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f9fc73be KS |
1 | use nihav_core::codecs::*; |
2 | use nihav_core::io::byteio::*; | |
3 | use nihav_core::compr::lz_copy; | |
4 | ||
5 | const FRAME_HEADER: usize = 24; | |
6 | ||
7 | struct RobotVideoDecoder { | |
8 | info: NACodecInfoRef, | |
9 | pal: [u8; 768], | |
10 | frame: Vec<u8>, | |
11 | cell_buf: Vec<u8>, | |
12 | width: usize, | |
13 | height: usize, | |
14 | version: u8, | |
15 | } | |
16 | ||
17 | impl RobotVideoDecoder { | |
18 | fn new() -> Self { | |
19 | Self { | |
20 | info: NACodecInfoRef::default(), | |
21 | pal: [0; 768], | |
22 | frame: Vec::new(), | |
23 | cell_buf: Vec::new(), | |
24 | width: 0, | |
25 | height: 0, | |
26 | version: 0, | |
27 | } | |
28 | } | |
29 | } | |
30 | ||
31 | struct BitReader<'a, 'b> { | |
32 | br: &'a mut ByteReader<'b>, | |
33 | end: u64, | |
34 | bbuf: u32, | |
35 | bits: u8, | |
36 | } | |
37 | ||
38 | impl<'a, 'b> BitReader<'a, 'b> { | |
39 | fn new(br: &'a mut ByteReader<'b>, size: usize) -> Self { | |
40 | let end = br.tell() + (size as u64); | |
41 | Self { | |
42 | br, end, | |
43 | bbuf: 0, | |
44 | bits: 0, | |
45 | } | |
46 | } | |
47 | fn refill(&mut self) -> DecoderResult<()> { | |
48 | while self.bits <= 24 && self.br.tell() < self.end { | |
49 | self.bbuf |= u32::from(self.br.read_byte()?) << (24 - self.bits); | |
50 | self.bits += 8; | |
51 | } | |
52 | Ok(()) | |
53 | } | |
54 | fn read_bit(&mut self) -> DecoderResult<bool> { | |
55 | self.refill()?; | |
56 | if self.bits == 0 { return Err(DecoderError::ShortData); } | |
57 | let bit = (self.bbuf >> 31) != 0; | |
58 | self.bbuf <<= 1; | |
59 | self.bits -= 1; | |
60 | Ok(bit) | |
61 | } | |
62 | fn read(&mut self, nbits: u8) -> DecoderResult<u32> { | |
63 | self.refill()?; | |
64 | if self.bits < nbits { return Err(DecoderError::ShortData); } | |
65 | let ret = self.bbuf >> (32 - nbits); | |
66 | self.bbuf <<= nbits; | |
67 | self.bits -= nbits; | |
68 | Ok(ret) | |
69 | } | |
70 | } | |
71 | ||
72 | fn lzs_unpack(br: &mut ByteReader, csize: usize, dst: &mut [u8]) -> DecoderResult<()> { | |
73 | let mut br = BitReader::new(br, csize); | |
74 | ||
75 | let mut dpos = 0; | |
76 | loop { | |
77 | if br.read_bit()? { | |
78 | let offset = (if br.read_bit()? { | |
79 | let off = br.read(7)?; | |
80 | if off == 0 { | |
81 | validate!(dpos == dst.len()); | |
82 | return Ok(()); | |
83 | } | |
84 | off | |
85 | } else { | |
86 | br.read(11)? | |
87 | }) as usize; | |
88 | ||
89 | let mut len = br.read(2)?; | |
90 | if len < 3 { | |
91 | len += 2; | |
92 | } else { | |
93 | len = br.read(2)?; | |
94 | if len < 3 { | |
95 | len += 5; | |
96 | } else { | |
97 | len = 8; | |
98 | loop { | |
99 | let t = br.read(4)?; | |
100 | len += t; | |
101 | if t != 0xF { | |
102 | break; | |
103 | } | |
104 | } | |
105 | } | |
106 | } | |
107 | let len = len as usize; | |
108 | ||
109 | validate!(offset <= dpos); | |
110 | validate!(dpos + len <= dst.len()); | |
111 | lz_copy(dst, dpos, offset, len); | |
112 | dpos += len; | |
113 | } else { | |
114 | dst[dpos] = br.read(8)? as u8; | |
115 | dpos += 1; | |
116 | } | |
117 | } | |
118 | } | |
119 | ||
120 | fn unpack_cell(br: &mut ByteReader, cell_size: usize, nchunks: usize, dst: &mut Vec<u8>, limit: usize) -> DecoderResult<()> { | |
