android/android_hardware_qcom_display
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android_hardware_qcom_display/libgralloc/framebuffer.cpp
Naseer Ahmed 8a47ca6142 display: Enable triple framebuffers 
Change-Id: I323c10b939277477f724c2d0a20f9c6da4899481
2012-07-10 12:11:20 -07:00

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/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2010-2012 Code Aurora Forum. All rights reserved.
*
* 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 <sys/mman.h>
#include <cutils/log.h>
#include <cutils/properties.h>
#include <dlfcn.h>
#include <hardware/hardware.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <string.h>
#include <stdlib.h>
#include <pthread.h>
#include <cutils/atomic.h>
#include <linux/fb.h>
#include <linux/msm_mdp.h>
#include <GLES/gl.h>
#include "gralloc_priv.h"
#include "fb_priv.h"
#include "gr.h"
#include <cutils/properties.h>
#include <profiler.h>
#include "overlay.h"
namespace ovutils = overlay::utils;
#define EVEN_OUT(x) if (x & 0x0001) {x--;}
/** min of int a, b */
static inline int min(int a, int b) {
return (a<b) ? a : b;
}
/** max of int a, b */
static inline int max(int a, int b) {
return (a>b) ? a : b;
}
enum {
PAGE_FLIP = 0x00000001,
LOCKED = 0x00000002
};
struct fb_context_t {
framebuffer_device_t device;
};
static int fb_setSwapInterval(struct framebuffer_device_t* dev,
int interval)
{
//XXX: Get the value here and implement along with
//single vsync in HWC
char pval[PROPERTY_VALUE_MAX];
property_get("debug.egl.swapinterval", pval, "-1");
int property_interval = atoi(pval);
if (property_interval >= 0)
interval = property_interval;
fb_context_t* ctx = (fb_context_t*)dev;
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval)
return -EINVAL;
m->swapInterval = interval;
return 0;
}
static int fb_setUpdateRect(struct framebuffer_device_t* dev,
int l, int t, int w, int h)
{
if (((w|h) <= 0) || ((l|t)<0))
return -EINVAL;
fb_context_t* ctx = (fb_context_t*)dev;
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
m->info.reserved[0] = 0x54445055; // "UPDT";
m->info.reserved[1] = (uint16_t)l | ((uint32_t)t << 16);
m->info.reserved[2] = (uint16_t)(l+w) | ((uint32_t)(t+h) << 16);
return 0;
}
#if defined(HDMI_DUAL_DISPLAY)
static int closeHDMIChannel(private_module_t* m)
{
// XXX - when enabling HDMI
#if 0
Overlay* pTemp = m->pobjOverlay;
if(pTemp != NULL)
pTemp->closeChannel();
#endif
return 0;
}
// XXX - Complete when enabling HDMI
#if 0
static void getSecondaryDisplayDestinationInfo(private_module_t* m, overlay_rect&
rect, int& orientation)
{
Overlay* pTemp = m->pobjOverlay;
int width = pTemp->getFBWidth();
int height = pTemp->getFBHeight();
int fbwidth = m->info.xres, fbheight = m->info.yres;
rect.x = 0; rect.y = 0;
rect.w = width; rect.h = height;
int rot = m->orientation;
switch(rot) {
// ROT_0
case 0:
// ROT_180
case HAL_TRANSFORM_ROT_180:
pTemp->getAspectRatioPosition(fbwidth, fbheight,
&rect);
if(rot == HAL_TRANSFORM_ROT_180)
orientation = HAL_TRANSFORM_ROT_180;
else
orientation = 0;
break;
// ROT_90
case HAL_TRANSFORM_ROT_90:
// ROT_270
case HAL_TRANSFORM_ROT_270:
//Calculate the Aspectratio for the UI
//in the landscape mode
//Width and height will be swapped as there
//is rotation
pTemp->getAspectRatioPosition(fbheight, fbwidth,
&rect);
if(rot == HAL_TRANSFORM_ROT_90)
orientation = HAL_TRANSFORM_ROT_270;
else if(rot == HAL_TRANSFORM_ROT_270)
orientation = HAL_TRANSFORM_ROT_90;
break;
}
return;
}
#endif
/* Determine overlay state based on whether hardware supports true UI
mirroring and whether video is playing or not */
static ovutils::eOverlayState getOverlayState(struct private_module_t* module)
{
