gecko-dev/widget/gonk/HWComposer.cpp
Michael Wu 69aedb71ea Bug 771653 - Use HWComposer instead of swapBuffer where appropriate, r=cjones
Some vendors provide a hw composer module which should be used instead of swapBuffers on hardware surfaces.

Based on romaxa's patch.
2012-08-24 15:42:45 -04:00

67 lines
1.8 KiB
C++

/*
* Copyright (C) 2010 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 <string.h>
#include "HWComposer.h"
#include <hardware/hardware.h>
#include <EGL/egl.h>
namespace android {
// ---------------------------------------------------------------------------
HWComposer::HWComposer()
: mModule(0), mHwc(0),
mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
{
}
HWComposer::~HWComposer() {
if (mHwc) {
hwc_close(mHwc);
}
}
int HWComposer::init() {
int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
if (err)
return err;
err = hwc_open(mModule, &mHwc);
LOGE_IF(err, "%s device failed to initialize (%s)",
HWC_HARDWARE_COMPOSER, strerror(-err));
if (err) {
mHwc = NULL;
return err;
}
if (mHwc->registerProcs) {
mCBContext.hwc = this;
mHwc->registerProcs(mHwc, &mCBContext.procs);
}
return 0;
}
status_t HWComposer::swapBuffers(hwc_display_t dpy, hwc_surface_t surf) const {
mHwc->prepare(mHwc, NULL);
int err = mHwc->set(mHwc, dpy, surf, 0);
return (status_t)err;
}
// ---------------------------------------------------------------------------
}; // namespace android