mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-13 22:46:06 +09:00
code cleanup
This commit is contained in:
minjaesong
@@ -25,78 +25,6 @@ class GraphicsJSR223Delegate(private val vm: VM) {
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private val idct8TempBuffer = FloatArray(64)
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private val idct16TempBuffer = FloatArray(256) // For 16x16 IDCT
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private val idct16SeparableBuffer = FloatArray(256) // For separable 16x16 IDCT
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// Lossless IDCT functions for float16 coefficients (no quantization)
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private fun tevIdct8x8_lossless(coeffs: FloatArray): IntArray {
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val result = IntArray(64)
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// Fast separable IDCT (row-column decomposition) for lossless coefficients
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// First pass: Process rows (8 1D IDCTs)
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for (row in 0 until 8) {
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for (col in 0 until 8) {
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var sum = 0f
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for (u in 0 until 8) {
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sum += dctBasis8[u][col] * coeffs[row * 8 + u]
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}
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idct8TempBuffer[row * 8 + col] = sum * 0.5f
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}
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}
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// Second pass: Process columns (8 1D IDCTs)
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for (col in 0 until 8) {
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for (row in 0 until 8) {
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var sum = 0f
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for (v in 0 until 8) {
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sum += dctBasis8[v][row] * idct8TempBuffer[v * 8 + col]
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}
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val finalValue = sum * 0.5f + 128f
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result[row * 8 + col] = if (finalValue.isNaN() || finalValue.isInfinite()) {
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println("NaN/Inf detected in 8x8 IDCT at ($row,$col): sum=$sum, finalValue=$finalValue")
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128 // Default to middle gray
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} else {
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finalValue.roundToInt().coerceIn(0, 255)
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}
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}
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}
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return result
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}
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private fun tevIdct16x16_lossless(coeffs: FloatArray): IntArray {
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val result = IntArray(256)
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// Fast separable IDCT (row-column decomposition) for 16x16 lossless coefficients
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// First pass: Process rows (16 1D IDCTs)
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for (row in 0 until 16) {
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for (col in 0 until 16) {
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var sum = 0f
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for (u in 0 until 16) {
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sum += dctBasis16[u][col] * coeffs[row * 16 + u]
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}
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idct16TempBuffer[row * 16 + col] = sum * 0.25f
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}
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}
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// Second pass: Process columns (16 1D IDCTs)
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for (col in 0 until 16) {
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for (row in 0 until 16) {
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var sum = 0f
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for (v in 0 until 16) {
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sum += dctBasis16[v][row] * idct16TempBuffer[v * 16 + col]
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}
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val finalValue = sum * 0.25f + 128f
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result[row * 16 + col] = if (finalValue.isNaN() || finalValue.isInfinite()) {
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println("NaN/Inf detected in 16x16 IDCT at ($row,$col): sum=$sum, finalValue=$finalValue")
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128 // Default to middle gray
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} else {
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finalValue.roundToInt().coerceIn(0, 255)
