_idx.y + 8][thread_idx.x + 8]; |
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int res = temp + (((temp - (int)((sum + 1<<15) >> 16))) >> 16); |
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if (global_idx.x < width && global_idx.y < height) |
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dst[global_idx.x + global_idx.y*width] = clip_uint8(res); |
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} |
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); |
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#define OCLCHECK(method, ... ) \ |
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do { \
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status = method(__VA_ARGS__); \
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if (status != CL_SUCCESS) { \
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av_log(NULL, AV_LOG_ERROR, # method " error '%s'\n", \
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av_opencl_errstr(status)); \
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ret = AVERROR_EXTERNAL; \
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goto end; \
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} \
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} while (0) |
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#define CREATEBUF(out, flags, size) \ |
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do { \
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out = clCreateBuffer(ext_opencl_env->context, flags, size, NULL, &status); \
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if (status != CL_SUCCESS) { \
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av_log(NULL, AV_LOG_ERROR, "Could not create OpenCL buffer\n"); \
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ret = AVERROR_EXTERNAL; \
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goto end; \
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} \
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} while (0) |
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static void fill_rand_int(int *data, int n) |
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{ |
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int i; |
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srand(av_gettime()); |
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for (i = 0; i < n; i++) |
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data[i] = rand(); |
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} |
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#define OPENCL_NB_ITER 5 |
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static int64_t run_opencl_bench(AVOpenCLExternalEnv *ext_opencl_env) |
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{ |
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int i, arg = 0, width = 1920, height = 1088; |
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int64_t start, ret = 0; |
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cl_int status; |
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size_t kernel_len; |
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char *inbuf; |
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int *mask; |
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int buf_size = width * height * sizeof(char); |
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int mask_size = sizeof(uint32_t) * 128; |
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cl_mem cl_mask, cl_inbuf, cl_outbuf; |
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cl_kernel kernel = NULL; |
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cl_program program = NULL; |
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size_t local_work_size_2d[2] = {16, 16}; |
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size_t global_work_size_2d[2] = {(size_t)width, (size_t)height}; |
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if (!(inbuf = av_malloc(buf_size)) || !(mask = av_malloc(mask_size))) { |
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av_log(NULL, AV_LOG_ERROR, "Out of memory\n"); |
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ret = AVERROR(ENOMEM); |
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goto end; |
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} |
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fill_rand_int((int*)inbuf, buf_size/4); |
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fill_rand_int(mask, mask_size/4); |
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CREATEBUF(cl_mask, CL_MEM_READ_ONLY, mask_size); |
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CREATEBUF(cl_inbuf, CL_MEM_READ_ONLY, buf_size); |
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CREATEBUF(cl_outbuf, CL_MEM_READ_WRITE, buf_size); |
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kernel_len = strlen(ocl_bench_source); |
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program = clCreateProgramWithSource(ext_opencl_env->context, 1, &ocl_bench_source, |
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&kernel_len, &status); |
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if (status != CL_SUCCESS || !program) { |
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av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark program\n"); |
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ret = AVERROR_EXTERNAL; |
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goto end; |
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} |
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status = clBuildProgram(program, 1, &(ext_opencl_env->device_id), NULL, NULL, NULL); |
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if (status != CL_SUCCESS) { |
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av_log(NULL, AV_LOG_ERROR, "OpenCL unable to build benchmark program\n"); |
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ret = AVERROR_EXTERNAL; |
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goto end; |
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} |
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kernel = clCreateKernel(program, "unsharp_bench", &status); |
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if (status != CL_SUCCESS) { |
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av_log(NULL, AV_LOG_ERROR, "OpenCL unable to create benchmark kernel\n"); |
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ret = AVERROR_EXTERNAL; |
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goto end; |
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} |
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OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_inbuf, CL_TRUE, 0, |
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buf_size, inbuf, 0, NULL, NULL); |
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OCLCHECK(clEnqueueWriteBuffer, ext_opencl_env->command_queue, cl_mask, CL_TRUE, 0, |
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mask_size, mask, 0, NULL, NULL); |
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OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_inbuf); |
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OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_outbuf); |
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OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_mem), &cl_mask); |
