438 lines
15 KiB
C
438 lines
15 KiB
C
/*
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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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#include "libavutil/log.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "filters.h"
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#include "internal.h"
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#include "opencl.h"
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#include "opencl_source.h"
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#include "video.h"
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enum XFadeTransitions {
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CUSTOM,
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FADE,
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WIPELEFT,
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WIPERIGHT,
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WIPEUP,
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WIPEDOWN,
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SLIDELEFT,
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SLIDERIGHT,
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SLIDEUP,
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SLIDEDOWN,
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NB_TRANSITIONS,
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};
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typedef struct XFadeOpenCLContext {
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OpenCLFilterContext ocf;
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int transition;
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const char *source_file;
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const char *kernel_name;
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int64_t duration;
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int64_t offset;
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int initialised;
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cl_kernel kernel;
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cl_command_queue command_queue;
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int nb_planes;
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int64_t duration_pts;
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int64_t offset_pts;
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int64_t first_pts;
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int64_t last_pts;
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int64_t pts;
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int xfade_is_over;
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int need_second;
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int eof[2];
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AVFrame *xf[2];
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} XFadeOpenCLContext;
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static int xfade_opencl_load(AVFilterContext *avctx,
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enum AVPixelFormat main_format,
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enum AVPixelFormat xfade_format)
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{
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XFadeOpenCLContext *ctx = avctx->priv;
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cl_int cle;
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const AVPixFmtDescriptor *main_desc;
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int err, main_planes;
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const char *kernel_name;
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main_desc = av_pix_fmt_desc_get(main_format);
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if (main_format != xfade_format) {
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av_log(avctx, AV_LOG_ERROR, "Input formats are not same.\n");
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return AVERROR(EINVAL);
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}
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main_planes = 0;
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for (int i = 0; i < main_desc->nb_components; i++)
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main_planes = FFMAX(main_planes,
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main_desc->comp[i].plane + 1);
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ctx->nb_planes = main_planes;
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if (ctx->transition == CUSTOM) {
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err = ff_opencl_filter_load_program_from_file(avctx, ctx->source_file);
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} else {
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err = ff_opencl_filter_load_program(avctx, &ff_source_xfade_cl, 1);
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}
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if (err < 0)
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return err;
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ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
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ctx->ocf.hwctx->device_id,
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0, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
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"command queue %d.\n", cle);
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switch (ctx->transition) {
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case CUSTOM: kernel_name = ctx->kernel_name; break;
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case FADE: kernel_name = "fade"; break;
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case WIPELEFT: kernel_name = "wipeleft"; break;
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case WIPERIGHT: kernel_name = "wiperight"; break;
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case WIPEUP: kernel_name = "wipeup"; break;
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case WIPEDOWN: kernel_name = "wipedown"; break;
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case SLIDELEFT: kernel_name = "slideleft"; break;
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case SLIDERIGHT: kernel_name = "slideright"; break;
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case SLIDEUP: kernel_name = "slideup"; break;
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case SLIDEDOWN: kernel_name = "slidedown"; break;
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default:
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err = AVERROR_BUG;
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goto fail;
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}
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ctx->kernel = clCreateKernel(ctx->ocf.program, kernel_name, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create kernel %d.\n", cle);
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ctx->initialised = 1;
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return 0;
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fail:
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if (ctx->command_queue)
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clReleaseCommandQueue(ctx->command_queue);
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if (ctx->kernel)
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clReleaseKernel(ctx->kernel);
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return err;
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}
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static int xfade_frame(AVFilterContext *avctx, AVFrame *a, AVFrame *b)
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{
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AVFilterLink *outlink = avctx->outputs[0];
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XFadeOpenCLContext *ctx = avctx->priv;
