@@ -3638,6 +3638,8 @@ blend_vulkan_filter_deps="vulkan spirv_compiler"
boxblur_filter_deps="gpl"
boxblur_opencl_filter_deps="opencl gpl"
bs2b_filter_deps="libbs2b"
+bwdif_cuda_filter_deps="ffnvcodec"
+bwdif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
chromaber_vulkan_filter_deps="vulkan spirv_compiler"
colorkey_opencl_filter_deps="opencl"
colormatrix_filter_deps="gpl"
@@ -210,6 +210,8 @@ OBJS-$(CONFIG_BOXBLUR_FILTER) += vf_boxblur.o boxblur.o
OBJS-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \
opencl/avgblur.o boxblur.o
OBJS-$(CONFIG_BWDIF_FILTER) += vf_bwdif.o yadif_common.o
+OBJS-$(CONFIG_BWDIF_CUDA_FILTER) += vf_bwdif_cuda.o vf_bwdif_cuda.ptx.o \
+ yadif_common.o
OBJS-$(CONFIG_CAS_FILTER) += vf_cas.o
OBJS-$(CONFIG_CHROMABER_VULKAN_FILTER) += vf_chromaber_vulkan.o vulkan.o vulkan_filter.o
OBJS-$(CONFIG_CHROMAHOLD_FILTER) += vf_chromakey.o
@@ -195,6 +195,7 @@ extern const AVFilter ff_vf_bm3d;
extern const AVFilter ff_vf_boxblur;
extern const AVFilter ff_vf_boxblur_opencl;
extern const AVFilter ff_vf_bwdif;
+extern const AVFilter ff_vf_bwdif_cuda;
extern const AVFilter ff_vf_cas;
extern const AVFilter ff_vf_chromaber_vulkan;
extern const AVFilter ff_vf_chromahold;
new file mode 100644
@@ -0,0 +1,379 @@
+/*
+ * Copyright (C) 2019 Philip Langdale <philipl@overt.org>
+ *
+ * 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/avassert.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_cuda_internal.h"
+#include "libavutil/cuda_check.h"
+#include "internal.h"
+#include "yadif.h"
+
+#include "cuda/load_helper.h"
+
+extern const unsigned char ff_vf_bwdif_cuda_ptx_data[];
+extern const unsigned int ff_vf_bwdif_cuda_ptx_len;
+
+typedef struct DeintCUDAContext {
+ YADIFContext yadif;
+
+ AVCUDADeviceContext *hwctx;
+ AVBufferRef *device_ref;
+ AVBufferRef *input_frames_ref;
+ AVHWFramesContext *input_frames;
+
+ CUcontext cu_ctx;
+ CUstream stream;
+ CUmodule cu_module;
+ CUfunction cu_func_uchar;
+ CUfunction cu_func_uchar2;
+ CUfunction cu_func_ushort;
+ CUfunction cu_func_ushort2;
+} DeintCUDAContext;
+
+#define DIV_UP(a, b) ( ((a) + (b) - 1) / (b) )
+#define ALIGN_UP(a, b) (((a) + (b) - 1) & ~((b) - 1))
+#define BLOCKX 32
+#define BLOCKY 16
+
+#define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, s->hwctx->internal->cuda_dl, x)
+
+static CUresult call_kernel(AVFilterContext *ctx, CUfunction func,
+ CUdeviceptr prev, CUdeviceptr cur, CUdeviceptr next,
+ CUarray_format format, int channels,
+ int src_width, // Width is pixels per channel
+ int src_height, // Height is pixels per channel
+ int src_pitch, // Pitch is bytes
+ CUdeviceptr dst,
+ int dst_width, // Width is pixels per channel
+ int dst_height, // Height is pixels per channel
+ int dst_pitch, // Pitch is pixels per channel
+ int parity, int tff, int clip_max)
+{
+ DeintCUDAContext *s = ctx->priv;
+ YADIFContext *y = &s->yadif;
+ CudaFunctions *cu = s->hwctx->internal->cuda_dl;
+ CUtexObject tex_prev = 0, tex_cur = 0, tex_next = 0;
+ int is_field_end = y->current_field == YADIF_FIELD_END;
+ int ret;
+
+ void *args[] = { &dst, &tex_prev, &tex_cur, &tex_next,
