marathon: split pict module into multiple files
parent
c5cd1aecf3
commit
651efd1f32
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@ -1,212 +1,13 @@
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//! QuickDraw PICT format loader.
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pub mod clut;
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pub mod pm;
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pub mod rle;
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use crate::durandal::{bin::*, err::*, image::*};
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use std::convert::TryFrom;
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// Reads a `PixMap` header.
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fn read_pm_header<'a>(b: &'a [u8],
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pack: bool,
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clip: bool,
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im: &Image8)
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-> ResultS<(&'a [u8], Header)>
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{
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read_data! {
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endian: BIG, buf: b, size: 36, start: 0, data {
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let pt_fl = u16[0];
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let top = u16[2] usize;
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let left = u16[4] usize;
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let bottom = u16[6] usize;
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let right = u16[8] usize;
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let pack_t = u16[12] enum PackType;
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let depth = u16[28] enum Depth;
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}
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}
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if pt_fl & 0x8000 == 0 {
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bail!("PICT1 not supported");
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}
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if right - left != im.w() || bottom - top != im.h() {
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bail!("image bounds are incorrect");
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}
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let mut p = 46;
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// get CLUT if packed
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let clut = if pack {
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let (clut, sz) = get_clut(&b[p..])?;
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p += sz;
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Some(clut)
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} else {
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None
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};
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p += 18; // srcRect, dstRect, mode
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if clip {
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p += usize::from(u16b(&b[p..])); // maskRgn
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}
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let rle = pack_t == PackType::Default ||
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pack_t == PackType::Rle16 && depth == Depth::_16 ||
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pack_t == PackType::Rle32 && depth == Depth::_32;
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let pitch = usize::from(pt_fl & 0x3FFF);
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Ok((&b[p..], Header{pitch, pack_t, depth, clut, rle}))
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}
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// Reads an indexed `PixMap`.
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fn read_pm_ind(mut im: Image8, b: &[u8], hdr: Header) -> ResultS<Image8>
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{
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let clut = ok!(hdr.clut, "no CLUT in indexed mode")?;
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let mut p = 0;
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if hdr.pitch < 8 && hdr.depth == Depth::_8 {
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// uncompressed 8-bit colormap indices
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for _ in 0..im.h() {
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for _ in 0..im.w() {
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let idx = usize::from(b[p]);
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im.cr.push(ok!(clut.get(idx), "invalid index")?.clone());
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p += 1;
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}
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}
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Ok(im)
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} else if hdr.rle {
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// RLE compressed 1, 2, 4 or 8 bit colormap indices
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for _ in 0..im.h() {
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let (d, pp) = read_rle::<u8>(&b[p..], hdr.pitch)?;
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let d = if hdr.depth < Depth::_8 {
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expand_data(d, hdr.depth)?
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} else {
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d
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};
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p += pp;
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for &idx in &d {
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im.cr
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.push(ok!(clut.get(usize::from(idx)), "invalid index")?.clone());
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}
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}
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Ok(im)
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} else {
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bail!("invalid configuration")
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}
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}
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// Reads a R5G5B5 `PixMap`.
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fn read_pm_16(mut im: Image8, b: &[u8], hdr: Header) -> ResultS<Image8>
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{
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let mut p = 0;
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if hdr.pitch < 8 || hdr.pack_t == PackType::None {
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// uncompressed R5G5B5
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for _ in 0..im.h() {
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for _ in 0..im.w() {
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let cr = u16b(&b[p..]);
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im.cr.push(r5g5b5_to_rgb8(cr));
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p += 2;
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}
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}
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Ok(im)
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} else if hdr.rle {
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// RLE compressed R5G5B5
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for _ in 0..im.h() {
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let (d, pp) = read_rle::<u16>(&b[p..], hdr.pitch)?;
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p += pp;
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for &cr in &d {
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im.cr.push(r5g5b5_to_rgb8(cr));
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}
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}
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Ok(im)
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} else {
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bail!("invalid configuration")
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}
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}
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// Reads a RGB8 `PixMap`.
