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android_hardware_qcom_display/libhwcomposer-qsd8k/hwcomposer.cpp
Andrew Sutherland 3d85fbcf8e qsd8k-hwcomposer: update drawLayerUsingCopybit, revise prepare/set 
apply:
Author:     Ramakant Singh <ramaka@codeaurora.org>
Display/libhwcomposer:Add intermediate stretch for low resolution clips
Copybit module has a limited stretch to scale a clip.
Hence we need to do a intermediate stretch before going
to final stretch.

and cleanup loops in hwc_prepare/set

Change-Id: Ice32e12051c5c4367d1fafe17e804679e6e727c9
2012-02-27 00:16:37 -06:00

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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Portions modified by Andrew Sutherland <dr3wsuth3rland@gmail.com> for
* the Evervolv Project's qsd8k lineup
*
* 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 <hardware/hwcomposer.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <ui/android_native_buffer.h>
#include <gralloc_priv.h>
#include <genlock.h>
#include <qcom_ui.h>
#include <copybit.h>
#define HWC_DEBUG 0
// Warning: below defines produce massive logcat output
#define HWC_DBG_DUMP_LAYER 0
#define HWC_DEBUG_COPYBIT 0
/*****************************************************************************/
#define ALIGN(x, align) (((x) + ((align)-1)) & ~((align)-1))
struct hwc_context_t {
hwc_composer_device_t device;
/* our private state goes below here */
};
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;
};
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,
};
/*****************************************************************************/
static void dump_layer(hwc_layer_t const* l) {
LOGD_IF(HWC_DBG_DUMP_LAYER,"\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, 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 int hwc_prepare(hwc_composer_device_t *dev, hwc_layer_list_t* list) {
// if there is no list or geometry is not changed,
// there is no need to do any work here
if( !list || (!(list->flags & HWC_GEOMETRY_CHANGED)))
return 0;
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
if (!hwcModule) {
LOGE("hwc_prepare invalid module");
return -1;
}
//TODO: this probably needs work
LOGD_IF(HWC_DEBUG,"hwc_prepare found %d layers",list->numHwLayers);
for (size_t i=0 ; i<list->numHwLayers ; i++) {
dump_layer(&list->hwLayers[i]);
// check for skip layer
if (list->hwLayers[i].flags & HWC_SKIP_LAYER) {
LOGD_IF(HWC_DEBUG,"hwc_prepare HWC_SKIP_LAYER on layer %d",i);
ssize_t layer_countdown = ((ssize_t)i) - 1;
// Mark every layer below the SKIP layer to be composed by the GPU
while (layer_countdown >= 0)
{
list->hwLayers[layer_countdown].compositionType = HWC_FRAMEBUFFER;
list->hwLayers[layer_countdown].hints &= ~HWC_HINT_CLEAR_FB;
layer_countdown--;
}
continue;
}
// use copybit for everything
if (hwcModule->compositionType & COMPOSITION_TYPE_MDP) {
LOGD_IF(HWC_DEBUG,"hwc_prepare using copybit for layer %d", i);
list->hwLayers[i].compositionType = HWC_USE_COPYBIT;
} else {
LOGD_IF(HWC_DEBUG,"hwc_prepare copybit flag not set, using framebuffer for layer %d", i);
list->hwLayers[i].compositionType = HWC_FRAMEBUFFER; //Google default
}
}
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) {
LOGE("iterate invalid copybit region");
return 0;
} else if (!rect) {
LOGE("iterate invalid copybit rect");
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("drawLayerUsingCopybit null context ");
return -1;
}
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(dev->common.module);
if(!hwcModule) {
LOGE("drawLayerUsingCopybit null module ");
return -1;
}
private_handle_t *hnd = (private_handle_t *)layer->handle;
if(!hnd) {
LOGE("drawLayerUsingCopybit invalid handle");
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("drawLayerUsingCopybit genlock_lock_buffer(READ) failed");
return -1;
}
//render buffer
android_native_buffer_t *renderBuffer = (android_native_buffer_t *)eglGetRenderBufferANDROID(dpy, surface);
if (!renderBuffer) {
LOGE("drawLayerUsingCopybit eglGetRenderBufferANDROID returned NULL buffer");
genlock_unlock_buffer(hnd);
return -1;
}
private_handle_t *fbHandle = (private_handle_t *)renderBuffer->handle;
if(!fbHandle) {
LOGE("drawLayerUsingCopybit Framebuffer handle is NULL");
