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1 | //! Image conversion functionality. | |
2 | ||
3 | //! # Examples | |
4 | //! | |
5 | //! Convert input image into YUV one and scale down two times. | |
6 | //! ```no_run | |
7 | //! use nihav_core::scale::*; | |
8 | //! use nihav_core::formats::{RGB24_FORMAT, YUV420_FORMAT}; | |
9 | //! use nihav_core::frame::{alloc_video_buffer, NAVideoInfo}; | |
10 | //! | |
11 | //! let mut in_pic = alloc_video_buffer(NAVideoInfo::new(640, 480, false, RGB24_FORMAT), 4).unwrap(); | |
12 | //! let mut out_pic = alloc_video_buffer(NAVideoInfo::new(320, 240, false, YUV420_FORMAT), 4).unwrap(); | |
13 | //! let in_fmt = get_scale_fmt_from_pic(&in_pic); | |
14 | //! let out_fmt = get_scale_fmt_from_pic(&out_pic); | |
15 | //! let mut scaler = NAScale::new(in_fmt, out_fmt).unwrap(); | |
16 | //! scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
17 | //! ``` | |
18 | use crate::frame::*; | |
19 | ||
20 | mod kernel; | |
21 | ||
22 | mod colorcvt; | |
23 | mod repack; | |
24 | #[allow(clippy::module_inception)] | |
25 | mod scale; | |
26 | ||
27 | mod palette; | |
28 | ||
29 | pub use crate::scale::palette::{palettise_frame, QuantisationMode, PaletteSearchMode}; | |
30 | ||
31 | /// Image format information used by the converter. | |
32 | #[derive(Clone,Copy,PartialEq)] | |
33 | pub struct ScaleInfo { | |
34 | /// Pixel format description. | |
35 | pub fmt: NAPixelFormaton, | |
36 | /// Image width. | |
37 | pub width: usize, | |
38 | /// Image height. | |
39 | pub height: usize, | |
40 | } | |
41 | ||
42 | impl std::fmt::Display for ScaleInfo { | |
43 | fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { | |
44 | write!(f, "({}x{}, {})", self.width, self.height, self.fmt) | |
45 | } | |
46 | } | |
47 | ||
48 | /// A list specifying general image conversion errors. | |
49 | #[derive(Debug,Clone,Copy,PartialEq)] | |
50 | #[allow(dead_code)] | |
51 | pub enum ScaleError { | |
52 | /// Input or output buffer contains no image data. | |
53 | NoFrame, | |
54 | /// Allocation failed. | |
55 | AllocError, | |
56 | /// Invalid argument. | |
57 | InvalidArgument, | |
58 | /// Feature is not implemented. | |
59 | NotImplemented, | |
60 | /// Internal implementation bug. | |
61 | Bug, | |
62 | } | |
63 | ||
64 | /// A specialised `Result` type for image conversion operations. | |
65 | pub type ScaleResult<T> = Result<T, ScaleError>; | |
66 | ||
67 | /*trait Kernel { | |
68 | fn init(&mut self, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo) -> ScaleResult<NABufferType>; | |
69 | fn process(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType); | |
70 | }*/ | |
71 | ||
72 | struct KernelDesc { | |
73 | name: &'static str, | |
74 | create: fn () -> Box<dyn kernel::Kernel>, | |
75 | } | |
76 | ||
77 | impl KernelDesc { | |
78 | fn find(name: &str) -> ScaleResult<Box<dyn kernel::Kernel>> { | |
79 | for kern in KERNELS.iter() { | |
80 | if kern.name == name { | |
81 | return Ok((kern.create)()); | |
82 | } | |
83 | } | |
84 | Err(ScaleError::InvalidArgument) | |
85 | } | |
86 | } | |
87 | ||
88 | const KERNELS: &[KernelDesc] = &[ | |
89 | KernelDesc { name: "pack", create: repack::create_pack }, | |
90 | KernelDesc { name: "unpack", create: repack::create_unpack }, | |
91 | KernelDesc { name: "depal", create: repack::create_depal }, | |
