ffmpeg | branch: master | Jorge Estrada <jestrada.l...@gmail.com> | Mon Jun 16 16:33:45 2025 -0700| [ad0a44028dcf0cb9f6f7d3a5c5bd5b4bd57b09f5] | committer: Timo Rothenpieler
avfilter: add pad_cuda filter This patch adds the pad_cuda video filter. A filter similar to the existing pad filter but accelerated by CUDA. The filter shares the same options as the software pad filter. Example usage: ffmpeg -hwaccel cuda -hwaccel_output_format cuda -i input.mp4 -vf "pad_cuda=w=iw+100:h=ih+100:x=-1:y=-1:color=red" out.mp4 Signed-off-by: Timo Rothenpieler <t...@rothenpieler.org> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ad0a44028dcf0cb9f6f7d3a5c5bd5b4bd57b09f5 --- Changelog | 1 + configure | 2 + doc/filters.texi | 24 ++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/version.h | 2 +- libavfilter/vf_pad_cuda.c | 636 +++++++++++++++++++++++++++++++++++++++++++++ libavfilter/vf_pad_cuda.cu | 61 +++++ 8 files changed, 727 insertions(+), 1 deletion(-) diff --git a/Changelog b/Changelog index 81e2cc813f..12914c62b0 100644 --- a/Changelog +++ b/Changelog @@ -19,6 +19,7 @@ version <next>: - VVC decoder supports all content of SCC (Screen Content Coding): IBC (Inter Block Copy), Palette Mode and ACT (Adaptive Color Transform - G.728 decoder +- pad_cuda filter version 7.1: diff --git a/configure b/configure index 976a21b931..63d11de207 100755 --- a/configure +++ b/configure @@ -3362,6 +3362,8 @@ thumbnail_cuda_filter_deps_any="cuda_nvcc cuda_llvm" transpose_npp_filter_deps="ffnvcodec libnpp" overlay_cuda_filter_deps="ffnvcodec" overlay_cuda_filter_deps_any="cuda_nvcc cuda_llvm" +pad_cuda_filter_deps="ffnvcodec" +pad_cuda_filter_deps_any="cuda_nvcc cuda_llvm" sharpen_npp_filter_deps="ffnvcodec libnpp" ddagrab_filter_deps="d3d11va IDXGIOutput1 DXGI_OUTDUPL_FRAME_INFO" diff --git a/doc/filters.texi b/doc/filters.texi index 21dab1045a..ed2956fe75 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -26686,6 +26686,30 @@ See @ref{framesync}. This filter also supports the @ref{framesync} options. + +@anchor{pad_cuda} +@subsection pad_cuda +Add paddings to an input video stream using CUDA. + +This filter is the CUDA-accelerated version of the @ref{pad} filter. It accepts the same options and expressions and provides the same core functionality. +For a detailed description of available options, please see the documentation for the @ref{pad} filter. + +@subsubsection Examples + +@itemize +@item +Add a 200-pixel black border to all sides of a video frame: +@example +ffmpeg -hwaccel cuda -hwaccel_output_format cuda -i input.mp4 -vf "pad_cuda=w=iw+400:h=ih+400:x=200:y=200" -c:v h264_nvenc out.mp4 +@end example + +@item +Pad the input video to a 16:9 aspect ratio, filling with the color "blue": +@example +ffmpeg -hwaccel cuda -hwaccel_output_format cuda -i input.mp4 -vf "pad_cuda=w=ih*16/9/sar:h=ih:x=(ow-iw)/2:y=(oh-ih)/2:color=blue" -c:v h264_nvenc out.mp4 +@end example +@end itemize + @anchor{scale_cuda} @subsection scale_cuda diff --git a/libavfilter/Makefile b/libavfilter/Makefile index 97f8f17272..9e9153f5b0 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -422,6 +422,7 @@ OBJS-$(CONFIG_OVERLAY_VAAPI_FILTER) += vf_overlay_vaapi.o framesync.o v OBJS-$(CONFIG_OVERLAY_VULKAN_FILTER) += vf_overlay_vulkan.o vulkan.o vulkan_filter.o OBJS-$(CONFIG_OWDENOISE_FILTER) += vf_owdenoise.o OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o +OBJS-$(CONFIG_PAD_CUDA_FILTER) += vf_pad_cuda.o vf_pad_cuda.ptx.o cuda/load_helper.o OBJS-$(CONFIG_PAD_OPENCL_FILTER) += vf_pad_opencl.o opencl.o opencl/pad.o OBJS-$(CONFIG_PALETTEGEN_FILTER) += vf_palettegen.o palette.o OBJS-$(CONFIG_PALETTEUSE_FILTER) += vf_paletteuse.o framesync.o palette.