LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
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86c1729e75df4009f9d773672579e074cc53f889
android_vendor_qcom_opensou…/libhwcomposer/hwc_utils.cpp
Saurabh Shah 86c1729e75 libqservice: Add a client interface. 
Add a client interface which interfaces with hwc.
qservice upon receiving IPC, provides a callback notification to the qclient
which does appropriate stuff in hwc.

In future, qservice can safely be even made a separate process with no changes
to exisiting code. This was not true earlier owing to the hwc pointer held by
qservice forcing it to be in the same process that hwc is in.

CRs-fixed: 452977
Change-Id: I05838c213f5d4606a6573693de1bacbc5876107e
2013-02-14 17:27:55 -08:00

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/*
* Copyright (C) 2010 The Android Open Source Project
* Copyright (C) 2012-2013, The Linux Foundation All rights reserved.
*
* Not a Contribution, Apache license notifications and license are retained
* for attribution purposes only.
*
* 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 HWC_UTILS_DEBUG 0
#include <sys/ioctl.h>
#include <binder/IServiceManager.h>
#include <EGL/egl.h>
#include <cutils/properties.h>
#include <gralloc_priv.h>
#include <fb_priv.h>
#include <overlay.h>
#include "hwc_utils.h"
#include "hwc_mdpcomp.h"
#include "hwc_fbupdate.h"
#include "mdp_version.h"
#include "hwc_copybit.h"
#include "external.h"
#include "hwc_qclient.h"
#include "QService.h"
#include "comptype.h"
using namespace qClient;
using namespace qService;
using namespace android;
namespace qhwc {
// Opens Framebuffer device
static void openFramebufferDevice(hwc_context_t *ctx)
{
hw_module_t const *module;
if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
framebuffer_open(module, &(ctx->mFbDev));
private_module_t* m = reinterpret_cast<private_module_t*>(
ctx->mFbDev->common.module);
//xres, yres may not be 32 aligned
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].stride = m->finfo.line_length /
(m->info.xres/8);
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres = m->info.xres;
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].yres = m->info.yres;
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xdpi = ctx->mFbDev->xdpi;
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].ydpi = ctx->mFbDev->ydpi;
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period =
1000000000l / ctx->mFbDev->fps;
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = openFb(HWC_DISPLAY_PRIMARY);
}
}
void initContext(hwc_context_t *ctx)
{
openFramebufferDevice(ctx);
overlay::Overlay::initOverlay();
ctx->mOverlay = overlay::Overlay::getInstance();
ctx->mMDP.version = qdutils::MDPVersion::getInstance().getMDPVersion();
ctx->mMDP.hasOverlay = qdutils::MDPVersion::getInstance().hasOverlay();
ctx->mMDP.panel = qdutils::MDPVersion::getInstance().getPanelType();
//Is created and destroyed only once for primary
//For external it could get created and destroyed multiple times depending
//on what external we connect to.
ctx->mFBUpdate[HWC_DISPLAY_PRIMARY] =
IFBUpdate::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres,
HWC_DISPLAY_PRIMARY);
char value[PROPERTY_VALUE_MAX];
// Check if the target supports copybit compostion (dyn/mdp/c2d) to
// decide if we need to open the copybit module.
int compositionType =
qdutils::QCCompositionType::getInstance().getCompositionType();
if (compositionType & (qdutils::COMPOSITION_TYPE_DYN |
qdutils::COMPOSITION_TYPE_MDP |
qdutils::COMPOSITION_TYPE_C2D)) {
ctx->mCopyBit[HWC_DISPLAY_PRIMARY] = new CopyBit();
}
ctx->mExtDisplay = new ExternalDisplay(ctx);
for (uint32_t i = 0; i < HWC_NUM_DISPLAY_TYPES; i++)
ctx->mLayerCache[i] = new LayerCache();
ctx->mMDPComp = MDPComp::getObject(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].xres);
MDPComp::init(ctx);
pthread_mutex_init(&(ctx->vstate.lock), NULL);
pthread_cond_init(&(ctx->vstate.cond), NULL);
ctx->vstate.enable = false;
ctx->mExtDispConfiguring = false;
//Right now hwc starts the service but anybody could do it, or it could be
//independent process as well.