92 | KernelDesc { name: "palette", create: palette::create_palettise }, | |
93 | KernelDesc { name: "scale", create: scale::create_scale }, | |
94 | KernelDesc { name: "rgb_to_yuv", create: colorcvt::create_rgb2yuv }, | |
95 | KernelDesc { name: "yuv_to_rgb", create: colorcvt::create_yuv2rgb }, | |
96 | ]; | |
97 | ||
98 | struct Stage { | |
99 | fmt_out: ScaleInfo, | |
100 | tmp_pic: NABufferType, | |
101 | next: Option<Box<Stage>>, | |
102 | worker: Box<dyn kernel::Kernel>, | |
103 | } | |
104 | ||
105 | /// Converts input picture information into format used by scaler. | |
106 | pub fn get_scale_fmt_from_pic(pic: &NABufferType) -> ScaleInfo { | |
107 | let info = pic.get_video_info().unwrap(); | |
108 | ScaleInfo { fmt: info.get_format(), width: info.get_width(), height: info.get_height() } | |
109 | } | |
110 | ||
111 | impl Stage { | |
112 | fn new(name: &str, in_fmt: &ScaleInfo, dest_fmt: &ScaleInfo, options: &[(String, String)]) -> ScaleResult<Self> { | |
113 | let mut worker = KernelDesc::find(name)?; | |
114 | let tmp_pic = worker.init(in_fmt, dest_fmt, options)?; | |
115 | let fmt_out = get_scale_fmt_from_pic(&tmp_pic); | |
116 | Ok(Self { fmt_out, tmp_pic, next: None, worker }) | |
117 | } | |
118 | fn add(&mut self, new: Stage) { | |
119 | if let Some(ref mut next) = self.next { | |
120 | next.add(new); | |
121 | } else { | |
122 | self.next = Some(Box::new(new)); | |
123 | } | |
124 | } | |
125 | fn process(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType) -> ScaleResult<()> { | |
126 | if let Some(ref mut nextstage) = self.next { | |
127 | self.worker.process(pic_in, &mut self.tmp_pic); | |
128 | nextstage.process(&self.tmp_pic, pic_out)?; | |
129 | } else { | |
130 | self.worker.process(pic_in, pic_out); | |
131 | } | |
132 | Ok(()) | |
133 | } | |
134 | fn drop_last_tmp(&mut self) { | |
135 | if let Some(ref mut nextstage) = self.next { | |
136 | nextstage.drop_last_tmp(); | |
137 | } else { | |
138 | self.tmp_pic = NABufferType::None; | |
139 | } | |
140 | } | |
141 | } | |
142 | ||
143 | /// Image format converter. | |
144 | pub struct NAScale { | |
145 | fmt_in: ScaleInfo, | |
146 | fmt_out: ScaleInfo, | |
147 | just_convert: bool, | |
148 | pipeline: Option<Stage>, | |
149 | } | |
150 | ||
151 | fn check_format(in_fmt: NAVideoInfo, ref_fmt: &ScaleInfo, just_convert: bool) -> ScaleResult<()> { | |
152 | if in_fmt.get_format() != ref_fmt.fmt { return Err(ScaleError::InvalidArgument); } | |
153 | if !just_convert && (in_fmt.get_width() != ref_fmt.width || in_fmt.get_height() != ref_fmt.height) { | |
154 | return Err(ScaleError::InvalidArgument); | |
155 | } | |
156 | Ok(()) | |
157 | } | |
158 | ||
159 | fn copy(pic_in: &NABufferType, pic_out: &mut NABufferType) | |
160 | { | |
161 | if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf(), pic_out.get_vbuf()) { | |
162 | let mut same = true; | |
163 | let num_components = sbuf.get_info().get_format().get_num_comp(); | |
164 | for i in 0..num_components { | |
165 | if sbuf.get_stride(i) != dbuf.get_stride(i) { | |
166 | same = false; | |
167 | break; | |
168 | } | |
169 | if sbuf.get_offset(i) != dbuf.get_offset(i) { | |
170 | same = false; | |
171 | break; | |
172 | } | |
173 | } | |
174 | if same { | |
175 | let sdata = sbuf.get_data(); | |
176 | let ddata = dbuf.get_data_mut().unwrap(); | |
177 | ddata.copy_from_slice(&sdata[0..]); | |
