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lavfi: Add filters to run arbitrary OpenCL programs

tags/n4.0
Mark Thompson 7 years ago
parent
202b59cd3d
commit
dfdc146161
4 changed files with 447 additions and 0 deletions
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  1. +2
    -0
      configure
  2. +2
    -0
      libavfilter/Makefile
  3. +2
    -0
      libavfilter/allfilters.c
  4. +441
    -0
      libavfilter/vf_program_opencl.c

+ 2
- 0
configure View File

@@ -3235,6 +3235,7 @@ negate_filter_deps="lut_filter"
nnedi_filter_deps="gpl"
ocr_filter_deps="libtesseract"
ocv_filter_deps="libopencv"
openclsrc_filter_deps="opencl"
overlay_opencl_filter_deps="opencl"
overlay_qsv_filter_deps="libmfx"
overlay_qsv_filter_select="qsvvpp"
@@ -3244,6 +3245,7 @@ perspective_filter_deps="gpl"
phase_filter_deps="gpl"
pp7_filter_deps="gpl"
pp_filter_deps="gpl postproc"
program_opencl_filter_deps="opencl"
pullup_filter_deps="gpl"
removelogo_filter_deps="avcodec avformat swscale"
repeatfields_filter_deps="gpl"


+ 2
- 0
libavfilter/Makefile View File

@@ -275,6 +275,7 @@ OBJS-$(CONFIG_PP_FILTER) += vf_pp.o
OBJS-$(CONFIG_PP7_FILTER) += vf_pp7.o
OBJS-$(CONFIG_PREMULTIPLY_FILTER) += vf_premultiply.o framesync.o
OBJS-$(CONFIG_PREWITT_FILTER) += vf_convolution.o
OBJS-$(CONFIG_PROGRAM_OPENCL_FILTER) += vf_program_opencl.o opencl.o framesync.o
OBJS-$(CONFIG_PSEUDOCOLOR_FILTER) += vf_pseudocolor.o
OBJS-$(CONFIG_PSNR_FILTER) += vf_psnr.o framesync.o
OBJS-$(CONFIG_PULLUP_FILTER) += vf_pullup.o
@@ -370,6 +371,7 @@ OBJS-$(CONFIG_LIFE_FILTER) += vsrc_life.o
OBJS-$(CONFIG_MANDELBROT_FILTER) += vsrc_mandelbrot.o
OBJS-$(CONFIG_MPTESTSRC_FILTER) += vsrc_mptestsrc.o
OBJS-$(CONFIG_NULLSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_OPENCLSRC_FILTER) += vf_program_opencl.o opencl.o
OBJS-$(CONFIG_RGBTESTSRC_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_SMPTEBARS_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_SMPTEHDBARS_FILTER) += vsrc_testsrc.o


+ 2
- 0
libavfilter/allfilters.c View File

@@ -284,6 +284,7 @@ static void register_all(void)
REGISTER_FILTER(PP7, pp7, vf);
REGISTER_FILTER(PREMULTIPLY, premultiply, vf);
REGISTER_FILTER(PREWITT, prewitt, vf);
REGISTER_FILTER(PROGRAM_OPENCL, program_opencl, vf);
REGISTER_FILTER(PSEUDOCOLOR, pseudocolor, vf);
REGISTER_FILTER(PSNR, psnr, vf);
REGISTER_FILTER(PULLUP, pullup, vf);
@@ -378,6 +379,7 @@ static void register_all(void)
REGISTER_FILTER(MANDELBROT, mandelbrot, vsrc);
REGISTER_FILTER(MPTESTSRC, mptestsrc, vsrc);
REGISTER_FILTER(NULLSRC, nullsrc, vsrc);
REGISTER_FILTER(OPENCLSRC, openclsrc, vsrc);
REGISTER_FILTER(RGBTESTSRC, rgbtestsrc, vsrc);
REGISTER_FILTER(SMPTEBARS, smptebars, vsrc);
REGISTER_FILTER(SMPTEHDBARS, smptehdbars, vsrc);


+ 441
- 0
libavfilter/vf_program_opencl.c View File

@@ -0,0 +1,441 @@
/*
* 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/avstring.h"
#include "libavutil/buffer.h"
#include "libavutil/common.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_opencl.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/opt.h"

#include "avfilter.h"
#include "framesync.h"
#include "internal.h"
#include "opencl.h"
#include "video.h"

typedef struct ProgramOpenCLContext {
OpenCLFilterContext ocf;

int loaded;
cl_uint index;
cl_kernel kernel;
cl_command_queue command_queue;

FFFrameSync fs;
AVFrame **frames;

const char *source_file;
const char *kernel_name;
int nb_inputs;
int width, height;
enum AVPixelFormat source_format;
AVRational source_rate;
} ProgramOpenCLContext;

static int program_opencl_load(AVFilterContext *avctx)
{
ProgramOpenCLContext *ctx = avctx->priv;
cl_int cle;
int err;

err = ff_opencl_filter_load_program_from_file(avctx, ctx->source_file);
if (err < 0)
return err;

ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
ctx->ocf.hwctx->device_id,
0, &cle);
if (!ctx->command_queue) {
av_log(avctx, AV_LOG_ERROR, "Failed to create OpenCL "
"command queue: %d.\n", cle);
return AVERROR(EIO);
}

ctx->kernel = clCreateKernel(ctx->ocf.program, ctx->kernel_name, &cle);
if (!ctx->kernel) {
if (cle == CL_INVALID_KERNEL_NAME) {
av_log(avctx, AV_LOG_ERROR, "Kernel function '%s' not found in "
"program.\n", ctx->kernel_name);
} else {
av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
}
return AVERROR(EIO);
}

ctx->loaded = 1;
return 0;
}

static int program_opencl_run(AVFilterContext *avctx)
{
AVFilterLink *outlink = avctx->outputs[0];
ProgramOpenCLContext *ctx = avctx->priv;
AVFrame *output = NULL;
cl_int cle;
size_t global_work[2];
cl_mem src, dst;
int err, input, plane;

if (!ctx->loaded) {
err = program_opencl_load(avctx);
if (err < 0)
return err;
}

output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!output) {
err = AVERROR(ENOMEM);
goto fail;
}

for (plane = 0; plane < FF_ARRAY_ELEMS(output->data); plane++) {
dst = (cl_mem)output->data[plane];
if (!dst)
break;

cle = clSetKernelArg(ctx->kernel, 0, sizeof(cl_mem), &dst);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"destination image argument: %d.\n", cle);
goto fail;
}
cle = clSetKernelArg(ctx->kernel, 1, sizeof(cl_uint), &ctx->index);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"index argument: %d.\n", cle);
goto fail;
}

for (input = 0; input < ctx->nb_inputs; input++) {
av_assert0(ctx->frames[input]);

src = (cl_mem)ctx->frames[input]->data[plane];
av_assert0(src);

cle = clSetKernelArg(ctx->kernel, 2 + input, sizeof(cl_mem), &src);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"source image argument %d: %d.\n", input, cle);
goto fail;
}
}

cle = clGetImageInfo(dst, CL_IMAGE_WIDTH, sizeof(size_t),
&global_work[0], NULL);
cle = clGetImageInfo(dst, CL_IMAGE_HEIGHT, sizeof(size_t),
&global_work[1], NULL);

av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
"(%zux%zu).\n", plane, global_work[0], global_work[1]);

cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
global_work, NULL, 0, NULL, NULL);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
cle);
err = AVERROR(EIO);
goto fail;
}
}

cle = clFinish(ctx->command_queue);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to finish command queue: %d.\n",
cle);
err = AVERROR(EIO);
goto fail;
}

if (ctx->nb_inputs > 0) {
err = av_frame_copy_props(output, ctx->frames[0]);
if (err < 0)
goto fail;
} else {
output->pts = ctx->index;
}
++ctx->index;

av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(output->format),
output->width, output->height, output->pts);

return ff_filter_frame(outlink, output);

fail:
clFinish(ctx->command_queue);
av_frame_free(&output);
return err;
}

static int program_opencl_request_frame(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;

return program_opencl_run(avctx);
}

static int program_opencl_filter(FFFrameSync *fs)
{
AVFilterContext *avctx = fs->parent;
ProgramOpenCLContext *ctx = avctx->priv;
int err, i;

for (i = 0; i < ctx->nb_inputs; i++) {
err = ff_framesync_get_frame(&ctx->fs, i, &ctx->frames[i], 0);
if (err < 0)
return err;
}

return program_opencl_run(avctx);
}

static int program_opencl_activate(AVFilterContext *avctx)
{
ProgramOpenCLContext *ctx = avctx->priv;

av_assert0(ctx->nb_inputs > 0);

return ff_framesync_activate(&ctx->fs);
}

static int program_opencl_config_output(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
ProgramOpenCLContext *ctx = avctx->priv;
int err;

err = ff_opencl_filter_config_output(outlink);
if (err < 0)
return err;

if (ctx->nb_inputs > 0) {
FFFrameSyncIn *in;
int i;

err = ff_framesync_init(&ctx->fs, avctx, ctx->nb_inputs);
if (err < 0)
return err;

ctx->fs.opaque = ctx;
ctx->fs.on_event = &program_opencl_filter;

in = ctx->fs.in;
for (i = 0; i < ctx->nb_inputs; i++) {
const AVFilterLink *inlink = avctx->inputs[i];

in[i].time_base = inlink->time_base;
in[i].sync = 1;
in[i].before = EXT_STOP;
in[i].after = EXT_INFINITY;
}

err = ff_framesync_configure(&ctx->fs);
if (err < 0)
return err;

