/*
 * Copyright (c) 2011-2012, Code Aurora Forum. 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 Code Aurora Forum, Inc. 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.
 */

#include <cutils/log.h>
#include <cutils/memory.h>
#include <qcom_ui.h>
#include <utils/comptype.h>
#include <gralloc_priv.h>
#include <alloc_controller.h>
#include <memalloc.h>
#include <errno.h>
#include <EGL/eglext.h>
#include <sys/stat.h>
#include <SkBitmap.h>
#include <SkImageEncoder.h>
#include <Transform.h>

using gralloc::IMemAlloc;
using gralloc::IonController;
using gralloc::alloc_data;
using android::sp;
namespace {

static android::sp<gralloc::IAllocController> sAlloc = 0;

int reallocate_memory(native_handle_t *buffer_handle, int mReqSize, int usage)
{
    int ret = 0;

#ifndef NON_QCOM_TARGET
    if (sAlloc == 0) {
        sAlloc = gralloc::IAllocController::getInstance(true);
    }
    if (sAlloc == 0) {
        LOGE("sAlloc is still NULL");
        return -EINVAL;
    }

    // Dealloc the old memory
    private_handle_t *hnd = (private_handle_t *)buffer_handle;
    sp<IMemAlloc> memalloc = sAlloc->getAllocator(hnd->flags);
    ret = memalloc->free_buffer((void*)hnd->base, hnd->size, hnd->offset, hnd->fd);

    if (ret) {
        LOGE("%s: free_buffer failed", __FUNCTION__);
        return -1;
    }

    // Realloc new memory
    alloc_data data;
    data.base = 0;
    data.fd = -1;
    data.offset = 0;
    data.size = mReqSize;
    data.align = getpagesize();
    data.uncached = true;
    int allocFlags = usage;

    switch (hnd->format) {
        case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
        case (HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED^HAL_PIXEL_FORMAT_INTERLACE): {
            data.align = 8192;
        } break;
        default: break;
    }
    ret = sAlloc->allocate(data, allocFlags, 0);
    if (ret == 0) {
        hnd->fd = data.fd;
        hnd->base = (int)data.base;
        hnd->offset = data.offset;
        hnd->size = data.size;
    } else {
        LOGE("%s: allocate failed", __FUNCTION__);
        return -EINVAL;
    }
#endif
    return ret;
}
}; // ANONYNMOUS NAMESPACE

/*
 * Gets the number of arguments required for this operation.
 *
 * @param: operation whose argument count is required.
 *
 * @return -EINVAL if the operation is invalid.
 */
int getNumberOfArgsForOperation(int operation) {
    int num_args = -EINVAL;
    switch(operation) {
        case NATIVE_WINDOW_SET_BUFFERS_SIZE:
            num_args = 1;
            break;
        case  NATIVE_WINDOW_UPDATE_BUFFERS_GEOMETRY:
            num_args = 3;
            break;
        case NATIVE_WINDOW_SET_PIXEL_ASPECT_RATIO:
            num_args = 2;
            break;
        default: LOGE("%s: invalid operation(0x%x)", __FUNCTION__, operation);
                 break;
    };
    return num_args;
}

/*
 * Checks if the format is supported by the GPU.
 *
 * @param: format to check
 *
 * @return true if the format is supported by the GPU.
 */
bool isGPUSupportedFormat(int format) {
    if (format == HAL_PIXEL_FORMAT_YV12) {
        // We check the YV12 formats, since some Qcom specific formats
        // could have the bits set.
        return true;
    } else if ((format == HAL_PIXEL_FORMAT_RGB_888) ||
               (format == HAL_PIXEL_FORMAT_YCrCb_422_SP) ||
               (format == HAL_PIXEL_FORMAT_YCbCr_422_SP)){
        return false;
    } else if (format & INTERLACE_MASK) {
        // Interlaced content
        return false;
    } else if (format & S3D_FORMAT_MASK) {
        // S3D Formats are not supported by the GPU
        return false;
    }
    return true;
}