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AVFrame *output;
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cl_int cle;
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cl_float progress = av_clipf(1.f - ((cl_float)(ctx->pts - ctx->first_pts - ctx->offset_pts) / ctx->duration_pts), 0.f, 1.f);
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size_t global_work[2];
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int kernel_arg = 0;
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int err, plane;
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if (!ctx->initialised) {
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AVHWFramesContext *main_fc =
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(AVHWFramesContext*)a->hw_frames_ctx->data;
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AVHWFramesContext *xfade_fc =
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(AVHWFramesContext*)b->hw_frames_ctx->data;
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err = xfade_opencl_load(avctx, main_fc->sw_format,
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xfade_fc->sw_format);
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if (err < 0)
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return err;
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}
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output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!output) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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for (plane = 0; plane < ctx->nb_planes; plane++) {
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cl_mem mem;
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kernel_arg = 0;
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mem = (cl_mem)output->data[plane];
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CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_mem, &mem);
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kernel_arg++;
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mem = (cl_mem)ctx->xf[0]->data[plane];
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CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_mem, &mem);
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kernel_arg++;
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mem = (cl_mem)ctx->xf[1]->data[plane];
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CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_mem, &mem);
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kernel_arg++;
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CL_SET_KERNEL_ARG(ctx->kernel, kernel_arg, cl_float, &progress);
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kernel_arg++;
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err = ff_opencl_filter_work_size_from_image(avctx, global_work,
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output, plane, 0);
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if (err < 0)
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goto fail;
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cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
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global_work, NULL, 0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue xfade kernel "
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"for plane %d: %d.\n", plane, cle);
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}
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cle = clFinish(ctx->command_queue);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
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err = av_frame_copy_props(output, ctx->xf[0]);
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if (err < 0)
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goto fail;
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output->pts = ctx->pts;
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return ff_filter_frame(outlink, output);
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fail:
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av_frame_free(&output);
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return err;
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}
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static int xfade_opencl_config_output(AVFilterLink *outlink)
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{
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AVFilterContext *avctx = outlink->src;
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XFadeOpenCLContext *ctx = avctx->priv;
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AVFilterLink *inlink0 = avctx->inputs[0];
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AVFilterLink *inlink1 = avctx->inputs[1];
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int err;
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err = ff_opencl_filter_config_output(outlink);
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if (err < 0)
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return err;
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if (inlink0->w != inlink1->w || inlink0->h != inlink1->h) {
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av_log(avctx, AV_LOG_ERROR, "First input link %s parameters "
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"(size %dx%d) do not match the corresponding "
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"second input link %s parameters (size %dx%d)\n",
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avctx->input_pads[0].name, inlink0->w, inlink0->h,
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avctx->input_pads[1].name, inlink1->w, inlink1->h);
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return AVERROR(EINVAL);
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}
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if (inlink0->time_base.num != inlink1->time_base.num ||
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inlink0->time_base.den != inlink1->time_base.den) {
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av_log(avctx, AV_LOG_ERROR, "First input link %s timebase "
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"(%d/%d) do not match the corresponding "
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"second input link %s timebase (%d/%d)\n",
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avctx->input_pads[0].name, inlink0->time_base.num, inlink0->time_base.den,
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avctx->input_pads[1].name, inlink1->time_base.num, inlink1->time_base.den);
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return AVERROR(EINVAL);
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}
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ctx->first_pts = ctx->last_pts = ctx->pts = AV_NOPTS_VALUE;
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outlink->time_base = inlink0->time_base;
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outlink->sample_aspect_ratio = inlink0->sample_aspect_ratio;
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outlink->frame_rate = inlink0->frame_rate;
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if (ctx->duration)
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ctx->duration_pts = av_rescale_q(ctx->duration, AV_TIME_BASE_Q, outlink->time_base);
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if (ctx->offset)
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ctx->offset_pts = av_rescale_q(ctx->offset, AV_TIME_BASE_Q, outlink->time_base);
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return 0;
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}
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static int xfade_opencl_activate(AVFilterContext *avctx)
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{
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XFadeOpenCLContext *ctx = avctx->priv;
