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android_hardware_qcom_display/libhwcomposer/hwcomposer.cpp

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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 <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <hardware/hardware.h>
#include <fcntl.h>
#include <errno.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <cutils/properties.h>
#include <gralloc_priv.h>
#include <hardware/hwcomposer.h>
#include <overlayLib.h>
#include <overlayLibUI.h>
#include <copybit.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <ui/android_native_buffer.h>
#include <genlock.h>
#include <qcom_ui.h>
#include <gr.h>
#include <utils/profiler.h>
#include <utils/IdleTimer.h>
/*****************************************************************************/
#define ALIGN(x, align) (((x) + ((align)-1)) & ~((align)-1))
#define LIKELY( exp ) (__builtin_expect( (exp) != 0, true ))
#define UNLIKELY( exp ) (__builtin_expect( (exp) != 0, false ))
#ifdef COMPOSITION_BYPASS
#define MAX_BYPASS_LAYERS 3
#define BYPASS_DEBUG 0
#define BYPASS_INDEX_OFFSET 4
#define DEFAULT_IDLE_TIME 2000
enum BypassState {
BYPASS_ON,
BYPASS_OFF,
BYPASS_OFF_PENDING,
};
enum BypassBufferLockState {
BYPASS_BUFFER_UNLOCKED,
BYPASS_BUFFER_LOCKED,
};
#endif
enum HWCLayerType{
HWC_SINGLE_VIDEO = 0x1,
HWC_ORIG_RESOLUTION = 0x2,
HWC_S3D_LAYER = 0x4,
HWC_STOP_UI_MIRRORING_MASK = 0xF
};
enum eHWCOverlayStatus {
HWC_OVERLAY_OPEN,
HWC_OVERLAY_PREPARE_TO_CLOSE,
HWC_OVERLAY_CLOSED
};
struct hwc_context_t {
hwc_composer_device_t device;
/* our private state goes below here */
overlay::Overlay* mOverlayLibObject;
native_handle_t *previousOverlayHandle;
native_handle_t *currentOverlayHandle;
int yuvBufferCount;
int numLayersNotUpdating;
#ifdef COMPOSITION_BYPASS
overlay::OverlayUI* mOvUI[MAX_BYPASS_LAYERS];
native_handle_t* previousBypassHandle[MAX_BYPASS_LAYERS];
BypassBufferLockState bypassBufferLockState[MAX_BYPASS_LAYERS];
int layerindex[MAX_BYPASS_LAYERS];
int nPipesUsed;
BypassState bypassState;
IdleTimer idleTimer;
bool idleTimeOut;
#endif
#if defined HDMI_DUAL_DISPLAY
external_display_type mHDMIEnabled; // Type of external display
bool pendingHDMI;
bool forceComposition; //Used to force composition on HDMI connection.
#endif
int previousLayerCount;
eHWCOverlayStatus hwcOverlayStatus;
int swapInterval;
};
static int hwc_device_open(const struct hw_module_t* module, const char* name,
struct hw_device_t** device);
static struct hw_module_methods_t hwc_module_methods = {
open: hwc_device_open
};
struct private_hwc_module_t {
hwc_module_t base;
copybit_device_t *copybitEngine;
framebuffer_device_t *fbDevice;
int compositionType;
bool isBypassEnabled; //from build.prop ro.sf.compbypass.enable
};
struct private_hwc_module_t HAL_MODULE_INFO_SYM = {
base: {
common: {
tag: HARDWARE_MODULE_TAG,
version_major: 1,
version_minor: 0,
id: HWC_HARDWARE_MODULE_ID,
name: "Hardware Composer Module",
author: "The Android Open Source Project",
methods: &hwc_module_methods,
}
},
copybitEngine: NULL,
fbDevice: NULL,
compositionType: 0,
isBypassEnabled: false,
};
//Only at this point would the compiler know all storage class sizes.
//The header has hooks which need to know those beforehand.
#include <external_display_only.h>
/*****************************************************************************/
static void dump_layer(hwc_layer_t const* l) {
LOGD("\ttype=%d, flags=%08x, handle=%p, tr=%02x, blend=%04x, {%d,%d,%d,%d}, {%d,%d,%d,%d}",
l->compositionType, l->flags, l->handle, l->transform & FINAL_TRANSFORM_MASK, l->blending,
l->sourceCrop.left,
l->sourceCrop.top,
l->sourceCrop.right,
l->sourceCrop.bottom,
l->displayFrame.left,
l->displayFrame.top,
l->displayFrame.right,
l->displayFrame.bottom);
}
static inline int min(const int& a, const int& b) {
return (a < b) ? a : b;
}
static inline int max(const int& a, const int& b) {
return (a > b) ? a : b;
}
inline void getLayerResolution(const hwc_layer_t* layer, int& width, int& height)
{
hwc_rect_t displayFrame = layer->displayFrame;
width = displayFrame.right - displayFrame.left;
height = displayFrame.bottom - displayFrame.top;
}
#ifdef COMPOSITION_BYPASS
static void timeout_handler(void *udata) {
LOGD("Comp bypass timeout_handler...");
struct hwc_context_t* ctx = (struct hwc_context_t*)(udata);
if(!ctx) {
LOGE("%s: received empty data in timer callback", __FUNCTION__);
return;
}
hwc_procs* proc = (hwc_procs*)ctx->device.reserved_proc[0];
if(!proc) {
LOGE("%s: HWC proc not registered", __FUNCTION__);
return;
}
/* Trigger SF to redraw the current frame */
ctx->idleTimeOut = true;
proc->invalidate(proc);
LOGD("Comp bypass timeout_handler...Done");
}
void setLayerbypassIndex(hwc_layer_t* layer, const int bypass_index)
{
layer->flags &= ~HWC_BYPASS_INDEX_MASK;
layer->flags |= bypass_index << BYPASS_INDEX_OFFSET;
}
int getLayerbypassIndex(hwc_layer_t* layer)
{
int byp_index = -1;
if(layer->flags & HWC_COMP_BYPASS) {
byp_index = ((layer->flags & HWC_BYPASS_INDEX_MASK) >> BYPASS_INDEX_OFFSET);
byp_index = (byp_index < MAX_BYPASS_LAYERS ? byp_index : -1 );
}
return byp_index;
}
void unlockPreviousBypassBuffers(hwc_context_t* ctx) {
// Unlock the previous bypass buffers. We can blindly unlock the buffers
// here, because buffers will be in this list only if the lock was
// successfully acquired.
for(int i = 0; i < MAX_BYPASS_LAYERS; i++) {
private_handle_t *hnd = (private_handle_t*) ctx->previousBypassHandle[i];
if (!hnd)
continue;
// Validate the handle to make sure it hasn't been deallocated.
