From 73a2252f1d9062fa877ef153532bc35351dafab6 Mon Sep 17 00:00:00 2001 From: Philip Langdale Date: Thu, 29 Aug 2019 21:43:29 -0700 Subject: [PATCH] avfilter/vf_bwdif_cuda: CUDA accelerated bwdif deinterlacer 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. --- Changelog | 1 + configure | 2 + doc/filters.texi | 52 +++++ libavcodec/version.h | 2 +- libavfilter/Makefile | 2 + libavfilter/allfilters.c | 1 + libavfilter/vf_bwdif_cuda.c | 375 +++++++++++++++++++++++++++++++++++ libavfilter/vf_bwdif_cuda.cu | 309 +++++++++++++++++++++++++++++ 8 files changed, 743 insertions(+), 1 deletion(-) create mode 100644 libavfilter/vf_bwdif_cuda.c create mode 100644 libavfilter/vf_bwdif_cuda.cu diff --git a/Changelog b/Changelog index ac3247982b..fb47d2652b 100644 --- a/Changelog +++ b/Changelog @@ -19,6 +19,7 @@ version : - vMix video decoder - Essential Video Coding parser, muxer and demuxer - Essential Video Coding frame merge bsf +- bwdif_cuda filter version 6.0: - Radiance HDR image support diff --git a/configure b/configure index c9a86e9f8e..0c77d8e1fe 100755 --- a/configure +++ b/configure @@ -3697,6 +3697,8 @@ 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" bwdif_vulkan_filter_deps="vulkan spirv_compiler" chromaber_vulkan_filter_deps="vulkan spirv_compiler" color_vulkan_filter_deps="vulkan spirv_compiler" diff --git a/doc/filters.texi b/doc/filters.texi index a46357bfd8..a8217b0755 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -9145,6 +9145,58 @@ Only deinterlace frames marked as interlaced. The default value is @code{all}. @end table +@section bwdif_cuda + +Deinterlace the input video using the @ref{bwdif} algorithm, but implemented +in CUDA so that it can work as part of a GPU accelerated pipeline with nvdec +and/or nvenc. + +It accepts the following parameters: + +@table @option +@item mode +The interlacing mode to adopt. It accepts one of the following values: + +@table @option +@item 0, send_frame +Output one frame for each frame. +@item 1, send_field +Output one frame for each field. +@end table + +The default value is @code{send_field}. + +@item parity +The picture field parity assumed for the input interlaced video. It accepts one +of the following values: + +@table @option +@item 0, tff +Assume the top field is first. +@item 1, bff +Assume the bottom field is first. +@item -1, auto +Enable automatic detection of field parity. +@end table + +The default value is @code{auto}. +If the interlacing is unknown or the decoder does not export this information, +top field first will be assumed. + +@item deint +Specify which frames to deinterlace. Accepts one of the following +values: + +@table @option +@item 0, all +Deinterlace all frames. +@item 1, interlaced +Only deinterlace frames marked as interlaced. +@end table + +The default value is @code{all}. +@end table + @section ccrepack Repack CEA-708 closed captioning side data diff --git a/libavcodec/version.h b/libavcodec/version.h index 4b7ec515fe..d0980e28de 100644 --- a/libavcodec/version.h +++ b/libavcodec/version.h @@ -29,7 +29,7 @@ #include "version_major.h" -#define LIBAVCODEC_VERSION_MINOR 19 +#define LIBAVCODEC_VERSION_MINOR 20 #define LIBAVCODEC_VERSION_MICRO 100 #define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \ diff --git a/libavfilter/Makefile b/libavfilter/Makefile index ff149a3733..9b7813575a 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -213,6 +213,8 @@ 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-$(CONFIG_BWDIF_VULKAN_FILTER) += vf_bwdif_vulkan.o yadif_common.o vulkan.o vulkan_filter.o OBJS-$(CONFIG_CAS_FILTER) += vf_cas.o OBJS-$(CONFIG_CCREPACK_FILTER) += vf_ccrepack.