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}
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}
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}
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return result
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}
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private fun getFirstGPU(): GraphicsAdapter? {
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return vm.findPeribyType(VM.PERITYPE_GPU_AND_TERM)?.peripheral as? GraphicsAdapter
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@@ -3665,52 +3593,6 @@ class GraphicsJSR223Delegate(private val vm: VM) {
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}
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}
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private fun convertAndDoNothing(
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blocks: Array<ShortArray?>, quantTable: IntArray, qScale: Int, rateControlFactors: FloatArray,
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blocksX: Int, blocksY: Int,
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kLinearGradient: IntArray, kAlphaSqrt2: IntArray, kHalfSqrt2: Int
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): Array<FloatArray?> {
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val coeffsSize = 16 * 16
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val numBlocks = blocksX * blocksY
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val blocksMid = Array(numBlocks) { IntArray(coeffsSize) }
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for (blockIndex in 0 until numBlocks) {
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val block = blocks[blockIndex]
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if (block != null) {
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val rateControlFactor = rateControlFactors[blockIndex]
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for (i in 0 until coeffsSize) {
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val quantIdx = i.coerceIn(0, quantTable.size - 1)
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if (i == 0) {
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// DC coefficient: lossless (no quantization)
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val dcValue = block[i].toInt()
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blocksMid[blockIndex][i] = dcValue
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} else {
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// AC coefficients: use quantization intervals
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val quant = (quantTable[quantIdx] * jpeg_quality_to_mult(qScale * rateControlFactor)).coerceIn(1f, 255f).toInt()
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// Standard dequantized value (midpoint)
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blocksMid[blockIndex][i] = block[i].toInt() * quant
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}
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}
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}
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}
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val result = Array<FloatArray?>(blocks.size) { null }
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for (blockIndex in 0 until numBlocks) {
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val block = blocks[blockIndex]
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if (block != null) {
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result[blockIndex] = FloatArray(coeffsSize) { i ->
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blocksMid[blockIndex][i].toFloat()
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}
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}
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}
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return result
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}
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private fun convertAndOptimize8x8Blocks(
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blocks: Array<ShortArray?>, quantTable: IntArray, qScale: Int, rateControlFactors: FloatArray,
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blocksX: Int, blocksY: Int,
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@@ -3982,10 +3864,6 @@ class GraphicsJSR223Delegate(private val vm: VM) {
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} catch (e: Exception) {
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println("TAV decode error: ${e.message}")
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}
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// if (enableDeblocking) {
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// tavAdaptiveDeblockingFilter(currentRGBAddr, width, height)
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// }
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}
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private fun decodeDWTIntraTileRGB(readPtr: Long, tileX: Int, tileY: Int, currentRGBAddr: Long,
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@@ -4310,51 +4188,6 @@ class GraphicsJSR223Delegate(private val vm: VM) {
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)
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}
