Camera: Move common-helper target out of HIDL directory
This CL moves the common helper classes from inside the HIDL directory
and refactors the HIDL-esque namespaces to android style namespaces.
To preserve compatibility, the header files export the new symbols under
old namespace and the old build module exports symbols from the new
build module. This refactor is transparent to the codebase.
Also ran clangformat to appease the repohook gods.
Bug: 219974678
Test: Existing VTS tests pass on Cuttlefish
Change-Id: I8c3160497c1e2fe7a0a7155641f0e1f5e47ec32e
diff --git a/camera/common/default/Exif.cpp b/camera/common/default/Exif.cpp
new file mode 100644
index 0000000..f4b2a31
--- /dev/null
+++ b/camera/common/default/Exif.cpp
@@ -0,0 +1,1041 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * 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 "CamComm1.0-Exif"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+// #define LOG_NDEBUG 0
+
+#include <android/log.h>
+
+#include <inttypes.h>
+#include <math.h>
+#include <stdint.h>
+#include <string>
+#include <vector>
+
+#include "Exif.h"
+
+extern "C" {
+#include <libexif/exif-data.h>
+}
+
+namespace std {
+
+template <>
+struct default_delete<ExifEntry> {
+ inline void operator()(ExifEntry* entry) const { exif_entry_unref(entry); }
+};
+
+} // namespace std
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace common {
+namespace helper {
+
+class ExifUtilsImpl : public ExifUtils {
+ public:
+ ExifUtilsImpl();
+
+ virtual ~ExifUtilsImpl();
+
+ // Initialize() can be called multiple times. The setting of Exif tags will be
+ // cleared.
+ virtual bool initialize();
+
+ // set all known fields from a metadata structure
+ virtual bool setFromMetadata(const CameraMetadata& metadata, const size_t imageWidth,
+ const size_t imageHeight);
+
+ // sets the len aperture.
+ // Returns false if memory allocation fails.
+ virtual bool setAperture(uint32_t numerator, uint32_t denominator);
+
+ // sets the value of brightness.
+ // Returns false if memory allocation fails.
+ virtual bool setBrightness(int32_t numerator, int32_t denominator);
+
+ // sets the color space.
+ // Returns false if memory allocation fails.
+ virtual bool setColorSpace(uint16_t color_space);
+
+ // sets the information to compressed data.
+ // Returns false if memory allocation fails.
+ virtual bool setComponentsConfiguration(const std::string& components_configuration);
+
+ // sets the compression scheme used for the image data.
+ // Returns false if memory allocation fails.
+ virtual bool setCompression(uint16_t compression);
+
+ // sets image contrast.
+ // Returns false if memory allocation fails.
+ virtual bool setContrast(uint16_t contrast);
+
+ // sets the date and time of image last modified. It takes local time. The
+ // name of the tag is DateTime in IFD0.
+ // Returns false if memory allocation fails.
+ virtual bool setDateTime(const struct tm& t);
+
+ // sets the image description.
+ // Returns false if memory allocation fails.
+ virtual bool setDescription(const std::string& description);
+
+ // sets the digital zoom ratio. If the numerator is 0, it means digital zoom
+ // was not used.
+ // Returns false if memory allocation fails.
+ virtual bool setDigitalZoomRatio(uint32_t numerator, uint32_t denominator);
+
+ // sets the exposure bias.
+ // Returns false if memory allocation fails.
+ virtual bool setExposureBias(int32_t numerator, int32_t denominator);
+
+ // sets the exposure mode set when the image was shot.
+ // Returns false if memory allocation fails.
+ virtual bool setExposureMode(uint16_t exposure_mode);
+
+ // sets the program used by the camera to set exposure when the picture is
+ // taken.
+ // Returns false if memory allocation fails.
+ virtual bool setExposureProgram(uint16_t exposure_program);
+
+ // sets the exposure time, given in seconds.
+ // Returns false if memory allocation fails.
+ virtual bool setExposureTime(uint32_t numerator, uint32_t denominator);
+
+ // sets the status of flash.
+ // Returns false if memory allocation fails.
+ virtual bool setFlash(uint16_t flash);
+
+ // sets the F number.
+ // Returns false if memory allocation fails.
+ virtual bool setFNumber(uint32_t numerator, uint32_t denominator);
+
+ // sets the focal length of lens used to take the image in millimeters.
+ // Returns false if memory allocation fails.
+ virtual bool setFocalLength(uint32_t numerator, uint32_t denominator);
+
+ // sets the degree of overall image gain adjustment.
+ // Returns false if memory allocation fails.
+ virtual bool setGainControl(uint16_t gain_control);
+
+ // sets the altitude in meters.
+ // Returns false if memory allocation fails.
+ virtual bool setGpsAltitude(double altitude);
+
+ // sets the latitude with degrees minutes seconds format.
+ // Returns false if memory allocation fails.
+ virtual bool setGpsLatitude(double latitude);
+
+ // sets the longitude with degrees minutes seconds format.
+ // Returns false if memory allocation fails.
+ virtual bool setGpsLongitude(double longitude);
+
+ // sets GPS processing method.
+ // Returns false if memory allocation fails.
+ virtual bool setGpsProcessingMethod(const std::string& method);
+
+ // sets GPS date stamp and time stamp (atomic clock). It takes UTC time.
