1 files changed, 110 insertions, 0 deletions
diff --git a/libs/surfaceflinger/LayerScreenshot.cpp b/libs/surfaceflinger/LayerScreenshot.cpp
new file mode 100644
index 0000000..fb7b585
--- /dev/null
+++ b/libs/surfaceflinger/LayerScreenshot.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "SurfaceFlinger"
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+
+#include <core/SkBitmap.h>
+
+#include <ui/EGLDisplaySurface.h>
+
+#include "LayerBase.h"
+#include "LayerScreenshot.h"
+#include "SurfaceFlinger.h"
+#include "DisplayHardware/DisplayHardware.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+const uint32_t LayerScreenshot::typeInfo = LayerBase::typeInfo | 0x20;
+const char* const LayerScreenshot::typeID = "LayerScreenshot";
+
+// ---------------------------------------------------------------------------
+
+LayerScreenshot::LayerScreenshot(SurfaceFlinger* flinger, DisplayID display)
+    : LayerBase(flinger, display), mReply(0)
+{
+}
+
+LayerScreenshot::~LayerScreenshot()
+{
+}
+
+void LayerScreenshot::onDraw(const Region& clip) const
+{
+    const DisplayHardware& hw(graphicPlane(0).displayHardware());
+    copybit_image_t dst;
+    hw.getDisplaySurface(&dst);
+    if (dst.base != 0) {
+        uint8_t const* src = (uint8_t const*)(intptr_t(dst.base) + dst.offset); 
+        const int fbWidth = dst.w;
+        const int fbHeight = dst.h;
+        const int fbFormat = dst.format;
+
+        int x = mTransformedBounds.left;
+        int y = mTransformedBounds.top;
+        int w = mTransformedBounds.width();
+        int h = mTransformedBounds.height();
+        Parcel* const reply = mReply;
+        if (reply) {
+            const size_t Bpp = bytesPerPixel(fbFormat);
+            const size_t size = w * h * Bpp;
+            int32_t cfg = SkBitmap::kNo_Config;
+            switch (fbFormat) {
+                case PIXEL_FORMAT_RGBA_4444: cfg = SkBitmap::kARGB_4444_Config; break;
+                case PIXEL_FORMAT_RGBA_8888: cfg = SkBitmap::kARGB_8888_Config; break;
+                case PIXEL_FORMAT_RGB_565:   cfg = SkBitmap::kRGB_565_Config; break;
+                case PIXEL_FORMAT_A_8:       cfg = SkBitmap::kA8_Config; break;
+            }
+            reply->writeInt32(0);
+            reply->writeInt32(cfg);
+            reply->writeInt32(w);
+            reply->writeInt32(h);
+            reply->writeInt32(w * Bpp);
+            void* data = reply->writeInplace(size);
+            if (data) {
+                uint8_t* d = (uint8_t*)data;
+                uint8_t const* s = src + (x + y*fbWidth) * Bpp;
+                if (w == fbWidth) {
+                    memcpy(d, s, w*h*Bpp);   
+                } else {
+                    for (int y=0 ; y<h ; y++) {
+                        memcpy(d, s, w*Bpp);
+                        d += w*Bpp;
+                        s += fbWidth*Bpp;
+                    }
+                }
+            }
+        }
+    }
+    mCV.broadcast();
+}
+
+void LayerScreenshot::takeScreenshot(Mutex& lock, Parcel* reply)
+{
+    mReply = reply;
+    mCV.wait(lock);
+}
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android