} else {
outlink->time_base = av_inv_q(ctx->source_rate);
}

return 0;
}

static av_cold int program_opencl_init(AVFilterContext *avctx)
{
ProgramOpenCLContext *ctx = avctx->priv;
int err;

ff_opencl_filter_init(avctx);

ctx->ocf.output_width = ctx->width;
ctx->ocf.output_height = ctx->height;

if (!strcmp(avctx->filter->name, "openclsrc")) {
if (!ctx->ocf.output_width || !ctx->ocf.output_height) {
av_log(avctx, AV_LOG_ERROR, "OpenCL source requires output "
"dimensions to be specified.\n");
return AVERROR(EINVAL);
}

ctx->nb_inputs = 0;
ctx->ocf.output_format = ctx->source_format;
} else {
int i;

ctx->frames = av_mallocz_array(ctx->nb_inputs,
sizeof(*ctx->frames));
if (!ctx->frames)
return AVERROR(ENOMEM);

for (i = 0; i < ctx->nb_inputs; i++) {
AVFilterPad input;
memset(&input, 0, sizeof(input));

input.type = AVMEDIA_TYPE_VIDEO;
input.name = av_asprintf("input%d", i);
if (!input.name)
return AVERROR(ENOMEM);

input.config_props = &ff_opencl_filter_config_input;

err = ff_insert_inpad(avctx, i, &input);
if (err < 0) {
av_freep(&input.name);
return err;
}
}
}

return 0;
}

static av_cold void program_opencl_uninit(AVFilterContext *avctx)
{
ProgramOpenCLContext *ctx = avctx->priv;
cl_int cle;
int i;

if (ctx->nb_inputs > 0) {
ff_framesync_uninit(&ctx->fs);

av_freep(&ctx->frames);
for (i = 0; i < avctx->nb_inputs; i++)
av_freep(&avctx->input_pads[i].name);
}

if (ctx->kernel) {
cle = clReleaseKernel(ctx->kernel);
if (cle != CL_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed to release "
"kernel: %d.\n", cle);
}

if (ctx->command_queue) {
cle = clReleaseCommandQueue(ctx->command_queue);
if (cle != CL_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed to release "
"command queue: %d.\n", cle);
}

ff_opencl_filter_uninit(avctx);
}

#define OFFSET(x) offsetof(ProgramOpenCLContext, x)
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)

#if CONFIG_PROGRAM_OPENCL_FILTER

static const AVOption program_opencl_options[] = {
{ "source", "OpenCL program source file", OFFSET(source_file),
AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
{ "kernel", "Kernel name in program", OFFSET(kernel_name),
AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },

{ "inputs", "Number of inputs", OFFSET(nb_inputs),
AV_OPT_TYPE_INT, { .i64 = 1 }, 1, INT_MAX, FLAGS },

{ "size", "Video size", OFFSET(width),
AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, FLAGS },
{ "s", "Video size", OFFSET(width),
AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, FLAGS },

{ NULL },
};

FRAMESYNC_DEFINE_CLASS(program_opencl, ProgramOpenCLContext, fs);

static const AVFilterPad program_opencl_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &program_opencl_config_output,
},
{ NULL }
};

AVFilter ff_vf_program_opencl = {
.name = "program_opencl",
.description = NULL_IF_CONFIG_SMALL("Filter video using an OpenCL program"),
.priv_size = sizeof(ProgramOpenCLContext),
.priv_class = &program_opencl_class,
.preinit = &program_opencl_framesync_preinit,
.init = &program_opencl_init,
.uninit = &program_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.activate = &program_opencl_activate,
.inputs = NULL,
.outputs = program_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};

#endif

#if CONFIG_OPENCLSRC_FILTER

static const AVOption openclsrc_options[] = {
{ "source", "OpenCL program source file", OFFSET(source_file),
AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
{ "kernel", "Kernel name in program", OFFSET(kernel_name),
AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },

{ "size", "Video size", OFFSET(width),
AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, FLAGS },
{ "s", "Video size", OFFSET(width),
AV_OPT_TYPE_IMAGE_SIZE, { .str = NULL }, 0, 0, FLAGS },

{ "format", "Video format", OFFSET(source_format),
AV_OPT_TYPE_PIXEL_FMT, { .i64 = AV_PIX_FMT_NONE }, -1, INT_MAX, FLAGS },

{ "rate", "Video frame rate", OFFSET(source_rate),
AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 0, INT_MAX, FLAGS },
{ "r", "Video frame rate", OFFSET(source_rate),
AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 0, INT_MAX, FLAGS },

{ NULL },
};

AVFILTER_DEFINE_CLASS(openclsrc);

static const AVFilterPad openclsrc_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &program_opencl_config_output,
.request_frame = &program_opencl_request_frame,
},
{ NULL }
};

AVFilter ff_vsrc_openclsrc = {
.name = "openclsrc",
.description = NULL_IF_CONFIG_SMALL("Generate video using an OpenCL program"),
.priv_size = sizeof(ProgramOpenCLContext),
.priv_class = &openclsrc_class,
.init = &program_opencl_init,
.uninit = &program_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.inputs = NULL,
.outputs = openclsrc_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};

#endif

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