if (private_handle_t::validate(hnd)) {
LOGE("%s: Unregistering invalid gralloc handle %p.", __FUNCTION__, hnd);
ctx->previousBypassHandle[i] = NULL;
continue;
}
// Check if the handle was locked previously
if (private_handle_t::PRIV_FLAGS_HWC_LOCK & hnd->flags) {
if (GENLOCK_FAILURE == genlock_unlock_buffer(hnd)) {
LOGE("%s: genlock_unlock_buffer failed", __FUNCTION__);
} else {
ctx->previousBypassHandle[i] = NULL;
// Reset the lock flag
hnd->flags &= ~private_handle_t::PRIV_FLAGS_HWC_LOCK;
}
}
}
}
void print_info(hwc_layer_t* layer)
{
hwc_rect_t sourceCrop = layer->sourceCrop;
hwc_rect_t displayFrame = layer->displayFrame;
int s_l = sourceCrop.left;
int s_t = sourceCrop.top;
int s_r = sourceCrop.right;
int s_b = sourceCrop.bottom;
int d_l = displayFrame.left;
int d_t = displayFrame.top;
int d_r = displayFrame.right;
int d_b = displayFrame.bottom;
LOGE_IF(BYPASS_DEBUG, "src:[%d,%d,%d,%d] (%d x %d) dst:[%d,%d,%d,%d] (%d x %d)",
s_l, s_t, s_r, s_b, (s_r - s_l), (s_b - s_t),
d_l, d_t, d_r, d_b, (d_r - d_l), (d_b - d_t));
}
//Crops source buffer against destination and FB boundaries
void calculate_crop_rects(hwc_rect_t& crop, hwc_rect_t& dst, int hw_w, int hw_h) {
int& crop_x = crop.left;
int& crop_y = 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_x = dst.left;
int& dst_y = dst.top;
int& dst_r = dst.right;
int& dst_b = dst.bottom;
int dst_w = dst.right - dst.left;
int dst_h = dst.bottom - dst.top;
if(dst_x < 0) {
float scale_x = crop_w * 1.0f / dst_w;
float diff_factor = (scale_x * abs(dst_x));
crop_x = crop_x + (int)diff_factor;
crop_w = crop_r - crop_x;
dst_x = 0;
dst_w = dst_r - dst_x;;
}
if(dst_r > hw_w) {
float scale_x = crop_w * 1.0f / dst_w;
float diff_factor = scale_x * (dst_r - hw_w);
crop_r = crop_r - diff_factor;
crop_w = crop_r - crop_x;
dst_r = hw_w;
dst_w = dst_r - dst_x;
}
if(dst_y < 0) {
float scale_y = crop_h * 1.0f / dst_h;
float diff_factor = scale_y * abs(dst_y);
crop_y = crop_y + diff_factor;
crop_h = crop_b - crop_y;
dst_y = 0;
dst_h = dst_b - dst_y;
}
if(dst_b > hw_h) {
float scale_y = crop_h * 1.0f / dst_h;
float diff_factor = scale_y * (dst_b - hw_h);
crop_b = crop_b - diff_factor;
crop_h = crop_b - crop_y;
dst_b = hw_h;
dst_h = dst_b - dst_y;
}
LOGE_IF(BYPASS_DEBUG,"crop: [%d,%d,%d,%d] dst:[%d,%d,%d,%d]",
crop_x, crop_y, crop_w, crop_h,dst_x, dst_y, dst_w, dst_h);
}
/*
* Configures pipe(s) for composition bypass
*/
static int prepareBypass(hwc_context_t *ctx, hwc_layer_t *layer,
int nPipeIndex, int vsync_wait, int isFG) {
if (ctx && ctx->mOvUI[nPipeIndex]) {
overlay::OverlayUI *ovUI = ctx->mOvUI[nPipeIndex];
private_hwc_module_t* hwcModule = reinterpret_cast<
private_hwc_module_t*>(ctx->device.common.module);
if (!hwcModule) {
LOGE("%s: NULL Module", __FUNCTION__);
return -1;
}
private_handle_t *hnd = (private_handle_t *)layer->handle;
if(!hnd) {
LOGE("%s: layer handle is NULL", __FUNCTION__);
return -1;
}
int hw_w = hwcModule->fbDevice->width;
int hw_h = hwcModule->fbDevice->height;
hwc_rect_t sourceCrop = layer->sourceCrop;
hwc_rect_t displayFrame = layer->displayFrame;
const int src_w = sourceCrop.right - sourceCrop.left;
const int src_h = sourceCrop.bottom - sourceCrop.top;
hwc_rect_t crop = sourceCrop;
int crop_w = crop.right - crop.left;
int crop_h = crop.bottom - crop.top;
hwc_rect_t dst = displayFrame;
int dst_w = dst.right - dst.left;
int dst_h = dst.bottom - dst.top;
if(hnd != NULL && (hnd->flags & private_handle_t::PRIV_FLAGS_NONCONTIGUOUS_MEM )) {
LOGE("%s: Unable to setup bypass due to non-pmem memory",__FUNCTION__);
return -1;
}
if(dst.left < 0 || dst.top < 0 || dst.right > hw_w || dst.bottom > hw_h) {
LOGE_IF(BYPASS_DEBUG,"%s: Destination has negative coordinates", __FUNCTION__);
calculate_crop_rects(crop, dst, hw_w, hw_h);
//Update calulated width and height
crop_w = crop.right - crop.left;
crop_h = crop.bottom - crop.top;
dst_w = dst.right - dst.left;
dst_h = dst.bottom - dst.top;
}
if( (dst_w > hw_w)|| (dst_h > hw_h)) {
LOGE_IF(BYPASS_DEBUG,"%s: Destination rectangle exceeds FB resolution", __FUNCTION__);
print_info(layer);
dst_w = hw_w;
dst_h = hw_h;
}
overlay_buffer_info info;
info.width = src_w;
info.height = src_h;
info.format = hnd->format;
info.size = hnd->size;
int fbnum = 0;
int orientation = layer->transform & FINAL_TRANSFORM_MASK;
const bool useVGPipe =
#ifdef NO_BYPASS_CROPPING
(nPipeIndex != (MAX_BYPASS_LAYERS - 2));
#else
(nPipeIndex != (MAX_BYPASS_LAYERS - 1));
#endif
//only last layer should wait for vsync
const bool waitForVsync = vsync_wait;
const bool isFg = isFG;
//Just to differentiate zorders for different layers
const int zorder = nPipeIndex;
ovUI->setSource(info, orientation);
ovUI->setCrop(crop.left, crop.top, crop_w, crop_h);
ovUI->setDisplayParams(fbnum, waitForVsync, isFg, zorder, useVGPipe);
ovUI->setPosition(dst.left, dst.top, dst_w, dst_h);
LOGE_IF(BYPASS_DEBUG,"%s: Bypass set: crop[%d,%d,%d,%d] dst[%d,%d,%d,%d] waitforVsync: %d \
isFg: %d zorder: %d VG = %d nPipe: %d",__FUNCTION__,
crop.left, crop.top, crop_w, crop_h,
dst.left, dst.top, dst_w, dst_h,
waitForVsync, isFg, zorder, useVGPipe, nPipeIndex );
if(ovUI->commit() != overlay::NO_ERROR) {
LOGE("%s: Overlay Commit failed", __FUNCTION__);
return -1;
}
}
return 0;
}
#ifdef NO_BYPASS_CROPPING
inline bool isLayerCropped(const hwc_layer_t* layer, int hw_w, int hw_h) {
int dst_w, dst_h;
getLayerResolution(layer, dst_w, dst_h);
hwc_rect_t sourceCrop = layer->sourceCrop;
const int src_w = sourceCrop.right - sourceCrop.left;
const int src_h = sourceCrop.bottom - sourceCrop.top;
hwc_rect_t dst = layer->displayFrame;
return dst.left < 0 || dst.top < 0 || dst.right > hw_w || dst.bottom > hw_h ||
src_w > dst_w || src_h > dst_h;
}
#endif
/*
* Checks if doing comp. bypass is possible.
* It is possible if
* 1. No MDP pipe is used
* 2. Rotation is not needed
* 3. We have atmost MAX_BYPASS_LAYERS
*/
inline static bool isBypassDoable(hwc_composer_device_t *dev, const int yuvCount,
const hwc_layer_list_t* list) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
if(!ctx) {
LOGE("%s: hwc context is NULL", __FUNCTION__);
return false;
}
//Check if enabled in build.prop
if(hwcModule->isBypassEnabled == false) {
return false;
}
if(list->numHwLayers < 1) {
return false;
}
#if defined HDMI_DUAL_DISPLAY
//Disable bypass when HDMI is enabled
if(ctx->mHDMIEnabled || ctx->pendingHDMI) {
return false;
}
#endif
if(ExtDispOnly::isModeOn()) {
return false;
}
if(ctx->idleTimeOut) {
ctx->idleTimeOut = false;
return false;
}
#ifdef NO_BYPASS_CROPPING
int hw_w = hwcModule->fbDevice->width;
int hw_h = hwcModule->fbDevice->height;
#endif
//Bypass is not efficient if rotation or asynchronous mode is needed.