/*
 * Function to check if the allocated buffer is of the correct size.
 * Reallocate the buffer with the correct size, if the size doesn't
 * match
 *
 * @param: handle of the allocated buffer
 * @param: requested size for the buffer
 * @param: usage flags
 *
 * return 0 on success
 */
int checkBuffer(native_handle_t *buffer_handle, int size, int usage)
{
    // If the client hasn't set a size, return
    if (0 >= size) {
        return 0;
    }

    // Validate the handle
    if (private_handle_t::validate(buffer_handle)) {
        LOGE("%s: handle is invalid", __FUNCTION__);
        return -EINVAL;
    }

    // Obtain the private_handle from the native handle
    private_handle_t *hnd = reinterpret_cast<private_handle_t*>(buffer_handle);
    if (hnd->size != size) {
        return reallocate_memory(hnd, size, usage);
    }
    return 0;
}

/*
 * Checks if memory needs to be reallocated for this buffer.
 *
 * @param: Geometry of the current buffer.
 * @param: Required Geometry.
 * @param: Geometry of the updated buffer.
 *
 * @return True if a memory reallocation is required.
 */
bool needNewBuffer(const qBufGeometry currentGeometry,
                   const qBufGeometry requiredGeometry,
                   const qBufGeometry updatedGeometry)
{
    // If the current buffer info matches the updated info,
    // we do not require any memory allocation.
    if (updatedGeometry.width && updatedGeometry.height &&
        updatedGeometry.format) {
        return false;
    }
    if (currentGeometry.width != requiredGeometry.width ||
        currentGeometry.height != requiredGeometry.height ||
        currentGeometry.format != requiredGeometry.format) {
        // Current and required geometry do not match. Allocation
        // required.
        return true;
    }
    return false;
}

/*
 * Update the geometry of this buffer without reallocation.
 *
 * @param: buffer whose geometry needs to be updated.
 * @param: Updated width
 * @param: Updated height
 * @param: Updated format
 */
int updateBufferGeometry(sp<GraphicBuffer> buffer, const qBufGeometry updatedGeometry)
{
    if (buffer == 0) {
        LOGE("%s: graphic buffer is NULL", __FUNCTION__);
        return -EINVAL;
    }

    if (!updatedGeometry.width || !updatedGeometry.height ||
        !updatedGeometry.format) {
        // No update required. Return.
        return 0;
    }
    if (buffer->width == updatedGeometry.width &&
        buffer->height == updatedGeometry.height &&
        buffer->format == updatedGeometry.format) {
        // The buffer has already been updated. Return.
        return 0;
    }

    // Validate the handle
    if (private_handle_t::validate(buffer->handle)) {
        LOGE("%s: handle is invalid", __FUNCTION__);
        return -EINVAL;
    }
    buffer->width  = updatedGeometry.width;
    buffer->height = updatedGeometry.height;
    buffer->format = updatedGeometry.format;
    private_handle_t *hnd = (private_handle_t*)(buffer->handle);
    if (hnd) {
        hnd->width  = updatedGeometry.width;
        hnd->height = updatedGeometry.height;
        hnd->format = updatedGeometry.format;
    } else {
        LOGE("%s: hnd is NULL", __FUNCTION__);
        return -EINVAL;
    }

    return 0;
}

/* Update the S3D format of this buffer.
 *
 * @param: buffer whosei S3D format needs to be updated.
 * @param: Updated buffer S3D format
 */
int updateBufferS3DFormat(sp<GraphicBuffer> buffer, const int s3dFormat)
{
    if (buffer == 0) {
        LOGE("%s: graphic buffer is NULL", __FUNCTION__);
        return -EINVAL;
    }

