-// Somewhat simplified JPEG decoder
-// TODO: move common JPEG decoding into codec-support
-
-use nihav_core::io::byteio::{ByteIO,MemoryReader};
-use nihav_core::io::bitreader::*;
-use nihav_core::io::codebook::*;
-use nihav_core::codecs::*;
-use nihav_codec_support::codecs::ZIGZAG;
-
-const W1: i32 = 2841;
-const W2: i32 = 2676;
-const W3: i32 = 2408;
-const W5: i32 = 1609;
-const W6: i32 = 1108;
-const W7: i32 = 565;
-const W8: i32 = 181;
-
-const ROW_SHIFT: u8 = 8;
-const COL_SHIFT: u8 = 14;
-
-#[allow(clippy::erasing_op)]
-fn idct_row(row: &mut [i16]) {
- let in0 = ((i32::from(row[0])) << 11) + (1 << (ROW_SHIFT - 1));
- let in1 = (i32::from(row[4])) << 11;
- let in2 = i32::from(row[6]);
- let in3 = i32::from(row[2]);
- let in4 = i32::from(row[1]);
- let in5 = i32::from(row[7]);
- let in6 = i32::from(row[5]);
- let in7 = i32::from(row[3]);
-
- let tmp = W7 * (in4 + in5);
- let a4 = tmp + (W1 - W7) * in4;
- let a5 = tmp - (W1 + W7) * in5;
-
- let tmp = W3 * (in6 + in7);
- let a6 = tmp - (W3 - W5) * in6;
- let a7 = tmp - (W3 + W5) * in7;
-
- let tmp = in0 + in1;
-
- let a0 = in0 - in1;
- let t1 = W6 * (in2 + in3);
- let a2 = t1 - (W2 + W6) * in2;
- let a3 = t1 + (W2 - W6) * in3;
- let b1 = a4 + a6;
-
- let b4 = a4 - a6;
- let t2 = a5 - a7;
- let b6 = a5 + a7;
- let b7 = tmp + a3;
- let b5 = tmp - a3;
- let b3 = a0 + a2;
- let b0 = a0 - a2;
- let b2 = (W8 * (b4 + t2) + 128) >> 8;
- let b4 = (W8 * (b4 - t2) + 128) >> 8;
-
- row[0] = ((b7 + b1) >> ROW_SHIFT) as i16;
- row[7] = ((b7 - b1) >> ROW_SHIFT) as i16;
- row[1] = ((b3 + b2) >> ROW_SHIFT) as i16;
- row[6] = ((b3 - b2) >> ROW_SHIFT) as i16;
- row[2] = ((b0 + b4) >> ROW_SHIFT) as i16;
- row[5] = ((b0 - b4) >> ROW_SHIFT) as i16;
- row[3] = ((b5 + b6) >> ROW_SHIFT) as i16;
- row[4] = ((b5 - b6) >> ROW_SHIFT) as i16;
-}
-
-#[allow(clippy::erasing_op)]
-#[allow(clippy::identity_op)]
-fn idct_col(blk: &mut [i16; 64], off: usize) {
- let in0 = ((i32::from(blk[off + 0*8])) << 8) + (1 << (COL_SHIFT - 1));
- let in1 = (i32::from(blk[off + 4*8])) << 8;
- let in2 = i32::from(blk[off + 6*8]);
- let in3 = i32::from(blk[off + 2*8]);
- let in4 = i32::from(blk[off + 1*8]);
- let in5 = i32::from(blk[off + 7*8]);
- let in6 = i32::from(blk[off + 5*8]);
- let in7 = i32::from(blk[off + 3*8]);
-
- let tmp = W7 * (in4 + in5);
- let a4 = (tmp + (W1 - W7) * in4) >> 3;
- let a5 = (tmp - (W1 + W7) * in5) >> 3;
-
- let tmp = W3 * (in6 + in7);
- let a6 = (tmp - (W3 - W5) * in6) >> 3;
- let a7 = (tmp - (W3 + W5) * in7) >> 3;
-
- let tmp = in0 + in1;
-
- let a0 = in0 - in1;
- let t1 = W6 * (in2 + in3);
- let a2 = (t1 - (W2 + W6) * in2) >> 3;
- let a3 = (t1 + (W2 - W6) * in3) >> 3;
- let b1 = a4 + a6;
-
- let b4 = a4 - a6;
- let t2 = a5 - a7;
- let b6 = a5 + a7;
- let b7 = tmp + a3;
- let b5 = tmp - a3;
- let b3 = a0 + a2;
- let b0 = a0 - a2;
- let b2 = (W8 * (b4 + t2) + 128) >> 8;
- let b4 = (W8 * (b4 - t2) + 128) >> 8;
-
- blk[off + 0*8] = ((b7 + b1) >> COL_SHIFT) as i16;
- blk[off + 7*8] = ((b7 - b1) >> COL_SHIFT) as i16;
- blk[off + 1*8] = ((b3 + b2) >> COL_SHIFT) as i16;
- blk[off + 6*8] = ((b3 - b2) >> COL_SHIFT) as i16;
- blk[off + 2*8] = ((b0 + b4) >> COL_SHIFT) as i16;
- blk[off + 5*8] = ((b0 - b4) >> COL_SHIFT) as i16;
- blk[off + 3*8] = ((b5 + b6) >> COL_SHIFT) as i16;
- blk[off + 4*8] = ((b5 - b6) >> COL_SHIFT) as i16;
-}
-
-fn idct(blk: &mut [i16; 64]) {
