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/*
* 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 <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/String8.h>
#include <utils/Vector.h>
#include <hardware/hardware.h>
#include <cutils/log.h>
#include <EGL/egl.h>
#include "LayerBase.h"
#include "HWComposer.h"
#include "SurfaceFlinger.h"
namespace android {
// ---------------------------------------------------------------------------
HWComposer::HWComposer(const sp<SurfaceFlinger>& flinger)
: mFlinger(flinger),
mModule(0), mHwc(0), mList(0), mCapacity(0),
mNumOVLayers(0), mNumFBLayers(0),
mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
{
int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
LOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
if (err == 0) {
err = hwc_open(mModule, &mHwc);
LOGE_IF(err, "%s device failed to initialize (%s)",
HWC_HARDWARE_COMPOSER, strerror(-err));
if (err == 0) {
if (mHwc->registerProcs) {
mCBContext.hwc = this;
mCBContext.procs.invalidate = &hook_invalidate;
mHwc->registerProcs(mHwc, &mCBContext.procs);
}
}
}
}
HWComposer::~HWComposer() {
free(mList);
if (mHwc) {
hwc_close(mHwc);
}
}
status_t HWComposer::initCheck() const {
return mHwc ? NO_ERROR : NO_INIT;
}
void HWComposer::hook_invalidate(struct hwc_procs* procs) {
reinterpret_cast<cb_context *>(procs)->hwc->invalidate();
}
void HWComposer::invalidate() {
mFlinger->repaintEverything();
}
void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
mDpy = (hwc_display_t)dpy;
mSur = (hwc_surface_t)sur;
}
status_t HWComposer::createWorkList(size_t numLayers) {
if (mHwc) {
if (!mList || mCapacity < numLayers) {
free(mList);
size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
mList = (hwc_layer_list_t*)malloc(size);
memset(mList, 0, size);
mCapacity = numLayers;
}
mList->flags = HWC_GEOMETRY_CHANGED;
mList->numHwLayers = numLayers;
}
return NO_ERROR;
}
status_t HWComposer::prepare() const {
int err = mHwc->prepare(mHwc, mList);
if (err == NO_ERROR) {
size_t numOVLayers = 0;
size_t numFBLayers = 0;
size_t count = mList->numHwLayers;
for (size_t i=0 ; i<count ; i++) {
hwc_layer& l(mList->hwLayers[i]);
if (l.flags & HWC_SKIP_LAYER) {
l.compositionType = HWC_FRAMEBUFFER;
}
switch (l.compositionType) {
case HWC_OVERLAY:
numOVLayers++;
break;
case HWC_FRAMEBUFFER:
numFBLayers++;
break;
}
}
mNumOVLayers = numOVLayers;
mNumFBLayers = numFBLayers;
}
return (status_t)err;
}
size_t HWComposer::getLayerCount(int type) const {
switch (type) {
case HWC_OVERLAY:
return mNumOVLayers;
case HWC_FRAMEBUFFER:
return mNumFBLayers;
}
return 0;
}
status_t HWComposer::commit() const {
int err = mHwc->set(mHwc, mDpy, mSur, mList);
if (mList) {
mList->flags &= ~HWC_GEOMETRY_CHANGED;
}
return (status_t)err;
}
status_t HWComposer::release() const {
if (mHwc) {
int err = mHwc->set(mHwc, NULL, NULL, NULL);
return (status_t)err;
}
return NO_ERROR;
}
status_t HWComposer::disable() {
if (mHwc) {
free(mList);
mList = NULL;
int err = mHwc->prepare(mHwc, NULL);
return (status_t)err;
}
return NO_ERROR;
}
size_t HWComposer::getNumLayers() const {
return mList ? mList->numHwLayers : 0;
}
hwc_layer_t* HWComposer::getLayers() const {
return mList ? mList->hwLayers : 0;
}
void HWComposer::dump(String8& result, char* buffer, size_t SIZE,
const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const {
if (mHwc && mList) {
result.append("Hardware Composer state:\n");
snprintf(buffer, SIZE, " numHwLayers=%u, flags=%08x\n",
mList->numHwLayers, mList->flags);
result.append(buffer);
result.append(
" type | handle | hints | flags | tr | blend | format | source crop | frame name \n"
"----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
// " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
for (size_t i=0 ; i<mList->numHwLayers ; i++) {
const hwc_layer_t& l(mList->hwLayers[i]);
const sp<LayerBase> layer(visibleLayersSortedByZ[i]);
int32_t format = -1;
if (layer->getLayer() != NULL) {
const sp<GraphicBuffer>& buffer(layer->getLayer()->getActiveBuffer());
if (buffer != NULL) {
format = buffer->getPixelFormat();
}
}
snprintf(buffer, SIZE,
" %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n",
l.compositionType ? "OVERLAY" : "FB",
intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format,
l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
layer->getName().string());
result.append(buffer);
}
}
if (mHwc && mHwc->common.version >= 1 && mHwc->dump) {
mHwc->dump(mHwc, buffer, SIZE);
result.append(buffer);
}
}
// ---------------------------------------------------------------------------
}; // namespace android
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