121 | let mut data_left = cell_size; | |
122 | dst.clear(); | |
123 | dst.reserve(limit); | |
124 | for _ in 0..nchunks { | |
125 | validate!(data_left >= 10); | |
126 | let csize = br.read_u32le()? as usize; | |
127 | validate!(csize <= data_left); | |
128 | let rsize = br.read_u32le()? as usize; | |
129 | validate!(rsize + dst.len() <= limit); | |
130 | let method = br.read_u16le()?; | |
131 | ||
132 | data_left -= 10; | |
133 | ||
134 | let cur_size = dst.len(); | |
135 | dst.resize(cur_size + rsize, 0); | |
136 | match method { | |
137 | 0 => { lzs_unpack(br, csize, &mut dst[cur_size..])?; }, | |
138 | 2 => { | |
139 | validate!(rsize == csize); | |
140 | br.read_buf(&mut dst[cur_size..])?; | |
141 | }, | |
142 | _ => return Err(DecoderError::NotImplemented), | |
143 | } | |
144 | data_left -= csize; | |
145 | } | |
146 | Ok(()) | |
147 | } | |
148 | ||
149 | fn blit(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize) { | |
150 | for (dline, sline) in dst.chunks_mut(dstride).zip(src.chunks(sstride)) { | |
151 | dline[..sstride].copy_from_slice(sline); | |
152 | } | |
153 | } | |
154 | ||
155 | fn blit_scaled(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, scale: u8) { | |
156 | let mut slines = src.chunks(sstride); | |
157 | let mut acc = 0; | |
158 | ||
159 | let mut cur_line = slines.next().unwrap(); | |
160 | ||
161 | for dline in dst.chunks_mut(dstride) { | |
162 | dline[..sstride].copy_from_slice(cur_line); | |
163 | acc += scale; | |
164 | if acc >= 100 { | |
165 | acc -= 100; | |
166 | if let Some(line) = slines.next() { | |
167 | cur_line = line; | |
168 | } else { | |
169 | break; | |
170 | } | |
171 | } | |
172 | } | |
173 | } | |
174 | ||
175 | impl NADecoder for RobotVideoDecoder { | |
176 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { | |
177 | if let NACodecTypeInfo::Video(vinfo) = info.get_properties() { | |
178 | self.width = vinfo.get_width(); | |
179 | self.height = vinfo.get_height(); | |
180 | self.frame.resize(self.width * self.height, 0); | |
181 | if let Some(ref edata) = info.get_extradata() { | |
182 | validate!(edata.len() > 2); | |
183 | self.version = edata[0]; | |
184 | validate!(self.version >= 4 && self.version <= 6); | |
185 | if edata[1] != 0 { | |
186 | validate!(edata.len() > 39); | |
187 | let pal_start = read_u16le(&edata[25+2..])? as usize; | |
188 | let pal_len = read_u16le(&edata[29+2..])? as usize; | |
189 | validate!(pal_len > 0 && pal_start + pal_len <= 256); | |
190 | match edata[32+2] { | |
191 | 0 => { | |
192 | let dpal = self.pal[pal_start * 3..].chunks_exact_mut(3); | |
193 | for (dst, quad) in dpal.zip(edata[37+2..].chunks_exact(4)) { | |
194 | dst.copy_from_slice(&quad[1..]); | |
195 | } | |
196 | }, | |
197 | 1 => self.pal[pal_start * 3..][..pal_len * 3].copy_from_slice(&edata[37+2..][..pal_len * 3]), | |
198 | _ => return Err(DecoderError::NotImplemented), | |
199 | } | |
200 | } else { | |
201 | for (i, entry) in self.pal.chunks_exact_mut(3).enumerate() { | |
202 | entry[0] = i as u8; | |
203 | entry[1] = i as u8; | |
204 | entry[2] = i as u8; | |
205 | } | |
206 | } | |
207 | } else { | |
208 | return Err(DecoderError::InvalidData); | |
209 | } | |
