1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
use nihav_core::codecs::*;
use nihav_core::io::byteio::*;
const WIDTH: usize = 320;
const HEIGHT: usize = 200;
const FRAME_HEADER: usize = 24;
struct SequenceDecoder {
info: NACodecInfoRef,
pal: [u8; 768],
frame: [u8; WIDTH * HEIGHT],
}
impl SequenceDecoder {
fn new() -> Self {
Self {
info: NACodecInfoRef::default(),
pal: [0; 768],
frame: [0; WIDTH * HEIGHT],
}
}
}
impl NADecoder for SequenceDecoder {
fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
if let NACodecTypeInfo::Video(_vinfo) = info.get_properties() {
if let Some(ref edata) = info.get_extradata() {
validate!(edata.len() > 32);
let pal_start = read_u16le(&edata[25..])? as usize;
let pal_len = read_u16le(&edata[29..])? as usize;
validate!(pal_len > 0 && pal_start + pal_len <= 256);
match edata[32] {
0 => {
let dpal = self.pal[pal_start * 3..].chunks_exact_mut(3);
for (dst, quad) in dpal.zip(edata[37..].chunks_exact(4)) {
dst.copy_from_slice(&quad[1..]);
}
},
1 => self.pal[pal_start * 3..][..pal_len * 3].copy_from_slice(&edata[37..][..pal_len * 3]),
_ => return Err(DecoderError::NotImplemented),
}
} else {
return Err(DecoderError::InvalidData);
}
let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(WIDTH, HEIGHT, false, PAL8_FORMAT));
self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
Ok(())
} else {
Err(DecoderError::InvalidData)
}
}
fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
let src = pkt.get_buffer();
validate!(src.len() > FRAME_HEADER);
let mut mr = MemoryReader::new_read(&src);
let mut br = ByteReader::new(&mut mr);
let width = br.read_u16le()? as usize;
let height = br.read_u16le()? as usize;
let xoff = br.read_u16le()? as usize;
let yoff = br.read_u16le()? as usize;
validate!(width + xoff <= WIDTH && height + yoff <= HEIGHT);
let _ckey = br.read_byte()?;
let frm_type = br.read_byte()?;
br.read_skip(6)?;
let opcode_size = br.read_u16le()? as usize;
validate!(opcode_size <= src.len() - FRAME_HEADER);
let opcodes = &src[FRAME_HEADER..][..opcode_size];
let clr_data = &src[FRAME_HEADER + opcode_size..];
match frm_type {
0 => {
validate!(opcodes.is_empty());
validate!(clr_data.len() == width * height);
let dst = &mut self.frame[xoff + yoff * WIDTH..];
for (dline, sline) in dst.chunks_mut(WIDTH).zip(clr_data.chunks(width)) {
dline[..width].copy_from_slice(sline);
}
},
1 | 11 => {
validate!(!opcodes.is_empty());
let mut mr = MemoryReader::new_read(opcodes);
let mut ops = ByteReader::new(&mut mr);
let mut mr = MemoryReader::new_read(clr_data);
let mut clr = ByteReader::new(&mut mr);
let mut x = xoff;
let mut y = yoff;
while y < yoff + height {
let op = ops.read_byte()?;
let mut len = (op & 0x3F) as usize;
if len == 0 {
len = width + xoff - x;
}
match op >> 6 {
3 => x += len,
2 => {
clr.read_buf(&mut self.frame[x + y * WIDTH..][..len])?;
x += len;
},
_ => {
let len = ((u16::from(op & 0x7) << 8) | u16::from(ops.read_byte()?)) as usize;
match op >> 3 {
2 => x += len,
3 => {
for _ in 0..len {
validate!(y < height + yoff);
self.frame[x + y * WIDTH] = clr.read_byte()?;
x += 1;
if x == width + xoff {
y += 1;
x = xoff;
}
}
},
6 => {
let len = if len != 0 { len } else { height + yoff - y };
for _ in 0..(len * width) {
validate!(y < height + yoff);
self.frame[x + y * WIDTH] = clr.read_byte()?;
x += 1;
if x == width + xoff {
y += 1;
x = xoff;
}
}
},
7 => {
if len > 0 {
y += len;
} else {
y = height + yoff;
}
},
_ => return Err(DecoderError::NotImplemented),
}
},
}
if x == width + xoff {
x = xoff;
y += 1;
}
}
},
_ => return Err(DecoderError::InvalidData),
}
let buf = alloc_video_buffer(self.info.get_properties().get_video_info().unwrap(), 0)?;
let mut vbuf = buf.get_vbuf().unwrap();
let paloff = vbuf.get_offset(1);
let stride = vbuf.get_stride(0);
let data = vbuf.get_data_mut().unwrap();
for (drow, srow) in data.chunks_mut(stride).zip(self.frame.chunks_exact(WIDTH)) {
drow[..WIDTH].copy_from_slice(srow);
}
data[paloff..][..768].copy_from_slice(&self.pal);
let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buf);
let ftype = if pkt.keyframe { FrameType::I } else { FrameType::P };
frm.set_frame_type(ftype);
Ok(frm.into_ref())
}
fn flush(&mut self) {
}
}
impl NAOptionHandler for SequenceDecoder {
fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
fn set_options(&mut self, _options: &[NAOption]) { }
fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
}
pub fn get_decoder() -> Box<dyn NADecoder + Send> {
Box::new(SequenceDecoder::new())
}
#[cfg(test)]
mod test {
use nihav_core::codecs::RegisteredDecoders;
use nihav_core::demuxers::RegisteredDemuxers;
use nihav_codec_support::test::dec_video::*;
use crate::*;
#[test]
fn test_seq1() {
let mut dmx_reg = RegisteredDemuxers::new();
game_register_all_demuxers(&mut dmx_reg);
let mut dec_reg = RegisteredDecoders::new();
game_register_all_decoders(&mut dec_reg);
// sample from King's Quest VI
test_decoding("sierra-seq", "seq-video", "assets/Game/sierra/FS1.SEQ",
Some(2), &dmx_reg, &dec_reg,
ExpectedTestResult::MD5Frames(vec![
[0x5a7472da, 0xa9e242fd, 0x867efa52, 0x9625f05c],
[0x720ab982, 0x704970a0, 0xf854af8b, 0x3b86bed9],
[0xaa1426e1, 0x79750652, 0x87b7a727, 0xc582a561]]));
}
#[test]
fn test_seq2() {
let mut dmx_reg = RegisteredDemuxers::new();
game_register_all_demuxers(&mut dmx_reg);
let mut dec_reg = RegisteredDecoders::new();
game_register_all_decoders(&mut dec_reg);
// sample from Gabriel Knight
test_decoding("sierra-seq", "seq-video", "assets/Game/sierra/blood.seq",
Some(2), &dmx_reg, &dec_reg,
ExpectedTestResult::MD5Frames(vec![
[0x989422ee, 0x5892beae, 0x0ca9db17, 0xe25ab710],
[0x0d5f395e, 0x2eeac229, 0x1504ece0, 0xa7d3401e],
[0x988d3fa6, 0x68be4639, 0x7ab7137c, 0x72e69e26]]));
}
}
|