+ // Returns false if memory allocation fails.
+ virtual bool setGpsTimestamp(const struct tm& t);
+
+ // sets the length (number of rows) of main image.
+ // Returns false if memory allocation fails.
+ virtual bool setImageHeight(uint32_t length);
+
+ // sets the width (number of columes) of main image.
+ // Returns false if memory allocation fails.
+ virtual bool setImageWidth(uint32_t width);
+
+ // sets the ISO speed.
+ // Returns false if memory allocation fails.
+ virtual bool setIsoSpeedRating(uint16_t iso_speed_ratings);
+
+ // sets the kind of light source.
+ // Returns false if memory allocation fails.
+ virtual bool setLightSource(uint16_t light_source);
+
+ // sets the smallest F number of the lens.
+ // Returns false if memory allocation fails.
+ virtual bool setMaxAperture(uint32_t numerator, uint32_t denominator);
+
+ // sets the metering mode.
+ // Returns false if memory allocation fails.
+ virtual bool setMeteringMode(uint16_t metering_mode);
+
+ // sets image orientation.
+ // Returns false if memory allocation fails.
+ virtual bool setOrientation(uint16_t orientation);
+
+ // sets the unit for measuring XResolution and YResolution.
+ // Returns false if memory allocation fails.
+ virtual bool setResolutionUnit(uint16_t resolution_unit);
+
+ // sets image saturation.
+ // Returns false if memory allocation fails.
+ virtual bool setSaturation(uint16_t saturation);
+
+ // sets the type of scene that was shot.
+ // Returns false if memory allocation fails.
+ virtual bool setSceneCaptureType(uint16_t type);
+
+ // sets image sharpness.
+ // Returns false if memory allocation fails.
+ virtual bool setSharpness(uint16_t sharpness);
+
+ // sets the shutter speed.
+ // Returns false if memory allocation fails.
+ virtual bool setShutterSpeed(int32_t numerator, int32_t denominator);
+
+ // sets the distance to the subject, given in meters.
+ // Returns false if memory allocation fails.
+ virtual bool setSubjectDistance(uint32_t numerator, uint32_t denominator);
+
+ // sets the fractions of seconds for the <DateTime> tag.
+ // Returns false if memory allocation fails.
+ virtual bool setSubsecTime(const std::string& subsec_time);
+
+ // sets the white balance mode set when the image was shot.
+ // Returns false if memory allocation fails.
+ virtual bool setWhiteBalance(uint16_t white_balance);
+
+ // sets the number of pixels per resolution unit in the image width.
+ // Returns false if memory allocation fails.
+ virtual bool setXResolution(uint32_t numerator, uint32_t denominator);
+
+ // sets the position of chrominance components in relation to the luminance
+ // component.
+ // Returns false if memory allocation fails.
+ virtual bool setYCbCrPositioning(uint16_t ycbcr_positioning);
+
+ // sets the number of pixels per resolution unit in the image length.
+ // Returns false if memory allocation fails.
+ virtual bool setYResolution(uint32_t numerator, uint32_t denominator);
+
+ // sets the manufacturer of camera.
+ // Returns false if memory allocation fails.
+ virtual bool setMake(const std::string& make);
+
+ // sets the model number of camera.
+ // Returns false if memory allocation fails.
+ virtual bool setModel(const std::string& model);
+
+ // Generates APP1 segment.
+ // Returns false if generating APP1 segment fails.
+ virtual bool generateApp1(const void* thumbnail_buffer, uint32_t size);
+
+ // Gets buffer of APP1 segment. This method must be called only after calling
+ // GenerateAPP1().
+ virtual const uint8_t* getApp1Buffer();
+
+ // Gets length of APP1 segment. This method must be called only after calling
+ // GenerateAPP1().
+ virtual unsigned int getApp1Length();
+
+ protected:
+ // sets the version of this standard supported.
+ // Returns false if memory allocation fails.
+ virtual bool setExifVersion(const std::string& exif_version);
+
+ // Resets the pointers and memories.
+ virtual void reset();
+
+ // Adds a variable length tag to |exif_data_|. It will remove the original one
+ // if the tag exists.
+ // Returns the entry of the tag. The reference count of returned ExifEntry is
+ // two.
+ virtual std::unique_ptr<ExifEntry> addVariableLengthEntry(ExifIfd ifd, ExifTag tag,
+ ExifFormat format,
+ uint64_t components,
+ unsigned int size);
+
+ // Adds a entry of |tag| in |exif_data_|. It won't remove the original one if
+ // the tag exists.
+ // Returns the entry of the tag. It adds one reference count to returned
+ // ExifEntry.
+ virtual std::unique_ptr<ExifEntry> addEntry(ExifIfd ifd, ExifTag tag);
+
+ // Helpe functions to add exif data with different types.
+ virtual bool setShort(ExifIfd ifd, ExifTag tag, uint16_t value, const std::string& msg);
+
+ virtual bool setLong(ExifIfd ifd, ExifTag tag, uint32_t value, const std::string& msg);
+
+ virtual bool setRational(ExifIfd ifd, ExifTag tag, uint32_t numerator, uint32_t denominator,
+ const std::string& msg);
+
+ virtual bool setSRational(ExifIfd ifd, ExifTag tag, int32_t numerator, int32_t denominator,
+ const std::string& msg);
+
+ virtual bool setString(ExifIfd ifd, ExifTag tag, ExifFormat format, const std::string& buffer,
+ const std::string& msg);
+
+ // Destroys the buffer of APP1 segment if exists.