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AVFilterLink *outlink = avctx->outputs[0];
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AVFrame *in = NULL;
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int ret = 0, status;
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int64_t pts;
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FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, avctx);
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if (ctx->xfade_is_over) {
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ret = ff_inlink_consume_frame(avctx->inputs[1], &in);
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if (ret < 0) {
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return ret;
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} else if (ret > 0) {
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in->pts = (in->pts - ctx->last_pts) + ctx->pts;
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return ff_filter_frame(outlink, in);
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} else if (ff_inlink_acknowledge_status(avctx->inputs[1], &status, &pts)) {
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ff_outlink_set_status(outlink, status, ctx->pts);
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return 0;
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} else if (!ret) {
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if (ff_outlink_frame_wanted(outlink)) {
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ff_inlink_request_frame(avctx->inputs[1]);
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return 0;
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}
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}
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}
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if (ff_inlink_queued_frames(avctx->inputs[0]) > 0) {
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ctx->xf[0] = ff_inlink_peek_frame(avctx->inputs[0], 0);
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if (ctx->xf[0]) {
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if (ctx->first_pts == AV_NOPTS_VALUE) {
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ctx->first_pts = ctx->xf[0]->pts;
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}
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ctx->pts = ctx->xf[0]->pts;
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if (ctx->first_pts + ctx->offset_pts > ctx->xf[0]->pts) {
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ctx->xf[0] = NULL;
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ctx->need_second = 0;
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ff_inlink_consume_frame(avctx->inputs[0], &in);
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return ff_filter_frame(outlink, in);
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}
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ctx->need_second = 1;
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}
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}
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if (ctx->xf[0] && ff_inlink_queued_frames(avctx->inputs[1]) > 0) {
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ff_inlink_consume_frame(avctx->inputs[0], &ctx->xf[0]);
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ff_inlink_consume_frame(avctx->inputs[1], &ctx->xf[1]);
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ctx->last_pts = ctx->xf[1]->pts;
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ctx->pts = ctx->xf[0]->pts;
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if (ctx->xf[0]->pts - (ctx->first_pts + ctx->offset_pts) > ctx->duration_pts)
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ctx->xfade_is_over = 1;
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ret = xfade_frame(avctx, ctx->xf[0], ctx->xf[1]);
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av_frame_free(&ctx->xf[0]);
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av_frame_free(&ctx->xf[1]);
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return ret;
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}
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if (ff_inlink_queued_frames(avctx->inputs[0]) > 0 &&
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ff_inlink_queued_frames(avctx->inputs[1]) > 0) {
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ff_filter_set_ready(avctx, 100);
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return 0;
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}
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if (ff_outlink_frame_wanted(outlink)) {
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if (!ctx->eof[0] && ff_outlink_get_status(avctx->inputs[0])) {
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ctx->eof[0] = 1;
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ctx->xfade_is_over = 1;
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}
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if (!ctx->eof[1] && ff_outlink_get_status(avctx->inputs[1])) {
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ctx->eof[1] = 1;
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}
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if (!ctx->eof[0] && !ctx->xf[0])
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ff_inlink_request_frame(avctx->inputs[0]);
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if (!ctx->eof[1] && (ctx->need_second || ctx->eof[0]))
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ff_inlink_request_frame(avctx->inputs[1]);
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if (ctx->eof[0] && ctx->eof[1] && (
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ff_inlink_queued_frames(avctx->inputs[0]) <= 0 ||
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ff_inlink_queued_frames(avctx->inputs[1]) <= 0))
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ff_outlink_set_status(outlink, AVERROR_EOF, AV_NOPTS_VALUE);
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return 0;
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}
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return FFERROR_NOT_READY;
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}
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static av_cold void xfade_opencl_uninit(AVFilterContext *avctx)
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{
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XFadeOpenCLContext *ctx = avctx->priv;
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cl_int cle;
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if (ctx->kernel) {
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cle = clReleaseKernel(ctx->kernel);
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if (cle != CL_SUCCESS)
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av_log(avctx, AV_LOG_ERROR, "Failed to release "
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"kernel: %d.\n", cle);
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}
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if (ctx->command_queue) {
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cle = clReleaseCommandQueue(ctx->command_queue);
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if (cle != CL_SUCCESS)
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av_log(avctx, AV_LOG_ERROR, "Failed to release "
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"command queue: %d.\n", cle);
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}
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ff_opencl_filter_uninit(avctx);
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}
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static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
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{
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XFadeOpenCLContext *s = inlink->dst->priv;
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return s->xfade_is_over || !s->need_second ?
