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https://github.com/JustinZeus/Wholphin.git
synced 2026-07-08 23:51:21 +02:00
Improve trickplay image preview speed (#467)
Moves the clipping of trickplay images from the image loading layer to the composition/graphics layer. Effectively, this PR loads and renders the entire trickplay image which is then moved around to the right position and finally is clipped so only a single tile is shown. Since moving the image around on screen plsu clipping is 1) very fast and 2) done during recompositions, this means it is _much_ faster at rendering each trickplay tile image and Coil only has to load the image once. Fixes #432
This commit is contained in:
damontecres
GitHub
parent
ff43f8b1b5
commit
7ab39eba57
4 changed files with 77 additions and 50 deletions
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@ -53,6 +53,7 @@ fun ItemDetailsDialog(
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val audioLabel = stringResource(R.string.audio)
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val subtitleLabel = stringResource(R.string.subtitle)
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val bitrateLabel = stringResource(R.string.bitrate)
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val unknown = stringResource(R.string.unknown)
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ScrollableDialog(
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onDismissRequest = onDismissRequest,
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@ -100,6 +101,7 @@ fun ItemDetailsDialog(
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source.container?.let { add(containerLabel to it) }
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if (showFilePath) {
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source.path?.let { add(pathLabel to it) }
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add("ID" to (source.id ?: unknown))
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}
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source.size?.let {
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add(fileSizeLabel to formatBytes(it))
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@ -398,17 +398,13 @@ fun PlaybackOverlay(
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val tilesPerImage = trickplayInfo.tileWidth * trickplayInfo.tileHeight
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val index =
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(seekProgressMs / trickplayInfo.interval).toInt() / tilesPerImage
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val imageUrl = trickplayUrlFor(index)
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val imageUrl = remember(index) { trickplayUrlFor(index) }
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if (imageUrl != null) {
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SeekPreviewImage(
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modifier =
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Modifier,
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modifier = Modifier,
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previewImageUrl = imageUrl,
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duration = playerControls.duration,
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seekProgressMs = seekProgressMs,
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videoWidth = trickplayInfo.width,
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videoHeight = trickplayInfo.height,
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trickPlayInfo = trickplayInfo,
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)
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}
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@ -411,7 +411,11 @@ class PlaybackViewModel
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trickPlayInfo?.let { trickplayInfo ->
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mediaSource.runTimeTicks?.ticks?.let { duration ->
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viewModelScope.launchIO {
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prefetchTrickplay(duration, trickplayInfo)
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prefetchTrickplay(
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duration,
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trickplayInfo,
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mediaSource.id?.toUUIDOrNull(),
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)
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}
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}
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}
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@ -737,16 +741,18 @@ class PlaybackViewModel
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private suspend fun prefetchTrickplay(
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duration: Duration,
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trickplayInfo: TrickplayInfo,
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mediaSourceId: UUID?,
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) {
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val tilesPerImage = trickplayInfo.tileWidth * trickplayInfo.tileHeight
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val totalCount =
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(duration.inWholeMilliseconds / trickplayInfo.interval).toInt() / tilesPerImage + 1
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(0..<totalCount).forEach {
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val url = getTrickplayUrl(it, trickplayInfo)
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val url = getTrickplayUrl(it, trickplayInfo, mediaSourceId)
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context.imageLoader.enqueue(
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ImageRequest
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.Builder(context)
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.data(url)
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.size(coil3.size.Size.ORIGINAL)
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.build(),
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)
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}
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@ -755,10 +761,10 @@ class PlaybackViewModel
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fun getTrickplayUrl(
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index: Int,
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trickPlayInfo: TrickplayInfo? = currentMediaInfo.value?.trickPlayInfo,
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mediaSourceId: UUID? = currentItemPlayback.value?.sourceId,
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): String? =
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trickPlayInfo?.let {
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val itemId = item.id
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val mediaSourceId = currentItemPlayback.value?.sourceId
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return api.trickplayApi.getTrickplayTileImageUrl(
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itemId,
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trickPlayInfo.width,
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@ -1,23 +1,29 @@
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package com.github.damontecres.wholphin.ui.playback
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import androidx.compose.foundation.Canvas
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import androidx.compose.foundation.background
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import androidx.compose.foundation.border
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import androidx.compose.foundation.layout.Box
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import androidx.compose.foundation.layout.height
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import androidx.compose.foundation.layout.width
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.remember
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.draw.clip
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import androidx.compose.ui.geometry.Offset
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import androidx.compose.ui.geometry.Size
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import androidx.compose.ui.graphics.Color
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import androidx.compose.ui.graphics.painter.Painter
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import androidx.compose.ui.graphics.RectangleShape
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import androidx.compose.ui.graphics.drawscope.scale
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import androidx.compose.ui.graphics.drawscope.translate
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import androidx.compose.ui.layout.ContentScale
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import androidx.compose.ui.layout.layout
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import androidx.compose.ui.platform.LocalContext