- for i in 0..8 { idct_row(&mut blk[i*8..(i+1)*8]); }
- for i in 0..8 { idct_col(blk, i); }
-}
-
-fn put_block(blk: &[i16; 64], dst: &mut [u8], stride: usize) {
- for (drow, srow) in dst.chunks_mut(stride).zip(blk.chunks(8)) {
- for (del, &pix) in drow.iter_mut().zip(srow.iter()) {
- *del = pix.clamp(0, 255) as u8;
- }
- }
-}
-
-#[derive(Clone,Copy,Default)]
-struct ComponentInfo {
- component_id: usize,
- dc_table_id: usize,
- ac_table_id: usize,
- plane: usize,
-}
-
-struct MoviePakDecoder {
- info: NACodecInfoRef,
- quant: [[u8; 64]; 4],
- qselect: [u8; MAX_CHROMATONS],
- subsamp: [u8; MAX_CHROMATONS],
- codebook: [[Option<Codebook<u8>>; 4]; 2],
- width: usize,
- height: usize,
- ilaced: bool,
-}
-
-fn read_dc(br: &mut BitReader, cb: &Codebook<u8>) -> DecoderResult<i16> {
- let cat = br.read_cb(cb)?;
- if cat == 0 {
- Ok(0)
- } else {
- validate!(cat < 12);
- let add_bits = br.read(cat)? as i16;
- let pivot = 1 << (cat - 1);
- if add_bits < pivot {
- Ok(add_bits + 1 - pivot * 2)
- } else {
- Ok(add_bits)
- }
- }
-}
-
-fn read_ac(br: &mut BitReader, cb: &Codebook<u8>) -> DecoderResult<(usize, i16)> {
- let val = br.read_cb(cb)?;
- let run = usize::from(val >> 4);
- let cat = val & 0xF;
- let level = if cat != 0 {
- validate!(cat < 11);
- let add_bits = br.read(cat)? as i16;
- let pivot = 1 << (cat - 1);
- if add_bits < pivot {
- add_bits + 1 - pivot * 2
- } else {
- add_bits
- }
- } else {
- validate!(run == 0 || run == 15);
- 0
- };
- Ok((run, level))
-}
-
-fn read_block(br: &mut BitReader, blk: &mut [i16; 64], dc_cb: &Codebook<u8>, ac_cb: &Codebook<u8>, ss: usize, se: usize, qmat: &[u8; 64]) -> DecoderResult<()> {
- if ss == 0 {
- blk[0] = read_dc(br, dc_cb)?;
- blk[0] *= i16::from(qmat[0]);
- }
- let mut idx = 1;
- while idx <= se {
- let (run, level) = read_ac(br, ac_cb)?;
- if run == 0 && level == 0 {
- break;
- }
- idx += run;
- validate!(idx < 64);
- blk[ZIGZAG[idx]] = level * i16::from(qmat[idx]);
- idx += 1;
- }
- Ok(())
-}
-
-impl MoviePakDecoder {
- fn new() -> Self {
- let dummy_info = NACodecInfo::new_dummy();
-
- Self {
- info: dummy_info,
- quant: [[0; 64]; 4],
- qselect: [0, 1, 1, 0, 0],
- subsamp: [0x21, 0x11, 0x11, 0, 0],
- codebook: [[None, None, None, None], [None, None, None, None]],
- width: 0,
- height: 0,
- ilaced: false,
- }
- }
-
- fn decode_scan(&mut self, src: &[u8], mut buf: NAVideoBufferRef<u8>, ci: &[ComponentInfo], ss: usize, se: usize, field2: bool) -> DecoderResult<usize> {
- let num_components = ci.len();
- let mut last_dc = [1024; MAX_CHROMATONS];
- let mut dc_cbs = Vec::with_capacity(num_components);
- let mut ac_cbs = Vec::with_capacity(num_components);
- let mut qmats = [&self.quant[0]; MAX_CHROMATONS];
- for (qmat, cinfo) in qmats.iter_mut().zip(ci.iter()) {
- dc_cbs.push(if let Some(ref cb) = self.codebook[0][cinfo.dc_table_id] {
- cb
- } else { unreachable!(); });
- ac_cbs.push(if let Some(ref cb) = self.codebook[1][cinfo.ac_table_id] {
- cb
- } else { unreachable!(); });
- *qmat = &self.quant[self.qselect[cinfo.component_id] as usize];
- }
-
- let frm = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap();
-
- let mut br = BitReader::new(src, BitReaderMode::BE);
-
- let mut offs = frm.offset;
- let mut nblks = [0; MAX_CHROMATONS];
- let mut ystep = [0; MAX_CHROMATONS];
- let mut hstep = 8;
- let mut vstep = 8;
