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replicant-frameworks_native/services/surfaceflinger/DisplayHardware/HWComposer.cpp
Jesse Hall 4d407a0f05 surfaceflinger: Trace HW vsync enable 
This makes it possible to tell whether two HW vsync signals are too
far apart because one was late, or because we turned HW vsync off
briefly between them.

Bug: 17259382
Change-Id: If4fba2a8a6013568349949ce87c5c36f0468d2a2
2014-08-25 16:05:01 -07:00

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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.
*/
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <inttypes.h>
#include <math.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/misc.h>
#include <utils/NativeHandle.h>
#include <utils/String8.h>
#include <utils/Thread.h>
#include <utils/Trace.h>
#include <utils/Vector.h>
#include <ui/GraphicBuffer.h>
#include <hardware/hardware.h>
#include <hardware/hwcomposer.h>
#include <android/configuration.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include "HWComposer.h"
#include "../Layer.h" // needed only for debugging
#include "../SurfaceFlinger.h"
namespace android {
#define MIN_HWC_HEADER_VERSION HWC_HEADER_VERSION
static uint32_t hwcApiVersion(const hwc_composer_device_1_t* hwc) {
uint32_t hwcVersion = hwc->common.version;
return hwcVersion & HARDWARE_API_VERSION_2_MAJ_MIN_MASK;
}
static uint32_t hwcHeaderVersion(const hwc_composer_device_1_t* hwc) {
uint32_t hwcVersion = hwc->common.version;
return hwcVersion & HARDWARE_API_VERSION_2_HEADER_MASK;
}
static bool hwcHasApiVersion(const hwc_composer_device_1_t* hwc,
uint32_t version) {
return hwcApiVersion(hwc) >= (version & HARDWARE_API_VERSION_2_MAJ_MIN_MASK);
}
// ---------------------------------------------------------------------------
struct HWComposer::cb_context {
struct callbacks : public hwc_procs_t {
// these are here to facilitate the transition when adding
// new callbacks (an implementation can check for NULL before
// calling a new callback).
void (*zero[4])(void);
};
callbacks procs;
HWComposer* hwc;
};
// ---------------------------------------------------------------------------
HWComposer::HWComposer(
const sp<SurfaceFlinger>& flinger,
EventHandler& handler)
: mFlinger(flinger),
mFbDev(0), mHwc(0), mNumDisplays(1),
mCBContext(new cb_context),
mEventHandler(handler),
mDebugForceFakeVSync(false)
{
for (size_t i =0 ; i<MAX_HWC_DISPLAYS ; i++) {
mLists[i] = 0;
}
for (size_t i=0 ; i<HWC_NUM_PHYSICAL_DISPLAY_TYPES ; i++) {
mLastHwVSync[i] = 0;
mVSyncCounts[i] = 0;
}
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.no_hw_vsync", value, "0");
mDebugForceFakeVSync = atoi(value);
bool needVSyncThread = true;
// Note: some devices may insist that the FB HAL be opened before HWC.
int fberr = loadFbHalModule();
loadHwcModule();
if (mFbDev && mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// close FB HAL if we don't needed it.
// FIXME: this is temporary until we're not forced to open FB HAL
// before HWC.
framebuffer_close(mFbDev);
mFbDev = NULL;
}
// If we have no HWC, or a pre-1.1 HWC, an FB dev is mandatory.
if ((!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
&& !mFbDev) {
ALOGE("ERROR: failed to open framebuffer (%s), aborting",
strerror(-fberr));
abort();
}
// these display IDs are always reserved
for (size_t i=0 ; i<NUM_BUILTIN_DISPLAYS ; i++) {
mAllocatedDisplayIDs.markBit(i);
}
if (mHwc) {
ALOGI("Using %s version %u.%u", HWC_HARDWARE_COMPOSER,
(hwcApiVersion(mHwc) >> 24) & 0xff,
(hwcApiVersion(mHwc) >> 16) & 0xff);
if (mHwc->registerProcs) {
mCBContext->hwc = this;
mCBContext->procs.invalidate = &hook_invalidate;
mCBContext->procs.vsync = &hook_vsync;
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
mCBContext->procs.hotplug = &hook_hotplug;
else
mCBContext->procs.hotplug = NULL;
memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero));
mHwc->registerProcs(mHwc, &mCBContext->procs);
}
// don't need a vsync thread if we have a hardware composer
needVSyncThread = false;
// always turn vsync off when we start
eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0);
// the number of displays we actually have depends on the
// hw composer version
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
// 1.3 adds support for virtual displays
mNumDisplays = MAX_HWC_DISPLAYS;
} else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// 1.1 adds support for multiple displays
mNumDisplays = NUM_BUILTIN_DISPLAYS;
} else {
mNumDisplays = 1;
}
}
if (mFbDev) {
ALOG_ASSERT(!(mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)),
"should only have fbdev if no hwc or hwc is 1.0");
DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]);
disp.connected = true;
disp.format = mFbDev->format;
DisplayConfig config = DisplayConfig();
config.width = mFbDev->width;
config.height = mFbDev->height;
config.xdpi = mFbDev->xdpi;
config.ydpi = mFbDev->ydpi;
config.refresh = nsecs_t(1e9 / mFbDev->fps);
disp.configs.push_back(config);
disp.currentConfig = 0;
} else if (mHwc) {
// here we're guaranteed to have at least HWC 1.1
for (size_t i =0 ; i<NUM_BUILTIN_DISPLAYS ; i++) {
queryDisplayProperties(i);
}
}
if (needVSyncThread) {
// we don't have VSYNC support, we need to fake it
mVSyncThread = new VSyncThread(*this);
}
}
HWComposer::~HWComposer() {
if (mHwc) {
eventControl(HWC_DISPLAY_PRIMARY, HWC_EVENT_VSYNC, 0);
}
if (mVSyncThread != NULL) {
mVSyncThread->requestExitAndWait();
}
if (mHwc) {
hwc_close_1(mHwc);
}
if (mFbDev) {
framebuffer_close(mFbDev);
}
delete mCBContext;
}
// Load and prepare the hardware composer module. Sets mHwc.