for(int i = 0; i < list->numHwLayers; ++i) {
if(list->hwLayers[i].transform & FINAL_TRANSFORM_MASK) {
return false;
}
if(list->hwLayers[i].flags & HWC_LAYER_ASYNCHRONOUS) {
if (ctx->swapInterval > 0)
return false;
}
#ifdef NO_BYPASS_CROPPING
if (isLayerCropped(&(list->hwLayers[i]), hw_w, hw_h)) {
return false;
}
#endif
}
return (yuvCount == 0) && (ctx->hwcOverlayStatus == HWC_OVERLAY_CLOSED)
&& (list->numHwLayers <= MAX_BYPASS_LAYERS);
}
void setBypassLayerFlags(hwc_context_t* ctx, hwc_layer_list_t* list)
{
for(int index = 0 ; index < MAX_BYPASS_LAYERS; index++ )
{
int layer_index = ctx->layerindex[index];
if(layer_index >= 0) {
hwc_layer_t* layer = &(list->hwLayers[layer_index]);
layer->flags |= HWC_COMP_BYPASS;
layer->compositionType = HWC_USE_OVERLAY;
layer->hints |= HWC_HINT_CLEAR_FB;
}
}
if( list->numHwLayers > ctx->nPipesUsed ) {
list->flags &= ~HWC_SKIP_COMPOSITION; //Compose to FB
} else {
list->flags |= HWC_SKIP_COMPOSITION; // Dont
}
}
bool setupBypass(hwc_context_t* ctx, hwc_layer_list_t* list) {
int nPipeIndex, vsync_wait, isFG;
int numHwLayers = list->numHwLayers;
int nPipeAvailable = MAX_BYPASS_LAYERS;
for (int index = 0 ; (index < numHwLayers) && nPipeAvailable; index++) {
hwc_layer_t* layer = &(list->hwLayers[index]);
nPipeIndex = MAX_BYPASS_LAYERS - nPipeAvailable;
//Set VSYNC wait is needed only for the last pipe queued
vsync_wait = (nPipeIndex == (numHwLayers-1));
//Set isFG to true for layer with z-order zero
isFG = !index;
//Clear Bypass flags for the layer
layer->flags &= ~HWC_COMP_BYPASS;
layer->flags |= HWC_BYPASS_INDEX_MASK;
if( prepareBypass(ctx, &(list->hwLayers[index]), nPipeIndex, vsync_wait, isFG) != 0 ) {
LOGE_IF(BYPASS_DEBUG, "%s: layer %d failed to configure bypass for pipe index: %d",
__FUNCTION__, index, nPipeIndex);
return false;
} else {
ctx->layerindex[nPipeIndex] = index;
setLayerbypassIndex(layer, nPipeIndex);
nPipeAvailable--;
}
}
ctx->nPipesUsed = MAX_BYPASS_LAYERS - nPipeAvailable;
return true;
}
void unsetBypassLayerFlags(hwc_layer_list_t* list) {
if (!list)
return;
for (int index = 0 ; index < list->numHwLayers; index++) {
if(list->hwLayers[index].flags & HWC_COMP_BYPASS) {
list->hwLayers[index].flags &= ~HWC_COMP_BYPASS;
}
}
}
void unsetBypassBufferLockState(hwc_context_t* ctx) {
for (int i= 0; i< MAX_BYPASS_LAYERS; i++) {
ctx->bypassBufferLockState[i] = BYPASS_BUFFER_UNLOCKED;
}
}
void storeLockedBypassHandle(hwc_layer_list_t* list, hwc_context_t* ctx) {
if (!list)
return;
for(int index = 0; index < MAX_BYPASS_LAYERS; index++ ) {
hwc_layer_t layer = list->hwLayers[ctx->layerindex[index]];
if (layer.flags & HWC_COMP_BYPASS) {
private_handle_t *hnd = (private_handle_t*)layer.handle;
if (ctx->bypassBufferLockState[index] == BYPASS_BUFFER_LOCKED) {
ctx->previousBypassHandle[index] = (native_handle_t*)layer.handle;
hnd->flags |= private_handle_t::PRIV_FLAGS_HWC_LOCK;
} else {
ctx->previousBypassHandle[index] = NULL;
}
}
}
}
void closeExtraPipes(hwc_context_t* ctx) {
int pipes_used = ctx->nPipesUsed;
//Unused pipes must be of higher z-order
//Note that MDP on closechannel call just marks the
//pipes for closure. The pipes are actually closed
//on next VSYNC
for (int i = pipes_used ; i < MAX_BYPASS_LAYERS; i++) {
ctx->mOvUI[i]->closeChannel();
ctx->layerindex[i] = -1;
}
}
#endif //COMPOSITION_BYPASS
// Returns true if external panel is connected
static inline bool isExternalConnected(const hwc_context_t* ctx) {
#if defined HDMI_DUAL_DISPLAY
return (ctx->mHDMIEnabled != EXT_TYPE_NONE);
#endif
return false;
}
// Returns true if we have a skip layer
static inline bool isSkipLayer(const hwc_layer_t* layer) {
return (layer && (layer->flags & HWC_SKIP_LAYER));
}
// Returns true if the buffer is yuv
static inline bool isYuvBuffer(const private_handle_t* hnd) {
return (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO));
}
//Return true if buffer is marked locked
static inline bool isBufferLocked(const private_handle_t* hnd) {
return (hnd && (private_handle_t::PRIV_FLAGS_HWC_LOCK & hnd->flags));
}
static int getLayerS3DFormat (hwc_layer_t &layer) {
int s3dFormat = 0;
private_handle_t *hnd = (private_handle_t *)layer.handle;
if (hnd)
s3dFormat = FORMAT_3D_INPUT(hnd->format);
return s3dFormat;
}
//Mark layers for GPU composition but not if it is a 3D layer.
static inline void markForGPUComp(const hwc_context_t *ctx,
hwc_layer_list_t* list, const int limit) {
for(int i = 0; i < limit; i++) {
if( getLayerS3DFormat( list->hwLayers[i] ) ) {
continue;
}
else {
list->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
list->hwLayers[i].hints &= ~HWC_HINT_CLEAR_FB;
}
}
}
static int setVideoOverlayStatusInGralloc(hwc_context_t* ctx, const int value) {
#if defined HDMI_DUAL_DISPLAY
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
ctx->device.common.module);
if(!hwcModule) {
LOGE("%s: invalid params", __FUNCTION__);
return -1;
}
framebuffer_device_t *fbDev = hwcModule->fbDevice;
if (!fbDev) {
LOGE("%s: fbDev is NULL", __FUNCTION__);
return -1;
}
// Inform the gralloc about the video overlay
fbDev->perform(fbDev, EVENT_VIDEO_OVERLAY, value);
#endif
return 0;
}
static int hwc_closeOverlayChannels(hwc_context_t* ctx) {
#ifdef USE_OVERLAY
overlay::Overlay *ovLibObject = ctx->mOverlayLibObject;
if(!ovLibObject) {
LOGE("%s: invalid params", __FUNCTION__);
return -1;
}
if (HWC_OVERLAY_PREPARE_TO_CLOSE == ctx->hwcOverlayStatus) {
// Video mirroring is going on, and we do not have any layers to
// mirror directly. Close the current video channel and inform the
// gralloc to start UI mirroring
ovLibObject->closeChannel();
// Inform the gralloc that video overlay has stopped.
setVideoOverlayStatusInGralloc(ctx, VIDEO_OVERLAY_ENDED);
ctx->hwcOverlayStatus = HWC_OVERLAY_CLOSED;
}
#endif
return 0;
}
/*
* Configures mdp pipes
*/
static int prepareOverlay(hwc_context_t *ctx, hwc_layer_t *layer, const int flags) {
int ret = 0;
#ifdef COMPOSITION_BYPASS
if(ctx && (ctx->bypassState != BYPASS_OFF)) {
ctx->nPipesUsed = 0;
closeExtraPipes(ctx);
unlockPreviousBypassBuffers(ctx);
unsetBypassBufferLockState(ctx);
ctx->bypassState = BYPASS_OFF;
}
#endif
if (LIKELY(ctx && ctx->mOverlayLibObject)) {
private_hwc_module_t* hwcModule =
reinterpret_cast<private_hwc_module_t*>(ctx->device.common.module);
if (UNLIKELY(!hwcModule)) {
LOGE("prepareOverlay null module ");
return -1;
}
private_handle_t *hnd = (private_handle_t *)layer->handle;
overlay::Overlay *ovLibObject = ctx->mOverlayLibObject;
overlay_buffer_info info;
info.width = hnd->width;
info.height = hnd->height;
info.format = hnd->format;
info.size = hnd->size;
int hdmiConnected = 0;
#if defined HDMI_DUAL_DISPLAY
if(!ctx->pendingHDMI) //makes sure the UI channel is opened first
hdmiConnected = (int)ctx->mHDMIEnabled;
#endif
ret = ovLibObject->setSource(info, layer->transform,
hdmiConnected, flags);
if (!ret) {
LOGE("prepareOverlay setSource failed");
return -1;
}
ret = ovLibObject->setTransform(layer->transform);
if (!ret) {
LOGE("prepareOverlay setTransform failed transform %x",
layer->transform);
return -1;
}
hwc_rect_t sourceCrop = layer->sourceCrop;
ret = ovLibObject->setCrop(sourceCrop.left, sourceCrop.top,
(sourceCrop.right - sourceCrop.left),
(sourceCrop.bottom - sourceCrop.top));
if (!ret) {
LOGE("prepareOverlay setCrop failed");
return -1;
}
#if defined HDMI_DUAL_DISPLAY
// Send the device orientation to overlayLib
if(hwcModule) {
framebuffer_device_t *fbDev = reinterpret_cast<framebuffer_device_t*>
(hwcModule->fbDevice);
if(fbDev) {
private_module_t* m = reinterpret_cast<private_module_t*>(
fbDev->common.module);
if(m)
ovLibObject->setDeviceOrientation(m->orientation);
}
}
#endif
if (layer->flags & HWC_USE_ORIGINAL_RESOLUTION) {
framebuffer_device_t* fbDev = hwcModule->fbDevice;
ret = ovLibObject->setPosition(0, 0,
fbDev->width, fbDev->height);
} else {
hwc_rect_t displayFrame = layer->displayFrame;
ret = ovLibObject->setPosition(displayFrame.left, displayFrame.top,
(displayFrame.right - displayFrame.left),
(displayFrame.bottom - displayFrame.top));
}
if (!ret) {
LOGE("prepareOverlay setPosition failed");
return -1;
}
}
return 0;
}
void unlockPreviousOverlayBuffer(hwc_context_t* ctx)
{
private_handle_t *hnd = (private_handle_t*) ctx->previousOverlayHandle;
if (hnd) {
// Validate the handle before attempting to use it.