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private fun applyDWT53Forward(data: FloatArray, width: Int, height: Int) {
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// TODO: Implement 5/3 forward DWT
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// Lifting scheme implementation for 5/3 reversible filter
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}
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private fun applyDWT53Inverse(data: FloatArray, width: Int, height: Int) {
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// 5/3 reversible DWT inverse using lifting scheme
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// First apply horizontal inverse DWT on all rows
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val tempRow = FloatArray(width)
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for (y in 0 until height) {
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for (x in 0 until width) {
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tempRow[x] = data[y * width + x]
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}
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applyLift53InverseHorizontal(tempRow, width)
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for (x in 0 until width) {
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data[y * width + x] = tempRow[x]
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}
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}
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// Then apply vertical inverse DWT on all columns
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val tempCol = FloatArray(height)
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for (x in 0 until width) {
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for (y in 0 until height) {
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tempCol[y] = data[y * width + x]
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}
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applyLift53InverseVertical(tempCol, height)
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for (y in 0 until height) {
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data[y * width + x] = tempCol[y]
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}
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}
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}
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private fun applyDWT97Forward(data: FloatArray, width: Int, height: Int) {
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// TODO: Implement 9/7 forward DWT
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// Lifting scheme implementation for 9/7 irreversible filter
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}
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private fun generateWindowFunction(window: FloatArray, size: Int) {
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// Raised cosine (Hann) window for smooth blending
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for (i in 0 until size) {
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val t = i.toFloat() / (size - 1)
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window[i] = 0.5f * (1.0f - kotlin.math.cos(PI * t))
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}
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}
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private fun applyDWTInverseMultiLevel(data: FloatArray, width: Int, height: Int, levels: Int, filterType: Int) {
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// Multi-level inverse DWT - reconstruct from smallest to largest (reverse of encoder)
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val size = width // Full tile size (112 for TAV)
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@@ -4411,84 +4244,6 @@ class GraphicsJSR223Delegate(private val vm: VM) {
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}
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}
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private fun applyDWT97Inverse(data: FloatArray, width: Int, height: Int) {
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// 9/7 irreversible DWT inverse using lifting scheme
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// First apply horizontal inverse DWT on all rows
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val tempRow = FloatArray(width)
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for (y in 0 until height) {
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for (x in 0 until width) {
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tempRow[x] = data[y * width + x]
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}
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applyLift97InverseHorizontal(tempRow, width)
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for (x in 0 until width) {
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data[y * width + x] = tempRow[x]
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}
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}
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// Then apply vertical inverse DWT on all columns
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val tempCol = FloatArray(height)
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for (x in 0 until width) {
