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1 | //! Packets and decoded frames functionality. | |
2 | use std::cmp::max; | |
3 | //use std::collections::HashMap; | |
4 | use std::fmt; | |
5 | use std::sync::Arc; | |
6 | pub use crate::formats::*; | |
7 | pub use crate::refs::*; | |
8 | ||
9 | /// Audio stream information. | |
10 | #[allow(dead_code)] | |
11 | #[derive(Clone,Copy,PartialEq)] | |
12 | pub struct NAAudioInfo { | |
13 | /// Sample rate. | |
14 | pub sample_rate: u32, | |
15 | /// Number of channels. | |
16 | pub channels: u8, | |
17 | /// Audio sample format. | |
18 | pub format: NASoniton, | |
19 | /// Length of one audio block in samples. | |
20 | pub block_len: usize, | |
21 | } | |
22 | ||
23 | impl NAAudioInfo { | |
24 | /// Constructs a new `NAAudioInfo` instance. | |
25 | pub fn new(sr: u32, ch: u8, fmt: NASoniton, bl: usize) -> Self { | |
26 | NAAudioInfo { sample_rate: sr, channels: ch, format: fmt, block_len: bl } | |
27 | } | |
28 | /// Returns audio sample rate. | |
29 | pub fn get_sample_rate(&self) -> u32 { self.sample_rate } | |
30 | /// Returns the number of channels. | |
31 | pub fn get_channels(&self) -> u8 { self.channels } | |
32 | /// Returns sample format. | |
33 | pub fn get_format(&self) -> NASoniton { self.format } | |
34 | /// Returns one audio block duration in samples. | |
35 | pub fn get_block_len(&self) -> usize { self.block_len } | |
36 | } | |
37 | ||
38 | impl fmt::Display for NAAudioInfo { | |
39 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
40 | write!(f, "{} Hz, {} ch", self.sample_rate, self.channels) | |
41 | } | |
42 | } | |
43 | ||
44 | /// Video stream information. | |
45 | #[allow(dead_code)] | |
46 | #[derive(Clone,Copy,PartialEq)] | |
47 | pub struct NAVideoInfo { | |
48 | /// Picture width. | |
49 | pub width: usize, | |
50 | /// Picture height. | |
51 | pub height: usize, | |
52 | /// Picture is stored downside up. | |
53 | pub flipped: bool, | |
54 | /// Picture pixel format. | |
55 | pub format: NAPixelFormaton, | |
56 | } | |
57 | ||
58 | impl NAVideoInfo { | |
59 | /// Constructs a new `NAVideoInfo` instance. | |
60 | pub fn new(w: usize, h: usize, flip: bool, fmt: NAPixelFormaton) -> Self { | |
61 | NAVideoInfo { width: w, height: h, flipped: flip, format: fmt } | |
62 | } | |
63 | /// Returns picture width. | |
64 | pub fn get_width(&self) -> usize { self.width as usize } | |
65 | /// Returns picture height. | |
66 | pub fn get_height(&self) -> usize { self.height as usize } | |
67 | /// Returns picture orientation. | |
68 | pub fn is_flipped(&self) -> bool { self.flipped } | |
69 | /// Returns picture pixel format. | |
70 | pub fn get_format(&self) -> NAPixelFormaton { self.format } | |
71 | /// Sets new picture width. | |
72 | pub fn set_width(&mut self, w: usize) { self.width = w; } | |
73 | /// Sets new picture height. | |
74 | pub fn set_height(&mut self, h: usize) { self.height = h; } | |
75 | } | |
76 | ||
77 | impl fmt::Display for NAVideoInfo { | |
78 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
79 | write!(f, "{}x{}", self.width, self.height) | |
80 | } | |
81 | } | |
82 | ||
83 | /// A list of possible stream information types. | |
84 | #[derive(Clone,Copy,PartialEq)] | |
85 | pub enum NACodecTypeInfo { | |
86 | /// No codec present. | |
87 | None, | |
88 | /// Audio codec information. | |
89 | Audio(NAAudioInfo), | |
90 | /// Video codec information. | |
91 | Video(NAVideoInfo), | |
92 | } | |
93 | ||
94 | impl NACodecTypeInfo { | |
95 | /// Returns video stream information. | |
96 | pub fn get_video_info(&self) -> Option<NAVideoInfo> { | |
97 | match *self { | |
98 | NACodecTypeInfo::Video(vinfo) => Some(vinfo), | |
99 | _ => None, | |
100 | } | |
101 | } | |
102 | /// Returns audio stream information. | |
103 | pub fn get_audio_info(&self) -> Option<NAAudioInfo> { | |
104 | match *self { | |
105 | NACodecTypeInfo::Audio(ainfo) => Some(ainfo), | |
106 | _ => None, | |
107 | } | |
108 | } | |
109 | /// Reports whether the current stream is video stream. | |
110 | pub fn is_video(&self) -> bool { | |
111 | match *self { | |
112 | NACodecTypeInfo::Video(_) => true, | |
113 | _ => false, | |
114 | } | |
115 | } | |
116 | /// Reports whether the current stream is audio stream. | |
117 | pub fn is_audio(&self) -> bool { | |
118 | match *self { | |
119 | NACodecTypeInfo::Audio(_) => true, | |
120 | _ => false, | |
121 | } | |
122 | } | |
123 | } | |
124 | ||
125 | impl fmt::Display for NACodecTypeInfo { | |
126 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
127 | let ret = match *self { | |
128 | NACodecTypeInfo::None => "".to_string(), | |