overlay2::Overlay& ov = *(Overlay::getInstance());
// Default to existing state
ovutils::eOverlayState state = ov.getState();
// Sanity check
if (!module) {
ALOGE("%s: NULL module", __FUNCTION__);
return state;
}
// Check if video is playing or not
if (module->videoOverlay) {
// Video is playing, check if hardware supports true UI mirroring
if (module->trueMirrorSupport) {
// True UI mirroring is supported by hardware
if (ov.getState() == ovutils::OV_2D_VIDEO_ON_PANEL) {
// Currently playing 2D video
state = ovutils::OV_2D_TRUE_UI_MIRROR;
} else if (ov.getState() == ovutils::OV_3D_VIDEO_ON_2D_PANEL) {
// Currently playing M3D video
// FIXME: Support M3D true UI mirroring
state = ovutils::OV_3D_VIDEO_ON_2D_PANEL_2D_TV;
}
} else {
// True UI mirroring is not supported by hardware
if (ov.getState() == ovutils::OV_2D_VIDEO_ON_PANEL) {
// Currently playing 2D video
state = ovutils::OV_2D_VIDEO_ON_PANEL_TV;
} else if (ov.getState() == ovutils::OV_3D_VIDEO_ON_2D_PANEL) {
// Currently playing M3D video
state = ovutils::OV_3D_VIDEO_ON_2D_PANEL_2D_TV;
}
}
} else {
// Video is not playing, true UI mirroring support is irrelevant
state = ovutils::OV_UI_MIRROR;
}
return state;
}
/* Set overlay state */
static void setOverlayState(ovutils::eOverlayState state)
{
overlay2::Overlay& ov = *(Overlay::getInstance());
ov.setState(state);
}
static void *hdmi_ui_loop(void *ptr)
{
private_module_t* m = reinterpret_cast<private_module_t*>(ptr);
while (1) {
pthread_mutex_lock(&m->overlayLock);
while(!(m->hdmiStateChanged))
pthread_cond_wait(&(m->overlayPost), &(m->overlayLock));
m->hdmiStateChanged = false;
if (m->exitHDMIUILoop) {
pthread_mutex_unlock(&m->overlayLock);
return NULL;
}
// No need to mirror UI if HDMI is not on
if (!m->enableHDMIOutput) {
ALOGE_IF(FB_DEBUG, "%s: hdmi not ON", __FUNCTION__);
pthread_mutex_unlock(&m->overlayLock);
continue;
}
overlay2::OverlayMgr* ovMgr =
overlay2::OverlayMgrSingleton::getOverlayMgr();
overlay2::Overlay& ov = ovMgr->ov();
// Set overlay state
ovutils::eOverlayState state = getOverlayState(m);
setOverlayState(state);
// Determine the RGB pipe for UI depending on the state
ovutils::eDest dest = ovutils::OV_PIPE_ALL;
if (state == ovutils::OV_2D_TRUE_UI_MIRROR) {
// True UI mirroring state: external RGB pipe is OV_PIPE2
dest = ovutils::OV_PIPE2;
} else if (state == ovutils::OV_UI_MIRROR) {
// UI-only mirroring state: external RGB pipe is OV_PIPE0
dest = ovutils::OV_PIPE0;
} else {
// No UI in this case
pthread_mutex_unlock(&m->overlayLock);
continue;
}
if (m->hdmiMirroringState == HDMI_UI_MIRRORING) {
int alignedW = ALIGN(m->info.xres, 32);
private_handle_t const* hnd =
reinterpret_cast<private_handle_t const*>(m->framebuffer);
unsigned int width = alignedW;
unsigned int height = hnd->height;
unsigned int format = hnd->format;
unsigned int size = hnd->size/m->numBuffers;
ovutils::eMdpFlags mdpFlags = ovutils::OV_MDP_FLAGS_NONE;
// External display connected during secure video playback
// Open secure UI session
// NOTE: when external display is already connected and then secure
// playback is started, we dont have to do anything
if (m->secureVideoOverlay) {
ovutils::setMdpFlags(mdpFlags, ovutils::OV_MDP_SECURE_OVERLAY_SESSION);
}
ovutils::Whf whf(width, height, format, size);
ovutils::PipeArgs parg(mdpFlags,
ovutils::OVERLAY_TRANSFORM_0,
whf,
ovutils::WAIT,
ovutils::ZORDER_0,
ovutils::IS_FG_OFF,
ovutils::ROT_FLAG_ENABLED);
ovutils::PipeArgs pargs[ovutils::MAX_PIPES] = { parg, parg, parg };
bool ret = ov.setSource(pargs, dest);
if (!ret) {
ALOGE("%s setSource failed", __FUNCTION__);
}
// we need to communicate m->orientation that will get some
// modifications within setParameter func.