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 6593e4eb83..9a7fadc58d 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -197,6 +197,7 @@ 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_bwdif_vulkan; extern const AVFilter ff_vf_cas; extern const AVFilter ff_vf_ccrepack; diff --git a/libavfilter/vf_bwdif_cuda.c b/libavfilter/vf_bwdif_cuda.c new file mode 100644 index 0000000000..a5ecfbadb6 --- /dev/null +++ b/libavfilter/vf_bwdif_cuda.c @@ -0,0 +1,375 @@ +/* + * Copyright (C) 2019 Philip Langdale + * + * 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; + + 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->hwctx->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->hwctx->cuda_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->hwctx->cuda_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; + 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->hwctx->cuda_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, +}; diff --git a/libavfilter/vf_bwdif_cuda.cu b/libavfilter/vf_bwdif_cuda.cu new file mode 100644 index 0000000000..3d4c29d8c3 --- /dev/null +++ b/libavfilter/vf_bwdif_cuda.cu @@ -0,0 +1,309 @@ +/* + * Copyright (C) 2019 Philip Langdale + * + * 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 +__inline__ __device__ T max3(T a, T b, T c) +{ + T x = max(a, b); + return max(x, c); +} + +template +__inline__ __device__ T min3(T a, T b, T c) +{ + T x = min(a, b); + return min(x, c); +} + +template +__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 +__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 +__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; + } + + if (interpol > d + diff) { + interpol = d + diff; + } else if (interpol < d - diff) { + interpol = d - diff; + } + final = clip(interpol, 0, clip_max); + } + + return final; +} + +template +__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(cur, xo, yo); + return; + } + + T cur_prefs3 = tex2D(cur, xo, yo + 3); + T cur_prefs = tex2D(cur, xo, yo + 1); + T cur_mrefs = tex2D(cur, xo, yo - 1); + T cur_mrefs3 = tex2D(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(prev2, xo, yo + 4); + T prev2_prefs2 = tex2D(prev2, xo, yo + 2); + T prev2_0 = tex2D(prev2, xo, yo + 0); + T prev2_mrefs2 = tex2D(prev2, xo, yo - 2); + T prev2_mrefs4 = tex2D(prev2, xo, yo - 4); + T prev_prefs = tex2D(prev1, xo, yo + 1); + T prev_mrefs = tex2D(prev1, xo, yo - 1); + T next_prefs = tex2D(next1, xo, yo + 1); + T next_mrefs = tex2D(next1, xo, yo - 1); + T next2_prefs4 = tex2D(next2, xo, yo + 4); + T next2_prefs2 = tex2D(next2, xo, yo + 2); + T next2_0 = tex2D(next2, xo, yo + 0); + T next2_mrefs2 = tex2D(next2, xo, yo - 2); + T next2_mrefs4 = tex2D(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 +__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(cur, xo, yo); + return; + } + + T cur_prefs3 = tex2D(cur, xo, yo + 3); + T cur_prefs = tex2D(cur, xo, yo + 1); + T cur_mrefs = tex2D(cur, xo, yo - 1); + T cur_mrefs3 = tex2D(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(prev2, xo, yo + 4); + T prev2_prefs2 = tex2D(prev2, xo, yo + 2); + T prev2_0 = tex2D(prev2, xo, yo + 0); + T prev2_mrefs2 = tex2D(prev2, xo, yo - 2); + T prev2_mrefs4 = tex2D(prev2, xo, yo - 4); + T prev_prefs = tex2D(prev1, xo, yo + 1); + T prev_mrefs = tex2D(prev1, xo, yo - 1); + T next_prefs = tex2D(next1, xo, yo + 1); + T next_mrefs = tex2D(next1, xo, yo - 1); + T next2_prefs4 = tex2D(next2, xo, yo + 4); + T next2_prefs2 = tex2D(next2, xo, yo + 2); + T next2_0 = tex2D(next2, xo, yo + 0); + T next2_mrefs2 = tex2D(next2, xo, yo - 2); + T next2_mrefs4 = tex2D(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" */