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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 | } |