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import androidx.compose.ui.platform.LocalDensity
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import androidx.compose.ui.unit.dp
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import androidx.tv.material3.MaterialTheme
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import coil3.compose.AsyncImage
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import coil3.compose.rememberAsyncImagePainter
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import coil3.request.ImageRequest
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import coil3.request.transformations
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import com.github.damontecres.wholphin.ui.CoilTrickplayTransformation
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import com.github.damontecres.wholphin.ui.isNotNullOrBlank
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import org.jellyfin.sdk.model.api.TrickplayInfo
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@ -69,53 +75,70 @@ fun Modifier.offsetByPercent(xPercentage: Float) =
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@Composable
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fun SeekPreviewImage(
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previewImageUrl: String,
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duration: Long,
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seekProgressMs: Long,
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videoWidth: Int?,
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videoHeight: Int?,
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trickPlayInfo: TrickplayInfo,
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modifier: Modifier = Modifier,
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placeHolder: Painter? = null,
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) {
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val context = LocalContext.current
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if (previewImageUrl.isNotNullOrBlank() &&
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videoWidth != null &&
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videoHeight != null
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) {
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if (previewImageUrl.isNotNullOrBlank()) {
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val height = 160.dp
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val width = height * (videoWidth.toFloat() / videoHeight)
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val heightPx = with(LocalDensity.current) { height.toPx().toInt() }
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val widthPx = with(LocalDensity.current) { width.toPx().toInt() }
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val width = height * (trickPlayInfo.width.toFloat() / trickPlayInfo.height)
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val scale = LocalDensity.current.density
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val index = (seekProgressMs.toDouble() / trickPlayInfo.interval).toInt() // Which tile
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val numberOfTitlesPerImage = trickPlayInfo.tileHeight * trickPlayInfo.tileWidth
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val imageIndex = index % numberOfTitlesPerImage
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AsyncImage(
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modifier =
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modifier
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.width(width)
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.height(height)
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.background(Color.Black)
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.border(1.5.dp, color = MaterialTheme.colorScheme.border),
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model =
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val model =
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remember(previewImageUrl) {
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ImageRequest
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.Builder(context)
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.data(previewImageUrl)
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.transformations(
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CoilTrickplayTransformation(
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widthPx,
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heightPx,
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trickPlayInfo.tileHeight,
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trickPlayInfo.tileWidth,
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imageIndex,
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index,
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),
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).build(),
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contentScale = ContentScale.None,
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contentDescription = null,
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placeholder = placeHolder,
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)
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.size(coil3.size.Size.ORIGINAL)
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.build()
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}
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val painter =
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rememberAsyncImagePainter(
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model = model,
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contentScale = ContentScale.None,
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)
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val index =
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(seekProgressMs.toDouble() / trickPlayInfo.interval).toInt() // Index of tile across images
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val numberOfTilesPerImage = trickPlayInfo.tileHeight * trickPlayInfo.tileWidth
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val tileIndex =
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index % numberOfTilesPerImage // Index of tile within the current image
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val x = (tileIndex % trickPlayInfo.tileWidth) // x position within tile grid
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val y = (tileIndex / trickPlayInfo.tileHeight) // y position
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Box(
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modifier =
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modifier
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.border(1.5.dp, color = MaterialTheme.colorScheme.border)
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.background(Color.Black)
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.height(height)
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.width(width),
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) {
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Canvas(
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modifier =
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Modifier
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.height(height)
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.width(width)
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.clip(RectangleShape),
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) {
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with(painter) {
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// Scale and translate to the right position in the tile grid
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scale(scale, scale, pivot = Offset.Zero) {
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translate(
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left = -x.toFloat() * trickPlayInfo.width,
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top = -y.toFloat() * trickPlayInfo.height,
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) {
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draw(
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size =
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Size(
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trickPlayInfo.width * trickPlayInfo.tileWidth.toFloat(),
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trickPlayInfo.height * trickPlayInfo.tileHeight.toFloat(),
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),
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)
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}
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}
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}
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}
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}
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}
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}
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