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package org.jetbrains.skia
import org.jetbrains.skia.impl.Library.Companion.staticLoad
import org.jetbrains.skia.impl.Managed
import org.jetbrains.skia.impl.Stats
import org.jetbrains.skia.impl.reachabilityBarrier
import org.jetbrains.skia.impl.NativePointer
import org.jetbrains.skia.impl.getPtr
class Codec internal constructor(ptr: NativePointer) : Managed(ptr, _FinalizerHolder.PTR), IHasImageInfo {
companion object {
/**
* If this data represents an encoded image that we know how to decode,
* return an Codec that can decode it. Otherwise throws IllegalArgumentException.
*/
fun makeFromData(data: Data?): Codec {
return try {
Stats.onNativeCall()
val ptr =
_nMakeFromData(getPtr(data))
require(ptr != NullPointer) { "Unsupported format" }
Codec(ptr)
} finally {
reachabilityBarrier(data)
}
}
internal fun _validateResult(result: Int) {
when (result) {
1 -> throw IllegalArgumentException("Incomplete input: A partial image was generated.")
2 -> throw IllegalArgumentException("Error in input")
3 -> throw IllegalArgumentException("Invalid conversion: The generator cannot convert to match the request, ignoring dimensions")
4 -> throw IllegalArgumentException("Invalid scale: The generator cannot scale to requested size")
5 -> throw IllegalArgumentException("Invalid parameter: Parameters (besides info) are invalid. e.g. NULL pixels, rowBytes too small, etc")
6 -> throw IllegalArgumentException("Invalid input: The input did not contain a valid image")
7 -> throw UnsupportedOperationException("Could not rewind: Fulfilling this request requires rewinding the input, which is not supported for this input")
8 -> throw RuntimeException("Internal error")
9 -> throw UnsupportedOperationException("Unimplemented: This method is not implemented by this codec")
}
}
init {
staticLoad()
}
}
internal var _imageInfo: ImageInfo? = null
override val imageInfo: ImageInfo
get() = try {
if (_imageInfo == null) {
Stats.onNativeCall()
_imageInfo = Codec_nGetImageInfo(_ptr)
}
_imageInfo!!
} finally {
reachabilityBarrier(this)
}
val size: IPoint
get() = try {
Stats.onNativeCall()
toIPoint(_nGetSize(_ptr))
} finally {
reachabilityBarrier(this)
}
val encodedOrigin: EncodedOrigin
get() = try {
Stats.onNativeCall()
EncodedOrigin.values().get(_nGetEncodedOrigin(_ptr))
} finally {
reachabilityBarrier(this)
}
val encodedImageFormat: EncodedImageFormat
get() = try {
Stats.onNativeCall()
EncodedImageFormat.values().get(_nGetEncodedImageFormat(_ptr))
} finally {
reachabilityBarrier(this)
}
/**
*
* Decodes an image into a bitmap.
*
* @return decoded bitmap
*/
fun readPixels(): Bitmap {
val bitmap = Bitmap()
bitmap.allocPixels(imageInfo)
readPixels(bitmap)
return bitmap
}
/**
*
* Decodes an image into a bitmap.
*
*
* Repeated calls to this function should give the same results,
* allowing the PixelRef to be immutable.
*
*
* Bitmap specifies the description of the format (config, size)
* expected by the caller. This can simply be identical
* to the info returned by getImageInfo().
*
*
* This contract also allows the caller to specify
* different output-configs, which the implementation can
* decide to support or not.
*
*
* A size that does not match getImageInfo() implies a request
* to scale. If the generator cannot perform this scale,
* it will throw an exception.
*
*
* If the info contains a non-null ColorSpace, the codec
* will perform the appropriate color space transformation.
*
*
* If the caller passes in the ColorSpace that maps to the
* ICC profile reported by getICCProfile(), the color space
* transformation is a no-op.
*
*
* If the caller passes a null SkColorSpace, no color space
* transformation will be done.
*
* @param bitmap the description of the format (config, size) expected by the caller
* @return this
*/
fun readPixels(bitmap: Bitmap?): Codec {
return try {
Stats.onNativeCall()
_validateResult(
Codec_nReadPixels(
_ptr,
getPtr(bitmap),
0,
-1
)
)
this
} finally {
reachabilityBarrier(bitmap)
}
}
/**
*
* Decodes a frame in a multi-frame image into a bitmap.
*
*
* Repeated calls to this function should give the same results,
* allowing the PixelRef to be immutable.
*
*
* Bitmap specifies the description of the format (config, size)
* expected by the caller. This can simply be identical
* to the info returned by getImageInfo().
*
*
* This contract also allows the caller to specify
* different output-configs, which the implementation can
* decide to support or not.
*
*
* A size that does not match getImageInfo() implies a request
* to scale. If the generator cannot perform this scale,
* it will throw an exception.
*
*
* If the info contains a non-null ColorSpace, the codec
* will perform the appropriate color space transformation.
*
*
* If the caller passes in the ColorSpace that maps to the
* ICC profile reported by getICCProfile(), the color space
* transformation is a no-op.
