/*
 * Copyright (C) 2008 The Android Open Source Project
 * Copyright (c) 2009, Code Aurora Forum. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define LOG_TAG "Overlay"

#include <hardware/hardware.h>
#include "overlayLib.h"
#include <cutils/properties.h>
#include <cutils/ashmem.h>
#include <utils/threads.h>
#include <linux/ashmem.h>
#include <gralloc_priv.h>

using android::Mutex;

#define USE_MSM_ROTATOR
#define EVEN_OUT(x) if (x & 0x0001) {x--;}

#define SHARED_MEMORY_REGION_NAME "overlay_shared_memory"
/*****************************************************************************/

using namespace overlay;

struct overlay_control_context_t {
	struct overlay_control_device_t device;
	void *sharedMemBase;
	unsigned int format3D; //input and output 3D format, zero means no 3D
	unsigned int state;
	unsigned int orientation;
	overlay_rect posPanel;
};

struct overlay_data_context_t {
	struct overlay_data_device_t device;
	OverlayDataChannel* pobjDataChannel[2];
	unsigned int format3D;
	unsigned int state;
	bool setCrop;
	overlay_rect cropRect;
	int srcFD; //store the FD as it will needed for fb1
	int size;  //size of the overlay created
	void *sharedMemBase;
};

static int overlay_device_open(const struct hw_module_t* module, const char* name,
							   struct hw_device_t** device);

static struct hw_module_methods_t overlay_module_methods = {
	open: overlay_device_open
};

struct private_overlay_module_t {
	overlay_module_t base;
	Mutex *pobjMutex;
};

struct private_overlay_module_t HAL_MODULE_INFO_SYM = {
    base: {
	common: {
		tag: HARDWARE_MODULE_TAG,
		version_major: 1,
		version_minor: 0,
		id: OVERLAY_HARDWARE_MODULE_ID,
		name: "QCT MSM OVERLAY module",
		author: "QuIC, Inc.",
		methods: &overlay_module_methods,
	}
   },
   pobjMutex: NULL,
};

struct handle_t : public native_handle {
	int sharedMemoryFd;
	int ovid[2];
	int rotid[2];
	int size;
	int w;
	int h;
	int format;
	unsigned int format3D;
	OverlayControlChannel *pobjControlChannel[2];
};

static int handle_get_ovId(const overlay_handle_t overlay, int index = 0) {
	return static_cast<const struct handle_t *>(overlay)->ovid[index];
}

static int handle_get_rotId(const overlay_handle_t overlay, int index = 0) {
	return static_cast<const struct handle_t *>(overlay)->rotid[index];
}

static int handle_get_size(const overlay_handle_t overlay) {
	return static_cast<const struct handle_t *>(overlay)->size;
}

static int handle_get_shared_fd(const overlay_handle_t overlay) {
	return static_cast<const struct handle_t *>(overlay)->sharedMemoryFd;
}

static int handle_get_format3D(const overlay_handle_t overlay) {
	return static_cast<const struct handle_t *>(overlay)->format3D;
}

/*
 * This is the overlay_t object, it is returned to the user and represents
 * an overlay.
 * This handles will be passed across processes and possibly given to other
 * HAL modules (for instance video decode modules).
 */
class overlay_object : public overlay_t {
	handle_t mHandle;

	static overlay_handle_t getHandleRef(struct overlay_t* overlay) {
		/* returns a reference to the handle, caller doesn't take ownership */
		return &(static_cast<overlay_object *>(overlay)->mHandle);
	}

public:
	overlay_object(int w, int h, int format, int fd, unsigned int format3D = 0) {
		this->overlay_t::getHandleRef = getHandleRef;
		mHandle.version = sizeof(native_handle);
		mHandle.sharedMemoryFd = fd;
		mHandle.numFds = 1;
		mHandle.numInts = (sizeof(mHandle) - sizeof(native_handle)) / 4;
		mHandle.ovid[0] = -1;
		mHandle.ovid[1] = -1;
		mHandle.rotid[0] = -1;
		mHandle.rotid[1] = -1;
		mHandle.size = -1;
		mHandle.w = w;
		mHandle.h = h;
		mHandle.format = format;
		mHandle.format3D = format3D;
		mHandle.pobjControlChannel[0] = 0;
		mHandle.pobjControlChannel[1] = 0;
	}

	~overlay_object() {
	    destroy_overlay();
	}

	int getHwOvId(int index = 0) { return mHandle.ovid[index]; }
        int getRotSessionId(int index = 0) { return mHandle.rotid[index]; }
        int getSharedMemoryFD() {return mHandle.sharedMemoryFd;}

	bool startControlChannel(int fbnum, bool norot = false, int zorder = 0) {
	    int index = fbnum;
	    if (mHandle.format3D)
	        index = zorder;
	    if (!mHandle.pobjControlChannel[index])
	        mHandle.pobjControlChannel[index] = new OverlayControlChannel();
	    else {
	        mHandle.pobjControlChannel[index]->closeControlChannel();
	        mHandle.pobjControlChannel[index] = new OverlayControlChannel();
	    }
	    bool ret = mHandle.pobjControlChannel[index]->startControlChannel(
	             mHandle.w, mHandle.h, mHandle.format, fbnum, norot, false,
	             mHandle.format3D, zorder, true);
	    if (ret) {
	        if (!(mHandle.pobjControlChannel[index]->
			     getOvSessionID(mHandle.ovid[index]) &&
			     mHandle.pobjControlChannel[index]->
			     getRotSessionID(mHandle.rotid[index]) &&
			     mHandle.pobjControlChannel[index]->
			     getSize(mHandle.size)))
	            ret = false;
	    }