+ virtual void destroyApp1();
+
+ // The Exif data (APP1). Owned by this class.
+ ExifData* exif_data_;
+ // The raw data of APP1 segment. It's allocated by ExifMem in |exif_data_| but
+ // owned by this class.
+ uint8_t* app1_buffer_;
+ // The length of |app1_buffer_|.
+ unsigned int app1_length_;
+};
+
+#define SET_SHORT(ifd, tag, value) \
+ do { \
+ if (setShort(ifd, tag, value, #tag) == false) return false; \
+ } while (0);
+
+#define SET_LONG(ifd, tag, value) \
+ do { \
+ if (setLong(ifd, tag, value, #tag) == false) return false; \
+ } while (0);
+
+#define SET_RATIONAL(ifd, tag, numerator, denominator) \
+ do { \
+ if (setRational(ifd, tag, numerator, denominator, #tag) == false) return false; \
+ } while (0);
+
+#define SET_SRATIONAL(ifd, tag, numerator, denominator) \
+ do { \
+ if (setSRational(ifd, tag, numerator, denominator, #tag) == false) return false; \
+ } while (0);
+
+#define SET_STRING(ifd, tag, format, buffer) \
+ do { \
+ if (setString(ifd, tag, format, buffer, #tag) == false) return false; \
+ } while (0);
+
+// This comes from the Exif Version 2.2 standard table 6.
+const char gExifAsciiPrefix[] = {0x41, 0x53, 0x43, 0x49, 0x49, 0x0, 0x0, 0x0};
+
+static void setLatitudeOrLongitudeData(unsigned char* data, double num) {
+ // Take the integer part of |num|.
+ ExifLong degrees = static_cast<ExifLong>(num);
+ ExifLong minutes = static_cast<ExifLong>(60 * (num - degrees));
+ ExifLong microseconds = static_cast<ExifLong>(3600000000u * (num - degrees - minutes / 60.0));
+ exif_set_rational(data, EXIF_BYTE_ORDER_INTEL, {degrees, 1});
+ exif_set_rational(data + sizeof(ExifRational), EXIF_BYTE_ORDER_INTEL, {minutes, 1});
+ exif_set_rational(data + 2 * sizeof(ExifRational), EXIF_BYTE_ORDER_INTEL,
+ {microseconds, 1000000});
+}
+
+ExifUtils* ExifUtils::create() {
+ return new ExifUtilsImpl();
+}
+
+ExifUtils::~ExifUtils() {}
+
+ExifUtilsImpl::ExifUtilsImpl() : exif_data_(nullptr), app1_buffer_(nullptr), app1_length_(0) {}
+
+ExifUtilsImpl::~ExifUtilsImpl() {
+ reset();
+}
+
+bool ExifUtilsImpl::initialize() {
+ reset();
+ exif_data_ = exif_data_new();
+ if (exif_data_ == nullptr) {
+ ALOGE("%s: allocate memory for exif_data_ failed", __FUNCTION__);
+ return false;
+ }
+ // set the image options.
+ exif_data_set_option(exif_data_, EXIF_DATA_OPTION_FOLLOW_SPECIFICATION);
+ exif_data_set_data_type(exif_data_, EXIF_DATA_TYPE_COMPRESSED);
+ exif_data_set_byte_order(exif_data_, EXIF_BYTE_ORDER_INTEL);
+
+ // set exif version to 2.2.
+ if (!setExifVersion("0220")) {
+ return false;
+ }
+
+ return true;
+}
+
+bool ExifUtilsImpl::setAperture(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_APERTURE_VALUE, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setBrightness(int32_t numerator, int32_t denominator) {
+ SET_SRATIONAL(EXIF_IFD_EXIF, EXIF_TAG_BRIGHTNESS_VALUE, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setColorSpace(uint16_t color_space) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_COLOR_SPACE, color_space);
+ return true;
+}
+
+bool ExifUtilsImpl::setComponentsConfiguration(const std::string& components_configuration) {
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_COMPONENTS_CONFIGURATION, EXIF_FORMAT_UNDEFINED,
+ components_configuration);
+ return true;
+}
+
+bool ExifUtilsImpl::setCompression(uint16_t compression) {
+ SET_SHORT(EXIF_IFD_0, EXIF_TAG_COMPRESSION, compression);
+ return true;
+}
+
+bool ExifUtilsImpl::setContrast(uint16_t contrast) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_CONTRAST, contrast);
+ return true;
+}
+
+bool ExifUtilsImpl::setDateTime(const struct tm& t) {
+ // The length is 20 bytes including NULL for termination in Exif standard.