    buffer->format |= s3dFormat;
    return 0;
}
/*
 * Updates the flags for the layer
 *
 * @param: Attribute
 * @param: Identifies if the attribute was enabled or disabled.
 *
 * @return: -EINVAL if the attribute is invalid
 */
int updateLayerQcomFlags(eLayerAttrib attribute, bool enable, int& currentFlags)
{
    int ret = 0;
    switch (attribute) {
        case LAYER_UPDATE_STATUS: {
            if (enable)
                currentFlags |= LAYER_UPDATING;
            else
                currentFlags &= ~LAYER_UPDATING;
        } break;
        case LAYER_ASYNCHRONOUS_STATUS: {
            if (enable)
                currentFlags |= LAYER_ASYNCHRONOUS;
            else
                currentFlags &= ~LAYER_ASYNCHRONOUS;
        } break;
        default: LOGE("%s: invalid attribute(0x%x)", __FUNCTION__, attribute);
                 break;
    }
    return ret;
}

/*
 * Gets the per frame HWC flags for this layer.
 *
 * @param: current hwcl flags
 * @param: current layerFlags
 *
 * @return: the per frame flags.
 */
int getPerFrameFlags(int hwclFlags, int layerFlags) {
    int flags = hwclFlags;
    if (layerFlags & LAYER_UPDATING)
        flags &= ~HWC_LAYER_NOT_UPDATING;
    else
        flags |= HWC_LAYER_NOT_UPDATING;

    if (layerFlags & LAYER_ASYNCHRONOUS)
        flags |= HWC_LAYER_ASYNCHRONOUS;
    else
        flags &= ~HWC_LAYER_ASYNCHRONOUS;

    return flags;
}


/*
 * Checks if FB is updated by this composition type
 *
 * @param: composition type
 * @return: true if FB is updated, false if not
 */

bool isUpdatingFB(HWCCompositionType compositionType)
{
    switch(compositionType)
    {
        case HWC_USE_COPYBIT:
            return true;
        default:
            LOGE("%s: invalid composition type(%d)", __FUNCTION__, compositionType);
            return false;
    };
}

/*
 * Clear Region implementation for C2D/MDP versions.
 *
 * @param: region to be cleared
 * @param: EGL Display
 * @param: EGL Surface
 *
 * @return 0 on success
 */
int qcomuiClearRegion(Region region, EGLDisplay dpy, EGLSurface sur)
{
    int ret = 0;
    int compositionType = QCCompositionType::getInstance().getCompositionType();

    if (compositionType & COMPOSITION_TYPE_GPU ||
        (compositionType == COMPOSITION_TYPE_DYN|COMPOSITION_TYPE_C2D))
    {
        // For GPU or DYN comp. with C2D, return an error, so that SF can use
        // the GPU to draw the wormhole.
        return -1;
    }

    android_native_buffer_t *renderBuffer = (android_native_buffer_t *)
        eglGetRenderBufferANDROID(dpy, sur);
    if (!renderBuffer) {
        LOGE("%s: eglGetRenderBufferANDROID returned NULL buffer",
             __FUNCTION__);
        return -1;
    }
    private_handle_t *fbHandle = (private_handle_t *)renderBuffer->handle;
    if(!fbHandle) {
        LOGE("%s: Framebuffer handle is NULL", __FUNCTION__);
        return -1;
    }

    int bytesPerPixel = 4;
    if (HAL_PIXEL_FORMAT_RGB_565 == fbHandle->format) {
        bytesPerPixel = 2;
    }

    Region::const_iterator it = region.begin();
    Region::const_iterator const end = region.end();
    const int32_t stride = renderBuffer->stride*bytesPerPixel;
    while (it != end) {
        const Rect& r = *it++;
        uint8_t* dst = (uint8_t*) fbHandle->base +
            (r.left + r.top*renderBuffer->stride)*bytesPerPixel;
        int w = r.width()*bytesPerPixel;
        int h = r.height();
        do {
            if(4 == bytesPerPixel)
                android_memset32((uint32_t*)dst, 0, w);
            else
                android_memset16((uint16_t*)dst, 0, w);
            dst += stride;
        } while(--h);
    }
    return 0;
}