+ &dst_width, &dst_height, &dst_pitch,
+ &src_width, &src_height, &parity, &tff,
+ &is_field_end, &clip_max };
+
+ CUDA_TEXTURE_DESC tex_desc = {
+ .filterMode = CU_TR_FILTER_MODE_POINT,
+ .flags = CU_TRSF_READ_AS_INTEGER,
+ };
+
+ CUDA_RESOURCE_DESC res_desc = {
+ .resType = CU_RESOURCE_TYPE_PITCH2D,
+ .res.pitch2D.format = format,
+ .res.pitch2D.numChannels = channels,
+ .res.pitch2D.width = src_width,
+ .res.pitch2D.height = src_height,
+ .res.pitch2D.pitchInBytes = src_pitch,
+ };
+
+ res_desc.res.pitch2D.devPtr = (CUdeviceptr)prev;
+ ret = CHECK_CU(cu->cuTexObjectCreate(&tex_prev, &res_desc, &tex_desc, NULL));
+ if (ret < 0)
+ goto exit;
+
+ res_desc.res.pitch2D.devPtr = (CUdeviceptr)cur;
+ ret = CHECK_CU(cu->cuTexObjectCreate(&tex_cur, &res_desc, &tex_desc, NULL));
+ if (ret < 0)
+ goto exit;
+
+ res_desc.res.pitch2D.devPtr = (CUdeviceptr)next;
+ ret = CHECK_CU(cu->cuTexObjectCreate(&tex_next, &res_desc, &tex_desc, NULL));
+ if (ret < 0)
+ goto exit;
+
+ ret = CHECK_CU(cu->cuLaunchKernel(func,
+ DIV_UP(dst_width, BLOCKX), DIV_UP(dst_height, BLOCKY), 1,
+ BLOCKX, BLOCKY, 1,
+ 0, s->stream, args, NULL));
+
+exit:
+ if (tex_prev)
+ CHECK_CU(cu->cuTexObjectDestroy(tex_prev));
+ if (tex_cur)
+ CHECK_CU(cu->cuTexObjectDestroy(tex_cur));
+ if (tex_next)
+ CHECK_CU(cu->cuTexObjectDestroy(tex_next));
+
+ return ret;
+}
+
+static void filter(AVFilterContext *ctx, AVFrame *dst,
+ int parity, int tff)
+{
+ DeintCUDAContext *s = ctx->priv;
+ YADIFContext *y = &s->yadif;
+ CudaFunctions *cu = s->hwctx->internal->cuda_dl;
+ CUcontext dummy;
+ int i, ret;
+
+ ret = CHECK_CU(cu->cuCtxPushCurrent(s->cu_ctx));
+ if (ret < 0)
+ return;
+
+ for (i = 0; i < y->csp->nb_components; i++) {
+ CUfunction func;
+ CUarray_format format;
+ int pixel_size, channels, clip_max;
+ const AVComponentDescriptor *comp = &y->csp->comp[i];
+
+ if (comp->plane < i) {
+ // We process planes as a whole, so don't reprocess
+ // them for additional components
+ continue;
+ }
+
+ pixel_size = (comp->depth + comp->shift) / 8;
+ channels = comp->step / pixel_size;
+ if (pixel_size > 2 || channels > 2) {
+ av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n", y->csp->name);
+ goto exit;
+ }
+ switch (pixel_size) {
+ case 1:
+ func = channels == 1 ? s->cu_func_uchar : s->cu_func_uchar2;
+ format = CU_AD_FORMAT_UNSIGNED_INT8;
+ break;
+ case 2:
+ func = channels == 1 ? s->cu_func_ushort : s->cu_func_ushort2;
+ format = CU_AD_FORMAT_UNSIGNED_INT16;
+ break;
+ default:
+ av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format: %s\n", y->csp->name);
+ goto exit;
+ }
+
+ clip_max = (1 << (comp->depth + comp->shift)) - 1;
+
+ av_log(ctx, AV_LOG_TRACE,
+ "Deinterlacing plane %d: pixel_size: %d channels: %d\n",
+ comp->plane, pixel_size, channels);
+ call_kernel(ctx, func,
+ (CUdeviceptr)y->prev->data[i],
+ (CUdeviceptr)y->cur->data[i],
+ (CUdeviceptr)y->next->data[i],
+ format, channels,
+ AV_CEIL_RSHIFT(y->cur->width, i ? y->csp->log2_chroma_w : 0),
+ AV_CEIL_RSHIFT(y->cur->height, i ? y->csp->log2_chroma_h : 0),
+ y->cur->linesize[i],
+ (CUdeviceptr)dst->data[i],