+ char str[20];
+ int result = snprintf(str, sizeof(str), "%04i:%02i:%02i %02i:%02i:%02i", t.tm_year + 1900,
+ t.tm_mon + 1, t.tm_mday, t.tm_hour, t.tm_min, t.tm_sec);
+ if (result != sizeof(str) - 1) {
+ ALOGW("%s: Input time is invalid", __FUNCTION__);
+ return false;
+ }
+ std::string buffer(str);
+ SET_STRING(EXIF_IFD_0, EXIF_TAG_DATE_TIME, EXIF_FORMAT_ASCII, buffer);
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_DATE_TIME_ORIGINAL, EXIF_FORMAT_ASCII, buffer);
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_DATE_TIME_DIGITIZED, EXIF_FORMAT_ASCII, buffer);
+ return true;
+}
+
+bool ExifUtilsImpl::setDescription(const std::string& description) {
+ SET_STRING(EXIF_IFD_0, EXIF_TAG_IMAGE_DESCRIPTION, EXIF_FORMAT_ASCII, description);
+ return true;
+}
+
+bool ExifUtilsImpl::setDigitalZoomRatio(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_DIGITAL_ZOOM_RATIO, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setExposureBias(int32_t numerator, int32_t denominator) {
+ SET_SRATIONAL(EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_BIAS_VALUE, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setExposureMode(uint16_t exposure_mode) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_MODE, exposure_mode);
+ return true;
+}
+
+bool ExifUtilsImpl::setExposureProgram(uint16_t exposure_program) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_PROGRAM, exposure_program);
+ return true;
+}
+
+bool ExifUtilsImpl::setExposureTime(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_EXPOSURE_TIME, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setFlash(uint16_t flash) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_FLASH, flash);
+ return true;
+}
+
+bool ExifUtilsImpl::setFNumber(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_FNUMBER, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setFocalLength(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_FOCAL_LENGTH, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setGainControl(uint16_t gain_control) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_GAIN_CONTROL, gain_control);
+ return true;
+}
+
+bool ExifUtilsImpl::setGpsAltitude(double altitude) {
+ ExifTag refTag = static_cast<ExifTag>(EXIF_TAG_GPS_ALTITUDE_REF);
+ std::unique_ptr<ExifEntry> refEntry =
+ addVariableLengthEntry(EXIF_IFD_GPS, refTag, EXIF_FORMAT_BYTE, 1, 1);
+ if (!refEntry) {
+ ALOGE("%s: Adding GPSAltitudeRef exif entry failed", __FUNCTION__);
+ return false;
+ }
+ if (altitude >= 0) {
+ *refEntry->data = 0;
+ } else {
+ *refEntry->data = 1;
+ altitude *= -1;
+ }
+
+ ExifTag tag = static_cast<ExifTag>(EXIF_TAG_GPS_ALTITUDE);
+ std::unique_ptr<ExifEntry> entry = addVariableLengthEntry(
+ EXIF_IFD_GPS, tag, EXIF_FORMAT_RATIONAL, 1, sizeof(ExifRational));
+ if (!entry) {
+ exif_content_remove_entry(exif_data_->ifd[EXIF_IFD_GPS], refEntry.get());
+ ALOGE("%s: Adding GPSAltitude exif entry failed", __FUNCTION__);
+ return false;
+ }
+ exif_set_rational(entry->data, EXIF_BYTE_ORDER_INTEL,
+ {static_cast<ExifLong>(altitude * 1000), 1000});
+
+ return true;
+}
+
+bool ExifUtilsImpl::setGpsLatitude(double latitude) {
+ const ExifTag refTag = static_cast<ExifTag>(EXIF_TAG_GPS_LATITUDE_REF);
+ std::unique_ptr<ExifEntry> refEntry =
+ addVariableLengthEntry(EXIF_IFD_GPS, refTag, EXIF_FORMAT_ASCII, 2, 2);
+ if (!refEntry) {
+ ALOGE("%s: Adding GPSLatitudeRef exif entry failed", __FUNCTION__);
+ return false;
+ }
+ if (latitude >= 0) {
+ memcpy(refEntry->data, "N", sizeof("N"));
+ } else {
+ memcpy(refEntry->data, "S", sizeof("S"));
+ latitude *= -1;
+ }
+
+ const ExifTag tag = static_cast<ExifTag>(EXIF_TAG_GPS_LATITUDE);
+ std::unique_ptr<ExifEntry> entry = addVariableLengthEntry(
+ EXIF_IFD_GPS, tag, EXIF_FORMAT_RATIONAL, 3, 3 * sizeof(ExifRational));
+ if (!entry) {
+ exif_content_remove_entry(exif_data_->ifd[EXIF_IFD_GPS], refEntry.get());
+ ALOGE("%s: Adding GPSLatitude exif entry failed", __FUNCTION__);
+ return false;
+ }
+ setLatitudeOrLongitudeData(entry->data, latitude);
+
+ return true;
+}
+
+bool ExifUtilsImpl::setGpsLongitude(double longitude) {