/*
 * Handles the externalDisplay event
 * HDMI has highest priority compared to WifiDisplay
 * Based on the current and the new display type, decides the
 * external display to be enabled
 *
 * @param: disp - external display type(wfd/hdmi)
 * @param: value - external event(0/1)
 * @param: currdispType - Current enabled external display Type
 * @return: external display type to be enabled
 *
 */
external_display_type handleEventHDMI(external_display_type disp, int value,
                                      external_display_type currDispType)
{
    external_display_type retDispType = currDispType;
    switch(disp) {
        case EXT_TYPE_HDMI:
            if(value)
                retDispType = EXT_TYPE_HDMI;
            else
                retDispType = EXT_TYPE_NONE;
            break;
        case EXT_TYPE_WIFI:
            if(currDispType != EXT_TYPE_HDMI) {
                if(value)
                    retDispType = EXT_TYPE_WIFI;
                else
                    retDispType = EXT_TYPE_NONE;
            }
            break;
        default:
            LOGE("%s: Unknown External Display Type!!");
            break;
    }
    return retDispType;
}

// Using global variables for layer dumping since "property_set("debug.sf.dump",
// property)" does not work.
int sfdump_countlimit_raw = 0;
int sfdump_counter_raw = 1;
char sfdump_propstr_persist_raw[PROPERTY_VALUE_MAX] = "";
char sfdumpdir_raw[256] = "";
int sfdump_countlimit_png = 0;
int sfdump_counter_png = 1;
char sfdump_propstr_persist_png[PROPERTY_VALUE_MAX] = "";
char sfdumpdir_png[256] = "";

bool needToDumpLayers()
{
    bool bDumpLayer = false;
    char sfdump_propstr[PROPERTY_VALUE_MAX];
    time_t timenow;
    tm sfdump_time;

    time(&timenow);
    localtime_r(&timenow, &sfdump_time);

    if ((property_get("debug.sf.dump.png", sfdump_propstr, NULL) > 0) &&
        (strncmp(sfdump_propstr, sfdump_propstr_persist_png,
                 PROPERTY_VALUE_MAX - 1))) {
        // Strings exist & not equal implies it has changed, so trigger a dump
        strncpy(sfdump_propstr_persist_png, sfdump_propstr,
                PROPERTY_VALUE_MAX - 1);
        sfdump_countlimit_png = atoi(sfdump_propstr);
        sfdump_countlimit_png = (sfdump_countlimit_png < 0) ? 0:
            (sfdump_countlimit_png >= LONG_MAX) ? (LONG_MAX - 1):
            sfdump_countlimit_png;
        if (sfdump_countlimit_png) {
            sprintf(sfdumpdir_png,"/data/sfdump.png%04d%02d%02d.%02d%02d%02d",
                    sfdump_time.tm_year + 1900, sfdump_time.tm_mon + 1,
                    sfdump_time.tm_mday, sfdump_time.tm_hour,
                    sfdump_time.tm_min, sfdump_time.tm_sec);
            if (0 == mkdir(sfdumpdir_png, 0777))
                sfdump_counter_png = 0;
            else
                LOGE("sfdump: Error: %s. Failed to create sfdump directory"
                     ": %s", strerror(errno), sfdumpdir_png);
        }
    }

    if (sfdump_counter_png <= sfdump_countlimit_png)
        sfdump_counter_png++;