+ AV_CEIL_RSHIFT(dst->width, i ? y->csp->log2_chroma_w : 0),
+ AV_CEIL_RSHIFT(dst->height, i ? y->csp->log2_chroma_h : 0),
+ dst->linesize[i] / comp->step,
+ parity, tff, clip_max);
+ }
+
+ if (y->current_field == YADIF_FIELD_END) {
+ y->current_field = YADIF_FIELD_NORMAL;
+ }
+
+exit:
+ CHECK_CU(cu->cuCtxPopCurrent(&dummy));
+ return;
+}
+
+static av_cold void deint_cuda_uninit(AVFilterContext *ctx)
+{
+ CUcontext dummy;
+ DeintCUDAContext *s = ctx->priv;
+ YADIFContext *y = &s->yadif;
+
+ if (s->hwctx && s->cu_module) {
+ CudaFunctions *cu = s->hwctx->internal->cuda_dl;
+ CHECK_CU(cu->cuCtxPushCurrent(s->cu_ctx));
+ CHECK_CU(cu->cuModuleUnload(s->cu_module));
+ CHECK_CU(cu->cuCtxPopCurrent(&dummy));
+ }
+
+ av_frame_free(&y->prev);
+ av_frame_free(&y->cur);
+ av_frame_free(&y->next);
+
+ av_buffer_unref(&s->device_ref);
+ s->hwctx = NULL;
+ av_buffer_unref(&s->input_frames_ref);
+ s->input_frames = NULL;
+}
+
+static int config_input(AVFilterLink *inlink)
+{
+ AVFilterContext *ctx = inlink->dst;
+ DeintCUDAContext *s = ctx->priv;
+
+ if (!inlink->hw_frames_ctx) {
+ av_log(ctx, AV_LOG_ERROR, "A hardware frames reference is "
+ "required to associate the processing device.\n");
+ return AVERROR(EINVAL);
+ }
+
+ s->input_frames_ref = av_buffer_ref(inlink->hw_frames_ctx);
+ if (!s->input_frames_ref) {
+ av_log(ctx, AV_LOG_ERROR, "A input frames reference create "
+ "failed.\n");
+ return AVERROR(ENOMEM);
+ }
+ s->input_frames = (AVHWFramesContext*)s->input_frames_ref->data;
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *link)
+{
+ AVHWFramesContext *output_frames;
+ AVFilterContext *ctx = link->src;
+ DeintCUDAContext *s = ctx->priv;
+ YADIFContext *y = &s->yadif;
+ CudaFunctions *cu;
+ int ret = 0;
+ CUcontext dummy;
+
+ av_assert0(s->input_frames);
+ s->device_ref = av_buffer_ref(s->input_frames->device_ref);
+ if (!s->device_ref) {
+ av_log(ctx, AV_LOG_ERROR, "A device reference create "
+ "failed.\n");
+ return AVERROR(ENOMEM);
+ }
+ s->hwctx = ((AVHWDeviceContext*)s->device_ref->data)->hwctx;
+ s->cu_ctx = s->hwctx->cuda_ctx;
+ s->stream = s->hwctx->stream;
+ cu = s->hwctx->internal->cuda_dl;
+
+ link->hw_frames_ctx = av_hwframe_ctx_alloc(s->device_ref);
+ if (!link->hw_frames_ctx) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to create HW frame context "
+ "for output.\n");
+ ret = AVERROR(ENOMEM);
+ goto exit;
+ }
+
+ output_frames = (AVHWFramesContext*)link->hw_frames_ctx->data;
+
+ output_frames->format = AV_PIX_FMT_CUDA;
+ output_frames->sw_format = s->input_frames->sw_format;
+ output_frames->width = ctx->inputs[0]->w;
+ output_frames->height = ctx->inputs[0]->h;
+
+ output_frames->initial_pool_size = 4;
+
+ ret = ff_filter_init_hw_frames(ctx, link, 10);
+ if (ret < 0)
+ goto exit;
+
+ ret = av_hwframe_ctx_init(link->hw_frames_ctx);
+ if (ret < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Failed to initialise CUDA frame "
+ "context for output: %d\n", ret);
+ goto exit;
+ }
+
+ link->time_base = av_mul_q(ctx->inputs[0]->time_base, (AVRational){1, 2});
+ link->w = ctx->inputs[0]->w;
+ link->h = ctx->inputs[0]->h;
+
+ if(y->mode & 1)
