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use nihav_core::frame::*;
use nihav_core::demuxers::*;
//use std::collections::HashMap;
enum GDVState {
NewFrame,
AudioRead,
}
#[allow(dead_code)]
struct GremlinVideoDemuxer<'a> {
src: &'a mut ByteReader<'a>,
frames: u16,
cur_frame: u16,
asize: usize,
apacked: bool,
state: GDVState,
pktdta: Vec<u8>,
a_id: Option<usize>,
v_id: Option<usize>,
}
struct GDVFixedSizes {
id: u16,
width: u16,
height: u16,
}
const GDV_SIZE_TABLE: &[GDVFixedSizes] = &[
GDVFixedSizes { id: 0, width: 320, height: 200 },
GDVFixedSizes { id: 1, width: 640, height: 200 },
GDVFixedSizes { id: 2, width: 320, height: 167 },
GDVFixedSizes { id: 3, width: 320, height: 180 },
GDVFixedSizes { id: 4, width: 320, height: 400 },
GDVFixedSizes { id: 5, width: 320, height: 170 },
GDVFixedSizes { id: 6, width: 160, height: 85 },
GDVFixedSizes { id: 7, width: 160, height: 83 },
GDVFixedSizes { id: 8, width: 160, height: 90 },
GDVFixedSizes { id: 9, width: 280, height: 128 },
GDVFixedSizes { id: 10, width: 320, height: 240 },
GDVFixedSizes { id: 11, width: 320, height: 201 },
GDVFixedSizes { id: 16, width: 640, height: 400 },
GDVFixedSizes { id: 17, width: 640, height: 200 },
GDVFixedSizes { id: 18, width: 640, height: 180 },
GDVFixedSizes { id: 19, width: 640, height: 167 },
GDVFixedSizes { id: 20, width: 640, height: 170 },
GDVFixedSizes { id: 21, width: 320, height: 240 },
];
impl<'a> DemuxCore<'a> for GremlinVideoDemuxer<'a> {
#[allow(unused_variables)]
fn open(&mut self, strmgr: &mut StreamManager, _seek_index: &mut SeekIndex) -> DemuxerResult<()> {
let src = &mut self.src;
let magic = src.read_u32le()?;
if magic != 0x29111994 { return Err(DemuxerError::InvalidData); }
let id = src.read_u16le()?;
let frames = src.read_u16le()?;
let fps = src.read_u16le()?;
let aflags = src.read_u16le()?;
let rate = src.read_u16le()?;
let depth = src.read_u16le()?;
let max_fs = src.read_u16le()?;
src.read_skip(2)?;
let mut width = src.read_u16le()?;
let mut height = src.read_u16le()?;
if (width == 0) && (height == 0) {
for el in GDV_SIZE_TABLE {
if el.id == id {
width = el.width;
height = el.height;
break;
}
}
if (width == 0) && (height == 0) { return Err(DemuxerError::InvalidData); }
}
if max_fs > 0 {
let mut edata: Vec<u8> = Vec::with_capacity(768);
if depth == 1 {
edata.resize(768, 0);
src.read_buf(edata.as_mut_slice())?;
}
let vhdr = NAVideoInfo::new(width as usize, height as usize, false, if depth < 2 { PAL8_FORMAT } else { RGB565_FORMAT });
let vci = NACodecTypeInfo::Video(vhdr);
let vinfo = NACodecInfo::new("gdv-video", vci, if edata.is_empty() { None } else { Some(edata) });
self.v_id = strmgr.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, u32::from(fps), u64::from(frames)));
}
if (aflags & 1) != 0 {
let channels = if (aflags & 2) != 0 { 2 } else { 1 };
let packed = if (aflags & 8) != 0 { 1 } else { 0 };
let depth = if (aflags & 4) != 0 { 16 } else { 8 };
let ahdr = NAAudioInfo::new(u32::from(rate), channels as u8, if depth == 16 { SND_S16_FORMAT } else { SND_U8_FORMAT }, 2);
let ainfo = NACodecInfo::new(if packed != 0 { "gdv-audio" } else { "pcm" },
NACodecTypeInfo::Audio(ahdr), None);