129 | NACodecTypeInfo::Audio(fmt) => format!("{}", fmt), | |
130 | NACodecTypeInfo::Video(fmt) => format!("{}", fmt), | |
131 | }; | |
132 | write!(f, "{}", ret) | |
133 | } | |
134 | } | |
135 | ||
136 | /// Decoded video frame. | |
137 | /// | |
138 | /// NihAV frames are stored in native type (8/16/32-bit elements) inside a single buffer. | |
139 | /// In case of image with several components those components are stored sequentially and can be accessed in the buffer starting at corresponding component offset. | |
140 | #[derive(Clone)] | |
141 | pub struct NAVideoBuffer<T> { | |
142 | info: NAVideoInfo, | |
143 | data: NABufferRef<Vec<T>>, | |
144 | offs: Vec<usize>, | |
145 | strides: Vec<usize>, | |
146 | } | |
147 | ||
148 | impl<T: Clone> NAVideoBuffer<T> { | |
149 | /// Returns the component offset (0 for all unavailable offsets). | |
150 | pub fn get_offset(&self, idx: usize) -> usize { | |
151 | if idx >= self.offs.len() { 0 } | |
152 | else { self.offs[idx] } | |
153 | } | |
154 | /// Returns picture info. | |
155 | pub fn get_info(&self) -> NAVideoInfo { self.info } | |
156 | /// Returns an immutable reference to the data. | |
157 | pub fn get_data(&self) -> &Vec<T> { self.data.as_ref() } | |
158 | /// Returns a mutable reference to the data. | |
159 | pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() } | |
160 | /// Returns the number of components in picture format. | |
161 | pub fn get_num_components(&self) -> usize { self.offs.len() } | |
162 | /// Creates a copy of current `NAVideoBuffer`. | |
163 | pub fn copy_buffer(&mut self) -> Self { | |
164 | let mut data: Vec<T> = Vec::with_capacity(self.data.len()); | |
165 | data.clone_from(self.data.as_ref()); | |
166 | let mut offs: Vec<usize> = Vec::with_capacity(self.offs.len()); | |
167 | offs.clone_from(&self.offs); | |
168 | let mut strides: Vec<usize> = Vec::with_capacity(self.strides.len()); | |
169 | strides.clone_from(&self.strides); | |
170 | NAVideoBuffer { info: self.info, data: NABufferRef::new(data), offs, strides } | |
171 | } | |
172 | /// Returns stride (distance between subsequent lines) for the requested component. | |
173 | pub fn get_stride(&self, idx: usize) -> usize { | |
174 | if idx >= self.strides.len() { return 0; } | |
175 | self.strides[idx] | |
176 | } | |
177 | /// Returns requested component dimensions. | |
178 | pub fn get_dimensions(&self, idx: usize) -> (usize, usize) { | |
179 | get_plane_size(&self.info, idx) | |
180 | } | |
181 | /// Converts current instance into buffer reference. | |
182 | pub fn into_ref(self) -> NABufferRef<Self> { | |
183 | NABufferRef::new(self) | |
184 | } | |
185 | } | |
186 | ||
187 | /// A specialised type for reference-counted `NAVideoBuffer`. | |
188 | pub type NAVideoBufferRef<T> = NABufferRef<NAVideoBuffer<T>>; | |
189 | ||
190 | /// Decoded audio frame. | |
191 | /// | |
192 | /// NihAV frames are stored in native type (8/16/32-bit elements) inside a single buffer. | |
193 | /// In case of planar audio samples for each channel are stored sequentially and can be accessed in the buffer starting at corresponding channel offset. | |
194 | #[derive(Clone)] | |
195 | pub struct NAAudioBuffer<T> { | |
196 | info: NAAudioInfo, | |
197 | data: NABufferRef<Vec<T>>, | |
198 | offs: Vec<usize>, | |
199 | stride: usize, | |
200 | step: usize, | |
201 | chmap: NAChannelMap, | |
202 | len: usize, | |
203 | } | |
204 | ||
205 | impl<T: Clone> NAAudioBuffer<T> { | |
206 | /// Returns the start position of requested channel data. | |
207 | pub fn get_offset(&self, idx: usize) -> usize { | |
208 | if idx >= self.offs.len() { 0 } | |
209 | else { self.offs[idx] } | |
210 | } | |
211 | /// Returns the distance between the start of one channel and the next one. | |
212 | pub fn get_stride(&self) -> usize { self.stride } | |
213 | /// Returns the distance between the samples in one channel. | |
214 | pub fn get_step(&self) -> usize { self.step } | |
215 | /// Returns audio format information. | |
216 | pub fn get_info(&self) -> NAAudioInfo { self.info } | |
217 | /// Returns channel map. | |
218 | pub fn get_chmap(&self) -> &NAChannelMap { &self.chmap } | |
219 | /// Returns an immutable reference to the data. | |
220 | pub fn get_data(&self) -> &Vec<T> { self.data.as_ref() } | |
221 | /// Returns a mutable reference to the data. | |
222 | pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() } | |
223 | /// Clones current `NAAudioBuffer` into a new one. | |
224 | pub fn copy_buffer(&mut self) -> Self { | |
225 | let mut data: Vec<T> = Vec::with_capacity(self.data.len()); | |
226 | data.clone_from(self.data.as_ref()); | |
227 | let mut offs: Vec<usize> = Vec::with_capacity(self.offs.len()); | |
