--- /dev/null
+use nihav_core::codecs::*;
+use nihav_core::io::byteio::*;
+use nihav_core::io::bitwriter::*;
+
+const TMRT_DELTA_TAB: [&[i16]; 3] = [
+ &[ 5, -7, 36, -36 ],
+ &[ 2, -3, 8, -8, 18, -18, 36, -36 ],
+ &[ 1, -1, 2, -3, 8, -8, 18, -18, 36, -36, 54, -54, 96, -96, 144, -144 ]
+];
+
+const FIRST_NODE: u8 = 255;
+const ERR_MAX: u32 = std::u32::MAX;
+
+#[derive(Clone, Copy, Default)]
+struct TrellisNode {
+ err: u32,
+ hpred: i16,
+ idx: u8,
+}
+
+struct TMRTEncoder {
+ stream: Option<NAStreamRef>,
+ pkt: Option<NAPacket>,
+ dbits: u8,
+ hscale: bool,
+ do_trellis: bool,
+ top_line: Vec<u8>,
+ trellis: Vec<TrellisNode>,
+ indices: Vec<u8>,
+}
+
+fn find_delta(cur_delta: i16, delta_tab: &[i16]) -> (i16, usize) {
+ let mut idx = 0;
+ let mut best_diff = 512;
+ let mut ndelta = delta_tab[0];
+ for (i, &delta) in delta_tab.iter().enumerate() {
+ let ddiff = (delta - cur_delta).abs();
+ if ddiff < best_diff {
+ idx = i;
+ best_diff = ddiff;
+ ndelta = delta;
+ }
+ }
+ (ndelta, idx)
+}
+
+impl TMRTEncoder {
+ fn new() -> Self {
+ Self {
+ stream: None,
+ pkt: None,
+ dbits: 4,
+ hscale: false,
+ do_trellis: false,
+ top_line: Vec::new(),
+ trellis: Vec::new(),
+ indices: Vec::new(),
+ }
+ }
+ fn encode_plane(&mut self, bw: &mut BitWriter, in_frm: &NAVideoBuffer<u8>, plane_no: usize) -> EncoderResult<()> {
+ let (width, height) = in_frm.get_dimensions(plane_no);
+
+ let stride = in_frm.get_stride(plane_no);
+ let offset = in_frm.get_offset(plane_no);
+ let src = in_frm.get_data();
+
+ let delta_tab = TMRT_DELTA_TAB[(self.dbits - 2) as usize];
+ self.top_line.clear();
+ self.top_line.resize(width, if plane_no == 0 { 0 } else { 0x80 });
+
+ let step = if self.hscale { 2 } else { 1 };
+ for line in src[offset..].chunks(stride).take(height) {
+ let mut hor_pred = 0;
+ for (&cur, pred) in line[..width].iter().zip(self.top_line.iter_mut()).step_by(step) {
+ let cur = i16::from(cur);
+ let cur_delta = cur - i16::from(*pred) - hor_pred;
+
+ let (ndelta, idx) = find_delta(cur_delta, delta_tab);
+
+ bw.write(idx as u32, self.dbits);
+ hor_pred += ndelta;
+ *pred = (i16::from(*pred) + hor_pred).max(0).min(255) as u8;
+ }
+ }
+
+ Ok(())
+ }
+
+ fn encode_plane_trellis(&mut self, bw: &mut BitWriter, in_frm: &NAVideoBuffer<u8>, plane_no: usize) -> EncoderResult<()> {
+ let (width, height) = in_frm.get_dimensions(plane_no);
+
+ let stride = in_frm.get_stride(plane_no);
+ let offset = in_frm.get_offset(plane_no);
+ let src = in_frm.get_data();
+
+ let delta_tab = TMRT_DELTA_TAB[(self.dbits - 2) as usize];
+ self.top_line.clear();
+ self.top_line.resize(width, if plane_no == 0 { 0 } else { 0x80 });
+
+ let trellis_size = delta_tab.len();
+ self.trellis.resize(trellis_size * (width + 1), TrellisNode::default());
+ self.indices.resize(width, 0);
+ for node in self.trellis[..trellis_size].iter_mut() {
+ node.idx = FIRST_NODE;
+ }
+
+ let step = if self.hscale { 2 } else { 1 };
+ for line in src[offset..].chunks(stride).take(height) {
+ let mut tsplit = trellis_size;