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fn read_pm_32(mut im: Image8, b: &[u8], hdr: Header) -> ResultS<Image8>
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{
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let mut p = 0;
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if hdr.pitch < 8 ||
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hdr.pack_t == PackType::None ||
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hdr.pack_t == PackType::NoPad
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{
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// uncompressed RGB8 or XRGB8
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for _ in 0..im.h() {
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for _ in 0..im.w() {
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if hdr.pack_t != PackType::NoPad {
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p += 1;
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}
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read_data! {
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endian: BIG, buf: b, size: 3, start: p, data {
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let r = u8[0];
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let g = u8[1];
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let b = u8[2];
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}
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}
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im.cr.push(Color8::new(r, g, b));
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p += 3;
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}
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}
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Ok(im)
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} else if hdr.rle {
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// RLE compressed RGB8
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let pitch = hdr.pitch - im.w(); // remove padding byte from pitch
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for _ in 0..im.h() {
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let (d, pp) = read_rle::<u8>(&b[p..], pitch)?;
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p += pp;
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for x in 0..im.w() {
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let r = d[x + im.w()];
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let g = d[x + im.w() * 2];
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let b = d[x + im.w() * 3];
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im.cr.push(Color8::new(r, g, b));
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}
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}
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Ok(im)
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} else {
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bail!("invalid configuration")
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}
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}
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// Process a `CopyBits` operation.
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fn read_pm_area(im: Image8, b: &[u8], pack: bool, clip: bool)
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-> ResultS<Image8>
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{
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let p = if pack {0} else {4};
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let (b, hdr) = read_pm_header(&b[p..], pack, clip, &im)?;
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match hdr.depth {
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Depth::_1 |
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Depth::_2 |
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Depth::_4 |
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Depth::_8 => read_pm_ind(im, b, hdr),
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Depth::_16 => read_pm_16(im, b, hdr),
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Depth::_32 => read_pm_32(im, b, hdr),
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}
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}
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/// Load a `PICT` image.
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pub fn load_pict(b: &[u8]) -> ResultS<Image8>
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pub fn read(b: &[u8]) -> ResultS<Image8>
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{
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read_data! {
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endian: BIG, buf: b, size: 10, start: 0, data {
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@ -235,75 +36,75 @@ pub fn load_pict(b: &[u8]) -> ResultS<Image8>
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match op {
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0x0098 => {
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// PackBitsRect
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return read_pm_area(im, &b[p..], true, false);
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return pm::area::read(im, &b[p..], true, false);
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}
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0x0099 => {
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// PackBitsRgn
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return read_pm_area(im, &b[p..], true, true);
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return pm::area::read(im, &b[p..], true, true);
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}
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0x009A => {
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0x009a => {
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// DirectBitsRect
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return read_pm_area(im, &b[p..], false, false);
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return pm::area::read(im, &b[p..], false, false);
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}
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0x009B => {
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0x009b => {
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// DirectBitsRgn
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return read_pm_area(im, &b[p..], false, true);
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return pm::area::read(im, &b[p..], false, true);
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}
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0x8200 => {
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// CompressedQuickTime
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unimplemented!();
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}
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0x00FF => {
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0x00ff => {
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// OpEndPic
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break;
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}
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// help i'm trapped in an awful metafile format from the 80s
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0x0000 | // NoOp
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0x001C | // HiliteMode
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0x001E | // DefHilite
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0x001c | // HiliteMode
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0x001e | // DefHilite
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0x0038 | // FrameSameRect
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0x0039 | // PaintSameRect
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0x003A | // EraseSameRect
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0x003B | // InvertSameRect
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0x003C | // FillSameRect
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0x003a | // EraseSameRect
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0x003b | // InvertSameRect
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0x003c | // FillSameRect
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0x8000 | // Reserved
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0x8100 => (), // Reserved
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0x0003 | // TxFont