228 | offs.clone_from(&self.offs); | |
229 | NAAudioBuffer { info: self.info, data: NABufferRef::new(data), offs, chmap: self.get_chmap().clone(), len: self.len, stride: self.stride, step: self.step } | |
230 | } | |
231 | /// Return the length of frame in samples. | |
232 | pub fn get_length(&self) -> usize { self.len } | |
233 | } | |
234 | ||
235 | impl NAAudioBuffer<u8> { | |
236 | /// Constructs a new `NAAudioBuffer` instance. | |
237 | pub fn new_from_buf(info: NAAudioInfo, data: NABufferRef<Vec<u8>>, chmap: NAChannelMap) -> Self { | |
238 | let len = data.len(); | |
239 | NAAudioBuffer { info, data, chmap, offs: Vec::new(), len, stride: 0, step: 0 } | |
240 | } | |
241 | } | |
242 | ||
243 | /// A list of possible decoded frame types. | |
244 | #[derive(Clone)] | |
245 | pub enum NABufferType { | |
246 | /// 8-bit video buffer. | |
247 | Video (NAVideoBufferRef<u8>), | |
248 | /// 16-bit video buffer (i.e. every component or packed pixel fits into 16 bits). | |
249 | Video16 (NAVideoBufferRef<u16>), | |
250 | /// 32-bit video buffer (i.e. every component or packed pixel fits into 32 bits). | |
251 | Video32 (NAVideoBufferRef<u32>), | |
252 | /// Packed video buffer. | |
253 | VideoPacked(NAVideoBufferRef<u8>), | |
254 | /// Audio buffer with 8-bit unsigned integer audio. | |
255 | AudioU8 (NAAudioBuffer<u8>), | |
256 | /// Audio buffer with 16-bit signed integer audio. | |
257 | AudioI16 (NAAudioBuffer<i16>), | |
258 | /// Audio buffer with 32-bit signed integer audio. | |
259 | AudioI32 (NAAudioBuffer<i32>), | |
260 | /// Audio buffer with 32-bit floating point audio. | |
261 | AudioF32 (NAAudioBuffer<f32>), | |
262 | /// Packed audio buffer. | |
263 | AudioPacked(NAAudioBuffer<u8>), | |
264 | /// Buffer with generic data (e.g. subtitles). | |
265 | Data (NABufferRef<Vec<u8>>), | |
266 | /// No data present. | |
267 | None, | |
268 | } | |
269 | ||
270 | impl NABufferType { | |
271 | /// Returns the offset to the requested component or channel. | |
272 | pub fn get_offset(&self, idx: usize) -> usize { | |
273 | match *self { | |
274 | NABufferType::Video(ref vb) => vb.get_offset(idx), | |
275 | NABufferType::Video16(ref vb) => vb.get_offset(idx), | |
276 | NABufferType::Video32(ref vb) => vb.get_offset(idx), | |
277 | NABufferType::VideoPacked(ref vb) => vb.get_offset(idx), | |
278 | NABufferType::AudioU8(ref ab) => ab.get_offset(idx), | |
279 | NABufferType::AudioI16(ref ab) => ab.get_offset(idx), | |
280 | NABufferType::AudioF32(ref ab) => ab.get_offset(idx), | |
281 | NABufferType::AudioPacked(ref ab) => ab.get_offset(idx), | |
282 | _ => 0, | |
283 | } | |
284 | } | |
285 | /// Returns information for video frames. | |
286 | pub fn get_video_info(&self) -> Option<NAVideoInfo> { | |
287 | match *self { | |
288 | NABufferType::Video(ref vb) => Some(vb.get_info()), | |
289 | NABufferType::Video16(ref vb) => Some(vb.get_info()), | |
290 | NABufferType::Video32(ref vb) => Some(vb.get_info()), | |
291 | NABufferType::VideoPacked(ref vb) => Some(vb.get_info()), | |
292 | _ => None, | |
293 | } | |
294 | } | |
295 | /// Returns reference to 8-bit (or packed) video buffer. | |
296 | pub fn get_vbuf(&self) -> Option<NAVideoBufferRef<u8>> { | |
297 | match *self { | |
298 | NABufferType::Video(ref vb) => Some(vb.clone()), | |
299 | NABufferType::VideoPacked(ref vb) => Some(vb.clone()), | |
300 | _ => None, | |
301 | } | |
302 | } | |
303 | /// Returns reference to 16-bit video buffer. | |
304 | pub fn get_vbuf16(&self) -> Option<NAVideoBufferRef<u16>> { | |
305 | match *self { | |
306 | NABufferType::Video16(ref vb) => Some(vb.clone()), | |
307 | _ => None, | |
308 | } | |
309 | } | |
310 | /// Returns reference to 32-bit video buffer. | |
311 | pub fn get_vbuf32(&self) -> Option<NAVideoBufferRef<u32>> { | |
312 | match *self { | |
313 | NABufferType::Video32(ref vb) => Some(vb.clone()), | |
314 | _ => None, | |
315 | } | |
316 | } | |
317 | /// Returns information for audio frames. | |
318 | pub fn get_audio_info(&self) -> Option<NAAudioInfo> { | |
319 | match *self { | |
320 | NABufferType::AudioU8(ref ab) => Some(ab.get_info()), | |
321 | NABufferType::AudioI16(ref ab) => Some(ab.get_info()), | |
322 | NABufferType::AudioI32(ref ab) => Some(ab.get_info()), | |
323 | NABufferType::AudioF32(ref ab) => Some(ab.get_info()), | |
324 | NABufferType::AudioPacked(ref ab) => Some(ab.get_info()), | |
325 | _ => None, | |
326 | } | |
327 | } | |
328 | /// Returns audio channel map. | |
329 | pub fn get_chmap(&self) -> Option<&NAChannelMap> { | |
330 | match *self { | |
331 | NABufferType::AudioU8(ref ab) => Some(ab.get_chmap()), | |
