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Main.kt
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Main.kt
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import com.ashampoo.kim.Kim
import com.ashampoo.kim.common.writeBytes
import com.ashampoo.kim.format.jpeg.JpegRewriter
import com.ashampoo.kim.format.tiff.TiffContents
import com.ashampoo.kim.format.tiff.TiffReader
import com.ashampoo.kim.format.tiff.constant.ExifTag
import com.ashampoo.kim.format.tiff.constant.GeoTiffTag
import com.ashampoo.kim.format.tiff.write.TiffOutputSet
import com.ashampoo.kim.format.tiff.write.TiffWriterLossy
import com.ashampoo.kim.input.DefaultRandomAccessByteReader
import com.ashampoo.kim.input.JvmInputStreamByteReader
import com.ashampoo.kim.input.KotlinIoSourceByteReader
import com.ashampoo.kim.input.use
import com.ashampoo.kim.jvm.readMetadata
import com.ashampoo.kim.kotlinx.KimKotlinx
import com.ashampoo.kim.model.MetadataUpdate
import com.ashampoo.kim.output.ByteArrayByteWriter
import com.ashampoo.kim.output.OutputStreamByteWriter
import java.io.File
fun main() {
printMetadata()
updateTakenDate()
updateTakenDateLowLevelApi()
/* Various GeoTiff samples */
setGeoTiffToJpeg()
setGeoTiffToTiff()
setGeoTiffToTiffUsingKotlinx()
}
fun printMetadata() {
val inputFile = File("testphoto.jpg")
val imageMetadata = Kim.readMetadata(inputFile)
println(imageMetadata)
}
/**
* Shows how to update the taken date using Kim.update() API
*/
fun updateTakenDate() {
val update = MetadataUpdate.TakenDate(System.currentTimeMillis())
val inputFile = File("testphoto.jpg")
val outputFile = File("testphoto_mod1.jpg")
JvmInputStreamByteReader(inputFile.inputStream(), inputFile.length()).use { byteReader ->
OutputStreamByteWriter(outputFile.outputStream()).use { byteWriter ->
Kim.update(byteReader, byteWriter, update)
}
}
}
/**
* Shows how to update the taken date using the low level API.
*/
fun updateTakenDateLowLevelApi() {
val inputFile = File("testphoto.jpg")
val outputFile = File("testphoto_mod2.jpg")
val metadata = Kim.readMetadata(inputFile) ?: return
val outputSet: TiffOutputSet = metadata.exif?.createOutputSet() ?: TiffOutputSet()
val exifDirectory = outputSet.getOrCreateExifDirectory()
exifDirectory.removeField(ExifTag.EXIF_TAG_DATE_TIME_ORIGINAL)
exifDirectory.add(ExifTag.EXIF_TAG_DATE_TIME_ORIGINAL, "2222:02:02 13:37:42")
OutputStreamByteWriter(outputFile.outputStream()).use { outputStreamByteWriter ->
JpegRewriter.updateExifMetadataLossless(
byteReader = JvmInputStreamByteReader(inputFile.inputStream(), inputFile.length()),
byteWriter = outputStreamByteWriter,
outputSet = outputSet
)
}
}
fun setGeoTiffToJpeg() {
val inputFile = File("testphoto.jpg")
val outputFile = File("testphoto_mod3.jpg")
val metadata = Kim.readMetadata(inputFile) ?: return
val outputSet: TiffOutputSet = metadata.exif?.createOutputSet() ?: TiffOutputSet()
val rootDirectory = outputSet.getOrCreateRootDirectory()
rootDirectory.add(
GeoTiffTag.EXIF_TAG_MODEL_PIXEL_SCALE_TAG,
doubleArrayOf(0.0002303616678184751, -0.0001521606816798535, 0.0)
)
rootDirectory.add(
GeoTiffTag.EXIF_TAG_MODEL_TIEPOINT_TAG,
doubleArrayOf(0.0, 0.0, 0.0, 8.915687629578438, 48.92432542097789, 0.0)
)
rootDirectory.add(
GeoTiffTag.EXIF_TAG_GEO_KEY_DIRECTORY_TAG,
shortArrayOf(1, 0, 2, 3, 1024, 0, 1, 2, 2048, 0, 1, 4326, 1025, 0, 1, 2)
)
OutputStreamByteWriter(outputFile.outputStream()).use { outputStreamByteWriter ->
JpegRewriter.updateExifMetadataLossless(
byteReader = JvmInputStreamByteReader(inputFile.inputStream(), inputFile.length()),
byteWriter = outputStreamByteWriter,
outputSet = outputSet
)
}
}
/**
* Shows how to update set GeoTiff to a TIF file using JVM API.