void HWComposer::loadHwcModule()
{
hw_module_t const* module;
if (hw_get_module(HWC_HARDWARE_MODULE_ID, &module) != 0) {
ALOGE("%s module not found", HWC_HARDWARE_MODULE_ID);
return;
}
int err = hwc_open_1(module, &mHwc);
if (err) {
ALOGE("%s device failed to initialize (%s)",
HWC_HARDWARE_COMPOSER, strerror(-err));
return;
}
if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_0) ||
hwcHeaderVersion(mHwc) < MIN_HWC_HEADER_VERSION ||
hwcHeaderVersion(mHwc) > HWC_HEADER_VERSION) {
ALOGE("%s device version %#x unsupported, will not be used",
HWC_HARDWARE_COMPOSER, mHwc->common.version);
hwc_close_1(mHwc);
mHwc = NULL;
return;
}
}
// Load and prepare the FB HAL, which uses the gralloc module. Sets mFbDev.
int HWComposer::loadFbHalModule()
{
hw_module_t const* module;
int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
if (err != 0) {
ALOGE("%s module not found", GRALLOC_HARDWARE_MODULE_ID);
return err;
}
return framebuffer_open(module, &mFbDev);
}
status_t HWComposer::initCheck() const {
return mHwc ? NO_ERROR : NO_INIT;
}
void HWComposer::hook_invalidate(const struct hwc_procs* procs) {
cb_context* ctx = reinterpret_cast<cb_context*>(
const_cast<hwc_procs_t*>(procs));
ctx->hwc->invalidate();
}
void HWComposer::hook_vsync(const struct hwc_procs* procs, int disp,
int64_t timestamp) {
cb_context* ctx = reinterpret_cast<cb_context*>(
const_cast<hwc_procs_t*>(procs));
ctx->hwc->vsync(disp, timestamp);
}
void HWComposer::hook_hotplug(const struct hwc_procs* procs, int disp,
int connected) {
cb_context* ctx = reinterpret_cast<cb_context*>(
const_cast<hwc_procs_t*>(procs));
ctx->hwc->hotplug(disp, connected);
}
void HWComposer::invalidate() {
mFlinger->repaintEverything();
}
void HWComposer::vsync(int disp, int64_t timestamp) {
if (uint32_t(disp) < HWC_NUM_PHYSICAL_DISPLAY_TYPES) {
{
Mutex::Autolock _l(mLock);
// There have been reports of HWCs that signal several vsync events
// with the same timestamp when turning the display off and on. This
// is a bug in the HWC implementation, but filter the extra events
// out here so they don't cause havoc downstream.
if (timestamp == mLastHwVSync[disp]) {
ALOGW("Ignoring duplicate VSYNC event from HWC (t=%" PRId64 ")",
timestamp);
return;
}
mLastHwVSync[disp] = timestamp;
}
char tag[16];
snprintf(tag, sizeof(tag), "HW_VSYNC_%1u", disp);
ATRACE_INT(tag, ++mVSyncCounts[disp] & 1);
mEventHandler.onVSyncReceived(disp, timestamp);
}
}
void HWComposer::hotplug(int disp, int connected) {
if (disp == HWC_DISPLAY_PRIMARY || disp >= VIRTUAL_DISPLAY_ID_BASE) {
ALOGE("hotplug event received for invalid display: disp=%d connected=%d",
disp, connected);
return;
}
queryDisplayProperties(disp);
mEventHandler.onHotplugReceived(disp, bool(connected));
}
static float getDefaultDensity(uint32_t height) {
if (height >= 1080) return ACONFIGURATION_DENSITY_XHIGH;
else return ACONFIGURATION_DENSITY_TV;
}
static const uint32_t DISPLAY_ATTRIBUTES[] = {
HWC_DISPLAY_VSYNC_PERIOD,
HWC_DISPLAY_WIDTH,
HWC_DISPLAY_HEIGHT,
HWC_DISPLAY_DPI_X,
HWC_DISPLAY_DPI_Y,
HWC_DISPLAY_NO_ATTRIBUTE,
};
#define NUM_DISPLAY_ATTRIBUTES (sizeof(DISPLAY_ATTRIBUTES) / sizeof(DISPLAY_ATTRIBUTES)[0])
status_t HWComposer::queryDisplayProperties(int disp) {
LOG_ALWAYS_FATAL_IF(!mHwc || !hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1));
// use zero as default value for unspecified attributes
int32_t values[NUM_DISPLAY_ATTRIBUTES - 1];
memset(values, 0, sizeof(values));
const size_t MAX_NUM_CONFIGS = 128;
uint32_t configs[MAX_NUM_CONFIGS] = {0};
size_t numConfigs = MAX_NUM_CONFIGS;
status_t err = mHwc->getDisplayConfigs(mHwc, disp, configs, &numConfigs);
if (err != NO_ERROR) {
// this can happen if an unpluggable display is not connected
mDisplayData[disp].connected = false;
return err;
}
mDisplayData[disp].currentConfig = 0;
for (size_t c = 0; c < numConfigs; ++c) {
err = mHwc->getDisplayAttributes(mHwc, disp, configs[c],
DISPLAY_ATTRIBUTES, values);
if (err != NO_ERROR) {
// we can't get this display's info. turn it off.