if (!private_handle_t::validate(hnd) && isBufferLocked(hnd)) {
if (GENLOCK_NO_ERROR == genlock_unlock_buffer(hnd)) {
//If previous is same as current, keep locked.
if(hnd != ctx->currentOverlayHandle) {
hnd->flags &= ~private_handle_t::PRIV_FLAGS_HWC_LOCK;
}
} else {
LOGE("%s: genlock_unlock_buffer failed", __FUNCTION__);
}
}
}
ctx->previousOverlayHandle = ctx->currentOverlayHandle;
ctx->currentOverlayHandle = NULL;
}
bool canSkipComposition(hwc_context_t* ctx, int yuvBufferCount, int currentLayerCount,
int numLayersNotUpdating)
{
if (!ctx) {
LOGE("canSkipComposition invalid context");
return false;
}
#if defined HDMI_DUAL_DISPLAY
if(ctx->forceComposition) {
ctx->forceComposition = false;
return false;
}
#endif
hwc_composer_device_t* dev = (hwc_composer_device_t *)(ctx);
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
if (hwcModule->compositionType == COMPOSITION_TYPE_CPU)
return false;
//Video / Camera case
if (ctx->yuvBufferCount == 1) {
//If the previousLayerCount is anything other than the current count, it
//means something changed and we need to compose atleast once to FB.
if (currentLayerCount != ctx->previousLayerCount) {
ctx->previousLayerCount = currentLayerCount;
return false;
}
// We either have only one overlay layer or we have
// all non-updating UI layers.
// We can skip the composition of the UI layers.
if ((currentLayerCount == 1) ||
((currentLayerCount - 1) == numLayersNotUpdating)) {
return true;
}
} else {
ctx->previousLayerCount = -1;
}
return false;
}
static bool canUseCopybit(const framebuffer_device_t* fbDev, const hwc_layer_list_t* list) {
if(!fbDev) {
LOGE("ERROR: %s : fb device is invalid",__func__);
return false;
}
if (!list)
return false;
int fb_w = fbDev->width;
int fb_h = fbDev->height;
/*
* Use copybit only when we need to blit
* max 2 full screen sized regions
*/
unsigned int renderArea = 0;
for(int i = 0; i < list->numHwLayers; i++ ) {
int w, h;
getLayerResolution(&list->hwLayers[i], w, h);
renderArea += w*h;
}
return (renderArea <= (2 * fb_w * fb_h));
}
static void handleHDMIStateChange(hwc_composer_device_t *dev, int externaltype) {
#if defined HDMI_DUAL_DISPLAY
hwc_context_t* ctx = (hwc_context_t*)(dev);
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
//Route the event to fbdev only if we are in default mirror mode
if(ExtDispOnly::isModeOn() == false) {
framebuffer_device_t *fbDev = hwcModule->fbDevice;
if (fbDev) {
fbDev->perform(fbDev, EVENT_EXTERNAL_DISPLAY, externaltype);
}
if(ctx && ctx->mOverlayLibObject) {
overlay::Overlay *ovLibObject = ctx->mOverlayLibObject;
if (!externaltype) {
// Close the external overlay channels if HDMI is disconnected
ovLibObject->closeExternalChannel();
}
}
}
#endif
}
/*
* Save callback functions registered to HWC
*/
static void hwc_registerProcs(struct hwc_composer_device* dev, hwc_procs_t const* procs) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
if(!ctx) {
LOGE("%s: Invalid context", __FUNCTION__);
return;
}
ctx->device.reserved_proc[0] = (void*)procs;
}
/*
* function to set the status of external display in hwc
* Just mark flags and do stuff after eglSwapBuffers
* externaltype - can be HDMI, WIFI or OFF
*/
static void hwc_enableHDMIOutput(hwc_composer_device_t *dev, int externaltype) {
#if defined HDMI_DUAL_DISPLAY
hwc_context_t* ctx = (hwc_context_t*)(dev);
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
framebuffer_device_t *fbDev = hwcModule->fbDevice;
overlay::Overlay *ovLibObject = ctx->mOverlayLibObject;
if(externaltype && ctx->mHDMIEnabled &&
(externaltype != ctx->mHDMIEnabled)) {
// Close the current external display - as the SF will
// prioritize and send the correct external display HDMI/WFD
handleHDMIStateChange(dev, 0);
}
// Store the external display
ctx->mHDMIEnabled = (external_display_type)externaltype;
if(ctx->mHDMIEnabled) { //On connect, allow bypass to draw once to FB
ctx->pendingHDMI = true;
} else { //On disconnect, close immediately (there will be no bypass)
handleHDMIStateChange(dev, ctx->mHDMIEnabled);
}
#endif
}
/* function to handle the custom events to hwc.
* event - type of event
* value - value associated with the event
*/
static void hwc_perform(hwc_composer_device_t *dev, int event, int value) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
switch(event) {
#if defined HDMI_DUAL_DISPLAY
case EVENT_EXTERNAL_DISPLAY:
hwc_enableHDMIOutput(dev, value);
break;
#endif
case EVENT_FORCE_COMPOSITION:
//ctx->forceComposition = value;
break;
default:
LOGE("In hwc:perform UNKNOWN EVENT = %d!!", event);
break;
}
return;
}
static bool isValidDestination(const framebuffer_device_t* fbDev, const hwc_rect_t& rect)
{
if (!fbDev) {
LOGE("%s: fbDev is null", __FUNCTION__);
return false;
}
int dest_width = (rect.right - rect.left);
int dest_height = (rect.bottom - rect.top);
if (rect.left < 0 || rect.right < 0 || rect.top < 0 || rect.bottom < 0
|| dest_width <= 0 || dest_height <= 0) {
LOGE("%s: destination: left=%d right=%d top=%d bottom=%d width=%d"
"height=%d", __FUNCTION__, rect.left, rect.right, rect.top,
rect.bottom, dest_width, dest_height);
return false;
}
if ((rect.left+dest_width) > fbDev->width || (rect.top+dest_height) > fbDev->height) {
LOGE("%s: destination out of bound params", __FUNCTION__);
return false;
}
return true;
}
static int getS3DVideoFormat (const hwc_layer_list_t* list) {
int s3dFormat = 0;
if (list) {
for (size_t i=0; i<list->numHwLayers; i++) {
private_handle_t *hnd = (private_handle_t *)list->hwLayers[i].handle;
if (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO))
s3dFormat = FORMAT_3D_INPUT(hnd->format);
if (s3dFormat)
break;
}
}
return s3dFormat;
}
static int getS3DFormat (const hwc_layer_list_t* list) {
int s3dFormat = 0;
if (list) {
for (size_t i=0; i<list->numHwLayers; i++) {
private_handle_t *hnd = (private_handle_t *)list->hwLayers[i].handle;
if (hnd)
s3dFormat = FORMAT_3D_INPUT(hnd->format);
if (s3dFormat)
break;
}
}
return s3dFormat;
}
static bool isS3DCompositionRequired() {
#ifdef HDMI_AS_PRIMARY
return overlay::is3DTV();
#endif
return false;
}
