| /* |
| * Copyright Samsung Electronics Co.,LTD. |
| * Copyright (C) 2010 The Android Open Source Project |
| * Copyright (C) 2011-2019 Intel Corporation |
| * |
| * 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. |
| * |
| * JPEG DRIVER MODULE (ExifCreater.cpp) |
| * Author : ge.lee -- initial version |
| * Date : 03 June 2010 |
| * Purpose : This file implements the JPEG encoder APIs as needed by Camera HAL |
| */ |
| |
| #define LOG_TAG "ExifCreater" |
| |
| #include <sys/mman.h> |
| #include <fcntl.h> |
| #include "LogHelper.h" |
| #include "PlatformData.h" |
| #include "ExifCreater.h" |
| |
| namespace cros { |
| namespace intel { |
| static const int APP2_HEADER_SIZE = 4; |
| static const char ExifAsciiPrefix[] = { 0x41, 0x53, 0x43, 0x49, 0x49, 0x0, 0x0, 0x0 }; |
| static const unsigned char JPEG_MARKER_SOI[2] = {0xFF, 0xD8}; // JPEG StartOfImage marker |
| |
| ExifCreater::ExifCreater() |
| { |
| m_thumbBuf = nullptr; |
| m_thumbSize = 0; |
| } |
| |
| ExifCreater::~ExifCreater() |
| { |
| } |
| |
| exif_status ExifCreater::setThumbData(const void *thumbBuf, unsigned int thumbSize) |
| { |
| if (thumbSize >= THUMBNAIL_SIZE_LIMITATION) { |
| LOGE("ERROR: Too big thumb size %d (limit: %d)", thumbSize, THUMBNAIL_SIZE_LIMITATION); |
| m_thumbBuf = nullptr; |
| m_thumbSize = 0; |
| return EXIF_FAIL; |
| } |
| |
| m_thumbBuf = (unsigned char *)thumbBuf; |
| m_thumbSize = thumbSize; |
| return EXIF_SUCCESS; |
| } |
| |
| bool ExifCreater::isThumbDataSet() const |
| { |
| return m_thumbBuf != nullptr; |
| } |
| |
| /** |
| * Makes the exif in-place into the same buffer with the jpeg data. |
| * If padding is preferred, writes enough APP2 padding to reach dqtOffset of |
| * jpeg data. If padding is not preferred, copies the jpeg data starting from |
| * dqtOffset so that the JPEG is complete. Writes the actual added exif size to |
| * the argument "sizeWritten" at the end. |
| * |
| * The user of this API must ensure that the dqtAddr is far enough in the buffer |
| * so that the generated exif will fit to the start of the buffer. Otherwise the |
| * jpeg image will be corrupted. |
| * |
| * If "usePadding" is set to false, it is possible to use separate buffers for |
| * "bufferStartAddr" and "dqtAddr". If "usePadding" is true, dqtAddr must be |
| * inside the same buffer. |
| * |
| * \param bufferStartAddr [IN] the start address of the buffer for both exif and jpeg data |
| * \param dqtAddr [IN] the address of the DQT marker of JPEG data |
| * \param exifInfo [IN] the exif information |
| * \param jpegSize [IN] the size of the JPEG data (between DQT and EOI, including the markers) |
| * \param bufferSize [IN] size of the output buffer (bufferStartAddr) |
| * \param usePadding [IN] whether to use APP2 padding between end of exif and start of DQT. If false, jpeg data is memmoved. |
| * \param sizeWritten [OUT] the size of the written exif data, including SOI marker and padding if needed |
| * \return EXIF_FAIL or EXIF_SUCCESS |
| */ |
| exif_status ExifCreater::makeExifInPlace(unsigned char *bufferStartAddr, |
| unsigned char *dqtAddr, |
| exif_attribute_t *exifInfo, |
| size_t jpegSize, |
| bool usePadding, |
| size_t &sizeWritten) |
