[FFmpeg-devel] [PATCH v4 5/5] avfilter: add vf_yadif_videotoolbox
Aman Karmani
ffmpeg at tmm1.net
Sat Dec 18 22:02:39 EET 2021
On Fri, Dec 17, 2021 at 1:38 PM Philip Langdale <philipl at overt.org> wrote:
> On Fri, 17 Dec 2021 12:04:18 -0800
> Aman Karmani <ffmpeg at tmm1.net> wrote:
>
> > From: Aman Karmani <aman at tmm1.net>
> >
> > deinterlaces CVPixelBuffers, i.e. AV_PIX_FMT_VIDEOTOOLBOX frames
> >
> > for example, an interlaced mpeg2 video can be decoded by avcodec,
> > uploaded into a CVPixelBuffer, deinterlaced by Metal, and then
> > encoded to h264 by VideoToolbox as follows:
> >
> > ffmpeg \
> > -init_hw_device videotoolbox \
> > -i interlaced.ts \
> > -vf hwupload,yadif_videotoolbox \
> > -c:v h264_videotoolbox \
> > -b:v 2000k \
> > -c:a copy \
> > -y progressive.ts
> >
> > (note that uploading AVFrame into CVPixelBuffer via hwupload
> > requires 504c60660d3194758823ddd45ceddb86e35d806f)
> >
> > this work is sponsored by Fancy Bits LLC
> >
> > Reviewed-by: Ridley Combs <rcombs at rcombs.me>
> > Signed-off-by: Aman Karmani <aman at tmm1.net>
> > ---
> > configure | 1 +
> > libavfilter/Makefile | 4 +
> > libavfilter/allfilters.c | 1 +
> > libavfilter/metal/vf_yadif_videotoolbox.metal | 269 ++++++++++++
> > libavfilter/vf_yadif_videotoolbox.m | 406
> > ++++++++++++++++++ 5 files changed, 681 insertions(+)
> > create mode 100644 libavfilter/metal/vf_yadif_videotoolbox.metal
> > create mode 100644 libavfilter/vf_yadif_videotoolbox.m
> >
> > diff --git a/configure b/configure
> > index 32a39f5f5b..d8b07c8e00 100755
> > --- a/configure
> > +++ b/configure
> > @@ -3748,6 +3748,7 @@ vpp_qsv_filter_select="qsvvpp"
> > xfade_opencl_filter_deps="opencl"
> > yadif_cuda_filter_deps="ffnvcodec"
> > yadif_cuda_filter_deps_any="cuda_nvcc cuda_llvm"
> > +yadif_videotoolbox_filter_deps="metal corevideo videotoolbox"
> >
> > # examples
> > avio_list_dir_deps="avformat avutil"
> > diff --git a/libavfilter/Makefile b/libavfilter/Makefile
> > index 2fe495df28..9a061ba3c8 100644
> > --- a/libavfilter/Makefile
> > +++ b/libavfilter/Makefile
> > @@ -519,6 +519,10 @@ OBJS-$(CONFIG_XSTACK_FILTER) +=
> > vf_stack.o framesync.o OBJS-$(CONFIG_YADIF_FILTER)
> > += vf_yadif.o yadif_common.o OBJS-$(CONFIG_YADIF_CUDA_FILTER)
> > += vf_yadif_cuda.o vf_yadif_cuda.ptx.o \ yadif_common.o
> > cuda/load_helper.o +OBJS-$(CONFIG_YADIF_VIDEOTOOLBOX_FILTER) +=
> > vf_yadif_videotoolbox.o \
> > +
> > metal/vf_yadif_videotoolbox.metallib.o \
> > + metal/utils.o \
> > + yadif_common.o
> > OBJS-$(CONFIG_YAEPBLUR_FILTER) += vf_yaepblur.o
> > OBJS-$(CONFIG_ZMQ_FILTER) += f_zmq.o
> > OBJS-$(CONFIG_ZOOMPAN_FILTER) += vf_zoompan.o
> > diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
> > index ec57a2c49c..26f1c73505 100644
> > --- a/libavfilter/allfilters.c
> > +++ b/libavfilter/allfilters.c
> > @@ -496,6 +496,7 @@ extern const AVFilter ff_vf_xmedian;
