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/*
* 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
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