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for (y in 0 until height) {
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tempCol[y] = data[y * width + x]
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}
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applyLift97InverseVertical(tempCol, height)
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for (y in 0 until height) {
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data[y * width + x] = tempCol[y]
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}
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}
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}
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private fun applyLift97InverseHorizontal(row: FloatArray, width: Int) { TODO() }
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private fun applyLift97InverseVertical(col: FloatArray, height: Int) { TODO() }
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// 1D lifting scheme implementations for 5/3 filter
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private fun applyLift53InverseHorizontal(data: FloatArray, length: Int) {
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if (length < 2) return
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val temp = FloatArray(length)
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val half = (length + 1) / 2
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// Separate even and odd samples (inverse interleaving)
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for (i in 0 until half) {
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temp[i] = data[2 * i] // Even samples (low-pass)
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}
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for (i in 0 until length / 2) {
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temp[half + i] = data[2 * i + 1] // Odd samples (high-pass)
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}
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// Inverse lifting steps for 5/3 filter
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// Step 2: Undo update step - even[i] -= (odd[i-1] + odd[i] + 2) >> 2
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for (i in 1 until half) {
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val oddPrev = if (i - 1 >= 0) temp[half + i - 1] else 0.0f
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val oddCurr = if (i < length / 2) temp[half + i] else 0.0f
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temp[i] += (oddPrev + oddCurr + 2.0f) / 4.0f
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}
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if (half > 0) {
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val oddCurr = if (0 < length / 2) temp[half] else 0.0f
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temp[0] += oddCurr / 2.0f
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}
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// Step 1: Undo predict step - odd[i] += (even[i] + even[i+1]) >> 1
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for (i in 0 until length / 2) {
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val evenCurr = temp[i]
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val evenNext = if (i + 1 < half) temp[i + 1] else temp[half - 1]
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temp[half + i] -= (evenCurr + evenNext) / 2.0f
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}
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// Interleave back
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for (i in 0 until half) {
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data[2 * i] = temp[i]
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}
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for (i in 0 until length / 2) {
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data[2 * i + 1] = temp[half + i]
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}
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}
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private fun applyLift53InverseVertical(data: FloatArray, length: Int) {
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// Same as horizontal but for vertical direction
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applyLift53InverseHorizontal(data, length)
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}
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// 1D lifting scheme implementations for 9/7 irreversible filter
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private fun applyDWT97Inverse1D(data: FloatArray, length: Int) {
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if (length < 2) return
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@@ -4643,426 +4398,4 @@ class GraphicsJSR223Delegate(private val vm: VM) {
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}
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}
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private fun tavAdaptiveDeblockingFilter(rgbAddr: Long, width: Int, height: Int) {
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val tileSize = 112
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val tilesX = (width + tileSize - 1) / tileSize
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val tilesY = (height + tileSize - 1) / tileSize
