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Ignore int16 overflows.

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treeform 2022-05-07 11:20:05 -07:00
parent bc635bc3da
commit d1780825e3
1 changed files with 2 additions and 2 deletions
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4
src/pixie/fileformats/jpeg.nim
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@ -770,8 +770,6 @@ proc idctBlock(component: var Component, offset: int, data: array[64, int16]) =
component.channel.data[outPos + 3] = clampByte((x3 + t0) shr 17) component.channel.data[outPos + 3] = clampByte((x3 + t0) shr 17)
component.channel.data[outPos + 4] = clampByte((x3 - t0) shr 17) component.channel.data[outPos + 4] = clampByte((x3 - t0) shr 17)
{.pop.}
proc decodeBlock(state: var DecoderState, comp, row, column: int) = proc decodeBlock(state: var DecoderState, comp, row, column: int) =
## Decodes a block. ## Decodes a block.
var data = state.components[comp].blocks[row][column] var data = state.components[comp].blocks[row][column]
@ -908,6 +906,8 @@ proc magnifyYBy2(mask: Mask): Mask =
result[x, y * 2 + 0] = mask[x, y] div 2 + mask[x, y-1] div 2 result[x, y * 2 + 0] = mask[x, y] div 2 + mask[x, y-1] div 2
result[x, y * 2 + 1] = mask[x, y] div 2 + mask[x, y+1] div 2 result[x, y * 2 + 1] = mask[x, y] div 2 + mask[x, y+1] div 2
{.pop.}
proc buildImage(state: var DecoderState): Image = proc buildImage(state: var DecoderState): Image =
## Takes a jpeg image object and builds a pixie Image from it. ## Takes a jpeg image object and builds a pixie Image from it.