    if ((property_get("debug.sf.dump", sfdump_propstr, NULL) > 0) &&
        (strncmp(sfdump_propstr, sfdump_propstr_persist_raw,
                 PROPERTY_VALUE_MAX - 1))) {
        // Strings exist & not equal implies it has changed, so trigger a dump
        strncpy(sfdump_propstr_persist_raw, sfdump_propstr,
                PROPERTY_VALUE_MAX - 1);
        sfdump_countlimit_raw = atoi(sfdump_propstr);
        sfdump_countlimit_raw = (sfdump_countlimit_raw < 0) ? 0:
            (sfdump_countlimit_raw >= LONG_MAX) ? (LONG_MAX - 1):
            sfdump_countlimit_raw;
        if (sfdump_countlimit_raw) {
            sprintf(sfdumpdir_raw,"/data/sfdump.raw%04d%02d%02d.%02d%02d%02d",
                    sfdump_time.tm_year + 1900, sfdump_time.tm_mon + 1,
                    sfdump_time.tm_mday, sfdump_time.tm_hour,
                    sfdump_time.tm_min, sfdump_time.tm_sec);
            if (0 == mkdir(sfdumpdir_raw, 0777))
                sfdump_counter_raw = 0;
            else
                LOGE("sfdump: Error: %s. Failed to create sfdump directory"
                     ": %s", strerror(errno), sfdumpdir_raw);
        }
    }

    if (sfdump_counter_raw <= sfdump_countlimit_raw)
        sfdump_counter_raw++;

    bDumpLayer = (sfdump_countlimit_png || sfdump_countlimit_raw)? true : false;
    return bDumpLayer;
}

inline void getHalPixelFormatStr(int format, char pixelformatstr[])
{
    if (!pixelformatstr)
        return;

    switch(format) {
        case HAL_PIXEL_FORMAT_RGBA_8888:
            strcpy(pixelformatstr, "RGBA_8888");
            break;
        case HAL_PIXEL_FORMAT_RGBX_8888:
            strcpy(pixelformatstr, "RGBX_8888");
            break;
        case HAL_PIXEL_FORMAT_RGB_888:
            strcpy(pixelformatstr, "RGB_888");
            break;
        case HAL_PIXEL_FORMAT_RGB_565:
            strcpy(pixelformatstr, "RGB_565");
            break;
        case HAL_PIXEL_FORMAT_BGRA_8888:
            strcpy(pixelformatstr, "BGRA_8888");
            break;
        case HAL_PIXEL_FORMAT_RGBA_5551:
            strcpy(pixelformatstr, "RGBA_5551");
            break;
        case HAL_PIXEL_FORMAT_RGBA_4444:
            strcpy(pixelformatstr, "RGBA_4444");
            break;
        case HAL_PIXEL_FORMAT_YV12:
            strcpy(pixelformatstr, "YV12");
            break;
        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
            strcpy(pixelformatstr, "YCbCr_422_SP_NV16");
            break;
        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
            strcpy(pixelformatstr, "YCrCb_420_SP_NV21");
            break;
        case HAL_PIXEL_FORMAT_YCbCr_422_I:
            strcpy(pixelformatstr, "YCbCr_422_I_YUY2");
            break;
        case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
            strcpy(pixelformatstr, "NV12_ENCODEABLE");
            break;
        case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
            strcpy(pixelformatstr, "YCbCr_420_SP_TILED_TILE_4x2");
            break;
        case HAL_PIXEL_FORMAT_YCbCr_420_SP:
            strcpy(pixelformatstr, "YCbCr_420_SP");
            break;
        case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
            strcpy(pixelformatstr, "YCrCb_420_SP_ADRENO");
            break;
        case HAL_PIXEL_FORMAT_YCrCb_422_SP:
            strcpy(pixelformatstr, "YCrCb_422_SP");
            break;
        case HAL_PIXEL_FORMAT_R_8:
            strcpy(pixelformatstr, "R_8");
            break;
        case HAL_PIXEL_FORMAT_RG_88:
            strcpy(pixelformatstr, "RG_88");
            break;
        case HAL_PIXEL_FORMAT_INTERLACE:
            strcpy(pixelformatstr, "INTERLACE");
            break;
        default:
            sprintf(pixelformatstr, "Unknown0x%X", format);
            break;
    }
}