| { |
| LOG1("@%s start", __FUNCTION__); |
| |
| if (bufferStartAddr == nullptr || dqtAddr == nullptr) { |
| LOGE("nullptr pointers given for exif"); |
| return EXIF_FAIL; |
| } |
| |
| // Copy the SOI marker |
| size_t exifSize = sizeof(JPEG_MARKER_SOI); |
| STDCOPY(bufferStartAddr, JPEG_MARKER_SOI, sizeof(JPEG_MARKER_SOI)); |
| |
| size_t sizeAdded = 0; |
| exif_status status = makeExif(bufferStartAddr + sizeof(JPEG_MARKER_SOI), exifInfo, &sizeAdded); |
| if (status != EXIF_SUCCESS) |
| return status; |
| |
| exifSize += sizeAdded; |
| |
| int32_t paddingSize = 0; |
| int32_t paddingMkntSize = 0; |
| if (usePadding) { |
| // figure out how much we need to add padding |
| int32_t spaceForExif = dqtAddr - bufferStartAddr; |
| paddingSize = spaceForExif - exifSize; |
| if (paddingSize < 0) { |
| LOGE("Too big exif - jpeg data overwritten and corrupted."); |
| return EXIF_FAIL; |
| } |
| paddingMkntSize = paddingSize - APP2_HEADER_SIZE; |
| } |
| |
| if (usePadding == false || paddingMkntSize < 0) { |
| unsigned char *dest = bufferStartAddr + exifSize; |
| // padding not wanted or headers are bigger than needed padding - just copy the data |
| if (dqtAddr + jpegSize < dest || dqtAddr > dest + jpegSize) |
| STDCOPY(dest, dqtAddr, jpegSize); |
| else |
| memmove(dest, dqtAddr, jpegSize); |
| sizeWritten = exifSize; |
| return EXIF_SUCCESS; |
| } |
| |
| exif_attribute_t paddingInfo; |
| paddingInfo.makerNoteDataSize = paddingMkntSize; |
| paddingInfo.makerNoteData = new unsigned char[paddingMkntSize]; |
| |
| size_t app2Written = 0; |
| status = makeApp2(bufferStartAddr + exifSize, app2Written, &paddingInfo, false); |
| if (app2Written != (uint32_t) paddingSize) |
| LOGW("exif padded only %zu, wanted %d", app2Written, paddingSize); |
| |
| delete [] paddingInfo.makerNoteData; |
| paddingInfo.makerNoteData = nullptr; |
| sizeWritten = exifSize + paddingSize; |
| return status; |
| } |
| |
| // if exif tags size + thumbnail size is > 64K, it will disable thumbnail |
| exif_status ExifCreater::makeExif (void *exifOut, |
| exif_attribute_t *exifInfo, |
| size_t *size) |
| { |
| LOG1("makeExif start"); |
| |
| unsigned char *pCur, *pApp1Start, *pIfdStart, *pGpsIfdPtr, *pNextIfdOffset; |
| unsigned int tmp, LongerTagOffset = 0, LongerTagOffsetWithoutThumbnail; |
| pApp1Start = pCur = (unsigned char *)exifOut; |
| |
| // If we write the Makernote to APP2 segment, |
| // we need to skip some IFDs in the APP1 segment |
| bool makernoteToApp2 = PlatformData::supportExtendedMakernote(); |
| |
| // 2 Exif Identifier Code & TIFF Header |
| unsigned char ExifIdentifierCode[6] = { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 }; |
| STDCOPY(pCur, ExifIdentifierCode, 6); |
| pCur += 6; |
| |
| /* Byte Order - little endian, Offset of IFD - 0x00000008.H */ |
| unsigned char TiffHeader[8] = { 0x49, 0x49, 0x2A, 0x00, 0x08, 0x00, 0x00, 0x00 }; |
| STDCOPY(pCur, TiffHeader, 8); |
| pIfdStart = pCur; |
| pCur += 8; |
| |
| // 2 0th IFD TIFF Tags |
| if (exifInfo->enableGps) |
| tmp = NUM_0TH_IFD_TIFF; |
| else |
| tmp = NUM_0TH_IFD_TIFF - 1; |
| |
| STDCOPY(pCur, (int8_t *) &tmp, NUM_SIZE); |
| pCur += NUM_SIZE; |
| |
| LongerTagOffset += 8 + NUM_SIZE + tmp*IFD_SIZE + OFFSET_SIZE; |