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// Process vertical seams (between horizontally adjacent tiles)
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for (tileY in 0 until tilesY) {
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for (tileX in 0 until tilesX - 1) {
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val seamX = (tileX + 1) * tileSize // Actual boundary between tiles
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deblockVerticalSeamStrong(rgbAddr, width, height, seamX, tileY * tileSize, tileSize)
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}
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}
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// Process horizontal seams (between vertically adjacent tiles)
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for (tileY in 0 until tilesY - 1) {
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for (tileX in 0 until tilesX) {
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val seamY = (tileY + 1) * tileSize // Actual boundary between tiles
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deblockHorizontalSeamStrong(rgbAddr, width, height, tileX * tileSize, seamY, tileSize)
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}
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}
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}
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private fun deblockVerticalSeamStrong(rgbAddr: Long, width: Int, height: Int, seamX: Int, startY: Int, tileHeight: Int) {
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if (seamX >= width) return
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val endY = minOf(startY + tileHeight, height)
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for (y in startY until endY) {
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if (y >= height) break
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// Check for discontinuity across the seam
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val leftX = seamX - 1
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val rightX = seamX
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if (leftX >= 0 && rightX < width) {
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val leftOffset = (y * width + leftX) * 3L
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val rightOffset = (y * width + rightX) * 3L
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val leftR = vm.peek(rgbAddr + leftOffset).toInt() and 0xFF
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val leftG = vm.peek(rgbAddr + leftOffset + 1).toInt() and 0xFF
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val leftB = vm.peek(rgbAddr + leftOffset + 2).toInt() and 0xFF
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val rightR = vm.peek(rgbAddr + rightOffset).toInt() and 0xFF
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val rightG = vm.peek(rgbAddr + rightOffset + 1).toInt() and 0xFF
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val rightB = vm.peek(rgbAddr + rightOffset + 2).toInt() and 0xFF
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// Calculate discontinuity strength
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val diffR = abs(leftR - rightR)
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val diffG = abs(leftG - rightG)
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val diffB = abs(leftB - rightB)
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val maxDiff = maxOf(diffR, diffG, diffB)
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// Only apply deblocking if there's a significant discontinuity
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if (maxDiff in 2 until 120) {
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// Adaptive filter radius: wider for smooth gradients, narrower for sharp edges
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val filterRadius = when {
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maxDiff <= 15 -> 6 // Very smooth gradients: wide filter (13 pixels)
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maxDiff <= 30 -> 4 // Moderate gradients: medium filter (9 pixels)
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maxDiff <= 60 -> 3 // Sharp transitions: narrow filter (7 pixels)
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else -> 2 // Very sharp edges: minimal filter (5 pixels)
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}
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for (dx in -filterRadius..filterRadius) {
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val x = seamX + dx
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if (x in 0 until width) {
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val offset = (y * width + x) * 3L
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val currentR = vm.peek(rgbAddr + offset).toInt() and 0xFF
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val currentG = vm.peek(rgbAddr + offset + 1).toInt() and 0xFF
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val currentB = vm.peek(rgbAddr + offset + 2).toInt() and 0xFF
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var sumR = 0.0f
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var sumG = 0.0f
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var sumB = 0.0f
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var weightSum = 0.0f
