[FFmpeg-cvslog] lavfi: Add filters to run arbitrary OpenCL programs
Mark Thompson
git at videolan.org
Mon Jan 8 01:51:20 EET 2018
ffmpeg | branch: master | Mark Thompson <sw at jkqxz.net> | Tue Jan 2 23:17:32 2018 +0000| [dfdc14616112acd1586f1c5c709d3adeb60e0086] | committer: Mark Thompson
lavfi: Add filters to run arbitrary OpenCL programs
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dfdc14616112acd1586f1c5c709d3adeb60e0086
---
configure | 2 +
libavfilter/Makefile | 2 +
libavfilter/allfilters.c | 2 +
libavfilter/vf_program_opencl.c | 441 ++++++++++++++++++++++++++++++++++++++++
4 files changed, 447 insertions(+)
diff --git a/configure b/configure
index ab05b9c7f3..1c3e505b04 100755
--- a/configure
+++ b/configure
@@ -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"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 256dfabd66..ef4729dd3f 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -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
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 753ae968aa..42516bbdf9 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -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);
diff --git a/libavfilter/vf_program_opencl.c b/libavfilter/vf_program_opencl.c
new file mode 100644
index 0000000000..d49365aa55
--- /dev/null
+++ b/libavfilter/vf_program_opencl.c
@@ -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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