noot
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43
palette.go
43
palette.go
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@ -5,15 +5,16 @@ import (
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"fmt"
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"image/color"
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"io"
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"log"
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)
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type PaletteSection struct {
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Version uint32
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Params [4]uint32
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Divided bool
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DataLength uint32
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Palette [256]color.Color
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MainBound [2]uint32
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Version uint32
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Params [4]uint32
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OpaqueIndexCount uint32
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DataLength uint32
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Palette [256]*color.RGBA
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MainBounds [2]uint32
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lastSignature [4]byte
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}
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@ -25,18 +26,16 @@ func (p *PaletteSection) Decode(rd io.Reader) error {
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if sig, target := string(p.lastSignature[:]), "PAL_"; sig != target {
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return fmt.Errorf("bad sig: want %s, got %s", target, sig)
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}
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p.Palette = [256]color.Color{}
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p.Palette = [256]*color.RGBA{}
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if err := binary.Read(rd, end, &p.Version); err != nil {
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return err
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}
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if err := binary.Read(rd, end, p.Params[:]); err != nil {
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return err
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}
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var cast uint32
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if err := binary.Read(rd, end, &cast); err != nil {
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if err := binary.Read(rd, end, &p.OpaqueIndexCount); err != nil {
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return err
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}
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p.Divided = (cast > 0)
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if err := binary.Read(rd, end, &p.DataLength); err != nil {
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return err
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}
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@ -58,10 +57,30 @@ func (p *PaletteSection) Decode(rd io.Reader) error {
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alpha,
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}
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}
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if p.Divided {
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if err := binary.Read(rd, end, p.MainBound[:]); err != nil {
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for i := uint32(0); i < p.OpaqueIndexCount; i++ {
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var first uint32
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if err := binary.Read(rd, end, &first); err != nil {
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return err
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}
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var last uint32
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if err := binary.Read(rd, end, &last); err != nil {
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return err
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}
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log.Println("oic", p.OpaqueIndexCount, i, first, last)
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// TODO: figure out what setBoard actually does
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//p.setBoard(first, last, 255)
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}
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return nil
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}
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func (p *PaletteSection) setBoard(start uint32, end uint32, alpha int32) {
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if !(start >= 0 && end >= 0 && start < 256 && end < 256) {
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return
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}
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for i := start; i <= end; i++ {
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p.Palette[i].A = uint8(alpha)
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}
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}
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