self.a_id = strmgr.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, u32::from(fps), 0));
self.asize = (((rate / fps) * channels * (depth / 8)) >> packed) as usize;
self.apacked = (aflags & 8) != 0;
}
self.frames = frames;
self.state = GDVState::NewFrame;
Ok(())
}
#[allow(unused_variables)]
fn get_frame(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
if self.cur_frame >= self.frames { return Err(DemuxerError::EOF); }
match self.state {
GDVState::NewFrame if self.asize > 0 => { self.read_achunk(strmgr) }
_ => { self.read_vchunk(strmgr) }
}
}
fn seek(&mut self, _time: NATimePoint, _seek_index: &SeekIndex) -> DemuxerResult<()> {
Err(DemuxerError::NotPossible)
}
fn get_duration(&self) -> u64 { 0 }
}
impl<'a> NAOptionHandler for GremlinVideoDemuxer<'a> {
fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
fn set_options(&mut self, _options: &[NAOption]) { }
fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
}
/*impl<'a> Drop for GremlinVideoDemuxer<'a> {
#[allow(unused_variables)]
fn drop(&mut self) {
}
}*/
impl<'a> GremlinVideoDemuxer<'a> {
fn new(io: &'a mut ByteReader<'a>) -> Self {
GremlinVideoDemuxer {
cur_frame: 0,
frames: 0,
asize: 0,
apacked: false,
state: GDVState::NewFrame,
pktdta: Vec::new(),
src: io,
a_id: None,
v_id: None,
}
}
fn read_achunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
self.state = GDVState::AudioRead;
let str = strmgr.get_stream(self.a_id.unwrap()).unwrap();
let (tb_num, tb_den) = str.get_timebase();
let ts = NATimeInfo::new(Some(u64::from(self.cur_frame)), None, None, tb_num, tb_den);
self.src.read_packet(str, ts, true, self.asize)
}
fn read_vchunk(&mut self, strmgr: &mut StreamManager) -> DemuxerResult<NAPacket> {
let str = strmgr.get_stream(self.v_id.unwrap()).unwrap();
let src = &mut self.src;
let magic = src.read_u16be()?;
if magic != 0x0513 { return Err(DemuxerError::InvalidData); }
let size = (src.read_u16le()? as usize) + 4;
let tmp = src.peek_u32le()?;
let flags = (tmp & 0xFF) as usize;
self.state = GDVState::NewFrame;
self.cur_frame += 1;
let (tb_num, tb_den) = str.get_timebase();
let ts = NATimeInfo::new(Some(u64::from(self.cur_frame - 1)), None, None, tb_num, tb_den);
src.read_packet(str, ts, (flags & 64) != 0, size)
}
}
pub struct GDVDemuxerCreator { }
impl DemuxerCreator for GDVDemuxerCreator {
fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<dyn DemuxCore<'a> + 'a> {
Box::new(GremlinVideoDemuxer::new(br))
}
fn get_name(&self) -> &'static str { "gdv" }
}
#[cfg(test)]
mod test {
use super::*;
use std::fs::File;
#[test]
fn test_gdv_demux() {
// sample from Normality game
let mut file = File::open("assets/Game/intro1.gdv").unwrap();
let mut fr = FileReader::new_read(&mut file);
let mut br = ByteReader::new(&mut fr);
let mut dmx = GremlinVideoDemuxer::new(&mut br);
let mut sm = StreamManager::new();
let mut si = SeekIndex::new();
dmx.open(&mut sm, &mut si).unwrap();
loop {
let pktres = dmx.get_frame(&mut sm);
if let Err(e) = pktres {
if (e as i32) == (DemuxerError::EOF as i32) { break; }
panic!("error");
}
let pkt = pktres.unwrap();
println!("Got {}", pkt);
}
}
}
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