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5869fd63 KS |
1 | use super::*; |
2 | use io::byteio::*; | |
3 | use frame::*; | |
20ef4353 | 4 | use formats::*; |
5869fd63 KS |
5 | //use std::collections::HashMap; |
6 | ||
7 | enum GDVState { | |
8 | NewFrame, | |
9 | AudioRead, | |
10 | } | |
11 | ||
12 | #[allow(dead_code)] | |
eb71d98f | 13 | struct GremlinVideoDemuxer<'a> { |
20ef4353 KS |
14 | opened: bool, |
15 | src: &'a mut ByteReader<'a>, | |
16 | frames: u16, | |
17 | cur_frame: u16, | |
18 | asize: usize, | |
19 | apacked: bool, | |
20 | state: GDVState, | |
21 | pktdta: Vec<u8>, | |
22 | dmx: Demuxer, | |
23 | a_id: Option<usize>, | |
24 | v_id: Option<usize>, | |
5869fd63 KS |
25 | } |
26 | ||
20ef4353 | 27 | impl<'a> Demux<'a> for GremlinVideoDemuxer<'a> { |
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28 | #[allow(unused_variables)] |
29 | fn open(&mut self) -> DemuxerResult<()> { | |
30 | let src = &mut self.src; | |
31 | let magic = src.read_u32le()?; | |
32 | if magic != 0x29111994 { return Err(DemuxerError::InvalidData); } | |
33 | let id = src.read_u16le()?; | |
34 | let frames = src.read_u16le()?; | |
35 | let fps = src.read_u16le()?; | |
36 | let aflags = src.read_u16le()?; | |
37 | let rate = src.read_u16le()?; | |
38 | let depth = src.read_u16le()?; | |
39 | let max_fs = src.read_u16le()?; | |
40 | src.read_skip(2)?; | |
41 | let width = src.read_u16le()?; | |
42 | let height = src.read_u16le()?; | |
5869fd63 | 43 | if max_fs > 0 { |
81b3165f KS |
44 | let mut edata: Vec<u8> = Vec::with_capacity(768); |
45 | if depth == 1 { | |
46 | edata.resize(768, 0); | |
47 | src.read_buf(edata.as_mut_slice())?; | |
48 | } | |
66116504 | 49 | let vhdr = NAVideoInfo::new(width as usize, height as usize, false, PAL8_FORMAT); |
5869fd63 | 50 | let vci = NACodecTypeInfo::Video(vhdr); |
81b3165f | 51 | let vinfo = NACodecInfo::new("gdv-video", vci, if edata.len() == 0 { None } else { Some(edata) }); |
e189501e | 52 | self.v_id = self.dmx.add_stream(NAStream::new(StreamType::Video, 0, vinfo, 1, fps as u32)); |
5869fd63 KS |
53 | } |
54 | if (aflags & 1) != 0 { | |
55 | let channels = if (aflags & 2) != 0 { 2 } else { 1 }; | |
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56 | let packed = if (aflags & 8) != 0 { 1 } else { 0 }; |
57 | let depth = if (aflags & 4) != 0 { 16 } else { 8 }; | |
58 | ||
59 | let ahdr = NAAudioInfo::new(rate as u32, channels as u8, if depth == 16 { SND_S16_FORMAT } else { SND_U8_FORMAT }, 2); | |
60 | let ainfo = NACodecInfo::new(if packed != 0 { "gdv-audio" } else { "pcm" }, | |
61 | NACodecTypeInfo::Audio(ahdr), None); | |
e189501e | 62 | self.a_id = self.dmx.add_stream(NAStream::new(StreamType::Audio, 1, ainfo, 1, rate as u32)); |
5869fd63 | 63 | |
81b3165f | 64 | self.asize = (((rate / fps) * channels * (depth / 8)) >> packed) as usize; |
5869fd63 | 65 | self.apacked = (aflags & 8) != 0; |
5869fd63 | 66 | } |
5869fd63 KS |
67 | self.frames = frames; |
68 | self.opened = true; | |
69 | self.state = GDVState::NewFrame; | |
70 | Ok(()) | |
71 | } | |
72 | ||
73 | #[allow(unused_variables)] | |
74 | fn get_frame(&mut self) -> DemuxerResult<NAPacket> { | |
75 | if !self.opened { return Err(DemuxerError::NoSuchInput); } | |
76 | if self.cur_frame >= self.frames { return Err(DemuxerError::EOF); } | |
77 | match self.state { | |
78 | GDVState::NewFrame if self.asize > 0 => { self.read_achunk() } | |
79 | _ => { self.read_vchunk() } | |
80 | } | |
81 | } | |
82 | ||
66116504 KS |