	    if (!ret) {
	        closeControlChannel(index);
	    }

	    return ret;
	}

	bool setPosition(int x, int y, uint32_t w, uint32_t h, int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->setPosition(
	                     x, y, w, h);
	}

	bool getAspectRatioPosition(overlay_rect *rect, int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->getAspectRatioPosition(mHandle.w,
	                     mHandle.h, mHandle.format, rect);
	}

	bool setParameter(int param, int value, int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->setParameter(
	                     param, value);
	}

	bool closeControlChannel(int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return true;
	    bool ret = mHandle.pobjControlChannel[channel]->
	                  closeControlChannel();
	    delete mHandle.pobjControlChannel[channel];
	    mHandle.pobjControlChannel[channel] = 0;
	    return ret;
	}

	bool getPositionS3D(overlay_rect *rect, int channel) {
	    if (!mHandle.pobjControlChannel[channel]) {
	        LOGE("%s:Failed got channel %d", __func__, channel);
	        return false;
	    }

	    return mHandle.pobjControlChannel[channel]->getPositionS3D(
	                     channel, mHandle.format3D, rect);
	}

	bool getPosition(int *x, int *y, uint32_t *w, uint32_t *h, int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->getPosition(
	                     *x, *y, *w, *h);
	}

	bool getOrientation(int *orientation, int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->getOrientation(
	                     *orientation);
	}

	void destroy_overlay() {
	    close(mHandle.sharedMemoryFd);
	    closeControlChannel(0);
	    closeControlChannel(1);
	    send3DInfoPacket (0);
	}

	int getFBWidth(int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->getFBWidth();
	}

	int getFBHeight(int channel) {
	    if (!mHandle.pobjControlChannel[channel])
	        return false;
	    return mHandle.pobjControlChannel[channel]->getFBHeight();
	}

	inline void setFormat3D(unsigned int format3D) {
	    mHandle.format3D = format3D;
	}
};

// ****************************************************************************
// Control module
// ****************************************************************************

	static int overlay_get(struct overlay_control_device_t *dev, int name) {
		int result = -1;
		switch (name) {
			case OVERLAY_MINIFICATION_LIMIT:
				result = HW_OVERLAY_MINIFICATION_LIMIT;
				break;
			case OVERLAY_MAGNIFICATION_LIMIT:
				result = HW_OVERLAY_MAGNIFICATION_LIMIT;
				break;
			case OVERLAY_SCALING_FRAC_BITS:
				result = 32;
				break;
			case OVERLAY_ROTATION_STEP_DEG:
				result = 90; // 90 rotation steps (for instance)
				break;
			case OVERLAY_HORIZONTAL_ALIGNMENT:
				result = 1;	// 1-pixel alignment
				break;
			case OVERLAY_VERTICAL_ALIGNMENT:
				result = 1;	// 1-pixel alignment
				break;
			case OVERLAY_WIDTH_ALIGNMENT:
				result = 1;	// 1-pixel alignment
				break;
			case OVERLAY_HEIGHT_ALIGNMENT:
				result = 1;	// 1-pixel alignment
				break;
		}
		return result;
	}

	static void error_cleanup_control(overlay_control_context_t *ctx, overlay_object *overlay, int fd, int index) {
		LOGE("Failed to start control channel %d", index);
		for (int i = 0; i < index; i++)
			overlay->closeControlChannel(i);
		if(ctx && (ctx->sharedMemBase != MAP_FAILED)) {
			munmap(ctx->sharedMemBase, sizeof(overlay_shared_data));
			ctx->sharedMemBase = MAP_FAILED;
		}
		if(fd > 0)
			close(fd);
		delete overlay;
	}

	static overlay_t* overlay_createOverlay(struct overlay_control_device_t *dev,
											uint32_t w, uint32_t h, int32_t format) {
		overlay_object            *overlay = NULL;
		overlay_control_context_t *ctx = (overlay_control_context_t *)dev;
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);

		// Open shared memory to store shared data
		int size = sizeof(overlay_shared_data);
		void *base;
		int fd = ashmem_create_region(SHARED_MEMORY_REGION_NAME,
				size);
		if(fd < 0) {
			LOGE("%s: create shared memory failed", __func__);
			return NULL;
		}
		if (ashmem_set_prot_region(fd, PROT_READ | PROT_WRITE) < 0) {
			LOGE("ashmem_set_prot_region(fd=%d, failed (%s)",
				fd, strerror(-errno));
			close(fd);
			fd = -1;
			return NULL;
		} else {
			base = mmap(0, size, PROT_READ | PROT_WRITE,
				MAP_SHARED|MAP_POPULATE, fd, 0);
			if (base == MAP_FAILED) {
				LOGE("alloc mmap(fd=%d, size=%d) failed (%s)",
					fd, size, strerror(-errno));
				close(fd);
				fd = -1;
				return NULL;
			}
		}