178 | } else { | |
179 | let sdata = sbuf.get_data(); | |
180 | for comp in 0..num_components { | |
181 | let (_, h) = sbuf.get_dimensions(comp); | |
182 | let src = &sdata[sbuf.get_offset(comp)..]; | |
183 | let sstride = sbuf.get_stride(comp); | |
184 | let doff = dbuf.get_offset(comp); | |
185 | let dstride = dbuf.get_stride(comp); | |
186 | let ddata = dbuf.get_data_mut().unwrap(); | |
187 | let dst = &mut ddata[doff..]; | |
188 | let copy_size = sstride.min(dstride); | |
189 | for (dline, sline) in dst.chunks_exact_mut(dstride).take(h).zip(src.chunks_exact(sstride)) { | |
190 | dline[..copy_size].copy_from_slice(&sline[..copy_size]); | |
191 | } | |
192 | } | |
193 | } | |
194 | } else if let (Some(ref sbuf), Some(ref mut dbuf)) = (pic_in.get_vbuf16(), pic_out.get_vbuf16()) { | |
195 | let mut same = true; | |
196 | let num_components = sbuf.get_info().get_format().get_num_comp(); | |
197 | for i in 0..num_components { | |
198 | if sbuf.get_stride(i) != dbuf.get_stride(i) { | |
199 | same = false; | |
200 | break; | |
201 | } | |
202 | if sbuf.get_offset(i) != dbuf.get_offset(i) { | |
203 | same = false; | |
204 | break; | |
205 | } | |
206 | } | |
207 | if same { | |
208 | let sdata = sbuf.get_data(); | |
209 | let ddata = dbuf.get_data_mut().unwrap(); | |
210 | ddata.copy_from_slice(&sdata[0..]); | |
211 | } else { | |
212 | let sdata = sbuf.get_data(); | |
213 | for comp in 0..num_components { | |
214 | let (_, h) = sbuf.get_dimensions(comp); | |
215 | let src = &sdata[sbuf.get_offset(comp)..]; | |
216 | let sstride = sbuf.get_stride(comp); | |
217 | let doff = dbuf.get_offset(comp); | |
218 | let dstride = dbuf.get_stride(comp); | |
219 | let ddata = dbuf.get_data_mut().unwrap(); | |
220 | let dst = &mut ddata[doff..]; | |
221 | let copy_size = sstride.min(dstride); | |
222 | for (dline, sline) in dst.chunks_exact_mut(dstride).take(h).zip(src.chunks_exact(sstride)) { | |
223 | dline[..copy_size].copy_from_slice(&sline[..copy_size]); | |
224 | } | |
225 | } | |
226 | } | |
227 | } else { | |
228 | unimplemented!(); | |
229 | } | |
230 | } | |
231 | ||
232 | macro_rules! add_stage { | |
233 | ($head:expr, $new:expr) => { | |
234 | if let Some(ref mut h) = $head { | |
235 | h.add($new); | |
236 | } else { | |
237 | $head = Some($new); | |
238 | } | |
239 | }; | |
240 | } | |
241 | fn is_better_fmt(a: &ScaleInfo, b: &ScaleInfo) -> bool { | |
242 | if (a.width >= b.width) && (a.height >= b.height) { | |
243 | return true; | |
244 | } | |
245 | if a.fmt.get_max_depth() > b.fmt.get_max_depth() { | |
246 | return true; | |
247 | } | |
248 | if a.fmt.get_max_subsampling() < b.fmt.get_max_subsampling() { | |
249 | return true; | |
250 | } | |
251 | false | |
252 | } | |
253 | fn fmt_needs_scale(ifmt: &NAPixelFormaton, ofmt: &NAPixelFormaton) -> bool { | |
254 | for (ichr, ochr) in ifmt.comp_info.iter().zip(ofmt.comp_info.iter()) { | |
255 | if let (Some(ic), Some(oc)) = (ichr, ochr) { | |
256 | if ic.h_ss != oc.h_ss || ic.v_ss != oc.v_ss { | |
257 | return true; | |
258 | } | |
259 | } | |
260 | } | |
261 | false | |
262 | } | |
263 | fn build_pipeline(ifmt: &ScaleInfo, ofmt: &ScaleInfo, just_convert: bool, options: &[(String, String)]) -> ScaleResult<Option<Stage>> { | |
264 | let mut debug = false; | |
265 | for (name, value) in options.iter() { | |
