3368d08ed5
When Dynamic Resolution Change (DRC) is triggered in the WiFi display
stack, it results in a PAUSE and a RESUME event. During DRC, the
dimensions of the framebuffer are changed. To support DRC we need to:
1. Check if a RESUME event is the result of a valid DRC event
2. Reconfigure the display's attributes to reflect resolution change
3. Enable MDP downscaling when necessary (Valid DRC cases)
Change-Id: Idc3cbc94de99a4a7299e2f6b26c3e35937c1d6c8
179 lines
6.0 KiB
C++
179 lines
6.0 KiB
C++
/*
|
|
* Copyright (c) 2013 The Linux Foundation. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
* * Neither the name of The Linux Foundation. nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
|
|
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#define DEBUG 0
|
|
#include <ctype.h>
|
|
#include <fcntl.h>
|
|
#include <media/IAudioPolicyService.h>
|
|
#include <media/AudioSystem.h>
|
|
#include <utils/threads.h>
|
|
#include <utils/Errors.h>
|
|
#include <utils/Log.h>
|
|
|
|
#include <linux/msm_mdp.h>
|
|
#include <linux/fb.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/poll.h>
|
|
#include <sys/resource.h>
|
|
#include <cutils/properties.h>
|
|
#include "hwc_utils.h"
|
|
#include "virtual.h"
|
|
#include "overlayUtils.h"
|
|
#include "overlay.h"
|
|
#include "mdp_version.h"
|
|
|
|
using namespace android;
|
|
|
|
namespace qhwc {
|
|
|
|
#define MAX_SYSFS_FILE_PATH 255
|
|
|
|
int VirtualDisplay::configure() {
|
|
if(!openFrameBuffer())
|
|
return -1;
|
|
|
|
if(ioctl(mFd, FBIOGET_VSCREENINFO, &mVInfo) < 0) {
|
|
ALOGD("%s: FBIOGET_VSCREENINFO failed with %s", __FUNCTION__,
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
setAttributes();
|
|
return 0;
|
|
}
|
|
|
|
void VirtualDisplay::getAttributes(int& width, int& height) {
|
|
width = mVInfo.xres;
|
|
height = mVInfo.yres;
|
|
}
|
|
|
|
int VirtualDisplay::teardown() {
|
|
closeFrameBuffer();
|
|
memset(&mVInfo, 0, sizeof(mVInfo));
|
|
// Reset the resolution when we close the fb for this device. We need
|
|
// this to distinguish between an ONLINE and RESUME event.
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].xres = 0;
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].yres = 0;
|
|
return 0;
|
|
}
|
|
|
|
VirtualDisplay::VirtualDisplay(hwc_context_t* ctx):mFd(-1),
|
|
mHwcContext(ctx)
|
|
{
|
|
memset(&mVInfo, 0, sizeof(mVInfo));
|
|
}
|
|
|
|
VirtualDisplay::~VirtualDisplay()
|
|
{
|
|
closeFrameBuffer();
|
|
}
|
|
|
|
void VirtualDisplay::setAttributes() {
|
|
if(mHwcContext) {
|
|
unsigned int &w = mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].xres;
|
|
unsigned int &h = mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].yres;
|
|
|
|
// Always set dpyAttr res to mVInfo res, only on an ONLINE event. Keep
|
|
// the original configuration to cater for DRC initiated RESUME events
|
|
if(w == 0 || h == 0){
|
|
w = mVInfo.xres;
|
|
h = mVInfo.yres;
|
|
}
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].mDownScaleMode = false;
|
|
|
|
if(!qdutils::MDPVersion::getInstance().is8x26()) {
|
|
uint32_t priW = mHwcContext->dpyAttr[HWC_DISPLAY_PRIMARY].xres;
|
|
uint32_t priH = mHwcContext->dpyAttr[HWC_DISPLAY_PRIMARY].yres;
|
|
|
|
// Find the maximum resolution between primary and virtual
|
|
uint32_t maxArea = max((w * h), (priW * priH));
|
|
|
|
// If primary resolution is more than the wfd resolution
|
|
// configure dpy attr to primary resolution and set
|
|
// downscale mode.
|
|
// DRC is only valid when the original resolution on the WiFi
|
|
// display is greater than the new resolution in mVInfo.
|
|
if(maxArea > (mVInfo.xres * mVInfo.yres)) {
|
|
if(maxArea == (priW * priH)) {
|
|
// Here we account for the case when primary resolution is
|
|
// greater than that of the WiFi display
|
|
w = priW;
|
|
h = priH;
|
|
// WFD is always in landscape, so always assign the higher
|
|
// dimension to wfd's xres
|
|
if(priH > priW) {
|
|
w = priH;
|
|
h = priW;
|
|
}
|
|
}
|
|
// Set External Display MDP Downscale mode indicator
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].mDownScaleMode = true;
|
|
}
|
|
}
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].vsync_period =
|
|
1000000000l /60;
|
|
ALOGD_IF(DEBUG,"%s: Setting Virtual Attr: res(%d x %d)",__FUNCTION__,
|
|
mVInfo.xres, mVInfo.yres);
|
|
}
|
|
}
|
|
|
|
bool VirtualDisplay::openFrameBuffer()
|
|
{
|
|
if (mFd == -1) {
|
|
int fbNum = overlay::Overlay::getInstance()->
|
|
getFbForDpy(HWC_DISPLAY_VIRTUAL);
|
|
|
|
char strDevPath[MAX_SYSFS_FILE_PATH];
|
|
sprintf(strDevPath,"/dev/graphics/fb%d", fbNum);
|
|
|
|
mFd = open(strDevPath, O_RDWR);
|
|
if(mFd < 0) {
|
|
ALOGE("%s: Unable to open %s ", __FUNCTION__,strDevPath);
|
|
return -1;
|
|
}
|
|
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].fd = mFd;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
bool VirtualDisplay::closeFrameBuffer()
|
|
{
|
|
if(mFd >= 0) {
|
|
if(close(mFd) < 0 ) {
|
|
ALOGE("%s: Unable to close FD(%d)", __FUNCTION__, mFd);
|
|
return -1;
|
|
}
|
|
mFd = -1;
|
|
mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].fd = mFd;
|
|
}
|
|
return 1;
|
|
}
|
|
};
|