		// Separate the color format from the 3D format.
		// If there is 3D content; the effective format passed by the client is:
		// effectiveFormat = 3D_IN | 3D_OUT | ColorFormat
		unsigned int format3D = FORMAT_3D(format);
		format = COLOR_FORMAT(format);
		int fIn3D = FORMAT_3D_INPUT(format3D); // MSB 2 bytes are input format
		int fOut3D = FORMAT_3D_OUTPUT(format3D); // LSB 2 bytes are output format
		format3D = fIn3D | fOut3D;
		// Use the same in/out format if not mentioned
		if (!fIn3D) {
			format3D |= fOut3D << SHIFT_3D; //Set the input format
		}
		if(!fOut3D) {
			switch (fIn3D) {
			case HAL_3D_IN_SIDE_BY_SIDE_L_R:
			case HAL_3D_IN_SIDE_BY_SIDE_R_L:
				// For all side by side formats, set the output
				// format as Side-by-Side i.e 0x1
				format3D |= HAL_3D_IN_SIDE_BY_SIDE_L_R >> SHIFT_3D;
				break;
			default:
				format3D |= fIn3D >> SHIFT_3D; //Set the output format
				break;
			}
		}
		unsigned int curState = overlay::getOverlayConfig(format3D);
		if (curState == OV_3D_VIDEO_2D_PANEL || curState == OV_3D_VIDEO_2D_TV) {
			LOGI("3D content on 2D display: set the output format as monoscopic");
			format3D = FORMAT_3D_INPUT(format3D) | HAL_3D_OUT_MONOSCOPIC_MASK;
		}
		LOGD("createOverlay: creating overlay with format3D: 0x%x, curState: %d", format3D, curState);
		ctx->sharedMemBase = base;
		ctx->format3D = format3D;
		ctx->state = curState;
		memset(ctx->sharedMemBase, 0, size);

		/* number of buffer is not being used as overlay buffers are coming from client */
		overlay = new overlay_object(w, h, format, fd, format3D);
		if (overlay == NULL) {
			LOGE("%s: can't create overlay object!", __FUNCTION__);
			if(ctx && (ctx->sharedMemBase != MAP_FAILED)) {
				munmap(ctx->sharedMemBase, size);
				ctx->sharedMemBase = MAP_FAILED;
			}
			if(fd > 0)
				close(fd);
			return NULL;
		}
		bool noRot;
#ifdef USE_MSM_ROTATOR
		noRot = false;
#else
		noRot = true;
#endif
		switch (ctx->state) {
		case OV_2D_VIDEO_ON_PANEL:
		case OV_3D_VIDEO_2D_PANEL:
			if (!overlay->startControlChannel(FRAMEBUFFER_0, noRot)) {
				error_cleanup_control(ctx, overlay, fd, FRAMEBUFFER_0);
				return NULL;
			}
			break;
		case OV_2D_VIDEO_ON_TV:
		case OV_3D_VIDEO_2D_TV:
			if (!overlay->startControlChannel(FRAMEBUFFER_0, noRot, VG0_PIPE)) {
				error_cleanup_control(ctx, overlay, fd, VG0_PIPE);
				return NULL;
			}
			if (!overlay->startControlChannel(FRAMEBUFFER_1, true, VG1_PIPE)) {
				error_cleanup_control(ctx, overlay, fd, VG1_PIPE);
				return NULL;
			}
			break;
		case OV_3D_VIDEO_3D_TV:
			for (int i=0; i<NUM_CHANNELS; i++) {
				if (!overlay->startControlChannel(FRAMEBUFFER_1, true, i)) {
					error_cleanup_control(ctx, overlay, fd, i);
					return NULL;
				}
			}
			break;
		default:
			break;
		}
		overlay_shared_data* data = static_cast<overlay_shared_data*>(ctx->sharedMemBase);
		data->state = ctx->state;
		for (int i=0; i<NUM_CHANNELS; i++) {
			data->ovid[i]  = overlay->getHwOvId(i);
			data->rotid[i] = overlay->getRotSessionId(i);
		}
		return overlay;
	}

	static void overlay_destroyOverlay(struct overlay_control_device_t *dev,
									   overlay_t* overlay)
	{
		overlay_control_context_t *ctx = (overlay_control_context_t *)dev;
		overlay_object * obj = static_cast<overlay_object *>(overlay);
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);
		if(ctx && (ctx->sharedMemBase != MAP_FAILED)) {
			munmap(ctx->sharedMemBase, sizeof(overlay_shared_data));
			ctx->sharedMemBase = MAP_FAILED;
		}
		obj->destroy_overlay();
		delete overlay;
	}

	static int overlay_setPosition(struct overlay_control_device_t *dev,
								   overlay_t* overlay,
								   int x, int y, uint32_t w, uint32_t h) {
		/* set this overlay's position (talk to the h/w) */
		overlay_control_context_t *ctx = (overlay_control_context_t *)dev;
		overlay_object * obj = static_cast<overlay_object *>(overlay);
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);
		bool ret;
		overlay_rect rect;
		// saving the position for the disconnection event
		ctx->posPanel.x = x;
		ctx->posPanel.y = y;
		ctx->posPanel.w = w;
		ctx->posPanel.h = h;

		switch (ctx->state) {
		case OV_2D_VIDEO_ON_PANEL:
		case OV_3D_VIDEO_2D_PANEL:
			if(!obj->setPosition(x, y, w, h, VG0_PIPE)) {
				LOGE("%s:Failed for channel 0", __func__);
				return -1;
			}
			break;
		case OV_2D_VIDEO_ON_TV:
			if(!obj->setPosition(x, y, w, h, VG0_PIPE)) {
				LOGE("%s:Failed for channel 0", __func__);
				return -1;
			}
			obj->getAspectRatioPosition(&rect, VG1_PIPE);
			if(!obj->setPosition(rect.x, rect.y, rect.w, rect.h, VG1_PIPE)) {
				LOGE("%s:Failed for channel 1", __func__);
				return -1;
			}
			break;
		case OV_3D_VIDEO_2D_TV:
		case OV_3D_VIDEO_3D_TV:
			for (int i = 0; i < NUM_CHANNELS; i++) {
				if (!obj->getPositionS3D(&rect, i))
					ret = obj->setPosition(x, y, w, h, i);
				else
					ret = obj->setPosition(rect.x, rect.y, rect.w, rect.h, i);
				if (!ret) {
					LOGE("%s:Failed for channel %d", __func__, i);
					return -1;
				}
			}
			break;
		default:
			break;
		}
		return 0;
	}

	static int overlay_commit(struct overlay_control_device_t *dev,
								   overlay_t* overlay)
	{
		overlay_control_context_t *ctx = (overlay_control_context_t *)dev;
		overlay_object *obj = static_cast<overlay_object *>(overlay);
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);