266 | if name == "debug" && (value.is_empty() || value == "true") { | |
267 | debug = true; | |
268 | break; | |
269 | } | |
270 | } | |
271 | ||
272 | let inname = ifmt.fmt.get_model().get_short_name(); | |
273 | let outname = ofmt.fmt.get_model().get_short_name(); | |
274 | ||
275 | if debug { | |
276 | println!("convert {} -> {}", ifmt, ofmt); | |
277 | } | |
278 | let needs_scale = if fmt_needs_scale(&ifmt.fmt, &ofmt.fmt) { | |
279 | true | |
280 | } else { | |
281 | !just_convert | |
282 | }; | |
283 | let needs_unpack = !ifmt.fmt.is_unpacked(); | |
284 | let needs_pack = !ofmt.fmt.is_unpacked(); | |
285 | let needs_convert = inname != outname; | |
286 | let scale_before_cvt = is_better_fmt(ifmt, ofmt) && needs_convert | |
287 | && (ofmt.fmt.get_max_subsampling() == 0); | |
288 | let needs_palettise = ofmt.fmt.palette; | |
289 | //todo stages for model and gamma conversion | |
290 | ||
291 | let mut stages: Option<Stage> = None; | |
292 | let mut cur_fmt = *ifmt; | |
293 | ||
294 | if needs_unpack { | |
295 | if debug { | |
296 | println!("[adding unpack]"); | |
297 | } | |
298 | let new_stage = if !cur_fmt.fmt.is_paletted() { | |
299 | Stage::new("unpack", &cur_fmt, ofmt, options)? | |
300 | } else { | |
301 | Stage::new("depal", &cur_fmt, ofmt, options)? | |
302 | }; | |
303 | cur_fmt = new_stage.fmt_out; | |
304 | add_stage!(stages, new_stage); | |
305 | } | |
306 | if needs_scale && scale_before_cvt { | |
307 | if debug { | |
308 | println!("[adding scale]"); | |
309 | } | |
310 | let new_stage = Stage::new("scale", &cur_fmt, ofmt, options)?; | |
311 | cur_fmt = new_stage.fmt_out; | |
312 | add_stage!(stages, new_stage); | |
313 | } | |
314 | if needs_convert { | |
315 | if debug { | |
316 | println!("[adding convert]"); | |
317 | } | |
318 | let cvtname = format!("{}_to_{}", inname, outname); | |
319 | if debug { | |
320 | println!("[{}]", cvtname); | |
321 | } | |
322 | let new_stage = Stage::new(&cvtname, &cur_fmt, ofmt, options)?; | |
323 | //todo if fails try converting via RGB or YUV | |
324 | cur_fmt = new_stage.fmt_out; | |
325 | add_stage!(stages, new_stage); | |
326 | //todo alpha plane copy/add | |
327 | } | |
328 | if needs_scale && !scale_before_cvt { | |
329 | if debug { | |
330 | println!("[adding scale]"); | |
331 | } | |
332 | let new_stage = Stage::new("scale", &cur_fmt, ofmt, options)?; | |
333 | cur_fmt = new_stage.fmt_out; | |
334 | add_stage!(stages, new_stage); | |
335 | } | |
336 | if needs_pack && !needs_palettise { | |
337 | if debug { | |
338 | println!("[adding pack]"); | |
339 | } | |
340 | let new_stage = Stage::new("pack", &cur_fmt, ofmt, options)?; | |
341 | //cur_fmt = new_stage.fmt_out; | |
342 | add_stage!(stages, new_stage); | |
343 | } | |
344 | if needs_palettise { | |
345 | if debug { | |
346 | println!("[adding palettise]"); | |
347 | } | |
348 | let new_stage = Stage::new("palette", &cur_fmt, ofmt, options)?; | |
349 | //cur_fmt = new_stage.fmt_out; | |
350 | add_stage!(stages, new_stage); | |
351 | } | |
352 | ||
353 | if let Some(ref mut head) = stages { | |
354 | head.drop_last_tmp(); | |
355 | } | |
356 | ||
357 | Ok(stages) | |
358 | } | |
359 | ||
360 | fn swap_plane<T:Copy>(data: &mut [T], stride: usize, h: usize, line0: &mut [T], line1: &mut [T]) { | |
361 | let mut doff0 = 0; | |
362 | let mut doff1 = stride * (h - 1); | |
363 | for _ in 0..h/2 { | |