genlock_unlock_buffer(hnd);
return -1;
}
int alignment = 32;
if( HAL_PIXEL_FORMAT_RGB_565 == fbHandle->format )
alignment = 16;
// Set the copybit source:
copybit_image_t src;
src.w = ALIGN(hnd->width, alignment);
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;
// 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,alignment);
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;
int32_t copybitsMaxScale = copybit->get(copybit,COPYBIT_MAGNIFICATION_LIMIT);
if(layer->transform & (HWC_TRANSFORM_ROT_90 | HWC_TRANSFORM_ROT_270)){
//swap screen width and height
int tmp = screen_w;
screen_w = screen_h;
screen_h = tmp;
}
int32_t dsdx = screen_w/src_crop_width;
int32_t dtdy = screen_h/src_crop_height;
sp<GraphicBuffer> tempBitmap;
if(dsdx > copybitsMaxScale || dtdy > copybitsMaxScale){
// The requested scale is out of the range the hardware
// can support.
LOGD("%s:%d::Need to scale dsdx=%d, dtdy=%d,maxScaleInv=%d,screen_w=%d,screen_h=%d \
src_crop_width=%d src_crop_height=%d",__FUNCTION__,__LINE__,
dsdx,dtdy,copybitsMaxScale,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*copybitsMaxScale;
int tmp_h = src_crop_height*copybitsMaxScale;
LOGD("%s:%d::tmp_w = %d,tmp_h = %d",__FUNCTION__,__LINE__,tmp_w,tmp_h);
tempBitmap = new GraphicBuffer(
tmp_w, tmp_h, src.format,
GraphicBuffer::USAGE_HW_2D);
err = tempBitmap->initCheck();
if (err == android::NO_ERROR){
copybit_image_t tmp_dst;
copybit_rect_t tmp_rect;
tmp_dst.w = tmp_w;
tmp_dst.h = tmp_h;
tmp_dst.format = tempBitmap->format;
tmp_dst.handle = (native_handle_t*)tempBitmap->getNativeBuffer()->handle;
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__);
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(err < 0)
LOGE("drawLayerUsingCopybit stretch failed");
// Unlock this buffer since copybit is done with it.
err = genlock_unlock_buffer(hnd);
if (GENLOCK_FAILURE == err) {
LOGE("drawLayerUsingCopybit genlock_unlock_buffer failed");
}
LOGD_IF(HWC_DEBUG_COPYBIT,"drawLayerUsingCopybit completed with err %d",err);
return err;
}
static int hwc_set(hwc_composer_device_t *dev,
hwc_display_t dpy,
hwc_surface_t sur,
hwc_layer_list_t* list)
{
if (dpy == NULL && sur == NULL && list == NULL) {
// special case: the screen is off, there is nothing to do.
LOGD_IF(HWC_DEBUG,"hwc_set screen is off");
return 0;
} else if (!list) {
// allow hwc_set to partially execute here, hack for screen off animation
LOGD_IF(HWC_DEBUG,"hwc_set invalid list: attempting hack");
EGLBoolean sucess = eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)sur);
if (!sucess) {
LOGE("hwc_set invalid list and eglSwapBuffers() failed");
return HWC_EGL_ERROR;
}
return 0;
}
private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
dev->common.module);
if (!hwcModule) {
LOGE("hwc_set invalid module");
return -1;
}
for (size_t i=0; i<list->numHwLayers; i++) {
if (list->hwLayers[i].flags & HWC_SKIP_LAYER) {
continue;
} 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);
}
}
if(list->flags & HWC_SKIP_COMPOSITION)
LOGD_IF(HWC_DEBUG,"hwc_set skipping eglSwapBuffer call");
// Do not call eglSwapBuffers if the skip composition flag is set on the list.
if (!(list->flags & HWC_SKIP_COMPOSITION)) {
EGLBoolean sucess = eglSwapBuffers((EGLDisplay)dpy, (EGLSurface)sur);
if (!sucess) {
LOGE("hwc_set eglSwapBuffers() failed");
return HWC_EGL_ERROR;
}
}
return 0;
}
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 copybit module
if(hwcModule->copybitEngine) {
copybit_close(hwcModule->copybitEngine);
hwcModule->copybitEngine = NULL;
}
if(hwcModule->fbDevice) {
framebuffer_close(hwcModule->fbDevice);
hwcModule->fbDevice = NULL;
}
if (ctx) {
free(ctx);
}
return 0;
}
/*****************************************************************************/
static int hwc_module_initialize(struct private_hwc_module_t* hwcModule)
{
// Open the copybit module
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 {
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;
}
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));
/* 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;
*device = &dev->device.common;
status = 0;
}
return status;
}
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