epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame^] | 1 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame^] | 3 | * Copyright 2010 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame^] | 10 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 11 | #include "SkGrTexturePixelRef.h" |
| 12 | #include "GrTexture.h" |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 13 | #include "SkRect.h" |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 14 | |
| 15 | // since we call lockPixels recursively on fBitmap, we need a distinct mutex, |
| 16 | // to avoid deadlock with the default one provided by SkPixelRef. |
| 17 | static SkMutex gROLockPixelsPixelRefMutex; |
| 18 | |
| 19 | SkROLockPixelsPixelRef::SkROLockPixelsPixelRef() : INHERITED(&gROLockPixelsPixelRefMutex) { |
| 20 | } |
| 21 | |
| 22 | SkROLockPixelsPixelRef::~SkROLockPixelsPixelRef() { |
| 23 | } |
| 24 | |
| 25 | void* SkROLockPixelsPixelRef::onLockPixels(SkColorTable** ctable) { |
| 26 | if (ctable) { |
| 27 | *ctable = NULL; |
| 28 | } |
| 29 | fBitmap.reset(); |
| 30 | // SkDebugf("---------- calling readpixels in support of lockpixels\n"); |
| 31 | if (!this->onReadPixels(&fBitmap, NULL)) { |
| 32 | SkDebugf("SkROLockPixelsPixelRef::onLockPixels failed!\n"); |
| 33 | return NULL; |
| 34 | } |
| 35 | fBitmap.lockPixels(); |
| 36 | return fBitmap.getPixels(); |
| 37 | } |
| 38 | |
| 39 | void SkROLockPixelsPixelRef::onUnlockPixels() { |
| 40 | fBitmap.unlockPixels(); |
| 41 | } |
| 42 | |
| 43 | bool SkROLockPixelsPixelRef::onLockPixelsAreWritable() const { |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | /////////////////////////////////////////////////////////////////////////////// |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 48 | |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 49 | SkGrTexturePixelRef::SkGrTexturePixelRef(GrTexture* tex) { |
| 50 | fTexture = tex; |
| 51 | GrSafeRef(tex); |
| 52 | } |
| 53 | |
| 54 | SkGrTexturePixelRef::~SkGrTexturePixelRef() { |
| 55 | GrSafeUnref(fTexture); |
| 56 | } |
| 57 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 58 | SkGpuTexture* SkGrTexturePixelRef::getTexture() { |
| 59 | return (SkGpuTexture*)fTexture; |
| 60 | } |
| 61 | |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 62 | bool SkGrTexturePixelRef::onReadPixels(SkBitmap* dst, const SkIRect* subset) { |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 63 | if (NULL != fTexture && fTexture->isValid()) { |
| 64 | int left, top, width, height; |
| 65 | if (NULL != subset) { |
| 66 | left = subset->fLeft; |
| 67 | width = subset->width(); |
| 68 | top = subset->fTop; |
| 69 | height = subset->height(); |
| 70 | } else { |
| 71 | left = 0; |
| 72 | width = fTexture->width(); |
| 73 | top = 0; |
| 74 | height = fTexture->height(); |
| 75 | } |
| 76 | dst->setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 77 | dst->allocPixels(); |
| 78 | SkAutoLockPixels al(*dst); |
| 79 | void* buffer = dst->getPixels(); |
| 80 | return fTexture->readPixels(left, top, width, height, |
| 81 | kRGBA_8888_GrPixelConfig, |
| 82 | buffer); |
| 83 | } else { |
| 84 | return false; |
| 85 | } |
reed@google.com | 50dfa01 | 2011-04-01 19:05:36 +0000 | [diff] [blame] | 86 | } |
reed@google.com | ac10a2d | 2010-12-22 21:39:39 +0000 | [diff] [blame] | 87 | |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 88 | /////////////////////////////////////////////////////////////////////////////// |
bsalomon@google.com | 669fdc4 | 2011-04-05 17:08:27 +0000 | [diff] [blame] | 89 | |
| 90 | SkGrRenderTargetPixelRef::SkGrRenderTargetPixelRef(GrRenderTarget* rt) { |
| 91 | fRenderTarget = rt; |
| 92 | GrSafeRef(fRenderTarget); |
| 93 | } |
| 94 | |
| 95 | SkGrRenderTargetPixelRef::~SkGrRenderTargetPixelRef() { |
| 96 | GrSafeUnref(fRenderTarget); |
| 97 | } |
| 98 | |
| 99 | SkGpuTexture* SkGrRenderTargetPixelRef::getTexture() { |
| 100 | if (NULL != fRenderTarget) { |
| 101 | return (SkGpuTexture*) fRenderTarget->asTexture(); |
| 102 | } |
| 103 | return NULL; |
| 104 | } |
| 105 | |
| 106 | bool SkGrRenderTargetPixelRef::onReadPixels(SkBitmap* dst, const SkIRect* subset) { |
| 107 | if (NULL != fRenderTarget && fRenderTarget->isValid()) { |
| 108 | int left, top, width, height; |
| 109 | if (NULL != subset) { |
| 110 | left = subset->fLeft; |
| 111 | width = subset->width(); |
| 112 | top = subset->fTop; |
| 113 | height = subset->height(); |
| 114 | } else { |
| 115 | left = 0; |
| 116 | width = fRenderTarget->width(); |
| 117 | top = 0; |
| 118 | height = fRenderTarget->height(); |
| 119 | } |
| 120 | dst->setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 121 | dst->allocPixels(); |
| 122 | SkAutoLockPixels al(*dst); |
| 123 | void* buffer = dst->getPixels(); |
| 124 | return fRenderTarget->readPixels(left, top, width, height, |
| 125 | kRGBA_8888_GrPixelConfig, |
| 126 | buffer); |
| 127 | } else { |
| 128 | return false; |
| 129 | } |
reed@google.com | 4281d65 | 2011-04-08 18:54:20 +0000 | [diff] [blame] | 130 | } |
reed@google.com | 9c49bc3 | 2011-07-07 13:42:37 +0000 | [diff] [blame] | 131 | |