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101 lines
3.2 KiB
101 lines
3.2 KiB
/* |
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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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#ifndef AVFILTER_OPENCL_H |
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#define AVFILTER_OPENCL_H |
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// The intended target is OpenCL 1.2, so disable warnings for APIs |
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// deprecated after that. This primarily applies to clCreateCommandQueue(), |
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// we can't use the replacement clCreateCommandQueueWithProperties() because |
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// it was introduced in OpenCL 2.0. |
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#define CL_USE_DEPRECATED_OPENCL_1_2_APIS |
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#include "libavutil/buffer.h" |
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#include "libavutil/hwcontext.h" |
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#include "libavutil/hwcontext_opencl.h" |
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#include "libavutil/pixfmt.h" |
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#include "avfilter.h" |
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typedef struct OpenCLFilterContext { |
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const AVClass *class; |
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AVBufferRef *device_ref; |
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AVHWDeviceContext *device; |
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AVOpenCLDeviceContext *hwctx; |
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cl_program program; |
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enum AVPixelFormat output_format; |
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int output_width; |
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int output_height; |
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} OpenCLFilterContext; |
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/** |
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* Return that all inputs and outputs support only AV_PIX_FMT_OPENCL. |
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*/ |
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int ff_opencl_filter_query_formats(AVFilterContext *avctx); |
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/** |
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* Check that the input link contains a suitable hardware frames |
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* context and extract the device from it. |
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*/ |
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int ff_opencl_filter_config_input(AVFilterLink *inlink); |
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/** |
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* Create a suitable hardware frames context for the output. |
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*/ |
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int ff_opencl_filter_config_output(AVFilterLink *outlink); |
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/** |
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* Initialise an OpenCL filter context. |
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*/ |
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int ff_opencl_filter_init(AVFilterContext *avctx); |
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/** |
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* Uninitialise an OpenCL filter context. |
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*/ |
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void ff_opencl_filter_uninit(AVFilterContext *avctx); |
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/** |
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* Load a new OpenCL program from strings in memory. |
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* |
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* Creates a new program and compiles it for the current device. |
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* Will log any build errors if compilation fails. |
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*/ |
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int ff_opencl_filter_load_program(AVFilterContext *avctx, |
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const char **program_source_array, |
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int nb_strings); |
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/** |
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* Load a new OpenCL program from a file. |
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* |
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* Same as ff_opencl_filter_load_program(), but from a file. |
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*/ |
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int ff_opencl_filter_load_program_from_file(AVFilterContext *avctx, |
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const char *filename); |
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/** |
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* Find the work size needed needed for a given plane of an image. |
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*/ |
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int ff_opencl_filter_work_size_from_image(AVFilterContext *avctx, |
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size_t *work_size, |
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AVFrame *frame, int plane, |
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int block_alignment); |
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#endif /* AVFILTER_OPENCL_H */
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