		Mutex::Autolock objLock(m->pobjMutex);
		if (obj && (obj->getSharedMemoryFD() > 0) &&
			(ctx->sharedMemBase != MAP_FAILED)) {
			overlay_shared_data data;
			data.readyToQueue = 1;
			memcpy(ctx->sharedMemBase, (void*)&data, sizeof(overlay_shared_data));
		}
		return 0;
	}

	static int overlay_getPosition(struct overlay_control_device_t *dev,
								   overlay_t* overlay,
								   int* x, int* y, uint32_t* w, uint32_t* h) {

		/* get this overlay's position */
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);
		overlay_object * obj = static_cast<overlay_object *>(overlay);
		return obj->getPosition(x, y, w, h, 0) ? 0 : -1;
	}
#if 0
	static bool overlay_configPipes(overlay_control_context_t *ctx,
									overlay_object *obj, int enable,
									unsigned int curState) {
		bool noRot = true;
		overlay_rect rect;
#ifdef USE_MSM_ROTATOR
		noRot = false;
#else
		noRot = true;
#endif
		if(enable) {
			if( (ctx->state == OV_2D_VIDEO_ON_PANEL) ||
				(ctx->state == OV_3D_VIDEO_2D_PANEL && curState == OV_3D_VIDEO_2D_TV) ) {
				LOGI("2D TV connected, Open a new control channel for TV.");
				//Start a new channel for mirroring on HDMI
				if (!obj->startControlChannel(FRAMEBUFFER_1, true, VG1_PIPE)) {
					obj->closeControlChannel(FRAMEBUFFER_1);
					return false;
				}
				if (ctx->format3D)
					obj->getPositionS3D(&rect, FRAMEBUFFER_1);
				else
					obj->getAspectRatioPosition(&rect, FRAMEBUFFER_1);
				if(!obj->setPosition(rect.x, rect.y, rect.w, rect.h, FRAMEBUFFER_1)) {
					LOGE("%s:Failed to set position for framebuffer 1", __func__);
					return false;
				}
			} else if( (ctx->state == OV_3D_VIDEO_2D_PANEL && curState == OV_3D_VIDEO_3D_TV) ) {
				LOGI("3D TV connected, close old ctl channel and open two ctl channels for 3DTV.");
				//close the channel 0 as it is configured for panel
				obj->closeControlChannel(FRAMEBUFFER_0);
				//update the output from monoscopic to stereoscopic
				ctx->format3D = FORMAT_3D_INPUT(ctx->format3D) | ctx->format3D >> SHIFT_3D;
				obj->setFormat3D(ctx->format3D);
				LOGI("Control: new S3D format : 0x%x", ctx->format3D);
				//now open both the channels
				for (int i = 0; i < NUM_CHANNELS; i++) {
					if (!obj->startControlChannel(FRAMEBUFFER_1, true, i)) {
						LOGE("%s:Failed to open control channel for pipe %d", __func__, i);
						return false;
					}
					obj->getPositionS3D(&rect, i);
					if(!obj->setPosition(rect.x, rect.y, rect.w, rect.h, i)) {
						LOGE("%s: failed for channel %d", __func__, i);
						return false;
					}
				}
			}
		} else {
			if ( (ctx->state == OV_2D_VIDEO_ON_TV) ||
				(ctx->state == OV_3D_VIDEO_2D_TV && curState == OV_3D_VIDEO_2D_PANEL) ) {
				LOGI("2D TV disconnected, close the control channel.");
				obj->closeControlChannel(VG1_PIPE);
			} else if (ctx->state == OV_3D_VIDEO_3D_TV && curState == OV_3D_VIDEO_2D_PANEL) {
				LOGI("3D TV disconnected, close the control channels & open one for panel.");
				// Close both the pipes' control channel
				obj->closeControlChannel(VG0_PIPE);
				obj->closeControlChannel(VG1_PIPE);
				//update the format3D as monoscopic
				ctx->format3D = FORMAT_3D_INPUT(ctx->format3D) | HAL_3D_OUT_MONOSCOPIC_MASK;
				obj->setFormat3D(ctx->format3D);
				LOGI("Control: New format3D: 0x%x", ctx->format3D);
				//now open the channel 0
				if (!obj->startControlChannel(FRAMEBUFFER_0, noRot)) {
					LOGE("%s:Failed to open control channel for pipe 0", __func__);
					return false;
				}
				if(!obj->setPosition(ctx->posPanel.x, ctx->posPanel.y, ctx->posPanel.w, ctx->posPanel.h, FRAMEBUFFER_0)) {
					LOGE("%s:Failed to set position for framebuffer 0", __func__);
					return false;
				}
				if (!obj->setParameter(OVERLAY_TRANSFORM, ctx->orientation, VG0_PIPE)) {
					LOGE("%s: Failed to set orienatation for channel 0", __func__);
					return -1;
				}
			}
		}
		//update the context's state
		ctx->state = curState;
		return true;
	}
#endif
	static int overlay_setParameter(struct overlay_control_device_t *dev,
									overlay_t* overlay, int param, int value) {

		overlay_control_context_t *ctx = (overlay_control_context_t *)dev;
		overlay_object *obj = static_cast<overlay_object *>(overlay);
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);

