Make filters use SkImage instead of SkBitmap

src/effects/SkLightingImageFilter.cpp

Index: src/effects/SkLightingImageFilter.cpp
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index 2454dc1b36cf43d30cac29e9e380c6292823554b..07eb6c9eb778b92b64d062769c086ac2df5971b7 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -8,12 +8,13 @@
 #include "SkLightingImageFilter.h"
 #include "SkBitmap.h"
 #include "SkColorPriv.h"
+#include "SkImagePriv.h"
+#include "SkImage_Base.h"
 #include "SkReadBuffer.h"
-#include "SkWriteBuffer.h"
 #include "SkReadBuffer.h"
-#include "SkWriteBuffer.h"
 #include "SkTypes.h"
-
+#include "SkWriteBuffer.h"
+#include "SkWriteBuffer.h"
 #if SK_SUPPORT_GPU
 #include "GrFragmentProcessor.h"
 #include "GrInvariantOutput.h"
@@ -291,8 +292,8 @@ protected:
                                  SkScalar kd, SkImageFilter* input, const CropRect* cropRect,
                                  uint32_t uniqueID);
     void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE;
-    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
-                               SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
+    virtual bool onFilterImage(Proxy*, const SkImage* src, const Context&,
+                               SkAutoTUnref<const SkImage>&, SkIPoint* offset) const SK_OVERRIDE;
 #if SK_SUPPORT_GPU
     virtual bool asFragmentProcessor(GrFragmentProcessor**, GrTexture*, const SkMatrix&,
                                      const SkIRect& bounds) const SK_OVERRIDE;
@@ -321,8 +322,8 @@ protected:
                                   SkScalar shininess, SkImageFilter* input, const CropRect*,
                                   uint32_t uniqueID);
     void flatten(SkWriteBuffer& buffer) const SK_OVERRIDE;
-    virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
-                               SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE;
+    virtual bool onFilterImage(Proxy*, const SkImage* src, const Context&,
+                               SkAutoTUnref<const SkImage>& result, SkIPoint* offset) const SK_OVERRIDE;
 #if SK_SUPPORT_GPU
     virtual bool asFragmentProcessor(GrFragmentProcessor**, GrTexture*, const SkMatrix&,
                                      const SkIRect& bounds) const SK_OVERRIDE;
@@ -984,56 +985,68 @@ void SkDiffuseLightingImageFilter::flatten(SkWriteBuffer& buffer) const {
 }
 
 bool SkDiffuseLightingImageFilter::onFilterImage(Proxy* proxy,
-                                                 const SkBitmap& source,
+                                                 const SkImage* source,
                                                  const Context& ctx,
-                                                 SkBitmap* dst,
+                                                 SkAutoTUnref<const SkImage>& dst,
                                                  SkIPoint* offset) const {
     SkImageFilter* input = getInput(0);
-    SkBitmap src = source;
+    SkAutoTUnref<const SkImage> src(SkRef(source));
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
-    if (input && !input->filterImage(proxy, source, ctx, &src, &srcOffset)) {
-        return false;
-    }
-
-    if (src.colorType() != kN32_SkColorType) {
+    if (input && !input->filterImage(proxy, source, ctx, src, &srcOffset)) {
         return false;
     }
     SkIRect bounds;
-    if (!this->applyCropRect(ctx, proxy, src, &srcOffset, &bounds, &src)) {
+    if (!this->applyCropRect(ctx, proxy, src, &srcOffset, &bounds, src)) {
         return false;
     }
 
     if (bounds.width() < 2 || bounds.height() < 2) {
         return false;
     }
-
-    SkAutoLockPixels alp(src);
-    if (!src.getPixels()) {
+    SkBitmap srcBitmap;
+    SkAutoAdoptImageAsN32Bitmap aai(src, &srcBitmap);
+    if (NULL == srcBitmap.getPixels()) {
         return false;
     }
 
-    if (!dst->tryAllocPixels(src.info().makeWH(bounds.width(), bounds.height()))) {
+    SkBitmap dstBitmap;
+    if (!dstBitmap.tryAllocPixels(srcBitmap.info().makeWH(bounds.width(), bounds.height()))) {
         return false;
     }
 
     SkAutoTUnref<SkLight> transformedLight(light()->transform(ctx.ctm()));
 