static void markUILayerForS3DComposition (hwc_layer_t &layer, int s3dVideoFormat) {
#ifdef HDMI_AS_PRIMARY
layer.compositionType = HWC_FRAMEBUFFER;
switch(s3dVideoFormat) {
case HAL_3D_IN_SIDE_BY_SIDE_L_R:
case HAL_3D_IN_SIDE_BY_SIDE_R_L:
layer.hints |= HWC_HINT_DRAW_S3D_SIDE_BY_SIDE;
break;
case HAL_3D_IN_TOP_BOTTOM:
layer.hints |= HWC_HINT_DRAW_S3D_TOP_BOTTOM;
break;
default:
LOGE("%s: Unknown S3D input format 0x%x", __FUNCTION__, s3dVideoFormat);
break;
}
#endif
return;
}
/*
* This function loops thru the list of hwc layers and caches the
* layer details - such as yuvBuffer count, secure layer count etc.,(can
* add more in future)
* */
static void statCount(hwc_context_t *ctx, hwc_layer_list_t* list) {
int yuvBufCount = 0;
int secureLayerCnt = 0;
int layersNotUpdatingCount = 0;
if (list) {
for (size_t i=0 ; i<list->numHwLayers; i++) {
private_handle_t *hnd = (private_handle_t *)list->hwLayers[i].handle;
if (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO) &&
!(list->hwLayers[i].flags & HWC_DO_NOT_USE_OVERLAY)) {
yuvBufCount++;
}
if (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO) &&
(hnd->flags & private_handle_t::PRIV_FLAGS_SECURE_BUFFER) ) {
secureLayerCnt++;
}
if (hnd && (hnd->bufferType != BUFFER_TYPE_VIDEO) &&
list->hwLayers[i].flags & HWC_LAYER_NOT_UPDATING) {
layersNotUpdatingCount++;
}
}
}
ctx->yuvBufferCount = yuvBufCount;
ctx->numLayersNotUpdating = layersNotUpdatingCount;
return;
}
static int hwc_prepare(hwc_composer_device_t *dev, hwc_layer_list_t* list) {
hwc_context_t* ctx = (hwc_context_t*)(dev);
ctx->currentOverlayHandle = NULL;
if(!ctx) {
LOGE("hwc_prepare invalid context");
return -1;
}
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
if (!hwcModule) {
LOGE("hwc_prepare invalid module");
#ifdef COMPOSITION_BYPASS
unlockPreviousBypassBuffers(ctx);
unsetBypassBufferLockState(ctx);
#endif
unlockPreviousOverlayBuffer(ctx);
ExtDispOnly::close();
return -1;
}
int layerType = 0;
bool isS3DCompositionNeeded = false;
int s3dVideoFormat = 0;
bool useCopybit = false;
bool isSkipLayerPresent = false;
bool skipComposition = false;
if (list) {
useCopybit = canUseCopybit(hwcModule->fbDevice, list);
// cache the number of layer(like YUV, SecureBuffer, notupdating etc.,)
statCount(ctx, list);
skipComposition = canSkipComposition(ctx, ctx->yuvBufferCount,
list->numHwLayers, ctx->numLayersNotUpdating);
if ((ctx->yuvBufferCount == 0) && (ctx->hwcOverlayStatus == HWC_OVERLAY_OPEN)) {
ctx->hwcOverlayStatus = HWC_OVERLAY_PREPARE_TO_CLOSE;
}
if (ctx->yuvBufferCount == 1) {
s3dVideoFormat = getS3DVideoFormat(list);
if (s3dVideoFormat)
isS3DCompositionNeeded = isS3DCompositionRequired();
} else if((s3dVideoFormat = getS3DFormat(list))){
if (s3dVideoFormat)
isS3DCompositionNeeded = isS3DCompositionRequired();
}
for (size_t i=0 ; i<list->numHwLayers ; i++) {
private_handle_t *hnd = (private_handle_t *)list->hwLayers[i].handle;
// If there is a single Fullscreen layer, we can bypass it - TBD
// If there is only one video/camera buffer, we can bypass itn
if (isSkipLayer(&list->hwLayers[i])) {
isSkipLayerPresent = true;
skipComposition = false;
//Reset count, so that we end up composing once after animation
//is over, in case of overlay.
ctx->previousLayerCount = -1;
//If YUV layer is marked as SKIP, close pipes.
//If External is connected we still want to pump data to it,
//so keep the pipes open.
if(isYuvBuffer(hnd) && !isExternalConnected(ctx)) {
if (ctx->hwcOverlayStatus == HWC_OVERLAY_OPEN)
ctx->hwcOverlayStatus = HWC_OVERLAY_PREPARE_TO_CLOSE;
}
// During the animaton UI layers are marked as SKIP
// need to still mark the layer for S3D composition
if (isS3DCompositionNeeded)
markUILayerForS3DComposition(list->hwLayers[i], s3dVideoFormat);
list->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
list->hwLayers[i].hints &= ~HWC_HINT_CLEAR_FB;
markForGPUComp(ctx, list, i);
} else if (hnd && (hnd->bufferType == BUFFER_TYPE_VIDEO) && (ctx->yuvBufferCount == 1)) {
int flags = skipComposition ? WAIT_FOR_VSYNC : 0;
flags |= (hnd->flags &
private_handle_t::PRIV_FLAGS_SECURE_BUFFER)?
SECURE_OVERLAY_SESSION : 0;
flags |= (1 == list->numHwLayers) ? DISABLE_FRAMEBUFFER_FETCH : 0;
int videoStarted = VIDEO_2D_OVERLAY_STARTED;
setVideoOverlayStatusInGralloc(ctx, videoStarted);
if (!isValidDestination(hwcModule->fbDevice, list->hwLayers[i].displayFrame)) {
list->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
list->hwLayers[i].hints &= ~HWC_HINT_CLEAR_FB;
//Even though there are no skip layers, animation is still
//ON and in its final stages.
//Reset count, so that we end up composing once after animation
//is done, if overlay is used.
ctx->previousLayerCount = -1;
skipComposition = false;
if (ctx->hwcOverlayStatus == HWC_OVERLAY_OPEN)
ctx->hwcOverlayStatus = HWC_OVERLAY_PREPARE_TO_CLOSE;
#ifdef USE_OVERLAY
} else if(prepareOverlay(ctx, &(list->hwLayers[i]), flags) == 0) {
list->hwLayers[i].compositionType = HWC_USE_OVERLAY;
list->hwLayers[i].hints |= HWC_HINT_CLEAR_FB;
// We've opened the channel. Set the state to open.
ctx->hwcOverlayStatus = HWC_OVERLAY_OPEN;
#endif
} else if (hwcModule->compositionType & (COMPOSITION_TYPE_C2D|
COMPOSITION_TYPE_MDP)) {
//Fail safe path: If drawing with overlay fails,
//Use C2D if available.
list->hwLayers[i].compositionType = HWC_USE_COPYBIT;
} else {
//If C2D is not enabled fall back to GPU.
list->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
}
if (HWC_USE_OVERLAY != list->hwLayers[i].compositionType) {
skipComposition = false;
}
} else if (getLayerS3DFormat(list->hwLayers[i])) {
int flags = skipComposition ? WAIT_FOR_VSYNC : 0;
flags |= (1 == list->numHwLayers) ? DISABLE_FRAMEBUFFER_FETCH : 0;
flags |= (hnd->flags &
private_handle_t::PRIV_FLAGS_SECURE_BUFFER)?
SECURE_OVERLAY_SESSION : 0;
int videoStarted = VIDEO_3D_OVERLAY_STARTED;
setVideoOverlayStatusInGralloc(ctx, videoStarted);
#ifdef USE_OVERLAY
if(prepareOverlay(ctx, &(list->hwLayers[i]), flags) == 0) {
list->hwLayers[i].compositionType = HWC_USE_OVERLAY;
list->hwLayers[i].hints |= HWC_HINT_CLEAR_FB;
// We've opened the channel. Set the state to open.