| |
| writeExifIfd(&pCur, EXIF_TAG_IMAGE_WIDTH, EXIF_TYPE_LONG, |
| 1, exifInfo->width); |
| writeExifIfd(&pCur, EXIF_TAG_IMAGE_HEIGHT, EXIF_TYPE_LONG, |
| 1, exifInfo->height); |
| writeExifIfd(&pCur, EXIF_TAG_IMAGE_DESCRIPTION, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->image_description) + 1, exifInfo->image_description, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_MAKE, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->maker) + 1, exifInfo->maker, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_MODEL, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->model) + 1, exifInfo->model, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_ORIENTATION, EXIF_TYPE_SHORT, |
| 1, exifInfo->orientation); |
| writeExifIfd(&pCur, EXIF_TAG_X_RESOLUTION, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->x_resolution, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_Y_RESOLUTION, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->y_resolution, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_RESOLUTION_UNIT, EXIF_TYPE_SHORT, |
| 1, exifInfo->resolution_unit); |
| writeExifIfd(&pCur, EXIF_TAG_SOFTWARE, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->software) + 1, exifInfo->software, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_DATE_TIME, EXIF_TYPE_ASCII, |
| 20, exifInfo->date_time, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_YCBCR_POSITIONING, EXIF_TYPE_SHORT, |
| 1, exifInfo->ycbcr_positioning); |
| writeExifIfd(&pCur, EXIF_TAG_EXIF_IFD_POINTER, EXIF_TYPE_LONG, |
| 1, LongerTagOffset); |
| |
| pGpsIfdPtr = pCur; |
| if (exifInfo->enableGps) { |
| pCur += IFD_SIZE; // Skip a ifd size for gps IFD pointer |
| } |
| |
| pNextIfdOffset = pCur; // Skip a offset size for next IFD offset |
| pCur += OFFSET_SIZE; |
| |
| // 2 0th IFD Exif Private Tags |
| pCur = pIfdStart + LongerTagOffset; |
| |
| int drop_num = 0; |
| if (exifInfo->exposure_time.den == 0) |
| drop_num++; |
| if (exifInfo->shutter_speed.den == 0) |
| drop_num++; |
| if (exifInfo->makerNoteDataSize == 0 || makernoteToApp2) { |
| // skip the makernote IFD in APP1, when we don't have any, |
| // or if we want it to APP2 |
| drop_num++; |
| } |
| tmp = NUM_0TH_IFD_EXIF - drop_num; |
| STDCOPY(pCur, (int8_t *) &tmp, NUM_SIZE); |
| pCur += NUM_SIZE; |
| |
| LongerTagOffset += NUM_SIZE + tmp * IFD_SIZE + OFFSET_SIZE; |
| if (exifInfo->exposure_time.den != 0) { |
| writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_TIME, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->exposure_time, &LongerTagOffset, pIfdStart); |
| } |
| writeExifIfd(&pCur, EXIF_TAG_FNUMBER, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->fnumber, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_PROGRAM, EXIF_TYPE_SHORT, |
| 1, exifInfo->exposure_program); |
| writeExifIfd(&pCur, EXIF_TAG_ISO_SPEED_RATING, EXIF_TYPE_SHORT, |
| 1, exifInfo->iso_speed_rating); |
| writeExifIfd(&pCur, EXIF_TAG_EXIF_VERSION, EXIF_TYPE_UNDEFINED, |
| 4, exifInfo->exif_version); |
| writeExifIfd(&pCur, EXIF_TAG_DATE_TIME_ORG, EXIF_TYPE_ASCII, |
| 20, exifInfo->date_time, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_DATE_TIME_DIGITIZE, EXIF_TYPE_ASCII, |