     DiffuseLightingType lightingType(fKD);
-    offset->fX = bounds.left();
-    offset->fY = bounds.top();
+    int32_t resultX = bounds.left();
+    int32_t resultY = bounds.top();
+
     bounds.offset(-srcOffset);
     switch (transformedLight->type()) {
         case SkLight::kDistant_LightType:
-            lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
+            lightBitmap<DiffuseLightingType, SkDistantLight>(lightingType, transformedLight,
+                                                             srcBitmap, &dstBitmap, surfaceScale(),
+                                                             bounds);
             break;
         case SkLight::kPoint_LightType:
-            lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
+            lightBitmap<DiffuseLightingType, SkPointLight>(lightingType, transformedLight,
+                                                           srcBitmap, &dstBitmap, surfaceScale(),
+                                                           bounds);
             break;
         case SkLight::kSpot_LightType:
-            lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
+            lightBitmap<DiffuseLightingType, SkSpotLight>(lightingType, transformedLight, srcBitmap,
+                                                          &dstBitmap, surfaceScale(), bounds);
             break;
     }
 
+    srcBitmap = SkBitmap();
+
+    SkImage* image = SkNewImageFromBitmap(dstBitmap, NULL);
+    if (NULL == image) {
+        return false;
+    }
+    dst.reset(image);
+    offset->fX = resultX;
+    offset->fY = resultY;
     return true;
 }
 
@@ -1100,23 +1113,18 @@ void SkSpecularLightingImageFilter::flatten(SkWriteBuffer& buffer) const {
 }
 
 bool SkSpecularLightingImageFilter::onFilterImage(Proxy* proxy,
-                                                  const SkBitmap& source,
+                                                  const SkImage* source,
                                                   const Context& ctx,
-                                                  SkBitmap* dst,
+                                                  SkAutoTUnref<const SkImage>& dst,
                                                   SkIPoint* offset) const {
     SkImageFilter* input = getInput(0);
-    SkBitmap src = source;
+    SkAutoTUnref<const SkImage> src(SkRef(source));
     SkIPoint srcOffset = SkIPoint::Make(0, 0);
-    if (input && !input->filterImage(proxy, source, ctx, &src, &srcOffset)) {
-        return false;
-    }
-
-    if (src.colorType() != kN32_SkColorType) {
+    if (input && !input->filterImage(proxy, source, ctx, src, &srcOffset)) {
         return false;
     }
-
     SkIRect bounds;
-    if (!this->applyCropRect(ctx, proxy, src, &srcOffset, &bounds, &src)) {
+    if (!this->applyCropRect(ctx, proxy, src, &srcOffset, &bounds, src)) {
         return false;
     }
 
@@ -1124,31 +1132,47 @@ bool SkSpecularLightingImageFilter::onFilterImage(Proxy* proxy,
         return false;
     }
 
-    SkAutoLockPixels alp(src);
-    if (!src.getPixels()) {
+    SkBitmap srcBitmap;
+    SkAutoAdoptImageAsN32Bitmap aai(src, &srcBitmap);
+    if (NULL == srcBitmap.getPixels()) {
         return false;
     }
 
-    if (!dst->tryAllocPixels(src.info().makeWH(bounds.width(), bounds.height()))) {
+    SkBitmap dstBitmap;
+    if (!dstBitmap.tryAllocPixels(srcBitmap.info().makeWH(bounds.width(), bounds.height()))) {
         return false;
     }
 
     SpecularLightingType lightingType(fKS, fShininess);
-    offset->fX = bounds.left();
-    offset->fY = bounds.top();
+    int32_t resultX = bounds.left();
+    int32_t resultY = bounds.top();
+
     bounds.offset(-srcOffset);
     SkAutoTUnref<SkLight> transformedLight(light()->transform(ctx.ctm()));
     switch (transformedLight->type()) {
         case SkLight::kDistant_LightType:
-            lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
+            lightBitmap<SpecularLightingType, SkDistantLight>(lightingType, transformedLight,
+                                                              srcBitmap, &dstBitmap, surfaceScale(),
+                                                              bounds);
             break;
         case SkLight::kPoint_LightType:
-            lightBitmap<SpecularLightingType, SkPointLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
+            lightBitmap<SpecularLightingType, SkPointLight>(lightingType, transformedLight,
+                                                            srcBitmap, &dstBitmap, surfaceScale(),
+                                                            bounds);
             break;
         case SkLight::kSpot_LightType:
-            lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, transformedLight, src, dst, surfaceScale(), bounds);
+            lightBitmap<SpecularLightingType, SkSpotLight>(lightingType, transformedLight,
+                                                           srcBitmap, &dstBitmap, surfaceScale(),
+                                                           bounds);
             break;
     }
+    SkImage* image = SkNewImageFromBitmap(dstBitmap, NULL);
+    if (NULL == image) {
+        return false;
+    }
+    dst.reset(image);
+    offset->fX = resultX;
+    offset->fY = resultY;
     return true;
 }