+++ /dev/null
-/*
- * 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-util-err.h>
-#include "media-thumb-debug.h"
-#include "img-codec-parser.h"
-
-static unsigned char gIfegPNGHeader[] = {0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
-static unsigned char gIfegJPEGHeader[] = { 0xFF, 0xD8 };
-static unsigned char gIfegGIFHeader[] = { "GIF" };
-static unsigned char gIfegBMPHeader[] = { 0x42, 0x4D };
-static unsigned char gIfegWBMPHeader[] = { 0x00, 0x00 };
-
-void __ImgGetFileAttributes(const char *szPathName, unsigned long *pFileAttr)
-{
- FILE *f = NULL;
-
- f = fopen(szPathName, "r");
- if (f != NULL) {
- fseek(f, 0, SEEK_END);
- *pFileAttr = ftell(f);
- fclose(f);
- }
-}
-
-static int _CheckBuffer(IFEGSTREAMCTRL *pIfegstreamctrl, unsigned int size)
-{
- unsigned long fileread;
-
- if ((size + pIfegstreamctrl->buffpos) > pIfegstreamctrl->buffend) {
- if (pIfegstreamctrl->filepos == pIfegstreamctrl->filesize)
- return MS_MEDIA_ERR_INTERNAL;
-
- if (pIfegstreamctrl->buffpos == 0) {
- fileread = fread(pIfegstreamctrl->buffer, sizeof(char), FILE_READ_SIZE, pIfegstreamctrl->fd);
- if (fileread == 0)
- return MS_MEDIA_ERR_INTERNAL;
-
- pIfegstreamctrl->buffend = fileread;
- pIfegstreamctrl->filepos += fileread;
- pIfegstreamctrl->buffpos = 0;
- } else {
-
- if (size >= 2048 || pIfegstreamctrl->buffend - pIfegstreamctrl->buffpos > FILE_READ_SIZE)
- return MS_MEDIA_ERR_INTERNAL;
-
- memcpy(pIfegstreamctrl->buffer, &pIfegstreamctrl->buffer[pIfegstreamctrl->buffpos], pIfegstreamctrl->buffend - pIfegstreamctrl->buffpos);
- fileread = fread(&pIfegstreamctrl->buffer[pIfegstreamctrl->buffend - pIfegstreamctrl->buffpos], sizeof(char), pIfegstreamctrl->buffpos, pIfegstreamctrl->fd);
- if (fileread == 0)
- return MS_MEDIA_ERR_INTERNAL;
-
- pIfegstreamctrl->buffend = pIfegstreamctrl->buffend - pIfegstreamctrl->buffpos + fileread;
- pIfegstreamctrl->buffpos = 0;
- pIfegstreamctrl->filepos += fileread;
- }
- return MS_MEDIA_ERR_NONE;
- }
- return MS_MEDIA_ERR_NONE;
-}
-
-static unsigned int _IfegReadUINT(unsigned char *pBuffer)
-{
- return (((*pBuffer) << 24) | ((*(pBuffer + 1)) << 16) | ((*(pBuffer + 2)) << 8) | (*(pBuffer + 3)));
-}
-
-static int _ImgGetImageInfo(FILE *hFile, unsigned long fileSize, char *fileExt, ImgCodecType *type, unsigned int *width, unsigned int *height)
-{
- unsigned int fileleft;
- unsigned long fileread;
- unsigned char EncodedDataBuffer[4096];
-
- unsigned int *pWidth = NULL;
- unsigned int *pHeight = NULL;
- int ret = MS_MEDIA_ERR_NONE;
-
- if (type == NULL || width == NULL || height == NULL) {
- return MS_MEDIA_ERR_INVALID_PARAMETER;
- } else {
- pWidth = width;
- pHeight = height;
-
- *type = IMG_CODEC_UNKNOWN_TYPE;
- *pWidth = 0;
- *pHeight = 0;
- }
-
- memset(EncodedDataBuffer, 0, 4096);
-
- fileread = fread(EncodedDataBuffer, sizeof(char), 8, hFile);
- if (fileread < MINIMUM_HEADER_BYTES) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE");
- return ret;
- }
-
- if (memcmp(EncodedDataBuffer, gIfegJPEGHeader, JPG_HEADER_LENGTH) == 0) {