332 | NABufferType::AudioI16(ref ab) => Some(ab.get_chmap()), | |
333 | NABufferType::AudioI32(ref ab) => Some(ab.get_chmap()), | |
334 | NABufferType::AudioF32(ref ab) => Some(ab.get_chmap()), | |
335 | NABufferType::AudioPacked(ref ab) => Some(ab.get_chmap()), | |
336 | _ => None, | |
337 | } | |
338 | } | |
339 | /// Returns audio frame duration in samples. | |
340 | pub fn get_audio_length(&self) -> usize { | |
341 | match *self { | |
342 | NABufferType::AudioU8(ref ab) => ab.get_length(), | |
343 | NABufferType::AudioI16(ref ab) => ab.get_length(), | |
344 | NABufferType::AudioI32(ref ab) => ab.get_length(), | |
345 | NABufferType::AudioF32(ref ab) => ab.get_length(), | |
346 | NABufferType::AudioPacked(ref ab) => ab.get_length(), | |
347 | _ => 0, | |
348 | } | |
349 | } | |
350 | /// Returns the distance between starts of two channels. | |
351 | pub fn get_audio_stride(&self) -> usize { | |
352 | match *self { | |
353 | NABufferType::AudioU8(ref ab) => ab.get_stride(), | |
354 | NABufferType::AudioI16(ref ab) => ab.get_stride(), | |
355 | NABufferType::AudioI32(ref ab) => ab.get_stride(), | |
356 | NABufferType::AudioF32(ref ab) => ab.get_stride(), | |
357 | NABufferType::AudioPacked(ref ab) => ab.get_stride(), | |
358 | _ => 0, | |
359 | } | |
360 | } | |
361 | /// Returns the distance between two samples in one channel. | |
362 | pub fn get_audio_step(&self) -> usize { | |
363 | match *self { | |
364 | NABufferType::AudioU8(ref ab) => ab.get_step(), | |
365 | NABufferType::AudioI16(ref ab) => ab.get_step(), | |
366 | NABufferType::AudioI32(ref ab) => ab.get_step(), | |
367 | NABufferType::AudioF32(ref ab) => ab.get_step(), | |
368 | NABufferType::AudioPacked(ref ab) => ab.get_step(), | |
369 | _ => 0, | |
370 | } | |
371 | } | |
372 | /// Returns reference to 8-bit (or packed) audio buffer. | |
373 | pub fn get_abuf_u8(&self) -> Option<NAAudioBuffer<u8>> { | |
374 | match *self { | |
375 | NABufferType::AudioU8(ref ab) => Some(ab.clone()), | |
376 | NABufferType::AudioPacked(ref ab) => Some(ab.clone()), | |
377 | _ => None, | |
378 | } | |
379 | } | |
380 | /// Returns reference to 16-bit audio buffer. | |
381 | pub fn get_abuf_i16(&self) -> Option<NAAudioBuffer<i16>> { | |
382 | match *self { | |
383 | NABufferType::AudioI16(ref ab) => Some(ab.clone()), | |
384 | _ => None, | |
385 | } | |
386 | } | |
387 | /// Returns reference to 32-bit integer audio buffer. | |
388 | pub fn get_abuf_i32(&self) -> Option<NAAudioBuffer<i32>> { | |
389 | match *self { | |
390 | NABufferType::AudioI32(ref ab) => Some(ab.clone()), | |
391 | _ => None, | |
392 | } | |
393 | } | |
394 | /// Returns reference to 32-bit floating point audio buffer. | |
395 | pub fn get_abuf_f32(&self) -> Option<NAAudioBuffer<f32>> { | |
396 | match *self { | |
397 | NABufferType::AudioF32(ref ab) => Some(ab.clone()), | |
398 | _ => None, | |
399 | } | |
400 | } | |
401 | } | |
402 | ||
403 | const NA_SIMPLE_VFRAME_COMPONENTS: usize = 4; | |
404 | /// Simplified decoded frame data. | |
405 | pub struct NASimpleVideoFrame<'a, T: Copy> { | |
406 | /// Widths of each picture component. | |
407 | pub width: [usize; NA_SIMPLE_VFRAME_COMPONENTS], | |
408 | /// Heights of each picture component. | |
409 | pub height: [usize; NA_SIMPLE_VFRAME_COMPONENTS], | |
410 | /// Orientation (upside-down or downside-up) flag. | |
411 | pub flip: bool, | |
412 | /// Strides for each component. | |
413 | pub stride: [usize; NA_SIMPLE_VFRAME_COMPONENTS], | |
414 | /// Start of each component. | |
415 | pub offset: [usize; NA_SIMPLE_VFRAME_COMPONENTS], | |
416 | /// Number of components. | |
417 | pub components: usize, | |
418 | /// Pointer to the picture pixel data. | |
419 | pub data: &'a mut [T], | |
420 | } | |
421 | ||
422 | impl<'a, T:Copy> NASimpleVideoFrame<'a, T> { | |
423 | /// Constructs a new instance of `NASimpleVideoFrame` from `NAVideoBuffer`. | |
424 | pub fn from_video_buf(vbuf: &'a mut NAVideoBuffer<T>) -> Option<Self> { | |
425 | let vinfo = vbuf.get_info(); | |
426 | let components = vinfo.format.components as usize; | |
427 | if components > NA_SIMPLE_VFRAME_COMPONENTS { | |
428 | return None; | |
429 | } | |
430 | let mut w: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS]; | |
431 | let mut h: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS]; | |
432 | let mut s: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS]; | |
433 | let mut o: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS]; | |
434 | for comp in 0..components { | |
435 | let (width, height) = vbuf.get_dimensions(comp); | |
436 | w[comp] = width; | |
437 | h[comp] = height; | |
438 | s[comp] = vbuf.get_stride(comp); | |