> > extern const AVFilter ff_vf_xstack;
> > extern const AVFilter ff_vf_yadif;
> > extern const AVFilter ff_vf_yadif_cuda;
> > +extern const AVFilter ff_vf_yadif_videotoolbox;
> > extern const AVFilter ff_vf_yaepblur;
> > extern const AVFilter ff_vf_zmq;
> > extern const AVFilter ff_vf_zoompan;
> > diff --git a/libavfilter/metal/vf_yadif_videotoolbox.metal
> > b/libavfilter/metal/vf_yadif_videotoolbox.metal new file mode 100644
> > index 0000000000..50783f2ffe
> > --- /dev/null
> > +++ b/libavfilter/metal/vf_yadif_videotoolbox.metal
> > @@ -0,0 +1,269 @@
> > +/*
> > + * Copyright (C) 2018 Philip Langdale <philipl at overt.org>
> > + * 2020 Aman Karmani <aman at tmm1.net>
> > + * 2020 Stefan Dyulgerov <stefan.dyulgerov at gmail.com>
> > + *
> > + * 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 <metal_stdlib>
> > +#include <metal_integer>
> > +#include <metal_texture>
> > +
> > +using namespace metal;
> > +
> > +/*
> > + * Parameters
> > + */
> > +
> > +struct deintParams {
> > + uint channels;
> > + uint parity;
> > + uint tff;
> > + bool is_second_field;
> > + bool skip_spatial_check;
> > + int field_mode;
> > +};
> > +
> > +/*
> > + * Texture access helpers
> > + */
> > +
> > +#define accesstype access::sample
> > +const sampler s(coord::pixel);
> > +
> > +template <typename T>
> > +T tex2D(texture2d<float, access::sample> tex, uint x, uint y)
> > +{
> > + return tex.sample(s, float2(x, y)).x;
> > +}
> > +
> > +template <>
> > +float2 tex2D<float2>(texture2d<float, access::sample> tex, uint x,
> > uint y) +{
> > + return tex.sample(s, float2(x, y)).xy;
> > +}
> > +
> > +template <typename T>
> > +T tex2D(texture2d<float, access::read> tex, uint x, uint y)
> > +{
> > + return tex.read(uint2(x, y)).x;
> > +}
> > +
> > +template <>
> > +float2 tex2D<float2>(texture2d<float, access::read> tex, uint x,
> > uint y) +{
> > + return tex.read(uint2(x, y)).xy;
> > +}
> > +
> > +/*
> > + * YADIF helpers
> > + */
> > +
> > +template<typename T>
> > +T spatial_predictor(T a, T b, T c, T d, T e, T f, T g,
> > + T h, T i, T j, T k, T l, T m, T n)
> > +{
> > + T spatial_pred = (d + k)/2;
> > + T spatial_score = abs(c - j) + abs(d - k) + abs(e - l);
> > +
> > + T score = abs(b - k) + abs(c - l) + abs(d - m);
> > + if (score < spatial_score) {
> > + spatial_pred = (c + l)/2;
> > + spatial_score = score;
> > + score = abs(a - l) + abs(b - m) + abs(c - n);
> > + if (score < spatial_score) {
> > + spatial_pred = (b + m)/2;
> > + spatial_score = score;
> > + }
> > + }
> > + score = abs(d - i) + abs(e - j) + abs(f - k);
> > + if (score < spatial_score) {
> > + spatial_pred = (e + j)/2;
> > + spatial_score = score;
> > + score = abs(e - h) + abs(f - i) + abs(g - j);
> > + if (score < spatial_score) {
> > + spatial_pred = (f + i)/2;
> > + spatial_score = score;
> > + }
> > + }
> > + return spatial_pred;
