Fabio/aves
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1

decode TIFF thumbnails via Glide module

Browse source
This commit is contained in:
Thibault Deckers 2020-12-11 19:25:14 +09:00
parent 9e13fdeea7
commit daa30b3e0c
3 changed files with 96 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/ThumbnailFetcher.kt
View file

@ -13,6 +13,7 @@ import com.bumptech.glide.load.DecodeFormat
import com.bumptech.glide.load.engine.DiskCacheStrategy
import com.bumptech.glide.request.RequestOptions
import com.bumptech.glide.signature.ObjectKey
import deckers.thibault.aves.decoder.TiffThumbnail
import deckers.thibault.aves.decoder.VideoThumbnail
import deckers.thibault.aves.utils.BitmapUtils.applyExifOrientation
import deckers.thibault.aves.utils.BitmapUtils.getBytes
@ -21,7 +22,6 @@ import deckers.thibault.aves.utils.MimeTypes.isVideo
import deckers.thibault.aves.utils.MimeTypes.needRotationAfterContentResolverThumbnail
import deckers.thibault.aves.utils.MimeTypes.needRotationAfterGlide
import io.flutter.plugin.common.MethodChannel
import org.beyka.tiffbitmapfactory.TiffBitmapFactory
class ThumbnailFetcher internal constructor(
private val context: Context,
@ -45,9 +45,7 @@ class ThumbnailFetcher internal constructor(
var exception: Exception? = null
try {
if (mimeType == MimeTypes.TIFF) {
bitmap = getTiff()
} else if ((width == defaultSize || height == defaultSize) && !isFlipped) {
if (mimeType != MimeTypes.TIFF && (width == defaultSize || height == defaultSize) && !isFlipped) {
// Fetch low quality thumbnails when size is not specified.
// As of Android R, the Media Store content resolver may return a thumbnail
// that is automatically rotated according to EXIF orientation, but not flipped,
@ -121,10 +119,11 @@ class ThumbnailFetcher internal constructor(
.load(VideoThumbnail(context, uri))
.submit(width, height)
} else {
val model: Any = if (mimeType == MimeTypes.TIFF) TiffThumbnail(context, uri) else uri
Glide.with(context)
.asBitmap()
.apply(options)
.load(uri)
.load(model)
.submit(width, height)
}
@ -138,31 +137,4 @@ class ThumbnailFetcher internal constructor(
Glide.with(context).clear(target)
}
}
private fun getTiff(): Bitmap? {
// determine sample size
var sampleSize = 1
context.contentResolver.openFileDescriptor(uri, "r")?.use { descriptor ->
val options = TiffBitmapFactory.Options().apply {
inJustDecodeBounds = true
}
TiffBitmapFactory.decodeFileDescriptor(descriptor.fd, options)
val imageWidth = options.outWidth
val imageHeight = options.outHeight
if (imageHeight > height || imageWidth > width) {
while (imageHeight / (sampleSize * 2) > height && imageWidth / (sampleSize * 2) > width) {
sampleSize *= 2
}
}
}
// decode
return context.contentResolver.openFileDescriptor(uri, "r")?.use { descriptor ->
val options = TiffBitmapFactory.Options().apply {
inJustDecodeBounds = false
inSampleSize = sampleSize
}
return TiffBitmapFactory.decodeFileDescriptor(descriptor.fd, options)
}
}
}

91
android/app/src/main/kotlin/deckers/thibault/aves/decoder/TiffThumbnailGlideModule.kt Normal file
View file