// FIXME that is ugly.
const ovutils::Params prms (ovutils::OVERLAY_TRANSFORM_UI,
m->orientation);
ov.setParameter(prms, dest);
if (!ret) {
ALOGE("%s setParameter failed transform", __FUNCTION__);
}
// x,y,w,h
ovutils::Dim dcrop(0, 0, m->info.xres, m->info.yres);
ov.setMemoryId(m->framebuffer->fd, dest);
ret = ov.setCrop(dcrop, dest);
if (!ret) {
ALOGE("%s setCrop failed", __FUNCTION__);
}
ovutils::Dim pdim (m->info.xres,
m->info.yres,
0,
0,
m->orientation);
ret = ov.setPosition(pdim, dest);
if (!ret) {
ALOGE("%s setPosition failed", __FUNCTION__);
}
if (!ov.commit(dest)) {
ALOGE("%s commit fails", __FUNCTION__);
}
ret = ov.queueBuffer(m->currentOffset, dest);
if (!ret) {
ALOGE("%s queueBuffer failed", __FUNCTION__);
}
} else {
setOverlayState(ovutils::OV_CLOSED);
}
pthread_mutex_unlock(&m->overlayLock);
}
return NULL;
}
static int fb_videoOverlayStarted(struct framebuffer_device_t* dev, int started)
{
ALOGE_IF(FB_DEBUG, "%s started=%d", __FUNCTION__, started);
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
pthread_mutex_lock(&m->overlayLock);
if(started != m->videoOverlay) {
m->videoOverlay = started;
m->hdmiStateChanged = true;
if (!m->trueMirrorSupport) {
if (started) {
m->hdmiMirroringState = HDMI_NO_MIRRORING;
ovutils::eOverlayState state = getOverlayState(m);
setOverlayState(state);
} else if (m->enableHDMIOutput)
m->hdmiMirroringState = HDMI_UI_MIRRORING;
} else {
if (m->videoOverlay == VIDEO_3D_OVERLAY_STARTED) {
ALOGE_IF(FB_DEBUG, "3D Video Started, stop mirroring!");
m->hdmiMirroringState = HDMI_NO_MIRRORING;
ovutils::eOverlayState state = getOverlayState(m);
setOverlayState(state);
}
else if (m->enableHDMIOutput) {
m->hdmiMirroringState = HDMI_UI_MIRRORING;
}
}
}
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
static int fb_enableHDMIOutput(struct framebuffer_device_t* dev, int externaltype)
{
ALOGE_IF(FB_DEBUG, "%s externaltype=%d", __FUNCTION__, externaltype);
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
pthread_mutex_lock(&m->overlayLock);
//Check if true mirroring can be supported
m->trueMirrorSupport = ovutils::FrameBufferInfo::getInstance()->supportTrueMirroring();
m->enableHDMIOutput = externaltype;
if(externaltype) {
if (m->trueMirrorSupport) {
m->hdmiMirroringState = HDMI_UI_MIRRORING;
} else {
if(!m->videoOverlay)
m->hdmiMirroringState = HDMI_UI_MIRRORING;
}
} else if (!externaltype) {
// Either HDMI is disconnected or suspend occurred
m->hdmiMirroringState = HDMI_NO_MIRRORING;
ovutils::eOverlayState state = getOverlayState(m);
setOverlayState(state);
}
m->hdmiStateChanged = true;
pthread_cond_signal(&(m->overlayPost));
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
static int fb_orientationChanged(struct framebuffer_device_t* dev, int orientation)
{
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
pthread_mutex_lock(&m->overlayLock);
neworientation = orientation;
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
static int handle_open_secure_start(private_module_t* m) {
pthread_mutex_lock(&m->overlayLock);
m->hdmiMirroringState = HDMI_NO_MIRRORING;
m->secureVideoOverlay = true;
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
static int handle_open_secure_end(private_module_t* m) {
pthread_mutex_lock(&m->overlayLock);
if (m->enableHDMIOutput) {
if (m->trueMirrorSupport) {
m->hdmiMirroringState = HDMI_UI_MIRRORING;
} else if(!m->videoOverlay) {
m->hdmiMirroringState = HDMI_UI_MIRRORING;
}
m->hdmiStateChanged = true;
pthread_cond_signal(&(m->overlayPost));
}
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
static int handle_close_secure_start(private_module_t* m) {
pthread_mutex_lock(&m->overlayLock);
m->hdmiMirroringState = HDMI_NO_MIRRORING;
m->secureVideoOverlay = false;
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
