1 files changed, 69 insertions, 0 deletions
diff --git a/media/libstagefright/SurfaceRenderer.cpp b/media/libstagefright/SurfaceRenderer.cpp
new file mode 100644
index 0000000..e54288d
--- /dev/null
+++ b/media/libstagefright/SurfaceRenderer.cpp
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2009 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 "SurfaceRenderer"
+#include <utils/Log.h>
+
+#undef NDEBUG
+#include <assert.h>
+
+#include <media/stagefright/SurfaceRenderer.h>
+#include <ui/Surface.h>
+
+namespace android {
+
+SurfaceRenderer::SurfaceRenderer(
+        const sp<Surface> &surface,
+        size_t displayWidth, size_t displayHeight,
+        size_t decodedWidth, size_t decodedHeight)
+    : mSurface(surface),
+      mDisplayWidth(displayWidth),
+      mDisplayHeight(displayHeight),
+      mDecodedWidth(decodedWidth),
+      mDecodedHeight(decodedHeight) {
+}
+
+SurfaceRenderer::~SurfaceRenderer() {
+}
+
+void SurfaceRenderer::render(
+        const void *data, size_t size, void *platformPrivate) {
+    Surface::SurfaceInfo info;
+    status_t err = mSurface->lock(&info);
+    if (err != OK) {
+        return;
+    }
+
+    const uint8_t *src = (const uint8_t *)data;
+    uint8_t *dst = (uint8_t *)info.bits;
+
+    for (size_t i = 0; i < mDisplayHeight; ++i) {
+        memcpy(dst, src, mDisplayWidth);
+        src += mDecodedWidth;
+        dst += mDisplayWidth;
+    }
+    src += (mDecodedHeight - mDisplayHeight) * mDecodedWidth;
+    
+    for (size_t i = 0; i < (mDisplayHeight + 1) / 2; ++i) {
+        memcpy(dst, src, (mDisplayWidth + 1) & ~1);
+        src += (mDecodedWidth + 1) & ~1;
+        dst += (mDisplayWidth + 1) & ~1;
+    }
+
+    mSurface->unlockAndPost();
+}
+
+}  // namespace android