void dumpLayer(int moduleCompositionType, int listFlags, size_t layerIndex,
               hwc_layer_t hwLayers[])
{
    char dumplogstr_png[128] = "";
    char dumplogstr_raw[128] = "";
    if (sfdump_counter_png <= sfdump_countlimit_png) {
        sprintf(dumplogstr_png, "[png-dump-frame: %03d of %03d] ",
                sfdump_counter_png, sfdump_countlimit_png);
    }
    if (sfdump_counter_raw <= sfdump_countlimit_raw) {
        sprintf(dumplogstr_raw, "[raw-dump-frame: %03d of %03d]",
                sfdump_counter_raw, sfdump_countlimit_raw);
    }
    if (NULL == hwLayers) {
        LOGE("sfdump: Error.%s%sLayer[%d] No hwLayers to dump.",
             dumplogstr_raw, dumplogstr_png, layerIndex);
        return;
    }
    hwc_layer *layer = &hwLayers[layerIndex];
    hwc_rect_t sourceCrop = layer->sourceCrop;
    hwc_rect_t displayFrame = layer->displayFrame;
    private_handle_t *hnd = (private_handle_t *)layer->handle;
    char pixelformatstr[32] = "None";
    uint32_t transform = layer->transform & FINAL_TRANSFORM_MASK;

    if (hnd)
        getHalPixelFormatStr(hnd->format, pixelformatstr);

    LOGE("sfdump: %s%s[%s]-Composition, Layer[%d] SrcBuff[%dx%d] "
         "SrcCrop[%dl, %dt, %dr, %db] "
         "DispFrame[%dl, %dt, %dr, %db] Composition-type = %s, Format = %s, "
         "Orientation = %s, Flags = %s%s%s%s%s%s%s%s%s%s",
         dumplogstr_raw, dumplogstr_png,
         (moduleCompositionType == COMPOSITION_TYPE_GPU)? "GPU":
         (moduleCompositionType == COMPOSITION_TYPE_MDP)? "MDP":
         (moduleCompositionType == COMPOSITION_TYPE_C2D)? "C2D":
         (moduleCompositionType == COMPOSITION_TYPE_CPU)? "CPU":
         (moduleCompositionType == COMPOSITION_TYPE_DYN)? "DYN": "???",
         layerIndex,
         (hnd)? hnd->width : -1, (hnd)? hnd->height : -1,
         sourceCrop.left, sourceCrop.top,
         sourceCrop.right, sourceCrop.bottom,
         displayFrame.left, displayFrame.top,
         displayFrame.right, displayFrame.bottom,
         (layer->compositionType == HWC_FRAMEBUFFER)? "Framebuffer (OpenGL ES)":
         (layer->compositionType == HWC_OVERLAY)? "Overlay":
         (layer->compositionType == HWC_USE_COPYBIT)? "Copybit": "???",
         pixelformatstr,
         (transform == Transform::ROT_0)? "ROT_0":
             (transform == Transform::FLIP_H)? "FLIP_H":
             (transform == Transform::FLIP_V)? "FLIP_V":
             (transform == Transform::ROT_90)? "ROT_90":
             (transform == Transform::ROT_180)? "ROT_180":
             (transform == Transform::ROT_270)? "ROT_270":
             (transform == Transform::ROT_INVALID)? "ROT_INVALID":"???",
         (layer->flags == 0)? "[None]":"",
         (layer->flags & HWC_SKIP_LAYER)? "[Skip layer]":"",
         (layer->flags & HWC_LAYER_NOT_UPDATING)? "[Layer not updating]":"",
         (layer->flags & HWC_COMP_BYPASS)? "[Bypass]":"",
         (layer->flags & HWC_BYPASS_RESERVE_0)? "[Bypass Reserve 0]":"",
         (layer->flags & HWC_BYPASS_RESERVE_1)? "[Bypass Reserve 1]":"",
         (listFlags & HWC_GEOMETRY_CHANGED)? "[List: Geometry Changed]":"",
         (listFlags & HWC_SKIP_COMPOSITION)? "[List: Skip Composition]":"");

    if (NULL == hnd) {
        LOGE("sfdump: %s%sLayer[%d] private-handle is invalid.",
             dumplogstr_raw, dumplogstr_png, layerIndex);
        return;
    }

