mirror of https://git.ffmpeg.org/ffmpeg.git
300 lines
14 KiB
C
300 lines
14 KiB
C
/*
|
|
* 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/bprint.h"
|
|
#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;
|
|
|
|
// Groups together information about a kernel argument
|
|
typedef struct OpenCLKernelArg {
|
|
size_t arg_size;
|
|
const void *arg_val;
|
|
} OpenCLKernelArg;
|
|
|
|
/**
|
|
* 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)
|
|
|
|
/**
|
|
* Create a kernel with the given name.
|
|
*
|
|
* The kernel variable in the context structure must have a name of the form
|
|
* kernel_<kernel_name>.
|
|
*
|
|
* The OpenCLFilterContext variable in the context structure must be named ocf.
|
|
*
|
|
* Requires the presence of a local cl_int variable named cle and a fail label for error
|
|
* handling.
|
|
*/
|
|
#define CL_CREATE_KERNEL(ctx, kernel_name) do { \
|
|
ctx->kernel_ ## kernel_name = clCreateKernel(ctx->ocf.program, #kernel_name, &cle); \
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create %s kernel: %d.\n", #kernel_name, cle); \
|
|
} while(0)
|
|
|
|
/**
|
|
* release an OpenCL Kernel
|
|
*/
|
|
#define CL_RELEASE_KERNEL(k) \
|
|
do { \
|
|
if (k) { \
|
|
cle = clReleaseKernel(k); \
|
|
if (cle != CL_SUCCESS) \
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to release " \
|
|
"OpenCL kernel: %d.\n", cle); \
|
|
} \
|
|
} while(0)
|
|
|
|
/**
|
|
* release an OpenCL Memory Object
|
|
*/
|
|
#define CL_RELEASE_MEMORY(m) \
|
|
do { \
|
|
if (m) { \
|
|
cle = clReleaseMemObject(m); \
|
|
if (cle != CL_SUCCESS) \
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to release " \
|
|
"OpenCL memory: %d.\n", cle); \
|
|
} \
|
|
} while(0)
|
|
|
|
/**
|
|
* release an OpenCL Command Queue
|
|
*/
|
|
#define CL_RELEASE_QUEUE(q) \
|
|
do { \
|
|
if (q) { \
|
|
cle = clReleaseCommandQueue(q); \
|
|
if (cle != CL_SUCCESS) \
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to release " \
|
|
"OpenCL command queue: %d.\n", cle); \
|
|
} \
|
|
} while(0)
|
|
|
|
/**
|
|
* Enqueue a kernel with the given information.
|
|
*
|
|
* Kernel arguments are provided as KernelArg structures and are set in the order
|
|
* that they are passed.
|
|
*
|
|
* Requires the presence of a local cl_int variable named cle and a fail label for error
|
|
* handling.
|
|
*/
|
|
#define CL_ENQUEUE_KERNEL_WITH_ARGS(queue, kernel, global_work_size, local_work_size, event, ...) \
|
|
do { \
|
|
OpenCLKernelArg args[] = {__VA_ARGS__}; \
|
|
for (int i = 0; i < FF_ARRAY_ELEMS(args); i++) { \
|
|
cle = clSetKernelArg(kernel, i, args[i].arg_size, args[i].arg_val); \
|
|
if (cle != CL_SUCCESS) { \
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel " \
|
|
"argument %d: error %d.\n", i, cle); \
|
|
err = AVERROR(EIO); \
|
|
goto fail; \
|
|
} \
|
|
} \
|
|
\
|
|
cle = clEnqueueNDRangeKernel( \
|
|
queue, \
|
|
kernel, \
|
|
FF_ARRAY_ELEMS(global_work_size), \
|
|
NULL, \
|
|
global_work_size, \
|
|
local_work_size, \
|
|
0, \
|
|
NULL, \
|
|
event \
|
|
); \
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue kernel: %d.\n", cle); \
|
|
} while (0)
|
|
|
|
/**
|
|
* Uses the above macro to enqueue the given kernel and then additionally runs it to
|
|
* completion via clFinish.
|
|
*
|
|
* Requires the presence of a local cl_int variable named cle and a fail label for error
|
|
* handling.
|
|
*/
|
|
#define CL_RUN_KERNEL_WITH_ARGS(queue, kernel, global_work_size, local_work_size, event, ...) do { \
|
|
CL_ENQUEUE_KERNEL_WITH_ARGS( \
|
|
queue, kernel, global_work_size, local_work_size, event, __VA_ARGS__ \
|
|
); \
|
|
\
|
|
cle = clFinish(queue); \
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle); \
|
|
} while (0)
|
|
|
|
/**
|
|
* Create a buffer with the given information.
|
|
*
|
|
* The buffer variable in the context structure must be named <buffer_name>.
|
|
*
|
|
* Requires the presence of a local cl_int variable named cle and a fail label for error
|
|
* handling.
|
|
*/
|
|
#define CL_CREATE_BUFFER_FLAGS(ctx, buffer_name, flags, size, host_ptr) do { \
|
|
ctx->buffer_name = clCreateBuffer( \
|
|
ctx->ocf.hwctx->context, \
|
|
flags, \
|
|
size, \
|
|
host_ptr, \
|
|
&cle \
|
|
); \
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create buffer %s: %d.\n", #buffer_name, cle); \
|
|
} while(0)
|
|
|
|
/**
|
|
* Perform a blocking write to a buffer.
|
|
*
|
|
* Requires the presence of a local cl_int variable named cle and a fail label for error
|
|
* handling.
|
|
*/
|
|
#define CL_BLOCKING_WRITE_BUFFER(queue, buffer, size, host_ptr, event) do { \
|
|
cle = clEnqueueWriteBuffer( \
|
|
queue, \
|
|
buffer, \
|
|
CL_TRUE, \
|
|
0, \
|
|
size, \
|
|
host_ptr, \
|
|
0, \
|
|
NULL, \
|
|
event \
|
|
); \
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to write buffer to device: %d.\n", cle); \
|
|
} while(0)
|
|
|
|
/**
|
|
* Create a buffer with the given information.
|
|
*
|
|
* The buffer variable in the context structure must be named <buffer_name>.
|
|
*
|
|
* Requires the presence of a local cl_int variable named cle and a fail label for error
|
|
* handling.
|
|
*/
|
|
#define CL_CREATE_BUFFER(ctx, buffer_name, size) CL_CREATE_BUFFER_FLAGS(ctx, buffer_name, 0, size, NULL)
|
|
|
|
/**
|
|
* 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);
|
|
/**
|
|
* Print a 3x3 matrix into a buffer as __constant array, which could
|
|
* be included in an OpenCL program.
|
|
*/
|
|
|
|
void ff_opencl_print_const_matrix_3x3(AVBPrint *buf, const char *name_str,
|
|
double mat[3][3]);
|
|
|
|
/**
|
|
* Gets the command start and end times for the given event and returns the
|
|
* difference (the time that the event took).
|
|
*/
|
|
cl_ulong ff_opencl_get_event_time(cl_event event);
|
|
|
|
#endif /* AVFILTER_OPENCL_H */
|