| 20, exifInfo->date_time, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_COMPONENTS_CONFIGURATION, EXIF_TYPE_UNDEFINED, |
| 4, exifInfo->components_configuration); |
| if (exifInfo->shutter_speed.den != 0) { |
| writeExifIfd(&pCur, EXIF_TAG_SHUTTER_SPEED, EXIF_TYPE_SRATIONAL, |
| 1, (rational_t *)&exifInfo->shutter_speed, &LongerTagOffset, pIfdStart); |
| } |
| writeExifIfd(&pCur, EXIF_TAG_APERTURE, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->aperture, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_BRIGHTNESS, EXIF_TYPE_SRATIONAL, |
| 1, (rational_t *)&exifInfo->brightness, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_BIAS, EXIF_TYPE_SRATIONAL, |
| 1, (rational_t *)&exifInfo->exposure_bias, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_MAX_APERTURE, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->max_aperture, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_SUBJECT_DISTANCE, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->subject_distance, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_METERING_MODE, EXIF_TYPE_SHORT, |
| 1, exifInfo->metering_mode); |
| writeExifIfd(&pCur, EXIF_TAG_LIGHT_SOURCE, EXIF_TYPE_SHORT, |
| 1, exifInfo->light_source); |
| writeExifIfd(&pCur, EXIF_TAG_FLASH, EXIF_TYPE_SHORT, |
| 1, exifInfo->flash); |
| writeExifIfd(&pCur, EXIF_TAG_FOCAL_LENGTH, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->focal_length, &LongerTagOffset, pIfdStart); |
| char code[8] = { 0x41, 0x53, 0x43, 0x49, 0x49, 0x00, 0x00, 0x00 }; |
| size_t commentsLen = STRLEN_S((char *)exifInfo->user_comment) + 1; |
| if(commentsLen > (sizeof(exifInfo->user_comment) - sizeof(code))) |
| return EXIF_FAIL; |
| memmove(exifInfo->user_comment + sizeof(code), exifInfo->user_comment, commentsLen); |
| STDCOPY(exifInfo->user_comment, code, sizeof(code)); |
| writeExifIfd(&pCur, EXIF_TAG_USER_COMMENT, EXIF_TYPE_UNDEFINED, |
| commentsLen + sizeof(code), exifInfo->user_comment, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_SUBSEC_TIME, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->subsec_time)+1, exifInfo->subsec_time, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_SUBSEC_TIME_ORIG, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->subsec_time)+1, exifInfo->subsec_time, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_SUBSEC_TIME_DIG, EXIF_TYPE_ASCII, |
| STRLEN_S((char *)exifInfo->subsec_time)+1, exifInfo->subsec_time, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_FLASH_PIX_VERSION, EXIF_TYPE_UNDEFINED, |
| 4, exifInfo->flashpix_version); |
| writeExifIfd(&pCur, EXIF_TAG_COLOR_SPACE, EXIF_TYPE_SHORT, |
| 1, exifInfo->color_space); |
| writeExifIfd(&pCur, EXIF_TAG_PIXEL_X_DIMENSION, EXIF_TYPE_LONG, |
| 1, exifInfo->width); |
| writeExifIfd(&pCur, EXIF_TAG_PIXEL_Y_DIMENSION, EXIF_TYPE_LONG, |
| 1, exifInfo->height); |
| writeExifIfd(&pCur, EXIF_TAG_CUSTOM_RENDERED, EXIF_TYPE_SHORT, |
| 1, exifInfo->custom_rendered); |
| writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_MODE, EXIF_TYPE_SHORT, |
| 1, exifInfo->exposure_mode); |
| writeExifIfd(&pCur, EXIF_TAG_WHITE_BALANCE, EXIF_TYPE_SHORT, |
| 1, exifInfo->white_balance); |