QService::init();
sp<IQClient> client = new QClient(ctx);
interface_cast<IQService>(
defaultServiceManager()->getService(
String16("display.qservice")))->connect(client);
ALOGI("Initializing Qualcomm Hardware Composer");
ALOGI("MDP version: %d", ctx->mMDP.version);
}
void closeContext(hwc_context_t *ctx)
{
if(ctx->mOverlay) {
delete ctx->mOverlay;
ctx->mOverlay = NULL;
}
for(int i = 0; i< HWC_NUM_DISPLAY_TYPES; i++) {
if(ctx->mCopyBit[i]) {
delete ctx->mCopyBit[i];
ctx->mCopyBit[i] = NULL;
}
}
if(ctx->mFbDev) {
framebuffer_close(ctx->mFbDev);
ctx->mFbDev = NULL;
close(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd);
ctx->dpyAttr[HWC_DISPLAY_PRIMARY].fd = -1;
}
if(ctx->mExtDisplay) {
delete ctx->mExtDisplay;
ctx->mExtDisplay = NULL;
}
for(int i = 0; i < HWC_NUM_DISPLAY_TYPES; i++) {
if(ctx->mFBUpdate[i]) {
delete ctx->mFBUpdate[i];
ctx->mFBUpdate[i] = NULL;
}
}
if(ctx->mMDPComp) {
delete ctx->mMDPComp;
ctx->mMDPComp = NULL;
}
pthread_mutex_destroy(&(ctx->vstate.lock));
pthread_cond_destroy(&(ctx->vstate.cond));
}
void dumpsys_log(android::String8& buf, const char* fmt, ...)
{
va_list varargs;
va_start(varargs, fmt);
buf.appendFormatV(fmt, varargs);
va_end(varargs);
}
/* Calculates the destination position based on the action safe rectangle */
void getActionSafePosition(hwc_context_t *ctx, int dpy, uint32_t& x,
uint32_t& y, uint32_t& w, uint32_t& h) {
// if external supports underscan, do nothing
// it will be taken care in the driver
if(ctx->mExtDisplay->isCEUnderscanSupported())
return;
float wRatio = 1.0;
float hRatio = 1.0;
float xRatio = 1.0;
float yRatio = 1.0;
float fbWidth = ctx->dpyAttr[dpy].xres;
float fbHeight = ctx->dpyAttr[dpy].yres;
float asX = 0;
float asY = 0;
float asW = fbWidth;
float asH= fbHeight;
char value[PROPERTY_VALUE_MAX];
// Apply action safe parameters
property_get("hw.actionsafe.width", value, "0");
int asWidthRatio = atoi(value);
property_get("hw.actionsafe.height", value, "0");
int asHeightRatio = atoi(value);
// based on the action safe ratio, get the Action safe rectangle
asW = fbWidth * (1.0f - asWidthRatio / 100.0f);
asH = fbHeight * (1.0f - asHeightRatio / 100.0f);
asX = (fbWidth - asW) / 2;
asY = (fbHeight - asH) / 2;
// calculate the position ratio
xRatio = (float)x/fbWidth;
yRatio = (float)y/fbHeight;
wRatio = (float)w/fbWidth;
hRatio = (float)h/fbHeight;
//Calculate the position...
x = (xRatio * asW) + asX;
y = (yRatio * asH) + asY;
w = (wRatio * asW);
h = (hRatio * asH);
return;
}
static inline bool isAlphaScaled(hwc_layer_1_t const* layer) {
int dst_w, dst_h, src_w, src_h;
hwc_rect_t displayFrame = layer->displayFrame;
hwc_rect_t sourceCrop = layer->sourceCrop;
dst_w = displayFrame.right - displayFrame.left;
dst_h = displayFrame.bottom - displayFrame.top;
src_w = sourceCrop.right - sourceCrop.left;
src_h = sourceCrop.bottom - sourceCrop.top;
if(((src_w != dst_w) || (src_h != dst_h))) {
if(layer->blending != HWC_BLENDING_NONE)
return true;
}
return false;
}
void setListStats(hwc_context_t *ctx,
const hwc_display_contents_1_t *list, int dpy) {
ctx->listStats[dpy].numAppLayers = list->numHwLayers - 1;
ctx->listStats[dpy].fbLayerIndex = list->numHwLayers - 1;
ctx->listStats[dpy].skipCount = 0;
ctx->listStats[dpy].needsAlphaScale = false;
ctx->listStats[dpy].yuvCount = 0;
for (size_t i = 0; i < list->numHwLayers; i++) {