mDisplayData[disp].connected = false;
return err;
}
DisplayConfig config = DisplayConfig();
for (size_t i = 0; i < NUM_DISPLAY_ATTRIBUTES - 1; i++) {
switch (DISPLAY_ATTRIBUTES[i]) {
case HWC_DISPLAY_VSYNC_PERIOD:
config.refresh = nsecs_t(values[i]);
break;
case HWC_DISPLAY_WIDTH:
config.width = values[i];
break;
case HWC_DISPLAY_HEIGHT:
config.height = values[i];
break;
case HWC_DISPLAY_DPI_X:
config.xdpi = values[i] / 1000.0f;
break;
case HWC_DISPLAY_DPI_Y:
config.ydpi = values[i] / 1000.0f;
break;
default:
ALOG_ASSERT(false, "unknown display attribute[%zu] %#x",
i, DISPLAY_ATTRIBUTES[i]);
break;
}
}
if (config.xdpi == 0.0f || config.ydpi == 0.0f) {
float dpi = getDefaultDensity(config.height);
config.xdpi = dpi;
config.ydpi = dpi;
}
mDisplayData[disp].configs.push_back(config);
}
// FIXME: what should we set the format to?
mDisplayData[disp].format = HAL_PIXEL_FORMAT_RGBA_8888;
mDisplayData[disp].connected = true;
return NO_ERROR;
}
status_t HWComposer::setVirtualDisplayProperties(int32_t id,
uint32_t w, uint32_t h, uint32_t format) {
if (id < VIRTUAL_DISPLAY_ID_BASE || id >= int32_t(mNumDisplays) ||
!mAllocatedDisplayIDs.hasBit(id)) {
return BAD_INDEX;
}
size_t configId = mDisplayData[id].currentConfig;
mDisplayData[id].format = format;
DisplayConfig& config = mDisplayData[id].configs.editItemAt(configId);
config.width = w;
config.height = h;
config.xdpi = config.ydpi = getDefaultDensity(h);
return NO_ERROR;
}
int32_t HWComposer::allocateDisplayId() {
if (mAllocatedDisplayIDs.count() >= mNumDisplays) {
return NO_MEMORY;
}
int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit();
mAllocatedDisplayIDs.markBit(id);
mDisplayData[id].connected = true;
mDisplayData[id].configs.resize(1);
mDisplayData[id].currentConfig = 0;
return id;
}
status_t HWComposer::freeDisplayId(int32_t id) {
if (id < NUM_BUILTIN_DISPLAYS) {
// cannot free the reserved IDs
return BAD_VALUE;
}
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return BAD_INDEX;
}
mAllocatedDisplayIDs.clearBit(id);
mDisplayData[id].connected = false;
return NO_ERROR;
}
nsecs_t HWComposer::getRefreshTimestamp(int disp) const {
// this returns the last refresh timestamp.
// if the last one is not available, we estimate it based on
// the refresh period and whatever closest timestamp we have.
Mutex::Autolock _l(mLock);
nsecs_t now = systemTime(CLOCK_MONOTONIC);
size_t configId = mDisplayData[disp].currentConfig;
return now - ((now - mLastHwVSync[disp]) %
mDisplayData[disp].configs[configId].refresh);
}
sp<Fence> HWComposer::getDisplayFence(int disp) const {
return mDisplayData[disp].lastDisplayFence;
}
uint32_t HWComposer::getFormat(int disp) const {
if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) {
return HAL_PIXEL_FORMAT_RGBA_8888;
} else {
return mDisplayData[disp].format;
}
}
bool HWComposer::isConnected(int disp) const {
return mDisplayData[disp].connected;
}
uint32_t HWComposer::getWidth(int disp) const {
size_t currentConfig = mDisplayData[disp].currentConfig;
return mDisplayData[disp].configs[currentConfig].width;
}
uint32_t HWComposer::getHeight(int disp) const {
size_t currentConfig = mDisplayData[disp].currentConfig;
return mDisplayData[disp].configs[currentConfig].height;
}
float HWComposer::getDpiX(int disp) const {
size_t currentConfig = mDisplayData[disp].currentConfig;
return mDisplayData[disp].configs[currentConfig].xdpi;
}
float HWComposer::getDpiY(int disp) const {
size_t currentConfig = mDisplayData[disp].currentConfig;
return mDisplayData[disp].configs[currentConfig].ydpi;
}
nsecs_t HWComposer::getRefreshPeriod(int disp) const {
size_t currentConfig = mDisplayData[disp].currentConfig;
return mDisplayData[disp].configs[currentConfig].refresh;
}
const Vector<HWComposer::DisplayConfig>& HWComposer::getConfigs(int disp) const {
return mDisplayData[disp].configs;
}
size_t HWComposer::getCurrentConfig(int disp) const {
return mDisplayData[disp].currentConfig;
}
void HWComposer::eventControl(int disp, int event, int enabled) {
if (uint32_t(disp)>31 || !mAllocatedDisplayIDs.hasBit(disp)) {
ALOGD("eventControl ignoring event %d on unallocated disp %d (en=%d)",
event, disp, enabled);
return;
}
if (event != EVENT_VSYNC) {
ALOGW("eventControl got unexpected event %d (disp=%d en=%d)",
event, disp, enabled);
return;
}
status_t err = NO_ERROR;
if (mHwc && !mDebugForceFakeVSync) {
// NOTE: we use our own internal lock here because we have to call
// into the HWC with the lock held, and we want to make sure
// that even if HWC blocks (which it shouldn't), it won't
// affect other threads.