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// Bilateral filtering with spatial and intensity weights
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for (sx in maxOf(0, x-filterRadius)..minOf(width-1, x+filterRadius)) {
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val sOffset = (y * width + sx) * 3L
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val sR = vm.peek(rgbAddr + sOffset).toInt() and 0xFF
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val sG = vm.peek(rgbAddr + sOffset + 1).toInt() and 0xFF
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val sB = vm.peek(rgbAddr + sOffset + 2).toInt() and 0xFF
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// Spatial weight (distance from current pixel)
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val spatialWeight = 1.0f / (1.0f + abs(sx - x))
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// Intensity weight (color similarity)
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val colorDiff = sqrt(((sR - currentR) * (sR - currentR) +
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(sG - currentG) * (sG - currentG) +
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(sB - currentB) * (sB - currentB)).toFloat())
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val intensityWeight = exp(-colorDiff / 30.0f)
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val totalWeight = spatialWeight * intensityWeight
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sumR += sR * totalWeight
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sumG += sG * totalWeight
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sumB += sB * totalWeight
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weightSum += totalWeight
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}
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if (weightSum > 0) {
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val filteredR = (sumR / weightSum).toInt()
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val filteredG = (sumG / weightSum).toInt()
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val filteredB = (sumB / weightSum).toInt()
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// Concentrate blur heavily at the seam boundary
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val distance = abs(dx).toFloat()
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val blendWeight = when {
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distance == 0.0f -> 0.95f // Maximum blur at exact seam
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distance == 1.0f -> 0.8f // Strong blur adjacent to seam
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distance == 2.0f -> 0.5f // Medium blur 2 pixels away
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else -> exp(-distance * distance / 1.5f) * 0.3f // Gentle falloff beyond
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}
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val finalR = (currentR * (1 - blendWeight) + filteredR * blendWeight).toInt().coerceIn(0, 255)
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val finalG = (currentG * (1 - blendWeight) + filteredG * blendWeight).toInt().coerceIn(0, 255)
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val finalB = (currentB * (1 - blendWeight) + filteredB * blendWeight).toInt().coerceIn(0, 255)
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vm.poke(rgbAddr + offset, finalR.toByte())
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vm.poke(rgbAddr + offset + 1, finalG.toByte())
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vm.poke(rgbAddr + offset + 2, finalB.toByte())
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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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private fun deblockHorizontalSeamStrong(rgbAddr: Long, width: Int, height: Int, startX: Int, seamY: Int, tileWidth: Int) {
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if (seamY >= height) return
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val endX = minOf(startX + tileWidth, width)
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for (x in startX until endX) {
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if (x >= width) break
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// Check for discontinuity across the seam
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val topY = seamY - 1
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val bottomY = seamY
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if (topY >= 0 && bottomY < height) {
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val topOffset = (topY * width + x) * 3L
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val bottomOffset = (bottomY * width + x) * 3L
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val topR = vm.peek(rgbAddr + topOffset).toInt() and 0xFF
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val topG = vm.peek(rgbAddr + topOffset + 1).toInt() and 0xFF
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val topB = vm.peek(rgbAddr + topOffset + 2).toInt() and 0xFF
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val bottomR = vm.peek(rgbAddr + bottomOffset).toInt() and 0xFF
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val bottomG = vm.peek(rgbAddr + bottomOffset + 1).toInt() and 0xFF