210 | let myinfo = NACodecTypeInfo::Video(NAVideoInfo::new(self.width, self.height, false, PAL8_FORMAT)); | |
211 | self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref(); | |
212 | ||
213 | Ok(()) | |
214 | } else { | |
215 | Err(DecoderError::InvalidData) | |
216 | } | |
217 | } | |
218 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { | |
219 | let src = pkt.get_buffer(); | |
220 | validate!(src.len() > FRAME_HEADER); | |
221 | ||
222 | let mut mr = MemoryReader::new_read(&src); | |
223 | let mut br = ByteReader::new(&mut mr); | |
224 | ||
225 | let ncells = br.read_u16le()? as usize; | |
226 | validate!(ncells > 0 && ncells <= 10); | |
227 | for el in self.frame.iter_mut() { *el = 0xFF; } | |
228 | for _ in 0..ncells { | |
229 | br.read_byte()?; | |
230 | let scale = br.read_byte()?; | |
231 | let width = br.read_u16le()? as usize; | |
232 | let height = br.read_u16le()? as usize; | |
233 | br.read_skip(4)?; | |
234 | let xoff = br.read_u16le()? as usize; | |
235 | let yoff = br.read_u16le()? as usize; | |
236 | validate!(xoff + width <= self.width && yoff + height <= self.height); | |
237 | let mut cell_size = br.read_u16le()? as usize; | |
238 | // hack | |
239 | if self.version == 6 && ncells == 1 && (src.len() - 18 >= 0x10000) { | |
240 | cell_size += (src.len() - 18) & !0xFFFF; | |
241 | } | |
242 | if self.version > 4 { | |
243 | let nchunks = br.read_u16le()? as usize; | |
244 | validate!(nchunks > 0); | |
245 | br.read_skip(4)?; | |
246 | ||
247 | unpack_cell(&mut br, cell_size, nchunks, &mut self.cell_buf, width * height)?; | |
248 | } else { | |
249 | br.read_skip(6)?; | |
250 | self.cell_buf.resize(width * height, 0); | |
251 | lzs_unpack(&mut br, cell_size, &mut self.cell_buf)?; | |
252 | } | |
253 | if scale == 100 { | |
254 | blit(&mut self.frame[xoff + yoff * self.width..], self.width, &self.cell_buf, width); | |
255 | } else { | |
256 | blit_scaled(&mut self.frame[xoff + yoff * self.width..], self.width, &self.cell_buf, width, scale); | |
257 | } | |
258 | } | |
259 | ||
260 | let buf = alloc_video_buffer(self.info.get_properties().get_video_info().unwrap(), 0)?; | |
261 | let mut vbuf = buf.get_vbuf().unwrap(); | |
262 | let paloff = vbuf.get_offset(1); | |
263 | let stride = vbuf.get_stride(0); | |
264 | let data = vbuf.get_data_mut().unwrap(); | |
265 | ||
266 | blit(data, stride, &self.frame, self.width); | |
267 | data[paloff..][..768].copy_from_slice(&self.pal); | |
268 | ||
269 | let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), buf); | |
270 | let ftype = if pkt.keyframe { FrameType::I } else { FrameType::P }; | |
271 | frm.set_frame_type(ftype); | |
272 | Ok(frm.into_ref()) | |
273 | } | |
274 | fn flush(&mut self) { | |
275 | } | |
276 | } | |
277 | ||
278 | impl NAOptionHandler for RobotVideoDecoder { | |
279 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } | |
280 | fn set_options(&mut self, _options: &[NAOption]) { } | |
281 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } | |
282 | } | |
283 | ||
284 | pub fn get_decoder() -> Box<dyn NADecoder + Send> { | |
285 | Box::new(RobotVideoDecoder::new()) | |
286 | } | |
287 | ||
288 | struct RobotAudioDecoder { | |
289 | info: NACodecInfoRef, | |
290 | ainfo: NAAudioInfo, | |
291 | chmap: NAChannelMap, | |
292 | } | |
293 | ||