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ff_null_get_video_buffer (inlink, w, h) :
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ff_default_get_video_buffer(inlink, w, h);
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}
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#define OFFSET(x) offsetof(XFadeOpenCLContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption xfade_opencl_options[] = {
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{ "transition", "set cross fade transition", OFFSET(transition), AV_OPT_TYPE_INT, {.i64=1}, 0, NB_TRANSITIONS-1, FLAGS, .unit = "transition" },
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{ "custom", "custom transition", 0, AV_OPT_TYPE_CONST, {.i64=CUSTOM}, 0, 0, FLAGS, .unit = "transition" },
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{ "fade", "fade transition", 0, AV_OPT_TYPE_CONST, {.i64=FADE}, 0, 0, FLAGS, .unit = "transition" },
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{ "wipeleft", "wipe left transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPELEFT}, 0, 0, FLAGS, .unit = "transition" },
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{ "wiperight", "wipe right transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPERIGHT}, 0, 0, FLAGS, .unit = "transition" },
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{ "wipeup", "wipe up transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPEUP}, 0, 0, FLAGS, .unit = "transition" },
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{ "wipedown", "wipe down transition", 0, AV_OPT_TYPE_CONST, {.i64=WIPEDOWN}, 0, 0, FLAGS, .unit = "transition" },
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{ "slideleft", "slide left transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDELEFT}, 0, 0, FLAGS, .unit = "transition" },
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{ "slideright", "slide right transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDERIGHT}, 0, 0, FLAGS, .unit = "transition" },
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{ "slideup", "slide up transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDEUP}, 0, 0, FLAGS, .unit = "transition" },
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{ "slidedown", "slide down transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDEDOWN}, 0, 0, FLAGS, .unit = "transition" },
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{ "source", "set OpenCL program source file for custom transition", OFFSET(source_file), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS },
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{ "kernel", "set kernel name in program file for custom transition", OFFSET(kernel_name), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS },
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{ "duration", "set cross fade duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=1000000}, 0, 60000000, FLAGS },
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{ "offset", "set cross fade start relative to first input stream", OFFSET(offset), AV_OPT_TYPE_DURATION, {.i64=0}, INT64_MIN, INT64_MAX, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(xfade_opencl);
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static const AVFilterPad xfade_opencl_inputs[] = {
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{
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.name = "main",
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.type = AVMEDIA_TYPE_VIDEO,
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.get_buffer.video = get_video_buffer,
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.config_props = &ff_opencl_filter_config_input,
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},
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{
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.name = "xfade",
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.type = AVMEDIA_TYPE_VIDEO,
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.get_buffer.video = get_video_buffer,
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.config_props = &ff_opencl_filter_config_input,
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},
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};
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static const AVFilterPad xfade_opencl_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = &xfade_opencl_config_output,
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},
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};
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const AVFilter ff_vf_xfade_opencl = {
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.name = "xfade_opencl",
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.description = NULL_IF_CONFIG_SMALL("Cross fade one video with another video."),
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.priv_size = sizeof(XFadeOpenCLContext),
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.priv_class = &xfade_opencl_class,
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.init = &ff_opencl_filter_init,
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.uninit = &xfade_opencl_uninit,
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.activate = &xfade_opencl_activate,
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FILTER_INPUTS(xfade_opencl_inputs),
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FILTER_OUTPUTS(xfade_opencl_outputs),
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FILTER_SINGLE_PIXFMT(AV_PIX_FMT_OPENCL),
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.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
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.flags = AVFILTER_FLAG_HWDEVICE,
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};
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