Mutex::Autolock _l(mEventControlLock);
const int32_t eventBit = 1UL << event;
const int32_t newValue = enabled ? eventBit : 0;
const int32_t oldValue = mDisplayData[disp].events & eventBit;
if (newValue != oldValue) {
ATRACE_CALL();
err = mHwc->eventControl(mHwc, disp, event, enabled);
if (!err) {
int32_t& events(mDisplayData[disp].events);
events = (events & ~eventBit) | newValue;
char tag[16];
snprintf(tag, sizeof(tag), "HW_VSYNC_ON_%1u", disp);
ATRACE_INT(tag, enabled);
}
}
// error here should not happen -- not sure what we should
// do if it does.
ALOGE_IF(err, "eventControl(%d, %d) failed %s",
event, enabled, strerror(-err));
}
if (err == NO_ERROR && mVSyncThread != NULL) {
mVSyncThread->setEnabled(enabled);
}
}
status_t HWComposer::createWorkList(int32_t id, size_t numLayers) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return BAD_INDEX;
}
if (mHwc) {
DisplayData& disp(mDisplayData[id]);
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// we need space for the HWC_FRAMEBUFFER_TARGET
numLayers++;
}
if (disp.capacity < numLayers || disp.list == NULL) {
size_t size = sizeof(hwc_display_contents_1_t)
+ numLayers * sizeof(hwc_layer_1_t);
free(disp.list);
disp.list = (hwc_display_contents_1_t*)malloc(size);
disp.capacity = numLayers;
}
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
disp.framebufferTarget = &disp.list->hwLayers[numLayers - 1];
memset(disp.framebufferTarget, 0, sizeof(hwc_layer_1_t));
const DisplayConfig& currentConfig =
disp.configs[disp.currentConfig];
const hwc_rect_t r = { 0, 0,
(int) currentConfig.width, (int) currentConfig.height };
disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET;
disp.framebufferTarget->hints = 0;
disp.framebufferTarget->flags = 0;
disp.framebufferTarget->handle = disp.fbTargetHandle;
disp.framebufferTarget->transform = 0;
disp.framebufferTarget->blending = HWC_BLENDING_PREMULT;
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
disp.framebufferTarget->sourceCropf.left = 0;
disp.framebufferTarget->sourceCropf.top = 0;
disp.framebufferTarget->sourceCropf.right =
currentConfig.width;
disp.framebufferTarget->sourceCropf.bottom =
currentConfig.height;
} else {
disp.framebufferTarget->sourceCrop = r;
}
disp.framebufferTarget->displayFrame = r;
disp.framebufferTarget->visibleRegionScreen.numRects = 1;
disp.framebufferTarget->visibleRegionScreen.rects =
&disp.framebufferTarget->displayFrame;
disp.framebufferTarget->acquireFenceFd = -1;
disp.framebufferTarget->releaseFenceFd = -1;
disp.framebufferTarget->planeAlpha = 0xFF;
}
disp.list->retireFenceFd = -1;
disp.list->flags = HWC_GEOMETRY_CHANGED;
disp.list->numHwLayers = numLayers;
}
return NO_ERROR;
}
status_t HWComposer::setFramebufferTarget(int32_t id,
const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buf) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return BAD_INDEX;
}
DisplayData& disp(mDisplayData[id]);
if (!disp.framebufferTarget) {
// this should never happen, but apparently eglCreateWindowSurface()
// triggers a Surface::queueBuffer() on some
// devices (!?) -- log and ignore.
ALOGE("HWComposer: framebufferTarget is null");
return NO_ERROR;
}
int acquireFenceFd = -1;
if (acquireFence->isValid()) {
acquireFenceFd = acquireFence->dup();
}
// ALOGD("fbPost: handle=%p, fence=%d", buf->handle, acquireFenceFd);
disp.fbTargetHandle = buf->handle;
disp.framebufferTarget->handle = disp.fbTargetHandle;
disp.framebufferTarget->acquireFenceFd = acquireFenceFd;
return NO_ERROR;
}
status_t HWComposer::prepare() {
for (size_t i=0 ; i<mNumDisplays ; i++) {
DisplayData& disp(mDisplayData[i]);
if (disp.framebufferTarget) {
// make sure to reset the type to HWC_FRAMEBUFFER_TARGET
// DO NOT reset the handle field to NULL, because it's possible
// that we have nothing to redraw (eg: eglSwapBuffers() not called)
// in which case, we should continue to use the same buffer.