*
*
* If the caller passes a null SkColorSpace, no color space
* transformation will be done.
*
* @param bitmap the description of the format (config, size) expected by the caller
* @param frame index of the frame in multi-frame image to decode
* @return this
*/
fun readPixels(bitmap: Bitmap?, frame: Int): Codec {
return try {
Stats.onNativeCall()
_validateResult(
Codec_nReadPixels(
_ptr,
getPtr(bitmap),
frame,
-1
)
)
this
} finally {
reachabilityBarrier(bitmap)
}
}
/**
*
* Decodes a frame in a multi-frame image into a bitmap.
*
*
* Repeated calls to this function should give the same results,
* allowing the PixelRef to be immutable.
*
*
* Bitmap specifies the description of the format (config, size)
* expected by the caller. This can simply be identical
* to the info returned by getImageInfo().
*
*
* This contract also allows the caller to specify
* different output-configs, which the implementation can
* decide to support or not.
*
*
* A size that does not match getImageInfo() implies a request
* to scale. If the generator cannot perform this scale,
* it will throw an exception.
*
*
* If the info contains a non-null ColorSpace, the codec
* will perform the appropriate color space transformation.
*
*
* If the caller passes in the ColorSpace that maps to the
* ICC profile reported by getICCProfile(), the color space
* transformation is a no-op.
*
*
* If the caller passes a null SkColorSpace, no color space
* transformation will be done.
*
* @param bitmap the description of the format (config, size) expected by the caller
* @param frame index of the frame in multi-frame image to decode
* @param priorFrame index of the frame already in bitmap, might be used to optimize retrieving current frame
* @return this
*/
fun readPixels(bitmap: Bitmap?, frame: Int, priorFrame: Int): Codec {
return try {
Stats.onNativeCall()
_validateResult(
Codec_nReadPixels(
_ptr,
getPtr(bitmap),
frame,
priorFrame
)
)
this
} finally {
reachabilityBarrier(bitmap)
}
}
/**
*
* Return the number of frames in the image.
*
*
* May require reading through the stream.
*/
val frameCount: Int
get() = try {
Stats.onNativeCall()
_nGetFrameCount(_ptr)
} finally {
reachabilityBarrier(this)
}
/**
*
* Return info about a single frame.
*
*
* Only supported by multi-frame images. Does not read through the stream,
* so it should be called after getFrameCount() to parse any frames that
* have not already been parsed.
*/
fun getFrameInfo(frame: Int): AnimationFrameInfo {
return try {
Stats.onNativeCall()
_nGetFrameInfo(_ptr, frame)
} finally {
reachabilityBarrier(this)
}
}
/**
*
* Return info about all the frames in the image.
*
*
* May require reading through the stream to determine info about the
* frames (including the count).
*
*
* As such, future decoding calls may require a rewind.
*
*
* For still (non-animated) image codecs, this will return an empty array.
*/
val framesInfo: Array
get() = try {
Stats.onNativeCall()
_nGetFramesInfo(_ptr)
} finally {
reachabilityBarrier(this)
}
/**
*
* Return the number of times to repeat, if this image is animated. This number does not
* include the first play through of each frame. For example, a repetition count of 4 means
* that each frame is played 5 times and then the animation stops.
*
*
* It can return -1, a negative number, meaning that the animation
* should loop forever.
*
*
* May require reading the stream to find the repetition count.
*
*
* As such, future decoding calls may require a rewind.
*
*
* For still (non-animated) image codecs, this will return 0.
*/
val repetitionCount: Int
get() = try {
Stats.onNativeCall()
_nGetRepetitionCount(_ptr)
} finally {
reachabilityBarrier(this)
}
internal object _FinalizerHolder {
val PTR = Codec_nGetFinalizer()
}
}
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetFinalizer")
private external fun Codec_nGetFinalizer(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetImageInfo")
private external fun Codec_nGetImageInfo(ptr: NativePointer): ImageInfo?
@ExternalSymbolName("org_jetbrains_skia_Codec__1nReadPixels")
private external fun Codec_nReadPixels(ptr: NativePointer, bitmapPtr: NativePointer, frame: Int, priorFrame: Int): Int
@ExternalSymbolName("org_jetbrains_skia_Codec__1nMakeFromData")
private external fun _nMakeFromData(dataPtr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetSize")
private external fun _nGetSize(ptr: NativePointer): Long
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetEncodedOrigin")
private external fun _nGetEncodedOrigin(ptr: NativePointer): Int
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetEncodedImageFormat")
private external fun _nGetEncodedImageFormat(ptr: NativePointer): Int
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetFrameCount")
private external fun _nGetFrameCount(ptr: NativePointer): Int
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetFrameInfo")
private external fun _nGetFrameInfo(ptr: NativePointer, frame: Int): AnimationFrameInfo
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetFramesInfo")
private external fun _nGetFramesInfo(ptr: NativePointer): Array
@ExternalSymbolName("org_jetbrains_skia_Codec__1nGetRepetitionCount")
private external fun _nGetRepetitionCount(ptr: NativePointer): Int