294 | impl RobotAudioDecoder { | |
295 | fn new() -> Self { | |
296 | Self { | |
297 | ainfo: NAAudioInfo::new(11025, 1, SND_S16_FORMAT, 1), | |
298 | info: NACodecInfo::new_dummy(), | |
299 | chmap: NAChannelMap::from_str("C").unwrap(), | |
300 | } | |
301 | } | |
302 | fn pred16(pred: i32, val: u8) -> i32 { | |
303 | if (val & 0x80) != 0 { | |
304 | pred - i32::from(SOL_AUD_STEPS16[(val & 0x7F) as usize]) | |
305 | } else { | |
306 | pred + i32::from(SOL_AUD_STEPS16[(val & 0x7F) as usize]) | |
307 | } | |
308 | } | |
309 | } | |
310 | ||
311 | impl NADecoder for RobotAudioDecoder { | |
312 | fn init(&mut self, _supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> { | |
313 | if let NACodecTypeInfo::Audio(_ainfo) = info.get_properties() { | |
314 | self.info = info.replace_info(NACodecTypeInfo::Audio(self.ainfo)); | |
315 | ||
316 | Ok(()) | |
317 | } else { | |
318 | Err(DecoderError::InvalidData) | |
319 | } | |
320 | } | |
321 | fn decode(&mut self, _supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> { | |
322 | let src = pkt.get_buffer(); | |
323 | validate!(src.len() > 1); | |
324 | ||
325 | let samples = match src[0] { | |
326 | 0 => src.len() - 1, | |
327 | 1 => src.len() - 1 - 8, | |
328 | _ => return Err(DecoderError::InvalidData), | |
329 | }; | |
330 | ||
331 | let abuf = alloc_audio_buffer(self.ainfo, samples / 2, self.chmap.clone())?; | |
332 | let mut adata = abuf.get_abuf_i16().unwrap(); | |
333 | let dst = adata.get_data_mut().unwrap(); | |
334 | ||
335 | match src[0] { | |
336 | 0 => { | |
337 | let mut pred = 0; | |
338 | for (dst, &b) in dst.iter_mut().zip(src[1..][..src.len()/2].iter()) { | |
339 | pred = Self::pred16(pred, b); | |
340 | *dst = pred as i16; | |
341 | } | |
342 | }, | |
343 | 1 => { | |
344 | validate!(src.len() > 8); | |
345 | let mut pred = 0; | |
346 | for &b in src[1..9].iter() { | |
347 | pred = Self::pred16(pred, b); | |
348 | } | |
349 | for (dst, &b) in dst.iter_mut().zip(src[9..].iter()) { | |
350 | pred = Self::pred16(pred, b); | |
351 | *dst = pred as i16; | |
352 | } | |
353 | }, | |
354 | _ => unreachable!(), | |
355 | } | |
356 | ||
357 | let frm = NAFrame::new_from_pkt(pkt, self.info.clone(), abuf); | |
358 | Ok(frm.into_ref()) | |
359 | } | |
360 | fn flush(&mut self) { | |
361 | } | |
362 | } | |
363 | ||
364 | impl NAOptionHandler for RobotAudioDecoder { | |
365 | fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] } | |
366 | fn set_options(&mut self, _options: &[NAOption]) { } | |
367 | fn query_option_value(&self, _name: &str) -> Option<NAValue> { None } | |
368 | } | |
369 | ||
370 | pub fn get_decoder_audio() -> Box<dyn NADecoder + Send> { | |
371 | Box::new(RobotAudioDecoder::new()) | |
372 | } | |
373 | ||
374 | #[cfg(test)] | |
375 | mod test { | |
376 | use nihav_core::codecs::RegisteredDecoders; | |
377 | use nihav_core::demuxers::RegisteredDemuxers; | |
378 | use nihav_codec_support::test::dec_video::*; | |
379 | use crate::*; | |
380 | #[test] | |
381 | fn test_rbt_v4() { | |
382 | let mut dmx_reg = RegisteredDemuxers::new(); | |
383 | game_register_all_demuxers(&mut dmx_reg); | |
384 | let mut dec_reg = RegisteredDecoders::new(); | |
385 | game_register_all_decoders(&mut dec_reg); | |
386 | ||
387 | // sample from SWAT demo | |