364 | line0.copy_from_slice(&data[doff0..][..stride]); | |
365 | line1.copy_from_slice(&data[doff1..][..stride]); | |
366 | data[doff1..][..stride].copy_from_slice(line0); | |
367 | data[doff0..][..stride].copy_from_slice(line1); | |
368 | doff0 += stride; | |
369 | doff1 -= stride; | |
370 | } | |
371 | } | |
372 | ||
373 | /// Flips the picture contents. | |
374 | pub fn flip_picture(pic: &mut NABufferType) -> ScaleResult<()> { | |
375 | match pic { | |
376 | NABufferType::Video(ref mut vb) => { | |
377 | let ncomp = vb.get_num_components(); | |
378 | for comp in 0..ncomp { | |
379 | let off = vb.get_offset(comp); | |
380 | let stride = vb.get_stride(comp); | |
381 | let (_, h) = vb.get_dimensions(comp); | |
382 | let data = vb.get_data_mut().unwrap(); | |
383 | let mut line0 = vec![0; stride]; | |
384 | let mut line1 = vec![0; stride]; | |
385 | swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice()); | |
386 | } | |
387 | }, | |
388 | NABufferType::Video16(ref mut vb) => { | |
389 | let ncomp = vb.get_num_components().max(1); | |
390 | for comp in 0..ncomp { | |
391 | let off = vb.get_offset(comp); | |
392 | let stride = vb.get_stride(comp); | |
393 | let (_, h) = vb.get_dimensions(comp); | |
394 | let data = vb.get_data_mut().unwrap(); | |
395 | let mut line0 = vec![0; stride]; | |
396 | let mut line1 = vec![0; stride]; | |
397 | swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice()); | |
398 | } | |
399 | }, | |
400 | NABufferType::Video32(ref mut vb) => { | |
401 | let ncomp = vb.get_num_components().max(1); | |
402 | for comp in 0..ncomp { | |
403 | let off = vb.get_offset(comp); | |
404 | let stride = vb.get_stride(comp); | |
405 | let (_, h) = vb.get_dimensions(comp); | |
406 | let data = vb.get_data_mut().unwrap(); | |
407 | let mut line0 = vec![0; stride]; | |
408 | let mut line1 = vec![0; stride]; | |
409 | swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice()); | |
410 | } | |
411 | }, | |
412 | NABufferType::VideoPacked(ref mut vb) => { | |
413 | let ncomp = vb.get_num_components(); | |
414 | for comp in 0..ncomp { | |
415 | let off = vb.get_offset(comp); | |
416 | let stride = vb.get_stride(comp); | |
417 | let (_, h) = vb.get_dimensions(comp); | |
418 | let data = vb.get_data_mut().unwrap(); | |
419 | let mut line0 = vec![0; stride]; | |
420 | let mut line1 = vec![0; stride]; | |
421 | swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice()); | |
422 | } | |
423 | if ncomp == 0 && vb.get_stride(0) != 0 { | |
424 | let off = vb.get_offset(0); | |
425 | let stride = vb.get_stride(0); | |
426 | let (_, h) = vb.get_dimensions(0); | |
427 | let data = vb.get_data_mut().unwrap(); | |
428 | let mut line0 = vec![0; stride]; | |
429 | let mut line1 = vec![0; stride]; | |
430 | swap_plane(&mut data[off..], stride, h, line0.as_mut_slice(), line1.as_mut_slice()); | |
431 | } | |
432 | }, | |
433 | _ => { return Err(ScaleError::InvalidArgument); }, | |
434 | }; | |
435 | Ok(()) | |
436 | } | |
437 | ||
438 | impl NAScale { | |
439 | /// Constructs a new `NAScale` instance. | |
440 | pub fn new(fmt_in: ScaleInfo, fmt_out: ScaleInfo) -> ScaleResult<Self> { | |
441 | let just_convert = (fmt_in.width == fmt_out.width) && (fmt_in.height == fmt_out.height); | |
442 | let pipeline = if fmt_in != fmt_out { | |
443 | build_pipeline(&fmt_in, &fmt_out, just_convert, &[])? | |