static int handle_close_secure_end(private_module_t* m) {
pthread_mutex_lock(&m->overlayLock);
if (m->enableHDMIOutput) {
if (m->trueMirrorSupport) {
m->hdmiMirroringState = HDMI_UI_MIRRORING;
} else if(!m->videoOverlay) {
m->hdmiMirroringState = HDMI_UI_MIRRORING;
}
m->hdmiStateChanged = true;
pthread_cond_signal(&(m->overlayPost));
}
pthread_mutex_unlock(&m->overlayLock);
return 0;
}
#endif
/* fb_perform - used to add custom event and handle them in fb HAL
* Used for external display related functions as of now
*/
static int fb_perform(struct framebuffer_device_t* dev, int event, int value)
{
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
switch(event) {
#if defined(HDMI_DUAL_DISPLAY)
case EVENT_EXTERNAL_DISPLAY:
fb_enableHDMIOutput(dev, value);
break;
case EVENT_VIDEO_OVERLAY:
fb_videoOverlayStarted(dev, value);
break;
case EVENT_ORIENTATION_CHANGE:
fb_orientationChanged(dev, value);
break;
case EVENT_OVERLAY_STATE_CHANGE:
if (value == OVERLAY_STATE_CHANGE_START) {
// When state change starts, get a lock on overlay
pthread_mutex_lock(&m->overlayLock);
} else if (value == OVERLAY_STATE_CHANGE_END) {
// When state change is complete, unlock overlay
pthread_mutex_unlock(&m->overlayLock);
}
break;
case EVENT_OPEN_SECURE_START:
handle_open_secure_start(m);
break;
case EVENT_OPEN_SECURE_END:
handle_open_secure_end(m);
break;
case EVENT_CLOSE_SECURE_START:
handle_close_secure_start(m);
break;
case EVENT_CLOSE_SECURE_END:
handle_close_secure_end(m);
break;
#endif
default:
ALOGE("In %s: UNKNOWN Event = %d!!!", __FUNCTION__, event);
break;
}
return 0;
}
static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer)
{
if (private_handle_t::validate(buffer) < 0)
return -EINVAL;
fb_context_t* ctx = (fb_context_t*)dev;
private_handle_t const* hnd =
reinterpret_cast<private_handle_t const*>(buffer);
private_module_t* m =
reinterpret_cast<private_module_t*>(dev->common.module);
if (hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
m->base.lock(&m->base, buffer,
PRIV_USAGE_LOCKED_FOR_POST,
0, 0, m->info.xres, m->info.yres, NULL);
if (m->currentBuffer) {
m->base.unlock(&m->base, m->currentBuffer);
m->currentBuffer = 0;
}
const size_t offset = hnd->base - m->framebuffer->base;
m->info.activate = FB_ACTIVATE_VBL;
m->info.yoffset = offset / m->finfo.line_length;
if (ioctl(m->framebuffer->fd, FBIOPUT_VSCREENINFO, &m->info) == -1) {
ALOGE("FBIOPUT_VSCREENINFO failed");
m->base.unlock(&m->base, buffer);
return -errno;
}
CALC_FPS();
m->currentBuffer = buffer;
}
return 0;
}
static int fb_compositionComplete(struct framebuffer_device_t* dev)
{
// TODO: Properly implement composition complete callback
glFinish();
return 0;
}
int mapFrameBufferLocked(struct private_module_t* module)
{
// already initialized...
if (module->framebuffer) {
return 0;
}
char const * const device_template[] = {
"/dev/graphics/fb%u",
"/dev/fb%u",
0 };
int fd = -1;
int i=0;
char name[64];
char property[PROPERTY_VALUE_MAX];
while ((fd==-1) && device_template[i]) {
snprintf(name, 64, device_template[i], 0);
fd = open(name, O_RDWR, 0);
i++;
}
if (fd < 0)
return -errno;
struct fb_fix_screeninfo finfo;
if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1)
return -errno;
struct fb_var_screeninfo info;
if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1)
return -errno;
info.reserved[0] = 0;
info.reserved[1] = 0;
info.reserved[2] = 0;
info.xoffset = 0;
info.yoffset = 0;
info.activate = FB_ACTIVATE_NOW;
/* Interpretation of offset for color fields: All offsets are from the right,
* inside a "pixel" value, which is exactly 'bits_per_pixel' wide (means: you
* can use the offset as right argument to <<). A pixel afterwards is a bit
* stream and is written to video memory as that unmodified. This implies
* big-endian byte order if bits_per_pixel is greater than 8.
