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tev slight optimisation

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minjaesong
2025-09-09 09:47:56 +09:00
parent cf1ee80aa1
commit 3495dfca5e
3 changed files with 22 additions and 30 deletions
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31
tsvm_core/src/net/torvald/tsvm/GraphicsJSR223Delegate.kt
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@@ -2242,6 +2242,23 @@ class GraphicsJSR223Delegate(private val vm: VM) {
}
}
private lateinit var quantTableY: FloatArray
private lateinit var quantTableCo: FloatArray
private lateinit var quantTableCg: FloatArray
private lateinit var quantTableB: FloatArray
fun tevPrepareQuantTable(qualityY: Int, qualityCo: Int, qualityCg: Int) {
val quantYmult = jpeg_quality_to_mult(qualityY)
val quantCOmult = jpeg_quality_to_mult(qualityCo)
val quantCGmult = jpeg_quality_to_mult(qualityCg)
val quantBmult = quantCGmult
quantTableY = QUANT_TABLE_Y.map { (it * quantYmult).coerceIn(1f, 255f) }.toFloatArray()
quantTableCo = QUANT_TABLE_C.map { (it * quantCOmult).coerceIn(1f, 255f) }.toFloatArray()
quantTableCg = QUANT_TABLE_C.map { (it * quantCGmult).coerceIn(1f, 255f) }.toFloatArray()
quantTableB = QUANT_TABLE_C.map { (it * quantBmult).coerceIn(1f, 255f) }.toFloatArray()
}
/**
* Hardware-accelerated TEV frame decoder for YCoCg-R 4:2:0 format
* Decodes compressed TEV block data directly to framebuffer
@@ -2255,7 +2272,7 @@ class GraphicsJSR223Delegate(private val vm: VM) {
* @param frameCounter Frame counter for temporal patterns
*/
fun tevDecode(blockDataPtr: Long, currentRGBAddr: Long, prevRGBAddr: Long,
width: Int, height: Int, qualityIndices: IntArray, frameCounter: Int,
width: Int, height: Int, frameCounter: Int,
debugMotionVectors: Boolean = false, tevVersion: Int = 2,
enableDeblocking: Boolean = true) {
@@ -2265,24 +2282,12 @@ class GraphicsJSR223Delegate(private val vm: VM) {
val blocksX = (width + 15) / 16 // 16x16 blocks now
val blocksY = (height + 15) / 16
val quantYmult = jpeg_quality_to_mult(qualityIndices[0])
val quantCOmult = jpeg_quality_to_mult(qualityIndices[1])
val quantCGmult = jpeg_quality_to_mult(qualityIndices[2])
val quantBmult = quantCGmult
// Apply rate control factor to quantization tables (if not ~1.0, skip optimization)
val quantTableY = QUANT_TABLE_Y.map { (it * quantYmult).coerceIn(1f, 255f) }.toFloatArray()
val quantTableCo = QUANT_TABLE_C.map { (it * quantCOmult).coerceIn(1f, 255f) }.toFloatArray()
val quantTableCg = QUANT_TABLE_C.map { (it * quantCGmult).coerceIn(1f, 255f) }.toFloatArray()
val quantTableB = QUANT_TABLE_C.map { it * quantBmult.toFloat() }.toFloatArray()
var readPtr = blockDataPtr
// decide increment "direction" by the sign of the pointer
val prevAddrIncVec = if (prevRGBAddr >= 0) 1 else -1
val thisAddrIncVec = if (currentRGBAddr >= 0) 1 else -1
for (by in 0 until blocksY) {
for (bx in 0 until blocksX) {
val startX = bx * 16