		if (obj && (obj->getSharedMemoryFD() > 0) &&
			(ctx->sharedMemBase != MAP_FAILED)) {
			overlay_shared_data* data = static_cast<overlay_shared_data*>(ctx->sharedMemBase);
			data->readyToQueue = 0;
#if 0
                        /* SF will inform Overlay HAL the HDMI cable connection.
			   This avoids polling on the system property hw.hdmiON */
			if(param == OVERLAY_HDMI_ENABLE) {
				unsigned int curState = getOverlayConfig(ctx->format3D);
				if(ctx->state != curState) {
					LOGI("Overlay Configured for : %d Current state: %d", ctx->state, curState);
					if(!overlay_configPipes(ctx, obj, value, curState)) {
						LOGE("In overlay_setParameter: reconfiguring of Overlay failed !!");
						return -1;
					}
					else {
						data->state = ctx->state;
						for (int i=0; i<NUM_CHANNELS; i++) {
							data->ovid[i]  = obj->getHwOvId(i);
							data->rotid[i] = obj->getRotSessionId(i);
						}
					}
				}
			}
#endif
		}
//		if(param != OVERLAY_HDMI_ENABLE)
                {
			//Save the panel orientation
			if (param == OVERLAY_TRANSFORM)
				ctx->orientation = value;
			switch (ctx->state) {
			case OV_2D_VIDEO_ON_PANEL:
			case OV_3D_VIDEO_2D_PANEL:
				if(!obj->setParameter(param, value, VG0_PIPE)) {
					LOGE("%s: Failed for channel 0", __func__);
					return -1;
				}
				break;
			case OV_2D_VIDEO_ON_TV:
			case OV_3D_VIDEO_2D_TV:
			case OV_3D_VIDEO_3D_TV:
				for (int i=0; i<NUM_CHANNELS; i++) {
					if(!obj->setParameter(param, value, i)) {
						LOGE("%s: Failed for channel %d", __func__, i);
						return -1;
					}
				}
				break;
			default:
				break;
			}
		}
		return 0;
	}

	static int overlay_control_close(struct hw_device_t *dev)
	{
		struct overlay_control_context_t* ctx = (struct overlay_control_context_t*)dev;
		if (ctx) {
			/* free all resources associated with this device here
			 * in particular the overlay_handle_t, outstanding overlay_t, etc...
			 */
			free(ctx);
		}
		return 0;
	}

// ****************************************************************************
// Data module
// ****************************************************************************

	static void error_cleanup_data(struct overlay_data_context_t* ctx, int index)
	{
		LOGE("Couldn't start data channel %d", index);
		for (int i = 0; i<index; i++) {
			delete ctx->pobjDataChannel[i];
			ctx->pobjDataChannel[i] = NULL;
		}
	}

	int overlay_initialize(struct overlay_data_device_t *dev,
						   overlay_handle_t handle)
	{
		/*
		 * overlay_handle_t should contain all the information to "inflate" this
		 * overlay. Typically it'll have a file descriptor, informations about
		 * how many buffers are there, etc...
		 * It is also the place to mmap all buffers associated with this overlay
		 * (see getBufferAddress).
		 *
		 * NOTE: this function doesn't take ownership of overlay_handle_t
		 *
		 */

		struct overlay_data_context_t* ctx = (struct overlay_data_context_t*)dev;
		int ovid = handle_get_ovId(handle);
		int rotid = handle_get_rotId(handle);
		int size = handle_get_size(handle);
		int sharedFd = handle_get_shared_fd(handle);
		unsigned int format3D = handle_get_format3D(handle);
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);
		bool noRot = true;
#ifdef USE_MSM_ROTATOR
		noRot = false;
#else
		noRot = true;
#endif
		//default: set crop info to src size.
		ctx->cropRect.x = 0;
		ctx->cropRect.y = 0;
		//ctx->cropRect.w = handle_get_width(handle);
		//ctx->cropRect.h = handle_get_height(handle);
		ctx->sharedMemBase = MAP_FAILED;
		ctx->format3D = format3D;