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0x0004 | // TxFace
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0x0005 | // TxMode
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0x0008 | // PnMode
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0x000D | // TxSize
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0x000d | // TxSize
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0x0011 | // VersionOp
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0x0015 | // PnLocHFrac
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0x0016 | // ChExtra
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0x0023 | // ShortLineFrom
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0x00A0 => p += 2, // ShortComment
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0x00a0 => p += 2, // ShortComment
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0x0006 | // SpExtra
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0x0007 | // PnSize
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0x000B | // OvSize
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0x000C | // Origin
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0x000E | // FgCol
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0x000F | // BkCol
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0x000b | // OvSize
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0x000c | // Origin
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0x000e | // FgCol
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0x000f | // BkCol
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0x0021 => p += 4, // LineFrom
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0x001A | // RGBFgCol
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0x001B | // RGBBkCol
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0x001D | // TxRatio
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0x001a | // RGBFgCol
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0x001b | // RGBBkCol
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0x001d | // TxRatio
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0x0022 => p += 6, // ShortLine
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0x0002 | // BkPat
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0x0009 | // PnPat
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0x0010 | // TxRatio
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0x0020 | // Line
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0x002E | // GlyphState
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0x002e | // GlyphState
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0x0030 | // FrameRect
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0x0031 | // PaintRect
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0x0032 | // EraseRect
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0x0033 | // InvertRect
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0x0034 => p += 8, // FillRect
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0x002D => p += 10, // LineJustify
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0x002d => p += 10, // LineJustify
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0x0001 => p += usize::from(u16b(&b[p.. ]) & !1), // Clip
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0x00A1 => p += usize::from(u16b(&b[p+2..]) & !1) + 2, // LongComment
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0x00a1 => p += usize::from(u16b(&b[p+2..]) & !1) + 2, // LongComment
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0x100..=
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0x7FFF => p += usize::from(op >> 8) * 2, // Reserved
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0x7fff => p += usize::from(op >> 8) * 2, // Reserved
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_ => {
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bail!("invalid op in PICT");
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}
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@ -313,196 +114,4 @@ pub fn load_pict(b: &[u8]) -> ResultS<Image8>
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Err(err_msg("no image in data"))
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}
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/// Read a `ColorTable` structure.
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pub fn get_clut(b: &[u8]) -> ResultS<(Vec<Color8>, usize)>
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{
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read_data! {
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endian: BIG, buf: b, size: 8, start: 0, data {
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let dev = u16[4];
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let num = u16[6] usize;
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}
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}
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let dev = dev & 0x8000 != 0;
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let num = num + 1;
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let mut p = 8;
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let mut clut = vec![Color8::new(0, 0, 0); num];
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for i in 0..num {
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read_data! {
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endian: BIG, buf: b, size: 8, start: p, data {
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let n = u16[0] usize;
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let r = u8[2];
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let g = u8[4];
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let b = u8[6];
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}
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}
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// with device mapping, we ignore the index entirely
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let n = if dev {i} else {n};
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*ok!(clut.get_mut(n), "invalid index")? = Color8::new(r, g, b);
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p += 8;
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}
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Ok((clut, p))
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}
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// Read run-length encoded data.
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fn read_rle<T>(b: &[u8], pitch: usize) -> ResultS<(Vec<T>, usize)>
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where T: ReadRleData
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{
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let mut p = 0;
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let mut o = Vec::with_capacity(pitch);
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let sz = if pitch > 250 {
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(usize::from(u16b(b)) + 2, p += 2).0
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} else {
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(usize::from(b[0]) + 1, p += 1).0
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};
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while p < sz {
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let szf = b[p];
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let cmp = szf & 0x80 != 0;
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let len = usize::from(if cmp {!szf + 2} else {szf + 1});
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p += 1;
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o.reserve(len);
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T::read_rle_data(b, &mut p, cmp, len, &mut o);
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}
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if o.len() == pitch {
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Ok((o, p))
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} else {
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Err(err_msg("incorrect size for compressed scanline"))
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}
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}
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trait ReadRleData: Sized
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{
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// Read a sequence of packed RLE data.