*/
fun setGeoTiffToTiff() {
val inputFile = File("empty.tif")
val outputFile = File("geotiff.tif")
val tiffContents: TiffContents =
JvmInputStreamByteReader(inputFile.inputStream(), inputFile.length()).use { byteReader ->
byteReader.let {
TiffReader.read(
/*
* TIFF files can be extremely large.
* It is not advisable to load them entirely into a ByteArray.
*/
byteReader = DefaultRandomAccessByteReader(byteReader),
/*
* Per default the strip bytes are not read.
* For GeoTiff writing to a TIFF this needs to be turned on.
*/
readTiffImageBytes = true
)
}
}
val outputSet: TiffOutputSet = tiffContents.createOutputSet()
val rootDirectory = outputSet.getOrCreateRootDirectory()
rootDirectory.add(
GeoTiffTag.EXIF_TAG_MODEL_PIXEL_SCALE_TAG,
doubleArrayOf(0.0002303616678184751, -0.0001521606816798535, 0.0)
)
rootDirectory.add(
GeoTiffTag.EXIF_TAG_MODEL_TIEPOINT_TAG,
doubleArrayOf(0.0, 0.0, 0.0, 8.915687629578438, 48.92432542097789, 0.0)
)
rootDirectory.add(
GeoTiffTag.EXIF_TAG_GEO_KEY_DIRECTORY_TAG,
shortArrayOf(1, 0, 2, 3, 1024, 0, 1, 2, 2048, 0, 1, 4326, 1025, 0, 1, 2)
)
OutputStreamByteWriter(outputFile.outputStream()).use { outputStreamByteWriter ->
val tiffWriter = TiffWriterLossy(outputSet.byteOrder)
tiffWriter.write(
byteWriter = outputStreamByteWriter,
outputSet = outputSet
)
}
}
/**
* Shows how to update set GeoTiff to a TIF file using kotlinx-io.
*/
fun setGeoTiffToTiffUsingKotlinx() {
val inputPath = kotlinx.io.files.Path("empty.tif")
val outputPath = kotlinx.io.files.Path("geotiff_kotlinx.tif")
val tiffContents: TiffContents? =
KotlinIoSourceByteReader.read(inputPath) { byteReader ->
byteReader?.let {
TiffReader.read(
/*
* TIFF files can be extremely large.
* It is not advisable to load them entirely into a ByteArray.
*/
byteReader = DefaultRandomAccessByteReader(byteReader),
/*
* Per default the strip bytes are not read.
* For GeoTiff writing to a TIFF this needs to be turned on.
*/
readTiffImageBytes = true
)
}
}
val outputSet: TiffOutputSet = tiffContents?.createOutputSet() ?: TiffOutputSet()
val rootDirectory = outputSet.getOrCreateRootDirectory()
rootDirectory.add(
GeoTiffTag.EXIF_TAG_MODEL_PIXEL_SCALE_TAG,
doubleArrayOf(0.0002303616678184751, -0.0001521606816798535, 0.0)
)
rootDirectory.add(
GeoTiffTag.EXIF_TAG_MODEL_TIEPOINT_TAG,
doubleArrayOf(0.0, 0.0, 0.0, 8.915687629578438, 48.92432542097789, 0.0)
)
rootDirectory.add(
GeoTiffTag.EXIF_TAG_GEO_KEY_DIRECTORY_TAG,
shortArrayOf(1, 0, 2, 3, 1024, 0, 1, 2, 2048, 0, 1, 4326, 1025, 0, 1, 2)
)
val byteArrayByteWriter = ByteArrayByteWriter()
val tiffWriter = TiffWriterLossy(outputSet.byteOrder)
tiffWriter.write(
byteWriter = byteArrayByteWriter,
outputSet = outputSet
)
val updatedBytes = byteArrayByteWriter.toByteArray()
outputPath.writeBytes(updatedBytes)
}