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Fix TIFF saving

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there was a buffer overrun error with image which heigh
was not a multiple of 64.
This commit is contained in:
Thomas Bernard 2021-04-03 14:09:26 +02:00
parent 103fc6bd49
commit 77f24ad3a4
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GPG Key ID: DB511043A31ACAAF
1 changed files with 7 additions and 1 deletions
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8
src/tifformat.c
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@ -684,6 +684,7 @@ void Save_TIFF_Sub(T_IO_Context * context, TIFF * tif)
snprintf(version, sizeof(version), "GrafX2 %s.%s", Program_version, SVN_revision);
width = context->Width;
height = context->Height;
// Convert the palette from 8 bits per component to 16 bits per compenent
for (i = 0; i < 256; i++)
{
colormap.r[i] = 0x101 * context->Palette[i].R;
@ -731,7 +732,12 @@ void Save_TIFF_Sub(T_IO_Context * context, TIFF * tif)
#else
for (y = 0, strip = 0; y < height; y += rowsperstrip, strip++)
{
if (TIFFWriteEncodedStrip(tif, strip, context->Target_address + y*context->Pitch, rowsperstrip * context->Pitch) < 0)
tsize_t size; // bytes to write
if (y + rowsperstrip > height)
size = (height - y) * context->Pitch;
else
size = rowsperstrip * context->Pitch;
if (TIFFWriteEncodedStrip(tif, strip, context->Target_address + y * context->Pitch, size) < 0)
return;
}
#endif