| writeExifIfd(&pCur, EXIF_TAG_JPEG_ZOOM_RATIO, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->zoom_ratio, &LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_SCENCE_CAPTURE_TYPE, EXIF_TYPE_SHORT, |
| 1, exifInfo->scene_capture_type); |
| writeExifIfd(&pCur, EXIF_TAG_GAIN_CONTROL, EXIF_TYPE_SHORT, |
| 1, exifInfo->gain_control); |
| writeExifIfd(&pCur, EXIF_TAG_CONTRAST, EXIF_TYPE_SHORT, |
| 1, exifInfo->contrast); |
| writeExifIfd(&pCur, EXIF_TAG_SATURATION, EXIF_TYPE_SHORT, |
| 1, exifInfo->saturation); |
| writeExifIfd(&pCur, EXIF_TAG_SHARPNESS, EXIF_TYPE_SHORT, |
| 1, exifInfo->sharpness); |
| |
| // Save MakerNote data to APP1, unless we want it APP2 |
| if (exifInfo->makerNoteDataSize > 0 && !makernoteToApp2) { |
| writeExifIfd( |
| &pCur, |
| EXIF_TAG_MAKER_NOTE, |
| EXIF_TYPE_UNDEFINED, |
| exifInfo->makerNoteDataSize, |
| (unsigned char *)exifInfo->makerNoteData, |
| &LongerTagOffset, |
| pIfdStart |
| ); |
| } |
| |
| tmp = 0; |
| STDCOPY(pCur, (int8_t *) &tmp, OFFSET_SIZE); // next IFD offset |
| pCur += OFFSET_SIZE; |
| |
| // 2 0th IFD GPS Info Tags |
| if (exifInfo->enableGps) { |
| writeExifIfd(&pGpsIfdPtr, EXIF_TAG_GPS_IFD_POINTER, EXIF_TYPE_LONG, |
| 1, LongerTagOffset); // GPS IFD pointer skipped on 0th IFD |
| |
| pCur = pIfdStart + LongerTagOffset; |
| |
| tmp = NUM_0TH_IFD_GPS; |
| if ((exifInfo->enableGps & EXIF_GPS_LATITUDE) == 0) |
| tmp -= 2; |
| if ((exifInfo->enableGps & EXIF_GPS_LONGITUDE) == 0) |
| tmp -= 2; |
| if ((exifInfo->enableGps & EXIF_GPS_ALTITUDE) == 0) |
| tmp -= 2; |
| if ((exifInfo->enableGps & EXIF_GPS_TIMESTAMP) == 0) |
| tmp -= 1; |
| if ((exifInfo->enableGps & EXIF_GPS_PROCMETHOD) == 0) |
| tmp -= 1; |
| if ((exifInfo->enableGps & EXIF_GPS_IMG_DIRECTION) == 0) |
| tmp -= 2; |
| |
| STDCOPY(pCur, (int8_t *) &tmp, NUM_SIZE); |
| pCur += NUM_SIZE; |
| |
| LongerTagOffset += NUM_SIZE + tmp*IFD_SIZE + OFFSET_SIZE; |
| |
| writeExifIfd(&pCur, EXIF_TAG_GPS_VERSION_ID, EXIF_TYPE_BYTE, |
| 4, exifInfo->gps_version_id); |
| if (exifInfo->enableGps & EXIF_GPS_LATITUDE) { |
| writeExifIfd(&pCur, EXIF_TAG_GPS_LATITUDE_REF, EXIF_TYPE_ASCII, |
| 2, exifInfo->gps_latitude_ref); |
| writeExifIfd(&pCur, EXIF_TAG_GPS_LATITUDE, EXIF_TYPE_RATIONAL, |
| 3, exifInfo->gps_latitude, &LongerTagOffset, pIfdStart); |
| } |
| |
| if (exifInfo->enableGps & EXIF_GPS_LONGITUDE) { |
| writeExifIfd(&pCur, EXIF_TAG_GPS_LONGITUDE_REF, EXIF_TYPE_ASCII, |
| 2, exifInfo->gps_longitude_ref); |
| writeExifIfd(&pCur, EXIF_TAG_GPS_LONGITUDE, EXIF_TYPE_RATIONAL, |
| 3, exifInfo->gps_longitude, &LongerTagOffset, pIfdStart); |
| } |
| |
| if (exifInfo->enableGps & EXIF_GPS_ALTITUDE) { |
| writeExifIfd(&pCur, EXIF_TAG_GPS_ALTITUDE_REF, EXIF_TYPE_BYTE, |
| 1, exifInfo->gps_altitude_ref); |
| writeExifIfd(&pCur, EXIF_TAG_GPS_ALTITUDE, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->gps_altitude, &LongerTagOffset, pIfdStart); |
| } |
| |
| if (exifInfo->enableGps & EXIF_GPS_TIMESTAMP) { |
| writeExifIfd(&pCur, EXIF_TAG_GPS_TIMESTAMP, EXIF_TYPE_RATIONAL, |
| 3, exifInfo->gps_timestamp, &LongerTagOffset, pIfdStart); |
| } |
| |
| if (exifInfo->enableGps & EXIF_GPS_IMG_DIRECTION) { |
| writeExifIfd(&pCur, EXIF_TAG_GPS_IMG_DIRECTION_REF, EXIF_TYPE_ASCII, |
