-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #9 from Ekenstein/FrameDelay
Frame delay
- Loading branch information
Showing
11 changed files
with
335 additions
and
52 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Binary file not shown.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
193 changes: 193 additions & 0 deletions
193
src/main/kotlin/com/github/ekenstein/sgf2gif/GifMetadata.kt
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,193 @@ | ||
| package com.github.ekenstein.sgf2gif | ||
|
|
||
| import java.io.InputStream | ||
| import javax.imageio.ImageIO | ||
| import javax.imageio.metadata.IIOMetadataNode | ||
| import kotlin.time.Duration | ||
| import kotlin.time.Duration.Companion.milliseconds | ||
| import kotlin.time.DurationUnit | ||
|
|
||
| private const val ATTRIBUTE_DELAY_TIME = "delayTime" | ||
| private const val ATTRIBUTE_TRANSPARENT_COLOR_INDEX = "transparentColorIndex" | ||
| private const val ATTRIBUTE_TRANSPARENT_COLOR_FLAG = "transparentColorFlag" | ||
| private const val ATTRIBUTE_USER_INPUT_FLAG = "userInputFlag" | ||
| private const val ATTRIBUTE_DISPOSAL_METHOD = "disposalMethod" | ||
| private const val ATTRIBUTE_APPLICATION_ID = "applicationID" | ||
| private const val ATTRIBUTE_AUTHENTICATION_CODE = "authenticationCode" | ||
| private const val NODE_APPLICATION_EXTENSIONS = "ApplicationExtensions" | ||
| private const val NODE_GRAPHIC_CONTROL_EXTENSION = "GraphicControlExtension" | ||
| private const val NODE_APPLICATION_EXTENSION = "ApplicationExtension" | ||
|
|
||
| class GifMetadata(private val rootNode: IIOMetadataNode) { | ||
| val applicationExtensions: ApplicationExtensions | ||
| get() = ApplicationExtensions(findOrAddNode(NODE_APPLICATION_EXTENSIONS)) | ||
|
|
||
| val graphicControlExtension: GraphicControlExtension | ||
| get() = GraphicControlExtension(findOrAddNode(NODE_GRAPHIC_CONTROL_EXTENSION)) | ||
|
|
||
| fun setLooping() { | ||
| applicationExtensions.addApplicationExtension { | ||
| applicationId = "NETSCAPE" | ||
| authenticationCode = "2.0" | ||
| userObject = byteArrayOf( | ||
| 0x1, | ||
| (0 and 0xFF).toByte(), | ||
| (0 shr 8 and 0xFF).toByte() | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| private fun findOrAddNode(name: String) = getNodes().firstOrNull { it.nodeName.equals(name, true) } | ||
| ?: addNode(name) | ||
|
|
||
| private fun addNode(name: String): IIOMetadataNode { | ||
| val node = IIOMetadataNode(name) | ||
| rootNode.appendChild(node) | ||
| return node | ||
| } | ||
|
|
||
| private fun getNodes() = sequence { | ||
| for (i in 0 until rootNode.length) { | ||
| val item = rootNode.item(i) as IIOMetadataNode | ||
| yield(item) | ||
| } | ||
| } | ||
|
|
||
| companion object { | ||
| fun fromInputStream(inputStream: InputStream): GifMetadata { | ||
| val imageReader = ImageIO.getImageReadersBySuffix("gif").next() | ||
| ?: error("Failed to get an image reader for GIF") | ||
|
|
||
| imageReader.input = ImageIO.createImageInputStream(inputStream) | ||
|
|
||
| val imageMetadata = imageReader.getImageMetadata(0) | ||
| val node = imageMetadata.getAsTree(imageMetadata.nativeMetadataFormatName) as IIOMetadataNode | ||
| return GifMetadata(node) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| class ApplicationExtensions(private val node: IIOMetadataNode) { | ||
| fun addApplicationExtension(block: ApplicationExtension.() -> Unit) { | ||
| val child = IIOMetadataNode(NODE_APPLICATION_EXTENSION) | ||
| ApplicationExtension(child).apply(block) | ||
| node.appendChild(child) | ||
| } | ||
|
|
||
| fun getApplicationExtensions() = node.children.map(::ApplicationExtension) | ||
| } | ||
|
|
||
| class ApplicationExtension(private val node: IIOMetadataNode) { | ||
| var applicationId: String | ||
| get() = node.getAttribute(ATTRIBUTE_APPLICATION_ID) | ||
| set(value) { | ||
| node.setAttribute(ATTRIBUTE_APPLICATION_ID, value) | ||
| } | ||
|
|
||
| var authenticationCode: String | ||
| get() = node.getAttribute(ATTRIBUTE_AUTHENTICATION_CODE) | ||
| set(value) { | ||
| node.setAttribute(ATTRIBUTE_AUTHENTICATION_CODE, value) | ||
| } | ||
|
|
||
| var userObject: ByteArray? | ||
| get() = node.userObject as? ByteArray | ||
| set(value) { | ||
| node.userObject = value | ||
| } | ||
| } | ||
|
|
||
| class GraphicControlExtension(private val node: IIOMetadataNode) { | ||
