Brian Salomon | 0857bef | 2021-01-13 15:54:04 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2021 Google LLC |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "src/gpu/GrYUVATextureProxies.h" |
| 9 | |
| 10 | #ifdef SK_DEBUG |
| 11 | static int num_channels(uint32_t channelFlags) { |
| 12 | switch (channelFlags) { |
| 13 | case kRed_SkColorChannelFlag : return 1; |
| 14 | case kAlpha_SkColorChannelFlag : return 1; |
| 15 | case kGray_SkColorChannelFlag : return 1; |
| 16 | case kGrayAlpha_SkColorChannelFlags : return 2; |
| 17 | case kRG_SkColorChannelFlags : return 2; |
| 18 | case kRGB_SkColorChannelFlags : return 3; |
| 19 | case kRGBA_SkColorChannelFlags : return 4; |
| 20 | |
| 21 | default: |
| 22 | SkDEBUGFAILF("Unexpected channel combination 0x%08x", channelFlags); |
| 23 | return 0; |
| 24 | } |
| 25 | } |
| 26 | #endif |
| 27 | |
| 28 | GrYUVATextureProxies::GrYUVATextureProxies(const SkYUVAInfo& yuvaInfo, |
| 29 | sk_sp<GrSurfaceProxy> proxies[SkYUVAInfo::kMaxPlanes], |
| 30 | GrSurfaceOrigin textureOrigin) |
| 31 | : fYUVAInfo(yuvaInfo), fTextureOrigin(textureOrigin) { |
| 32 | int n = yuvaInfo.numPlanes(); |
| 33 | if (n == 0) { |
| 34 | *this = {}; |
| 35 | SkASSERT(!this->isValid()); |
| 36 | return; |
| 37 | } |
| 38 | uint32_t textureChannelMasks[SkYUVAInfo::kMaxPlanes]; |
| 39 | for (int i = 0; i < n; ++i) { |
| 40 | if (!proxies[i]) { |
| 41 | *this = {}; |
| 42 | SkASSERT(!this->isValid()); |
| 43 | return; |
| 44 | } |
| 45 | textureChannelMasks[i] = proxies[i]->backendFormat().channelMask(); |
| 46 | } |
| 47 | fYUVALocations = yuvaInfo.toYUVALocations(textureChannelMasks); |
| 48 | if (fYUVALocations[0].fPlane < 0) { |
| 49 | *this = {}; |
| 50 | SkASSERT(!this->isValid()); |
| 51 | return; |
| 52 | } |
| 53 | fMipmapped = GrMipmapped::kYes; |
| 54 | for (size_t i = 0; i < static_cast<size_t>(n); ++i) { |
| 55 | if (!proxies[i]) { |
| 56 | *this = {}; |
| 57 | SkASSERT(!this->isValid()); |
| 58 | return; |
| 59 | } |
| 60 | SkASSERT(proxies[i]->asTextureProxy()); |
| 61 | if (proxies[i]->asTextureProxy()->mipmapped() == GrMipmapped::kNo) { |
| 62 | fMipmapped = GrMipmapped::kNo; |
| 63 | } |
| 64 | fProxies[i] = std::move(proxies[i]); |
| 65 | } |
| 66 | SkASSERT(this->isValid()); |
| 67 | } |
| 68 | |
| 69 | GrYUVATextureProxies::GrYUVATextureProxies(const SkYUVAInfo& yuvaInfo, |
| 70 | GrSurfaceProxyView views[SkYUVAInfo::kMaxPlanes], |
| 71 | GrColorType colorTypes[SkYUVAInfo::kMaxPlanes]) |
| 72 | : fYUVAInfo(yuvaInfo) { |
| 73 | uint32_t pixmapChannelMasks[SkYUVAInfo::kMaxPlanes]; |
| 74 | int n = yuvaInfo.numPlanes(); |
| 75 | if (n == 0) { |
| 76 | *this = {}; |
| 77 | SkASSERT(!this->isValid()); |
| 78 | return; |
| 79 | } |
| 80 | fMipmapped = GrMipmapped::kYes; |
| 81 | for (int i = 0; i < n; ++i) { |
| 82 | pixmapChannelMasks[i] = GrColorTypeChannelFlags(colorTypes[i]); |
| 83 | SkASSERT(num_channels(pixmapChannelMasks[i]) <= |
| 84 | num_channels(views[i].proxy()->backendFormat().channelMask())); |
| 85 | if (!views[i] || views[i].origin() != views[0].origin()) { |
| 86 | *this = {}; |
| 87 | SkASSERT(!this->isValid()); |
| 88 | return; |
| 89 | } |
| 90 | if (views[i].proxy()->asTextureProxy()->mipmapped() == GrMipmapped::kNo) { |
| 91 | fMipmapped = GrMipmapped::kNo; |
| 92 | } |
| 93 | } |
| 94 | // Initial locations refer to the CPU pixmap channels. |
| 95 | fYUVALocations = yuvaInfo.toYUVALocations(pixmapChannelMasks); |
| 96 | if (fYUVALocations[0].fPlane < 0) { |
| 97 | *this = {}; |
| 98 | SkASSERT(!this->isValid()); |
| 99 | return; |
| 100 | } |
| 101 | |
| 102 | // Run each location through the proxy view's swizzle to get the actual texture format channel. |
| 103 | for (int i = 0; i < SkYUVAInfo::kYUVAChannelCount; ++i) { |
| 104 | int plane = fYUVALocations[i].fPlane; |
| 105 | if (plane >= 0) { |
| 106 | int chanAsIdx = static_cast<int>(fYUVALocations[i].fChannel); |
| 107 | switch (views[plane].swizzle()[chanAsIdx]) { |
| 108 | case 'r': fYUVALocations[i].fChannel = SkColorChannel::kR; break; |
| 109 | case 'g': fYUVALocations[i].fChannel = SkColorChannel::kG; break; |
| 110 | case 'b': fYUVALocations[i].fChannel = SkColorChannel::kB; break; |
| 111 | case 'a': fYUVALocations[i].fChannel = SkColorChannel::kA; break; |
| 112 | |
| 113 | default: |
| 114 | SkDEBUGFAILF("Unexpected swizzle value: %c", views[i].swizzle()[chanAsIdx]); |
| 115 | *this = {}; |
| 116 | SkASSERT(!this->isValid()); |
| 117 | return; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | for (int i = 0; i < n; ++i) { |
| 122 | fProxies[i] = views[i].detachProxy(); |
| 123 | } |
| 124 | fTextureOrigin = views[0].origin(); |
| 125 | SkASSERT(this->isValid()); |
| 126 | } |