blob: d0f0daec9941d7e519b26a5878286d5985e2c8fa [file] [log] [blame]
/*
* 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 "SurfaceFlinger.h"
#include "SurfaceTextureLayer.h"
namespace android {
// ---------------------------------------------------------------------------
SurfaceTextureLayer::SurfaceTextureLayer(const sp<SurfaceFlinger>& flinger)
: BufferQueue(true), flinger(flinger) {
}
SurfaceTextureLayer::~SurfaceTextureLayer() {
// remove ourselves from SurfaceFlinger's list. We do this asynchronously
// because we don't know where this dtor is called from, it could be
// called with the mStateLock held, leading to a dead-lock (it actually
// happens).
class MessageCleanUpList : public MessageBase {
sp<SurfaceFlinger> flinger;
wp<IBinder> gbp;
public:
MessageCleanUpList(const sp<SurfaceFlinger>& flinger, const wp<IBinder>& gbp)
: flinger(flinger), gbp(gbp) { }
virtual bool handler() {
Mutex::Autolock _l(flinger->mStateLock);
flinger->mGraphicBufferProducerList.remove(gbp);
return true;
}
};
flinger->postMessageAsync( new MessageCleanUpList(flinger, this) );
}
status_t SurfaceTextureLayer::connect(int api, QueueBufferOutput* output) {
status_t err = BufferQueue::connect(api, output);
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