439 | o[comp] = vbuf.get_offset(comp); | |
440 | } | |
441 | let flip = vinfo.flipped; | |
442 | Some(NASimpleVideoFrame { | |
443 | width: w, | |
444 | height: h, | |
445 | flip, | |
446 | stride: s, | |
447 | offset: o, | |
448 | components, | |
449 | data: vbuf.data.as_mut_slice(), | |
450 | }) | |
451 | } | |
452 | } | |
453 | ||
454 | /// A list of possible frame allocator errors. | |
455 | #[derive(Debug,Clone,Copy,PartialEq)] | |
456 | pub enum AllocatorError { | |
457 | /// Requested picture dimensions are too large. | |
458 | TooLargeDimensions, | |
459 | /// Invalid input format. | |
460 | FormatError, | |
461 | } | |
462 | ||
463 | /// Constructs a new video buffer with requested format. | |
464 | /// | |
465 | /// `align` is power of two alignment for image. E.g. the value of 5 means that frame dimensions will be padded to be multiple of 32. | |
466 | pub fn alloc_video_buffer(vinfo: NAVideoInfo, align: u8) -> Result<NABufferType, AllocatorError> { | |
467 | let fmt = &vinfo.format; | |
468 | let mut new_size: usize = 0; | |
469 | let mut offs: Vec<usize> = Vec::new(); | |
470 | let mut strides: Vec<usize> = Vec::new(); | |
471 | ||
472 | for i in 0..fmt.get_num_comp() { | |
473 | if fmt.get_chromaton(i) == None { return Err(AllocatorError::FormatError); } | |
474 | } | |
475 | ||
476 | let align_mod = ((1 << align) as usize) - 1; | |
477 | let width = ((vinfo.width as usize) + align_mod) & !align_mod; | |
478 | let height = ((vinfo.height as usize) + align_mod) & !align_mod; | |
479 | let mut max_depth = 0; | |
480 | let mut all_packed = true; | |
481 | let mut all_bytealigned = true; | |
482 | for i in 0..fmt.get_num_comp() { | |
483 | let ochr = fmt.get_chromaton(i); | |
484 | if ochr.is_none() { continue; } | |
485 | let chr = ochr.unwrap(); | |
486 | if !chr.is_packed() { | |
487 | all_packed = false; | |
488 | } else if ((chr.get_shift() + chr.get_depth()) & 7) != 0 { | |
489 | all_bytealigned = false; | |
490 | } | |
491 | max_depth = max(max_depth, chr.get_depth()); | |
492 | } | |
493 | let unfit_elem_size = match fmt.get_elem_size() { | |
494 | 2 | 4 => false, | |
495 | _ => true, | |
496 | }; | |
497 | ||
498 | //todo semi-packed like NV12 | |
499 | if fmt.is_paletted() { | |
500 | //todo various-sized palettes? | |
501 | let stride = vinfo.get_format().get_chromaton(0).unwrap().get_linesize(width); | |
502 | let pic_sz = stride.checked_mul(height); | |
503 | if pic_sz == None { return Err(AllocatorError::TooLargeDimensions); } | |
504 | let pal_size = 256 * (fmt.get_elem_size() as usize); | |
505 | let new_size = pic_sz.unwrap().checked_add(pal_size); | |
506 | if new_size == None { return Err(AllocatorError::TooLargeDimensions); } | |
507 | offs.push(0); | |
508 | offs.push(stride * height); | |
509 | strides.push(stride); | |
510 | let data: Vec<u8> = vec![0; new_size.unwrap()]; | |
511 | let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
512 | Ok(NABufferType::Video(buf.into_ref())) | |
513 | } else if !all_packed { | |
514 | for i in 0..fmt.get_num_comp() { | |
515 | let ochr = fmt.get_chromaton(i); | |
516 | if ochr.is_none() { continue; } | |
517 | let chr = ochr.unwrap(); | |
518 | offs.push(new_size as usize); | |
519 | let stride = chr.get_linesize(width); | |
520 | let cur_h = chr.get_height(height); | |
521 | let cur_sz = stride.checked_mul(cur_h); | |
522 | if cur_sz == None { return Err(AllocatorError::TooLargeDimensions); } | |
523 | let new_sz = new_size.checked_add(cur_sz.unwrap()); | |
524 | if new_sz == None { return Err(AllocatorError::TooLargeDimensions); } | |
525 | new_size = new_sz.unwrap(); | |
526 | strides.push(stride); | |
527 | } | |
528 | if max_depth <= 8 { | |
529 | let data: Vec<u8> = vec![0; new_size]; | |
530 | let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
531 | Ok(NABufferType::Video(buf.into_ref())) | |
532 | } else if max_depth <= 16 { | |
533 | let data: Vec<u16> = vec![0; new_size]; | |
534 | let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
535 | Ok(NABufferType::Video16(buf.into_ref())) | |
536 | } else { | |
537 | let data: Vec<u32> = vec![0; new_size]; | |
538 | let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
539 | Ok(NABufferType::Video32(buf.into_ref())) | |
540 | } | |
541 | } else if all_bytealigned || unfit_elem_size { | |
542 | let elem_sz = fmt.get_elem_size(); | |
543 | let line_sz = width.checked_mul(elem_sz as usize); | |
544 | if line_sz == None { return Err(AllocatorError::TooLargeDimensions); } | |
545 | let new_sz = line_sz.unwrap().checked_mul(height); | |
546 | if new_sz == None { return Err(AllocatorError::TooLargeDimensions); } | |
547 | new_size = new_sz.unwrap(); | |
