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| 1 | +/* |
| 2 | + * This file is part of FFmpeg. |
| 3 | + * |
| 4 | + * FFmpeg is free software; you can redistribute it and/or |
| 5 | + * modify it under the terms of the GNU Lesser General Public |
| 6 | + * License as published by the Free Software Foundation; either |
| 7 | + * version 2.1 of the License, or (at your option) any later version. |
| 8 | + * |
| 9 | + * FFmpeg is distributed in the hope that it will be useful, |
| 10 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | + * Lesser General Public License for more details. |
| 13 | + * |
| 14 | + * You should have received a copy of the GNU Lesser General Public |
| 15 | + * License along with FFmpeg; if not, write to the Free Software |
| 16 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | + */ |
| 18 | + |
| 19 | +#include "libavutil/log.h" |
| 20 | +#include <libavfilter/metal/utils.h> |
| 21 | + |
| 22 | +void ff_metal_compute_encoder_dispatch(id<MTLDevice> device, |
| 23 | + id<MTLComputePipelineState> pipeline, |
| 24 | + id<MTLComputeCommandEncoder> encoder, |
| 25 | + NSUInteger width, NSUInteger height) |
| 26 | +{ |
| 27 | + [encoder setComputePipelineState:pipeline]; |
| 28 | + NSUInteger w = pipeline.threadExecutionWidth; |
| 29 | + NSUInteger h = pipeline.maxTotalThreadsPerThreadgroup / w; |
| 30 | + MTLSize threadsPerThreadgroup = MTLSizeMake(w, h, 1); |
| 31 | + BOOL fallback = YES; |
| 32 | + if (@available(macOS 10.15, iOS 11, tvOS 14.5, *)) { |
| 33 | + if ([device supportsFamily:MTLGPUFamilyCommon3]) { |
| 34 | + MTLSize threadsPerGrid = MTLSizeMake(width, height, 1); |
| 35 | + [encoder dispatchThreads:threadsPerGrid threadsPerThreadgroup:threadsPerThreadgroup]; |
| 36 | + fallback = NO; |
| 37 | + } |
| 38 | + } |
| 39 | + if (fallback) { |
| 40 | + MTLSize threadgroups = MTLSizeMake((width + w - 1) / w, |
| 41 | + (height + h - 1) / h, |
| 42 | + 1); |
| 43 | + [encoder dispatchThreadgroups:threadgroups threadsPerThreadgroup:threadsPerThreadgroup]; |
| 44 | + } |
| 45 | +} |
| 46 | + |
| 47 | +CVMetalTextureRef ff_metal_texture_from_pixbuf(void *ctx, |
| 48 | + CVMetalTextureCacheRef textureCache, |
| 49 | + CVPixelBufferRef pixbuf, |
| 50 | + int plane, |
| 51 | + MTLPixelFormat format) |
| 52 | +{ |
| 53 | + CVMetalTextureRef tex = NULL; |
| 54 | + CVReturn ret; |
| 55 | + |
| 56 | + ret = CVMetalTextureCacheCreateTextureFromImage( |
| 57 | + NULL, |
| 58 | + textureCache, |
| 59 | + pixbuf, |
| 60 | + NULL, |
| 61 | + format, |
| 62 | + CVPixelBufferGetWidthOfPlane(pixbuf, plane), |
| 63 | + CVPixelBufferGetHeightOfPlane(pixbuf, plane), |
| 64 | + plane, |
| 65 | + &tex |
| 66 | + ); |
| 67 | + if (ret != kCVReturnSuccess) { |
| 68 | + av_log(ctx, AV_LOG_ERROR, "Failed to create CVMetalTexture from image: %d\n", ret); |
| 69 | + return NULL; |
| 70 | + } |
| 71 | + |
| 72 | + return tex; |
| 73 | +} |