388 | test_decoding("sierra-rbt", "rbt-video", "assets/Game/sierra/12.rbt", | |
389 | Some(2), &dmx_reg, &dec_reg, | |
390 | ExpectedTestResult::MD5Frames(vec![ | |
391 | [0x2a00775d, 0xef8da06a, 0x015b6f06, 0xa22d0158], | |
392 | [0xf2acb558, 0x0d9c5c54, 0x32c43af4, 0xd9776b68], | |
393 | [0x386e02e9, 0x76dbd5a6, 0x4e9da3d7, 0xa47fdca3]])); | |
394 | } | |
395 | #[test] | |
396 | fn test_rbt_v5() { | |
397 | let mut dmx_reg = RegisteredDemuxers::new(); | |
398 | game_register_all_demuxers(&mut dmx_reg); | |
399 | let mut dec_reg = RegisteredDecoders::new(); | |
400 | game_register_all_decoders(&mut dec_reg); | |
401 | ||
402 | // sample from Phantasmagora (with scaling) | |
403 | test_decoding("sierra-rbt", "rbt-video", "assets/Game/sierra/162.RBT", | |
404 | None, &dmx_reg, &dec_reg, | |
405 | ExpectedTestResult::MD5([0x4912fa8f, 0xae201d9e, 0x59707ea0, 0xc50bf0e2])); | |
406 | } | |
407 | #[test] | |
408 | fn test_rbt_v6() { | |
409 | let mut dmx_reg = RegisteredDemuxers::new(); | |
410 | game_register_all_demuxers(&mut dmx_reg); | |
411 | let mut dec_reg = RegisteredDecoders::new(); | |
412 | game_register_all_decoders(&mut dec_reg); | |
413 | ||
414 | // sample from Rama | |
415 | test_decoding("sierra-rbt", "rbt-video", "assets/Game/sierra/7531.RBT", | |
416 | Some(2), &dmx_reg, &dec_reg, | |
417 | ExpectedTestResult::MD5Frames(vec![ | |
418 | [0x49db87f3, 0x57881095, 0x676d1600, 0x5ddaa50b], | |
419 | [0xa75ff558, 0xb6815b27, 0x5f9d872f, 0xd7f56470], | |
420 | [0x60bca745, 0xc47d6882, 0xc193fe70, 0x7b8738c9]])); | |
421 | } | |
422 | #[test] | |
423 | fn test_rbt_audio() { | |
424 | let mut dmx_reg = RegisteredDemuxers::new(); | |
425 | game_register_all_demuxers(&mut dmx_reg); | |
426 | let mut dec_reg = RegisteredDecoders::new(); | |
427 | game_register_all_decoders(&mut dec_reg); | |
428 | ||
429 | // sample from Space Quest 6 | |
430 | test_decoding("sierra-rbt", "rbt-audio", "assets/Game/sierra/410.rbt", | |
431 | Some(2), &dmx_reg, &dec_reg, | |
432 | ExpectedTestResult::MD5([0xdd44e3ca, 0x6cfc1bc1, 0xdcd4214a, 0x443cf5ed])); | |
433 | } | |
434 | } | |
435 | ||
436 | const SOL_AUD_STEPS16: [i16; 128] = [ | |
437 | 0x00, 0x08, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, | |
438 | 0x70, 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, | |
439 | 0xF0, 0x100, 0x110, 0x120, 0x130, 0x140, 0x150, 0x160, | |
440 | 0x170, 0x180, 0x190, 0x1A0, 0x1B0, 0x1C0, 0x1D0, 0x1E0, | |
441 | 0x1F0, 0x200, 0x208, 0x210, 0x218, 0x220, 0x228, 0x230, | |
442 | 0x238, 0x240, 0x248, 0x250, 0x258, 0x260, 0x268, 0x270, | |
443 | 0x278, 0x280, 0x288, 0x290, 0x298, 0x2A0, 0x2A8, 0x2B0, | |
444 | 0x2B8, 0x2C0, 0x2C8, 0x2D0, 0x2D8, 0x2E0, 0x2E8, 0x2F0, | |
445 | 0x2F8, 0x300, 0x308, 0x310, 0x318, 0x320, 0x328, 0x330, | |
446 | 0x338, 0x340, 0x348, 0x350, 0x358, 0x360, 0x368, 0x370, | |
447 | 0x378, 0x380, 0x388, 0x390, 0x398, 0x3A0, 0x3A8, 0x3B0, | |
448 | 0x3B8, 0x3C0, 0x3C8, 0x3D0, 0x3D8, 0x3E0, 0x3E8, 0x3F0, | |
449 | 0x3F8, 0x400, 0x440, 0x480, 0x4C0, 0x500, 0x540, 0x580, | |
450 | 0x5C0, 0x600, 0x640, 0x680, 0x6C0, 0x700, 0x740, 0x780, | |
451 | 0x7C0, 0x800, 0x900, 0xA00, 0xB00, 0xC00, 0xD00, 0xE00, | |
452 | 0xF00, 0x1000, 0x1400, 0x1800, 0x1C00, 0x2000, 0x3000, 0x4000 | |
453 | ]; |