444 | } else { | |
445 | None | |
446 | }; | |
447 | Ok(Self { fmt_in, fmt_out, just_convert, pipeline }) | |
448 | } | |
449 | /// Constructs a new `NAScale` instance taking into account provided options. | |
450 | pub fn new_with_options(fmt_in: ScaleInfo, fmt_out: ScaleInfo, options: &[(String, String)]) -> ScaleResult<Self> { | |
451 | let just_convert = (fmt_in.width == fmt_out.width) && (fmt_in.height == fmt_out.height); | |
452 | let pipeline = if fmt_in != fmt_out { | |
453 | build_pipeline(&fmt_in, &fmt_out, just_convert, options)? | |
454 | } else { | |
455 | None | |
456 | }; | |
457 | Ok(Self { fmt_in, fmt_out, just_convert, pipeline }) | |
458 | } | |
459 | /// Checks whether requested conversion operation is needed at all. | |
460 | pub fn needs_processing(&self) -> bool { self.pipeline.is_some() } | |
461 | /// Returns the input image format. | |
462 | pub fn get_in_fmt(&self) -> ScaleInfo { self.fmt_in } | |
463 | /// Returns the output image format. | |
464 | pub fn get_out_fmt(&self) -> ScaleInfo { self.fmt_out } | |
465 | /// Performs the image format conversion. | |
466 | pub fn convert(&mut self, pic_in: &NABufferType, pic_out: &mut NABufferType) -> ScaleResult<()> { | |
467 | let in_info = pic_in.get_video_info(); | |
468 | let out_info = pic_out.get_video_info(); | |
469 | if in_info.is_none() || out_info.is_none() { return Err(ScaleError::InvalidArgument); } | |
470 | let in_info = in_info.unwrap(); | |
471 | let out_info = out_info.unwrap(); | |
472 | if self.just_convert && | |
473 | (in_info.get_width() != out_info.get_width() || in_info.get_height() != out_info.get_height()) { | |
474 | return Err(ScaleError::InvalidArgument); | |
475 | } | |
476 | let needs_flip = in_info.is_flipped() ^ out_info.is_flipped(); | |
477 | check_format(in_info, &self.fmt_in, self.just_convert)?; | |
478 | check_format(out_info, &self.fmt_out, self.just_convert)?; | |
479 | let ret = if let Some(ref mut pipe) = self.pipeline { | |
480 | pipe.process(pic_in, pic_out) | |
481 | } else { | |
482 | copy(pic_in, pic_out); | |
483 | Ok(()) | |
484 | }; | |
485 | if ret.is_ok() && needs_flip { | |
486 | flip_picture(pic_out)?; | |
487 | } | |
488 | ret | |
489 | } | |
490 | } | |
491 | ||
492 | #[cfg(test)] | |
493 | mod test { | |
494 | use super::*; | |
495 | ||
496 | fn fill_pic(pic: &mut NABufferType, val: u8) { | |
497 | if let Some(ref mut buf) = pic.get_vbuf() { | |
498 | let data = buf.get_data_mut().unwrap(); | |
499 | for el in data.iter_mut() { *el = val; } | |
500 | } else if let Some(ref mut buf) = pic.get_vbuf16() { | |
501 | let data = buf.get_data_mut().unwrap(); | |
502 | for el in data.iter_mut() { *el = val as u16; } | |
503 | } else if let Some(ref mut buf) = pic.get_vbuf32() { | |
504 | let data = buf.get_data_mut().unwrap(); | |
505 | for el in data.iter_mut() { *el = (val as u32) * 0x01010101; } | |
506 | } | |
507 | } | |
508 | #[test] | |
509 | fn test_convert() { | |
510 | let mut in_pic = alloc_video_buffer(NAVideoInfo::new(1, 1, false, RGB565_FORMAT), 3).unwrap(); | |
511 | fill_pic(&mut in_pic, 42); | |
512 | let mut out_pic = alloc_video_buffer(NAVideoInfo::new(1, 1, false, RGB24_FORMAT), 3).unwrap(); | |
513 | fill_pic(&mut out_pic, 0); | |
514 | let ifmt = get_scale_fmt_from_pic(&in_pic); | |
515 | let ofmt = get_scale_fmt_from_pic(&out_pic); | |