    if ((sfdump_counter_png <= sfdump_countlimit_png) && hnd->base) {
        bool bResult = false;
        char sfdumpfile_name[256];
        SkBitmap *tempSkBmp = new SkBitmap();
        SkBitmap::Config tempSkBmpConfig = SkBitmap::kNo_Config;
        sprintf(sfdumpfile_name, "%s/sfdump%03d_layer%d.png", sfdumpdir_png,
                sfdump_counter_png, layerIndex);

        switch (hnd->format) {
            case HAL_PIXEL_FORMAT_RGBA_8888:
            case HAL_PIXEL_FORMAT_RGBX_8888:
            case HAL_PIXEL_FORMAT_BGRA_8888:
                tempSkBmpConfig = SkBitmap::kARGB_8888_Config;
                break;
            case HAL_PIXEL_FORMAT_RGB_565:
            case HAL_PIXEL_FORMAT_RGBA_5551:
            case HAL_PIXEL_FORMAT_RGBA_4444:
                tempSkBmpConfig = SkBitmap::kRGB_565_Config;
                break;
            case HAL_PIXEL_FORMAT_RGB_888:
            default:
                tempSkBmpConfig = SkBitmap::kNo_Config;
                break;
        }
        if (SkBitmap::kNo_Config != tempSkBmpConfig) {
            tempSkBmp->setConfig(tempSkBmpConfig, hnd->width, hnd->height);
            tempSkBmp->setPixels((void*)hnd->base);
            bResult = SkImageEncoder::EncodeFile(sfdumpfile_name,
                                                 *tempSkBmp, SkImageEncoder::kPNG_Type, 100);
            LOGE("sfdump: %sDumped Layer[%d] to %s: %s", dumplogstr_png,
                 layerIndex, sfdumpfile_name, bResult ? "Success" : "Fail");
        }
        else {
            LOGE("sfdump: %sSkipping Layer[%d] dump: Unsupported layer "
                 "format %s for png encoder.", dumplogstr_png, layerIndex,
                 pixelformatstr);
        }
        delete tempSkBmp; // Calls SkBitmap::freePixels() internally.
    }

    if ((sfdump_counter_raw <= sfdump_countlimit_raw) && hnd->base) {
        char sfdumpfile_name[256];
        bool bResult = false;
        sprintf(sfdumpfile_name, "%s/sfdump%03d_layer%d_%dx%d_%s.raw",
                sfdumpdir_raw,
                sfdump_counter_raw, layerIndex, hnd->width, hnd->height,
                pixelformatstr);
        FILE* fp = fopen(sfdumpfile_name, "w+");
        if (fp != NULL) {
            bResult = (bool) fwrite((void*)hnd->base, hnd->size, 1, fp);
            fclose(fp);
        }
        LOGE("sfdump: %s Dumped Layer[%d] to %s: %s", dumplogstr_raw,
             layerIndex, sfdumpfile_name, bResult ? "Success" : "Fail");
    }
}

bool needsAspectRatio (int wRatio, int hRatio) {
    return ((wRatio != DEFAULT_WIDTH_RATIO) || (hRatio != DEFAULT_HEIGHT_RATIO));
}

void applyPixelAspectRatio (int wRatio, int hRatio, int orientation, int maxWidth,
                            int maxHeight, Rect& visibleRect, GLfloat mVertices[][2]) {

    if ((wRatio == 0) || (hRatio == 0))
        return;

    float wDelta = 0;
    float hDelta = 0;
    float aspectRatio;
    float displayRatio;
    float new_width, new_height;
    float old_width = abs(visibleRect.right - visibleRect.left);
    float old_height = abs(visibleRect.bottom - visibleRect.top);

    if (orientation == Transform::ROT_INVALID) {
        // During animation, no defined orientation, rely on mTransformedBounds
        if (old_width >= old_height)
            orientation = Transform::ROT_0;
        else
            orientation = Transform::ROT_90;
    }

    switch (orientation) {

        case Transform::ROT_0:
        case Transform::ROT_180:

            // Calculated Aspect Ratio = Original Aspect Ratio x Pixel Aspect Ratio
            aspectRatio = (old_width * wRatio) / (old_height * hRatio);
            displayRatio = (float)maxWidth / (float)maxHeight;

            if (aspectRatio >= displayRatio) {
                new_height = old_width / aspectRatio;
                if (new_height > maxHeight) {
                    new_height = maxHeight;
                    new_width = new_height * aspectRatio;
                    wDelta = (new_width - old_width) / 2;
                }
                hDelta = (new_height - old_height) / 2;
            } else {
                new_width = old_height * aspectRatio;
                if (new_width > maxWidth) {
                    new_width = maxWidth;
                    new_height = new_width / aspectRatio;
                    hDelta = (new_height - old_height) / 2;
                }
                wDelta = (new_width - old_width) / 2;
            }

            if (hDelta != 0) {
                visibleRect.top -= hDelta;
                visibleRect.bottom += hDelta;

                // Set mVertices for GPU fallback (During rotation)
                if (orientation == Transform::ROT_0) {
                    mVertices[1][1] = mVertices[2][1] = visibleRect.top;
                    mVertices[0][1] = mVertices[3][1] = visibleRect.bottom;
                } else {
                    mVertices[0][1] = mVertices[3][1] = visibleRect.top;
                    mVertices[1][1] = mVertices[2][1] = visibleRect.bottom;
                }
            }

            if (wDelta != 0) {
                visibleRect.left -= wDelta;
                visibleRect.right += wDelta;

                // Set mVertices for GPU fallback (During rotation)
                mVertices[0][0] = mVertices[1][0] = visibleRect.left;
                mVertices[2][0] = mVertices[3][0] = visibleRect.right;
            }
            break;

        case Transform::ROT_90:
        case Transform::ROT_270:

            // Calculated Aspect Ratio = Original Aspect Ratio x Pixel Aspect Ratio
            aspectRatio = (old_height * wRatio) / (old_width * hRatio);
            displayRatio = (float)maxHeight / (float)maxWidth;

            if (aspectRatio >= displayRatio) {
                new_height = old_width * aspectRatio;
                if (new_height > maxHeight) {
                    new_height = maxHeight;
                    new_width = new_height / aspectRatio;
                    wDelta = (new_width - old_width) / 2;
                }
                hDelta = (new_height - old_height) / 2;
            } else {
                new_width = old_height / aspectRatio;
                if (new_width > maxWidth) {
                    new_width = maxWidth;
                    new_height = new_width * aspectRatio;
                    hDelta = (new_height - old_height) / 2;
                }
                wDelta = (new_width - old_width) / 2;
            }

            if (hDelta != 0) {
                visibleRect.top -= hDelta;
                visibleRect.bottom += hDelta;

                // Set mVertices for GPU fallback (During rotation)
                if (orientation == Transform::ROT_90) {
                    mVertices[2][1] = mVertices[3][1] = visibleRect.top;
                    mVertices[0][1] = mVertices[1][1] = visibleRect.bottom;
                } else {
                    mVertices[0][1] = mVertices[1][1] = visibleRect.top;
                    mVertices[2][1] = mVertices[3][1] = visibleRect.bottom;
                }
            }

            if (wDelta != 0) {
                visibleRect.left -= wDelta;
                visibleRect.right += wDelta;

                // Set mVertices for GPU fallback (During rotation)
                if (orientation == Transform::ROT_90) {
                    mVertices[1][0] = mVertices[2][0] = visibleRect.left;
                    mVertices[0][0] = mVertices[3][0] = visibleRect.right;
                } else {
                    mVertices[0][0] = mVertices[3][0] = visibleRect.left;
                    mVertices[1][0] = mVertices[2][0] = visibleRect.right;
                }
            }
            break;

        default: // Handled above.
            break;

    }
}