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
|
use nihav_core::codecs::*;
use nihav_core::io::byteio::*;
use nihav_codec_support::codecs::HAMShuffler;
const RGB555_FORMAT: NAPixelFormaton = NAPixelFormaton {
model: ColorModel::RGB(RGBSubmodel::RGB), components: 3,
comp_info: [
Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: 10, comp_offs: 0, next_elem: 2 }),
Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: 5, comp_offs: 0, next_elem: 2 }),
Some(NAPixelChromaton{ h_ss: 0, v_ss: 0, packed: true, depth: 5, shift: 0, comp_offs: 0, next_elem: 2 }),
None, None],
elem_size: 2, be: false, alpha: false, palette: false };
#[derive(Default)]
struct RpzaDecoder {
info: NACodecInfoRef,
hams: HAMShuffler<u16>,
width: usize,
height: usize,
}
impl RpzaDecoder {
fn new() -> Self {
Self::default()
}
fn put_block(dst: &mut [u16], dstride: usize, block: &[u16; 16]) {
for (line, src) in dst.chunks_mut(dstride).take(4).zip(block.chunks(4)) {
line[..4].copy_from_slice(src);
}
}
}
fn div3(a: u16, b: u16) -> u16 {
let r0 = (a >> 10) & 0x1F;
let g0 = (a >> 5) & 0x1F;
let b0 = a & 0x1F;
let r1 = (b >> 10) & 0x1F;
let g1 = (b >> 5) & 0x1F;
let b1 = b & 0x1F;
let r = (r0 * 21 + r1 * 11) / 32;
let g = (g0 * 21 + g1 * 11) / 32;
let b = (b0 * 21 + b1 * 11) / 32;
(r << 10) | (g << 5) | b
}
impl NADecoder for RpzaDecoder {
fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
self.width = (vinfo.get_width() + 3) & !3;
self.height = (vinfo.get_height() + 3) & !3;
let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(self.width, self.height, false, RGB555_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() >= 2);
let mut mr = MemoryReader::new_read(src.as_slice());
let mut br = ByteReader::new(&mut mr);
let id = br.read_byte()?;
validate!(id == 0xE1);
let length = br.read_u24be()? as usize;
validate!(length == src.len());
let bufret = self.hams.clone_ref();
let mut buf;
if let Some(bbuf) = bufret {
buf = bbuf;
} else {
let bufinfo = alloc_video_buffer(self.info.get_properties().get_video_info().unwrap(), 2)?;
buf = bufinfo.get_vbuf16().unwrap();
self.hams.add_frame(buf);
buf = self.hams.get_output_frame().unwrap();
}
let frm = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap();
let stride = frm.stride[0];
let mut doff = frm.offset[0];
let mut x = 0;
let nblocks = (self.width / 4) * (self.height / 4);
let mut blockpos = 0;
let mut has_skips = false;
let mut block = [0u16; 16];
while blockpos < nblocks {
let opcode = br.read_byte()?;
if (opcode & 0x80) == 0 {
let b2 = br.read_byte()?;
let clr0 = u16::from(opcode) * 256 + u16::from(b2);
if (br.peek_byte()? & 0x80) == 0 {
block[0] = clr0;
for el in block.iter_mut().skip(1) {
*el = br.read_u16be()?;
}
} else {
let clr3 = br.read_u16be()?;
let clr1 = div3(clr0, clr3);
let clr2 = div3(clr3, clr0);
let clr = [clr3, clr2, clr1, clr0];
let flags = br.read_u32be()? as usize;
for i in 0..16 {
block[i] = clr[(flags >> (30 - i * 2)) & 3];
}
}
Self::put_block(&mut frm.data[doff + x..], stride, &block);
x += 4;
if x == self.width {
x = 0;
doff += stride * 4;
}
blockpos += 1;
continue;
}
let len = ((opcode & 0x1F) as usize) + 1;
validate!(blockpos + len <= nblocks);
match opcode >> 5 {
4 => {
has_skips = true;
for _ in 0..len {
x += 4;
if x == self.width {
x = 0;
doff += stride * 4;
}
}
},
5 => {
let clr = br.read_u16be()?;
block = [clr; 16];
for _ in 0..len {
Self::put_block(&mut frm.data[doff + x..], stride, &block);
x += 4;
if x == self.width {
x = 0;
doff += stride * 4;
}
}
},
6 => {
let clr0 = br.read_u16be()?;
let clr3 = br.read_u16be()?;
let clr1 = div3(clr0, clr3);
let clr2 = div3(clr3, clr0);
let clr = [clr3, clr2, clr1, clr0];
for _ in 0..len {
let flags = br.read_u32be()? as usize;
for i in 0..16 {
block[i] = clr[(flags >> (30 - i * 2)) & 3];
}
Self::put_block(&mut frm.data[doff + x..], stride, &block);
x += 4;
if x == self.width {
x = 0;
doff += stride * 4;
}
}
},
_ => {
return Err(DecoderError::InvalidData);
},
};
blockpos += len;
}
let buftype = NABufferType::Video16(buf);
let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buftype);
frm.set_keyframe(!has_skips);
frm.set_frame_type(if !has_skips { FrameType::I } else { FrameType::P });
Ok(frm.into_ref())
}
fn flush(&mut self) {
self.hams.clear();
}
}
impl NAOptionHandler for RpzaDecoder {
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(RpzaDecoder::new())
}
#[cfg(test)]
mod test {
use nihav_core::codecs::RegisteredDecoders;
use nihav_core::demuxers::RegisteredDemuxers;
use nihav_codec_support::test::dec_video::*;
use crate::qt_register_all_decoders;
use nihav_commonfmt::generic_register_all_demuxers;
#[test]
fn test_rpza() {
let mut dmx_reg = RegisteredDemuxers::new();
generic_register_all_demuxers(&mut dmx_reg);
let mut dec_reg = RegisteredDecoders::new();
qt_register_all_decoders(&mut dec_reg);
// sample: https://samples.mplayerhq.hu/V-codecs/RPZA/aletrek-rpza.mov
test_decoding("mov", "apple-video", "assets/QT/aletrek-rpza.mov", Some(6), &dmx_reg, &dec_reg,
ExpectedTestResult::MD5Frames(vec![
[0xe7cfc941, 0xa448841b, 0x75afc888, 0x94aa064b],
[0xadaaec50, 0xff7319ff, 0xa1f3f64a, 0xc40c2985],
[0xdfa5c4b9, 0xdac2d22b, 0x14f9f281, 0x7295eae7],
[0x3f3420b9, 0xbe48b885, 0x91b0fb51, 0xd71462ac],
[0xcaae1580, 0x16eecce3, 0x2ca0dd4b, 0x7f9c62e3],
[0xb51fc759, 0xe1cfc171, 0xda854767, 0x878f6e17],
[0x8d3abf6d, 0xeecec7a2, 0x5832e5d6, 0x86145fc9]]));
}
}
|