+ link->frame_rate = av_mul_q(ctx->inputs[0]->frame_rate,
+ (AVRational){2, 1});
+
+ if (link->w < 3 || link->h < 3) {
+ av_log(ctx, AV_LOG_ERROR, "Video of less than 3 columns or lines is not supported\n");
+ ret = AVERROR(EINVAL);
+ goto exit;
+ }
+
+ y->csp = av_pix_fmt_desc_get(output_frames->sw_format);
+ y->filter = filter;
+
+ ret = CHECK_CU(cu->cuCtxPushCurrent(s->cu_ctx));
+ if (ret < 0)
+ goto exit;
+
+ ret = ff_cuda_load_module(ctx, s->hwctx, &s->cu_module, ff_vf_bwdif_cuda_ptx_data, ff_vf_bwdif_cuda_ptx_len);
+ if (ret < 0)
+ goto exit;
+
+ ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_uchar, s->cu_module, "bwdif_uchar"));
+ if (ret < 0)
+ goto exit;
+
+ ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_uchar2, s->cu_module, "bwdif_uchar2"));
+ if (ret < 0)
+ goto exit;
+
+ ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_ushort, s->cu_module, "bwdif_ushort"));
+ if (ret < 0)
+ goto exit;
+
+ ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_ushort2, s->cu_module, "bwdif_ushort2"));
+ if (ret < 0)
+ goto exit;
+
+exit:
+ CHECK_CU(cu->cuCtxPopCurrent(&dummy));
+
+ return ret;
+}
+
+static const AVClass bwdif_cuda_class = {
+ .class_name = "bwdif_cuda",
+ .item_name = av_default_item_name,
+ .option = ff_yadif_options,
+ .version = LIBAVUTIL_VERSION_INT,
+ .category = AV_CLASS_CATEGORY_FILTER,
+};
+
+static const AVFilterPad deint_cuda_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = ff_yadif_filter_frame,
+ .config_props = config_input,
+ },
+};
+
+static const AVFilterPad deint_cuda_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .request_frame = ff_yadif_request_frame,
+ .config_props = config_output,
+ },
+};
+
+const AVFilter ff_vf_bwdif_cuda = {
+ .name = "bwdif_cuda",
+ .description = NULL_IF_CONFIG_SMALL("Deinterlace CUDA frames"),
+ .priv_size = sizeof(DeintCUDAContext),
+ .priv_class = &bwdif_cuda_class,
+ .uninit = deint_cuda_uninit,
+ FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA),
+ FILTER_INPUTS(deint_cuda_inputs),
+ FILTER_OUTPUTS(deint_cuda_outputs),
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};
new file mode 100644
@@ -0,0 +1,317 @@
+/*
+ * Copyright (C) 2019 Philip Langdale <philipl@overt.org>
+ *
+ * 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
+ */
+
+__device__ static const int coef_lf[2] = { 4309, 213 };
+__device__ static const int coef_hf[3] = { 5570, 3801, 1016 };
+__device__ static const int coef_sp[2] = { 5077, 981 };
+
+template<typename T>
+__inline__ __device__ T max3(T a, T b, T c)
+{
+ T x = max(a, b);
+ return max(x, c);
+}
+
+template<typename T>
+__inline__ __device__ T min3(T a, T b, T c)
+{
+ T x = min(a, b);
+ return min(x, c);
+}
+
+template<typename T>
+__inline__ __device__ T clip(T a, T min, T max)
+{
+ if (a < min) {
+ return min;
+ } else if (a > max) {
+ return max;
+ } else {
+ return a;
+ }
+}
+
+template<typename T>
+__inline__ __device__ T filter_intra(T cur_prefs3, T cur_prefs,
+ T cur_mrefs, T cur_mrefs3,
+ int clip_max)
+{
+ int final = (coef_sp[0] * (cur_mrefs + cur_prefs) -
+ coef_sp[1] * (cur_mrefs3 + cur_prefs3)) >> 13;