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val bottomB = vm.peek(rgbAddr + bottomOffset + 2).toInt() and 0xFF
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// Calculate discontinuity strength
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val diffR = abs(topR - bottomR)
|
||||
val diffG = abs(topG - bottomG)
|
||||
val diffB = abs(topB - bottomB)
|
||||
val maxDiff = maxOf(diffR, diffG, diffB)
|
||||
|
||||
// Only apply deblocking if there's a significant discontinuity
|
||||
if (maxDiff in 2 until 120) {
|
||||
// Adaptive filter radius: wider for smooth gradients, narrower for sharp edges
|
||||
val filterRadius = when {
|
||||
maxDiff <= 15 -> 6 // Very smooth gradients: wide filter (13 pixels)
|
||||
maxDiff <= 30 -> 4 // Moderate gradients: medium filter (9 pixels)
|
||||
maxDiff <= 60 -> 3 // Sharp transitions: narrow filter (7 pixels)
|
||||
else -> 2 // Very sharp edges: minimal filter (5 pixels)
|
||||
}
|
||||
|
||||
for (dy in -filterRadius..filterRadius) {
|
||||
val y = seamY + dy
|
||||
if (y in 0 until height) {
|
||||
val offset = (y * width + x) * 3L
|
||||
|
||||
val currentR = vm.peek(rgbAddr + offset).toInt() and 0xFF
|
||||
val currentG = vm.peek(rgbAddr + offset + 1).toInt() and 0xFF
|
||||
val currentB = vm.peek(rgbAddr + offset + 2).toInt() and 0xFF
|
||||
|
||||
var sumR = 0.0f
|
||||
var sumG = 0.0f
|
||||
var sumB = 0.0f
|
||||
var weightSum = 0.0f
|
||||
|
||||
// Bilateral filtering with spatial and intensity weights
|
||||
for (sy in maxOf(0, y-filterRadius)..minOf(height-1, y+filterRadius)) {
|
||||
val sOffset = (sy * width + x) * 3L
|
||||
val sR = vm.peek(rgbAddr + sOffset).toInt() and 0xFF
|
||||
val sG = vm.peek(rgbAddr + sOffset + 1).toInt() and 0xFF
|
||||
val sB = vm.peek(rgbAddr + sOffset + 2).toInt() and 0xFF
|
||||
|
||||
// Spatial weight (distance from current pixel)
|
||||
val spatialWeight = 1.0f / (1.0f + abs(sy - y))
|
||||
|
||||
// Intensity weight (color similarity)
|
||||
val colorDiff = sqrt(((sR - currentR) * (sR - currentR) +
|
||||
(sG - currentG) * (sG - currentG) +
|
||||
(sB - currentB) * (sB - currentB)).toFloat())
|
||||
val intensityWeight = exp(-colorDiff / 30.0f)
|
||||
|
||||
val totalWeight = spatialWeight * intensityWeight
|
||||
|
||||
sumR += sR * totalWeight
|
||||
sumG += sG * totalWeight
|
||||
sumB += sB * totalWeight
|
||||
weightSum += totalWeight
|
||||
}
|
||||
|
||||
if (weightSum > 0) {
|
||||
val filteredR = (sumR / weightSum).toInt()
|
||||
val filteredG = (sumG / weightSum).toInt()
|
||||
val filteredB = (sumB / weightSum).toInt()
|
||||
|
||||
// Concentrate blur heavily at the seam boundary
|
||||
val distance = abs(dy).toFloat()
|
||||
val blendWeight = when {
|
||||
distance == 0.0f -> 0.95f // Maximum blur at exact seam
|
||||
distance == 1.0f -> 0.8f // Strong blur adjacent to seam
|
||||
distance == 2.0f -> 0.5f // Medium blur 2 pixels away
|
||||
else -> exp(-distance * distance / 1.5f) * 0.3f // Gentle falloff beyond
|
||||
}
|
||||
|
||||
val finalR = (currentR * (1 - blendWeight) + filteredR * blendWeight).toInt().coerceIn(0, 255)
|
||||
val finalG = (currentG * (1 - blendWeight) + filteredG * blendWeight).toInt().coerceIn(0, 255)
|
||||
val finalB = (currentB * (1 - blendWeight) + filteredB * blendWeight).toInt().coerceIn(0, 255)
|
||||
|
||||
vm.poke(rgbAddr + offset, finalR.toByte())
|
||||
vm.poke(rgbAddr + offset + 1, finalG.toByte())
|
||||
vm.poke(rgbAddr + offset + 2, finalB.toByte())
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private fun analyzeTextureComplexity(rgbAddr: Long, width: Int, height: Int, centerX: Int, centerY: Int, isVerticalSeam: Boolean): Float {
|
||||
val radius = 4
|
||||
var totalVariance = 0.0f
|
||||
var count = 0
|
||||
|
||||
// Calculate variance in a small window around the seam
|
||||
for (dy in -radius..radius) {
|
||||
for (dx in -radius..radius) {
|
||||
val x = centerX + dx
|
||||
val y = centerY + dy
|
||||
|
||||
if (x >= 0 && x < width && y >= 0 && y < height) {
|
||||
val offset = (y * width + x) * 3L
|
||||
val r = vm.peek(rgbAddr + offset).toInt() and 0xFF
|
||||
val g = vm.peek(rgbAddr + offset + 1).toInt() and 0xFF
|
||||
val b = vm.peek(rgbAddr + offset + 2).toInt() and 0xFF
|
||||
|
||||
val luma = 0.299f * r + 0.587f * g + 0.114f * b
|
||||
|
||||
// Compare with adjacent pixels to measure local variance
|
||||
if (x > 0) {
|
||||
val leftOffset = (y * width + (x-1)) * 3L
|
||||
val leftR = vm.peek(rgbAddr + leftOffset).toInt() and 0xFF
|
||||
val leftG = vm.peek(rgbAddr + leftOffset + 1).toInt() and 0xFF
|
||||
val leftB = vm.peek(rgbAddr + leftOffset + 2).toInt() and 0xFF
|
||||
val leftLuma = 0.299f * leftR + 0.587f * leftG + 0.114f * leftB
|
||||
|
||||
totalVariance += abs(luma - leftLuma)
|
||||
count++
|
||||
}
|
||||
|
||||
if (y > 0) {
|
||||
val topOffset = ((y-1) * width + x) * 3L
|
||||
val topR = vm.peek(rgbAddr + topOffset).toInt() and 0xFF
|
||||
val topG = vm.peek(rgbAddr + topOffset + 1).toInt() and 0xFF
|
||||
val topB = vm.peek(rgbAddr + topOffset + 2).toInt() and 0xFF
|
||||
val topLuma = 0.299f * topR + 0.587f * topG + 0.114f * topB
|
||||
|
||||
totalVariance += abs(luma - topLuma)
|
||||
count++
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return if (count > 0) totalVariance / count else 0.0f
|
||||
}
|
||||
|
||||
private fun bilinearInterpolate(
|
||||
dataPtr: Long, width: Int, height: Int,
|
||||
x: Float, y: Float
|
||||
): Float {
|
||||
val x0 = floor(x).toInt()