- for (i, &subsamp) in self.subsamp.iter().take(num_components).enumerate() {
- let hs = (subsamp >> 4) as usize;
- let vs = (subsamp & 0xF) as usize;
- hstep = hstep.max(hs * 8);
- vstep = vstep.max(vs * 8);
- nblks[i] = hs * vs;
- ystep[i] = vs * 8;
- }
-
- let mut blocks;
- let height = if !self.ilaced { self.height } else { self.height / 2 };
- let mut stride = frm.stride;
- if self.ilaced {
- for (strd, off) in stride.iter_mut().zip(offs.iter_mut()) {
- if field2 {
- *off += *strd;
- }
- *strd <<= 1;
- }
- }
- for _y in (0..height).step_by(vstep) {
- for x in 0..(self.width + hstep - 1) / hstep {
- for (i, comp) in ci.iter().enumerate() {
- blocks = [[0; 64]; 4];
- for blk in blocks[..nblks[i]].iter_mut() {
- read_block(&mut br, blk, dc_cbs[i], ac_cbs[i], ss, se, qmats[i])?;
- blk[0] += last_dc[i];
- last_dc[i] = blk[0];
- idct(blk);
- }
- let cstride = stride[comp.plane];
- let coff = offs[comp.plane];
- match self.subsamp[i] {
- 0x11 => {
- put_block(&blocks[0], &mut frm.data[coff + x * 8..], cstride);
- },
- 0x21 => {
- put_block(&blocks[0], &mut frm.data[coff + x * 16..], cstride);
- put_block(&blocks[1], &mut frm.data[coff + x * 16 + 8..], cstride);
- },
- 0x12 => {
- put_block(&blocks[0], &mut frm.data[coff + x * 8..], cstride);
- put_block(&blocks[1], &mut frm.data[coff + x * 8 + cstride * 8..], cstride);
- },
- 0x22 => {
- for (j, blk) in blocks.iter().take(4).enumerate() {
- put_block(blk, &mut frm.data[coff + x * 16 + (j & 1) * 8 + (j >> 1) * 8 * cstride..], cstride);
- }
- },
- _ => unreachable!(),
- };
- }
- }
- for i in 0..num_components {
- offs[i] += stride[i] * ystep[i];
- }
- }
-
- Ok((br.tell() + 7) / 8)
- }
-}
-
-struct HuffDescReader<'a> {
- codes: &'a [u16],
- bits: &'a [u8],
- syms: &'a [u8],
-}
-
-impl<'a> CodebookDescReader<u8> for HuffDescReader<'a> {
- fn bits(&mut self, idx: usize) -> u8 { self.bits[idx] }
- fn code(&mut self, idx: usize) -> u32 { u32::from(self.codes[idx]) }
- fn sym (&mut self, idx: usize) -> u8 { self.syms[idx] }
- fn len(&mut self) -> usize { self.syms.len() }
-}
-
-fn generate_cb(lens: &[u8; 16], syms: &[u8]) -> DecoderResult<Codebook<u8>> {
- let mut codes = [0; 256];
- let mut bits = [0; 256];
-
- let mut iter = bits.iter_mut();
- for (i, &len) in lens.iter().enumerate() {
- for _ in 0..len {
- *iter.next().unwrap() = (i + 1) as u8;
- }
- }
- let mut code = 0;
- let mut si = bits[0];
- let mut idx = 0;
- while idx < syms.len() {
- while idx < syms.len() && bits[idx] == si {
- codes[idx] = code;
- code += 1;
- idx += 1;
- }
- while idx < syms.len() && bits[idx] != si {
- code <<= 1;
- si += 1;
- }
- }
-
- let mut cbr = HuffDescReader { codes: &codes, bits: &bits, syms };
- Ok(Codebook::new(&mut cbr, CodebookMode::MSB)?)
-}
-
-fn build_default_cb(dc: bool, idx: usize) -> DecoderResult<Codebook<u8>> {
- if dc {
- generate_cb(&DC_LENS[idx], &DC_SYMS)
- } else {
- generate_cb(&AC_LENS[idx], AC_SYMS[idx])
- }
-}
-
-impl NADecoder for MoviePakDecoder {
- fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
- if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
- let w = vinfo.get_width();
- let h = vinfo.get_height();
- self.width = w;
- self.height = h;
- let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, YUV420_FORMAT));
- self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
- Ok(())
- } else {
- Err(DecoderError::InvalidData)
- }
- }
- fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
- let src = pkt.get_buffer();
- let mut br = MemoryReader::new_read(&src);
- let width = usize::from(br.read_u16be()?);
- let height = usize::from(br.read_u16be()?);
- validate!(width == self.width && height == self.height);
- let _field1_size = br.read_u32be()? as usize;
- let field2_size = br.read_u32be()? as usize;
- if field2_size != 0 {
- return Err(DecoderError::NotImplemented);
- }
- br.read_buf(&mut self.quant[0])?;
- br.read_buf(&mut self.quant[1])?;
-
- let formaton = NAPixelFormaton {
- model: ColorModel::YUV(YUVSubmodel::YUVJ),
- components: 3,
- comp_info: [
- Some(NAPixelChromaton {
- h_ss: 0, v_ss: 0,
- packed: false,
- depth: 8,
- shift: 0,
- comp_offs: 0,
- next_elem: 1,
- }),
- Some(NAPixelChromaton {
- h_ss: 1, v_ss: 0,
- packed: false,
- depth: 8,
- shift: 0,
- comp_offs: 1,
- next_elem: 1,
- }),
- Some(NAPixelChromaton {
- h_ss: 1, v_ss: 0,
- packed: false,
- depth: 8,
- shift: 0,
- comp_offs: 2,
- next_elem: 1,
- }),
- None,
- None
- ],
- elem_size: 0,
- be: false,
- alpha: false,
- palette: false,
- };
- let vinfo = NAVideoInfo::new(self.width, self.height, false, formaton);
- let bufinfo = alloc_video_buffer(vinfo, 4)?;
-
- for (dc_id, dc_cb) in self.codebook[0].iter_mut().enumerate().take(2) {
- if dc_cb.is_none() {
- validate!(dc_id < 2);
- *dc_cb = Some(build_default_cb(true, dc_id)?);
- }
- }
- for (ac_id, ac_cb) in self.codebook[1].iter_mut().enumerate().take(2) {
- if ac_cb.is_none() {
- validate!(ac_id < 2);
- *ac_cb = Some(build_default_cb(false, ac_id)?);
- }
- }
-
- if let Some(buf) = bufinfo.get_vbuf() {
- let ci = [
- ComponentInfo { component_id: 1, dc_table_id: 0, ac_table_id: 0, plane: 0 },
- ComponentInfo { component_id: 2, dc_table_id: 1, ac_table_id: 1, plane: 1 },
- ComponentInfo { component_id: 3, dc_table_id: 1, ac_table_id: 1, plane: 2 },
- ];
- self.decode_scan(&src[br.tell() as usize..], buf, &ci, 0, 63, false)?;
- } else { unreachable!(); }
-
- let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
- frm.set_keyframe(true);
- frm.set_frame_type(FrameType::I);
- Ok(frm.into_ref())
- }
- fn flush(&mut self) {
- }
-}
-
-impl NAOptionHandler for MoviePakDecoder {
- fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
- fn set_options(&mut self, _options: &[NAOption]) { }
- fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
-}
-
-pub fn get_decoder() -> Box<dyn NADecoder + Send> {
- Box::new(MoviePakDecoder::new())
-}
-
-#[cfg(test)]
-mod test {
- use nihav_core::codecs::RegisteredDecoders;
- use nihav_core::demuxers::RegisteredDemuxers;
- use nihav_codec_support::test::dec_video::*;
- use crate::misc_register_all_decoders;
- use nihav_commonfmt::generic_register_all_demuxers;
- #[test]
- fn test_moviepak() {
- let mut dmx_reg = RegisteredDemuxers::new();
- generic_register_all_demuxers(&mut dmx_reg);
- let mut dec_reg = RegisteredDecoders::new();
- misc_register_all_decoders(&mut dec_reg);
- // sample from Mac Magazin and MacEasy Magazine CD Issue 34
- test_decoding("mov-macbin", "moviepak", "assets/Misc/The Toaster Part 1.movie", Some(20), &dmx_reg,
- &dec_reg, ExpectedTestResult::MD5Frames(vec![
- [0xe0ac2fde, 0x5dfc33c6, 0xf1725124, 0x79f9495e],
- [0xcfc10706, 0xb893fb0a, 0xfd365ac0, 0xff29b6dc],
- [0x43e46078, 0x013c7f5c, 0xf222761f, 0x1febc4ab]]));
- }
-}
-
-const DC_LENS: [[u8; 16]; 2] = [