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fn read_rle_data(b: &[u8],
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p: &mut usize,
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cmp: bool,
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len: usize,
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out: &mut Vec<Self>);
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}
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impl ReadRleData for u16
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{
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fn read_rle_data(b: &[u8],
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p: &mut usize,
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cmp: bool,
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len: usize,
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out: &mut Vec<Self>)
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{
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if cmp {
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let d = u16b(&b[*p..*p + 2]);
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*p += 2;
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for _ in 0..len {
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out.push(d);
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}
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} else {
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for _ in 0..len {
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let d = u16b(&b[*p..*p + 2]);
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*p += 2;
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out.push(d);
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}
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}
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}
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}
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impl ReadRleData for u8
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{
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fn read_rle_data(b: &[u8],
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p: &mut usize,
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cmp: bool,
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len: usize,
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out: &mut Vec<Self>)
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{
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if cmp {
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let d = b[*p];
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*p += 1;
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for _ in 0..len {
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out.push(d);
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}
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} else {
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for _ in 0..len {
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let d = b[*p];
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*p += 1;
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out.push(d);
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}
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}
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}
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}
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// Expand packed pixel data based on bit depth.
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fn expand_data(b: Vec<u8>, depth: Depth) -> ResultS<Vec<u8>>
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{
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let mut o = Vec::with_capacity(match depth {
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Depth::_4 => b.len() * 2,
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Depth::_2 => b.len() * 4,
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Depth::_1 => b.len() * 8,
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_ => bail!("invalid bit depth"),
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});
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for ch in b {
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match depth {
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Depth::_4 => {
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for i in (0..=1).rev() {
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o.push(ch >> (i * 4) & 0xF_u8);
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}
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}
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Depth::_2 => {
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for i in (0..=3).rev() {
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o.push(ch >> (i * 2) & 0x3_u8);
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}
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}
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Depth::_1 => {
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for i in (0..=7).rev() {
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o.push(ch >> i & 0x1_u8);
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}
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}
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_ => bail!("invalid bit depth"),
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}
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}
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Ok(o)
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}
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struct Header
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{
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pitch: usize,
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pack_t: PackType,
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depth: Depth,
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clut: Option<Vec<Color8>>,
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rle: bool,
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}
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c_enum! {
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enum Depth: u16
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{
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_1 = 1,
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_2 = 2,
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_4 = 4,
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_8 = 8,
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_16 = 16,
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_32 = 32,
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}
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}
|
||||
|
||||
c_enum! {
|
||||
enum PackType: u16
|
||||
{
|
||||
Default = 0,
|
||||
None = 1,
|
||||
NoPad = 2,
|
||||
Rle16 = 3,
|
||||
Rle32 = 4,
|
||||
}
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
|
|||
|
|
@ -0,0 +1,42 @@
|
|||
//! QuickDraw PICT color lookup tables.
|
||||
|
||||
use crate::durandal::{err::*, image::*};
|
||||
|
||||
/// Read a `ColorTable` structure.
|
||||
pub fn read(b: &[u8]) -> ResultS<(Vec<Color8>, usize)>
|
||||
{
|
||||
read_data! {
|
||||
endian: BIG, buf: b, size: 8, start: 0, data {
|
||||
let dev = u16[4];
|
||||
let num = u16[6] usize;
|
||||
}
|
||||
}
|
||||
|
||||
let dev = dev & 0x8000 != 0;
|
||||
let num = num + 1;
|
||||
|
||||
let mut p = 8;
|
||||
let mut clut = vec![Color8::new(0, 0, 0); num];
|
||||
|
||||
for i in 0..num {
|
||||
read_data! {
|
||||
endian: BIG, buf: b, size: 8, start: p, data {
|
||||
let n = u16[0] usize;
|
||||
let r = u8[2];
|
||||
let g = u8[4];
|
||||
let b = u8[6];
|
||||
}
|
||||
}
|
||||
|
||||
// with device mapping, we ignore the index entirely
|
||||
let n = if dev {i} else {n};
|
||||
|
||||
*ok!(clut.get_mut(n), "invalid index")? = Color8::new(r, g, b);
|
||||
|
||||
p += 8;
|
||||
}
|
||||
|
||||
Ok((clut, p))
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
//! QuickDraw PICT `PixMap` data.
