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This commit is contained in:
Ryan Oldenburg 2022-05-12 23:27:28 -05:00
parent 6f6f73382b
commit 68b9d63ecd
1 changed files with 6 additions and 10 deletions
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10
src/pixie/fileformats/jpeg.nim
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@ -283,10 +283,7 @@ proc decodeSOF0(state: var DecoderState) =
component.widthStride = state.numMcuWide * component.yScale * 8 component.widthStride = state.numMcuWide * component.yScale * 8
component.heightStride = state.numMcuHigh * component.xScale * 8 component.heightStride = state.numMcuHigh * component.xScale * 8
component.channel = newMask(component.widthStride, component.heightStride)
component.channel = newMask(
component.widthStride, component.heightStride
)
if state.progressive: if state.progressive:
component.widthCoeff = component.widthStride div 8 component.widthCoeff = component.widthStride div 8
@ -482,7 +479,8 @@ proc decodeRegularBlock(
failInvalid() failInvalid()
let let
diff = if t == 0: diff =
if t == 0:
0 0
else: else:
state.getBitsAsSignedInt(t) state.getBitsAsSignedInt(t)
@ -787,7 +785,6 @@ proc decodeBlocks(state: var DecoderState) =
## Decodes scan data blocks that follow a SOS block. ## Decodes scan data blocks that follow a SOS block.
if state.scanComponents == 1: if state.scanComponents == 1:
# Single component pass. # Single component pass.
let let
comp = state.componentOrder[0] comp = state.componentOrder[0]
w = (state.components[comp].width + 7) shr 3 w = (state.components[comp].width + 7) shr 3
@ -815,7 +812,6 @@ proc quantizationAndIDCTPass(state: var DecoderState) =
let let
w = (state.components[comp].width + 7) shr 3 w = (state.components[comp].width + 7) shr 3
h = (state.components[comp].height + 7) shr 3 h = (state.components[comp].height + 7) shr 3
for column in 0 ..< h: for column in 0 ..< h:
for row in 0 ..< w: for row in 0 ..< w:
var data = state.components[comp].blocks[row][column] var data = state.components[comp].blocks[row][column]