- [ 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 ],
- [ 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 ]
-];
-const DC_SYMS: [u8; 12] = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ];
-const AC_LENS: [[u8; 16]; 2] = [
- [ 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 125 ],
- [ 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 119 ]
-];
-const AC_SYMS: [&[u8]; 2] = [
- &[
- 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
- 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
- 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
- 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
- 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
- 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
- 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
- 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
- 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
- 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
- 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
- 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
- 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
- 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
- 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
- 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
- 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
- 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
- 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
- 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
- 0xf9, 0xfa
- ],
- &[
- 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21,
- 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
- 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
- 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
- 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34,
- 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
- 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38,
- 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
- 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
- 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
- 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
- 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
- 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
- 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
- 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4,
- 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
- 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
- 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
- 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
- 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
- 0xf9, 0xfa
- ]
-];
+// Somewhat simplified JPEG decoder
+
+use nihav_core::io::byteio::{ByteIO,MemoryReader};
+use nihav_core::codecs::*;
+use nihav_codec_support::codecs::jpeg::*;
+
+struct MoviePakDecoder {
+ info: NACodecInfoRef,
+ jpeg: JPEGDecoder,
+}
+
+impl MoviePakDecoder {
+ fn new() -> Self {
+ let mut jpeg = JPEGDecoder::new();
+ jpeg.cb = JCodebooks::default_jpeg_codebooks();
+ jpeg.subsamp = [0x21, 0x11, 0x11, 0, 0];
+ jpeg.max_h = 2;
+ jpeg.max_v = 1;
+
+ Self {
+ info: NACodecInfo::new_dummy(),
+ jpeg,
+ }
+ }
+}
+
+impl NADecoder for MoviePakDecoder {
+ fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
+ if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