516 | let mut scaler = NAScale::new(ifmt, ofmt).unwrap(); | |
517 | scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
518 | let obuf = out_pic.get_vbuf().unwrap(); | |
519 | let odata = obuf.get_data(); | |
520 | assert_eq!(odata[0], 0x0); | |
521 | assert_eq!(odata[1], 0x4); | |
522 | assert_eq!(odata[2], 0x52); | |
523 | ||
524 | let mut in_pic = alloc_video_buffer(NAVideoInfo::new(4, 4, false, RGB24_FORMAT), 3).unwrap(); | |
525 | fill_pic(&mut in_pic, 42); | |
526 | let mut out_pic = alloc_video_buffer(NAVideoInfo::new(4, 4, false, YUV420_FORMAT), 3).unwrap(); | |
527 | fill_pic(&mut out_pic, 0); | |
528 | let ifmt = get_scale_fmt_from_pic(&in_pic); | |
529 | let ofmt = get_scale_fmt_from_pic(&out_pic); | |
530 | let mut scaler = NAScale::new(ifmt, ofmt).unwrap(); | |
531 | scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
532 | let obuf = out_pic.get_vbuf().unwrap(); | |
533 | let yoff = obuf.get_offset(0); | |
534 | let uoff = obuf.get_offset(1); | |
535 | let voff = obuf.get_offset(2); | |
536 | let odata = obuf.get_data(); | |
537 | assert_eq!(odata[yoff], 42); | |
538 | assert!(((odata[uoff] ^ 0x80) as i8).abs() <= 1); | |
539 | assert!(((odata[voff] ^ 0x80) as i8).abs() <= 1); | |
540 | let mut scaler = NAScale::new(ofmt, ifmt).unwrap(); | |
541 | scaler.convert(&out_pic, &mut in_pic).unwrap(); | |
542 | let obuf = in_pic.get_vbuf().unwrap(); | |
543 | let odata = obuf.get_data(); | |
544 | assert_eq!(odata[0], 42); | |
545 | } | |
546 | #[test] | |
547 | fn test_scale() { | |
548 | let mut in_pic = alloc_video_buffer(NAVideoInfo::new(2, 2, false, RGB565_FORMAT), 3).unwrap(); | |
549 | fill_pic(&mut in_pic, 42); | |
550 | let mut out_pic = alloc_video_buffer(NAVideoInfo::new(3, 3, false, RGB565_FORMAT), 3).unwrap(); | |
551 | fill_pic(&mut out_pic, 0); | |
552 | let ifmt = get_scale_fmt_from_pic(&in_pic); | |
553 | let ofmt = get_scale_fmt_from_pic(&out_pic); | |
554 | let mut scaler = NAScale::new(ifmt, ofmt).unwrap(); | |
555 | scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
556 | let obuf = out_pic.get_vbuf16().unwrap(); | |
557 | let odata = obuf.get_data(); | |
558 | assert_eq!(odata[0], 42); | |
559 | } | |
560 | #[test] | |
561 | fn test_scale_and_convert() { | |
562 | let mut in_pic = alloc_video_buffer(NAVideoInfo::new(7, 3, false, RGB565_FORMAT), 3).unwrap(); | |
563 | fill_pic(&mut in_pic, 42); | |
564 | let mut out_pic = alloc_video_buffer(NAVideoInfo::new(4, 4, false, YUV420_FORMAT), 3).unwrap(); | |
565 | fill_pic(&mut out_pic, 0); | |
566 | let ifmt = get_scale_fmt_from_pic(&in_pic); | |
567 | let ofmt = get_scale_fmt_from_pic(&out_pic); | |
568 | let mut scaler = NAScale::new(ifmt, ofmt).unwrap(); | |
569 | scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
570 | let obuf = out_pic.get_vbuf().unwrap(); | |
571 | let yoff = obuf.get_offset(0); | |
572 | let uoff = obuf.get_offset(1); | |
573 | let voff = obuf.get_offset(2); | |
574 | let odata = obuf.get_data(); | |
575 | assert_eq!(odata[yoff], 11); | |
576 | assert_eq!(odata[uoff], 162); | |
577 | assert_eq!(odata[voff], 118); | |
578 | } | |
579 | #[test] | |
580 | fn test_scale_and_convert_to_pal() { | |
581 | let mut in_pic = alloc_video_buffer(NAVideoInfo::new(7, 3, false, YUV420_FORMAT), 3).unwrap(); | |
582 | fill_pic(&mut in_pic, 142); | |
583 | let mut out_pic = alloc_video_buffer(NAVideoInfo::new(4, 4, false, PAL8_FORMAT), 0).unwrap(); | |
