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/*
 * libmedia-thumbnail
 *
 * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
 *
 * Contact: Hyunjun Ko <zzoon.ko@samsung.com>
 *
 * 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 "media-thumb-debug.h"
#include "media-thumb-util.h"
#include "img-codec.h"
#include <string.h>
#include <image_util.h>

unsigned int *ImgGetFirstFrameAGIFAtSize(const char *szFileName,
					 unsigned int width, unsigned int height)
{
	AGifFrameInfo *pFrameInfo = 0;
	void *pDecodedRGB888Buf = 0;
	unsigned char *raw_data = NULL;

	if (szFileName == NULL) {
		thumb_err("ImgGetFirstFrameAGIFAtSize: Input File Name is NULL");
		return NULL;
	}

	if (width == 0 || height == 0) {
		thumb_err("ImgGetFirstFrameAGIFAtSize: Input width or height is zero");
		return NULL;
	}

	pFrameInfo = ImgCreateAGIFFrame(szFileName, width, height, 0, FALSE);

	if (pFrameInfo && pFrameInfo->pOutBits) {
		ImgGetNextAGIFFrame(pFrameInfo, TRUE);

		if (ImgConvertRGB565ToRGB888(pFrameInfo->pOutBits, &pDecodedRGB888Buf, pFrameInfo->width, pFrameInfo->height)) {
			if (pDecodedRGB888Buf) {
				SAFE_FREE(pFrameInfo->pOutBits);
				pFrameInfo->pOutBits = pDecodedRGB888Buf;
				unsigned char *src = ((unsigned char *)(pFrameInfo->pOutBits));

				unsigned int i = 0;

				if (image_util_calculate_buffer_size(width, height, IMAGE_UTIL_COLORSPACE_RGB888, &i) < 0) {
					thumb_err("ImgGetFirstFrameAGIFAtSize: Failed to get buffer size");
					return NULL;
				}
				thumb_dbg("ImgGetFirstFrameAGIFAtSize: raw data size : %d)", i);

				raw_data = (unsigned char *)malloc(i);
				if (raw_data == NULL) {
					thumb_err("ImgGetFirstFrameAGIFAtSize: Failed to allocate memory");
					return NULL;
				}
				memset(raw_data, 0, i);
				unsigned char *dest = raw_data;
				while (i--) {
					if (dest != NULL) {
						*dest = *((unsigned char *)(src));
						dest++;
						src++;
					}
				}
			}
		}
	} else {
		thumb_warn("ImgDecodeAGIFToPixbufFromFile :: Error");
	}

	if (pFrameInfo) {
		ImgDestroyAGIFFrame(pFrameInfo);
	}

	return (unsigned int *)raw_data;
}

int ImgConvertRGB565ToRGB888(void *pBuf_rgb565, void **pBuf_rgb888, int width, int height)
{
	unsigned short *rgb565buf = 0;
	unsigned char *rgb888Buf = 0;
	unsigned char red, green, blue;
	int i;
	unsigned int size;

	rgb565buf = (unsigned short *)pBuf_rgb565;
	if (rgb565buf == NULL) {
		thumb_err("rgb565buf is NULL: Error !!!");
		return FALSE;
	}

	if (image_util_calculate_buffer_size(width, height, IMAGE_UTIL_COLORSPACE_RGB888, &size) < 0) {
		thumb_err("ImgGetFirstFrameAGIFAtSize: Failed to get buffer size");
		return FALSE;
	}

	rgb888Buf = (unsigned char *)malloc(size);

	if (rgb888Buf == NULL) {
		thumb_err("rgb888Buf is NULL: Error !!!");
		return FALSE;
	}

	memset(rgb888Buf, 0, size);

	for (i = 0; i < width * height; i++) {
		red = ((rgb565buf[i] >> 11) & 0x1F) << 3;
		green = ((rgb565buf[i] >> 5) & 0x3F) << 2;
		blue = (rgb565buf[i] & 0x1F) << 3;
		rgb888Buf[3 * i] = red;
		rgb888Buf[3 * i + 1] = green;
		rgb888Buf[3 * i + 2] = blue;
	}

	*pBuf_rgb888 = (void *)rgb888Buf;

	return TRUE;
}

AGifFrameInfo *ImgCreateAGIFFrame(const char *szFileName, unsigned int width, unsigned int height, unsigned int bgColor, BOOL bLoop)
{
	HFile hFile;
	FmFileAttribute fileAttrib;
	unsigned long size;
	unsigned char *pEncodedData = NULL;
	int cFileSize;
	int mem_alloc_size;

	if (szFileName == NULL) {
		thumb_err("Input File Name is NULL");
		return FALSE;
	}

	hFile = DrmOpenFile(szFileName);
	if (hFile == (HFile) INVALID_HOBJ) {
		thumb_err("ImgCreateAGIFFrame: Cannot open file");
		return NULL;
	}

	DrmGetFileAttributes(szFileName, &fileAttrib);

	if (fileAttrib.fileSize <= 0) {
		thumb_err("Zero or below Zero File Size");
		DrmCloseFile(hFile);
		return NULL;
	}

	cFileSize = fileAttrib.fileSize;
	/* A size of allocated memory - w * h *2 means RGB565 and 4096 means the max of header length */
//	mem_alloc_size = width * height * 2 + MAX_GIF_HEADER_SIZE;
	mem_alloc_size = cFileSize;
	pEncodedData = (unsigned char *)malloc(mem_alloc_size);
	if (pEncodedData == NULL) {
		thumb_err("Memory Allocation to pEncodedData failed");
		DrmCloseFile(hFile);
		return NULL;
	}
	memset(pEncodedData, 0, mem_alloc_size);
	/* coverity[ -tainted_data_argument : pEncodedData ] */
	if (DrmReadFile(hFile, pEncodedData, mem_alloc_size, &size) == FALSE) {
		thumb_err("DrmReadFile was failed");
		DrmCloseFile(hFile);
		SAFE_FREE(pEncodedData);

		return NULL;
	}

	thumb_dbg("ImgCreateAGIFFrame: file (%s) read...", szFileName);

	DrmCloseFile(hFile);

	return FastImgCreateAGIFFrameData(width, height, pEncodedData, cFileSize, bgColor, bLoop);
}

void ImgDestroyAGIFFrame(AGifFrameInfo *pFrameData)
{
	SysAssert(pFrameData);

	FastImgDestroyAGIFFrameData(pFrameData);
}

ImgFastCodecInfo ImgGetNextAGIFFrame(AGifFrameInfo *gFrameData, BOOL bCenterAlign)
{
	int iResult;

	if (gFrameData == NULL) {
		thumb_err("Input gFrameData is NULL");
		return IMG_INFO_DECODING_FAIL;
	}

	iResult = FastImgGetNextFrameAGIF(gFrameData, bCenterAlign);

	if (iResult == 1) {
		return IMG_INFO_DECODING_SUCCESS;
	} else if (iResult == 2) {
		return IMG_INFO_AGIF_LAST_FRAME;
	} else {
		return IMG_INFO_DECODING_FAIL;
	}

}