+ return clip(final, 0, clip_max);
+}
+
+template<typename T>
+__inline__ __device__ T filter(T cur_prefs3, T cur_prefs, T cur_mrefs, T cur_mrefs3,
+ T prev2_prefs4, T prev2_prefs2, T prev2_0, T prev2_mrefs2, T prev2_mrefs4,
+ T prev_prefs, T prev_mrefs, T next_prefs, T next_mrefs,
+ T next2_prefs4, T next2_prefs2, T next2_0, T next2_mrefs2, T next2_mrefs4,
+ int clip_max)
+{
+ T final;
+
+ int c = cur_mrefs;
+ int d = (prev2_0 + next2_0) >> 1;
+ int e = cur_prefs;
+
+ int temporal_diff0 = abs(prev2_0 - next2_0);
+ int temporal_diff1 = (abs(prev_mrefs - c) + abs(prev_prefs - e)) >> 1;
+ int temporal_diff2 = (abs(next_mrefs - c) + abs(next_prefs - e)) >> 1;
+ int diff = max3(temporal_diff0 >> 1, temporal_diff1, temporal_diff2);
+
+ if (!diff) {
+ final = d;
+ } else {
+ int b = ((prev2_mrefs2 + next2_mrefs2) >> 1) - c;
+ int f = ((prev2_prefs2 + next2_prefs2) >> 1) - e;
+ int dc = d - c;
+ int de = d - e;
+ int mmax = max3(de, dc, min(b, f));
+ int mmin = min3(de, dc, max(b, f));
+ diff = max3(diff, mmin, -mmax);
+
+ int interpol;
+ if (abs(c - e) > temporal_diff0) {
+ interpol = (((coef_hf[0] * (prev2_0 + next2_0)
+ - coef_hf[1] * (prev2_mrefs2 + next2_mrefs2 + prev2_prefs2 + next2_prefs2)
+ + coef_hf[2] * (prev2_mrefs4 + next2_mrefs4 + prev2_prefs4 + next2_mrefs4)) >> 2)
+ + coef_lf[0] * (c + e) - coef_lf[1] * (cur_mrefs3 + cur_prefs3)) >> 13;
+ } else {
+ interpol = (coef_sp[0] * (c + e) - coef_sp[1] * (cur_mrefs3 + cur_prefs3)) >> 13;
+ }
+
+ /*
+ * This part of the original bwdif algorithm is skipped. It appears that
+ * it was carried over from yadif even though the other changes in the
+ * algorithm cause it to actually lower output quality. The spatial
+ * prediction has already been account for in the above block.
+ */
+#if 0
+ if (interpol > d + diff) {
+ interpol = d + diff;
+ } else if (interpol < d - diff) {
+ interpol = d - diff;
+ }
+#endif
+ final = clip(interpol, 0, clip_max);
+ }
+
+ return final;
+}
+
+template<typename T>
+__inline__ __device__ void bwdif_single(T *dst,
+ cudaTextureObject_t prev,
+ cudaTextureObject_t cur,
+ cudaTextureObject_t next,
+ int dst_width, int dst_height, int dst_pitch,
+ int src_width, int src_height,
+ int parity, int tff,
+ int is_field_end, int clip_max)
+{
+ // Identify location
+ int xo = blockIdx.x * blockDim.x + threadIdx.x;
+ int yo = blockIdx.y * blockDim.y + threadIdx.y;
+
+ if (xo >= dst_width || yo >= dst_height) {
+ return;
+ }
+
+ // Don't modify the primary field
+ if (yo % 2 == parity) {
+ dst[yo*dst_pitch+xo] = tex2D<T>(cur, xo, yo);
+ return;
+ }
+
+ T cur_prefs3 = tex2D<T>(cur, xo, yo + 3);
+ T cur_prefs = tex2D<T>(cur, xo, yo + 1);
+ T cur_mrefs = tex2D<T>(cur, xo, yo - 1);
+ T cur_mrefs3 = tex2D<T>(cur, xo, yo - 3);
+
+ if (is_field_end) {
+ dst[yo*dst_pitch+xo] =
+ filter_intra(cur_prefs3, cur_prefs, cur_mrefs, cur_mrefs3, clip_max);
+ return;
+ }
+
+ // Calculate temporal prediction
+ int is_second_field = !(parity ^ tff);
+
+ cudaTextureObject_t prev2 = prev;
+ cudaTextureObject_t prev1 = is_second_field ? cur : prev;
+ cudaTextureObject_t next1 = is_second_field ? next : cur;
