| /* |
| * 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 |
| */ |
| |
| #ifndef AVFILTER_OPENCL_H |
| #define AVFILTER_OPENCL_H |
| |
| // The intended target is OpenCL 1.2, so disable warnings for APIs |
| // deprecated after that. This primarily applies to clCreateCommandQueue(), |
| // we can't use the replacement clCreateCommandQueueWithProperties() because |
| // it was introduced in OpenCL 2.0. |
| #define CL_USE_DEPRECATED_OPENCL_1_2_APIS |
| |
| #include "libavutil/buffer.h" |
| #include "libavutil/hwcontext.h" |
| #include "libavutil/hwcontext_opencl.h" |
| #include "libavutil/pixfmt.h" |
| |
| #include "avfilter.h" |
| |
| typedef struct OpenCLFilterContext { |
| const AVClass *class; |
| |
| AVBufferRef *device_ref; |
| AVHWDeviceContext *device; |
| AVOpenCLDeviceContext *hwctx; |
| |
| cl_program program; |
| |
| enum AVPixelFormat output_format; |
| int output_width; |
| int output_height; |
| } OpenCLFilterContext; |
| |
| |
| /** |
| * set argument to specific Kernel. |
| * This macro relies on usage of local label "fail" and variables: |
| * avctx, cle and err. |
| */ |
| #define CL_SET_KERNEL_ARG(kernel, arg_num, type, arg) \ |
| cle = clSetKernelArg(kernel, arg_num, sizeof(type), arg); \ |
| if (cle != CL_SUCCESS) { \ |
| av_log(avctx, AV_LOG_ERROR, "Failed to set kernel " \ |
| "argument %d: error %d.\n", arg_num, cle); \ |
| err = AVERROR(EIO); \ |
| goto fail; \ |
| } |
| |
| /** |
| * A helper macro to handle OpenCL errors. It will assign errcode to |
| * variable err, log error msg, and jump to fail label on error. |
| */ |
| #define CL_FAIL_ON_ERROR(errcode, ...) do { \ |
| if (cle != CL_SUCCESS) { \ |
| av_log(avctx, AV_LOG_ERROR, __VA_ARGS__); \ |
| err = errcode; \ |
| goto fail; \ |
| } \ |
| } while(0) |
| |
| /** |
| * Return that all inputs and outputs support only AV_PIX_FMT_OPENCL. |
| */ |
| int ff_opencl_filter_query_formats(AVFilterContext *avctx); |
| |
| /** |
| * Check that the input link contains a suitable hardware frames |
| * context and extract the device from it. |
| */ |
| int ff_opencl_filter_config_input(AVFilterLink *inlink); |
| |
| /** |
| * Create a suitable hardware frames context for the output. |
| */ |
| int ff_opencl_filter_config_output(AVFilterLink *outlink); |
| |
| /** |
| * Initialise an OpenCL filter context. |
| */ |
| int ff_opencl_filter_init(AVFilterContext *avctx); |
| |
| /** |
| * Uninitialise an OpenCL filter context. |
| */ |
| void ff_opencl_filter_uninit(AVFilterContext *avctx); |
| |
| /** |
| * Load a new OpenCL program from strings in memory. |
| * |
| * Creates a new program and compiles it for the current device. |
| * Will log any build errors if compilation fails. |
| */ |
| int ff_opencl_filter_load_program(AVFilterContext *avctx, |
| const char **program_source_array, |
| int nb_strings); |
| |
| /** |
| * Load a new OpenCL program from a file. |
| * |
| * Same as ff_opencl_filter_load_program(), but from a file. |
| */ |
| int ff_opencl_filter_load_program_from_file(AVFilterContext *avctx, |
| const char *filename); |
| |
| /** |
| * Find the work size needed needed for a given plane of an image. |
| */ |
| int ff_opencl_filter_work_size_from_image(AVFilterContext *avctx, |
| size_t *work_size, |
| AVFrame *frame, int plane, |
| int block_alignment); |
| |
| #endif /* AVFILTER_OPENCL_H */ |