|
||||
|
||||
pub mod area;
|
||||
pub mod head;
|
||||
pub mod ind;
|
||||
pub mod r5g5b5;
|
||||
pub mod rgb8;
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
//! QuickDraw PICT `PixMap` areas.
|
||||
|
||||
use crate::{durandal::{err::*, image::*}, marathon::pict::pm};
|
||||
|
||||
/// Process a `CopyBits` operation.
|
||||
pub fn read(im: Image8, b: &[u8], pack: bool, clip: bool) -> ResultS<Image8>
|
||||
{
|
||||
let p = if pack {0} else {4};
|
||||
let (b, hdr) = pm::head::read(&b[p..], pack, clip, &im)?;
|
||||
|
||||
match hdr.depth {
|
||||
pm::head::Depth::_1 |
|
||||
pm::head::Depth::_2 |
|
||||
pm::head::Depth::_4 |
|
||||
pm::head::Depth::_8 => pm::ind::read(im, b, hdr),
|
||||
pm::head::Depth::_16 => pm::r5g5b5::read(im, b, hdr),
|
||||
pm::head::Depth::_32 => pm::rgb8::read(im, b, hdr),
|
||||
}
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,90 @@
|
|||
//! QuickDraw PICT `PixMap` headers.
|
||||
|
||||
use crate::{durandal::{bin::*, err::*, image::*}, marathon::pict};
|
||||
use std::convert::TryFrom;
|
||||
|
||||
/// Reads a `PixMap` header.
|
||||
pub fn read<'a>(b: &'a [u8],
|
||||
pack: bool,
|
||||
clip: bool,
|
||||
im: &Image8) -> ResultS<(&'a [u8], Header)>
|
||||
{
|
||||
read_data! {
|
||||
endian: BIG, buf: b, size: 36, start: 0, data {
|
||||
let pt_fl = u16[0];
|
||||
let top = u16[2] usize;
|
||||
let left = u16[4] usize;
|
||||
let bottom = u16[6] usize;
|
||||
let right = u16[8] usize;
|
||||
let pack_t = u16[12] enum PackType;
|
||||
let depth = u16[28] enum Depth;
|
||||
}
|
||||
}
|
||||
|
||||
if pt_fl & 0x8000 == 0 {
|
||||
bail!("PICT1 not supported");
|
||||
}
|
||||
|
||||
if right - left != im.w() || bottom - top != im.h() {
|
||||
bail!("image bounds are incorrect");
|
||||
}
|
||||
|
||||
let mut p = 46;
|
||||
|
||||
// get CLUT if packed
|
||||
let clut = if pack {
|
||||
let (clut, sz) = pict::clut::read(&b[p..])?;
|
||||
p += sz;
|
||||
Some(clut)
|
||||
} else {
|
||||
None
|
||||
};
|
||||
|
||||
p += 18; // srcRect, dstRect, mode
|
||||
|
||||
if clip {
|
||||
p += usize::from(u16b(&b[p..])); // maskRgn
|
||||
}
|
||||
|
||||
let rle = pack_t == PackType::Default ||
|
||||
pack_t == PackType::Rle16 && depth == Depth::_16 ||
|
||||
pack_t == PackType::Rle32 && depth == Depth::_32;
|
||||
|
||||
let pitch = usize::from(pt_fl & 0x3FFF);
|
||||
|
||||
Ok((&b[p..], Header{pitch, pack_t, depth, clut, rle}))
|
||||
}
|
||||
|
||||
pub struct Header
|
||||
{
|
||||
pub pitch: usize,
|
||||
pub pack_t: PackType,
|
||||
pub depth: Depth,
|
||||
pub clut: Option<Vec<Color8>>,
|
||||
pub rle: bool,
|
||||
}
|
||||
|
||||
c_enum! {
|
||||
pub enum Depth: u16
|
||||
{
|
||||
_1 = 1,
|
||||
_2 = 2,
|
||||
_4 = 4,
|
||||
_8 = 8,
|
||||
_16 = 16,
|
||||
_32 = 32,
|
||||
}
|
||||
}
|
||||
|
||||
c_enum! {
|
||||
pub enum PackType: u16
|
||||
{
|
||||
Default = 0,
|
||||
None = 1,
|
||||
NoPad = 2,
|
||||
Rle16 = 3,
|
||||
Rle32 = 4,
|
||||
}
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,85 @@
|
|||
//! QuickDraw PICT indexed `PixMap`s.