> > +}
> > +
> > +template<typename T>
> > +T temporal_predictor(T A, T B, T C, T D, T E, T F,
> > + T G, T H, T I, T J, T K, T L,
> > + T spatial_pred, bool skip_check)
> > +{
> > + T p0 = (C + H) / 2;
> > + T p1 = F;
> > + T p2 = (D + I) / 2;
> > + T p3 = G;
> > + T p4 = (E + J) / 2;
> > +
> > + T tdiff0 = abs(D - I);
> > + T tdiff1 = (abs(A - F) + abs(B - G)) / 2;
> > + T tdiff2 = (abs(K - F) + abs(G - L)) / 2;
> > +
> > + T diff = max3(tdiff0, tdiff1, tdiff2);
> > +
> > + if (!skip_check) {
> > + T maxi = max3(p2 - p3, p2 - p1, min(p0 - p1, p4 - p3));
> > + T mini = min3(p2 - p3, p2 - p1, max(p0 - p1, p4 - p3));
> > + diff = max3(diff, mini, -maxi);
> > + }
> > +
> > + return clamp(spatial_pred, p2 - diff, p2 + diff);
> > +}
> > +
> > +#define T float2
> > +template <>
> > +T spatial_predictor<T>(T a, T b, T c, T d, T e, T f, T g,
> > + T h, T i, T j, T k, T l, T m, T n)
> > +{
> > + return T(
> > + spatial_predictor(a.x, b.x, c.x, d.x, e.x, f.x, g.x,
> > + h.x, i.x, j.x, k.x, l.x, m.x, n.x),
> > + spatial_predictor(a.y, b.y, c.y, d.y, e.y, f.y, g.y,
> > + h.y, i.y, j.y, k.y, l.y, m.y, n.y)
> > + );
> > +}
> > +
> > +template <>
> > +T temporal_predictor<T>(T A, T B, T C, T D, T E, T F,
> > + T G, T H, T I, T J, T K, T L,
> > + T spatial_pred, bool skip_check)
> > +{
> > + return T(
> > + temporal_predictor(A.x, B.x, C.x, D.x, E.x, F.x,
> > + G.x, H.x, I.x, J.x, K.x, L.x,
> > + spatial_pred.x, skip_check),
> > + temporal_predictor(A.y, B.y, C.y, D.y, E.y, F.y,
> > + G.y, H.y, I.y, J.y, K.y, L.y,
> > + spatial_pred.y, skip_check)
> > + );
> > +}
> > +#undef T
> > +
> > +/*
> > + * YADIF compute
> > + */
> > +
> > +template <typename T>
> > +T yadif_compute_spatial(
> > + texture2d<float, accesstype> cur,
> > + uint2 pos)
> > +{
> > + // Calculate spatial prediction
> > + T a = tex2D<T>(cur, pos.x - 3, pos.y - 1);
> > + T b = tex2D<T>(cur, pos.x - 2, pos.y - 1);
> > + T c = tex2D<T>(cur, pos.x - 1, pos.y - 1);
> > + T d = tex2D<T>(cur, pos.x - 0, pos.y - 1);
> > + T e = tex2D<T>(cur, pos.x + 1, pos.y - 1);
> > + T f = tex2D<T>(cur, pos.x + 2, pos.y - 1);
> > + T g = tex2D<T>(cur, pos.x + 3, pos.y - 1);
> > +
> > + T h = tex2D<T>(cur, pos.x - 3, pos.y + 1);
> > + T i = tex2D<T>(cur, pos.x - 2, pos.y + 1);
> > + T j = tex2D<T>(cur, pos.x - 1, pos.y + 1);
> > + T k = tex2D<T>(cur, pos.x - 0, pos.y + 1);
> > + T l = tex2D<T>(cur, pos.x + 1, pos.y + 1);
> > + T m = tex2D<T>(cur, pos.x + 2, pos.y + 1);
> > + T n = tex2D<T>(cur, pos.x + 3, pos.y + 1);
> > +
> > + return spatial_predictor(a, b, c, d, e, f, g,
> > + h, i, j, k, l, m, n);
> > +}
> > +
> > +template <typename T>
> > +T yadif_compute_temporal(
> > + texture2d<float, accesstype> cur,
> > + texture2d<float, accesstype> prev2,
> > + texture2d<float, accesstype> prev1,
> > + texture2d<float, accesstype> next1,
> > + texture2d<float, accesstype> next2,
