Camera: Add HEIC support
- Derive HEIC capabilities from camera HAL and media framework.
- Add HeicCompositeStream to encode camera buffers to HEIC buffers.
- Add ExifUtils to overwrite JPEG APP segments and send to media codec.
- Add NDK enums and corresponding format support.
Test: Camera CTS
Bug: 79465976
Change-Id: I0a885e76335f3eba4be0fd42241edb0b7349f284
diff --git a/services/camera/libcameraservice/utils/ExifUtils.cpp b/services/camera/libcameraservice/utils/ExifUtils.cpp
new file mode 100644
index 0000000..a4027cc
--- /dev/null
+++ b/services/camera/libcameraservice/utils/ExifUtils.cpp
@@ -0,0 +1,1046 @@
+/*
+ * Copyright (C) 2019 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 "CameraServerExifUtils"
+#define ATRACE_TAG ATRACE_TAG_CAMERA
+//#define LOG_NDEBUG 0
+
+#include <cutils/log.h>
+
+#include <inttypes.h>
+#include <math.h>
+#include <stdint.h>
+#include <string>
+#include <vector>
+
+#include "ExifUtils.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 camera3 {
+
+
+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(const unsigned char *app1Segment, size_t app1SegmentSize);
+
+ // 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();
+
+ // 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(const unsigned char *app1Segment, size_t app1SegmentSize) {
+ reset();
+ exif_data_ = exif_data_new_from_data(app1Segment, app1SegmentSize);
+ 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_LONG(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_LONG(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() {
+ destroyApp1();
+ // 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 camera3
+} // namespace android