LOG_FATAL_IF(disp.list == NULL);
disp.framebufferTarget->compositionType = HWC_FRAMEBUFFER_TARGET;
}
if (!disp.connected && disp.list != NULL) {
ALOGW("WARNING: disp %zu: connected, non-null list, layers=%zu",
i, disp.list->numHwLayers);
}
mLists[i] = disp.list;
if (mLists[i]) {
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
mLists[i]->outbuf = disp.outbufHandle;
mLists[i]->outbufAcquireFenceFd = -1;
} else if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// garbage data to catch improper use
mLists[i]->dpy = (hwc_display_t)0xDEADBEEF;
mLists[i]->sur = (hwc_surface_t)0xDEADBEEF;
} else {
mLists[i]->dpy = EGL_NO_DISPLAY;
mLists[i]->sur = EGL_NO_SURFACE;
}
}
}
int err = mHwc->prepare(mHwc, mNumDisplays, mLists);
ALOGE_IF(err, "HWComposer: prepare failed (%s)", strerror(-err));
if (err == NO_ERROR) {
// here we're just making sure that "skip" layers are set
// to HWC_FRAMEBUFFER and we're also counting how many layers
// we have of each type.
//
// If there are no window layers, we treat the display has having FB
// composition, because SurfaceFlinger will use GLES to draw the
// wormhole region.
for (size_t i=0 ; i<mNumDisplays ; i++) {
DisplayData& disp(mDisplayData[i]);
disp.hasFbComp = false;
disp.hasOvComp = false;
if (disp.list) {
for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
hwc_layer_1_t& l = disp.list->hwLayers[i];
//ALOGD("prepare: %d, type=%d, handle=%p",
// i, l.compositionType, l.handle);
if (l.flags & HWC_SKIP_LAYER) {
l.compositionType = HWC_FRAMEBUFFER;
}
if (l.compositionType == HWC_FRAMEBUFFER) {
disp.hasFbComp = true;
}
if (l.compositionType == HWC_OVERLAY) {
disp.hasOvComp = true;
}
if (l.compositionType == HWC_CURSOR_OVERLAY) {
disp.hasOvComp = true;
}
}
if (disp.list->numHwLayers == (disp.framebufferTarget ? 1 : 0)) {
disp.hasFbComp = true;
}
} else {
disp.hasFbComp = true;
}
}
}
return (status_t)err;
}
bool HWComposer::hasHwcComposition(int32_t id) const {
if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return false;
return mDisplayData[id].hasOvComp;
}
bool HWComposer::hasGlesComposition(int32_t id) const {
if (!mHwc || uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return true;
return mDisplayData[id].hasFbComp;
}
sp<Fence> HWComposer::getAndResetReleaseFence(int32_t id) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return Fence::NO_FENCE;
int fd = INVALID_OPERATION;
if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
const DisplayData& disp(mDisplayData[id]);
if (disp.framebufferTarget) {
fd = disp.framebufferTarget->releaseFenceFd;
disp.framebufferTarget->acquireFenceFd = -1;
disp.framebufferTarget->releaseFenceFd = -1;
}
}
return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE;
}
status_t HWComposer::commit() {
int err = NO_ERROR;
if (mHwc) {
if (!hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// On version 1.0, the OpenGL ES target surface is communicated
// by the (dpy, sur) fields and we are guaranteed to have only
// a single display.
mLists[0]->dpy = eglGetCurrentDisplay();
mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW);
}
for (size_t i=VIRTUAL_DISPLAY_ID_BASE; i<mNumDisplays; i++) {
DisplayData& disp(mDisplayData[i]);
if (disp.outbufHandle) {
mLists[i]->outbuf = disp.outbufHandle;
mLists[i]->outbufAcquireFenceFd =
disp.outbufAcquireFence->dup();
}
}
err = mHwc->set(mHwc, mNumDisplays, mLists);
for (size_t i=0 ; i<mNumDisplays ; i++) {
DisplayData& disp(mDisplayData[i]);
disp.lastDisplayFence = disp.lastRetireFence;
disp.lastRetireFence = Fence::NO_FENCE;
if (disp.list) {
if (disp.list->retireFenceFd != -1) {
disp.lastRetireFence = new Fence(disp.list->retireFenceFd);
disp.list->retireFenceFd = -1;
}
disp.list->flags &= ~HWC_GEOMETRY_CHANGED;
}
}
}
return (status_t)err;
}
status_t HWComposer::setPowerMode(int disp, int mode) {
LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE);
if (mHwc) {
if (mode == HWC_POWER_MODE_OFF) {
eventControl(disp, HWC_EVENT_VSYNC, 0);
}
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
return (status_t)mHwc->setPowerMode(mHwc, disp, mode);
} else {
return (status_t)mHwc->blank(mHwc, disp,
mode == HWC_POWER_MODE_OFF ? 1 : 0);
}
}
return NO_ERROR;
}
status_t HWComposer::setActiveConfig(int disp, int mode) {
LOG_FATAL_IF(disp >= VIRTUAL_DISPLAY_ID_BASE);
DisplayData& dd(mDisplayData[disp]);
dd.currentConfig = mode;
if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
return (status_t)mHwc->setActiveConfig(mHwc, disp, mode);
} else {
LOG_FATAL_IF(mode != 0);
}
return NO_ERROR;
}
void HWComposer::disconnectDisplay(int disp) {
LOG_ALWAYS_FATAL_IF(disp < 0 || disp == HWC_DISPLAY_PRIMARY);
DisplayData& dd(mDisplayData[disp]);
free(dd.list);
dd.list = NULL;
dd.framebufferTarget = NULL; // points into dd.list
dd.fbTargetHandle = NULL;
dd.outbufHandle = NULL;
dd.lastRetireFence = Fence::NO_FENCE;
dd.lastDisplayFence = Fence::NO_FENCE;
dd.outbufAcquireFence = Fence::NO_FENCE;
// clear all the previous configs and repopulate when a new
// device is added
dd.configs.clear();
}
int HWComposer::getVisualID() const {
if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// FIXME: temporary hack until HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED
// is supported by the implementation. we can only be in this case