+ cudaTextureObject_t next2 = next;
+
+ T prev2_prefs4 = tex2D<T>(prev2, xo, yo + 4);
+ T prev2_prefs2 = tex2D<T>(prev2, xo, yo + 2);
+ T prev2_0 = tex2D<T>(prev2, xo, yo + 0);
+ T prev2_mrefs2 = tex2D<T>(prev2, xo, yo - 2);
+ T prev2_mrefs4 = tex2D<T>(prev2, xo, yo - 4);
+ T prev_prefs = tex2D<T>(prev1, xo, yo + 1);
+ T prev_mrefs = tex2D<T>(prev1, xo, yo - 1);
+ T next_prefs = tex2D<T>(next1, xo, yo + 1);
+ T next_mrefs = tex2D<T>(next1, xo, yo - 1);
+ T next2_prefs4 = tex2D<T>(next2, xo, yo + 4);
+ T next2_prefs2 = tex2D<T>(next2, xo, yo + 2);
+ T next2_0 = tex2D<T>(next2, xo, yo + 0);
+ T next2_mrefs2 = tex2D<T>(next2, xo, yo - 2);
+ T next2_mrefs4 = tex2D<T>(next2, xo, yo - 4);
+
+ dst[yo*dst_pitch+xo] = filter(cur_prefs3, cur_prefs, cur_mrefs, cur_mrefs3,
+ prev2_prefs4, prev2_prefs2, prev2_0, prev2_mrefs2, prev2_mrefs4,
+ prev_prefs, prev_mrefs, next_prefs, next_mrefs,
+ next2_prefs4, next2_prefs2, next2_0, next2_mrefs2, next2_mrefs4,
+ clip_max);
+}
+
+template <typename T>
+__inline__ __device__ void bwdif_double(T *dst,
+ cudaTextureObject_t prev,
+ cudaTextureObject_t cur,
+ cudaTextureObject_t next,
+ int dst_width, int dst_height, int dst_pitch,
+ int src_width, int src_height,
+ int parity, int tff,
+ int is_field_end, int clip_max)
+{
+ int xo = blockIdx.x * blockDim.x + threadIdx.x;
+ int yo = blockIdx.y * blockDim.y + threadIdx.y;
+
+ if (xo >= dst_width || yo >= dst_height) {
+ return;
+ }
+
+ if (yo % 2 == parity) {
+ // Don't modify the primary field
+ dst[yo*dst_pitch+xo] = tex2D<T>(cur, xo, yo);
+ return;
+ }
+
+ T cur_prefs3 = tex2D<T>(cur, xo, yo + 3);
+ T cur_prefs = tex2D<T>(cur, xo, yo + 1);
+ T cur_mrefs = tex2D<T>(cur, xo, yo - 1);
+ T cur_mrefs3 = tex2D<T>(cur, xo, yo - 3);
+
+ if (is_field_end) {
+ T final;
+ final.x = filter_intra(cur_prefs3.x, cur_prefs.x, cur_mrefs.x, cur_mrefs3.x,
+ clip_max);
+ final.y = filter_intra(cur_prefs3.y, cur_prefs.y, cur_mrefs.y, cur_mrefs3.y,
+ clip_max);
+ dst[yo*dst_pitch+xo] = final;
+ return;
+ }
+
+ int is_second_field = !(parity ^ tff);
+
+ cudaTextureObject_t prev2 = prev;
+ cudaTextureObject_t prev1 = is_second_field ? cur : prev;
+ cudaTextureObject_t next1 = is_second_field ? next : cur;
+ cudaTextureObject_t next2 = next;
+
+ T prev2_prefs4 = tex2D<T>(prev2, xo, yo + 4);
+ T prev2_prefs2 = tex2D<T>(prev2, xo, yo + 2);
+ T prev2_0 = tex2D<T>(prev2, xo, yo + 0);
+ T prev2_mrefs2 = tex2D<T>(prev2, xo, yo - 2);
+ T prev2_mrefs4 = tex2D<T>(prev2, xo, yo - 4);
+ T prev_prefs = tex2D<T>(prev1, xo, yo + 1);
+ T prev_mrefs = tex2D<T>(prev1, xo, yo - 1);
+ T next_prefs = tex2D<T>(next1, xo, yo + 1);
+ T next_mrefs = tex2D<T>(next1, xo, yo - 1);
+ T next2_prefs4 = tex2D<T>(next2, xo, yo + 4);
+ T next2_prefs2 = tex2D<T>(next2, xo, yo + 2);
+ T next2_0 = tex2D<T>(next2, xo, yo + 0);
+ T next2_mrefs2 = tex2D<T>(next2, xo, yo - 2);
+ T next2_mrefs4 = tex2D<T>(next2, xo, yo - 4);
+
+ T final;
+ final.x = filter(cur_prefs3.x, cur_prefs.x, cur_mrefs.x, cur_mrefs3.x,
+ prev2_prefs4.x, prev2_prefs2.x, prev2_0.x, prev2_mrefs2.x, prev2_mrefs4.x,
+ prev_prefs.x, prev_mrefs.x, next_prefs.x, next_mrefs.x,