> > + T spatial_pred,
> > + bool skip_spatial_check,
> > + uint2 pos)
> > +{
> > + // Calculate temporal prediction
> > + T A = tex2D<T>(prev2, pos.x, pos.y - 1);
> > + T B = tex2D<T>(prev2, pos.x, pos.y + 1);
> > + T C = tex2D<T>(prev1, pos.x, pos.y - 2);
> > + T D = tex2D<T>(prev1, pos.x, pos.y + 0);
> > + T E = tex2D<T>(prev1, pos.x, pos.y + 2);
> > + T F = tex2D<T>(cur, pos.x, pos.y - 1);
> > + T G = tex2D<T>(cur, pos.x, pos.y + 1);
> > + T H = tex2D<T>(next1, pos.x, pos.y - 2);
> > + T I = tex2D<T>(next1, pos.x, pos.y + 0);
> > + T J = tex2D<T>(next1, pos.x, pos.y + 2);
> > + T K = tex2D<T>(next2, pos.x, pos.y - 1);
> > + T L = tex2D<T>(next2, pos.x, pos.y + 1);
> > +
> > + return temporal_predictor(A, B, C, D, E, F, G, H, I, J, K, L,
> > + spatial_pred, skip_spatial_check);
> > +}
> > +
> > +template <typename T>
> > +T yadif(
> > + texture2d<float, access::write> dst,
> > + texture2d<float, accesstype> prev,
> > + texture2d<float, accesstype> cur,
> > + texture2d<float, accesstype> next,
> > + constant deintParams& params,
> > + uint2 pos)
> > +{
> > + T spatial_pred = yadif_compute_spatial<T>(cur, pos);
> > +
> > + if (params.is_second_field) {
> > + return yadif_compute_temporal(cur, prev, cur, next, next,
> > spatial_pred, params.skip_spatial_check, pos);
> > + } else {
> > + return yadif_compute_temporal(cur, prev, prev, cur, next,
> > spatial_pred, params.skip_spatial_check, pos);
> > + }
> > +}
> > +
> > +/*
> > + * Kernel dispatch
> > + */
> > +
> > +kernel void deint(
> > + texture2d<float, access::write> dst [[texture(0)]],
> > + texture2d<float, accesstype> prev [[texture(1)]],
> > + texture2d<float, accesstype> cur [[texture(2)]],
> > + texture2d<float, accesstype> next [[texture(3)]],
> > + constant deintParams& params [[buffer(4)]],
> > + uint2 pos [[thread_position_in_grid]])
> > +{
> > + if ((pos.x >= dst.get_width()) ||
> > + (pos.y >= dst.get_height())) {
> > + return;
> > + }
> > +
> > + // Don't modify the primary field
> > + if (pos.y % 2 == params.parity) {
> > + float4 in = cur.read(pos);
> > + dst.write(in, pos);
> > + return;
> > + }
> > +
> > + float2 pred;
> > + if (params.channels == 1)
> > + pred = float2(yadif<float>(dst, prev, cur, next, params,
> > pos));
> > + else
> > + pred = yadif<float2>(dst, prev, cur, next, params, pos);
> > + dst.write(pred.xyyy, pos);
> > +}
> > diff --git a/libavfilter/vf_yadif_videotoolbox.m
> > b/libavfilter/vf_yadif_videotoolbox.m new file mode 100644
> > index 0000000000..af83a73e89
> > --- /dev/null
> > +++ b/libavfilter/vf_yadif_videotoolbox.m
> > @@ -0,0 +1,406 @@
> > +/*
> > + * Copyright (C) 2018 Philip Langdale <philipl at overt.org>
> > + * 2020 Aman Karmani <aman at tmm1.net>
> > + *
> > + * 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 "internal.h"
> > +#include "yadif.h"
> > +#include <libavutil/avassert.h>