- unsigned char header_type[JPG_HEADER_TYPE_LENGTH];
- unsigned char block_size[JPG_BLOCK_SIZE_LENGTH];
- unsigned char image_size[JPG_IMAGE_SIZE_LENGTH];
-
- rewind(hFile);
-
- unsigned short block_length = EncodedDataBuffer[4] * 256 + EncodedDataBuffer[5];
- thumb_dbg("block length : %d", block_length);
- unsigned int i = 4;
-
- if (fseek(hFile, block_length + 4, SEEK_CUR) < 0) {
- thumb_err("fseek was failed");
- return MS_MEDIA_ERR_FILE_READ_FAIL;
- }
-
- while (i < fileSize) {
- i += block_length;
- if (i >= fileSize) {
- thumb_warn("Failed to get w / h from jpeg at index [%d]", i);
- break;
- }
-
- memset(header_type, 0, JPG_HEADER_TYPE_LENGTH);
- fileread = fread(header_type, sizeof(char), JPG_HEADER_TYPE_LENGTH, hFile);
-
- if (header_type[0] != 0xFF) {
- thumb_warn("Failed to get w / h from jpeg at index [%d]", i);
- break;
- }
-
- if (header_type[1] == 0xC0 || header_type[1] == 0xC2) {
- memset(image_size, 0, JPG_IMAGE_SIZE_LENGTH);
- fileread = fread(image_size, sizeof(char), JPG_IMAGE_SIZE_LENGTH, hFile);
-
- *pWidth = image_size[5] * 256 + image_size[6];
- *pHeight = image_size[3] * 256 + image_size[4];
- break;
- } else {
- i += 2;
- memset(block_size, 0, JPG_BLOCK_SIZE_LENGTH);
- fileread = fread(block_size, sizeof(char), JPG_BLOCK_SIZE_LENGTH, hFile);
- block_length = block_size[0] * 256 + block_size[1];
- thumb_dbg("new block length : %d", block_length);
-
- if (fseek(hFile, block_length-JPG_BLOCK_SIZE_LENGTH, SEEK_CUR) < 0) {
- thumb_err("fseek was failed");
- return MS_MEDIA_ERR_FILE_READ_FAIL;
- }
- }
- }
- thumb_dbg("IMG_CODEC_JPEG : W[%d] H[%d]", *pWidth, *pHeight);
- *type = IMG_CODEC_JPEG;
- }
- /*********************** PNG *************************/
- else if (memcmp(EncodedDataBuffer, gIfegPNGHeader, PNG_HEADER_LENGTH) == 0) {
- unsigned char tmp;
-
- fileread = fread(EncodedDataBuffer, sizeof(char), 32, hFile);
- if (fileread < 32) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in PNG");
- return ret;
- }
- /* Get Image Width */
- if (pWidth)
- *pWidth = _IfegReadUINT((EncodedDataBuffer + 8));
-
- /* Get Image Height */
- if (pHeight)
- *pHeight = _IfegReadUINT((EncodedDataBuffer + 12));
-
- /* Read Interlace byte */
- tmp = *(EncodedDataBuffer + 20);
- /* If image is interlaced then multiple should be 2 */
- if (tmp) {
- thumb_dbg("Interlaced PNG Image.");
- }
- thumb_dbg("IMG_CODEC_PNG");
- *type = IMG_CODEC_PNG;
- }
- /*********************** BMP *************************/
- else if (memcmp(EncodedDataBuffer, gIfegBMPHeader, BMP_HEADER_LENGTH) == 0) {
- /* Parse BMP File and get image width and image height */
- fileread = fread(&EncodedDataBuffer[8], sizeof(char), 18, hFile);
- if (fileread < 18) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in BMP");
- return ret;
- }
- if (pWidth) {
- *pWidth =
- EncodedDataBuffer[18] | (EncodedDataBuffer[19] << 8)
- | (EncodedDataBuffer[20] << 16) |
- (EncodedDataBuffer[21] << 24);
- }
- if (pHeight) {
- // add the reference function abs(). may have negative height values in bmp header.