548 | let data: Vec<u8> = vec![0; new_size]; | |
549 | strides.push(line_sz.unwrap()); | |
550 | let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
551 | Ok(NABufferType::VideoPacked(buf.into_ref())) | |
552 | } else { | |
553 | let elem_sz = fmt.get_elem_size(); | |
554 | let new_sz = width.checked_mul(height); | |
555 | if new_sz == None { return Err(AllocatorError::TooLargeDimensions); } | |
556 | new_size = new_sz.unwrap(); | |
557 | match elem_sz { | |
558 | 2 => { | |
559 | let data: Vec<u16> = vec![0; new_size]; | |
560 | strides.push(width); | |
561 | let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
562 | Ok(NABufferType::Video16(buf.into_ref())) | |
563 | }, | |
564 | 4 => { | |
565 | let data: Vec<u32> = vec![0; new_size]; | |
566 | strides.push(width); | |
567 | let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs, strides }; | |
568 | Ok(NABufferType::Video32(buf.into_ref())) | |
569 | }, | |
570 | _ => unreachable!(), | |
571 | } | |
572 | } | |
573 | } | |
574 | ||
575 | /// Constructs a new audio buffer for the requested format and length. | |
576 | #[allow(clippy::collapsible_if)] | |
577 | pub fn alloc_audio_buffer(ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<NABufferType, AllocatorError> { | |
578 | let mut offs: Vec<usize> = Vec::new(); | |
579 | if ainfo.format.is_planar() || ((ainfo.format.get_bits() % 8) == 0) { | |
580 | let len = nsamples.checked_mul(ainfo.channels as usize); | |
581 | if len == None { return Err(AllocatorError::TooLargeDimensions); } | |
582 | let length = len.unwrap(); | |
583 | let stride; | |
584 | let step; | |
585 | if ainfo.format.is_planar() { | |
586 | stride = nsamples; | |
587 | step = 1; | |
588 | for i in 0..ainfo.channels { | |
589 | offs.push((i as usize) * stride); | |
590 | } | |
591 | } else { | |
592 | stride = 1; | |
593 | step = ainfo.channels as usize; | |
594 | for i in 0..ainfo.channels { | |
595 | offs.push(i as usize); | |
596 | } | |
597 | } | |
598 | if ainfo.format.is_float() { | |
599 | if ainfo.format.get_bits() == 32 { | |
600 | let data: Vec<f32> = vec![0.0; length]; | |
601 | let buf: NAAudioBuffer<f32> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step }; | |
602 | Ok(NABufferType::AudioF32(buf)) | |
603 | } else { | |
604 | Err(AllocatorError::TooLargeDimensions) | |
605 | } | |
606 | } else { | |
607 | if ainfo.format.get_bits() == 8 && !ainfo.format.is_signed() { | |
608 | let data: Vec<u8> = vec![0; length]; | |
609 | let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step }; | |
610 | Ok(NABufferType::AudioU8(buf)) | |
611 | } else if ainfo.format.get_bits() == 16 && ainfo.format.is_signed() { | |
612 | let data: Vec<i16> = vec![0; length]; | |
613 | let buf: NAAudioBuffer<i16> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride, step }; | |
614 | Ok(NABufferType::AudioI16(buf)) | |
615 | } else { | |
616 | Err(AllocatorError::TooLargeDimensions) | |
617 | } | |
618 | } | |
619 | } else { | |
620 | let len = nsamples.checked_mul(ainfo.channels as usize); | |
621 | if len == None { return Err(AllocatorError::TooLargeDimensions); } | |
622 | let length = ainfo.format.get_audio_size(len.unwrap() as u64); | |
623 | let data: Vec<u8> = vec![0; length]; | |
624 | let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs, chmap, len: nsamples, stride: 0, step: 0 }; | |
625 | Ok(NABufferType::AudioPacked(buf)) | |
626 | } | |
627 | } | |
628 | ||
629 | /// Constructs a new buffer for generic data. | |
630 | pub fn alloc_data_buffer(size: usize) -> Result<NABufferType, AllocatorError> { | |
631 | let data: Vec<u8> = vec![0; size]; | |
632 | let buf: NABufferRef<Vec<u8>> = NABufferRef::new(data); | |
633 | Ok(NABufferType::Data(buf)) | |
634 | } | |
635 | ||
636 | /// Creates a clone of current buffer. | |
637 | pub fn copy_buffer(buf: NABufferType) -> NABufferType { | |
638 | buf.clone() | |
639 | } | |
640 | ||
641 | /// Video frame pool. | |
642 | /// | |
643 | /// This structure allows codec to effectively reuse old frames instead of allocating and de-allocating frames every time. | |
644 | /// Caller can also reserve some frames for its own purposes e.g. display queue. | |
645 | pub struct NAVideoBufferPool<T:Copy> { | |
646 | pool: Vec<NAVideoBufferRef<T>>, | |
647 | max_len: usize, | |
648 | add_len: usize, | |
649 | } | |
650 | ||
651 | impl<T:Copy> NAVideoBufferPool<T> { | |
652 | /// Constructs a new `NAVideoBufferPool` instance. | |
653 | pub fn new(max_len: usize) -> Self { | |
654 | Self { | |
655 | pool: Vec::with_capacity(max_len), | |
656 | max_len, | |
657 | add_len: 0, | |
658 | } | |
659 | } | |