> > +#include <libavutil/hwcontext.h>
> > +#include <libavutil/objc.h>
> > +#include <libavfilter/metal/utils.h>
> > +
> > +extern char ff_vf_yadif_videotoolbox_metallib_data[];
> > +extern unsigned int ff_vf_yadif_videotoolbox_metallib_len;
> > +
> > +typedef struct YADIFVTContext {
> > + YADIFContext yadif;
> > +
> > + AVBufferRef *device_ref;
> > + AVBufferRef *input_frames_ref;
> > + AVHWFramesContext *input_frames;
> > +
> > + id<MTLDevice> mtlDevice;
> > + id<MTLLibrary> mtlLibrary;
> > + id<MTLCommandQueue> mtlQueue;
> > + id<MTLComputePipelineState> mtlPipeline;
> > + id<MTLFunction> mtlFunction;
> > + id<MTLBuffer> mtlParamsBuffer;
> > +
> > + CVMetalTextureCacheRef textureCache;
> > +} YADIFVTContext;
> > +
> > +struct mtlYadifParams {
> > + uint channels;
> > + uint parity;
> > + uint tff;
> > + bool is_second_field;
> > + bool skip_spatial_check;
> > + int field_mode;
> > +};
> > +
> > +static void call_kernel(AVFilterContext *ctx,
> > + id<MTLTexture> dst,
> > + id<MTLTexture> prev,
> > + id<MTLTexture> cur,
> > + id<MTLTexture> next,
> > + int channels,
> > + int parity,
> > + int tff)
> > +{
> > + YADIFVTContext *s = ctx->priv;
> > + id<MTLCommandBuffer> buffer = s->mtlQueue.commandBuffer;
> > + id<MTLComputeCommandEncoder> encoder =
> > buffer.computeCommandEncoder;
> > + struct mtlYadifParams *params = (struct mtlYadifParams
> > *)s->mtlParamsBuffer.contents;
> > + *params = (struct mtlYadifParams){
> > + .channels = channels,
> > + .parity = parity,
> > + .tff = tff,
> > + .is_second_field = !(parity ^ tff),
> > + .skip_spatial_check = s->yadif.mode&2,
> > + .field_mode = s->yadif.current_field
> > + };
> > +
> > + [encoder setTexture:dst atIndex:0];
> > + [encoder setTexture:prev atIndex:1];
> > + [encoder setTexture:cur atIndex:2];
> > + [encoder setTexture:next atIndex:3];
> > + [encoder setBuffer:s->mtlParamsBuffer offset:0 atIndex:4];
> > + ff_metal_compute_encoder_dispatch(s->mtlDevice, s->mtlPipeline,
> > encoder, dst.width, dst.height);
> > + [encoder endEncoding];
> > +
> > + [buffer commit];
> > + [buffer waitUntilCompleted];
> > +
> > + ff_objc_release(&encoder);
> > + ff_objc_release(&buffer);
> > +}
> > +
> > +static void filter(AVFilterContext *ctx, AVFrame *dst,
> > + int parity, int tff)
> > +{
> > + YADIFVTContext *s = ctx->priv;
> > + YADIFContext *y = &s->yadif;
> > + int i;
> > +
> > + for (i = 0; i < y->csp->nb_components; i++) {
> > + int pixel_size, channels;
> > + const AVComponentDescriptor *comp = &y->csp->comp[i];
> > + CVMetalTextureRef prev, cur, next, dest;
> > + id<MTLTexture> tex_prev, tex_cur, tex_next, tex_dest;
> > + MTLPixelFormat format;
> > +
> > + 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:
> > + format = channels == 1 ? MTLPixelFormatR8Unorm :
> > MTLPixelFormatRG8Unorm;
> > + break;
> > + case 2:
> > + format = channels == 1 ? MTLPixelFormatR16Unorm :
> > MTLPixelFormatRG16Unorm;
> > + break;
> > + default:
> > + av_log(ctx, AV_LOG_ERROR, "Unsupported pixel format:
> > %s\n", y->csp->name);
> > + goto exit;
> > + }
> > + av_log(ctx, AV_LOG_TRACE,
> > + "Deinterlacing plane %d: pixel_size: %d channels:
> > %d\n",
> > + comp->plane, pixel_size, channels);
> > +
> > + prev = ff_metal_texture_from_pixbuf(ctx, s->textureCache,
> > (CVPixelBufferRef)y->prev->data[3], i, format);
> > + cur = ff_metal_texture_from_pixbuf(ctx, s->textureCache,
> > (CVPixelBufferRef)y->cur->data[3], i, format);
> > + next = ff_metal_texture_from_pixbuf(ctx, s->textureCache,
> > (CVPixelBufferRef)y->next->data[3], i, format);
> > + dest = ff_metal_texture_from_pixbuf(ctx, s->textureCache,
> > (CVPixelBufferRef)dst->data[3], i, format); +
> > + tex_prev = CVMetalTextureGetTexture(prev);
> > + tex_cur = CVMetalTextureGetTexture(cur);
> > + tex_next = CVMetalTextureGetTexture(next);
> > + tex_dest = CVMetalTextureGetTexture(dest);
> > +
> > + call_kernel(ctx, tex_dest, tex_prev, tex_cur, tex_next,
> > + channels, parity, tff);
> > +
> > + CFRelease(prev);
> > + CFRelease(cur);
> > + CFRelease(next);
> > + CFRelease(dest);
> > + }
> > +
> > + CVBufferPropagateAttachments((CVPixelBufferRef)y->cur->data[3],
> > (CVPixelBufferRef)dst->data[3]); +
> > + if (y->current_field == YADIF_FIELD_END) {
> > + y->current_field = YADIF_FIELD_NORMAL;
> > + }
> > +
> > +exit:
> > + return;
> > +}
> > +
> > +static av_cold void yadif_videotoolbox_uninit(AVFilterContext *ctx)
> > +{
> > + YADIFVTContext *s = ctx->priv;
> > + YADIFContext *y = &s->yadif;
> > +
> > + av_frame_free(&y->prev);
> > + av_frame_free(&y->cur);
> > + av_frame_free(&y->next);
> > +
> > + av_buffer_unref(&s->device_ref);
> > + av_buffer_unref(&s->input_frames_ref);
> > + s->input_frames = NULL;
> > +
> > + ff_objc_release(&s->mtlParamsBuffer);
> > + ff_objc_release(&s->mtlFunction);
> > + ff_objc_release(&s->mtlPipeline);
> > + ff_objc_release(&s->mtlQueue);
> > + ff_objc_release(&s->mtlLibrary);
> > + ff_objc_release(&s->mtlDevice);
> > +
> > + if (s->textureCache) {
> > + CFRelease(s->textureCache);
> > + s->textureCache = NULL;
> > + }
> > +}
> > +
> > +static av_cold int yadif_videotoolbox_init(AVFilterContext *ctx)
> > +{
> > + YADIFVTContext *s = ctx->priv;
> > + NSError *err = nil;
> > + CVReturn ret;
> > +
> > + s->mtlDevice = MTLCreateSystemDefaultDevice();
> > + if (!s->mtlDevice) {
> > + av_log(ctx, AV_LOG_ERROR, "Unable to find Metal device\n");
> > + goto fail;
> > + }
> > +
> > + av_log(ctx, AV_LOG_INFO, "Using Metal device: %s\n",
> > s->mtlDevice.name.UTF8String); +
> > + dispatch_data_t libData = dispatch_data_create(
> > + ff_vf_yadif_videotoolbox_metallib_data,
> > + ff_vf_yadif_videotoolbox_metallib_len,
> > + nil,
> > + nil);
> > + s->mtlLibrary = [s->mtlDevice newLibraryWithData:libData