+ ExifTag refTag = static_cast<ExifTag>(EXIF_TAG_GPS_LONGITUDE_REF);
+ std::unique_ptr<ExifEntry> refEntry =
+ addVariableLengthEntry(EXIF_IFD_GPS, refTag, EXIF_FORMAT_ASCII, 2, 2);
+ if (!refEntry) {
+ ALOGE("%s: Adding GPSLongitudeRef exif entry failed", __FUNCTION__);
+ return false;
+ }
+ if (longitude >= 0) {
+ memcpy(refEntry->data, "E", sizeof("E"));
+ } else {
+ memcpy(refEntry->data, "W", sizeof("W"));
+ longitude *= -1;
+ }
+
+ ExifTag tag = static_cast<ExifTag>(EXIF_TAG_GPS_LONGITUDE);
+ std::unique_ptr<ExifEntry> entry = addVariableLengthEntry(
+ EXIF_IFD_GPS, tag, EXIF_FORMAT_RATIONAL, 3, 3 * sizeof(ExifRational));
+ if (!entry) {
+ exif_content_remove_entry(exif_data_->ifd[EXIF_IFD_GPS], refEntry.get());
+ ALOGE("%s: Adding GPSLongitude exif entry failed", __FUNCTION__);
+ return false;
+ }
+ setLatitudeOrLongitudeData(entry->data, longitude);
+
+ return true;
+}
+
+bool ExifUtilsImpl::setGpsProcessingMethod(const std::string& method) {
+ std::string buffer = std::string(gExifAsciiPrefix, sizeof(gExifAsciiPrefix)) + method;
+ SET_STRING(EXIF_IFD_GPS, static_cast<ExifTag>(EXIF_TAG_GPS_PROCESSING_METHOD),
+ EXIF_FORMAT_UNDEFINED, buffer);
+ return true;
+}
+
+bool ExifUtilsImpl::setGpsTimestamp(const struct tm& t) {
+ const ExifTag dateTag = static_cast<ExifTag>(EXIF_TAG_GPS_DATE_STAMP);
+ const size_t kGpsDateStampSize = 11;
+ std::unique_ptr<ExifEntry> entry = addVariableLengthEntry(
+ EXIF_IFD_GPS, dateTag, EXIF_FORMAT_ASCII, kGpsDateStampSize, kGpsDateStampSize);
+ if (!entry) {
+ ALOGE("%s: Adding GPSDateStamp exif entry failed", __FUNCTION__);
+ return false;
+ }
+ int result = snprintf(reinterpret_cast<char*>(entry->data), kGpsDateStampSize, "%04i:%02i:%02i",
+ t.tm_year + 1900, t.tm_mon + 1, t.tm_mday);
+ if (result != kGpsDateStampSize - 1) {
+ ALOGW("%s: Input time is invalid", __FUNCTION__);
+ return false;
+ }
+
+ const ExifTag timeTag = static_cast<ExifTag>(EXIF_TAG_GPS_TIME_STAMP);
+ entry = addVariableLengthEntry(EXIF_IFD_GPS, timeTag, EXIF_FORMAT_RATIONAL, 3,
+ 3 * sizeof(ExifRational));
+ if (!entry) {
+ ALOGE("%s: Adding GPSTimeStamp exif entry failed", __FUNCTION__);
+ return false;
+ }
+ exif_set_rational(entry->data, EXIF_BYTE_ORDER_INTEL, {static_cast<ExifLong>(t.tm_hour), 1});
+ exif_set_rational(entry->data + sizeof(ExifRational), EXIF_BYTE_ORDER_INTEL,
+ {static_cast<ExifLong>(t.tm_min), 1});
+ exif_set_rational(entry->data + 2 * sizeof(ExifRational), EXIF_BYTE_ORDER_INTEL,
+ {static_cast<ExifLong>(t.tm_sec), 1});
+
+ return true;
+}
+
+bool ExifUtilsImpl::setImageHeight(uint32_t length) {
+ SET_SHORT(EXIF_IFD_0, EXIF_TAG_IMAGE_LENGTH, length);
+ SET_LONG(EXIF_IFD_EXIF, EXIF_TAG_PIXEL_Y_DIMENSION, length);
+ return true;
+}
+
+bool ExifUtilsImpl::setImageWidth(uint32_t width) {
+ SET_SHORT(EXIF_IFD_0, EXIF_TAG_IMAGE_WIDTH, width);
+ SET_LONG(EXIF_IFD_EXIF, EXIF_TAG_PIXEL_X_DIMENSION, width);
+ return true;
+}
+
+bool ExifUtilsImpl::setIsoSpeedRating(uint16_t iso_speed_ratings) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_ISO_SPEED_RATINGS, iso_speed_ratings);
+ return true;
+}
+
+bool ExifUtilsImpl::setLightSource(uint16_t light_source) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_LIGHT_SOURCE, light_source);
+ return true;
+}
+
+bool ExifUtilsImpl::setMaxAperture(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_MAX_APERTURE_VALUE, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setMeteringMode(uint16_t metering_mode) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_METERING_MODE, metering_mode);
+ return true;
+}
+
+bool ExifUtilsImpl::setOrientation(uint16_t orientation) {
+ /*
+ * Orientation value:
+ * 1 2 3 4 5 6 7 8
+ *
+ * 888888 888888 88 88 8888888888 88 88 8888888888
+ * 88 88 88 88 88 88 88 88 88 88 88 88
+ * 8888 8888 8888 8888 88 8888888888 8888888888 88
+ * 88 88 88 88
+ * 88 88 888888 888888
+ */
+ int value = 1;
+ switch (orientation) {
+ case 90:
+ value = 6;
+ break;
+ case 180:
+ value = 3;
+ break;
+ case 270:
+ value = 8;
+ break;
+ default:
+ break;
+ }
+ SET_SHORT(EXIF_IFD_0, EXIF_TAG_ORIENTATION, value);