| 2, exifInfo->gps_img_direction_ref); |
| writeExifIfd(&pCur, EXIF_TAG_GPS_IMG_DIRECTION, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->gps_img_direction, &LongerTagOffset, pIfdStart); |
| } |
| |
| if (exifInfo->enableGps & EXIF_GPS_PROCMETHOD) { |
| tmp = STRLEN_S((char*)exifInfo->gps_processing_method); |
| if (tmp > 0) { |
| if (tmp > 100) { |
| tmp = 100; |
| } |
| unsigned char tmp_buf[100+sizeof(ExifAsciiPrefix)]; |
| MEMCPY_S(tmp_buf, sizeof(tmp_buf), ExifAsciiPrefix, sizeof(ExifAsciiPrefix)); |
| MEMCPY_S(&tmp_buf[sizeof(ExifAsciiPrefix)], 100, exifInfo->gps_processing_method, tmp); |
| writeExifIfd(&pCur, EXIF_TAG_GPS_PROCESSING_METHOD, EXIF_TYPE_UNDEFINED, |
| tmp+sizeof(ExifAsciiPrefix), tmp_buf, &LongerTagOffset, pIfdStart); |
| } |
| } |
| writeExifIfd(&pCur, EXIF_TAG_GPS_DATESTAMP, EXIF_TYPE_ASCII, |
| 11, exifInfo->gps_datestamp, &LongerTagOffset, pIfdStart); |
| tmp = 0; |
| STDCOPY(pCur, (int8_t *) &tmp, OFFSET_SIZE); // next IFD offset |
| pCur += OFFSET_SIZE; |
| } |
| |
| // backup LongerTagOffset, if the total exif size is > 64K, we will use it. |
| LongerTagOffsetWithoutThumbnail = LongerTagOffset; |
| if (LongerTagOffsetWithoutThumbnail >= EXIF_SIZE_LIMITATION) { |
| LOGE("line:%d, in the makeExif, the size exceeds 64K", __LINE__); |
| return EXIF_FAIL; |
| } |
| |
| // 2 1th IFD TIFF Tags |
| if (exifInfo->enableThumb && (m_thumbBuf != nullptr) && (m_thumbSize > 0)) { |
| writeThumbData(pIfdStart, pNextIfdOffset, &LongerTagOffset, exifInfo); |
| } else { |
| tmp = 0; |
| STDCOPY(pNextIfdOffset, (int8_t *) &tmp, OFFSET_SIZE); // NEXT IFD offset skipped on 0th IFD |
| } |
| // calc and fill the APP1 segment total size, 2 is length; 6 is ExifIdentifierCode |
| *size = 2 + 6 + LongerTagOffset; |
| |
| unsigned app2StartOffset = *size; |
| *size += 2; // APP1 marker size |
| |
| exif_status status = EXIF_SUCCESS; |
| |
| if (makernoteToApp2) { |
| LOG1("Makernote goes to APP2 segment."); |
| status = makeApp2((pApp1Start + app2StartOffset), *size, exifInfo); |
| } |
| |
| LOG1("makeExif End"); |
| |
| return EXIF_SUCCESS; |
| } |
| |
| void ExifCreater::writeMarkerSizeToBuf(unsigned char *ptrTo, unsigned int size) |
| { |
| unsigned char size_mm[2] = { |
| static_cast<unsigned char>((size >> 8) & 0xFF), |
| static_cast<unsigned char>(size & 0xFF) }; |
| |
| STDCOPY(ptrTo, size_mm, 2); |
| } |
| |
| /** |
| * makeApp2 |
| * |
| * Write the makernote to APP2 segment. Use multiple APP2 segments if makernote |
| * size is more than one segment (64 kb) |
| * |
| * \param pStartApp2 [IN] APP2 start address |
| * \param exifInfo [IN] Data to be written |
| * \param writeId [IN] Whether to write the Intel Makernote ID string. |
| * \param size [OUT] Total size after APP2 is written |
| */ |
| exif_status ExifCreater::makeApp2(void* pStartApp2, size_t& size, exif_attribute_t *exifInfo, bool writeId) |
| { |
| LOG1("@%s", __FUNCTION__); |
| |
| // APP2 marker will be written starting from the pos pointed to by |
| // pStartApp2 |
| |
| if (exifInfo->makerNoteDataSize <= 0) |
| return EXIF_SUCCESS; |
| |
| int bytesLeftForSegment = EXIF_SIZE_LIMITATION; |
| int bytesToWrite = exifInfo->makerNoteDataSize; |
| |
