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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 "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);
// MAC_OS_X_VERSION_10_15 is only defined on SDKs new enough to include its functionality (including iOS, tvOS, etc)
#ifdef MAC_OS_X_VERSION_10_15
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];
return;
}
}
#endif
// Fallback path, if we took the above one we already returned so none of this is reached
{
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;
}
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