+ next2_prefs4.x, next2_prefs2.x, next2_0.x, next2_mrefs2.x, next2_mrefs4.x,
+ clip_max);
+ final.y = filter(cur_prefs3.y, cur_prefs.y, cur_mrefs.y, cur_mrefs3.y,
+ prev2_prefs4.y, prev2_prefs2.y, prev2_0.y, prev2_mrefs2.y, prev2_mrefs4.y,
+ prev_prefs.y, prev_mrefs.y, next_prefs.y, next_mrefs.y,
+ next2_prefs4.y, next2_prefs2.y, next2_0.y, next2_mrefs2.y, next2_mrefs4.y,
+ clip_max);
+
+ dst[yo*dst_pitch+xo] = final;
+}
+
+extern "C" {
+
+__global__ void bwdif_uchar(unsigned char *dst,
+ cudaTextureObject_t prev,
+ cudaTextureObject_t cur,
+ cudaTextureObject_t next,
+ int dst_width, int dst_height, int dst_pitch,
+ int src_width, int src_height,
+ int parity, int tff, int is_field_end, int clip_max)
+{
+ bwdif_single(dst, prev, cur, next,
+ dst_width, dst_height, dst_pitch,
+ src_width, src_height,
+ parity, tff, is_field_end, clip_max);
+}
+
+__global__ void bwdif_ushort(unsigned short *dst,
+ cudaTextureObject_t prev,
+ cudaTextureObject_t cur,
+ cudaTextureObject_t next,
+ int dst_width, int dst_height, int dst_pitch,
+ int src_width, int src_height,
+ int parity, int tff, int is_field_end, int clip_max)
+{
+ bwdif_single(dst, prev, cur, next,
+ dst_width, dst_height, dst_pitch,
+ src_width, src_height,
+ parity, tff, is_field_end, clip_max);
+}
+
+__global__ void bwdif_uchar2(uchar2 *dst,
+ cudaTextureObject_t prev,
+ cudaTextureObject_t cur,
+ cudaTextureObject_t next,
+ int dst_width, int dst_height, int dst_pitch,
+ int src_width, int src_height,
+ int parity, int tff, int is_field_end, int clip_max)
+{
+ bwdif_double(dst, prev, cur, next,
+ dst_width, dst_height, dst_pitch,
+ src_width, src_height,
+ parity, tff, is_field_end, clip_max);
+}
+
+__global__ void bwdif_ushort2(ushort2 *dst,
+ cudaTextureObject_t prev,
+ cudaTextureObject_t cur,
+ cudaTextureObject_t next,
+ int dst_width, int dst_height, int dst_pitch,
+ int src_width, int src_height,
+ int parity, int tff, int is_field_end, int clip_max)
+{
+ bwdif_double(dst, prev, cur, next,
+ dst_width, dst_height, dst_pitch,
+ src_width, src_height,
+ parity, tff, is_field_end, clip_max);
+}
+
+} /* extern "C" */
I've been sitting on this for 3 1/2 years now(!), and I finally got around to fixing the loose ends and convincing myself that it was correct. It follows the same basic structure as yadif_cuda, including leaving out the edge handling, to avoid expensive branching. One optimisation vs regular bwidf is leaving out the logic that attempts to prefer the spatial predictor at the end. This is left over from yadif and is not just redundant but also reduces quality. The core bwdif algorithm already has logic for when to prefer the spatial predictor. Thanks to cyanreg for noticing that! Signed-off-by: Philip Langdale <philipl@overt.org> --- configure | 2 + libavfilter/Makefile | 2 + libavfilter/allfilters.c | 1 + libavfilter/vf_bwdif_cuda.c | 379 +++++++++++++++++++++++++++++++++++ libavfilter/vf_bwdif_cuda.cu | 317 +++++++++++++++++++++++++++++ 5 files changed, 701 insertions(+) create mode 100644 libavfilter/vf_bwdif_cuda.c create mode 100644 libavfilter/vf_bwdif_cuda.cu