// if we have HWC 1.1
return HAL_PIXEL_FORMAT_RGBA_8888;
//return HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
} else {
return mFbDev->format;
}
}
bool HWComposer::supportsFramebufferTarget() const {
return (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1));
}
int HWComposer::fbPost(int32_t id,
const sp<Fence>& acquireFence, const sp<GraphicBuffer>& buffer) {
if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
return setFramebufferTarget(id, acquireFence, buffer);
} else {
acquireFence->waitForever("HWComposer::fbPost");
return mFbDev->post(mFbDev, buffer->handle);
}
}
int HWComposer::fbCompositionComplete() {
if (mHwc && hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1))
return NO_ERROR;
if (mFbDev->compositionComplete) {
return mFbDev->compositionComplete(mFbDev);
} else {
return INVALID_OPERATION;
}
}
void HWComposer::fbDump(String8& result) {
if (mFbDev && mFbDev->common.version >= 1 && mFbDev->dump) {
const size_t SIZE = 4096;
char buffer[SIZE];
mFbDev->dump(mFbDev, buffer, SIZE);
result.append(buffer);
}
}
status_t HWComposer::setOutputBuffer(int32_t id, const sp<Fence>& acquireFence,
const sp<GraphicBuffer>& buf) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return BAD_INDEX;
if (id < VIRTUAL_DISPLAY_ID_BASE)
return INVALID_OPERATION;
DisplayData& disp(mDisplayData[id]);
disp.outbufHandle = buf->handle;
disp.outbufAcquireFence = acquireFence;
return NO_ERROR;
}
sp<Fence> HWComposer::getLastRetireFence(int32_t id) const {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
return Fence::NO_FENCE;
return mDisplayData[id].lastRetireFence;
}
status_t HWComposer::setCursorPositionAsync(int32_t id, const Rect& pos)
{
if (mHwc->setCursorPositionAsync) {
return (status_t)mHwc->setCursorPositionAsync(mHwc, id, pos.left, pos.top);
}
else {
return NO_ERROR;
}
}
/*
* Helper template to implement a concrete HWCLayer
* This holds the pointer to the concrete hwc layer type
* and implements the "iterable" side of HWCLayer.
*/
template<typename CONCRETE, typename HWCTYPE>
class Iterable : public HWComposer::HWCLayer {
protected:
HWCTYPE* const mLayerList;
HWCTYPE* mCurrentLayer;
Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { }
inline HWCTYPE const * getLayer() const { return mCurrentLayer; }
inline HWCTYPE* getLayer() { return mCurrentLayer; }
virtual ~Iterable() { }
private:
// returns a copy of ourselves
virtual HWComposer::HWCLayer* dup() {
return new CONCRETE( static_cast<const CONCRETE&>(*this) );
}
virtual status_t setLayer(size_t index) {
mCurrentLayer = &mLayerList[index];
return NO_ERROR;
}
};
/*
* Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0.
* This implements the HWCLayer side of HWCIterableLayer.
*/
class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> {
struct hwc_composer_device_1* mHwc;
public:
HWCLayerVersion1(struct hwc_composer_device_1* hwc, hwc_layer_1_t* layer)
: Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer), mHwc(hwc) { }
virtual int32_t getCompositionType() const {
return getLayer()->compositionType;
}
virtual uint32_t getHints() const {
return getLayer()->hints;
}
virtual sp<Fence> getAndResetReleaseFence() {
int fd = getLayer()->releaseFenceFd;
getLayer()->releaseFenceFd = -1;
return fd >= 0 ? new Fence(fd) : Fence::NO_FENCE;
}
virtual void setAcquireFenceFd(int fenceFd) {
getLayer()->acquireFenceFd = fenceFd;
}
virtual void setPerFrameDefaultState() {
//getLayer()->compositionType = HWC_FRAMEBUFFER;
}
virtual void setPlaneAlpha(uint8_t alpha) {
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_2)) {
getLayer()->planeAlpha = alpha;
} else {
if (alpha < 0xFF) {
getLayer()->flags |= HWC_SKIP_LAYER;
}
}
}
virtual void setDefaultState() {
hwc_layer_1_t* const l = getLayer();
l->compositionType = HWC_FRAMEBUFFER;
l->hints = 0;
l->flags = HWC_SKIP_LAYER;
l->handle = 0;
l->transform = 0;
l->blending = HWC_BLENDING_NONE;
l->visibleRegionScreen.numRects = 0;
l->visibleRegionScreen.rects = NULL;
l->acquireFenceFd = -1;
l->releaseFenceFd = -1;
l->planeAlpha = 0xFF;
}
virtual void setSkip(bool skip) {
if (skip) {
getLayer()->flags |= HWC_SKIP_LAYER;
} else {
getLayer()->flags &= ~HWC_SKIP_LAYER;
}
}
virtual void setIsCursorLayerHint(bool isCursor) {
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_4)) {
if (isCursor) {
getLayer()->flags |= HWC_IS_CURSOR_LAYER;
}
else {
getLayer()->flags &= ~HWC_IS_CURSOR_LAYER;
}
}
}
virtual void setBlending(uint32_t blending) {
getLayer()->blending = blending;
}
virtual void setTransform(uint32_t transform) {
getLayer()->transform = transform;
}
virtual void setFrame(const Rect& frame) {
getLayer()->displayFrame = reinterpret_cast<hwc_rect_t const&>(frame);
}
virtual void setCrop(const FloatRect& crop) {
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
getLayer()->sourceCropf = reinterpret_cast<hwc_frect_t const&>(crop);
} else {
/*
* Since h/w composer didn't support a flot crop rect before version 1.3,
* using integer coordinates instead produces a different output from the GL code in
* Layer::drawWithOpenGL(). The difference can be large if the buffer crop to
* window size ratio is large and a window crop is defined
* (i.e.: if we scale the buffer a lot and we also crop it with a window crop).