*/
if(info.bits_per_pixel == 32) {
/*
* Explicitly request RGBA_8888
*/
info.bits_per_pixel = 32;
info.red.offset = 24;
info.red.length = 8;
info.green.offset = 16;
info.green.length = 8;
info.blue.offset = 8;
info.blue.length = 8;
info.transp.offset = 0;
info.transp.length = 8;
/* Note: the GL driver does not have a r=8 g=8 b=8 a=0 config, so if we do
* not use the MDP for composition (i.e. hw composition == 0), ask for
* RGBA instead of RGBX. */
if (property_get("debug.sf.hw", property, NULL) > 0 && atoi(property) == 0)
module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888;
else if(property_get("debug.composition.type", property, NULL) > 0 &&
(strncmp(property, "mdp", 3) == 0))
module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888;
else
module->fbFormat = HAL_PIXEL_FORMAT_RGBA_8888;
} else {
/*
* Explicitly request 5/6/5
*/
info.bits_per_pixel = 16;
info.red.offset = 11;
info.red.length = 5;
info.green.offset = 5;
info.green.length = 6;
info.blue.offset = 0;
info.blue.length = 5;
info.transp.offset = 0;
info.transp.length = 0;
module->fbFormat = HAL_PIXEL_FORMAT_RGB_565;
}
//adreno needs 4k aligned offsets. Max hole size is 4096-1
int size = roundUpToPageSize(info.yres * info.xres * (info.bits_per_pixel/8));
/*
* Request NUM_BUFFERS screens (at least 2 for page flipping)
*/
int numberOfBuffers = (int)(finfo.smem_len/size);
ALOGV("num supported framebuffers in kernel = %d", numberOfBuffers);
if (property_get("debug.gr.numframebuffers", property, NULL) > 0) {
int num = atoi(property);
if ((num >= NUM_FRAMEBUFFERS_MIN) && (num <= NUM_FRAMEBUFFERS_MAX)) {
numberOfBuffers = num;
}
}
if (numberOfBuffers > NUM_FRAMEBUFFERS_MAX)
numberOfBuffers = NUM_FRAMEBUFFERS_MAX;
ALOGV("We support %d buffers", numberOfBuffers);
//consider the included hole by 4k alignment
uint32_t line_length = (info.xres * info.bits_per_pixel / 8);
info.yres_virtual = (size * numberOfBuffers) / line_length;
uint32_t flags = PAGE_FLIP;
if (ioctl(fd, FBIOPUT_VSCREENINFO, &info) == -1) {
info.yres_virtual = size / line_length;
flags &= ~PAGE_FLIP;
ALOGW("FBIOPUT_VSCREENINFO failed, page flipping not supported");
}
if (info.yres_virtual < ((size * 2) / line_length) ) {
// we need at least 2 for page-flipping
info.yres_virtual = size / line_length;
flags &= ~PAGE_FLIP;
ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)",
info.yres_virtual, info.yres*2);
}
if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1)
return -errno;
if (int(info.width) <= 0 || int(info.height) <= 0) {
// the driver doesn't return that information
// default to 160 dpi
info.width = ((info.xres * 25.4f)/160.0f + 0.5f);
info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
}
float xdpi = (info.xres * 25.4f) / info.width;
float ydpi = (info.yres * 25.4f) / info.height;
//The reserved[4] field is used to store FPS by the driver.
float fps = info.reserved[4];
ALOGI("using (fd=%d)\n"
"id = %s\n"
"xres = %d px\n"
"yres = %d px\n"
"xres_virtual = %d px\n"
"yres_virtual = %d px\n"
"bpp = %d\n"
"r = %2u:%u\n"
"g = %2u:%u\n"
"b = %2u:%u\n",
fd,
finfo.id,
info.xres,
info.yres,
info.xres_virtual,
info.yres_virtual,
info.bits_per_pixel,
info.red.offset, info.red.length,
info.green.offset, info.green.length,
info.blue.offset, info.blue.length
);
ALOGI("width = %d mm (%f dpi)\n"
"height = %d mm (%f dpi)\n"
"refresh rate = %.2f Hz\n",
info.width, xdpi,
info.height, ydpi,
fps
);
if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1)
return -errno;
if (finfo.smem_len <= 0)
return -errno;
module->flags = flags;
module->info = info;
module->finfo = finfo;
module->xdpi = xdpi;
module->ydpi = ydpi;
module->fps = fps;
module->swapInterval = 1;
CALC_INIT();
/*
* map the framebuffer
*/
int err;
module->numBuffers = info.yres_virtual / info.yres;
module->bufferMask = 0;
//adreno needs page aligned offsets. Align the fbsize to pagesize.