+ for (&cur, &pred) in line[..width].iter().zip(self.top_line.iter()).step_by(step) {
+ let (tprev, tcur) = self.trellis.split_at_mut(tsplit);
+ let hist = &tprev[tprev.len() - trellis_size..];
+
+ let pix_val = i32::from(cur);
+ let top_val = i16::from(pred);
+ for (dst, &delta) in tcur.iter_mut().zip(delta_tab.iter()) {
+ dst.err = ERR_MAX;
+ for (idx, src) in hist.iter().enumerate() {
+ if src.err == ERR_MAX {
+ continue;
+ }
+ let nval = i32::from((top_val + src.hpred + delta).max(0).min(255));
+ let new_err = src.err + (((nval - pix_val) * (nval - pix_val)) as u32);
+ if new_err < dst.err {
+ dst.err = new_err;
+ dst.idx = idx as u8;
+ dst.hpred = src.hpred + delta;
+ }
+ }
+ }
+
+ tsplit += trellis_size;
+ }
+
+ tsplit -= trellis_size;
+ let mut best_idx = 0;
+ let mut best_err = self.trellis[tsplit].err;
+
+ for (idx, node) in self.trellis[tsplit..].iter().take(trellis_size).enumerate() {
+ if node.err < best_err {
+ best_idx = idx as u8;
+ best_err = node.err;
+ }
+ }
+
+ let mut cur_idx = best_idx;
+ for dst in self.indices[..width / step].iter_mut().rev() {
+ *dst = cur_idx;
+ cur_idx = self.trellis[tsplit + (cur_idx as usize)].idx;
+ tsplit -= trellis_size;
+ }
+
+ let mut hor_pred = 0;
+ for (pred, &idx) in self.top_line.iter_mut().step_by(step).zip(self.indices.iter()) {
+ bw.write(u32::from(idx), self.dbits);
+ hor_pred += delta_tab[usize::from(idx)];
+ *pred = (i16::from(*pred) + hor_pred).max(0).min(255) as u8;
+ }
+ }
+
+ Ok(())
+ }
+}
+
+impl NAEncoder for TMRTEncoder {
+ fn negotiate_format(&self, encinfo: &EncodeParameters) -> EncoderResult<EncodeParameters> {
+ match encinfo.format {
+ NACodecTypeInfo::None => {
+ Ok(EncodeParameters {
+ format: NACodecTypeInfo::Video(NAVideoInfo::new(0, 0, true, YUV410_FORMAT)),
+ ..Default::default()
+ })
+ },
+ NACodecTypeInfo::Audio(_) => Err(EncoderError::FormatError),
+ NACodecTypeInfo::Video(vinfo) => {
+ let pix_fmt = YUV410_FORMAT;
+ let outinfo = NAVideoInfo::new((vinfo.width + 3) & !3, (vinfo.height + 3) & !3, false, pix_fmt);
+ let mut ofmt = *encinfo;
+ ofmt.format = NACodecTypeInfo::Video(outinfo);
+ Ok(ofmt)
+ }
+ }
+ }
+ fn init(&mut self, stream_id: u32, encinfo: EncodeParameters) -> EncoderResult<NAStreamRef> {
+ match encinfo.format {
+ NACodecTypeInfo::None => Err(EncoderError::FormatError),
+ NACodecTypeInfo::Audio(_) => Err(EncoderError::FormatError),
+ NACodecTypeInfo::Video(vinfo) => {
+ if vinfo.format != YUV410_FORMAT {
+ return Err(EncoderError::FormatError);
+ }
+ if ((vinfo.width | vinfo.height) & 3) != 0 {
+ return Err(EncoderError::FormatError);
+ }
+ if (vinfo.width | vinfo.height) >= (1 << 10) {
+ return Err(EncoderError::FormatError);
+ }
+
+ let out_info = NAVideoInfo::new(vinfo.width, vinfo.height, false, vinfo.format);
+ let info = NACodecInfo::new("truemotionrt", NACodecTypeInfo::Video(out_info), None);
+ let mut stream = NAStream::new(StreamType::Video, stream_id, info, encinfo.tb_num, encinfo.tb_den, 0);
+ stream.set_num(stream_id as usize);