		if(sharedFd > 0) {
			void *base = mmap(0, sizeof(overlay_shared_data), PROT_READ,
					MAP_SHARED|MAP_POPULATE, sharedFd, 0);
			if(base == MAP_FAILED) {
				LOGE("%s: map region failed %d", __func__, -errno);
				return -1;
			}
			ctx->sharedMemBase = base;
		} else {
			LOGE("Received invalid shared memory fd");
			return -1;
		}
		overlay_shared_data* data = static_cast<overlay_shared_data*>
                    (ctx->sharedMemBase);
		if (data == NULL){
			LOGE("%s:Shared data is NULL!!", __func__);
			return -1;
		}
		ctx->state = data->state;
		switch (ctx->state) {
		case OV_2D_VIDEO_ON_PANEL:
		case OV_3D_VIDEO_2D_PANEL:
			ctx->pobjDataChannel[VG0_PIPE] = new OverlayDataChannel();
			if (!ctx->pobjDataChannel[VG0_PIPE]->startDataChannel(ovid, rotid, size, FRAMEBUFFER_0, noRot)) {
				error_cleanup_data(ctx, VG0_PIPE);
				return -1;
			}
			//setting the crop value
			if(!ctx->pobjDataChannel[VG0_PIPE]->setCrop(
							ctx->cropRect.x,ctx->cropRect.y,
							ctx->cropRect.w,ctx->cropRect.h)) {
				LOGE("%s:failed to crop pipe 0", __func__);
			}
			break;
		case OV_2D_VIDEO_ON_TV:
		case OV_3D_VIDEO_2D_TV:
			for (int i = 0; i < NUM_CHANNELS; i++) {
				ovid = handle_get_ovId(handle, i);
				rotid = handle_get_rotId(handle, i);
				ctx->pobjDataChannel[i] = new OverlayDataChannel();
				if (!ctx->pobjDataChannel[i]->startDataChannel(ovid, rotid, size, i, true)) {
					error_cleanup_data(ctx, i);
					return -1;
				}
				//setting the crop value
				if(!ctx->pobjDataChannel[i]->setCrop(
								ctx->cropRect.x,ctx->cropRect.y,
								ctx->cropRect.w,ctx->cropRect.h)) {
					LOGE("%s:failed to crop pipe %d", __func__, i);
				}
			}
			break;
		case OV_3D_VIDEO_3D_TV:
			overlay_rect rect;
			for (int i = 0; i < NUM_CHANNELS; i++) {
				ovid = handle_get_ovId(handle, i);
				rotid = handle_get_rotId(handle, i);
				ctx->pobjDataChannel[i] = new OverlayDataChannel();
				if (!ctx->pobjDataChannel[i]->startDataChannel(ovid, rotid, size, FRAMEBUFFER_1, true)) {
					error_cleanup_data(ctx, i);
					return -1;
				}
				ctx->pobjDataChannel[i]->getCropS3D(&ctx->cropRect, i, ctx->format3D, &rect);
				if (!ctx->pobjDataChannel[i]->setCrop(rect.x, rect.y, rect.w, rect.h)) {
					LOGE("%s: Failed to crop channel %d", __func__, i);
					//return -1;
				}
			}
			if(!send3DInfoPacket(ctx->format3D & OUTPUT_MASK_3D))
				LOGI("%s:Error setting the 3D mode for TV", __func__);
			break;
		default:
			break;
		}
		return 0;
	}

	int overlay_dequeueBuffer(struct overlay_data_device_t *dev,
							  overlay_buffer_t* buf)
	{
		/* blocks until a buffer is available and return an opaque structure
		 * representing this buffer.
		 */

		/* no internal overlay buffer to dequeue */
		LOGE("%s: no buffer to dequeue ...\n", __FUNCTION__);

		return 0;
	}

	int overlay_queueBuffer(struct overlay_data_device_t *dev,
							overlay_buffer_t buffer)
	{
		/* Mark this buffer for posting and recycle or free overlay_buffer_t. */
		struct overlay_data_context_t *ctx = (struct overlay_data_context_t*)dev;
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		Mutex::Autolock objLock(m->pobjMutex);
		bool noRot = true;
#ifdef USE_MSM_ROTATOR
		noRot = false;
#else
		noRot = true;
#endif
		// Check if readyToQueue is enabled.
		overlay_shared_data data;
		if(ctx->sharedMemBase != MAP_FAILED)
			memcpy(&data, ctx->sharedMemBase, sizeof(data));
		else
			return false;