*/
hwc_rect_t& r = getLayer()->sourceCrop;
r.left = int(ceilf(crop.left));
r.top = int(ceilf(crop.top));
r.right = int(floorf(crop.right));
r.bottom= int(floorf(crop.bottom));
}
}
virtual void setVisibleRegionScreen(const Region& reg) {
// Region::getSharedBuffer creates a reference to the underlying
// SharedBuffer of this Region, this reference is freed
// in onDisplayed()
hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
SharedBuffer const* sb = reg.getSharedBuffer(&visibleRegion.numRects);
visibleRegion.rects = reinterpret_cast<hwc_rect_t const *>(sb->data());
}
virtual void setSidebandStream(const sp<NativeHandle>& stream) {
ALOG_ASSERT(stream->handle() != NULL);
getLayer()->compositionType = HWC_SIDEBAND;
getLayer()->sidebandStream = stream->handle();
}
virtual void setBuffer(const sp<GraphicBuffer>& buffer) {
if (buffer == 0 || buffer->handle == 0) {
getLayer()->compositionType = HWC_FRAMEBUFFER;
getLayer()->flags |= HWC_SKIP_LAYER;
getLayer()->handle = 0;
} else {
if (getLayer()->compositionType == HWC_SIDEBAND) {
// If this was a sideband layer but the stream was removed, reset
// it to FRAMEBUFFER. The HWC can change it to OVERLAY in prepare.
getLayer()->compositionType = HWC_FRAMEBUFFER;
}
getLayer()->handle = buffer->handle;
}
}
virtual void onDisplayed() {
hwc_region_t& visibleRegion = getLayer()->visibleRegionScreen;
SharedBuffer const* sb = SharedBuffer::bufferFromData(visibleRegion.rects);
if (sb) {
sb->release();
// not technically needed but safer
visibleRegion.numRects = 0;
visibleRegion.rects = NULL;
}
getLayer()->acquireFenceFd = -1;
}
};
/*
* returns an iterator initialized at a given index in the layer list
*/
HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) {
if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
return LayerListIterator();
}
const DisplayData& disp(mDisplayData[id]);
if (!mHwc || !disp.list || index > disp.list->numHwLayers) {
return LayerListIterator();
}
return LayerListIterator(new HWCLayerVersion1(mHwc, disp.list->hwLayers), index);
}
/*
* returns an iterator on the beginning of the layer list
*/
HWComposer::LayerListIterator HWComposer::begin(int32_t id) {
return getLayerIterator(id, 0);
}
/*
* returns an iterator on the end of the layer list
*/
HWComposer::LayerListIterator HWComposer::end(int32_t id) {
size_t numLayers = 0;
if (uint32_t(id) <= 31 && mAllocatedDisplayIDs.hasBit(id)) {
const DisplayData& disp(mDisplayData[id]);
if (mHwc && disp.list) {
numLayers = disp.list->numHwLayers;
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_1)) {
// with HWC 1.1, the last layer is always the HWC_FRAMEBUFFER_TARGET,
// which we ignore when iterating through the layer list.
ALOGE_IF(!numLayers, "mDisplayData[%d].list->numHwLayers is 0", id);
if (numLayers) {
numLayers--;
}
}
}
}
return getLayerIterator(id, numLayers);
}
// Converts a PixelFormat to a human-readable string. Max 11 chars.
// (Could use a table of prefab String8 objects.)