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 3bc045b28f..409099bf1f 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -395,6 +395,7 @@ extern const FFFilter ff_vf_overlay_vulkan; extern const FFFilter ff_vf_overlay_cuda; extern const FFFilter ff_vf_owdenoise; extern const FFFilter ff_vf_pad; +extern const FFFilter ff_vf_pad_cuda; extern const FFFilter ff_vf_pad_opencl; extern const FFFilter ff_vf_palettegen; extern const FFFilter ff_vf_paletteuse; diff --git a/libavfilter/version.h b/libavfilter/version.h index d5a6bc143a..1e884d9b44 100644 --- a/libavfilter/version.h +++ b/libavfilter/version.h @@ -31,7 +31,7 @@ #include "version_major.h" -#define LIBAVFILTER_VERSION_MINOR 0 +#define LIBAVFILTER_VERSION_MINOR 1 #define LIBAVFILTER_VERSION_MICRO 100 diff --git a/libavfilter/vf_pad_cuda.c b/libavfilter/vf_pad_cuda.c new file mode 100644 index 0000000000..425d6d2a94 --- /dev/null +++ b/libavfilter/vf_pad_cuda.c @@ -0,0 +1,636 @@ +/* + * 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 + */ + +/** + * @file + * CUDA video padding filter + */ + +#include <float.h> + +#include "filters.h" +#include "libavutil/avstring.h" +#include "libavutil/common.h" +#include "libavutil/cuda_check.h" +#include "libavutil/eval.h" +#include "libavutil/hwcontext.h" +#include "libavutil/hwcontext_cuda_internal.h" +#include "libavutil/imgutils.h" +#include "libavutil/internal.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" +#include "libavutil/colorspace.h" + +#include "cuda/load_helper.h" + +#define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, device_hwctx->internal->cuda_dl, x) +#define DIV_UP(a, b) ( ((a) + (b) - 1) / (b) ) +#define BLOCK_X 32 +#define BLOCK_Y 16 + +static const enum AVPixelFormat supported_formats[] = { + AV_PIX_FMT_YUV420P, + AV_PIX_FMT_YUV444P, + AV_PIX_FMT_YUVA420P, + AV_PIX_FMT_YUVA444P, + AV_PIX_FMT_NV12, +}; + +typedef struct CUDAPadContext { + const AVClass *class; + + AVBufferRef *frames_ctx; + + int w, h; ///< output dimensions, a value of 0 will result in the input size + int x, y; ///< offsets of the input area with respect to the padded area + int in_w, in_h; ///< width and height for the padded input video + + char *w_expr; ///< width expression + char *h_expr; ///< height expression + char *x_expr; ///< x offset expression + char *y_expr; ///< y offset expression + + uint8_t rgba_color[4]; ///< color for the padding area + uint8_t parsed_color[4]; + AVRational aspect; + + int eval_mode; + + int last_out_w, last_out_h; ///< used to evaluate the prior output width and height with the incoming frame + + AVCUDADeviceContext *hwctx; + CUmodule cu_module; + CUfunction cu_func_uchar; + CUfunction cu_func_uchar2; +} CUDAPadContext; + +static const char *const var_names[] = { + "in_w", "iw", + "in_h", "ih", + "out_w", "ow", + "out_h", "oh", + "x", + "y", + "a", + "sar", + "dar", + "hsub", + "vsub", + NULL +}; + +enum { + VAR_IN_W, + VAR_IW, + VAR_IN_H, + VAR_IH, + VAR_OUT_W, + VAR_OW, + VAR_OUT_H, + VAR_OH, + VAR_X, + VAR_Y, + VAR_A, + VAR_SAR, + VAR_DAR, + VAR_HSUB, + VAR_VSUB, + VARS_NB +}; + +enum EvalMode { + EVAL_MODE_INIT, + EVAL_MODE_FRAME, + EVAL_MODE_NB +}; + +static int eval_expr(AVFilterContext *ctx) +{ + CUDAPadContext *s = ctx->priv; + AVFilterLink *inlink = ctx->inputs[0]; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); + + double var_values[VARS_NB], res; + char *expr; + int ret; + + var_values[VAR_IN_W] = var_values[VAR_IW] = s->in_w; + var_values[VAR_IN_H] = var_values[VAR_IH] = s->in_h; + var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN; + var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN; + var_values[VAR_A] = (double)s->in_w / s->in_h; + var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ? + (double)inlink->sample_aspect_ratio.num / + inlink->sample_aspect_ratio.den : 1; + var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR]; + var_values[VAR_HSUB] = 1 << desc->log2_chroma_w; + var_values[VAR_VSUB] = 1 << desc->log2_chroma_h; + + expr = s->w_expr; + ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, NULL, NULL, NULL, NULL, NULL, 0, ctx); + if (ret < 0) + goto fail; + + s->w = res; + if (s->w < 0) { + av_log(ctx, AV_LOG_ERROR, "Width expression is negative.\n"); + ret = AVERROR(EINVAL); + goto fail; + } + + var_values[VAR_OUT_W] = var_values[VAR_OW] = s->w; + + expr = s->h_expr; + ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, NULL, NULL, NULL, NULL, NULL, 0, ctx); + if (ret < 0) + goto fail; + + s->h = res; + if (s->h < 0) { + av_log(ctx, AV_LOG_ERROR, "Height expression is negative.\n"); + ret = AVERROR(EINVAL); + goto fail; + } + var_values[VAR_OUT_H] = var_values[VAR_OH] = s->h; + + if (!s->h) + s->h = s->in_h; + + var_values[VAR_OUT_H] = var_values[VAR_OH] = s->h; + + + expr = s->w_expr; + ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, NULL, NULL, NULL, NULL, NULL, 0, ctx); + if (ret < 0) + goto fail; + + s->w = res; + if (s->w < 0) { + av_log(ctx, AV_LOG_ERROR, "Width expression is negative.\n"); + ret = AVERROR(EINVAL); + goto fail; + } + if (!s->w) + s->w = s->in_w; + + var_values[VAR_OUT_W] = var_values[VAR_OW] = s->w; + + + expr = s->x_expr; + ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, NULL, NULL, NULL, NULL, NULL, 0, ctx); + if (ret < 0) + goto fail; + + s->x = res; + + + expr = s->y_expr; + ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, NULL, NULL, NULL, NULL, NULL, 0, ctx); + if (ret < 0) + goto fail; + + s->y = res; + + if (s->x < 0 || s->x + s->in_w > s->w) { + s->x = (s->w - s->in_w) / 2; + av_log(ctx, AV_LOG_VERBOSE, "centering X offset.\n"); + } + + if (s->y < 0 || s->y + s->in_h > s->h) { + s->y = (s->h - s->in_h) / 2; + av_log(ctx, AV_LOG_VERBOSE, "centering Y offset.\n"); + } + + s->w = av_clip(s->w, 1, INT_MAX); + s->h = av_clip(s->h, 1, INT_MAX); + + if (s->w < s->in_w || s->h < s->in_h) { + av_log(ctx, AV_LOG_ERROR, "Padded size < input size.\n"); + return AVERROR(EINVAL); + } + + av_log(ctx, AV_LOG_DEBUG, + "w:%d h:%d -> w:%d h:%d x:%d y:%d color:0x%02X%02X%02X%02X\n", + inlink->w, inlink->h, s->w, s->h, s->x, s->y, s->rgba_color[0], + s->rgba_color[1], s->rgba_color[2], s->rgba_color[3]); + + return 0; + +fail: + av_log(ctx, AV_LOG_ERROR, "Error evaluating '%s'\n", expr); + return ret; +} + +static int cuda_pad_alloc_out_frames_ctx(AVFilterContext *ctx, AVBufferRef **out_frames_ctx, const int width, const int height) +{ + AVFilterLink *inlink = ctx->inputs[0]; + FilterLink *inl = ff_filter_link(inlink); + AVHWFramesContext *in_frames_ctx = (AVHWFramesContext *)inl->hw_frames_ctx->data; + int ret; + + *out_frames_ctx = av_hwframe_ctx_alloc(in_frames_ctx->device_ref); + if (!