> > error:&err];
> > + dispatch_release(libData);
> > + libData = nil;
> > + if (err) {
> > + av_log(ctx, AV_LOG_ERROR, "Failed to load Metal library:
> > %s\n", err.description.UTF8String);
> > + goto fail;
> > + }
> > +
> > + s->mtlFunction = [s->mtlLibrary newFunctionWithName:@"deint"];
> > + if (!s->mtlFunction) {
> > + av_log(ctx, AV_LOG_ERROR, "Failed to create Metal
> > function!\n");
> > + goto fail;
> > + }
> > +
> > + s->mtlQueue = s->mtlDevice.newCommandQueue;
> > + if (!s->mtlQueue) {
> > + av_log(ctx, AV_LOG_ERROR, "Failed to create Metal command
> > queue!\n");
> > + goto fail;
> > + }
> > +
> > + s->mtlPipeline = [s->mtlDevice
> > + newComputePipelineStateWithFunction:s->mtlFunction
> > + error:&err];
> > + if (err) {
> > + av_log(ctx, AV_LOG_ERROR, "Failed to create Metal compute
> > pipeline: %s\n", err.description.UTF8String);
> > + goto fail;
> > + }
> > +
> > + s->mtlParamsBuffer = [s->mtlDevice
> > + newBufferWithLength:sizeof(struct mtlYadifParams)
> > + options:MTLResourceStorageModeShared];
> > + if (!s->mtlParamsBuffer) {
> > + av_log(ctx, AV_LOG_ERROR, "Failed to create Metal buffer for
> > parameters\n");
> > + goto fail;
> > + }
> > +
> > + ret = CVMetalTextureCacheCreate(
> > + NULL,
> > + NULL,
> > + s->mtlDevice,
> > + NULL,
> > + &s->textureCache
> > + );
> > + if (ret != kCVReturnSuccess) {
> > + av_log(ctx, AV_LOG_ERROR, "Failed to create
> > CVMetalTextureCache: %d\n", ret);
> > + goto fail;
> > + }
> > +
> > + return 0;
> > +fail:
> > + yadif_videotoolbox_uninit(ctx);
> > + return AVERROR_EXTERNAL;
> > +}
> > +
> > +static int config_input(AVFilterLink *inlink)
> > +{
> > + AVFilterContext *ctx = inlink->dst;
> > + YADIFVTContext *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;
> > + YADIFVTContext *s = ctx->priv;
> > + YADIFContext *y = &s->yadif;
> > + int ret = 0;
> > +
> > + 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);
> > + }
> > +
> > + 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_VIDEOTOOLBOX;
> > + output_frames->sw_format = s->input_frames->sw_format;
> > + output_frames->width = ctx->inputs[0]->w;
> > + output_frames->height = ctx->inputs[0]->h;
> > +
> > + 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 VideoToolbox
> > frame "
> > + "context for output: %d\n", ret);
> > + goto exit;
> > + }
> > +
> > + link->time_base.num = ctx->inputs[0]->time_base.num;
> > + link->time_base.den = ctx->inputs[0]->time_base.den * 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;
> > +
> > +exit:
> > + return ret;
> > +}
> > +
> > +#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
> > +#define CONST(name, help, val, unit) { name, help, 0,
> > AV_OPT_TYPE_CONST, {.i64=val}, INT_MIN, INT_MAX, FLAGS, unit } +
> > +static const AVOption yadif_videotoolbox_options[] = {
> > + #define OFFSET(x) offsetof(YADIFContext, x)
