| 1 | use nihav_core::codecs::*; |
| 2 | |
| 3 | struct RawDecoder { |
| 4 | info: NACodecInfoRef, |
| 5 | } |
| 6 | |
| 7 | impl RawDecoder { |
| 8 | fn new() -> Self { |
| 9 | Self { |
| 10 | info: NACodecInfo::new_dummy(), |
| 11 | } |
| 12 | } |
| 13 | } |
| 14 | |
| 15 | impl NADecoder for RawDecoder { |
| 16 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { |
| 17 | if let NACodecTypeInfo::Video(_vinfo) = info.get_properties() { |
| 18 | self.info = info.clone(); |
| 19 | Ok(()) |
| 20 | } else { |
| 21 | Err(DecoderError::InvalidData) |
| 22 | } |
| 23 | } |
| 24 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { |
| 25 | if let NACodecTypeInfo::Video(ref vinfo) = self.info.get_properties() { |
| 26 | let src = pkt.get_buffer(); |
| 27 | let width = vinfo.width; |
| 28 | let height = vinfo.height; |
| 29 | let ncomp = vinfo.format.components as usize; |
| 30 | let buf = if vinfo.format.is_unpacked() && vinfo.format.get_max_depth() == 8 { |
| 31 | let mut offs = vec![0; ncomp]; |
| 32 | let mut strides = Vec::with_capacity(ncomp); |
| 33 | let mut sizes = Vec::with_capacity(ncomp); |
| 34 | for chr in vinfo.format.comp_info[..ncomp].iter() { |
| 35 | if let Some(chromaton) = chr { |
| 36 | let stride = chromaton.get_linesize(width); |
| 37 | let size = stride * chromaton.get_height(height); |
| 38 | sizes.push(size); |
| 39 | strides.push(stride); |
| 40 | } else { |
| 41 | return Err(DecoderError::InvalidData); |
| 42 | } |
| 43 | } |
| 44 | let mut off = 0; |
| 45 | for i in 0..ncomp { |
| 46 | for (cno, chr) in vinfo.format.comp_info[..ncomp].iter().enumerate() { |
| 47 | if let Some(chromaton) = chr { |
| 48 | let comp_off = chromaton.comp_offs as usize; |
| 49 | validate!(comp_off < ncomp); |
| 50 | if comp_off != i { |
| 51 | continue; |
| 52 | } |
| 53 | offs[cno] = off; |
| 54 | off += sizes[i]; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | validate!(off == src.len()); |
| 59 | |
| 60 | NABufferType::Video(NAVideoBuffer::from_raw_parts(*vinfo, src, offs, strides).into_ref()) |
| 61 | } else { |
| 62 | let esize = vinfo.format.elem_size as usize; |
| 63 | let ychr = vinfo.format.get_chromaton(0).unwrap(); |
| 64 | let ystep = if ychr.next_elem != 0 { ychr.next_elem as usize } else { esize }; |
| 65 | let stride = (width * esize + ystep - 1) / ystep; |
| 66 | let offs = vec![0]; |
| 67 | let strides = vec![stride]; |
| 68 | NABufferType::VideoPacked(NAVideoBuffer::from_raw_parts(*vinfo, src, offs, strides).into_ref()) |
| 69 | }; |
| 70 | |
| 71 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buf); |
| 72 | frm.set_keyframe(true); |
| 73 | frm.set_frame_type(FrameType::I); |
| 74 | Ok(frm.into_ref()) |
| 75 | } else { |
| 76 | Err(DecoderError::Bug) |
| 77 | } |
| 78 | } |
| 79 | fn flush(&mut self) {} |
| 80 | } |
| 81 | |
| 82 | |
| 83 | impl NAOptionHandler for RawDecoder { |
| 84 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } |
| 85 | fn set_options(&mut self, _options: &[NAOption]) { } |
| 86 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } |
| 87 | } |
| 88 | |
| 89 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { |
| 90 | Box::new(RawDecoder::new()) |
| 91 | } |
| 92 | |
| 93 | #[cfg(test)] |
| 94 | mod test { |
| 95 | use nihav_core::codecs::RegisteredDecoders; |
| 96 | use nihav_core::demuxers::RegisteredDemuxers; |
| 97 | use nihav_codec_support::test::dec_video::*; |
| 98 | use crate::generic_register_all_decoders; |
| 99 | use crate::generic_register_all_demuxers; |
| 100 | #[test] |
| 101 | fn test_rawvideo() { |
| 102 | let mut dmx_reg = RegisteredDemuxers::new(); |
| 103 | generic_register_all_demuxers(&mut dmx_reg); |
| 104 | let mut dec_reg = RegisteredDecoders::new(); |
| 105 | generic_register_all_decoders(&mut dec_reg); |
| 106 | test_decoding("yuv4mpeg", "rawvideo", "assets/Misc/test.y4m", None, &dmx_reg, |
| 107 | &dec_reg, ExpectedTestResult::MD5Frames(vec![ |
| 108 | [0xd58326b0, 0xdbfc1dcc, 0x6d66a04c, 0x08a21bbb], |
| 109 | [0x9b2cb5c5, 0x69b5f261, 0xcaccaaaf, 0xff2a807d]])); |
| 110 | } |
| 111 | } |