*out_frames_ctx) { + return AVERROR(ENOMEM); + } + + AVHWFramesContext *out_fc = (AVHWFramesContext *)(*out_frames_ctx)->data; + out_fc->format = AV_PIX_FMT_CUDA; + out_fc->sw_format = in_frames_ctx->sw_format; + + out_fc->width = FFALIGN(width, 32); + out_fc->height = FFALIGN(height, 32); + + ret = av_hwframe_ctx_init(*out_frames_ctx); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Failed to init output ctx\n"); + av_buffer_unref(out_frames_ctx); + return ret; + } + + return 0; +} + +static av_cold int cuda_pad_init(AVFilterContext *ctx) +{ + CUDAPadContext *s = ctx->priv; + + s->last_out_w = -1; + s->last_out_h = -1; + + return 0; +} + +static av_cold void cuda_pad_uninit(AVFilterContext *ctx) +{ + CUDAPadContext *s = ctx->priv; + CUcontext dummy; + + av_buffer_unref(&s->frames_ctx); + + if (s->hwctx && s->cu_module) { + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + AVCUDADeviceContext *device_hwctx = s->hwctx; + CHECK_CU(cu->cuCtxPushCurrent(s->hwctx->cuda_ctx)); + CHECK_CU(cu->cuModuleUnload(s->cu_module)); + CHECK_CU(cu->cuCtxPopCurrent(&dummy)); + } + + s->cu_module = NULL; + s->hwctx = NULL; +} + +static av_cold int cuda_pad_load_functions(AVFilterContext *ctx) +{ + CUDAPadContext *s = ctx->priv; + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + CUcontext dummy_cu_ctx; + int ret; + + AVCUDADeviceContext *device_hwctx = s->hwctx; + + extern const unsigned char ff_vf_pad_cuda_ptx_data[]; + extern const unsigned int ff_vf_pad_cuda_ptx_len; + + ret = CHECK_CU(cu->cuCtxPushCurrent(device_hwctx->cuda_ctx)); + if (ret < 0) + return ret; + + ret = ff_cuda_load_module(ctx, device_hwctx, &s->cu_module, + ff_vf_pad_cuda_ptx_data, ff_vf_pad_cuda_ptx_len); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Failed to load CUDA module\n"); + goto end; + } + + ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_uchar, s->cu_module, "pad_uchar")); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Failed to load pad_planar_cuda\n"); + goto end; + } + + ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_uchar2, s->cu_module, "pad_uchar2")); + if (ret < 0) + av_log(ctx, AV_LOG_ERROR, "Failed to load pad_uv_cuda\n"); + +end: + CHECK_CU(cu->cuCtxPopCurrent(&dummy_cu_ctx)); + + return ret; +} + +static int cuda_pad_config_props(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + CUDAPadContext *s = ctx->priv; + + AVFilterLink *inlink = ctx->inputs[0]; + FilterLink *inl = ff_filter_link(inlink); + + FilterLink *ol = ff_filter_link(outlink); + + AVHWFramesContext *in_frames_ctx; + int format_supported = 0; + int ret; + + s->in_w = inlink->w; + s->in_h = inlink->h; + ret = eval_expr(ctx); + if (ret < 0) + return ret; + + if (!inl->hw_frames_ctx) { + av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n"); + return AVERROR(EINVAL); + } + + in_frames_ctx = (AVHWFramesContext *)inl->hw_frames_ctx->data; + s->hwctx = in_frames_ctx->device_ctx->hwctx; + + for (int i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) { + if (in_frames_ctx->sw_format == supported_formats[i]) { + format_supported = 1; + break; + } + } + if (!format_supported) { + av_log(ctx, AV_LOG_ERROR, "Unsupported input format.