|
||||
|
||||
use crate::{durandal::{err::*, image::*}, marathon::pict::{pm, rle}};
|
||||
|
||||
/// Reads an indexed `PixMap`.
|
||||
pub fn read(mut im: Image8,
|
||||
b: &[u8],
|
||||
hdr: pm::head::Header) -> ResultS<Image8>
|
||||
{
|
||||
let clut = ok!(hdr.clut, "no CLUT in indexed mode")?;
|
||||
let mut p = 0;
|
||||
|
||||
if hdr.pitch < 8 && hdr.depth == pm::head::Depth::_8 {
|
||||
// uncompressed 8-bit colormap indices
|
||||
for _ in 0..im.h() {
|
||||
for _ in 0..im.w() {
|
||||
let idx = usize::from(b[p]);
|
||||
|
||||
im.cr.push(ok!(clut.get(idx), "invalid index")?.clone());
|
||||
|
||||
p += 1;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(im)
|
||||
} else if hdr.rle {
|
||||
// RLE compressed 1, 2, 4 or 8 bit colormap indices
|
||||
for _ in 0..im.h() {
|
||||
let (d, pp) = rle::read::<u8>(&b[p..], hdr.pitch)?;
|
||||
|
||||
let d = if hdr.depth < pm::head::Depth::_8 {
|
||||
expand_data(d, hdr.depth)?
|
||||
} else {
|
||||
d
|
||||
};
|
||||
|
||||
p += pp;
|
||||
|
||||
for &idx in &d {
|
||||
im.cr
|
||||
.push(ok!(clut.get(usize::from(idx)), "invalid index")?.clone());
|
||||
}
|
||||
}
|
||||
|
||||
Ok(im)
|
||||
} else {
|
||||
bail!("invalid configuration")
|
||||
}
|
||||
}
|
||||
|
||||
/// Expand packed pixel data based on bit depth.
|
||||
pub fn expand_data(b: Vec<u8>, depth: pm::head::Depth) -> ResultS<Vec<u8>>
|
||||
{
|
||||
let mut o = Vec::with_capacity(match depth {
|
||||
pm::head::Depth::_4 => b.len() * 2,
|
||||
pm::head::Depth::_2 => b.len() * 4,
|
||||
pm::head::Depth::_1 => b.len() * 8,
|
||||
_ => bail!("invalid bit depth"),
|
||||
});
|
||||
|
||||
for ch in b {
|
||||
match depth {
|
||||
pm::head::Depth::_4 => {
|
||||
for i in (0..=1).rev() {
|
||||
o.push(ch >> (i * 4) & 0xF_u8);
|
||||
}
|
||||
}
|
||||
pm::head::Depth::_2 => {
|
||||
for i in (0..=3).rev() {
|
||||
o.push(ch >> (i * 2) & 0x3_u8);
|
||||
}
|
||||
}
|
||||
pm::head::Depth::_1 => {
|
||||
for i in (0..=7).rev() {
|
||||
o.push(ch >> i & 0x1_u8);
|
||||
}
|
||||
}
|
||||
_ => bail!("invalid bit depth"),
|
||||
}
|
||||
}
|
||||
|
||||
Ok(o)
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
//! QuickDraw PICT R5G5B5 `PixMap`s.