| unsigned char *pCur = nullptr, *pApp2Start = nullptr; |
| unsigned char App2Marker[SIZEOF_APP2_MARKER] = { 0xff, 0xe2 }; |
| int writeCount = 0; |
| int app2SegmentSize = 0; |
| unsigned char *toWrite = exifInfo->makerNoteData; |
| |
| pCur = static_cast<unsigned char*>(pStartApp2); |
| |
| // Write Makernote up to ~64kB, then split to a new |
| // APP2 segment, if needed |
| while (bytesToWrite > 0) { |
| pApp2Start = pCur; |
| pCur += 4; // Skip 4 bytes for APP2 marker and length |
| |
| if (writeId) { |
| STDCOPY(pCur, MAKERNOTE_ID, sizeof(MAKERNOTE_ID)); |
| pCur += sizeof(MAKERNOTE_ID); |
| size += sizeof(MAKERNOTE_ID); |
| // ID overhead for one APP2 segment |
| bytesLeftForSegment -= sizeof(MAKERNOTE_ID); |
| } |
| |
| // Overhead for one APP2 segment: |
| bytesLeftForSegment -= (sizeof(App2Marker) + SIZEOF_LENGTH_FIELD); |
| |
| if (bytesToWrite > bytesLeftForSegment) { |
| // More data to write than what fits to one APP2 marker |
| writeCount = bytesLeftForSegment; |
| } else { |
| // All data fits to one APP2 segment |
| writeCount = bytesToWrite; |
| } |
| |
| bytesToWrite -= writeCount; |
| |
| STDCOPY(pCur, toWrite, writeCount); |
| pCur += writeCount; |
| toWrite += writeCount; |
| size += writeCount; |
| |
| // Last, put the APP2 marker to the beginning of the segment |
| STDCOPY(pApp2Start, App2Marker, sizeof(App2Marker)); |
| pApp2Start += sizeof(App2Marker); |
| |
| // Length field goes after the APP2 marker |
| app2SegmentSize = writeCount + SIZEOF_LENGTH_FIELD; // Raw data written + overhead |
| if (writeId) |
| app2SegmentSize += sizeof(MAKERNOTE_ID); |
| |
| writeMarkerSizeToBuf(pApp2Start, app2SegmentSize); |
| |
| // add the 2 bytes for both length field and APP2 marker, the caller has to know the total size |
| size += sizeof(App2Marker) + SIZEOF_LENGTH_FIELD; |
| |
| // Reset byte counts for another APP2 segment, if needed |
| bytesLeftForSegment = EXIF_SIZE_LIMITATION; |
| } |
| |
| return EXIF_SUCCESS; |
| } |
| |
| void ExifCreater::writeThumbData(unsigned char *pIfdStart, |
| unsigned char *pNextIfdOffset, |
| unsigned int *LongerTagOffset, |
| exif_attribute_t *exifInfo) |
| { |
| unsigned char *pCur; |
| unsigned int tmp; |
| |
| // firstly calc the exif total size, if it's > 64K, we'll disable the thumbnail |
| tmp = 4 + 6 + *LongerTagOffset; // 4 is APP1 marker and length; 6 is ExifIdentifierCode |
| tmp += NUM_SIZE + NUM_1TH_IFD_TIFF*IFD_SIZE + OFFSET_SIZE; |
| tmp += sizeof(exifInfo->x_resolution) + sizeof(exifInfo->y_resolution); |
| tmp += m_thumbSize; |
| |
| if(tmp > EXIF_SIZE_LIMITATION) { |
| LOGD("line:%d, in makeExif, exif total size(%d) > 64K, we'll disable thumbnail.", __LINE__, tmp); |
| m_thumbSize = 0; |
| m_thumbBuf = nullptr; |
| tmp = 0; |
| STDCOPY(pNextIfdOffset, (int8_t *) &tmp, OFFSET_SIZE); // NEXT IFD offset skipped on 0th IFD |
| } else { |
| tmp = *LongerTagOffset; |
| STDCOPY(pNextIfdOffset, (int8_t *) &tmp, OFFSET_SIZE); // NEXT IFD offset skipped on 0th IFD |
| |
| pCur = pIfdStart + *LongerTagOffset; |
| |
| tmp = NUM_1TH_IFD_TIFF; |
| STDCOPY(pCur, (int8_t *) &tmp, NUM_SIZE); |
| pCur += NUM_SIZE; |
| |
| *LongerTagOffset += NUM_SIZE + NUM_1TH_IFD_TIFF*IFD_SIZE + OFFSET_SIZE; |