+ return true;
+}
+
+bool ExifUtilsImpl::setResolutionUnit(uint16_t resolution_unit) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_RESOLUTION_UNIT, resolution_unit);
+ return true;
+}
+
+bool ExifUtilsImpl::setSaturation(uint16_t saturation) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_SATURATION, saturation);
+ return true;
+}
+
+bool ExifUtilsImpl::setSceneCaptureType(uint16_t type) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_SCENE_CAPTURE_TYPE, type);
+ return true;
+}
+
+bool ExifUtilsImpl::setSharpness(uint16_t sharpness) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_SHARPNESS, sharpness);
+ return true;
+}
+
+bool ExifUtilsImpl::setShutterSpeed(int32_t numerator, int32_t denominator) {
+ SET_SRATIONAL(EXIF_IFD_EXIF, EXIF_TAG_SHUTTER_SPEED_VALUE, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setSubjectDistance(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_SUBJECT_DISTANCE, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setSubsecTime(const std::string& subsec_time) {
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_SUB_SEC_TIME, EXIF_FORMAT_ASCII, subsec_time);
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_SUB_SEC_TIME_ORIGINAL, EXIF_FORMAT_ASCII, subsec_time);
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_SUB_SEC_TIME_DIGITIZED, EXIF_FORMAT_ASCII, subsec_time);
+ return true;
+}
+
+bool ExifUtilsImpl::setWhiteBalance(uint16_t white_balance) {
+ SET_SHORT(EXIF_IFD_EXIF, EXIF_TAG_WHITE_BALANCE, white_balance);
+ return true;
+}
+
+bool ExifUtilsImpl::setXResolution(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_X_RESOLUTION, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::setYCbCrPositioning(uint16_t ycbcr_positioning) {
+ SET_SHORT(EXIF_IFD_0, EXIF_TAG_YCBCR_POSITIONING, ycbcr_positioning);
+ return true;
+}
+
+bool ExifUtilsImpl::setYResolution(uint32_t numerator, uint32_t denominator) {
+ SET_RATIONAL(EXIF_IFD_EXIF, EXIF_TAG_Y_RESOLUTION, numerator, denominator);
+ return true;
+}
+
+bool ExifUtilsImpl::generateApp1(const void* thumbnail_buffer, uint32_t size) {
+ destroyApp1();
+ exif_data_->data = const_cast<uint8_t*>(static_cast<const uint8_t*>(thumbnail_buffer));
+ exif_data_->size = size;
+ // Save the result into |app1_buffer_|.
+ exif_data_save_data(exif_data_, &app1_buffer_, &app1_length_);
+ if (!app1_length_) {
+ ALOGE("%s: Allocate memory for app1_buffer_ failed", __FUNCTION__);
+ return false;
+ }
+ /*
+ * The JPEG segment size is 16 bits in spec. The size of APP1 segment should
+ * be smaller than 65533 because there are two bytes for segment size field.
+ */
+ if (app1_length_ > 65533) {
+ destroyApp1();
+ ALOGE("%s: The size of APP1 segment is too large", __FUNCTION__);
+ return false;
+ }
+ return true;
+}
+
+const uint8_t* ExifUtilsImpl::getApp1Buffer() {
+ return app1_buffer_;
+}
+
+unsigned int ExifUtilsImpl::getApp1Length() {
+ return app1_length_;
+}
+
+bool ExifUtilsImpl::setExifVersion(const std::string& exif_version) {
+ SET_STRING(EXIF_IFD_EXIF, EXIF_TAG_EXIF_VERSION, EXIF_FORMAT_UNDEFINED, exif_version);
+ return true;
+}
+
+bool ExifUtilsImpl::setMake(const std::string& make) {
+ SET_STRING(EXIF_IFD_0, EXIF_TAG_MAKE, EXIF_FORMAT_ASCII, make);
+ return true;
+}
+
+bool ExifUtilsImpl::setModel(const std::string& model) {
+ SET_STRING(EXIF_IFD_0, EXIF_TAG_MODEL, EXIF_FORMAT_ASCII, model);
+ return true;
+}
+
+void ExifUtilsImpl::reset() {
+ destroyApp1();
+ if (exif_data_) {
+ /*
+ * Since we decided to ignore the original APP1, we are sure that there is
+ * no thumbnail allocated by libexif. |exif_data_->data| is actually
+ * allocated by JpegCompressor. sets |exif_data_->data| to nullptr to
+ * prevent exif_data_unref() destroy it incorrectly.
+ */
+ exif_data_->data = nullptr;
+ exif_data_->size = 0;
+ exif_data_unref(exif_data_);
+ exif_data_ = nullptr;
+ }
+}
+
+std::unique_ptr<ExifEntry> ExifUtilsImpl::addVariableLengthEntry(ExifIfd ifd, ExifTag tag,
+ ExifFormat format,
+ uint64_t components,
+ unsigned int size) {
+ // Remove old entry if exists.