		if(!data.readyToQueue) {
			LOGE("Overlay is not ready to queue buffers");
			return -1;
		}
#if 0
		if(data->state != ctx->state) {
			LOGI("Data: State has changed from %d to %d", ctx->state, data->state);
			if( (ctx->state == OV_2D_VIDEO_ON_PANEL) ||
				(ctx->state == OV_3D_VIDEO_2D_PANEL && data->state == OV_3D_VIDEO_2D_TV) ) {
				LOGI("2D TV connected, Open a new data channel for TV.");
				//Start a new channel for mirroring on HDMI
				ctx->pobjDataChannel[VG1_PIPE] = new OverlayDataChannel();
				if (!ctx->pobjDataChannel[VG1_PIPE]->startDataChannel(
						data->ovid[VG1_PIPE], data->rotid[VG1_PIPE], ctx->size,
						FRAMEBUFFER_1, true)) {
					delete ctx->pobjDataChannel[VG1_PIPE];
					ctx->pobjDataChannel[VG1_PIPE] = NULL;
					return -1;
				}
				//setting the crop value
				if(ctx->format3D) {
					overlay_rect rect;
					ctx->pobjDataChannel[VG1_PIPE]->getCropS3D(&ctx->cropRect, VG1_PIPE, ctx->format3D, &rect);
					if (!ctx->pobjDataChannel[VG1_PIPE]->setCrop(rect.x, rect.y, rect.w, rect.h)) {
						LOGE("%s: Failed to crop pipe 1", __func__);
					}
				} else {
					if(!ctx->pobjDataChannel[VG1_PIPE]->setCrop(
								ctx->cropRect.x,ctx->cropRect.y,
								ctx->cropRect.w,ctx->cropRect.h)) {
						LOGE("%s:failed to crop pipe 1", __func__);
					}
				}
				//setting the srcFD
				if (!ctx->pobjDataChannel[VG1_PIPE]->setFd(ctx->srcFD)) {
					LOGE("%s: Failed to set fd for pipe 1", __func__);
					return -1;
				}
			} else if( (ctx->state == OV_3D_VIDEO_2D_PANEL && data->state == OV_3D_VIDEO_3D_TV) ) {
				LOGI("3D TV connected, close data channel and open both data channels for 3DTV.");
				//close the channel 0 as it is configured for panel
				ctx->pobjDataChannel[VG0_PIPE]->closeDataChannel();
				delete ctx->pobjDataChannel[VG0_PIPE];
				ctx->pobjDataChannel[VG0_PIPE] = NULL;
				//update the output from monoscopic to stereoscopic
				ctx->format3D = FORMAT_3D_INPUT(ctx->format3D) | ctx->format3D >> SHIFT_3D;
				LOGI("Data: New S3D format : 0x%x", ctx->format3D);
				//now open both the channels
				overlay_rect rect;
				for (int i = 0; i < NUM_CHANNELS; i++) {
					ctx->pobjDataChannel[i] = new OverlayDataChannel();
					if (!ctx->pobjDataChannel[i]->startDataChannel(
							data->ovid[i], data->rotid[i], ctx->size,
							FRAMEBUFFER_1, true)) {
						error_cleanup_data(ctx, i);
						return -1;
					}
					ctx->pobjDataChannel[i]->getCropS3D(&ctx->cropRect, i, ctx->format3D, &rect);
					if (!ctx->pobjDataChannel[i]->setCrop(rect.x, rect.y, rect.w, rect.h)) {
						LOGE("%s: Failed to crop pipe %d", __func__, i);
						return -1;
					}
					if (!ctx->pobjDataChannel[i]->setFd(ctx->srcFD)) {
						LOGE("%s: Failed to set fd for pipe %d", __func__, i);
						return -1;
					}
				}
				send3DInfoPacket(ctx->format3D & OUTPUT_MASK_3D);
			} else if( (ctx->state == OV_2D_VIDEO_ON_TV) ||
					(ctx->state == OV_3D_VIDEO_2D_TV && data->state == OV_3D_VIDEO_2D_PANEL) ) {
				LOGI("2D TV disconnected, close the data channel for TV.");
				ctx->pobjDataChannel[VG1_PIPE]->closeDataChannel();
				delete ctx->pobjDataChannel[VG1_PIPE];
				ctx->pobjDataChannel[VG1_PIPE] = NULL;
			} else if (ctx->state == OV_3D_VIDEO_3D_TV && data->state == OV_3D_VIDEO_2D_PANEL) {
				LOGI("3D TV disconnected, close the data channels for 3DTV and open one for panel.");
				// Close both the pipes' data channel
				for (int i = 0; i < NUM_CHANNELS; i++) {
					ctx->pobjDataChannel[i]->closeDataChannel();
					delete ctx->pobjDataChannel[i];
					ctx->pobjDataChannel[i] = NULL;
				}
				send3DInfoPacket(0);
				//update the format3D as monoscopic
				ctx->format3D = FORMAT_3D_INPUT(ctx->format3D) | HAL_3D_OUT_MONOSCOPIC_MASK;
				//now open the channel 0
				ctx->pobjDataChannel[VG0_PIPE] = new OverlayDataChannel();
				if (!ctx->pobjDataChannel[VG0_PIPE]->startDataChannel(
						data->ovid[VG0_PIPE], data->rotid[VG0_PIPE], ctx->size,
						FRAMEBUFFER_0, noRot)) {
					error_cleanup_data(ctx, VG0_PIPE);
					return -1;
				}
				overlay_rect rect;
				ctx->pobjDataChannel[VG0_PIPE]->getCropS3D(&ctx->cropRect, VG0_PIPE, ctx->format3D, &rect);
				//setting the crop value
				if(!ctx->pobjDataChannel[VG0_PIPE]->setCrop( rect.x, rect.y,rect.w, rect.h)) {
					LOGE("%s:failed to crop pipe 0", __func__);
				}
				//setting the srcFD
				if (!ctx->pobjDataChannel[VG0_PIPE]->setFd(ctx->srcFD)) {
					LOGE("%s: Failed set fd for pipe 0", __func__);
					return -1;
				}
			}
			//update the context's state
			ctx->state = data->state;
		}
#endif
		switch (ctx->state) {
		case OV_2D_VIDEO_ON_PANEL:
			if (ctx->setCrop) {
				if(!ctx->pobjDataChannel[VG0_PIPE]->setCrop(ctx->cropRect.x, ctx->cropRect.y, ctx->cropRect.w, ctx->cropRect.h)) {
					LOGE("%s: failed for pipe 0", __func__);
				}
				ctx->setCrop = false;
			}
			if(!ctx->pobjDataChannel[VG0_PIPE]->queueBuffer((uint32_t) buffer)) {
				LOGE("%s: failed for VG pipe 0", __func__);
				return -1;
			}
			break;
		case OV_3D_VIDEO_2D_PANEL:
			if (ctx->setCrop) {
				overlay_rect rect;
				ctx->pobjDataChannel[VG0_PIPE]->getCropS3D(&ctx->cropRect, VG0_PIPE, ctx->format3D, &rect);
				if(!ctx->pobjDataChannel[VG0_PIPE]->setCrop(rect.x, rect.y, rect.w, rect.h)) {
					LOGE("%s: failed for pipe 0", __func__);
				}
				ctx->setCrop = false;
			}
			if(!ctx->pobjDataChannel[VG0_PIPE]->queueBuffer((uint32_t) buffer)) {
				LOGE("%s: failed for VG pipe 0", __func__);
				return -1;
			}
			break;
		case OV_2D_VIDEO_ON_TV:
		case OV_3D_VIDEO_2D_TV:
		case OV_3D_VIDEO_3D_TV:
			for (int i=0; i<NUM_CHANNELS; i++) {
				if(!ctx->pobjDataChannel[i]->queueBuffer((uint32_t) buffer)) {
					LOGE("%s: failed for VG pipe %d", __func__, i);
					return -1;
				}
			}
			break;
		default:
			break;
		}