| |
| writeExifIfd(&pCur, EXIF_TAG_IMAGE_WIDTH, EXIF_TYPE_LONG, |
| 1, exifInfo->widthThumb); |
| writeExifIfd(&pCur, EXIF_TAG_IMAGE_HEIGHT, EXIF_TYPE_LONG, |
| 1, exifInfo->heightThumb); |
| writeExifIfd(&pCur, EXIF_TAG_COMPRESSION_SCHEME, EXIF_TYPE_SHORT, |
| 1, exifInfo->compression_scheme); |
| writeExifIfd(&pCur, EXIF_TAG_ORIENTATION, EXIF_TYPE_SHORT, |
| 1, exifInfo->orientation); |
| writeExifIfd(&pCur, EXIF_TAG_X_RESOLUTION, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->x_resolution, LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_Y_RESOLUTION, EXIF_TYPE_RATIONAL, |
| 1, &exifInfo->y_resolution, LongerTagOffset, pIfdStart); |
| writeExifIfd(&pCur, EXIF_TAG_RESOLUTION_UNIT, EXIF_TYPE_SHORT, |
| 1, exifInfo->resolution_unit); |
| writeExifIfd(&pCur, EXIF_TAG_JPEG_INTERCHANGE_FORMAT, EXIF_TYPE_LONG, |
| 1, *LongerTagOffset); |
| writeExifIfd(&pCur, EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LEN, EXIF_TYPE_LONG, |
| 1, m_thumbSize); |
| |
| tmp = 0; |
| STDCOPY(pCur, (int8_t *) &tmp, OFFSET_SIZE); // next IFD offset |
| pCur += OFFSET_SIZE; |
| |
| STDCOPY(pIfdStart + *LongerTagOffset, m_thumbBuf, m_thumbSize); |
| *LongerTagOffset += m_thumbSize; |
| } |
| } |
| |
| void ExifCreater::writeExifIfd(unsigned char **pCur, |
| unsigned short tag, |
| unsigned short type, |
| unsigned int count, |
| uint32_t value) |
| { |
| STDCOPY(*pCur, (int8_t *) &tag, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &type, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &count, 4); |
| *pCur += 4; |
| STDCOPY(*pCur, (int8_t *) &value, 4); |
| *pCur += 4; |
| } |
| |
| void ExifCreater::writeExifIfd(unsigned char **pCur, |
| unsigned short tag, |
| unsigned short type, |
| unsigned int count, |
| unsigned char *pValue) |
| { |
| char buf[4] = { 0,}; |
| |
| STDCOPY(buf, pValue, count); |
| STDCOPY(*pCur, (int8_t *) &tag, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &type, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &count, 4); |
| *pCur += 4; |
| STDCOPY(*pCur, (int8_t *) buf, 4); |
| *pCur += 4; |
| } |
| |
| void ExifCreater::writeExifIfd(unsigned char **pCur, |
| unsigned short tag, |
| unsigned short type, |
| unsigned int count, |
| unsigned char *pValue, |
| unsigned int *offset, |
| unsigned char *start) |
| { |
| STDCOPY(*pCur, (int8_t *) &tag, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &type, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &count, 4); |
| *pCur += 4; |
| STDCOPY(*pCur, (int8_t *) offset, 4); |
| *pCur += 4; |
| STDCOPY(start + *offset, pValue, count); |
| *offset += count; |
| } |
| |
| void ExifCreater::writeExifIfd(unsigned char **pCur, |
| unsigned short tag, |
| unsigned short type, |
| unsigned int count, |
| rational_t *pValue, |
| unsigned int *offset, |
| unsigned char *start) |
| { |
| STDCOPY(*pCur, (int8_t *) &tag, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &type, 2); |
| *pCur += 2; |
| STDCOPY(*pCur, (int8_t *) &count, 4); |
| *pCur += 4; |
| STDCOPY(*pCur, (int8_t *) offset, 4); |
| *pCur += 4; |
| STDCOPY(start + *offset, (int8_t *) pValue, 8 * count); |
| *offset += 8 * count; |
| } |
| |
| } /* namespace intel */ |
| } /* namespace cros */ |