660 | /// Sets the number of buffers reserved for the user. | |
661 | pub fn set_dec_bufs(&mut self, add_len: usize) { | |
662 | self.add_len = add_len; | |
663 | } | |
664 | /// Returns an unused buffer from the pool. | |
665 | pub fn get_free(&mut self) -> Option<NAVideoBufferRef<T>> { | |
666 | for e in self.pool.iter() { | |
667 | if e.get_num_refs() == 1 { | |
668 | return Some(e.clone()); | |
669 | } | |
670 | } | |
671 | None | |
672 | } | |
673 | /// Clones provided frame data into a free pool frame. | |
674 | pub fn get_copy(&mut self, rbuf: &NAVideoBufferRef<T>) -> Option<NAVideoBufferRef<T>> { | |
675 | let mut dbuf = self.get_free()?; | |
676 | dbuf.data.copy_from_slice(&rbuf.data); | |
677 | Some(dbuf) | |
678 | } | |
679 | /// Clears the pool from all frames. | |
680 | pub fn reset(&mut self) { | |
681 | self.pool.truncate(0); | |
682 | } | |
683 | } | |
684 | ||
685 | impl NAVideoBufferPool<u8> { | |
686 | /// Allocates the target amount of video frames using [`alloc_video_buffer`]. | |
687 | /// | |
688 | /// [`alloc_video_buffer`]: ./fn.alloc_video_buffer.html | |
689 | pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> { | |
690 | let nbufs = self.max_len + self.add_len - self.pool.len(); | |
691 | for _ in 0..nbufs { | |
692 | let vbuf = alloc_video_buffer(vinfo, align)?; | |
693 | if let NABufferType::Video(buf) = vbuf { | |
694 | self.pool.push(buf); | |
695 | } else if let NABufferType::VideoPacked(buf) = vbuf { | |
696 | self.pool.push(buf); | |
697 | } else { | |
698 | return Err(AllocatorError::FormatError); | |
699 | } | |
700 | } | |
701 | Ok(()) | |
702 | } | |
703 | } | |
704 | ||
705 | impl NAVideoBufferPool<u16> { | |
706 | /// Allocates the target amount of video frames using [`alloc_video_buffer`]. | |
707 | /// | |
708 | /// [`alloc_video_buffer`]: ./fn.alloc_video_buffer.html | |
709 | pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> { | |
710 | let nbufs = self.max_len + self.add_len - self.pool.len(); | |
711 | for _ in 0..nbufs { | |
712 | let vbuf = alloc_video_buffer(vinfo, align)?; | |
713 | if let NABufferType::Video16(buf) = vbuf { | |
714 | self.pool.push(buf); | |
715 | } else { | |
716 | return Err(AllocatorError::FormatError); | |
717 | } | |
718 | } | |
719 | Ok(()) | |
720 | } | |
721 | } | |
722 | ||
723 | impl NAVideoBufferPool<u32> { | |
724 | /// Allocates the target amount of video frames using [`alloc_video_buffer`]. | |
725 | /// | |
726 | /// [`alloc_video_buffer`]: ./fn.alloc_video_buffer.html | |
727 | pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> { | |
728 | let nbufs = self.max_len + self.add_len - self.pool.len(); | |
729 | for _ in 0..nbufs { | |
730 | let vbuf = alloc_video_buffer(vinfo, align)?; | |
731 | if let NABufferType::Video32(buf) = vbuf { | |
732 | self.pool.push(buf); | |
733 | } else { | |
734 | return Err(AllocatorError::FormatError); | |
735 | } | |
736 | } | |
737 | Ok(()) | |
738 | } | |
739 | } | |
740 | ||
741 | /// Information about codec contained in a stream. | |
742 | #[allow(dead_code)] | |
743 | #[derive(Clone)] | |
744 | pub struct NACodecInfo { | |
745 | name: &'static str, | |
746 | properties: NACodecTypeInfo, | |
747 | extradata: Option<Arc<Vec<u8>>>, | |
748 | } | |
749 | ||
750 | /// A specialised type for reference-counted `NACodecInfo`. | |
751 | pub type NACodecInfoRef = Arc<NACodecInfo>; | |
752 | ||
753 | impl NACodecInfo { | |
754 | /// Constructs a new instance of `NACodecInfo`. | |
755 | pub fn new(name: &'static str, p: NACodecTypeInfo, edata: Option<Vec<u8>>) -> Self { | |
756 | let extradata = match edata { | |
757 | None => None, | |
758 | Some(vec) => Some(Arc::new(vec)), | |
759 | }; | |
760 | NACodecInfo { name, properties: p, extradata } | |
761 | } | |
762 | /// Constructs a new reference-counted instance of `NACodecInfo`. | |
763 | pub fn new_ref(name: &'static str, p: NACodecTypeInfo, edata: Option<Arc<Vec<u8>>>) -> Self { | |
764 | NACodecInfo { name, properties: p, extradata: edata } | |
765 | } | |
766 | /// Converts current instance into a reference-counted one. | |
767 | pub fn into_ref(self) -> NACodecInfoRef { Arc::new(self) } | |
768 | /// Returns codec information. | |
769 | pub fn get_properties(&self) -> NACodecTypeInfo { self.properties } | |
770 | /// Returns additional initialisation data required by the codec. | |
771 | pub fn get_extradata(&self) -> Option<Arc<Vec<u8>>> { | |
772 | if let Some(ref vec) = self.extradata { return Some(vec.clone()); } | |
773 | None | |
774 | } | |
775 | /// Returns codec name. | |
776 | pub fn get_name(&self) -> &'static str { self.name } | |
777 | /// Reports whether it is a video codec. | |
778 | pub fn is_video(&self) -> bool { | |