> > + { "mode", "specify the interlacing mode", OFFSET(mode),
> > AV_OPT_TYPE_INT, {.i64=YADIF_MODE_SEND_FRAME}, 0, 3, FLAGS, "mode"},
> > + CONST("send_frame", "send one frame for each frame",
> > YADIF_MODE_SEND_FRAME,
> > "mode"),
> > + CONST("send_field", "send one frame for each field",
> > YADIF_MODE_SEND_FIELD,
> > "mode"),
> > + CONST("send_frame_nospatial", "send one frame for each frame,
> > but skip spatial interlacing check", YADIF_MODE_SEND_FRAME_NOSPATIAL,
> > "mode"),
> > + CONST("send_field_nospatial", "send one frame for each field,
> > but skip spatial interlacing check", YADIF_MODE_SEND_FIELD_NOSPATIAL,
> > "mode"), +
> > + { "parity", "specify the assumed picture field parity",
> > OFFSET(parity), AV_OPT_TYPE_INT, {.i64=YADIF_PARITY_AUTO}, -1, 1,
> > FLAGS, "parity" },
> > + CONST("tff", "assume top field first", YADIF_PARITY_TFF,
> > "parity"),
> > + CONST("bff", "assume bottom field first", YADIF_PARITY_BFF,
> > "parity"),
> > + CONST("auto", "auto detect parity", YADIF_PARITY_AUTO,
> > "parity"), +
> > + { "deint", "specify which frames to deinterlace", OFFSET(deint),
> > AV_OPT_TYPE_INT, {.i64=YADIF_DEINT_ALL}, 0, 1, FLAGS, "deint" },
> > + CONST("all", "deinterlace all frames",
> > YADIF_DEINT_ALL, "deint"),
> > + CONST("interlaced", "only deinterlace frames marked as
> > interlaced", YADIF_DEINT_INTERLACED, "deint"),
> > + #undef OFFSET
> > +
> > + { NULL }
> > +};
> > +
> > +AVFILTER_DEFINE_CLASS(yadif_videotoolbox);
> > +
> > +static const AVFilterPad yadif_videotoolbox_inputs[] = {
> > + {
> > + .name = "default",
> > + .type = AVMEDIA_TYPE_VIDEO,
> > + .filter_frame = ff_yadif_filter_frame,
> > + .config_props = config_input,
> > + },
> > +};
> > +
> > +static const AVFilterPad yadif_videotoolbox_outputs[] = {
> > + {
> > + .name = "default",
> > + .type = AVMEDIA_TYPE_VIDEO,
> > + .request_frame = ff_yadif_request_frame,
> > + .config_props = config_output,
> > + },
> > +};
> > +
> > +AVFilter ff_vf_yadif_videotoolbox = {
> > + .name = "yadif_videotoolbox",
> > + .description = NULL_IF_CONFIG_SMALL("YADIF for VideoToolbox
> > frames using Metal compute"),
> > + .priv_size = sizeof(YADIFVTContext),
> > + .priv_class = &yadif_videotoolbox_class,
> > + .init = yadif_videotoolbox_init,
> > + .uninit = yadif_videotoolbox_uninit,
> > + FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VIDEOTOOLBOX),
> > + FILTER_INPUTS(yadif_videotoolbox_inputs),
> > + FILTER_OUTPUTS(yadif_videotoolbox_outputs),
> > + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
> > + .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
> > +};
>
> LGTM for the general part. I'll take your work that the metal specific
> parts work as intended.
>
Patchset applied. Thanks to everyone who helped review on and off-list.
>
> --phil
>
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