+ exif_content_remove_entry(exif_data_->ifd[ifd],
+ exif_content_get_entry(exif_data_->ifd[ifd], tag));
+ ExifMem* mem = exif_mem_new_default();
+ if (!mem) {
+ ALOGE("%s: Allocate memory for exif entry failed", __FUNCTION__);
+ return nullptr;
+ }
+ std::unique_ptr<ExifEntry> entry(exif_entry_new_mem(mem));
+ if (!entry) {
+ ALOGE("%s: Allocate memory for exif entry failed", __FUNCTION__);
+ exif_mem_unref(mem);
+ return nullptr;
+ }
+ void* tmpBuffer = exif_mem_alloc(mem, size);
+ if (!tmpBuffer) {
+ ALOGE("%s: Allocate memory for exif entry failed", __FUNCTION__);
+ exif_mem_unref(mem);
+ return nullptr;
+ }
+
+ entry->data = static_cast<unsigned char*>(tmpBuffer);
+ entry->tag = tag;
+ entry->format = format;
+ entry->components = components;
+ entry->size = size;
+
+ exif_content_add_entry(exif_data_->ifd[ifd], entry.get());
+ exif_mem_unref(mem);
+
+ return entry;
+}
+
+std::unique_ptr<ExifEntry> ExifUtilsImpl::addEntry(ExifIfd ifd, ExifTag tag) {
+ std::unique_ptr<ExifEntry> entry(exif_content_get_entry(exif_data_->ifd[ifd], tag));
+ if (entry) {
+ // exif_content_get_entry() won't ref the entry, so we ref here.
+ exif_entry_ref(entry.get());
+ return entry;
+ }
+ entry.reset(exif_entry_new());
+ if (!entry) {
+ ALOGE("%s: Allocate memory for exif entry failed", __FUNCTION__);
+ return nullptr;
+ }
+ entry->tag = tag;
+ exif_content_add_entry(exif_data_->ifd[ifd], entry.get());
+ exif_entry_initialize(entry.get(), tag);
+ return entry;
+}
+
+bool ExifUtilsImpl::setShort(ExifIfd ifd, ExifTag tag, uint16_t value, const std::string& msg) {
+ std::unique_ptr<ExifEntry> entry = addEntry(ifd, tag);
+ if (!entry) {
+ ALOGE("%s: Adding '%s' entry failed", __FUNCTION__, msg.c_str());
+ return false;
+ }
+ exif_set_short(entry->data, EXIF_BYTE_ORDER_INTEL, value);
+ return true;
+}
+
+bool ExifUtilsImpl::setLong(ExifIfd ifd, ExifTag tag, uint32_t value, const std::string& msg) {
+ std::unique_ptr<ExifEntry> entry = addEntry(ifd, tag);
+ if (!entry) {
+ ALOGE("%s: Adding '%s' entry failed", __FUNCTION__, msg.c_str());
+ return false;
+ }
+ exif_set_long(entry->data, EXIF_BYTE_ORDER_INTEL, value);
+ return true;
+}
+
+bool ExifUtilsImpl::setRational(ExifIfd ifd, ExifTag tag, uint32_t numerator, uint32_t denominator,
+ const std::string& msg) {
+ std::unique_ptr<ExifEntry> entry = addEntry(ifd, tag);
+ if (!entry) {
+ ALOGE("%s: Adding '%s' entry failed", __FUNCTION__, msg.c_str());
+ return false;
+ }
+ exif_set_rational(entry->data, EXIF_BYTE_ORDER_INTEL, {numerator, denominator});
+ return true;
+}
+
+bool ExifUtilsImpl::setSRational(ExifIfd ifd, ExifTag tag, int32_t numerator, int32_t denominator,
+ const std::string& msg) {
+ std::unique_ptr<ExifEntry> entry = addEntry(ifd, tag);
+ if (!entry) {
+ ALOGE("%s: Adding '%s' entry failed", __FUNCTION__, msg.c_str());
+ return false;
+ }
+ exif_set_srational(entry->data, EXIF_BYTE_ORDER_INTEL, {numerator, denominator});
+ return true;
+}
+
+bool ExifUtilsImpl::setString(ExifIfd ifd, ExifTag tag, ExifFormat format,
+ const std::string& buffer, const std::string& msg) {
+ size_t entry_size = buffer.length();
+ // Since the exif format is undefined, NULL termination is not necessary.
+ if (format == EXIF_FORMAT_ASCII) {
+ entry_size++;
+ }
+ std::unique_ptr<ExifEntry> entry =
+ addVariableLengthEntry(ifd, tag, format, entry_size, entry_size);
+ if (!entry) {
+ ALOGE("%s: Adding '%s' entry failed", __FUNCTION__, msg.c_str());
+ return false;
+ }
+ memcpy(entry->data, buffer.c_str(), entry_size);
+ return true;
+}
+
+void ExifUtilsImpl::destroyApp1() {
+ /*
+ * Since there is no API to access ExifMem in ExifData->priv, we use free
+ * here, which is the default free function in libexif. See
+ * exif_data_save_data() for detail.
+ */
+ free(app1_buffer_);
+ app1_buffer_ = nullptr;
+ app1_length_ = 0;
+}
+
+bool ExifUtilsImpl::setFromMetadata(const CameraMetadata& metadata, const size_t imageWidth,
+ const size_t imageHeight) {
+ // How precise the float-to-rational conversion for EXIF tags would be.