		return -1;
	}

	int overlay_setFd(struct overlay_data_device_t *dev, int fd)
	{
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		struct overlay_data_context_t* ctx = (struct overlay_data_context_t*)dev;
		Mutex::Autolock objLock(m->pobjMutex);
		ctx->srcFD = fd;
		switch (ctx->state) {
		case OV_2D_VIDEO_ON_PANEL:
		case OV_3D_VIDEO_2D_PANEL:
			if(!ctx->pobjDataChannel[VG0_PIPE]->setFd(fd)) {
				LOGE("%s: failed for VG pipe 0", __func__);
				return -1;
			}
			break;
		case OV_2D_VIDEO_ON_TV:
		case OV_3D_VIDEO_2D_TV:
		case OV_3D_VIDEO_3D_TV:
			for (int i=0; i<NUM_CHANNELS; i++) {
				if(!ctx->pobjDataChannel[i]->setFd(fd)) {
					LOGE("%s: failed for  pipe %d", __func__, i);
					return -1;
				}
			}
			break;
		default:
			break;
		}
		return 0;
	}

	static int overlay_setCrop(struct overlay_data_device_t *dev, uint32_t x,
                           uint32_t y, uint32_t w, uint32_t h)
	{
		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>(
		                        dev->common.module);
		struct overlay_data_context_t* ctx = (struct overlay_data_context_t*)dev;
		Mutex::Autolock objLock(m->pobjMutex);
		overlay_rect rect;
		ctx->cropRect.x = x;
		ctx->cropRect.y = y;
		ctx->cropRect.w = w;
		ctx->cropRect.h = h;
		switch (ctx->state) {
		case OV_2D_VIDEO_ON_PANEL:
		case OV_3D_VIDEO_2D_PANEL:
			ctx->setCrop = true;
			break;
		case OV_2D_VIDEO_ON_TV:
			for (int i=0; i<NUM_CHANNELS; i++) {
				if(!ctx->pobjDataChannel[i]->setCrop(x, y, w, h)) {
					LOGE("%s: failed for pipe %d", __func__, i);
					return -1;
				}
			}
			break;
		case OV_3D_VIDEO_2D_TV:
		case OV_3D_VIDEO_3D_TV:
			for (int i=0; i<NUM_CHANNELS; i++) {
				ctx->pobjDataChannel[i]->getCropS3D(&ctx->cropRect, i, ctx->format3D, &rect);
				if(!ctx->pobjDataChannel[i]->setCrop(rect.x, rect.y, rect.w, rect.h)) {
					LOGE("%s: failed for pipe %d", __func__, i);
					return -1;
				}
			}
			break;
		default:
			break;
		}
                return 0;
	}

	void *overlay_getBufferAddress(struct overlay_data_device_t *dev,
								   overlay_buffer_t buffer)
	{
		/* overlay buffers are coming from client */
		return( NULL );
	}

	int overlay_getBufferCount(struct overlay_data_device_t *dev)
	{
		return 0;
	}


	static int overlay_data_close(struct hw_device_t *dev)
	{
		struct overlay_data_context_t* ctx = (struct overlay_data_context_t*)dev;
		if (ctx) {
			/* free all resources associated with this device here
			 * in particular all pending overlay_buffer_t if needed.
			 *
			 * NOTE: overlay_handle_t passed in initialize() is NOT freed and
			 * its file descriptors are not closed (this is the responsibility
			 * of the caller).
			 */

			if (ctx->pobjDataChannel[0]) {
			    ctx->pobjDataChannel[0]->closeDataChannel();
			    delete ctx->pobjDataChannel[0];
			    ctx->pobjDataChannel[0] = 0;
			}

			if (ctx->pobjDataChannel[1]) {
			    ctx->pobjDataChannel[1]->closeDataChannel();
			    delete ctx->pobjDataChannel[1];
			    ctx->pobjDataChannel[1] = 0;
			}

			if(ctx->sharedMemBase != MAP_FAILED) {
				munmap(ctx->sharedMemBase, sizeof(overlay_shared_data));
				ctx->sharedMemBase = MAP_FAILED;
			}

			free(ctx);
		}
		return 0;
	}

/*****************************************************************************/

	static int overlay_device_open(const struct hw_module_t* module, const char* name,
								   struct hw_device_t** device)
	{
		int status = -EINVAL;

		private_overlay_module_t* m = reinterpret_cast<private_overlay_module_t*>
					(const_cast<hw_module_t*>(module));
		if (!m->pobjMutex)
			m->pobjMutex = new Mutex();

		if (!strcmp(name, OVERLAY_HARDWARE_CONTROL)) {
			struct overlay_control_context_t *dev;
			dev = (overlay_control_context_t*)malloc(sizeof(*dev));

			if (!dev)
				return status;

			/* 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 = overlay_control_close;

			dev->device.get = overlay_get;
			dev->device.createOverlay = overlay_createOverlay;
			dev->device.destroyOverlay = overlay_destroyOverlay;
			dev->device.setPosition = overlay_setPosition;
			dev->device.getPosition = overlay_getPosition;
			dev->device.setParameter = overlay_setParameter;
			dev->device.commit = overlay_commit;

			*device = &dev->device.common;
			status = 0;
		} else if (!strcmp(name, OVERLAY_HARDWARE_DATA)) {
			struct overlay_data_context_t *dev;
			dev = (overlay_data_context_t*)malloc(sizeof(*dev));

			if (!dev)
				return status;

			/* 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 = overlay_data_close;

			dev->device.initialize = overlay_initialize;
			dev->device.setCrop = overlay_setCrop;
			dev->device.dequeueBuffer = overlay_dequeueBuffer;
			dev->device.queueBuffer = overlay_queueBuffer;
			dev->device.setFd = overlay_setFd;
			dev->device.getBufferAddress = overlay_getBufferAddress;
			dev->device.getBufferCount = overlay_getBufferCount;

			*device = &dev->device.common;
			status = 0;
		}
		return status;
	}