--- /dev/null
+use nihav_core::io::byteio::{ByteReader,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)]
+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.max(0).min(255) as u8;
+ }
+ }
+}
+
+#[derive(Clone,Copy,Default)]
+struct ComponentInfo {
+ component_id: usize,
+ dc_table_id: usize,
+ ac_table_id: usize,
+}
+
+#[derive(Debug,PartialEq)]
+#[allow(dead_code)]
+enum JPEGType {
+ None,
+ Baseline,
+ Extended,
+ Progressive,
+ Lossless,
+ Differential,
+ DiffProgressive,
+ DiffLossless,
+ JPEGLS,
+}
+
+struct JPEGDecoder {
+ info: NACodecInfoRef,
+ quant: [[i16; 64]; 4],
+ qselect: [u8; MAX_CHROMATONS],
+ comp_id: [u8; MAX_CHROMATONS],
+ subsamp: [u8; MAX_CHROMATONS],
+ codebook: [[Option<Codebook<u8>>; 4]; 2],
+ width: usize,
+ height: usize,
+ depth: u8,
+ buf: Vec<u8>,
+}
+
+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: &[i16; 64]) -> DecoderResult<()> {
+ if ss == 0 {
+ blk[0] = read_dc(br, dc_cb)?;
+ blk[0] *= 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 * qmat[idx];
+ idx += 1;
+ }
+ Ok(())
+}
+
+impl JPEGDecoder {
+ fn new() -> Self {
+ let dummy_info = NACodecInfo::new_dummy();
+
+ Self {
+ info: dummy_info,
+ quant: [[0; 64]; 4],
+ qselect: [0; MAX_CHROMATONS],
+ subsamp: [0; MAX_CHROMATONS],
+ comp_id: [0; MAX_CHROMATONS],
+ codebook: [[None, None, None, None], [None, None, None, None]],
+ width: 0,
+ height: 0,
+ depth: 0,
+ buf: Vec::new(),
+ }
+ }
+ fn reset(&mut self) {
+ self.quant = [[0; 64]; 4];
+ self.codebook = [[None, None, None, None], [None, None, None, None]];
+ self.width = 0;
+ self.height = 0;
+ self.depth = 0;
+ }
+
+ fn parse_sof(&mut self, br: &mut ByteReader) -> DecoderResult<NABufferType> {
+ validate!(self.width == 0);
+
+ let len = br.read_u16be()? as usize;
+ validate!(len >= 11);
+ let p = br.read_byte()?;
+ validate!(p > 2);
+ if p != 8 {
+ return Err(DecoderError::NotImplemented);
+ }
+ let y = br.read_u16be()? as usize;
+ let x = br.read_u16be()? as usize;
+ validate!(x > 0);
+ if y == 0 {
+ return Err(DecoderError::NotImplemented);
+ }
+ self.depth = p;
+ self.width = x;
+ self.height = y;
+ let nf = br.read_byte()? as usize;
+ validate!(nf > 0);
+ validate!(len == 8 + nf * 3);
+ if nf > MAX_CHROMATONS {
+ return Err(DecoderError::NotImplemented);
+ }
+ let mut max_h = 0;
+ let mut max_v = 0;
+ for i in 0..nf {
+ let c = br.read_byte()?;
+ self.comp_id[i] = c;
+ let hv = br.read_byte()?;
+ let t = br.read_byte()?;
+ validate!(t < 4);
+ self.qselect[i] = t;
+ self.subsamp[i] = hv;
+ let hs = hv >> 4;
+ validate!(hs == 1 || hs == 2);
+ let vs = hv & 0xF;
+ validate!(vs == 1 || vs == 2);
+ max_h = max_h.max(hs);
+ max_v = max_v.max(vs);
+ }
+ let mut chromatons = [None; MAX_CHROMATONS];
+ for (i, chr) in chromatons[..nf].iter_mut().enumerate() {
+ let h_ss = match max_h / (self.subsamp[i] >> 4) {
+ 1 => 0,
+ 2 => 1,
+ _ => unreachable!(),
+ };
+ let v_ss = match max_v / (self.subsamp[i] & 0xF) {
+ 1 => 0,
+ 2 => 1,
+ _ => return Err(DecoderError::InvalidData),
+ };
+
+ *chr = Some(NAPixelChromaton {
+ h_ss, v_ss,
+ packed: false,
+ depth: p,
+ shift: 0,
+ comp_offs: i as u8,
+ next_elem: (p + 7) >> 3,
+ });
+ }
+ for i in 0..nf {
+ for j in i + 1..nf {
+ validate!(self.comp_id[i] != self.comp_id[j]);
+ }
+ }
+ let formaton = NAPixelFormaton {
+ model: ColorModel::YUV(YUVSubmodel::YUVJ),
+ components: nf as u8,
+ comp_info: chromatons,
+ elem_size: 0,
+ be: false,
+ alpha: nf == 2 || nf == 4,
+ palette: false,
+ };
+ let vinfo = NAVideoInfo::new(x, y, false, formaton);
+ Ok(alloc_video_buffer(vinfo, 4)?)
