3 use std::cell::RefCell;
4 use io::byteio::ByteIOError;
5 use io::bitreader::BitReaderError;
6 use io::codebook::CodebookError;
8 #[derive(Debug,Clone,Copy,PartialEq)]
10 pub enum DecoderError {
20 pub type DecoderResult<T> = Result<T, DecoderError>;
22 impl From<ByteIOError> for DecoderError {
23 fn from(_: ByteIOError) -> Self { DecoderError::ShortData }
26 impl From<BitReaderError> for DecoderError {
27 fn from(e: BitReaderError) -> Self {
29 BitReaderError::BitstreamEnd => DecoderError::ShortData,
30 _ => DecoderError::InvalidData,
35 impl From<CodebookError> for DecoderError {
36 fn from(_: CodebookError) -> Self { DecoderError::InvalidData }
39 macro_rules! validate {
40 ($a:expr) => { if !$a { return Err(DecoderError::InvalidData); } };
45 lastframe: Option<NAVideoBuffer<u8>>,
50 fn new() -> Self { HAMShuffler { lastframe: None } }
52 fn clear(&mut self) { self.lastframe = None; }
54 fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
55 self.lastframe = Some(buf);
58 fn clone_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
59 if let Some(ref mut frm) = self.lastframe {
60 let newfrm = frm.copy_buffer();
61 *frm = newfrm.clone();
68 fn get_output_frame(&mut self) -> Option<NAVideoBuffer<u8>> {
69 match self.lastframe {
70 Some(ref frm) => Some(frm.clone()),
78 lastframe: Option<NAVideoBuffer<u8>>,
83 fn new() -> Self { IPShuffler { lastframe: None } }
85 fn clear(&mut self) { self.lastframe = None; }
87 fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
88 self.lastframe = Some(buf);
91 fn get_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
92 if let Some(ref frm) = self.lastframe {
100 pub trait NADecoder {
101 fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>;
102 fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef>;
105 #[derive(Clone,Copy)]
106 pub struct DecoderInfo {
108 get_decoder: fn () -> Box<NADecoder>,
111 #[cfg(feature="h263")]
114 #[cfg(feature="decoder_gdvvid")]
116 #[cfg(any(feature="decoder_indeo2", feature="decoder_indeo3"))]
118 #[cfg(feature="h263")]
121 #[cfg(feature="decoder_pcm")]
124 const DECODERS: &[DecoderInfo] = &[
125 #[cfg(feature="decoder_gdvvid")]
126 DecoderInfo { name: "gdv-video", get_decoder: gremlinvideo::get_decoder },
127 #[cfg(feature="decoder_indeo2")]
128 DecoderInfo { name: "indeo2", get_decoder: indeo::indeo2::get_decoder },
129 #[cfg(feature="decoder_indeo3")]
130 DecoderInfo { name: "indeo3", get_decoder: indeo::indeo3::get_decoder },
131 #[cfg(feature="decoder_intel263")]
132 DecoderInfo { name: "intel263", get_decoder: h263::intel263::get_decoder },
134 #[cfg(feature="decoder_pcm")]
135 DecoderInfo { name: "pcm", get_decoder: pcm::get_decoder },
138 pub fn find_decoder(name: &str) -> Option<fn () -> Box<NADecoder>> {
139 for &dec in DECODERS {
140 if dec.name == name {
141 return Some(dec.get_decoder);
148 use std::fs::{File, OpenOptions};
150 use std::io::prelude::*;
154 fn write_pgmyuv(pfx: &str, strno: usize, num: u64, frmref: NAFrameRef) {
155 let frm = frmref.borrow();
156 if let NABufferType::None = frm.get_buffer() { return; }
157 let name = format!("assets/{}out{:02}_{:04}.pgm", pfx, strno, num);
158 let mut ofile = File::create(name).unwrap();
159 let buf = frm.get_buffer().get_vbuf().unwrap();
160 let (w, h) = buf.get_dimensions(0);
161 let (w2, h2) = buf.get_dimensions(1);
163 let hdr = format!("P5\n{} {}\n255\n", w, tot_h);
164 ofile.write_all(hdr.as_bytes()).unwrap();
165 let dta = buf.get_data();
166 let ls = buf.get_stride(0);
169 let mut pad: Vec<u8> = Vec::with_capacity((w - w2 * 2) / 2);
170 pad.resize((w - w2 * 2) / 2, 0xFF);
172 let line = &dta[idx..idx2];
173 ofile.write_all(line).unwrap();
177 let mut base1 = buf.get_offset(1);
178 let stride1 = buf.get_stride(1);
179 let mut base2 = buf.get_offset(2);
180 let stride2 = buf.get_stride(2);
182 let bend1 = base1 + w2;
183 let line = &dta[base1..bend1];
184 ofile.write_all(line).unwrap();
185 ofile.write_all(pad.as_slice()).unwrap();
187 let bend2 = base2 + w2;
188 let line = &dta[base2..bend2];
189 ofile.write_all(line).unwrap();
190 ofile.write_all(pad.as_slice()).unwrap();
199 fn write_palppm(pfx: &str, strno: usize, num: u64, frmref: NAFrameRef) {
200 let frm = frmref.borrow();
201 let name = format!("assets/{}out{:02}_{:04}.ppm", pfx, strno, num);
202 let mut ofile = File::create(name).unwrap();
203 let buf = frm.get_buffer().get_vbuf().unwrap();
204 let (w, h) = buf.get_dimensions(0);
205 let paloff = buf.get_offset(1);
206 let hdr = format!("P6\n{} {}\n255\n", w, h);
207 ofile.write_all(hdr.as_bytes()).unwrap();
208 let dta = buf.get_data();
209 let ls = buf.get_stride(0);
211 let mut line: Vec<u8> = Vec::with_capacity(w * 3);
212 line.resize(w * 3, 0);
214 let src = &dta[idx..(idx+w)];
216 let pix = src[x] as usize;
217 line[x * 3 + 0] = dta[paloff + pix * 3 + 2];
218 line[x * 3 + 1] = dta[paloff + pix * 3 + 1];
219 line[x * 3 + 2] = dta[paloff + pix * 3 + 0];
221 ofile.write_all(line.as_slice()).unwrap();
228 fn write_sound(pfx: &str, strno: usize, frmref: NAFrameRef, first: bool) {
229 let frm = frmref.borrow();
230 let name = format!("assets/{}out{:02}.raw", pfx, strno);
231 let mut file = if first { File::create(name).unwrap() } else { OpenOptions::new().write(true).append(true).open(name).unwrap() };
232 let btype = frm.get_buffer();
233 let _ = match btype {
234 NABufferType::AudioU8(ref ab) => file.write_all(ab.get_data().as_ref()),
235 NABufferType::AudioPacked(ref ab) => file.write_all(ab.get_data().as_ref()),