size_t fbSize = roundUpToPageSize(finfo.line_length * info.yres)*
module->numBuffers;
module->framebuffer = new private_handle_t(fd, fbSize,
private_handle_t::PRIV_FLAGS_USES_PMEM,
BUFFER_TYPE_UI,
module->fbFormat, info.xres, info.yres);
void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (vaddr == MAP_FAILED) {
ALOGE("Error mapping the framebuffer (%s)", strerror(errno));
return -errno;
}
module->framebuffer->base = intptr_t(vaddr);
memset(vaddr, 0, fbSize);
#if defined(HDMI_DUAL_DISPLAY)
/* Overlay for HDMI*/
pthread_mutex_init(&(module->overlayLock), NULL);
pthread_cond_init(&(module->overlayPost), NULL);
module->currentOffset = 0;
module->exitHDMIUILoop = false;
module->hdmiStateChanged = false;
pthread_t hdmiUIThread;
pthread_create(&hdmiUIThread, NULL, &hdmi_ui_loop, (void *) module);
module->hdmiMirroringState = HDMI_NO_MIRRORING;
module->trueMirrorSupport = false;
#endif
return 0;
}
static int mapFrameBuffer(struct private_module_t* module)
{
pthread_mutex_lock(&module->lock);
int err = mapFrameBufferLocked(module);
pthread_mutex_unlock(&module->lock);
return err;
}
/*****************************************************************************/
static int fb_close(struct hw_device_t *dev)
{
fb_context_t* ctx = (fb_context_t*)dev;
#if defined(HDMI_DUAL_DISPLAY)
private_module_t* m = reinterpret_cast<private_module_t*>(
ctx->device.common.module);
pthread_mutex_lock(&m->overlayLock);
m->exitHDMIUILoop = true;
pthread_cond_signal(&(m->overlayPost));
pthread_mutex_unlock(&m->overlayLock);
#endif
if (ctx) {
free(ctx);
}
return 0;
}
int fb_device_open(hw_module_t const* module, const char* name,
hw_device_t** device)
{
int status = -EINVAL;
if (!strcmp(name, GRALLOC_HARDWARE_FB0)) {
alloc_device_t* gralloc_device;
status = gralloc_open(module, &gralloc_device);
if (status < 0)
return status;
/* initialize our state here */
fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev));
memset(dev, 0, sizeof(*dev));
/* initialize the procs */
dev->device.common.tag = HARDWARE_DEVICE_TAG;
dev->device.common.version = 0;
dev->device.common.module = const_cast<hw_module_t*>(module);
dev->device.common.close = fb_close;
dev->device.setSwapInterval = fb_setSwapInterval;
dev->device.post = fb_post;
dev->device.setUpdateRect = 0;
dev->device.compositionComplete = fb_compositionComplete;
private_module_t* m = (private_module_t*)module;
status = mapFrameBuffer(m);
if (status >= 0) {
int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3);
const_cast<uint32_t&>(dev->device.flags) = 0;
const_cast<uint32_t&>(dev->device.width) = m->info.xres;
const_cast<uint32_t&>(dev->device.height) = m->info.yres;
const_cast<int&>(dev->device.stride) = stride;
const_cast<int&>(dev->device.format) = m->fbFormat;
const_cast<float&>(dev->device.xdpi) = m->xdpi;
const_cast<float&>(dev->device.ydpi) = m->ydpi;
const_cast<float&>(dev->device.fps) = m->fps;
const_cast<int&>(dev->device.minSwapInterval) = PRIV_MIN_SWAP_INTERVAL;
const_cast<int&>(dev->device.maxSwapInterval) = PRIV_MAX_SWAP_INTERVAL;
const_cast<int&>(dev->device.numFramebuffers) = m->numBuffers;
if (m->finfo.reserved[0] == 0x5444 &&
m->finfo.reserved[1] == 0x5055) {
dev->device.setUpdateRect = fb_setUpdateRect;
ALOGD("UPDATE_ON_DEMAND supported");
}
*device = &dev->device.common;
}
// Close the gralloc module
gralloc_close(gralloc_device);
}
return status;
}
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