+ let stream = stream.into_ref();
+
+ self.stream = Some(stream.clone());
+
+ Ok(stream)
+ },
+ }
+ }
+ fn encode(&mut self, frm: &NAFrame) -> EncoderResult<()> {
+ let buf = frm.get_buffer();
+ if let Some(ref vbuf) = buf.get_vbuf() {
+ let mut dbuf = Vec::with_capacity(4);
+ let mut gw = GrowableMemoryWriter::new_write(&mut dbuf);
+ let mut bw = ByteWriter::new(&mut gw);
+
+ bw.write_byte(0)?; // header size
+ bw.write_byte(17)?;
+ bw.write_byte(self.dbits)?;
+ bw.write_byte(5)?;
+ bw.write_byte(self.hscale as u8)?;
+ bw.write_byte(0)?; // pad
+ let (width, height) = vbuf.get_dimensions(0);
+ bw.write_u16le(height as u16)?;
+ bw.write_u16le(width as u16)?;
+ bw.write_u16le(0)?; // pad
+ bw.write_u32le(0)?; // full frame_size
+ bw.write_u16le(0)?; // pad
+
+ let hdr_size = bw.tell() as usize;
+
+ bw.write_u32le(0)?; // data size
+
+ let mut bw = BitWriter::new(dbuf, BitWriterMode::LE);
+ if !self.do_trellis {
+ for plane in 0..3 {
+ self.encode_plane(&mut bw, vbuf, plane)?;
+ }
+ } else {
+ for plane in 0..3 {
+ self.encode_plane_trellis(&mut bw, vbuf, plane)?;
+ }
+ }
+ dbuf = bw.end();
+
+ let frame_size = dbuf.len() as u32;
+ write_u32le(&mut dbuf[12..], frame_size)?;
+ write_u32le(&mut dbuf[hdr_size..], frame_size - (hdr_size as u32) - 4)?;
+
+ dbuf[0] = ((hdr_size | 0x80) as u8).rotate_right(3);
+ for i in (1..hdr_size).rev() {
+ dbuf[i] ^= dbuf[i + 1];
+ }
+
+ self.pkt = Some(NAPacket::new(self.stream.clone().unwrap(), frm.ts, true, dbuf));
+ Ok(())
+ } else {
+ Err(EncoderError::InvalidParameters)
+ }
+ }
+ fn get_packet(&mut self) -> EncoderResult<Option<NAPacket>> {
+ let mut npkt = None;
+ std::mem::swap(&mut self.pkt, &mut npkt);
+ Ok(npkt)
+ }
+ fn flush(&mut self) -> EncoderResult<()> {
+ Ok(())
+ }
+}
+
+const ENCODER_OPTS: &[NAOptionDefinition] = &[
+ NAOptionDefinition {
+ name: "bits", description: "Bits per delta",
+ opt_type: NAOptionDefinitionType::Int(Some(2), Some(4)) },
+ NAOptionDefinition {
+ name: "hscale", description: "Horizontal scaling mode",
+ opt_type: NAOptionDefinitionType::Bool },
+ NAOptionDefinition {
+ name: "trellis", description: "Trellis search for optimal deltas",
+ opt_type: NAOptionDefinitionType::Bool },
+];
+
+impl NAOptionHandler for TMRTEncoder {
+ fn get_supported_options(&self) -> &[NAOptionDefinition] { ENCODER_OPTS }
+ fn set_options(&mut self, options: &[NAOption]) {
+ for option in options.iter() {
+ for opt_def in ENCODER_OPTS.iter() {
+ if opt_def.check(option).is_ok() {
+ match option.name {
+ "bits" => {
+ if let NAValue::Int(val) = option.value {
+ self.dbits = val as u8;
+ }
+ },
+ "hscale" => {
+ if let NAValue::Bool(val) = option.value {
+ self.hscale = val;
+ }
+ },
+ "trellis" => {
+ if let NAValue::Bool(val) = option.value {
+ self.do_trellis = val;
+ }
+ },
+ _ => {},
+ };
+ }
+ }
+ }
+ }
+ fn query_option_value(&self, name: &str) -> Option<NAValue> {
+ match name {
+ "bits" => Some(NAValue::Int(i64::from(self.dbits))),
+ "hscale" => Some(NAValue::Bool(self.hscale)),
+ "trellis" => Some(NAValue::Bool(self.do_trellis)),
+ _ => None,
+ }
+ }
+}
+
+pub fn get_encoder() -> Box<dyn NAEncoder + Send> {
+ Box::new(TMRTEncoder::new())
+}
+
+#[cfg(test)]
+mod test {
+ use nihav_core::codecs::*;
+ use nihav_core::demuxers::*;
+ use nihav_core::muxers::*;
+ use crate::*;
+ use nihav_commonfmt::*;
+ use nihav_codec_support::test::enc_video::*;
+
+ fn encode_test(name: &'static str, enc_options: &[NAOption], hash: &[u32; 4]) {
+ let mut dmx_reg = RegisteredDemuxers::new();
+ generic_register_all_demuxers(&mut dmx_reg);
+ let mut dec_reg = RegisteredDecoders::new();
+ duck_register_all_decoders(&mut dec_reg);
+ let mut mux_reg = RegisteredMuxers::new();
+ generic_register_all_muxers(&mut mux_reg);
+ let mut enc_reg = RegisteredEncoders::new();
+ duck_register_all_encoders(&mut enc_reg);
+
+ // sample from private collection
+ let dec_config = DecoderTestParams {
+ demuxer: "avi",
+ in_name: "assets/Duck/tr20_low.avi",
+ stream_type: StreamType::Video,
+ limit: Some(1),
+ dmx_reg, dec_reg,
+ };
+ let enc_config = EncoderTestParams {
+ muxer: "avi",
+ enc_name: "truemotionrt",
+ out_name: name,
+ mux_reg, enc_reg,
+ };
+ let dst_vinfo = NAVideoInfo {
+ width: 0,
+ height: 0,
+ format: YUV410_FORMAT,
+ flipped: false,
+ bits: 9,
+ };
+ let enc_params = EncodeParameters {
+ format: NACodecTypeInfo::Video(dst_vinfo),
+ quality: 0,
+ bitrate: 0,
+ tb_num: 0,
+ tb_den: 0,
+ flags: 0,
+ };
+ //test_encoding_to_file(&dec_config, &enc_config, enc_params, enc_options);
+ test_encoding_md5(&dec_config, &enc_config, enc_params, enc_options, hash);
+ }
+ #[test]
+ fn test_truemotionrt_encoder_2bit() {
+ let enc_options = &[
+ NAOption { name: "bits", value: NAValue::Int(2) },
+ ];
+ encode_test("tmrt-2bit.avi", enc_options, &[0x2c2a5ae3, 0xde1646e4, 0xf76bb219, 0xd09602fa]);
+ }
+ #[test]
+ fn test_truemotionrt_encoder_3bit() {
+ let enc_options = &[
+ NAOption { name: "bits", value: NAValue::Int(3) },
+ ];
+ encode_test("tmrt-3bit.avi", enc_options, &[0x36cf8f48, 0x3e8ff2ce, 0x6f3822cf, 0xf7fbf19d]);
+ }
+ #[test]
+ fn test_truemotionrt_encoder_4bit() {
+ let enc_options = &[
+ NAOption { name: "bits", value: NAValue::Int(4) },
+ ];
+ encode_test("tmrt-4bit.avi", enc_options, &[0xa5a7fbe3, 0x7bac0b2b, 0x2af6f97f, 0xa65cd1fc]);
+ }
+ #[test]
+ fn test_truemotionrt_encoder_hscale() {
+ let enc_options = &[
+ NAOption { name: "bits", value: NAValue::Int(3) },
+ NAOption { name: "hscale", value: NAValue::Bool(true) },
+ ];
+ encode_test("tmrt-hscale.avi", enc_options, &[0xc17afa21, 0x5bdf49c9, 0x57997840, 0xfc2f17b6]);
+ }
+ #[test]
+ fn test_truemotionrt_encoder_trellis() {
+ let enc_options = &[
+ NAOption { name: "bits", value: NAValue::Int(3) },
+ NAOption { name: "hscale", value: NAValue::Bool(true) },
+ NAOption { name: "trellis", value: NAValue::Bool(true) },
+ ];
+ encode_test("tmrt-trellis.avi", enc_options, &[0x3586b450, 0x6ea1ed31, 0xe14c0c7d, 0x0886bc4f]);
+ }
+}
projects / nihav.git / commitdiff