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Handle PIXEL_TALL3 mode in file formats (GIF)

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Thomas Bernard
2018-01-08 18:14:51 +01:00
parent 0285f37fc2
commit 8dfd6d6c97
3 changed files with 24 additions and 16 deletions
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28
src/fileformats.c
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@@ -4087,12 +4087,19 @@ void Load_GIF(T_IO_Context * context)
Original_screen_X=LSDB.Width;
Original_screen_Y=LSDB.Height;
if (LSDB.Aspect==17)
ratio=PIXEL_TALL;
else if (LSDB.Aspect==113)
ratio=PIXEL_WIDE;
else
ratio=PIXEL_SIMPLE;
switch(LSDB.Aspect) {
case 17: // (17 + 15) / 64 = 1:2
ratio=PIXEL_TALL;
break;
case 33: // (33 + 15) / 64 = 3:4
ratio=PIXEL_TALL3;
break;
case 113: // (113 + 15) / 64 = 2:1
ratio=PIXEL_WIDE;
break;
default:
ratio=PIXEL_SIMPLE;
}
Pre_load(context, LSDB.Width,LSDB.Height,file_size,FORMAT_GIF,ratio,(LSDB.Resol&7)+1);
context->Width=LSDB.Width;
@@ -4657,10 +4664,15 @@ void Save_GIF(T_IO_Context * context)
switch(context->Ratio)
{
case PIXEL_TALL:
LSDB.Aspect = 17; // 1:2
case PIXEL_TALL2:
LSDB.Aspect = 17; // 1:2 = 2:4
break;
case PIXEL_TALL3:
LSDB.Aspect = 33; // 3:4
break;
case PIXEL_WIDE:
LSDB.Aspect = 113; // 2:1
case PIXEL_WIDE2:
LSDB.Aspect = 113; // 2:1 = 4:2
break;
default:
LSDB.Aspect = 0; // undefined, which is most frequent.