static String8 getFormatStr(PixelFormat format) {
switch (format) {
case PIXEL_FORMAT_RGBA_8888: return String8("RGBA_8888");
case PIXEL_FORMAT_RGBX_8888: return String8("RGBx_8888");
case PIXEL_FORMAT_RGB_888: return String8("RGB_888");
case PIXEL_FORMAT_RGB_565: return String8("RGB_565");
case PIXEL_FORMAT_BGRA_8888: return String8("BGRA_8888");
case PIXEL_FORMAT_sRGB_A_8888: return String8("sRGB_A_8888");
case PIXEL_FORMAT_sRGB_X_8888: return String8("sRGB_x_8888");
case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
return String8("ImplDef");
default:
String8 result;
result.appendFormat("? %08x", format);
return result;
}
}
void HWComposer::dump(String8& result) const {
if (mHwc) {
result.appendFormat("Hardware Composer state (version %08x):\n", hwcApiVersion(mHwc));
result.appendFormat(" mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync);
for (size_t i=0 ; i<mNumDisplays ; i++) {
const DisplayData& disp(mDisplayData[i]);
if (!disp.connected)
continue;
const Vector< sp<Layer> >& visibleLayersSortedByZ =
mFlinger->getLayerSortedByZForHwcDisplay(i);
result.appendFormat(" Display[%zd] configurations (* current):\n", i);
for (size_t c = 0; c < disp.configs.size(); ++c) {
const DisplayConfig& config(disp.configs[c]);
result.appendFormat(" %s%zd: %ux%u, xdpi=%f, ydpi=%f, refresh=%" PRId64 "\n",
c == disp.currentConfig ? "* " : "", c, config.width, config.height,
config.xdpi, config.ydpi, config.refresh);
}
if (disp.list) {
result.appendFormat(
" numHwLayers=%zu, flags=%08x\n",
disp.list->numHwLayers, disp.list->flags);
result.append(
" type | handle | hint | flag | tr | blnd | format | source crop (l,t,r,b) | frame | name \n"
"-----------+----------+------+------+----+------+-------------+--------------------------------+------------------------+------\n");
// " _________ | ________ | ____ | ____ | __ | ____ | ___________ |_____._,_____._,_____._,_____._ |_____,_____,_____,_____ | ___...
for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
const hwc_layer_1_t&l = disp.list->hwLayers[i];
int32_t format = -1;
String8 name("unknown");
if (i < visibleLayersSortedByZ.size()) {
const sp<Layer>& layer(visibleLayersSortedByZ[i]);
const sp<GraphicBuffer>& buffer(
layer->getActiveBuffer());
if (buffer != NULL) {
format = buffer->getPixelFormat();
}
name = layer->getName();
}
int type = l.compositionType;
if (type == HWC_FRAMEBUFFER_TARGET) {
name = "HWC_FRAMEBUFFER_TARGET";
format = disp.format;
}
static char const* compositionTypeName[] = {
"GLES",
"HWC",
"BKGND",
"FB TARGET",
"SIDEBAND",
"HWC_CURSOR",
"UNKNOWN"};
if (type >= NELEM(compositionTypeName))
type = NELEM(compositionTypeName) - 1;
String8 formatStr = getFormatStr(format);
if (hwcHasApiVersion(mHwc, HWC_DEVICE_API_VERSION_1_3)) {
result.appendFormat(
" %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7.1f,%7.1f,%7.1f,%7.1f |%5d,%5d,%5d,%5d | %s\n",
compositionTypeName[type],
intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(),
l.sourceCropf.left, l.sourceCropf.top, l.sourceCropf.right, l.sourceCropf.bottom,
l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
name.string());
} else {
result.appendFormat(
" %9s | %08" PRIxPTR " | %04x | %04x | %02x | %04x | %-11s |%7d,%7d,%7d,%7d |%5d,%5d,%5d,%5d | %s\n",
compositionTypeName[type],
intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, formatStr.string(),
l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
name.string());
}
}
}
}
}
if (mHwc && mHwc->dump) {
const size_t SIZE = 4096;
char buffer[SIZE];
mHwc->dump(mHwc, buffer, SIZE);
result.append(buffer);
}
}
// ---------------------------------------------------------------------------
HWComposer::VSyncThread::VSyncThread(HWComposer& hwc)
: mHwc(hwc), mEnabled(false),
mNextFakeVSync(0),
mRefreshPeriod(hwc.getRefreshPeriod(HWC_DISPLAY_PRIMARY))
{
}
void HWComposer::VSyncThread::setEnabled(bool enabled) {
Mutex::Autolock _l(mLock);
if (mEnabled != enabled) {
mEnabled = enabled;
mCondition.signal();
}
}
void HWComposer::VSyncThread::onFirstRef() {
run("VSyncThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE);
}
bool HWComposer::VSyncThread::threadLoop() {
{ // scope for lock
Mutex::Autolock _l(mLock);
while (!mEnabled) {
mCondition.wait(mLock);
}
}
const nsecs_t period = mRefreshPeriod;
const nsecs_t now = systemTime(CLOCK_MONOTONIC);
nsecs_t next_vsync = mNextFakeVSync;
nsecs_t sleep = next_vsync - now;
if (sleep < 0) {
// we missed, find where the next vsync should be
sleep = (period - ((now - next_vsync) % period));
next_vsync = now + sleep;
}
mNextFakeVSync = next_vsync + period;
struct timespec spec;
spec.tv_sec = next_vsync / 1000000000;
spec.tv_nsec = next_vsync % 1000000000;
int err;
do {
err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL);
} while (err<0 && errno == EINTR);
if (err == 0) {
mHwc.mEventHandler.onVSyncReceived(0, next_vsync);
}
return true;
}
HWComposer::DisplayData::DisplayData()
: configs(),
currentConfig(0),
format(HAL_PIXEL_FORMAT_RGBA_8888),
connected(false),
hasFbComp(false), hasOvComp(false),
capacity(0), list(NULL),
framebufferTarget(NULL), fbTargetHandle(0),
lastRetireFence(Fence::NO_FENCE), lastDisplayFence(Fence::NO_FENCE),
outbufHandle(NULL), outbufAcquireFence(Fence::NO_FENCE),
events(0)
{}
HWComposer::DisplayData::~DisplayData() {
free(list);
}
// ---------------------------------------------------------------------------
}; // namespace android
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