- *pHeight = abs(EncodedDataBuffer[22] | (EncodedDataBuffer[23] << 8) | (EncodedDataBuffer[24] << 16) | (EncodedDataBuffer[25] << 24));
- }
-
- thumb_dbg("IMG_CODEC_BMP");
- *type = IMG_CODEC_BMP;
- }
- /*********************** GIF *************************/
- else if (memcmp(EncodedDataBuffer, gIfegGIFHeader, GIF_HEADER_LENGTH) == 0) {
- unsigned int tablelength = 0;
- unsigned int imagecount = 0;
- int finished = 0;
- unsigned char temp;
- unsigned int length;
- IFEGSTREAMCTRL ifegstreamctrl;
-
- if (13 > fileSize) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in GIF");
- return ret;
- }
-
- fileread = fread(&EncodedDataBuffer[8], sizeof(char), 5, hFile);
- if (fileread < 5) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in GIF");
- return ret;
- }
-
- if (EncodedDataBuffer[0] != 'G' || EncodedDataBuffer[1] != 'I'
- || EncodedDataBuffer[2] != 'F' || EncodedDataBuffer[3] < '0'
- || EncodedDataBuffer[3] > '9' || EncodedDataBuffer[4] < '0'
- || EncodedDataBuffer[4] > '9' || EncodedDataBuffer[5] < 'A'
- || EncodedDataBuffer[5] > 'z') {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in GIF");
- return ret;
- }
-
- *pWidth = EncodedDataBuffer[6] | (EncodedDataBuffer[7] << 8);
- *pHeight = EncodedDataBuffer[8] | (EncodedDataBuffer[9] << 8);
-
- thumb_dbg("Logical width : %d, Height : %d", *pWidth, *pHeight);
-
- if ((EncodedDataBuffer[10] & 0x80) != 0) { /* Global color table */
- temp = (EncodedDataBuffer[10] & 0x7) + 1;
- tablelength = (1 << temp) * 3;
-
- if ((tablelength * sizeof(char)) > sizeof(EncodedDataBuffer)) {
- thumb_warn("_ImgGetInfoStreaming :table length is more than buffer length");
- return ret;
- }
-
- if (13 + tablelength > fileSize) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in GIF");
- return ret;
- }
- /* coverity[ -tainted_data_argument : EncodedDataBuffer ] */
- fileread = fread(EncodedDataBuffer, sizeof(char), tablelength, hFile);
- if (fileread < tablelength) {
- thumb_warn("IMG_CODEC_UNKNOWN_TYPE in GIF");
- return ret;
- }
- }
-
- fileleft = fileSize - 13 - tablelength;
-
- ifegstreamctrl.fd = hFile;
- ifegstreamctrl.filesize = fileleft;
- ifegstreamctrl.filepos = 0;
- ifegstreamctrl.buffpos = 0;
- ifegstreamctrl.buffend = 0;
- ifegstreamctrl.buffer = EncodedDataBuffer;
-
- while (!finished) {
- if (ifegstreamctrl.buffpos > ifegstreamctrl.buffend)
- break;
- if (_CheckBuffer(&ifegstreamctrl, 1) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- switch (EncodedDataBuffer[ifegstreamctrl.buffpos++]) {
-
- case 0x3b: /* End of the GIF dataset */
- finished = 1;
- break;
-
- case 0x21: /* Extension Block */
- if (_CheckBuffer(&ifegstreamctrl, 1) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- switch (EncodedDataBuffer[ifegstreamctrl.buffpos++]) {
-
- case 0xf9: /* Graphic control extension block */
- if (_CheckBuffer(&ifegstreamctrl, 6) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- if (4 != EncodedDataBuffer[ifegstreamctrl.buffpos++]) { /* data length : fixed 4 bytes */
- *type = 0;
- }
- ifegstreamctrl.buffpos += 4;
- ifegstreamctrl.buffpos++; /* block end */
- break;
-
- case 0x01: /* Plain Text block */
- case 0xfe: /* Comment Extension block */
- case 0xff: /* Appliation Extension block */
- if (_CheckBuffer(&ifegstreamctrl, 1) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- if (ifegstreamctrl.buffpos > sizeof(EncodedDataBuffer)) {
- thumb_warn("buffer position exceeds buffer max length ");
- return ret;
- }
-
- while ((ifegstreamctrl.buffpos < sizeof(EncodedDataBuffer))
- && ((length = EncodedDataBuffer[ifegstreamctrl.buffpos++]) > 0)) { /* get the data length */
- if (_CheckBuffer(&ifegstreamctrl, length) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- /* Check integer overflow */
- if (ifegstreamctrl.buffpos > 0xffffffff - length) {
- thumb_err("Prevent integer overflow..");
- return ret;
- }
-
- ifegstreamctrl.buffpos += (length);
- /* File End Check */
- }
- break;
-
- default:
- break;
- }
-
- break;
-
- case 0x2c: /* Start of an image object. Read the image description. */