+ constexpr int kRationalPrecision = 10000;
+ if (!setImageWidth(imageWidth) || !setImageHeight(imageHeight)) {
+ ALOGE("%s: setting image resolution failed.", __FUNCTION__);
+ return false;
+ }
+
+ struct timespec tp;
+ struct tm time_info;
+ bool time_available = clock_gettime(CLOCK_REALTIME, &tp) != -1;
+ localtime_r(&tp.tv_sec, &time_info);
+ if (!setDateTime(time_info)) {
+ ALOGE("%s: setting data time failed.", __FUNCTION__);
+ return false;
+ }
+
+ float focal_length;
+ camera_metadata_ro_entry entry = metadata.find(ANDROID_LENS_FOCAL_LENGTH);
+ if (entry.count) {
+ focal_length = entry.data.f[0];
+
+ if (!setFocalLength(static_cast<uint32_t>(focal_length * kRationalPrecision),
+ kRationalPrecision)) {
+ ALOGE("%s: setting focal length failed.", __FUNCTION__);
+ return false;
+ }
+ } else {
+ ALOGV("%s: Cannot find focal length in metadata.", __FUNCTION__);
+ }
+
+ if (metadata.exists(ANDROID_JPEG_GPS_COORDINATES)) {
+ entry = metadata.find(ANDROID_JPEG_GPS_COORDINATES);
+ if (entry.count < 3) {
+ ALOGE("%s: Gps coordinates in metadata is not complete.", __FUNCTION__);
+ return false;
+ }
+ if (!setGpsLatitude(entry.data.d[0])) {
+ ALOGE("%s: setting gps latitude failed.", __FUNCTION__);
+ return false;
+ }
+ if (!setGpsLongitude(entry.data.d[1])) {
+ ALOGE("%s: setting gps longitude failed.", __FUNCTION__);
+ return false;
+ }
+ if (!setGpsAltitude(entry.data.d[2])) {
+ ALOGE("%s: setting gps altitude failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ if (metadata.exists(ANDROID_JPEG_GPS_PROCESSING_METHOD)) {
+ entry = metadata.find(ANDROID_JPEG_GPS_PROCESSING_METHOD);
+ std::string method_str(reinterpret_cast<const char*>(entry.data.u8));
+ if (!setGpsProcessingMethod(method_str)) {
+ ALOGE("%s: setting gps processing method failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ if (time_available && metadata.exists(ANDROID_JPEG_GPS_TIMESTAMP)) {
+ entry = metadata.find(ANDROID_JPEG_GPS_TIMESTAMP);
+ time_t timestamp = static_cast<time_t>(entry.data.i64[0]);
+ if (gmtime_r(×tamp, &time_info)) {
+ if (!setGpsTimestamp(time_info)) {
+ ALOGE("%s: setting gps timestamp failed.", __FUNCTION__);
+ return false;
+ }
+ } else {
+ ALOGE("%s: Time tranformation failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ if (metadata.exists(ANDROID_JPEG_ORIENTATION)) {
+ entry = metadata.find(ANDROID_JPEG_ORIENTATION);
+ if (!setOrientation(entry.data.i32[0])) {
+ ALOGE("%s: setting orientation failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ if (metadata.exists(ANDROID_SENSOR_EXPOSURE_TIME)) {
+ entry = metadata.find(ANDROID_SENSOR_EXPOSURE_TIME);
+ // int64_t of nanoseconds
+ if (!setExposureTime(entry.data.i64[0], 1000000000u)) {
+ ALOGE("%s: setting exposure time failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ if (metadata.exists(ANDROID_LENS_APERTURE)) {
+ const int kAperturePrecision = 10000;
+ entry = metadata.find(ANDROID_LENS_APERTURE);
+ if (!setFNumber(entry.data.f[0] * kAperturePrecision, kAperturePrecision)) {
+ ALOGE("%s: setting F number failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ if (metadata.exists(ANDROID_FLASH_INFO_AVAILABLE)) {
+ entry = metadata.find(ANDROID_FLASH_INFO_AVAILABLE);
+ if (entry.data.u8[0] == ANDROID_FLASH_INFO_AVAILABLE_FALSE) {
+ const uint32_t kNoFlashFunction = 0x20;
+ if (!setFlash(kNoFlashFunction)) {
+ ALOGE("%s: setting flash failed.", __FUNCTION__);
+ return false;
+ }
+ } else {
+ ALOGE("%s: Unsupported flash info: %d", __FUNCTION__, entry.data.u8[0]);
+ return false;
+ }
+ }
+
+ if (metadata.exists(ANDROID_CONTROL_AWB_MODE)) {
+ entry = metadata.find(ANDROID_CONTROL_AWB_MODE);
+ if (entry.data.u8[0] == ANDROID_CONTROL_AWB_MODE_AUTO) {
+ const uint16_t kAutoWhiteBalance = 0;
+ if (!setWhiteBalance(kAutoWhiteBalance)) {
+ ALOGE("%s: setting white balance failed.", __FUNCTION__);
+ return false;
+ }
+ } else {
+ ALOGE("%s: Unsupported awb mode: %d", __FUNCTION__, entry.data.u8[0]);
+ return false;
+ }
+ }
+
+ if (time_available) {
+ char str[4];
+ if (snprintf(str, sizeof(str), "%03ld", tp.tv_nsec / 1000000) < 0) {
+ ALOGE("%s: Subsec is invalid: %ld", __FUNCTION__, tp.tv_nsec);
+ return false;
+ }
+ if (!setSubsecTime(std::string(str))) {
+ ALOGE("%s: setting subsec time failed.", __FUNCTION__);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+} // namespace helper
+} // namespace common
+} // namespace camera
+} // namespace hardware
+} // namespace android