hwc_layer_1_t const* layer = &list->hwLayers[i];
private_handle_t *hnd = (private_handle_t *)layer->handle;
//reset stored yuv index
ctx->listStats[dpy].yuvIndices[i] = -1;
if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
continue;
//We disregard FB being skip for now! so the else if
} else if (isSkipLayer(&list->hwLayers[i])) {
ctx->listStats[dpy].skipCount++;
} else if (UNLIKELY(isYuvBuffer(hnd))) {
int& yuvCount = ctx->listStats[dpy].yuvCount;
ctx->listStats[dpy].yuvIndices[yuvCount] = i;
yuvCount++;
}
if(!ctx->listStats[dpy].needsAlphaScale)
ctx->listStats[dpy].needsAlphaScale = isAlphaScaled(layer);
}
}
static inline void calc_cut(float& leftCutRatio, float& topCutRatio,
float& rightCutRatio, float& bottomCutRatio, int orient) {
if(orient & HAL_TRANSFORM_FLIP_H) {
swap(leftCutRatio, rightCutRatio);
}
if(orient & HAL_TRANSFORM_FLIP_V) {
swap(topCutRatio, bottomCutRatio);
}
if(orient & HAL_TRANSFORM_ROT_90) {
//Anti clock swapping
float tmpCutRatio = leftCutRatio;
leftCutRatio = topCutRatio;
topCutRatio = rightCutRatio;
rightCutRatio = bottomCutRatio;
bottomCutRatio = tmpCutRatio;
}
}
bool isSecuring(hwc_context_t* ctx) {
if((ctx->mMDP.version < qdutils::MDSS_V5) &&
(ctx->mMDP.version > qdutils::MDP_V3_0) &&
ctx->mSecuring) {
return true;
}
return false;
}
bool isSecureModePolicy(int mdpVersion) {
if (mdpVersion < qdutils::MDSS_V5)
return true;
else
return false;
}
//Crops source buffer against destination and FB boundaries
void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst,
const int fbWidth, const int fbHeight, int orient) {
int& crop_l = crop.left;
int& crop_t = crop.top;
int& crop_r = crop.right;
int& crop_b = crop.bottom;
int crop_w = crop.right - crop.left;
int crop_h = crop.bottom - crop.top;
int& dst_l = dst.left;
int& dst_t = dst.top;
int& dst_r = dst.right;
int& dst_b = dst.bottom;
int dst_w = abs(dst.right - dst.left);
int dst_h = abs(dst.bottom - dst.top);
float leftCutRatio = 0.0f, rightCutRatio = 0.0f, topCutRatio = 0.0f,
bottomCutRatio = 0.0f;
if(dst_l < 0) {
leftCutRatio = (float)(0.0f - dst_l) / (float)dst_w;
dst_l = 0;
}
if(dst_r > fbWidth) {
rightCutRatio = (float)(dst_r - fbWidth) / (float)dst_w;
dst_r = fbWidth;
}
if(dst_t < 0) {
topCutRatio = (float)(0 - dst_t) / (float)dst_h;
dst_t = 0;
}
if(dst_b > fbHeight) {
bottomCutRatio = (float)(dst_b - fbHeight) / (float)dst_h;
dst_b = fbHeight;
}
calc_cut(leftCutRatio, topCutRatio, rightCutRatio, bottomCutRatio, orient);
crop_l += crop_w * leftCutRatio;
crop_t += crop_h * topCutRatio;
crop_r -= crop_w * rightCutRatio;
crop_b -= crop_h * bottomCutRatio;
}
bool isExternalActive(hwc_context_t* ctx) {
return ctx->dpyAttr[HWC_DISPLAY_EXTERNAL].isActive;
}
int hwc_sync(hwc_context_t *ctx, hwc_display_contents_1_t* list, int dpy,
int fd) {
int ret = 0;
struct mdp_buf_sync data;
int acquireFd[MAX_NUM_LAYERS];
int count = 0;
int releaseFd = -1;
int fbFd = -1;
memset(&data, 0, sizeof(data));
bool swapzero = false;
data.flags = MDP_BUF_SYNC_FLAG_WAIT;
data.acq_fen_fd = acquireFd;
data.rel_fen_fd = &releaseFd;
char property[PROPERTY_VALUE_MAX];
if(property_get("debug.egl.swapinterval", property, "1") > 0) {
if(atoi(property) == 0)
swapzero = true;
}
//Accumulate acquireFenceFds
for(uint32_t i = 0; i < list->numHwLayers; i++) {
