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avfilter: add metal utilities

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Reviewed-by: Ridley Combs <rcombs@rcombs.me>
Signed-off-by: Aman Karmani <aman@tmm1.net>
This commit is contained in:
Aman Karmani 2021-12-16 12:04:07 -08:00
parent edca1fa17c
commit ecee6af8bd
2 changed files with 108 additions and 0 deletions
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35
libavfilter/metal/utils.h Normal file
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/*
* 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
*/
#ifndef AVFILTER_METAL_UTILS_H
#define AVFILTER_METAL_UTILS_H
#include <Metal/Metal.h>
#include <CoreVideo/CoreVideo.h>
void ff_metal_compute_encoder_dispatch(id<MTLDevice> device,
id<MTLComputePipelineState> pipeline,
id<MTLComputeCommandEncoder> encoder,
NSUInteger width, NSUInteger height);
CVMetalTextureRef ff_metal_texture_from_pixbuf(void *avclass,
CVMetalTextureCacheRef textureCache,
CVPixelBufferRef pixbuf,
int plane,
MTLPixelFormat format);
#endif /* AVFILTER_METAL_UTILS_H */

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libavfilter/metal/utils.m Normal file
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/*
* 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/log.h"
#include <libavfilter/metal/utils.h>
void ff_metal_compute_encoder_dispatch(id<MTLDevice> device,
id<MTLComputePipelineState> pipeline,
id<MTLComputeCommandEncoder> encoder,
NSUInteger width, NSUInteger height)
{
[encoder setComputePipelineState:pipeline];
NSUInteger w = pipeline.threadExecutionWidth;
NSUInteger h = pipeline.maxTotalThreadsPerThreadgroup / w;
MTLSize threadsPerThreadgroup = MTLSizeMake(w, h, 1);
BOOL fallback = YES;
if (@available(macOS 10.15, iOS 11, tvOS 14.5, *)) {
if ([device supportsFamily:MTLGPUFamilyCommon3]) {
MTLSize threadsPerGrid = MTLSizeMake(width, height, 1);
[encoder dispatchThreads:threadsPerGrid threadsPerThreadgroup:threadsPerThreadgroup];
fallback = NO;
}
}
if (fallback) {
MTLSize threadgroups = MTLSizeMake((width + w - 1) / w,
(height + h - 1) / h,
1);
[encoder dispatchThreadgroups:threadgroups threadsPerThreadgroup:threadsPerThreadgroup];
}
}
CVMetalTextureRef ff_metal_texture_from_pixbuf(void *ctx,
CVMetalTextureCacheRef textureCache,
CVPixelBufferRef pixbuf,
int plane,
MTLPixelFormat format)
{
CVMetalTextureRef tex = NULL;
CVReturn ret;
ret = CVMetalTextureCacheCreateTextureFromImage(
NULL,
textureCache,
pixbuf,
NULL,
format,
CVPixelBufferGetWidthOfPlane(pixbuf, plane),
CVPixelBufferGetHeightOfPlane(pixbuf, plane),
plane,
&tex
);
if (ret != kCVReturnSuccess) {
av_log(ctx, AV_LOG_ERROR, "Failed to create CVMetalTexture from image: %d\n", ret);
return NULL;
}
return tex;
}