\n"); + return AVERROR(EINVAL); + } + + s->parsed_color[0] = RGB_TO_Y_BT709(s->rgba_color[0], s->rgba_color[1], s->rgba_color[2]); + s->parsed_color[1] = RGB_TO_U_BT709(s->rgba_color[0], s->rgba_color[1], s->rgba_color[2], 0); + s->parsed_color[2] = RGB_TO_V_BT709(s->rgba_color[0], s->rgba_color[1], s->rgba_color[2], 0); + s->parsed_color[3] = s->rgba_color[3]; + + ret = cuda_pad_alloc_out_frames_ctx(ctx, &s->frames_ctx, s->w, s->h); + if (ret < 0) + return ret; + + ol->hw_frames_ctx = av_buffer_ref(s->frames_ctx); + if (!ol->hw_frames_ctx) + return AVERROR(ENOMEM); + + outlink->w = s->w; + outlink->h = s->h; + outlink->time_base = inlink->time_base; + outlink->format = AV_PIX_FMT_CUDA; + + s->last_out_w = s->w; + s->last_out_h = s->h; + + ret = cuda_pad_load_functions(ctx); + if (ret < 0) + return ret; + + return 0; +} + +static int cuda_pad_pad(AVFilterContext *ctx, AVFrame *out, const AVFrame *in) +{ + CUDAPadContext *s = ctx->priv; + FilterLink *inl = ff_filter_link(ctx->inputs[0]); + + AVHWFramesContext *in_frames_ctx = (AVHWFramesContext *)inl->hw_frames_ctx->data; + const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(in_frames_ctx->sw_format); + + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + AVCUDADeviceContext *device_hwctx = s->hwctx; + int ret; + + + const int nb_planes = av_pix_fmt_count_planes(in_frames_ctx->sw_format); + for (int plane = 0; plane < nb_planes; plane++) { + const AVComponentDescriptor *cur_comp = &pixdesc->comp[0]; + for (int comp = 1; comp < pixdesc->nb_components && cur_comp->plane != plane; comp++) + cur_comp = &pixdesc->comp[comp]; + + int hsub = (plane == 1 || plane == 2) ? pixdesc->log2_chroma_w : 0; + int vsub = (plane == 1 || plane == 2) ? pixdesc->log2_chroma_h : 0; + + int src_w = AV_CEIL_RSHIFT(s->in_w, hsub); + int src_h = AV_CEIL_RSHIFT(s->in_h, vsub); + + int dst_w = AV_CEIL_RSHIFT(s->w, hsub); + int dst_h = AV_CEIL_RSHIFT(s->h, vsub); + + int y_plane_offset = AV_CEIL_RSHIFT(s->y, vsub); + int x_plane_offset = AV_CEIL_RSHIFT(s->x, hsub); + + if (x_plane_offset + src_w > dst_w || y_plane_offset + src_h > dst_h) { + av_log(ctx, AV_LOG_ERROR, + "ROI out of bounds in plane %d: offset=(%d,%d) in=(%dx%d) " + "out=(%dx%d)\n", + plane, x_plane_offset, y_plane_offset, src_w, src_h, dst_w, dst_h); + return AVERROR(EINVAL); + } + + int dst_linesize = out->linesize[plane] / cur_comp->step; + int src_linesize = in->linesize[plane] / cur_comp->step; + + CUdeviceptr d_dst = (CUdeviceptr)out->data[plane]; + CUdeviceptr d_src = (CUdeviceptr)in->data[plane]; + + CUfunction cuda_func; + + if (cur_comp->step == 1 && cur_comp->depth == 8) + cuda_func = s->cu_func_uchar; + else if(cur_comp->step == 2 && cur_comp->depth == 8) + cuda_func = s->cu_func_uchar2; + else + return AVERROR_BUG; + + void *kernel_args[] = { + &d_dst, &dst_linesize, &dst_w, &dst_h, + &d_src, &src_linesize, &src_w, &src_h, + &x_plane_offset, &y_plane_offset, &s->parsed_color[plane] + }; + + unsigned int grid_x = DIV_UP(dst_w, BLOCK_X); + unsigned int grid_y = DIV_UP(dst_h, BLOCK_Y); + + ret = CHECK_CU(cu->cuLaunchKernel(cuda_func, grid_x, grid_y, 