Initial Contribution
diff --git a/libs/surfaceflinger/LayerScreenshot.cpp b/libs/surfaceflinger/LayerScreenshot.cpp
new file mode 100644
index 0000000..9b82bad
--- /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 <graphics/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;
+ case PIXEL_FORMAT_RGBA_8888: cfg = SkBitmap::kARGB_8888_Config;
+ case PIXEL_FORMAT_RGB_565: cfg = SkBitmap::kRGB_565_Config;
+ case PIXEL_FORMAT_A_8: cfg = SkBitmap::kA8_Config;
+ }
+ 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