-
- if (_CheckBuffer(&ifegstreamctrl, 9) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-#if 1
- if (imagecount == 0) {
- /* Regard the width/height of the first image block as the size of thumbnails. */
- int img_block_w = 0, img_block_h = 0;
-
- img_block_w = EncodedDataBuffer[ifegstreamctrl.buffpos + 4] |(EncodedDataBuffer[ifegstreamctrl.buffpos + 5] << 8);
- img_block_h = EncodedDataBuffer[ifegstreamctrl.buffpos + 6] |(EncodedDataBuffer[ifegstreamctrl.buffpos + 7] << 8);
- thumb_dbg("Image block width : %d, Height : %d", img_block_w, img_block_h);
-
- *pWidth = img_block_w;
- *pHeight = img_block_h;
- }
-#endif
- /* Color Resolution */
- if ((EncodedDataBuffer[ifegstreamctrl.buffpos + 8] & 0x80) != 0) { /* Logical color table */
- temp = (EncodedDataBuffer[ifegstreamctrl.buffpos + 8] & 0x7) + 1;
- length = (1 << temp) * 3;
- if (_CheckBuffer(&ifegstreamctrl, length + 9) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- ifegstreamctrl.buffpos += length;
- /* File End Check */
- }
-
- ifegstreamctrl.buffpos += 9;
-
- if (_CheckBuffer(&ifegstreamctrl, 1) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- temp = EncodedDataBuffer[ifegstreamctrl.buffpos++];
- if (temp < 2 || 9 < temp) {
- return ret;
- }
-
- do {
- if (_CheckBuffer(&ifegstreamctrl, 1) != MS_MEDIA_ERR_NONE) {
- thumb_warn("_CheckBuffer was failed");
- return ret;
- }
-
- length = EncodedDataBuffer[ifegstreamctrl.buffpos++];
- if ((length + ifegstreamctrl.buffpos) > ifegstreamctrl.buffend) {
- length = length + ifegstreamctrl.buffpos - ifegstreamctrl.buffend;
- if (fseek(ifegstreamctrl.fd, length, SEEK_CUR) < 0) {
- if (imagecount) {
- thumb_dbg("IMG_CODEC_AGIF");
- *type = IMG_CODEC_AGIF;
- return ret;
- }
- return MS_MEDIA_ERR_FILE_READ_FAIL;
- }
- ifegstreamctrl.filepos += length;
- ifegstreamctrl.buffpos = 0;
- ifegstreamctrl.buffend = 0;
- } else {
- ifegstreamctrl.buffpos += length;
- }
-
- /* File End Check */
- } while (length);
- if (!imagecount)
- imagecount++;
- else {
- thumb_dbg("IMG_CODEC_AGIF");
- *type = IMG_CODEC_AGIF;
- return ret;
- }
- break;
-
- default:
- finished = 0;
- break;
-
- }
- }
- thumb_dbg("IMG_CODEC_GIF");
- *type = IMG_CODEC_GIF;
- }
- /*********************** WBMP *************************/
- else if ((memcmp(EncodedDataBuffer, gIfegWBMPHeader, WBMP_HEADER_LENGTH) == 0) && (strcasecmp(fileExt, "wbmp") == 0)) {
- /* Parse BMP File and get image width and image height */
- if (pWidth)
- *pWidth = EncodedDataBuffer[2];
-
- if (pHeight)
- *pHeight = EncodedDataBuffer[3];
-
- thumb_dbg("IMG_CODEC_WBMP W[%d] H[%d]", *pWidth, *pHeight);
- *type = IMG_CODEC_WBMP;
- }
- return ret;
-}
-
-static int _ImgGetFileExt(const char *file_path, char *file_ext, int max_len)
-{
- int i = 0;
-
- for (i = (int)strlen(file_path); i >= 0; i--) {
- if ((file_path[i] == '.') && (i < (int)strlen(file_path))) {
- strncpy(file_ext, &file_path[i + 1], max_len);
- return MS_MEDIA_ERR_NONE;
- }
-
- /* meet the dir. no ext */
- if (file_path[i] == '/')
- return MS_MEDIA_ERR_INVALID_PARAMETER;
- }
-
- return MS_MEDIA_ERR_INVALID_PARAMETER;
-}
-
-int ImgGetImageInfo(const char *filePath, ImgCodecType *type, unsigned int *width, unsigned int *height)
-{
- FILE *hFile;
- unsigned long file_size = 0;
- char file_ext[10] = { 0, };
- int ret = 0;
-
- if (filePath == NULL)
- return MS_MEDIA_ERR_INVALID_PARAMETER;
-
- hFile = fopen(filePath, "rb");
- if (hFile == NULL) {
- thumb_err("file open error: %s", filePath);
- return MS_MEDIA_ERR_INVALID_PARAMETER;
- }
-
- __ImgGetFileAttributes(filePath, &file_size);
- if (file_size == 0) {
- fclose(hFile);
- return MS_MEDIA_ERR_INVALID_PARAMETER;
- }
-
- ret = _ImgGetFileExt(filePath, file_ext, sizeof(file_ext));
- if (ret != MS_MEDIA_ERR_NONE) {
- thumb_warn("_media_thumb_get_file_ext failed");
- }
-
- ret = _ImgGetImageInfo(hFile, file_size, file_ext, type, width, height);
-
- fseek(hFile, 0, SEEK_SET);
- fclose(hFile);
-
- return ret;
-}
projects / platform / core / multimedia / libmedia-thumbnail.git / commitdiff