mirror of
https://github.com/FFmpeg/FFmpeg.git
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78 lines
3.0 KiB
Objective-C
78 lines
3.0 KiB
Objective-C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/log.h"
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#include "utils.h"
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void ff_metal_compute_encoder_dispatch(id<MTLDevice> device,
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id<MTLComputePipelineState> pipeline,
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id<MTLComputeCommandEncoder> encoder,
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NSUInteger width, NSUInteger height)
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{
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[encoder setComputePipelineState:pipeline];
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NSUInteger w = pipeline.threadExecutionWidth;
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NSUInteger h = pipeline.maxTotalThreadsPerThreadgroup / w;
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MTLSize threadsPerThreadgroup = MTLSizeMake(w, h, 1);
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// MAC_OS_X_VERSION_10_15 is only defined on SDKs new enough to include its functionality (including iOS, tvOS, etc)
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#ifdef MAC_OS_X_VERSION_10_15
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if (@available(macOS 10.15, iOS 11, tvOS 14.5, *)) {
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if ([device supportsFamily:MTLGPUFamilyCommon3]) {
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MTLSize threadsPerGrid = MTLSizeMake(width, height, 1);
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[encoder dispatchThreads:threadsPerGrid threadsPerThreadgroup:threadsPerThreadgroup];
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return;
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}
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}
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#endif
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// Fallback path, if we took the above one we already returned so none of this is reached
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{
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MTLSize threadgroups = MTLSizeMake((width + w - 1) / w,
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(height + h - 1) / h,
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1);
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[encoder dispatchThreadgroups:threadgroups threadsPerThreadgroup:threadsPerThreadgroup];
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}
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}
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CVMetalTextureRef ff_metal_texture_from_pixbuf(void *ctx,
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CVMetalTextureCacheRef textureCache,
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CVPixelBufferRef pixbuf,
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int plane,
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MTLPixelFormat format)
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{
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CVMetalTextureRef tex = NULL;
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CVReturn ret;
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ret = CVMetalTextureCacheCreateTextureFromImage(
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NULL,
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textureCache,
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pixbuf,
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NULL,
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format,
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CVPixelBufferGetWidthOfPlane(pixbuf, plane),
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CVPixelBufferGetHeightOfPlane(pixbuf, plane),
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plane,
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&tex
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);
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if (ret != kCVReturnSuccess) {
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av_log(ctx, AV_LOG_ERROR, "Failed to create CVMetalTexture from image: %d\n", ret);
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return NULL;
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}
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return tex;
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}
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