replicant-frameworks_native/services/surfaceflinger/SurfaceTextureLayer.cpp
Mathias Agopian ac6035a12a s/w rendered apps can now use n-buffering (n>2)
Bug: 6311881
Change-Id: I6e52e281e8d432430aad011f6d9dcf35d7b4ac7d
2012-04-13 16:04:44 -07:00

68 lines
2.1 KiB
C++

/*
* Copyright (C) 2011 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.
*/
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include "Layer.h"
#include "SurfaceTextureLayer.h"
namespace android {
// ---------------------------------------------------------------------------
SurfaceTextureLayer::SurfaceTextureLayer()
: BufferQueue(true) {
}
SurfaceTextureLayer::~SurfaceTextureLayer() {
}
status_t SurfaceTextureLayer::connect(int api,
uint32_t* outWidth, uint32_t* outHeight, uint32_t* outTransform) {
status_t err = BufferQueue::connect(api,
outWidth, outHeight, outTransform);
if (err == NO_ERROR) {
switch(api) {
case NATIVE_WINDOW_API_MEDIA:
case NATIVE_WINDOW_API_CAMERA:
// Camera preview and videos are rate-limited on the producer
// side. If enabled for this build, we use async mode to always
// show the most recent frame at the cost of requiring an
// additional buffer.
#ifndef NEVER_DEFAULT_TO_ASYNC_MODE
err = setSynchronousMode(false);
break;
#endif
// fall through to set synchronous mode when not defaulting to
// async mode.
default:
err = setSynchronousMode(true);
break;
}
if (err != NO_ERROR) {
disconnect(api);
}
}
return err;
}
// ---------------------------------------------------------------------------
}; // namespace android