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use frame::*;
use std::rc::Rc;
use std::cell::RefCell;
use io::byteio::ByteIOError;
use io::bitreader::BitReaderError;
use io::codebook::CodebookError;
#[derive(Debug,Clone,Copy,PartialEq)]
#[allow(dead_code)]
pub enum DecoderError {
InvalidData,
ShortData,
MissingReference,
NotImplemented,
Bug,
}
type DecoderResult<T> = Result<T, DecoderError>;
impl From<ByteIOError> for DecoderError {
fn from(_: ByteIOError) -> Self { DecoderError::ShortData }
}
impl From<BitReaderError> for DecoderError {
fn from(e: BitReaderError) -> Self {
match e {
BitReaderError::BitstreamEnd => DecoderError::ShortData,
_ => DecoderError::InvalidData,
}
}
}
impl From<CodebookError> for DecoderError {
fn from(_: CodebookError) -> Self { DecoderError::InvalidData }
}
#[allow(dead_code)]
struct HAMShuffler {
lastframe: Option<NAVideoBuffer<u8>>,
}
impl HAMShuffler {
#[allow(dead_code)]
fn new() -> Self { HAMShuffler { lastframe: None } }
#[allow(dead_code)]
fn clear(&mut self) { self.lastframe = None; }
#[allow(dead_code)]
fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
self.lastframe = Some(buf);
}
#[allow(dead_code)]
fn clone_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
if let Some(ref mut frm) = self.lastframe {
let newfrm = frm.copy_buffer();
*frm = newfrm.clone();
Some(newfrm)
} else {
None
}
}
#[allow(dead_code)]
fn get_output_frame(&mut self) -> Option<NAVideoBuffer<u8>> {
match self.lastframe {
Some(ref frm) => Some(frm.clone()),
None => None,
}
}
}
#[allow(dead_code)]
struct IPShuffler {
lastframe: Option<NAVideoBuffer<u8>>,
}
impl IPShuffler {
#[allow(dead_code)]
fn new() -> Self { IPShuffler { lastframe: None } }
#[allow(dead_code)]
fn clear(&mut self) { self.lastframe = None; }
#[allow(dead_code)]
fn add_frame(&mut self, buf: NAVideoBuffer<u8>) {
self.lastframe = Some(buf);
}
#[allow(dead_code)]
fn get_ref(&mut self) -> Option<NAVideoBuffer<u8>> {
if let Some(ref frm) = self.lastframe {
Some(frm.clone())
} else {
None
}
}
}
pub trait NADecoder {
fn init(&mut self, info: Rc<NACodecInfo>) -> DecoderResult<()>;
fn decode(&mut self, pkt: &NAPacket) -> DecoderResult<NAFrameRef>;
}
#[derive(Clone,Copy)]
pub struct DecoderInfo {
name: &'static str,
get_decoder: fn () -> Box<NADecoder>,
}
macro_rules! validate {
($a:expr) => { if !$a { return Err(DecoderError::InvalidData); } };
}
#[cfg(feature="decoder_indeo2")]
mod indeo2;
#[cfg(feature="decoder_indeo3")]
mod indeo3;
#[cfg(feature="decoder_pcm")]
mod pcm;
const DECODERS: &[DecoderInfo] = &[
#[cfg(feature="decoder_indeo2")]
DecoderInfo { name: "indeo2", get_decoder: indeo2::get_decoder },
#[cfg(feature="decoder_indeo3")]
DecoderInfo { name: "indeo3", get_decoder: indeo3::get_decoder },
#[cfg(feature="decoder_pcm")]
DecoderInfo { name: "pcm", get_decoder: pcm::get_decoder },
];
pub fn find_decoder(name: &str) -> Option<fn () -> Box<NADecoder>> {
for &dec in DECODERS {
if dec.name == name {
return Some(dec.get_decoder);
}
}
None
}
#[cfg(test)]
use std::fs::{File, OpenOptions};
#[cfg(test)]
use std::io::prelude::*;
#[cfg(test)]
fn write_pgmyuv(pfx: &str, strno: usize, num: u64, frmref: NAFrameRef) {
let frm = frmref.borrow();
let name = format!("assets/{}out{:02}_{:04}.pgm", pfx, strno, num);
let mut ofile = File::create(name).unwrap();
let buf = frm.get_buffer().get_vbuf().unwrap();
let (w, h) = buf.get_dimensions(0);
let (w2, h2) = buf.get_dimensions(1);
let tot_h = h + h2;
let hdr = format!("P5\n{} {}\n255\n", w, tot_h);
ofile.write_all(hdr.as_bytes()).unwrap();
let dta = buf.get_data();
let ls = buf.get_stride(0);
let mut idx = 0;
let mut idx2 = ls;
let mut pad: Vec<u8> = Vec::with_capacity((w - w2 * 2) / 2);
pad.resize((w - w2 * 2) / 2, 0xFF);
for _ in 0..h {
let line = &dta[idx..idx2];
ofile.write_all(line).unwrap();
idx += ls;
idx2 += ls;
}
let mut base1 = buf.get_offset(1);
let stride1 = buf.get_stride(1);
let mut base2 = buf.get_offset(2);
let stride2 = buf.get_stride(2);
for _ in 0..h2 {
let bend1 = base1 + w2;
let line = &dta[base1..bend1];
ofile.write_all(line).unwrap();
ofile.write_all(pad.as_slice()).unwrap();
let bend2 = base2 + w2;
let line = &dta[base2..bend2];
ofile.write_all(line).unwrap();
ofile.write_all(pad.as_slice()).unwrap();
base1 += stride1;
base2 += stride2;
}
}
#[cfg(test)]
fn write_sound(pfx: &str, strno: usize, frmref: NAFrameRef, first: bool) {
let frm = frmref.borrow();
let name = format!("assets/{}out{:02}.raw", pfx, strno);
let mut file = if first { File::create(name).unwrap() } else { OpenOptions::new().write(true).append(true).open(name).unwrap() };
let btype = frm.get_buffer();
let _ = match btype {
NABufferType::AudioU8(ref ab) => file.write_all(ab.get_data().as_ref()),
NABufferType::AudioPacked(ref ab) => file.write_all(ab.get_data().as_ref()),
_ => Ok(()),
};
}
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