|
||||
|
||||
use crate::{durandal::{bin::u16b, err::*, image::*}, marathon::pict::{pm, rle}};
|
||||
|
||||
/// Reads a R5G5B5 `PixMap`.
|
||||
pub fn read(mut im: Image8,
|
||||
b: &[u8],
|
||||
hdr: pm::head::Header) -> ResultS<Image8>
|
||||
{
|
||||
let mut p = 0;
|
||||
|
||||
if hdr.pitch < 8 || hdr.pack_t == pm::head::PackType::None {
|
||||
// uncompressed R5G5B5
|
||||
for _ in 0..im.h() {
|
||||
for _ in 0..im.w() {
|
||||
let cr = u16b(&b[p..]);
|
||||
|
||||
im.cr.push(r5g5b5_to_rgb8(cr));
|
||||
p += 2;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(im)
|
||||
} else if hdr.rle {
|
||||
// RLE compressed R5G5B5
|
||||
for _ in 0..im.h() {
|
||||
let (d, pp) = rle::read::<u16>(&b[p..], hdr.pitch)?;
|
||||
|
||||
p += pp;
|
||||
|
||||
for &cr in &d {
|
||||
im.cr.push(r5g5b5_to_rgb8(cr));
|
||||
}
|
||||
}
|
||||
|
||||
Ok(im)
|
||||
} else {
|
||||
bail!("invalid configuration")
|
||||
}
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
//! QuickDraw PICT RGB8 `PixMap`s.
|
||||
|
||||
use crate::{durandal::{err::*, image::*}, marathon::pict::{pm, rle}};
|
||||
|
||||
/// Reads a RGB8 `PixMap`.
|
||||
pub fn read(mut im: Image8,
|
||||
b: &[u8],
|
||||
hdr: pm::head::Header) -> ResultS<Image8>
|
||||
{
|
||||
let mut p = 0;
|
||||
|
||||
if hdr.pitch < 8 ||
|
||||
hdr.pack_t == pm::head::PackType::None ||
|
||||
hdr.pack_t == pm::head::PackType::NoPad
|
||||
{
|
||||
// uncompressed RGB8 or XRGB8
|
||||
for _ in 0..im.h() {
|
||||
for _ in 0..im.w() {
|
||||
if hdr.pack_t != pm::head::PackType::NoPad {
|
||||
p += 1;
|
||||
}
|
||||
|
||||
read_data! {
|
||||
endian: BIG, buf: b, size: 3, start: p, data {
|
||||
let r = u8[0];
|
||||
let g = u8[1];
|
||||
let b = u8[2];
|
||||
}
|
||||
}
|
||||
|
||||
im.cr.push(Color8::new(r, g, b));
|
||||
|
||||
p += 3;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(im)
|
||||
} else if hdr.rle {
|
||||
// RLE compressed RGB8
|
||||
let pitch = hdr.pitch - im.w(); // remove padding byte from pitch
|
||||
for _ in 0..im.h() {
|
||||
let (d, pp) = rle::read::<u8>(&b[p..], pitch)?;
|
||||
|
||||
p += pp;
|
||||
|
||||
for x in 0..im.w() {
|
||||
let r = d[x + im.w()];
|
||||
let g = d[x + im.w() * 2];
|
||||
let b = d[x + im.w() * 3];
|
||||
im.cr.push(Color8::new(r, g, b));
|
||||
}
|
||||
}
|
||||
|
||||
Ok(im)
|
||||
} else {
|
||||
bail!("invalid configuration")
|
||||
}
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -0,0 +1,94 @@
|
|||
//! QuickDraw PICT format run length encoded data.