+ }
+
+ fn decode_scan(&mut self, src: &[u8], mut buf: NAVideoBufferRef<u8>, ci: &[ComponentInfo], ss: usize, se: usize) -> 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 (i, cinfo) in ci.iter().enumerate() {
+ 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!(); });
+ qmats[i] = &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 xstep = [0; MAX_CHROMATONS];
+ let mut ystep = [0; MAX_CHROMATONS];
+ let mut hstep = 8;
+ let mut vstep = 8;
+ for i in 0..num_components {
+ let hs = (self.subsamp[i] >> 4) as usize;
+ let vs = (self.subsamp[i] & 0xF) as usize;
+ hstep = hstep.max(hs * 8);
+ vstep = vstep.max(vs * 8);
+ nblks[i] = hs * vs;
+ xstep[i] = hs * 8;
+ ystep[i] = vs * 8;
+ }
+
+ let mut blocks;
+ for _y in (0..self.height).step_by(vstep) {
+ for x in 0..(self.width + hstep - 1) / hstep {
+ for i in 0..num_components {
+ 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);
+ }
+ match self.subsamp[i] {
+ 0x11 => {
+ put_block(&blocks[0], &mut frm.data[offs[i] + x * 8..], frm.stride[i]);
+ },
+ 0x21 => {
+ put_block(&blocks[0], &mut frm.data[offs[i] + x * 16..], frm.stride[i]);
+ put_block(&blocks[1], &mut frm.data[offs[i] + x * 16 + 8..], frm.stride[i]);
+ },
+ 0x12 => {
+ put_block(&blocks[0], &mut frm.data[offs[i] + x * 8..], frm.stride[i]);
+ put_block(&blocks[1], &mut frm.data[offs[i] + x * 8 + frm.stride[i] * 8..], frm.stride[i]);
+ },
+ 0x22 => {
+ for j in 0..4 {
+ put_block(&blocks[j], &mut frm.data[offs[i] + x * 16 + (j & 1) * 8 + (j >> 1) * 8 * frm.stride[i]..], frm.stride[i]);
+ }
+ },
+ _ => unreachable!(),
+ };
+ }
+ }
+ for i in 0..num_components {
+ offs[i] += frm.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 JPEGDecoder {
+ 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();
+ 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();
+ if src.len() <= 4 { return Err(DecoderError::ShortData); }
+
+ let mut bufinfo = NABufferType::None;
+ let mut mr = MemoryReader::new_read(&src);
+ let mut br = ByteReader::new(&mut mr);
+ let start_tag = br.read_u16be()?;
+ validate!(start_tag == 0xFFD8);
+
+ let mut jtype = JPEGType::None;
+ let mut arith = false;
+ self.reset();
+ loop {
+ let tag = br.read_u16be()?;
+ match tag {
+ 0xFFC0 => { //baseline DCT header
+ jtype = JPEGType::Baseline;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC1 => {
+ jtype = JPEGType::Extended;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC2 => {
+ jtype = JPEGType::Progressive;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC3 => {
+ jtype = JPEGType::Lossless;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC5 => {
+ jtype = JPEGType::Differential;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC6 => {
+ jtype = JPEGType::DiffProgressive;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC7 => {
+ jtype = JPEGType::DiffLossless;
+ arith = false;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC8 => return Err(DecoderError::NotImplemented),
+ 0xFFC9 => {
+ jtype = JPEGType::Extended;
+ arith = true;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFCA => {
+ jtype = JPEGType::Progressive;
+ arith = true;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFCB => {
+ jtype = JPEGType::Lossless;
+ arith = true;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFCD => {
+ jtype = JPEGType::Differential;
+ arith = true;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFCE => {
+ jtype = JPEGType::DiffProgressive;
+ arith = true;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFCF => {
+ jtype = JPEGType::DiffLossless;
+ arith = true;
+ bufinfo = self.parse_sof(&mut br)?;
+ },
+ 0xFFC4 => { //huff table
+ validate!(!arith);
+ let len = u64::from(br.read_u16be()?);
+ validate!(len > 2);
+ let end = br.tell() + len - 2;
+ let mut lens = [0; 16];
+ let mut syms = [0; 256];
+ while br.tell() < end {
+ let tctn = br.read_byte()? as usize;
+ let tclass = tctn >> 4;
+ validate!(tclass < 2);
+ let id = tctn & 0xF;
+ validate!(id < 4);
+ br.read_buf(&mut lens)?;
+ let mut tot_len = 0usize;
+ for &el in lens.iter() {
+ tot_len += usize::from(el);
+ }
+ validate!(tot_len > 0 && tot_len <= 256);
+ br.read_buf(&mut syms[..tot_len])?;
+ self.codebook[tclass][id] = Some(generate_cb(&lens, &syms[..tot_len])?);
+ }
+ validate!(br.tell() == end);
+ },
+ 0xFFCC => { // arith coding conditioning
+ return Err(DecoderError::NotImplemented);
+ }
+ 0xFFD0..=0xFFD7 => return Err(DecoderError::NotImplemented),
+ 0xFFD9 => break,
+ 0xFFDA => { //start of scan
+ let len = br.read_u16be()? as usize;
+ let ns = br.read_byte()? as usize;
+ validate!(len == ns * 2 + 6);
+ let mut ci = [ComponentInfo::default(); MAX_CHROMATONS];
+ for info in ci[..ns].iter_mut() {
+ let id = br.read_byte()?;
+ let mut found = false;
+ for (i, &c_id) in self.comp_id.iter().enumerate() {
+ if c_id == id {
+ info.component_id = i;
+ found = true;
+ break;
+ }
+ }
+ validate!(found);
+ let tdta = br.read_byte()? as usize;
+ let dc_id = tdta >> 4;
+ validate!(dc_id < 4);
+ if self.codebook[0][dc_id].is_none() {
+ validate!(dc_id < 2);
+ self.codebook[0][dc_id] = Some(build_default_cb(true, dc_id)?);
+ }
+ let ac_id = tdta & 0xF;
+ validate!(ac_id < 4);
+ if self.codebook[1][ac_id].is_none() {
+ validate!(ac_id < 2);
+ self.codebook[1][ac_id] = Some(build_default_cb(false, ac_id)?);
+ }
+ info.dc_table_id = dc_id;
+ info.ac_table_id = ac_id;
+ }
+ let ss = br.read_byte()? as usize;
+ let se = br.read_byte()? as usize;
+ let ahal = br.read_byte()?;
+ let ah = ahal >> 4;
+ let al = ahal & 0xF;
+ match jtype {
+ JPEGType::Baseline | JPEGType::Extended => {
+ if arith {
+ return Err(DecoderError::NotImplemented);
+ }
+ validate!(ss == 0 && se == 63);
+ validate!(ah == 0 && al == 0);
+ if let Some(buf) = bufinfo.get_vbuf() {
+ let max_size = src.len() - (br.tell() as usize);
+ self.buf.clear();
+ self.buf.reserve(max_size);
+ loop {
+ let b = br.read_byte()?;
+ if b != 0xFF {
+ self.buf.push(b);
+ } else {
+ let b2 = br.read_byte()?;
+ if b2 == 0 {
+ self.buf.push(b);
+ } else {
+ br.seek(std::io::SeekFrom::Current(-2))?;
+ break;
+ }
+ }
+ }
+
+ let mut data = Vec::new();
+ std::mem::swap(&mut self.buf, &mut data);
+ let ret = self.decode_scan(&data, buf, &ci[..ns], ss, se);
+ std::mem::swap(&mut self.buf, &mut data);
+ if let Err(err) = ret {
+ return Err(err);
+ }
+ } else { unreachable!(); }
