Mastodon
/
SubwayTooter-Android-App
mirror of https://github.com/tateisu/SubwayTooter
1
0
Fork 0
Code Issues Releases Wiki Activity

Bitmapの最大サイズを調べるコードを二分探索にする

This commit is contained in:
tateisu 2023-07-19 15:24:24 +09:00
parent f2b5af163d
commit d1a9a3c5f6
1 changed files with 34 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
app/src/main/java/jp/juggler/subwaytooter/ActMediaViewer.kt
View File

@ -5,10 +5,8 @@ import android.app.DownloadManager
import android.content.ClipData
import android.content.ClipDescription
import android.content.ClipboardManager
import android.content.Context
import android.content.Intent
import android.graphics.*
import android.opengl.GLES10
import android.os.Build
import android.os.Bundle
import android.os.Environment
@ -58,9 +56,9 @@ import java.io.ByteArrayInputStream
import java.io.IOException
import java.nio.charset.StandardCharsets
import java.util.*
import javax.microedition.khronos.opengles.GL10
import javax.net.ssl.HttpsURLConnection
import kotlin.math.max
import kotlin.math.min
@androidx.annotation.OptIn(markerClass = [androidx.media3.common.util.UnstableApi::class])
class ActMediaViewer : AppCompatActivity(), View.OnClickListener {
@ -108,25 +106,39 @@ class ActMediaViewer : AppCompatActivity(), View.OnClickListener {
activity.overridePendingTransition(R.anim.slide_from_bottom, android.R.anim.fade_out)
}
private fun Context.getMaxTextureSize(): Int {
try {
val tmpIntArray = IntArray(1)
GLES10.glGetIntegerv(GL10.GL_MAX_TEXTURE_SIZE, tmpIntArray, 0)
val maxTextureSize = tmpIntArray.first()
if (maxTextureSize !in 1024..65536) {
error("GL_MAX_TEXTURE_SIZE returns $maxTextureSize")
private fun checkMaxBitmapSize(): Int {
var bitsMin = 10
var bitsMax = 16
while (bitsMax > bitsMin) {
val bitsMid = (bitsMin + bitsMax + 1).shr(1)
val px = 1.shl(bitsMid)
val canCreate = try {
val bitmap = Bitmap.createBitmap(px, px, Bitmap.Config.ARGB_8888)
?: error("createBitmap returns null")
bitmap.recycle()
log.i("checkMaxBitmapSize: range=$bitsMin..$bitsMid..$bitsMax, px=${px}, canCreate=true")
true
} catch (ex: Throwable) {
log.i(ex.withCaption("checkMaxBitmapSize: range=$bitsMin..$bitsMid..$bitsMax, px=${px}, canCreate=false"))
false
}
when {
!canCreate ->
bitsMax = bitsMid - 1
bitsMin < bitsMid ->
bitsMin = bitsMid
else -> break
}
return maxTextureSize
} catch (ex: Throwable) {
log.e(ex, "can't get GL_MAX_TEXTURE_SIZE")
}
val dm = resources.displayMetrics
val pixels = max(dm.widthPixels, dm.heightPixels)
return if (pixels <= 2048) {
2048
} else {
4096
}
val resolved = 1.shl(bitsMin)
log.w("checkMaxBitmapSize: resolved=$resolved")
return min(8192, resolved)
}
private val maxBitmapSize by lazy {
checkMaxBitmapSize()
}
}
@ -401,7 +413,7 @@ class ActMediaViewer : AppCompatActivity(), View.OnClickListener {
setRepeatToggleModes(RepeatModeUtil.REPEAT_TOGGLE_MODE_ONE)
}
views.wvOther.apply{
views.wvOther.apply {
scrollBarStyle = View.SCROLLBARS_INSIDE_OVERLAY
settings.apply {
@SuppressLint("SetJavaScriptEnabled")
@ -521,7 +533,7 @@ class ActMediaViewer : AppCompatActivity(), View.OnClickListener {
private fun decodeBitmap(
options: BitmapFactory.Options,
data: ByteArray,
@Suppress("SameParameterValue") pixelMax: Int = getMaxTextureSize(),
@Suppress("SameParameterValue") pixelMax: Int = maxBitmapSize,
): Pair<Bitmap?, String?> {
val orientation: Int? = ByteArrayInputStream(data).imageOrientation()