584 | fill_pic(&mut out_pic, 0); | |
585 | let ifmt = get_scale_fmt_from_pic(&in_pic); | |
586 | let ofmt = get_scale_fmt_from_pic(&out_pic); | |
587 | let mut scaler = NAScale::new(ifmt, ofmt).unwrap(); | |
588 | scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
589 | let obuf = out_pic.get_vbuf().unwrap(); | |
590 | let dataoff = obuf.get_offset(0); | |
591 | let paloff = obuf.get_offset(1); | |
592 | let odata = obuf.get_data(); | |
593 | assert_eq!(odata[dataoff], 0); | |
594 | assert_eq!(odata[paloff], 157); | |
595 | assert_eq!(odata[paloff + 1], 129); | |
596 | assert_eq!(odata[paloff + 2], 170); | |
597 | } | |
598 | #[test] | |
599 | fn test_scale_modes() { | |
600 | const IN_DATA: [[u8; 6]; 2] = [ | |
601 | [0xFF, 0xC0, 0x40, 0x00, 0x40, 0xC0], | |
602 | [0x00, 0x40, 0xC0, 0xFF, 0xC0, 0x40] | |
603 | ]; | |
604 | const TEST_DATA: &[(&str, [[u8; 9]; 3])] = &[ | |
605 | ("nn", | |
606 | [[0xFF, 0xC0, 0x40, 0xFF, 0xC0, 0x40, 0x00, 0x40, 0xC0], | |
607 | [0xFF, 0xC0, 0x40, 0xFF, 0xC0, 0x40, 0x00, 0x40, 0xC0], | |
608 | [0x00, 0x40, 0xC0, 0x00, 0x40, 0xC0, 0xFF, 0xC0, 0x40]]), | |
609 | ("bilin", | |
610 | [[0xFF, 0xC0, 0x40, 0x55, 0x6A, 0x95, 0x00, 0x40, 0xC0], | |
611 | [0x55, 0x6A, 0x95, 0x8D, 0x86, 0x78, 0xAA, 0x95, 0x6A], | |
612 | [0x00, 0x40, 0xC0, 0xAA, 0x95, 0x6A, 0xFF, 0xC0, 0x40]]), | |
613 | ("bicubic", | |
614 | [[0xFF, 0xC0, 0x40, 0x4B, 0x65, 0x9A, 0x00, 0x36, 0xC9], | |
615 | [0x4B, 0x65, 0x9A, 0x94, 0x8A, 0x74, 0xB3, 0x9D, 0x61], | |
616 | [0x00, 0x36, 0xC9, 0xBA, 0x9D, 0x61, 0xFF, 0xD3, 0x2B]]), | |
617 | ("lanczos", | |
618 | [[0xFF, 0xC0, 0x40, 0x4C, 0x66, 0x98, 0x00, 0x31, 0xCD], | |
619 | [0x4C, 0x66, 0x98, 0x91, 0x88, 0x74, 0xB1, 0x9D, 0x5F], | |
620 | [0x00, 0x31, 0xCD, 0xBB, 0x9D, 0x5F, 0xFF, 0xDD, 0x1E]]), | |
621 | ("lanczos2", | |
622 | [[0xFF, 0xC0, 0x40, 0x4F, 0x68, 0x9B, 0x00, 0x35, 0xCD], | |
623 | [0x4F, 0x68, 0x9B, 0x96, 0x8D, 0x79, 0xB3, 0xA0, 0x64], | |
624 | [0x00, 0x35, 0xCD, 0xBE, 0xA1, 0x65, 0xFF, 0xDC, 0x28]]), | |
625 | ]; | |
626 | ||
627 | let in_pic = alloc_video_buffer(NAVideoInfo::new(2, 2, false, RGB24_FORMAT), 3).unwrap(); | |
628 | if let Some(ref mut vbuf) = in_pic.get_vbuf() { | |
629 | let stride = vbuf.get_stride(0); | |
630 | let data = vbuf.get_data_mut().unwrap(); | |
631 | for (dline, rline) in data.chunks_mut(stride).zip(IN_DATA.iter()) { | |
632 | dline[..6].copy_from_slice(rline); | |
633 | } | |
634 | } else { | |
635 | panic!("wrong format"); | |
636 | } | |
637 | let mut out_pic = alloc_video_buffer(NAVideoInfo::new(3, 3, false, RGB24_FORMAT), 3).unwrap(); | |
638 | let ifmt = get_scale_fmt_from_pic(&in_pic); | |
639 | let ofmt = get_scale_fmt_from_pic(&out_pic); | |
640 | for (method, ref_data) in TEST_DATA.iter() { | |
641 | fill_pic(&mut out_pic, 0); | |
642 | let mut scaler = NAScale::new_with_options(ifmt, ofmt, &[("scaler".to_string(), method.to_string())]).unwrap(); | |
643 | scaler.convert(&in_pic, &mut out_pic).unwrap(); | |
644 | let obuf = out_pic.get_vbuf().unwrap(); | |
645 | let ostride = obuf.get_stride(0); | |
646 | let odata = obuf.get_data(); | |
647 | for (oline, rline) in odata.chunks(ostride).zip(ref_data.iter()) { | |
648 | for (&a, &b) in oline.iter().zip(rline.iter()) { | |
649 | assert_eq!(a, b); | |
650 | } | |
651 | } | |
652 | } | |
653 | } | |
654 | } |