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OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &width); |
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OCLCHECK(clSetKernelArg, kernel, arg++, sizeof(cl_int), &height); |
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start = av_gettime(); |
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for (i = 0; i < OPENCL_NB_ITER; i++) |
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OCLCHECK(clEnqueueNDRangeKernel, ext_opencl_env->command_queue, kernel, 2, NULL, |
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global_work_size_2d, local_work_size_2d, 0, NULL, NULL); |
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clFinish(ext_opencl_env->command_queue); |
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ret = (av_gettime() - start)/OPENCL_NB_ITER; |
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end: |
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if (kernel) |
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clReleaseKernel(kernel); |
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if (program) |
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clReleaseProgram(program); |
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if (cl_inbuf) |
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clReleaseMemObject(cl_inbuf); |
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if (cl_outbuf) |
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clReleaseMemObject(cl_outbuf); |
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if (cl_mask) |
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clReleaseMemObject(cl_mask); |
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av_free(inbuf); |
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av_free(mask); |
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return ret; |
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} |
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static int compare_ocl_device_desc(const void *a, const void *b) |
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{ |
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return ((OpenCLDeviceBenchmark*)a)->runtime - ((OpenCLDeviceBenchmark*)b)->runtime; |
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} |
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int opt_opencl_bench(void *optctx, const char *opt, const char *arg) |
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{ |
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int i, j, nb_devices = 0, count = 0; |
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int64_t score = 0; |
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AVOpenCLDeviceList *device_list; |
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AVOpenCLDeviceNode *device_node = NULL; |
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OpenCLDeviceBenchmark *devices = NULL; |
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cl_platform_id platform; |
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av_opencl_get_device_list(&device_list); |
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for (i = 0; i < device_list->platform_num; i++) |
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nb_devices += device_list->platform_node[i]->device_num; |
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if (!nb_devices) { |
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av_log(NULL, AV_LOG_ERROR, "No OpenCL device detected!\n"); |
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return AVERROR(EINVAL); |
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} |
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if (!(devices = av_malloc(sizeof(OpenCLDeviceBenchmark) * nb_devices))) { |
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av_log(NULL, AV_LOG_ERROR, "Could not allocate buffer\n"); |
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return AVERROR(ENOMEM); |
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} |
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for (i = 0; i < device_list->platform_num; i++) { |
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for (j = 0; j < device_list->platform_node[i]->device_num; j++) { |
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device_node = device_list->platform_node[i]->device_node[j]; |
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platform = device_list->platform_node[i]->platform_id; |
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score = av_opencl_benchmark(device_node, platform, run_opencl_bench); |
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if (score > 0) { |
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devices[count].platform_idx = i; |
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devices[count].device_idx = j; |
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devices[count].runtime = score; |
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strcpy(devices[count].device_name, device_node->device_name); |
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count++; |
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} |
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} |
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} |
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qsort(devices, count, sizeof(OpenCLDeviceBenchmark), compare_ocl_device_desc); |
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fprintf(stderr, "platform_idx\tdevice_idx\tdevice_name\truntime\n"); |
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for (i = 0; i < count; i++) |
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fprintf(stdout, "%d\t%d\t%s\t%"PRId64"\n", |
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devices[i].platform_idx, devices[i].device_idx, |
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devices[i].device_name, devices[i].runtime); |
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av_opencl_free_device_list(&device_list); |
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av_free(devices); |
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return 0; |
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} |
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int opt_opencl(void *optctx, const char *opt, const char *arg) |
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{ |
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char *key, *value; |
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const char *opts = arg; |
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int ret = 0; |
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while (*opts) { |
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ret = av_opt_get_key_value(&opts, "=", ":", 0, &key, &value); |
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if (ret < 0) |
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return ret; |
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ret = av_opencl_set_option(key, value); |
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if (ret < 0) |
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return ret; |
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if (*opts) |
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opts++; |
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} |
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return ret; |
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} |
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