|
||||
|
||||
use crate::durandal::{bin::*, err::*};
|
||||
|
||||
/// Read run-length encoded data.
|
||||
pub fn read<T>(b: &[u8], pitch: usize) -> ResultS<(Vec<T>, usize)>
|
||||
where T: ReadRleData
|
||||
{
|
||||
let mut p = 0;
|
||||
let mut o = Vec::with_capacity(pitch);
|
||||
|
||||
let sz = if pitch > 250 {
|
||||
(usize::from(u16b(b)) + 2, p += 2).0
|
||||
} else {
|
||||
(usize::from(b[0]) + 1, p += 1).0
|
||||
};
|
||||
|
||||
while p < sz {
|
||||
let szf = b[p];
|
||||
let cmp = szf & 0x80 != 0;
|
||||
let len = usize::from(if cmp {!szf + 2} else {szf + 1});
|
||||
|
||||
p += 1;
|
||||
o.reserve(len);
|
||||
|
||||
T::read_rle_data(b, &mut p, cmp, len, &mut o);
|
||||
}
|
||||
|
||||
if o.len() == pitch {
|
||||
Ok((o, p))
|
||||
} else {
|
||||
Err(err_msg("incorrect size for compressed scanline"))
|
||||
}
|
||||
}
|
||||
|
||||
pub trait ReadRleData: Sized
|
||||
{
|
||||
// Read a sequence of packed RLE data.
|
||||
fn read_rle_data(b: &[u8],
|
||||
p: &mut usize,
|
||||
cmp: bool,
|
||||
len: usize,
|
||||
out: &mut Vec<Self>);
|
||||
}
|
||||
|
||||
impl ReadRleData for u16
|
||||
{
|
||||
fn read_rle_data(b: &[u8],
|
||||
p: &mut usize,
|
||||
cmp: bool,
|
||||
len: usize,
|
||||
out: &mut Vec<Self>)
|
||||
{
|
||||
if cmp {
|
||||
let d = u16b(&b[*p..*p + 2]);
|
||||
*p += 2;
|
||||
for _ in 0..len {
|
||||
out.push(d);
|
||||
}
|
||||
} else {
|
||||
for _ in 0..len {
|
||||
let d = u16b(&b[*p..*p + 2]);
|
||||
*p += 2;
|
||||
out.push(d);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl ReadRleData for u8
|
||||
{
|
||||
fn read_rle_data(b: &[u8],
|
||||
p: &mut usize,
|
||||
cmp: bool,
|
||||
len: usize,
|
||||
out: &mut Vec<Self>)
|
||||
{
|
||||
if cmp {
|
||||
let d = b[*p];
|
||||
*p += 1;
|
||||
for _ in 0..len {
|
||||
out.push(d);
|
||||
}
|
||||
} else {
|
||||
for _ in 0..len {
|
||||
let d = b[*p];
|
||||
*p += 1;
|
||||
out.push(d);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// EOF
|
||||
|
|
@ -8,15 +8,15 @@ fn get_clut_must_process()
|
|||
const INPUT: &[u8] = include_bytes!("data/pict/clut.in");
|
||||
const OUTPUT: [Color8; 256] = include!("data/pict/clut.out");
|
||||
|
||||
assert_eq!(pict::get_clut(INPUT).unwrap(), (OUTPUT.to_vec(), 2056));
|
||||
assert_eq!(pict::clut::read(INPUT).unwrap(), (OUTPUT.to_vec(), 2056));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn pict_must_not_process()
|
||||
{
|
||||
for inp in &RANDOM {
|
||||
assert!(pict::get_clut(inp).is_err());
|
||||
assert!(pict::load_pict(inp).is_err());
|
||||
assert!(pict::clut::read(inp).is_err());
|
||||
assert!(pict::read(inp).is_err());
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue