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extern crate nihav;
use std::io::SeekFrom;
use std::fs::File;
use std::path::Path;
use nihav::io::byteio::{FileReader, ByteReader};
use nihav::frame::*;
use nihav::codecs::*;
use nihav::demuxers::*;
use nihav::detect;
use std::env;
mod frmwriter;
use frmwriter::*;
mod wavwriter;
use wavwriter::WavWriter;
struct FrameOutput {
prefix: &'static str,
streamno: usize,
}
impl FrameOutput {
fn output_frame(&mut self, pkt: &NAPacket, frmref: NAFrameRef) {
let frm = frmref.borrow();
if frm.get_frame_type() != FrameType::Skip {
let pts = if let Some(pt) = frm.get_pts() { pt } else { pkt.get_pts().unwrap() };
let frmbuf = frm.get_buffer().get_vbuf().unwrap();
if frmbuf.get_info().get_format().is_paletted() {
write_palppm(self.prefix, self.streamno, pts, frm);
} else {
write_pgmyuv(self.prefix, self.streamno, pts, frm);
}
}
}
}
struct AudioOutput {
wwr: WavWriter<'static>,
wrote_header: bool,
}
impl AudioOutput {
fn new(name: &String) -> Self { Self { wwr: WavWriter::new(name), wrote_header: false } }
fn output_frame(&mut self, _pkt: &NAPacket, frm: NAFrameRef) {
if !self.wrote_header {
self.wwr.write_header(frm.borrow().get_info().as_ref().get_properties().get_audio_info().unwrap()).unwrap();
self.wrote_header = true;
}
self.wwr.write_frame(frm.borrow().get_buffer()).unwrap();
}
}
enum Outputter {
Video(FrameOutput),
Audio(AudioOutput),
None,
}
fn main() {
let args: Vec<_> = env::args().collect();
if args.len() == 1 {
println!("usage: nihav-tool [-noout] [-vn] [-an] input [lastpts]");
return;
}
let mut lastpts: Option<u64> = None;
let mut cur_arg: usize = 1;
let mut noout = false;
let mut decode_video = true;
let mut decode_audio = true;
while (cur_arg < args.len()) && (args[cur_arg].chars().next().unwrap() == '-') {
match args[cur_arg].as_str() {
"--" => { break; },
"-noout" => { noout = true; },
"-an" => { decode_audio = false; },
"-vn" => { decode_video = false; },
_ => { println!("unknown option {}", args[cur_arg]); return; },
}
cur_arg += 1;
}
let name = args[cur_arg].as_str();
cur_arg += 1;
println!(" name = {} arg pos {}/{}", name, cur_arg, args.len());
if cur_arg < args.len() {
lastpts = Some(u64::from_str_radix(args[cur_arg].as_str(), 10).unwrap());
}
let path = Path::new(name);
let mut file = File::open(path).unwrap();
let dmx_fact;
let mut fr = FileReader::new_read(&mut file);
let mut br = ByteReader::new(&mut fr);
let res = detect::detect_format(name, &mut br);
if res.is_none() {
println!("cannot detect format for {}", name);
return;
}
let (dmx_name, _) = res.unwrap();
println!("trying demuxer {} on {}", dmx_name, name);
dmx_fact = find_demuxer(dmx_name).unwrap();
br.seek(SeekFrom::Start(0)).unwrap();
let mut dmx = create_demuxer(dmx_fact, &mut br).unwrap();
let mut decs: Vec<Option<Box<NADecoder>>> = Vec::new();
let mut writers: Vec<Outputter> = Vec::new();
for i in 0..dmx.get_num_streams() {
let s = dmx.get_stream(i).unwrap();
let info = s.get_info();
let decfunc = find_decoder(info.get_name());
println!("stream {} - {} {}", i, s, info.get_name());
let mut has_out = false;
if info.is_video() {
if decode_video {
let mut dec = (decfunc.unwrap())();
dec.init(info).unwrap();
decs.push(Some(dec));
if !noout {
writers.push(Outputter::Video(FrameOutput{prefix: "", streamno: i}));
has_out = true;
}
} else {
decs.push(None);
}
} else if info.is_audio() {
if decode_audio {
let mut dec = (decfunc.unwrap())();
dec.init(info).unwrap();
decs.push(Some(dec));
if !noout {
let name = format!("out{:02}.wav", i);
writers.push(Outputter::Audio(AudioOutput::new(&name)));
has_out = true;
}
} else {
decs.push(None);
}
} else {
decs.push(None);
panic!("decoder {} not found", info.get_name());
}
if !has_out {
writers.push(Outputter::None);
}
}
loop {
let pktres = dmx.get_frame();
if let Err(e) = pktres {
if e == DemuxerError::EOF { break; }
}
let pkt = pktres.unwrap();
let streamno = pkt.get_stream().get_id() as usize;
if let Some(ref mut dec) = decs[streamno] {
let frm = dec.decode(&pkt).unwrap();
if !noout {
match writers[streamno] {
Outputter::Video(ref mut wr) => { wr.output_frame(&pkt, frm); },
Outputter::Audio(ref mut wr) => { wr.output_frame(&pkt, frm); },
_ => {},
};
}
}
if pkt.get_pts() != None && pkt.get_pts() == lastpts { break; }
}
//panic!("end");
}
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