| /** | ||
| * The time to delay between frames | ||
| */ | ||
| var delayTime: Duration | ||
| get() { | ||
| val stringValue = node.getAttribute(ATTRIBUTE_DELAY_TIME) | ||
| val longValue = stringValue.toLongOrNull() | ||
| ?: 0 | ||
|
|
||
| val milliseconds = longValue * 10 | ||
| return milliseconds.milliseconds | ||
| } | ||
| set(value) { | ||
| val valueInMs = value.toLong(DurationUnit.MILLISECONDS) / 10 | ||
| node.setAttribute(ATTRIBUTE_DELAY_TIME, valueInMs.toString()) | ||
| } | ||
|
|
||
| /** | ||
| * True if the frame should be advanced based on user input | ||
| */ | ||
| var userInputFlag: Boolean | ||
| get() = node.getAttribute(ATTRIBUTE_USER_INPUT_FLAG).toBooleanStrictOrNull() | ||
| ?: false | ||
| set(value) { | ||
| node.setAttribute(ATTRIBUTE_USER_INPUT_FLAG, value.toString().uppercase()) | ||
| } | ||
|
|
||
| /** | ||
| * True if a transparent color exists | ||
| */ | ||
| var transparentColorFlag: Boolean | ||
| get() = node.getAttribute(ATTRIBUTE_TRANSPARENT_COLOR_FLAG).toBooleanStrictOrNull() | ||
| ?: false | ||
| set(value) { | ||
| node.setAttribute(ATTRIBUTE_TRANSPARENT_COLOR_FLAG, value.toString().uppercase()) | ||
| } | ||
|
|
||
| /** | ||
| * The transparent color, if transparentColorFlag is true. | ||
| * Min value: 0 (inclusive) | ||
| * Max value: 255 (inclusive) | ||
| */ | ||
| var transparentColorIndex: Int | ||
| get() = node.getAttribute(ATTRIBUTE_TRANSPARENT_COLOR_INDEX).toIntOrNull() | ||
| ?: 0 | ||
| set(value) { | ||
| node.setAttribute(ATTRIBUTE_TRANSPARENT_COLOR_INDEX, value.toString()) | ||
| } | ||
|
|
||
| /** | ||
| * The disposal method for this frame | ||
| */ | ||
| var disposalMethod: DisposalMethod | ||
| get() { | ||
| val allDisposalMethods = DisposalMethod.entries.associateBy { it.asString } | ||
| val value = node.getAttribute(ATTRIBUTE_DISPOSAL_METHOD) | ||
| return allDisposalMethods[value] | ||
| ?: DisposalMethod.None | ||
| } | ||
| set(value) { | ||
| node.setAttribute(ATTRIBUTE_DISPOSAL_METHOD, value.asString) | ||
| } | ||
| } | ||
|
|
||
| enum class DisposalMethod { | ||
| None, | ||
| DoNotDispose, | ||
| RestoreToBackgroundColor, | ||
| RestoreToPrevious, | ||
| UndefinedDisposalMethod4, | ||
| UndefinedDisposalMethod5, | ||
| UndefinedDisposalMethod6, | ||
| UndefinedDisposalMethod7 | ||
| } | ||
|
|
||
| private val DisposalMethod.asString | ||
| get() = when (this) { | ||
| DisposalMethod.None -> "none" | ||
| DisposalMethod.DoNotDispose -> "doNotDispose" | ||
| DisposalMethod.RestoreToBackgroundColor -> "restoreToBackgroundColor" | ||
| DisposalMethod.RestoreToPrevious -> "restoreToPrevious" | ||
| DisposalMethod.UndefinedDisposalMethod4 -> "undefinedDisposalMethod4" | ||
| DisposalMethod.UndefinedDisposalMethod7 -> "undefinedDisposalMethod7" | ||
| DisposalMethod.UndefinedDisposalMethod5 -> "undefinedDisposalMethod5" | ||
| DisposalMethod.UndefinedDisposalMethod6 -> "undefinedDisposalMethod6" | ||
| } | ||
|
|
||
| private val IIOMetadataNode.children get() = sequence { | ||
| for (i in 0 until childNodes.length) { | ||
| val childNode = childNodes.item(i) as IIOMetadataNode | ||
| yield(childNode) | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| package com.github.ekenstein.sgf2gif | ||
|
|
||
| import java.io.ByteArrayInputStream | ||
| import java.io.InputStream | ||
| import javax.imageio.ImageIO | ||
| import javax.imageio.ImageReader | ||
| import javax.imageio.metadata.IIOMetadataNode | ||
|
|
||
| class GifImage private constructor(private val imageReader: ImageReader) { | ||
| private val imageMetaData by lazy { | ||
| val imageMetadata = imageReader.getImageMetadata(0) | ||
| val node = imageMetadata.getAsTree(imageMetadata.nativeMetadataFormatName) as IIOMetadataNode | ||
| GifMetadata(node) | ||
| } | ||
|
|
||
| val numberOfFrames: Int by lazy { | ||
| imageReader.getNumImages(true) | ||
| } | ||
|
|
||
| companion object { | ||
| fun fromStream(inputStream: InputStream): GifImage { | ||
| val imageReader = ImageIO.getImageReadersBySuffix("gif").next() | ||
| ?: error("Failed to get an image reader for GIF") | ||
|
|
||
| imageReader.input = ImageIO.createImageInputStream(inputStream) | ||
| return GifImage(imageReader) | ||
| } | ||
|
|
||
| fun fromByteArray(bytes: ByteArray) = fromStream(ByteArrayInputStream(bytes)) | ||
| } | ||
| } |
Oops, something went wrong.