1, + BLOCK_X, BLOCK_Y, 1, + 0, s->hwctx->stream, kernel_args, NULL)); + + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Failed to launch kernel for plane %d\n", plane); + return ret; + } + } + + return 0; +} + +static int cuda_pad_filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *ctx = inlink->dst; + CUDAPadContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + + FilterLink *outl = ff_filter_link(outlink); + + AVHWFramesContext *out_frames_ctx = (AVHWFramesContext *)outl->hw_frames_ctx->data; + AVCUDADeviceContext *device_hwctx = out_frames_ctx->device_ctx->hwctx; + + int ret; + + if (s->eval_mode == EVAL_MODE_FRAME) { + s->in_w = in->width; + s->in_h = in->height; + s->aspect = in->sample_aspect_ratio; + + ret = eval_expr(ctx); + if (ret < 0) { + av_frame_free(&in); + return ret; + } + } + + + if (s->x == 0 && s->y == 0 && + s->w == in->width && s->h == in->height) { + av_log(ctx, AV_LOG_DEBUG, "No border. Passing the frame unmodified.\n"); + s->last_out_w = s->w; + s->last_out_h = s->h; + return ff_filter_frame(outlink, in); + } + + + if (s->w != s->last_out_w || s->h != s->last_out_h) { + + av_buffer_unref(&s->frames_ctx); + + ret = cuda_pad_alloc_out_frames_ctx(ctx, &s->frames_ctx, s->w, s->h); + if (ret < 0) + return ret; + + av_buffer_unref(&outl->hw_frames_ctx); + outl->hw_frames_ctx = av_buffer_ref(s->frames_ctx); + if (!outl->hw_frames_ctx) { + av_frame_free(&in); + av_log(ctx, AV_LOG_ERROR, "Failed to allocate output frame context.\n"); + return AVERROR(ENOMEM); + } + outlink->w = s->w; + outlink->h = s->h; + + s->last_out_w = s->w; + s->last_out_h = s->h; + } + + AVFrame *out = av_frame_alloc(); + if (!out) { + av_frame_free(&in); + av_log(ctx, AV_LOG_ERROR, "Failed to allocate output AVFrame.\n"); + return AVERROR(ENOMEM); + } + ret = av_hwframe_get_buffer(outl->hw_frames_ctx, out, 0); + if (ret < 0) { + av_log(ctx, AV_LOG_ERROR, "Unable to get output buffer: %s\n", + av_err2str(ret)); + av_frame_free(&out); + av_frame_free(&in); + return ret; + } + + CUcontext dummy; + ret = CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPushCurrent( + device_hwctx->cuda_ctx)); + if (ret < 0) { + av_frame_free(&out); + av_frame_free(&in); + return ret; + } + + ret = cuda_pad_pad(ctx, out, in); + + CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPopCurrent(&dummy)); + + if (ret < 0) { + av_frame_free(&out); + av_frame_free(&in); + return ret; + } + + av_frame_copy_props(out, in); + out->width = s->w; + out->height = s->h; + + + av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den, + (int64_t)in->sample_aspect_ratio.num * out->height * in->width, + (int64_t)in->sample_aspect_ratio.den * out->width * in->height, + INT_MAX); + + av_frame_free(&in); + return ff_filter_frame(outlink, out); +} + +#define OFFSET(x) offsetof(CUDAPadContext, x) +#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) + +static const AVOption cuda_pad_options[] = { + { "width", "set the pad area width expression", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS }, + { "w", "set the pad area width expression", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS }, + { "height", "set the pad area height expression", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS }, + { "h", "set the pad area height expression", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS }, + { "x", "set the x offset expression for the input image position", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, FLAGS }, + { "y", "set the y offset expression for the input image position", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, FLAGS }, + { "color", "set the color of the padded area border", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str = "black"}, .flags = FLAGS }, + { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_INIT}, 0, EVAL_MODE_NB-1, FLAGS, .unit = "eval" }, + { "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" }, + { "frame", "eval expressions during initialization and per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" }, + { "aspect", "pad to fit an aspect instead of a resolution", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, DBL_MAX, FLAGS }, + { NULL } +}; + +static const AVClass cuda_pad_class = { + .class_name = "pad_cuda", + .item_name = av_default_item_name, + .option = cuda_pad_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static const AVFilterPad cuda_pad_inputs[] = {{ + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = cuda_pad_filter_frame +}}; + +static const AVFilterPad cuda_pad_outputs[] = {{ + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = cuda_pad_config_props, +}}; + +const FFFilter ff_vf_pad_cuda = { + .p.name = "pad_cuda", + .p.description = NULL_IF_CONFIG_SMALL("CUDA-based GPU padding filter"), + .init = cuda_pad_init, + .uninit = cuda_pad_uninit, + + .p.priv_class = &cuda_pad_class, + + FILTER_INPUTS(cuda_pad_inputs), + FILTER_OUTPUTS(cuda_pad_outputs), + + FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA), + + .priv_size = sizeof(CUDAPadContext), + .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, +}; diff --git a/libavfilter/vf_pad_cuda.cu b/libavfilter/vf_pad_cuda.cu new file mode 100644 index 0000000000..f1323d122f --- /dev/null +++ b/libavfilter/vf_pad_cuda.cu @@ -0,0 +1,61 @@ +/* + * 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 + */ + +template <typename T> +__device__ void pad_impl(T* dst, int dst_pitch, int dst_w, int dst_h, + const T* src, int src_pitch, int src_w, int src_h, + int roi_x, int roi_y, T fill_val) +{ + const int x = blockIdx.x * blockDim.x + threadIdx.x; + const int y = blockIdx.y * blockDim.y + threadIdx.y; + + if (x >= dst_w || y >= dst_h) { + return; + } + + if (x >= roi_x && x < (roi_x + src_w) && y >= roi_y && y < (roi_y + src_h)) { + const int src_x = x - roi_x; + const int src_y = y - roi_y; + dst[y * dst_pitch + x] = src[src_y * src_pitch + src_x]; + } else { + dst[y * dst_pitch + x] = fill_val; + } +} + + +extern "C" { + +__global__ void pad_uchar(unsigned char* dst, int dst_pitch, int dst_w, int dst_h, + const unsigned char* src, int src_pitch, int src_w, int src_h, + int roi_x, int roi_y, unsigned char fill_val) +{ + pad_impl<unsigned char>(dst, dst_pitch, dst_w, dst_h, + src, src_pitch, src_w, src_h, + roi_x, roi_y, fill_val); +} + +__global__ void pad_uchar2(uchar2* dst, int dst_pitch, int dst_w, int dst_h, + const uchar2* src, int src_pitch, int src_w, int src_h, + int roi_x, int roi_y, uchar2 fill_val) +{ + pad_impl<uchar2>(dst, dst_pitch, dst_w, dst_h, + src, src_pitch, src_w, src_h, + roi_x, roi_y, fill_val); +} + +} _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