+ },
+ JPEGType::Progressive => {
+ validate!(ss < 64 && se < 64 && se >= ss);
+ validate!(ah < 14 && al < 14);
+ return Err(DecoderError::NotImplemented);
+ },
+ JPEGType::Lossless => {
+ validate!(ss >= 1 && ss < 8 && se == 0);
+ validate!(ah == 0);
+ return Err(DecoderError::NotImplemented);
+ },
+ _ => return Err(DecoderError::NotImplemented),
+ };
+ let tag = br.peek_u16be()?;
+ validate!((tag >= 0xFFD0 && tag <= 0xFFD7) || (tag == 0xFFD9));
+ },
+ 0xFFDB => { //quant tables
+ let mut len = br.read_u16be()? as usize;
+ validate!(len >= 64 + 3);
+ len -= 2;
+ while len > 0 {
+ let pt = br.read_byte()?;
+ let precision = pt >> 4;
+ validate!(precision < 2);
+ let id = (pt & 0xF) as usize;
+ validate!(id < 4);
+ let qsize = if precision == 0 { 64 } else { 64 * 2 } + 1;
+ validate!(len >= qsize);
+ if precision == 0 {
+ for el in self.quant[id].iter_mut() {
+ *el = i16::from(br.read_byte()?);
+ }
+ } else {
+ for el in self.quant[id].iter_mut() {
+ *el = br.read_u16be()? as i16;
+ }
+ }
+ len -= qsize;
+ }
+ },
+ 0xFFDC => { //number of lines
+ return Err(DecoderError::NotImplemented);
+ },
+ 0xFFDD => {
+ let len = br.read_u16be()?;
+ validate!(len == 4);
+ let ri = br.read_u16be()?;
+ if ri != 0 {
+ println!("restart interval {}", ri);
+ return Err(DecoderError::NotImplemented);
+ }
+ },
+ 0xFFDE => return Err(DecoderError::NotImplemented),
+ 0xFFDF => return Err(DecoderError::NotImplemented),
+ 0xFFE0..=0xFFEF => { // application data
+ let len = br.read_u16be()? as usize;
+ validate!(len >= 2);
+ br.read_skip(len - 2)?;
+ },
+ 0xFFF0..=0xFFF6 => return Err(DecoderError::NotImplemented),
+ 0xFFF7 => {
+ //jtype = JPEGType::JPEGLS;
+ //arith = false;
+ return Err(DecoderError::NotImplemented);
+ },
+ 0xFFF8 => return Err(DecoderError::NotImplemented), //JPEG-LS parameters
+ 0xFFF9..=0xFFFD => return Err(DecoderError::NotImplemented),
+ 0xFFFE => { //comment
+ let len = br.read_u16be()? as usize;
+ validate!(len >= 2);
+ br.read_skip(len - 2)?;
+ },
+ 0xFF01 => return Err(DecoderError::NotImplemented),
+ 0xFF02..=0xFFBF => return Err(DecoderError::NotImplemented),
+ _ => return Err(DecoderError::InvalidData),
+ };
+ }
+ validate!(jtype != JPEGType::None);
+
+ if let NABufferType::None = bufinfo {
+ return Err(DecoderError::InvalidData);
+ }
+
+ 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 JPEGDecoder {
+ 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(JPEGDecoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::RegisteredDecoders;
+ use nihav_core::demuxers::RegisteredDemuxers;
+ use nihav_codec_support::test::dec_video::*;
+ use crate::generic_register_all_decoders;
+ use crate::generic_register_all_demuxers;
+ #[test]
+ fn test_jpeg() {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ generic_register_all_decoders(&mut dec_reg);
+ test_decoding("avi", "jpeg", "assets/Misc/mjpeg.avi", Some(1), &dmx_reg,
+ &dec_reg, ExpectedTestResult::MD5Frames(vec![
+ [0xe07f7128, 0x8c55eb5d, 0x03bfdee5, 0x358b24a4],
+ [0xd3ec3f92, 0x1664c56d, 0xfc049754, 0xf65165b9]]));
+ }
+}
+
+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
+ ]
+];
projects / nihav.git / commitdiff