if(list->hwLayers[i].compositionType == HWC_OVERLAY &&
list->hwLayers[i].acquireFenceFd != -1) {
if(UNLIKELY(swapzero))
acquireFd[count++] = -1;
else
acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
}
if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
if(UNLIKELY(swapzero))
acquireFd[count++] = -1;
else if(fd != -1) {
//set the acquireFD from fd - which is coming from c2d
acquireFd[count++] = fd;
// Buffer sync IOCTL should be async when using c2d fence is
// used
data.flags &= ~MDP_BUF_SYNC_FLAG_WAIT;
} else if(list->hwLayers[i].acquireFenceFd != -1)
acquireFd[count++] = list->hwLayers[i].acquireFenceFd;
}
}
data.acq_fen_fd_cnt = count;
fbFd = ctx->dpyAttr[dpy].fd;
//Waits for acquire fences, returns a release fence
if(LIKELY(!swapzero)) {
uint64_t start = systemTime();
ret = ioctl(fbFd, MSMFB_BUFFER_SYNC, &data);
ALOGD_IF(HWC_UTILS_DEBUG, "%s: time taken for MSMFB_BUFFER_SYNC IOCTL = %d",
__FUNCTION__, (size_t) ns2ms(systemTime() - start));
}
if(ret < 0) {
ALOGE("ioctl MSMFB_BUFFER_SYNC failed, err=%s",
strerror(errno));
}
for(uint32_t i = 0; i < list->numHwLayers; i++) {
if(list->hwLayers[i].compositionType == HWC_OVERLAY ||
list->hwLayers[i].compositionType == HWC_FRAMEBUFFER_TARGET) {
//Close the acquireFenceFds
if(list->hwLayers[i].acquireFenceFd > 0) {
close(list->hwLayers[i].acquireFenceFd);
list->hwLayers[i].acquireFenceFd = -1;
}
if(fd > 0) {
close(fd);
fd = -1;
}
//Populate releaseFenceFds.
if(UNLIKELY(swapzero))
list->hwLayers[i].releaseFenceFd = -1;
else
list->hwLayers[i].releaseFenceFd = dup(releaseFd);
}
}
if(UNLIKELY(swapzero)){
list->retireFenceFd = -1;
close(releaseFd);
} else {
list->retireFenceFd = releaseFd;
}
return ret;
}
void LayerCache::resetLayerCache(int num) {
for(uint32_t i = 0; i < MAX_NUM_LAYERS; i++) {
hnd[i] = NULL;
}
numHwLayers = num;
}
void LayerCache::updateLayerCache(hwc_display_contents_1_t* list) {
int numFbLayers = 0;
int numCacheableLayers = 0;
canUseLayerCache = false;
//Bail if geometry changed or num of layers changed
if(list->flags & HWC_GEOMETRY_CHANGED ||
list->numHwLayers != numHwLayers ) {
resetLayerCache(list->numHwLayers);
return;
}
for(uint32_t i = 0; i < list->numHwLayers; i++) {
//Bail on skip layers
if(list->hwLayers[i].flags & HWC_SKIP_LAYER) {
resetLayerCache(list->numHwLayers);
return;
}
if(list->hwLayers[i].compositionType == HWC_FRAMEBUFFER) {
numFbLayers++;
if(hnd[i] == NULL) {
hnd[i] = list->hwLayers[i].handle;
} else if (hnd[i] ==
list->hwLayers[i].handle) {
numCacheableLayers++;
} else {
hnd[i] = NULL;
return;
}
} else {
hnd[i] = NULL;
}
}
if(numFbLayers == numCacheableLayers)
canUseLayerCache = true;
//XXX: The marking part is separate, if MDP comp wants
// to use it in the future. Right now getting MDP comp
// to use this is more trouble than it is worth.
markCachedLayersAsOverlay(list);
}
void LayerCache::markCachedLayersAsOverlay(hwc_display_contents_1_t* list) {
//This optimization only works if ALL the layer handles
//that were on the framebuffer didn't change.
if(canUseLayerCache){
for(uint32_t i = 0; i < list->numHwLayers; i++) {
if (list->hwLayers[i].handle &&
list->hwLayers[i].handle == hnd[i] &&
list->hwLayers[i].compositionType != HWC_FRAMEBUFFER_TARGET)
{
list->hwLayers[i].compositionType = HWC_OVERLAY;
}
}
}
}
};//namespace
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