+ let w = vinfo.get_width();
+ let h = vinfo.get_height();
+ self.jpeg.width = w;
+ self.jpeg.height = h;
+ let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(w, h, false, YUV420_FORMAT));
+ self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
+ Ok(())
+ } else {
+ Err(DecoderError::InvalidData)
+ }
+ }
+ fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
+ let src = pkt.get_buffer();
+ let mut br = MemoryReader::new_read(&src);
+ let width = usize::from(br.read_u16be()?);
+ let height = usize::from(br.read_u16be()?);
+ validate!(width > 0 && height > 0);
+ self.jpeg.width = width;
+ self.jpeg.height = height;
+ let _field1_size = br.read_u32be()? as usize;
+ let field2_size = br.read_u32be()? as usize;
+ if field2_size != 0 {
+ return Err(DecoderError::NotImplemented);
+ }
+ for el in self.jpeg.quant[0].iter_mut() {
+ *el = i16::from(br.read_byte()?);
+ }
+ for el in self.jpeg.quant[1].iter_mut() {
+ *el = i16::from(br.read_byte()?);
+ }
+
+ let formaton = NAPixelFormaton {
+ model: ColorModel::YUV(YUVSubmodel::YUVJ),
+ components: 3,
+ comp_info: [
+ Some(NAPixelChromaton {
+ h_ss: 0, v_ss: 0,
+ packed: false,
+ depth: 8,
+ shift: 0,
+ comp_offs: 0,
+ next_elem: 1,
+ }),
+ Some(NAPixelChromaton {
+ h_ss: 1, v_ss: 0,
+ packed: false,
+ depth: 8,
+ shift: 0,
+ comp_offs: 1,
+ next_elem: 1,
+ }),
+ Some(NAPixelChromaton {
+ h_ss: 1, v_ss: 0,
+ packed: false,
+ depth: 8,
+ shift: 0,
+ comp_offs: 2,
+ next_elem: 1,
+ }),
+ None,
+ None
+ ],
+ elem_size: 0,
+ be: false,
+ alpha: false,
+ palette: false,
+ };
+ let vinfo = NAVideoInfo::new(self.jpeg.width, self.jpeg.height, false, formaton);
+ let bufinfo = alloc_video_buffer(vinfo, 4)?;
+
+ if let Some(buf) = bufinfo.get_vbuf() {
+ let ci = [
+ ComponentInfo { component_id: 0, dc_table_id: 0, ac_table_id: 0 },
+ ComponentInfo { component_id: 1, dc_table_id: 1, ac_table_id: 1 },
+ ComponentInfo { component_id: 2, dc_table_id: 1, ac_table_id: 1 },
+ ];
+ self.jpeg.decode_image(JPEGType::Baseline, &src[br.tell() as usize..], None, buf, &ci)?;
+ } else { unreachable!(); }
+
+ let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), bufinfo);
+ frm.set_keyframe(true);
+ frm.set_frame_type(FrameType::I);
+ Ok(frm.into_ref())
+ }
+ fn flush(&mut self) {
+ }
+}
+
+impl NAOptionHandler for MoviePakDecoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
+ fn set_options(&mut self, _options: &[NAOption]) { }
+ fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
+}
+
+pub fn get_decoder() -> Box<dyn NADecoder + Send> {
+ Box::new(MoviePakDecoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::RegisteredDecoders;
+ use nihav_core::demuxers::RegisteredDemuxers;
+ use nihav_codec_support::test::dec_video::*;
+ use crate::misc_register_all_decoders;
+ use nihav_commonfmt::generic_register_all_demuxers;
+ #[test]
+ fn test_moviepak() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ misc_register_all_decoders(&mut dec_reg);
+ // sample from Mac Magazin and MacEasy Magazine CD Issue 34
+ test_decoding("mov-macbin", "moviepak", "assets/Misc/The Toaster Part 1.movie", Some(20), &dmx_reg,
+ &dec_reg, ExpectedTestResult::MD5Frames(vec![
+ [0x35ed5acb, 0xfef01d75, 0x0a6af750, 0x8c22ca1d],
+ [0x0f66a11b, 0x0b63d153, 0xa2fd5898, 0x7a8057d3],
+ [0xe0354509, 0xe394c475, 0x1833fda5, 0x8f0e3568]]));
+ }
+}
projects / nihav.git / commitdiff