ctx->hwcOverlayStatus = HWC_OVERLAY_OPEN;
}
#endif
} else if (isS3DCompositionNeeded) {
markUILayerForS3DComposition(list->hwLayers[i], s3dVideoFormat);
} else if (list->hwLayers[i].flags & HWC_USE_ORIGINAL_RESOLUTION) {
list->hwLayers[i].compositionType = HWC_USE_OVERLAY;
list->hwLayers[i].hints |= HWC_HINT_CLEAR_FB;
layerType |= HWC_ORIG_RESOLUTION;
} else if (hnd && hnd->flags & private_handle_t::PRIV_FLAGS_EXTERNAL_ONLY) {
//handle later after other layers are handled
} else if (hnd && (hwcModule->compositionType &
(COMPOSITION_TYPE_C2D|COMPOSITION_TYPE_MDP))) {
list->hwLayers[i].compositionType = HWC_USE_COPYBIT;
} else if ((hwcModule->compositionType == COMPOSITION_TYPE_DYN)
&& useCopybit) {
list->hwLayers[i].compositionType = HWC_USE_COPYBIT;
}
else {
list->hwLayers[i].compositionType = HWC_FRAMEBUFFER;
}
}
//Update the stats and pipe config for external-only layers
ExtDispOnly::update(ctx, list);
if (skipComposition) {
list->flags |= HWC_SKIP_COMPOSITION;
} else {
list->flags &= ~HWC_SKIP_COMPOSITION;
}
#ifdef COMPOSITION_BYPASS
bool isBypassUsed = true;
bool isDoable = isBypassDoable(dev, ctx->yuvBufferCount, list);
//Check if bypass is feasible
if(isDoable && !isSkipLayerPresent) {
if(setupBypass(ctx, list)) {
setBypassLayerFlags(ctx, list);
ctx->bypassState = BYPASS_ON;
} else {
LOGE_IF(BYPASS_DEBUG,"%s: Bypass setup Failed",__FUNCTION__);
isBypassUsed = false;
}
} else {
LOGE_IF( BYPASS_DEBUG,"%s: Bypass not possible[%d,%d]",__FUNCTION__,
isDoable, !isSkipLayerPresent );
isBypassUsed = false;
}
//Reset bypass states
if(!isBypassUsed) {
ctx->nPipesUsed = 0;
unsetBypassLayerFlags(list);
if(ctx->bypassState == BYPASS_ON) {
ctx->bypassState = BYPASS_OFF_PENDING;
}
}
#endif
} else {
#ifdef COMPOSITION_BYPASS
unlockPreviousBypassBuffers(ctx);
unsetBypassBufferLockState(ctx);
#endif
unlockPreviousOverlayBuffer(ctx);
}
return 0;
}
// ---------------------------------------------------------------------------
struct range {
int current;
int end;
};
struct region_iterator : public copybit_region_t {
region_iterator(hwc_region_t region) {
mRegion = region;
r.end = region.numRects;
r.current = 0;
this->next = iterate;
}
private:
static int iterate(copybit_region_t const * self, copybit_rect_t* rect) {
if (!self || !rect) {
LOGE("iterate invalid parameters");
return 0;
}
region_iterator const* me = static_cast<region_iterator const*>(self);
if (me->r.current != me->r.end) {
rect->l = me->mRegion.rects[me->r.current].left;
rect->t = me->mRegion.rects[me->r.current].top;
rect->r = me->mRegion.rects[me->r.current].right;
rect->b = me->mRegion.rects[me->r.current].bottom;
me->r.current++;
return 1;
}
return 0;
}
hwc_region_t mRegion;
mutable range r;
};
static int drawLayerUsingCopybit(hwc_composer_device_t *dev, hwc_layer_t *layer, EGLDisplay dpy,
EGLSurface surface)
{
hwc_context_t* ctx = (hwc_context_t*)(dev);
if(!ctx) {
LOGE("%s: null context ", __FUNCTION__);
return -1;
}
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(dev->common.module);
if(!hwcModule) {
LOGE("%s: null module ", __FUNCTION__);
return -1;
}
private_handle_t *hnd = (private_handle_t *)layer->handle;
if(!hnd) {
LOGE("%s: invalid handle", __FUNCTION__);
return -1;
}
// Lock this buffer for read.
genlock_lock_type lockType = GENLOCK_READ_LOCK;
int err = genlock_lock_buffer(hnd, lockType, GENLOCK_MAX_TIMEOUT);
if (GENLOCK_FAILURE == err) {
LOGE("%s: genlock_lock_buffer(READ) failed", __FUNCTION__);
return -1;
}
//render buffer
android_native_buffer_t *renderBuffer = (android_native_buffer_t *)eglGetRenderBufferANDROID(dpy, surface);
if (!renderBuffer) {
LOGE("%s: eglGetRenderBufferANDROID returned NULL buffer", __FUNCTION__);
genlock_unlock_buffer(hnd);
return -1;
}
private_handle_t *fbHandle = (private_handle_t *)renderBuffer->handle;
if(!fbHandle) {
LOGE("%s: Framebuffer handle is NULL", __FUNCTION__);
genlock_unlock_buffer(hnd);
return -1;
}
// Set the copybit source:
copybit_image_t src;
src.w = hnd->width;
src.h = hnd->height;
src.format = hnd->format;
src.base = (void *)hnd->base;
src.handle = (native_handle_t *)layer->handle;
src.horiz_padding = src.w - hnd->width;
// Initialize vertical padding to zero for now,
// this needs to change to accomodate vertical stride
// if needed in the future
src.vert_padding = 0;
// Remove the srcBufferTransform if any
layer->transform = (layer->transform & FINAL_TRANSFORM_MASK);
// Copybit source rect
hwc_rect_t sourceCrop = layer->sourceCrop;
copybit_rect_t srcRect = {sourceCrop.left, sourceCrop.top,
sourceCrop.right,
sourceCrop.bottom};
// Copybit destination rect
hwc_rect_t displayFrame = layer->displayFrame;
copybit_rect_t dstRect = {displayFrame.left, displayFrame.top,
displayFrame.right,
displayFrame.bottom};
// Copybit dst
copybit_image_t dst;
dst.w = ALIGN(fbHandle->width,32);
dst.h = fbHandle->height;
dst.format = fbHandle->format;
dst.base = (void *)fbHandle->base;
dst.handle = (native_handle_t *)renderBuffer->handle;
copybit_device_t *copybit = hwcModule->copybitEngine;
int32_t screen_w = displayFrame.right - displayFrame.left;
int32_t screen_h = displayFrame.bottom - displayFrame.top;
int32_t src_crop_width = sourceCrop.right - sourceCrop.left;
int32_t src_crop_height = sourceCrop.bottom -sourceCrop.top;
float copybitsMaxScale = (float)copybit->get(copybit,COPYBIT_MAGNIFICATION_LIMIT);
float copybitsMinScale = (float)copybit->get(copybit,COPYBIT_MINIFICATION_LIMIT);
if((layer->transform == HWC_TRANSFORM_ROT_90) ||
(layer->transform == HWC_TRANSFORM_ROT_270)) {
//swap screen width and height
int tmp = screen_w;
screen_w = screen_h;
screen_h = tmp;
}
private_handle_t *tmpHnd = NULL;
if(screen_w <=0 || screen_h<=0 ||src_crop_width<=0 || src_crop_height<=0 ) {
LOGE("%s: wrong params for display screen_w=%d src_crop_width=%d screen_w=%d \
src_crop_width=%d", __FUNCTION__, screen_w,
src_crop_width,screen_w,src_crop_width);
genlock_unlock_buffer(hnd);
return -1;
}
float dsdx = (float)screen_w/src_crop_width;
float dtdy = (float)screen_h/src_crop_height;
float scaleLimitMax = copybitsMaxScale * copybitsMaxScale;
float scaleLimitMin = copybitsMinScale * copybitsMinScale;
if(dsdx > scaleLimitMax || dtdy > scaleLimitMax || dsdx < 1/scaleLimitMin || dtdy < 1/scaleLimitMin) {
LOGE("%s: greater than max supported size dsdx=%f dtdy=%f scaleLimitMax=%f scaleLimitMin=%f", __FUNCTION__,dsdx,dtdy,scaleLimitMax,1/scaleLimitMin);
genlock_unlock_buffer(hnd);
return -1;
}
if(dsdx > copybitsMaxScale || dtdy > copybitsMaxScale || dsdx < 1/copybitsMinScale || dtdy < 1/copybitsMinScale){
// The requested scale is out of the range the hardware
// can support.