@ -0,0 +1,91 @@
package deckers.thibault.aves.decoder
import android.content.Context
import android.net.Uri
import com.bumptech.glide.Glide
import com.bumptech.glide.Priority
import com.bumptech.glide.Registry
import com.bumptech.glide.annotation.GlideModule
import com.bumptech.glide.load.DataSource
import com.bumptech.glide.load.Options
import com.bumptech.glide.load.data.DataFetcher
import com.bumptech.glide.load.data.DataFetcher.DataCallback
import com.bumptech.glide.load.model.ModelLoader
import com.bumptech.glide.load.model.ModelLoaderFactory
import com.bumptech.glide.load.model.MultiModelLoaderFactory
import com.bumptech.glide.module.LibraryGlideModule
import com.bumptech.glide.signature.ObjectKey
import deckers.thibault.aves.utils.BitmapUtils.getBytes
import org.beyka.tiffbitmapfactory.TiffBitmapFactory
import java.io.InputStream
@GlideModule
class TiffThumbnailGlideModule : LibraryGlideModule() {
override fun registerComponents(context: Context, glide: Glide, registry: Registry) {
registry.append(TiffThumbnail::class.java, InputStream::class.java, TiffThumbnailLoader.Factory())
}
}
class TiffThumbnail(val context: Context, val uri: Uri)
internal class TiffThumbnailLoader : ModelLoader<TiffThumbnail, InputStream> {
override fun buildLoadData(model: TiffThumbnail, width: Int, height: Int, options: Options): ModelLoader.LoadData<InputStream> {
return ModelLoader.LoadData(ObjectKey(model.uri), TiffThumbnailFetcher(model, width, height))
}
override fun handles(tiffThumbnail: TiffThumbnail): Boolean = true
internal class Factory : ModelLoaderFactory<TiffThumbnail, InputStream> {
override fun build(multiFactory: MultiModelLoaderFactory): ModelLoader<TiffThumbnail, InputStream> = TiffThumbnailLoader()
override fun teardown() {}
}
}
internal class TiffThumbnailFetcher(val model: TiffThumbnail, val width: Int, val height: Int) : DataFetcher<InputStream> {
override fun loadData(priority: Priority, callback: DataCallback<in InputStream>) {
val context = model.context
val uri = model.uri
// determine sample size
var sampleSize = 1
context.contentResolver.openFileDescriptor(uri, "r")?.use { descriptor ->
val options = TiffBitmapFactory.Options().apply {
inJustDecodeBounds = true
}
TiffBitmapFactory.decodeFileDescriptor(descriptor.fd, options)
val imageWidth = options.outWidth
val imageHeight = options.outHeight
if (imageHeight > height || imageWidth > width) {
while (imageHeight / (sampleSize * 2) > height && imageWidth / (sampleSize * 2) > width) {
sampleSize *= 2
}
}
}
// decode
val bitmap = context.contentResolver.openFileDescriptor(uri, "r")?.use { descriptor ->
val options = TiffBitmapFactory.Options().apply {
inJustDecodeBounds = false
inSampleSize = sampleSize
}
TiffBitmapFactory.decodeFileDescriptor(descriptor.fd, options)
}
if (bitmap == null) {
callback.onLoadFailed(Exception("null bitmap"))
} else {
callback.onDataReady(bitmap.getBytes().inputStream())
}
}
// already cleaned up in loadData and ByteArrayInputStream will be GC'd
override fun cleanup() {}
// cannot cancel
override fun cancel() {}
override fun getDataClass(): Class<InputStream> = InputStream::class.java
override fun getDataSource(): DataSource = DataSource.LOCAL
}

2
android/app/src/main/kotlin/deckers/thibault/aves/decoder/VideoThumbnailGlideModule.kt
View file

@ -30,7 +30,7 @@ class VideoThumbnailGlideModule : LibraryGlideModule() {
class VideoThumbnail(val context: Context, val uri: Uri)
internal class VideoThumbnailLoader : ModelLoader<VideoThumbnail, InputStream> {
override fun buildLoadData(model: VideoThumbnail, width: Int, height: Int, options: Options): ModelLoader.LoadData<InputStream>? {
override fun buildLoadData(model: VideoThumbnail, width: Int, height: Int, options: Options): ModelLoader.LoadData<InputStream> {
return ModelLoader.LoadData(ObjectKey(model.uri), VideoThumbnailFetcher(model))
}