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This commit is contained in:
Ryan Oldenburg 2022-05-12 23:02:20 -05:00
parent 2991c16c9d
commit 86f9f25011
1 changed files with 8 additions and 8 deletions
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16
src/pixie/fileformats/jpeg.nim
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@ -839,13 +839,13 @@ proc magnifyXBy2(mask: Mask): Mask =
let n = 3 * mask.unsafe[x, y].uint16
if x == 0:
result.unsafe[x * 2 + 0, y] = mask.unsafe[x, y]
result.unsafe[x * 2 + 1, y] = ((n + mask.unsafe[x+1, y].uint16 + 2) div 4).uint8
result.unsafe[x * 2 + 1, y] = ((n + mask.unsafe[x + 1, y].uint16 + 2) div 4).uint8
elif x == mask.width - 1:
result.unsafe[x * 2 + 0, y] = ((n + mask.unsafe[x-1, y].uint16 + 2) div 4).uint8
result.unsafe[x * 2 + 0, y] = ((n + mask.unsafe[x - 1, y].uint16 + 2) div 4).uint8
result.unsafe[x * 2 + 1, y] = mask.unsafe[x, y]
else:
result.unsafe[x * 2 + 0, y] = ((n + mask.unsafe[x-1, y].uint16) div 4).uint8
result.unsafe[x * 2 + 1, y] = ((n + mask.unsafe[x+1, y].uint16) div 4).uint8
result.unsafe[x * 2 + 0, y] = ((n + mask.unsafe[x - 1, y].uint16) div 4).uint8
result.unsafe[x * 2 + 1, y] = ((n + mask.unsafe[x + 1, y].uint16) div 4).uint8
proc magnifyYBy2(mask: Mask): Mask =
## Smooth magnify by power of 2 only in the Y direction.
@ -855,13 +855,13 @@ proc magnifyYBy2(mask: Mask): Mask =
let n = 3 * mask.unsafe[x, y].uint16
if y == 0:
result.unsafe[x, y * 2 + 0] = mask.unsafe[x, y]
result.unsafe[x, y * 2 + 1] = ((n + mask.unsafe[x, y+1].uint16 + 2) div 4).uint8
result.unsafe[x, y * 2 + 1] = ((n + mask.unsafe[x, y + 1].uint16 + 2) div 4).uint8
elif y == mask.height - 1:
result.unsafe[x, y * 2 + 0] = ((n + mask.unsafe[x, y-1].uint16 + 2) div 4).uint8
result.unsafe[x, y * 2 + 0] = ((n + mask.unsafe[x, y - 1].uint16 + 2) div 4).uint8
result.unsafe[x, y * 2 + 1] = mask.unsafe[x, y]
else:
result.unsafe[x, y * 2 + 0] = ((n + mask.unsafe[x, y-1].uint16) div 4).uint8
result.unsafe[x, y * 2 + 1] = ((n + mask.unsafe[x, y+1].uint16) div 4).uint8
result.unsafe[x, y * 2 + 0] = ((n + mask.unsafe[x, y - 1].uint16) div 4).uint8
result.unsafe[x, y * 2 + 1] = ((n + mask.unsafe[x, y + 1].uint16) div 4).uint8
proc yCbCrToRgbx(py, pcb, pcr: uint8): ColorRGBX =
## Takes a 3 component yCbCr outputs and populates image.