83 | fn get_num_streams(&self) -> usize { self.dmx.get_num_streams() } |
84 | fn get_stream(&self, idx: usize) -> Option<Rc<NAStream>> { self.dmx.get_stream(idx) } | |
85 | ||
5869fd63 KS |
86 | #[allow(unused_variables)] |
87 | fn seek(&mut self, time: u64) -> DemuxerResult<()> { | |
88 | if !self.opened { return Err(DemuxerError::NoSuchInput); } | |
89 | Err(DemuxerError::NotImplemented) | |
90 | } | |
91 | } | |
92 | /*impl<'a> Drop for GremlinVideoDemuxer<'a> { | |
93 | #[allow(unused_variables)] | |
94 | fn drop(&mut self) { | |
95 | } | |
96 | }*/ | |
97 | impl<'a> GremlinVideoDemuxer<'a> { | |
eb71d98f | 98 | fn new(io: &'a mut ByteReader<'a>) -> Self { |
5869fd63 KS |
99 | GremlinVideoDemuxer { |
100 | cur_frame: 0, | |
101 | frames: 0, | |
102 | opened: false, | |
103 | asize: 0, | |
104 | apacked: false, | |
105 | state: GDVState::NewFrame, | |
106 | pktdta: Vec::new(), | |
107 | src: io, | |
20ef4353 KS |
108 | a_id: None, |
109 | v_id: None, | |
110 | dmx: Demuxer::new() | |
5869fd63 KS |
111 | } |
112 | } | |
113 | ||
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114 | fn read_achunk(&mut self) -> DemuxerResult<NAPacket> { |
115 | self.state = GDVState::AudioRead; | |
20ef4353 | 116 | let str = self.dmx.get_stream(self.a_id.unwrap()).unwrap(); |
e189501e KS |
117 | let (tb_num, tb_den) = str.get_timebase(); |
118 | let ts = NATimeInfo::new(Some(self.cur_frame as u64), None, None, tb_num, tb_den); | |
119 | self.src.read_packet(str, ts, true, self.asize) | |
5869fd63 KS |
120 | } |
121 | ||
122 | fn read_vchunk(&mut self) -> DemuxerResult<NAPacket> { | |
20ef4353 | 123 | let str = self.dmx.get_stream(self.v_id.unwrap()).unwrap(); |
5869fd63 KS |
124 | let mut src = &mut self.src; |
125 | let magic = src.read_u16be()?; | |
126 | if magic != 0x0513 { return Err(DemuxerError::InvalidData); } | |
127 | let size = (src.read_u16le()? as usize) + 4; | |
e24794ee | 128 | let tmp = src.peek_u32le()?; |
5869fd63 | 129 | let flags = (tmp & 0xFF) as usize; |
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130 | self.state = GDVState::NewFrame; |
131 | self.cur_frame = self.cur_frame + 1; | |
e189501e KS |
132 | let (tb_num, tb_den) = str.get_timebase(); |
133 | let ts = NATimeInfo::new(Some((self.cur_frame - 1) as u64), None, None, tb_num, tb_den); | |
134 | src.read_packet(str, ts, if (flags & 64) != 0 { true } else { false }, size) | |
5869fd63 KS |
135 | } |
136 | } | |
137 | ||
eb71d98f KS |
138 | pub struct GDVDemuxerCreator { } |
139 | ||
140 | impl DemuxerCreator for GDVDemuxerCreator { | |
141 | fn new_demuxer<'a>(&self, br: &'a mut ByteReader<'a>) -> Box<Demux<'a> + 'a> { | |
142 | Box::new(GremlinVideoDemuxer::new(br)) | |
143 | } | |
144 | fn get_name(&self) -> &'static str { "gdv" } | |
145 | } | |
146 | ||
5869fd63 KS |
147 | #[cfg(test)] |
148 | mod test { | |
149 | use super::*; | |
150 | use std::fs::File; | |
151 | ||
152 | #[test] | |
153 | fn test_gdv_demux() { | |
154 | let mut file = File::open("assets/intro1.gdv").unwrap(); | |
155 | let mut fr = FileReader::new_read(&mut file); | |
156 | let mut br = ByteReader::new(&mut fr); | |
157 | let mut dmx = GremlinVideoDemuxer::new(&mut br); | |
158 | dmx.open().unwrap(); | |
159 | loop { | |
160 | let pktres = dmx.get_frame(); | |
161 | if let Err(e) = pktres { | |
162 | if (e as i32) == (DemuxerError::EOF as i32) { break; } | |
163 | panic!("error"); | |
164 | } | |
165 | let pkt = pktres.unwrap(); | |
166 | println!("Got {}", pkt); | |
167 | } | |
168 | } | |
169 | } |