LOGD("%s:%d::Need to scale twice dsdx=%f, dtdy=%f,copybitsMaxScale=%f,copybitsMinScale=%f,screen_w=%d,screen_h=%d \
src_crop_width=%d src_crop_height=%d",__FUNCTION__,__LINE__,
dsdx,dtdy,copybitsMaxScale,1/copybitsMinScale,screen_w,screen_h,src_crop_width,src_crop_height);
//Driver makes width and height as even
//that may cause wrong calculation of the ratio
//in display and crop.Hence we make
//crop width and height as even.
src_crop_width = (src_crop_width/2)*2;
src_crop_height = (src_crop_height/2)*2;
int tmp_w = src_crop_width;
int tmp_h = src_crop_height;
if (dsdx > copybitsMaxScale || dtdy > copybitsMaxScale ){
tmp_w = src_crop_width*copybitsMaxScale;
tmp_h = src_crop_height*copybitsMaxScale;
}else if (dsdx < 1/copybitsMinScale ||dtdy < 1/copybitsMinScale ){
tmp_w = src_crop_width/copybitsMinScale;
tmp_h = src_crop_height/copybitsMinScale;
tmp_w = (tmp_w/2)*2;
tmp_h = (tmp_h/2)*2;
}
LOGD("%s:%d::tmp_w = %d,tmp_h = %d",__FUNCTION__,__LINE__,tmp_w,tmp_h);
int usage = GRALLOC_USAGE_PRIVATE_ADSP_HEAP |
GRALLOC_USAGE_PRIVATE_MM_HEAP;
if (0 == alloc_buffer(&tmpHnd, tmp_w, tmp_h, fbHandle->format, usage)){
copybit_image_t tmp_dst;
copybit_rect_t tmp_rect;
tmp_dst.w = tmp_w;
tmp_dst.h = tmp_h;
tmp_dst.format = tmpHnd->format;
tmp_dst.handle = tmpHnd;
tmp_dst.horiz_padding = src.horiz_padding;
tmp_dst.vert_padding = src.vert_padding;
tmp_rect.l = 0;
tmp_rect.t = 0;
tmp_rect.r = tmp_dst.w;
tmp_rect.b = tmp_dst.h;
//create one clip region
hwc_rect tmp_hwc_rect = {0,0,tmp_rect.r,tmp_rect.b};
hwc_region_t tmp_hwc_reg = {1,(hwc_rect_t const*)&tmp_hwc_rect};
region_iterator tmp_it(tmp_hwc_reg);
copybit->set_parameter(copybit,COPYBIT_TRANSFORM,0);
copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA,
(layer->blending == HWC_BLENDING_NONE) ? -1 : layer->alpha);
err = copybit->stretch(copybit,&tmp_dst, &src, &tmp_rect, &srcRect, &tmp_it);
if(err < 0){
LOGE("%s:%d::tmp copybit stretch failed",__FUNCTION__,__LINE__);
if(tmpHnd)
free_buffer(tmpHnd);
genlock_unlock_buffer(hnd);
return err;
}
// copy new src and src rect crop
src = tmp_dst;
srcRect = tmp_rect;
}
}
// Copybit region
hwc_region_t region = layer->visibleRegionScreen;
region_iterator copybitRegion(region);
copybit->set_parameter(copybit, COPYBIT_FRAMEBUFFER_WIDTH, renderBuffer->width);
copybit->set_parameter(copybit, COPYBIT_FRAMEBUFFER_HEIGHT, renderBuffer->height);
copybit->set_parameter(copybit, COPYBIT_TRANSFORM, layer->transform);
copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA,
(layer->blending == HWC_BLENDING_NONE) ? -1 : layer->alpha);
copybit->set_parameter(copybit, COPYBIT_PREMULTIPLIED_ALPHA,
(layer->blending == HWC_BLENDING_PREMULT)? COPYBIT_ENABLE : COPYBIT_DISABLE);
copybit->set_parameter(copybit, COPYBIT_DITHER,
(dst.format == HAL_PIXEL_FORMAT_RGB_565)? COPYBIT_ENABLE : COPYBIT_DISABLE);
err = copybit->stretch(copybit, &dst, &src, &dstRect, &srcRect, &copybitRegion);
if(tmpHnd)
free_buffer(tmpHnd);
if(err < 0)
LOGE("%s: copybit stretch failed",__FUNCTION__);
// Unlock this buffer since copybit is done with it.
err = genlock_unlock_buffer(hnd);
if (GENLOCK_FAILURE == err) {
LOGE("%s: genlock_unlock_buffer failed", __FUNCTION__);
}
return err;
}
static int drawLayerUsingOverlay(hwc_context_t *ctx, hwc_layer_t *layer)
{
if (ctx && ctx->mOverlayLibObject) {
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(ctx->device.common.module);
if (!hwcModule) {
LOGE("drawLayerUsingLayer null module ");
return -1;
}
private_handle_t *hnd = (private_handle_t *)layer->handle;
overlay::Overlay *ovLibObject = ctx->mOverlayLibObject;
int ret = 0;
// Lock this buffer for read.
if (GENLOCK_NO_ERROR != genlock_lock_buffer(hnd, GENLOCK_READ_LOCK,
GENLOCK_MAX_TIMEOUT)) {
LOGE("%s: genlock_lock_buffer(READ) failed", __FUNCTION__);
return -1;
}
ret = ovLibObject->queueBuffer(hnd);
if (!ret) {
LOGE("drawLayerUsingOverlay queueBuffer failed");
// Unlock the buffer handle
genlock_unlock_buffer(hnd);
} else {
// Store the current buffer handle as the one that is to be unlocked after
// the next overlay play call.
hnd->flags |= private_handle_t::PRIV_FLAGS_HWC_LOCK;
ctx->currentOverlayHandle = hnd;
}
return ret;
}
return -1;
}
#ifdef COMPOSITION_BYPASS
static int drawLayerUsingBypass(hwc_context_t *ctx, hwc_layer_t *layer, int layer_index) {
int index = getLayerbypassIndex(layer);
if(index < 0) {
LOGE("%s: Invalid bypass index (%d)", __FUNCTION__, index);
return -1;
}
if (ctx && ctx->mOvUI[index]) {
overlay::OverlayUI *ovUI = ctx->mOvUI[index];
int ret = 0;
private_handle_t *hnd = (private_handle_t *)layer->handle;
if(!hnd) {
LOGE("%s handle null", __FUNCTION__);
return -1;
}
ctx->bypassBufferLockState[index] = BYPASS_BUFFER_UNLOCKED;
if (ctx->swapInterval > 0) {
if (GENLOCK_FAILURE == genlock_lock_buffer(hnd, GENLOCK_READ_LOCK,
GENLOCK_MAX_TIMEOUT)) {
LOGE("%s: genlock_lock_buffer(READ) failed", __FUNCTION__);
return -1;
}
ctx->bypassBufferLockState[index] = BYPASS_BUFFER_LOCKED;
}
LOGE_IF(BYPASS_DEBUG,"%s: Bypassing layer: %p using pipe: %d",__FUNCTION__, layer, index );
ret = ovUI->queueBuffer(hnd);
if (ret) {
// Unlock the locked buffer
if (ctx->swapInterval > 0) {
if (GENLOCK_FAILURE == genlock_unlock_buffer(hnd)) {
LOGE("%s: genlock_unlock_buffer failed", __FUNCTION__);
}
}
ctx->bypassBufferLockState[index] = BYPASS_BUFFER_UNLOCKED;
return -1;
}
}
return 0;
}
#endif
static int hwc_set(hwc_composer_device_t *dev,
hwc_display_t dpy,
hwc_surface_t sur,
hwc_layer_list_t* list)
{
hwc_context_t* ctx = (hwc_context_t*)(dev);
if(!ctx) {
LOGE("hwc_set invalid context");
ExtDispOnly::close();
return -1;
}
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
framebuffer_device_t *fbDev = hwcModule->fbDevice;
if (!hwcModule) {
LOGE("hwc_set invalid module");
#ifdef COMPOSITION_BYPASS
unlockPreviousBypassBuffers(ctx);
unsetBypassBufferLockState(ctx);
#endif
ExtDispOnly::close();
unlockPreviousOverlayBuffer(ctx);
return -1;
}
#ifdef COMPOSITION_BYPASS
if(!list){
//Device in suspended state. Close all the MDP pipes
ctx->nPipesUsed = 0;
}
closeExtraPipes(ctx);
#endif
int ret = 0;
if (list) {
bool bDumpLayers = needToDumpLayers(); // Check need for debugging dumps
for (size_t i=0; i<list->numHwLayers; i++) {
if (bDumpLayers)
dumpLayer(hwcModule->compositionType, list->flags, i, list->hwLayers);
if (list->hwLayers[i].flags & HWC_SKIP_LAYER) {
continue;
#ifdef COMPOSITION_BYPASS
} else if (list->hwLayers[i].flags & HWC_COMP_BYPASS) {
ctx->idleTimer.reset();
drawLayerUsingBypass(ctx, &(list->hwLayers[i]), i);
#endif
} else if (list->hwLayers[i].compositionType == HWC_USE_OVERLAY) {
drawLayerUsingOverlay(ctx, &(list->hwLayers[i]));
} else if (list->flags & HWC_SKIP_COMPOSITION) {
continue;
} else if (list->hwLayers[i].compositionType == HWC_USE_COPYBIT) {
drawLayerUsingCopybit(dev, &(list->hwLayers[i]), (EGLDisplay)dpy, (EGLSurface)sur);
}
}
} else {
if (ctx->hwcOverlayStatus == HWC_OVERLAY_OPEN)
ctx->hwcOverlayStatus = HWC_OVERLAY_PREPARE_TO_CLOSE;
}
bool canSkipComposition = list && list->flags & HWC_SKIP_COMPOSITION;
//Draw External-only layers
if(ExtDispOnly::draw(ctx, list) != overlay::NO_ERROR) {
ExtDispOnly::close();
}
#if BYPASS_DEBUG
if(canSkipComposition)
LOGE("%s: skipping eglSwapBuffer call", __FUNCTION__);
#endif
// Do not call eglSwapBuffers if we the skip composition flag is set on the list.
if (dpy && sur && !canSkipComposition) {
//Wait for closing pipes and unlocking buffers until FB is done posting
//buffers, only if MDP pipes are in use. (Video, Comp.Bypass)
//For future releases we might wait even for UI updates. TBD.
bool waitForFBPost = false;
#ifdef COMPOSITION_BYPASS
if(ctx->bypassState == BYPASS_OFF_PENDING)
waitForFBPost = true;
#endif
if(ctx->hwcOverlayStatus != HWC_OVERLAY_CLOSED)
waitForFBPost = true;
//Reset FB post status before doing eglSwap
if(waitForFBPost)
fbDev->perform(fbDev, EVENT_RESET_POSTBUFFER, NULL);
EGLBoolean sucess = eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)sur);
if (!sucess) {
ret = HWC_EGL_ERROR;
} else {
//If swap succeeds, wait till FB posts buffer for display.
if(waitForFBPost)
fbDev->perform(fbDev, EVENT_WAIT_POSTBUFFER, NULL);
#ifdef COMPOSITION_BYPASS
if(ctx->bypassState == BYPASS_OFF_PENDING)
ctx->bypassState = BYPASS_OFF;
#endif
CALC_FPS();
}
}
#ifdef COMPOSITION_BYPASS
unlockPreviousBypassBuffers(ctx);
storeLockedBypassHandle(list, ctx);
// We have stored the handles, unset the current lock states in the context.
unsetBypassBufferLockState(ctx);
#endif
#if defined HDMI_DUAL_DISPLAY
if(ctx->pendingHDMI) {
handleHDMIStateChange(dev, ctx->mHDMIEnabled);
ctx->pendingHDMI = false;
hwc_procs* proc = (hwc_procs*)ctx->device.reserved_proc[0];
if(!proc) {
LOGE("%s: HWC proc not registered", __FUNCTION__);
} else {
/* Trigger SF to redraw the current frame
* Used when the video is paused and external
* display is connected
*/
ctx->forceComposition = true;
proc->invalidate(proc);
}
}
#endif
hwc_closeOverlayChannels(ctx);
// Unlock the previously locked vdeo buffer, since the overlay has completed
// reading the buffer. Should be done only after closing channels, if
// applicable.
unlockPreviousOverlayBuffer(ctx);
return ret;
}
static int hwc_device_close(struct hw_device_t *dev)
{
if(!dev) {
LOGE("hwc_device_close null device pointer");
return -1;
}
struct hwc_context_t* ctx = (struct hwc_context_t*)dev;
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
ctx->device.common.module);
// Close the overlay and copybit modules
if(hwcModule->copybitEngine) {
copybit_close(hwcModule->copybitEngine);
hwcModule->copybitEngine = NULL;
}
if(hwcModule->fbDevice) {
framebuffer_close(hwcModule->fbDevice);
hwcModule->fbDevice = NULL;
}
unlockPreviousOverlayBuffer(ctx);
if (ctx) {
delete ctx->mOverlayLibObject;
ctx->mOverlayLibObject = NULL;
#ifdef COMPOSITION_BYPASS
for(int i = 0; i < MAX_BYPASS_LAYERS; i++) {
delete ctx->mOvUI[i];
}
unlockPreviousBypassBuffers(ctx);
unsetBypassBufferLockState(ctx);
#endif
ExtDispOnly::close();
ExtDispOnly::destroy();
free(ctx);
}
return 0;
}
/*****************************************************************************/
static int hwc_module_initialize(struct private_hwc_module_t* hwcModule)
{
// Open the overlay and copybit modules
hw_module_t const *module;
if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) {
copybit_open(module, &(hwcModule->copybitEngine));
}
if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
framebuffer_open(module, &(hwcModule->fbDevice));
}
// get the current composition type
char property[PROPERTY_VALUE_MAX];
if (property_get("debug.sf.hw", property, NULL) > 0) {
if(atoi(property) == 0) {
//debug.sf.hw = 0
hwcModule->compositionType = COMPOSITION_TYPE_CPU;
} else { //debug.sf.hw = 1
// Get the composition type
property_get("debug.composition.type", property, NULL);
if (property == NULL) {
hwcModule->compositionType = COMPOSITION_TYPE_GPU;
} else if ((strncmp(property, "mdp", 3)) == 0) {
hwcModule->compositionType = COMPOSITION_TYPE_MDP;
} else if ((strncmp(property, "c2d", 3)) == 0) {
hwcModule->compositionType = COMPOSITION_TYPE_C2D;
} else if ((strncmp(property, "dyn", 3)) == 0) {
hwcModule->compositionType = COMPOSITION_TYPE_DYN;
} else {
hwcModule->compositionType = COMPOSITION_TYPE_GPU;
}
if(!hwcModule->copybitEngine)
hwcModule->compositionType = COMPOSITION_TYPE_GPU;
}
} else { //debug.sf.hw is not set. Use cpu composition
hwcModule->compositionType = COMPOSITION_TYPE_CPU;
}
//Check if composition bypass is enabled
if(property_get("ro.sf.compbypass.enable", property, NULL) > 0) {
if(atoi(property) == 1) {
hwcModule->isBypassEnabled = true;
}
}
CALC_INIT();
return 0;
}
static int hwc_device_open(const struct hw_module_t* module, const char* name,
struct hw_device_t** device)
{
int status = -EINVAL;
if (!strcmp(name, HWC_HARDWARE_COMPOSER)) {
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>
(const_cast<hw_module_t*>(module));
hwc_module_initialize(hwcModule);
struct hwc_context_t *dev;
dev = (hwc_context_t*)malloc(sizeof(*dev));
/* initialize our state here */
memset(dev, 0, sizeof(*dev));
#ifdef USE_OVERLAY
dev->mOverlayLibObject = new overlay::Overlay();
if(overlay::initOverlay() == -1)
LOGE("overlay::initOverlay() ERROR!!");
#else
dev->mOverlayLibObject = NULL;
#endif
#ifdef COMPOSITION_BYPASS
for(int i = 0; i < MAX_BYPASS_LAYERS; i++) {
dev->mOvUI[i] = new overlay::OverlayUI();
dev->previousBypassHandle[i] = NULL;
}
unsetBypassBufferLockState(dev);
dev->bypassState = BYPASS_OFF;
char property[PROPERTY_VALUE_MAX];
unsigned long idle_timeout = DEFAULT_IDLE_TIME;
if (property_get("debug.bypass.idletime", property, NULL) > 0) {
if(atoi(property) != 0)
idle_timeout = atoi(property);
}
dev->idleTimer.create(timeout_handler, dev);
dev->idleTimer.setFreq(idle_timeout);
dev->idleTimeOut = false;
#endif
ExtDispOnly::init();
#if defined HDMI_DUAL_DISPLAY
dev->mHDMIEnabled = EXT_TYPE_NONE;
dev->pendingHDMI = false;
#endif
dev->previousOverlayHandle = NULL;
dev->currentOverlayHandle = NULL;
dev->hwcOverlayStatus = HWC_OVERLAY_CLOSED;
dev->previousLayerCount = -1;
char value[PROPERTY_VALUE_MAX];
if (property_get("debug.egl.swapinterval", value, "1") > 0) {
dev->swapInterval = atoi(value);
}
/* 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 = hwc_device_close;
dev->device.prepare = hwc_prepare;
dev->device.set = hwc_set;
dev->device.registerProcs = hwc_registerProcs;
dev->device.perform = hwc_perform;
*device = &dev->device.common;
status = 0;
}
return status;
}
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