|
||||
val y0 = floor(y).toInt()
|
||||
val x1 = x0 + 1
|
||||
val y1 = y0 + 1
|
||||
|
||||
if (x0 < 0 || y0 < 0 || x1 >= width || y1 >= height) {
|
||||
return 0.0f // Out of bounds
|
||||
}
|
||||
|
||||
val fx = x - x0
|
||||
val fy = y - y0
|
||||
|
||||
val p00 = vm.peekFloat(dataPtr + (y0 * width + x0) * 4L)!!
|
||||
val p10 = vm.peekFloat(dataPtr + (y0 * width + x1) * 4L)!!
|
||||
val p01 = vm.peekFloat(dataPtr + (y1 * width + x0) * 4L)!!
|
||||
val p11 = vm.peekFloat(dataPtr + (y1 * width + x1) * 4L)!!
|
||||
|
||||
return p00 * (1 - fx) * (1 - fy) +
|
||||
p10 * fx * (1 - fy) +
|
||||
p01 * (1 - fx) * fy +
|
||||
p11 * fx * fy
|
||||
}
|
||||
|
||||
/**
|
||||
* TAV deblocking filter - reduces DWT quantization artifacts and tile boundary artifacts
|
||||
* Applies a gentle smoothing filter across tile boundaries and high-frequency areas
|
||||
*/
|
||||
private fun tavDeblockingFilter(rgbAddr: Long, width: Int, height: Int) {
|
||||
val tileSize = 112 // TAV uses 112x112 tiles
|
||||
val tilesX = (width + tileSize - 1) / tileSize
|
||||
val tilesY = (height + tileSize - 1) / tileSize
|
||||
val thisAddrIncVec: Long = if (rgbAddr < 0) -1 else 1
|
||||
|
||||
// Process tile boundaries (horizontal and vertical)
|
||||
for (tileY in 0 until tilesY) {
|
||||
for (tileX in 0 until tilesX) {
|
||||
val startX = tileX * tileSize
|
||||
val startY = tileY * tileSize
|
||||
val endX = kotlin.math.min(startX + tileSize, width)
|
||||
val endY = kotlin.math.min(startY + tileSize, height)
|
||||
|
||||
// Smooth vertical tile boundaries
|
||||
if (tileX > 0 && startX < width) {
|
||||
for (y in startY until endY) {
|
||||
smoothVerticalBoundary(rgbAddr, width, height, startX - 1, y, thisAddrIncVec)
|
||||
}
|
||||
}
|
||||
|
||||
// Smooth horizontal tile boundaries
|
||||
if (tileY > 0 && startY < height) {
|
||||
for (x in startX until endX) {
|
||||
smoothHorizontalBoundary(rgbAddr, width, height, x, startY - 1, thisAddrIncVec)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Apply gentle smoothing to reduce DWT quantization artifacts
|
||||
applyDWTSmoothing(rgbAddr, width, height, thisAddrIncVec)
|
||||
}
|
||||
|
||||
private fun smoothVerticalBoundary(rgbAddr: Long, width: Int, height: Int, x: Int, y: Int, addrInc: Long) {
|
||||
if (x < 1 || x >= width - 1 || y < 0 || y >= height) return
|
||||
|
||||
for (channel in 0 until 3) {
|
||||
val leftOffset = (y.toLong() * width + (x - 1)) * 3 + channel
|
||||
val centerOffset = (y.toLong() * width + x) * 3 + channel
|
||||
val rightOffset = (y.toLong() * width + (x + 1)) * 3 + channel
|
||||
|
||||
val left = vm.peek(rgbAddr + leftOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
val center = vm.peek(rgbAddr + centerOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
val right = vm.peek(rgbAddr + rightOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
|
||||
// Apply gentle 3-tap filter: [0.25, 0.5, 0.25]
|
||||
val smoothed = ((left + 2 * center + right) / 4).coerceIn(0, 255)
|
||||
vm.poke(rgbAddr + centerOffset * addrInc, smoothed.toByte())
|
||||
}
|
||||
}
|
||||
|
||||
private fun smoothHorizontalBoundary(rgbAddr: Long, width: Int, height: Int, x: Int, y: Int, addrInc: Long) {
|
||||
if (x < 0 || x >= width || y < 1 || y >= height - 1) return
|
||||
|
||||
for (channel in 0 until 3) {
|
||||
val topOffset = ((y - 1).toLong() * width + x) * 3 + channel
|
||||
val centerOffset = (y.toLong() * width + x) * 3 + channel
|
||||
val bottomOffset = ((y + 1).toLong() * width + x) * 3 + channel
|
||||
|
||||
val top = vm.peek(rgbAddr + topOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
val center = vm.peek(rgbAddr + centerOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
val bottom = vm.peek(rgbAddr + bottomOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
|
||||
// Apply gentle 3-tap filter: [0.25, 0.5, 0.25]
|
||||
val smoothed = ((top + 2 * center + bottom) / 4).coerceIn(0, 255)
|
||||
vm.poke(rgbAddr + centerOffset * addrInc, smoothed.toByte())
|
||||
}
|
||||
}
|
||||
|
||||
private fun applyDWTSmoothing(rgbAddr: Long, width: Int, height: Int, addrInc: Long) {
|
||||
// Apply very gentle smoothing to reduce DWT quantization artifacts
|
||||
// Uses a 3x3 Gaussian-like kernel with low strength
|
||||
val kernel = arrayOf(
|
||||
arrayOf(1, 2, 1),
|
||||
arrayOf(2, 4, 2),
|
||||
arrayOf(1, 2, 1)
|
||||
)
|
||||
val kernelSum = 16
|
||||
|
||||
// Process inner pixels only to avoid boundary issues
|
||||
for (y in 1 until height - 1) {
|
||||
for (x in 1 until width - 1) {
|
||||
for (channel in 0 until 3) {
|
||||
var sum = 0
|
||||
|
||||
for (ky in -1..1) {
|
||||
for (kx in -1..1) {
|
||||
val pixelOffset = ((y + ky).toLong() * width + (x + kx)) * 3 + channel
|
||||
val pixelValue = vm.peek(rgbAddr + pixelOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
sum += pixelValue * kernel[ky + 1][kx + 1]
|
||||
}
|
||||
}
|
||||
|
||||
val centerOffset = (y.toLong() * width + x) * 3 + channel
|
||||
val originalValue = vm.peek(rgbAddr + centerOffset * addrInc)?.toUint()?.toInt() ?: 0
|
||||
|
||||
// Blend original with smoothed (low strength: 75% original, 25% smoothed)
|
||||
val smoothedValue = sum / kernelSum
|
||||
val blendedValue = ((originalValue * 3 + smoothedValue) / 4).coerceIn(0, 255)
|
||||
|
||||
vm.poke(rgbAddr + centerOffset * addrInc, blendedValue.toByte())
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user