779 | if let NACodecTypeInfo::Video(_) = self.properties { return true; } | |
780 | false | |
781 | } | |
782 | /// Reports whether it is an audio codec. | |
783 | pub fn is_audio(&self) -> bool { | |
784 | if let NACodecTypeInfo::Audio(_) = self.properties { return true; } | |
785 | false | |
786 | } | |
787 | /// Constructs a new empty reference-counted instance of `NACodecInfo`. | |
788 | pub fn new_dummy() -> Arc<Self> { | |
789 | Arc::new(DUMMY_CODEC_INFO) | |
790 | } | |
791 | /// Updates codec infomation. | |
792 | pub fn replace_info(&self, p: NACodecTypeInfo) -> Arc<Self> { | |
793 | Arc::new(NACodecInfo { name: self.name, properties: p, extradata: self.extradata.clone() }) | |
794 | } | |
795 | } | |
796 | ||
797 | impl Default for NACodecInfo { | |
798 | fn default() -> Self { DUMMY_CODEC_INFO } | |
799 | } | |
800 | ||
801 | impl fmt::Display for NACodecInfo { | |
802 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
803 | let edata = match self.extradata.clone() { | |
804 | None => "no extradata".to_string(), | |
805 | Some(v) => format!("{} byte(s) of extradata", v.len()), | |
806 | }; | |
807 | write!(f, "{}: {} {}", self.name, self.properties, edata) | |
808 | } | |
809 | } | |
810 | ||
811 | /// Default empty codec information. | |
812 | pub const DUMMY_CODEC_INFO: NACodecInfo = NACodecInfo { | |
813 | name: "none", | |
814 | properties: NACodecTypeInfo::None, | |
815 | extradata: None }; | |
816 | ||
817 | /// A list of accepted option values. | |
818 | #[derive(Debug,Clone)] | |
819 | pub enum NAValue { | |
820 | /// Empty value. | |
821 | None, | |
822 | /// Integer value. | |
823 | Int(i32), | |
824 | /// Long integer value. | |
825 | Long(i64), | |
826 | /// String value. | |
827 | String(String), | |
828 | /// Binary data value. | |
829 | Data(Arc<Vec<u8>>), | |
830 | } | |
831 | ||
832 | /// A list of recognized frame types. | |
833 | #[derive(Debug,Clone,Copy,PartialEq)] | |
834 | #[allow(dead_code)] | |
835 | pub enum FrameType { | |
836 | /// Intra frame type. | |
837 | I, | |
838 | /// Inter frame type. | |
839 | P, | |
840 | /// Bidirectionally predicted frame. | |
841 | B, | |
842 | /// Skip frame. | |
843 | /// | |
844 | /// When such frame is encountered then last frame should be used again if it is needed. | |
845 | Skip, | |
846 | /// Some other frame type. | |
847 | Other, | |
848 | } | |
849 | ||
850 | impl fmt::Display for FrameType { | |
851 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
852 | match *self { | |
853 | FrameType::I => write!(f, "I"), | |
854 | FrameType::P => write!(f, "P"), | |
855 | FrameType::B => write!(f, "B"), | |
856 | FrameType::Skip => write!(f, "skip"), | |
857 | FrameType::Other => write!(f, "x"), | |
858 | } | |
859 | } | |
860 | } | |
861 | ||
862 | /// Timestamp information. | |
863 | #[derive(Debug,Clone,Copy)] | |
864 | pub struct NATimeInfo { | |
865 | /// Presentation timestamp. | |
866 | pub pts: Option<u64>, | |
867 | /// Decode timestamp. | |
868 | pub dts: Option<u64>, | |
869 | /// Duration (in timebase units). | |
870 | pub duration: Option<u64>, | |
871 | /// Timebase numerator. | |
872 | pub tb_num: u32, | |
873 | /// Timebase denominator. | |
874 | pub tb_den: u32, | |
875 | } | |
876 | ||
877 | impl NATimeInfo { | |
878 | /// Constructs a new `NATimeInfo` instance. | |
879 | pub fn new(pts: Option<u64>, dts: Option<u64>, duration: Option<u64>, tb_num: u32, tb_den: u32) -> Self { | |
880 | NATimeInfo { pts, dts, duration, tb_num, tb_den } | |
881 | } | |
882 | /// Returns presentation timestamp. | |
883 | pub fn get_pts(&self) -> Option<u64> { self.pts } | |
884 | /// Returns decoding timestamp. | |
885 | pub fn get_dts(&self) -> Option<u64> { self.dts } | |
886 | /// Returns duration. | |
887 | pub fn get_duration(&self) -> Option<u64> { self.duration } | |
888 | /// Sets new presentation timestamp. | |
889 | pub fn set_pts(&mut self, pts: Option<u64>) { self.pts = pts; } | |
890 | /// Sets new decoding timestamp. | |
891 | pub fn set_dts(&mut self, dts: Option<u64>) { self.dts = dts; } | |
892 | /// Sets new duration. | |
893 | pub fn set_duration(&mut self, dur: Option<u64>) { self.duration = dur; } | |
894 | ||
895 | /// Converts time in given scale into timestamp in given base. | |
896 | pub fn time_to_ts(time: u64, base: u64, tb_num: u32, tb_den: u32) -> u64 { | |
897 | let tb_num = tb_num as u64; | |
898 | let tb_den = tb_den as u64; | |
899 | let tmp = time.checked_mul(tb_num); | |
900 | if let Some(tmp) = tmp { | |
901 | tmp / base / tb_den | |
902 | } else { | |
903 | let tmp = time.checked_mul(tb_num); | |
904 | if let Some(tmp) = tmp { | |
905 | tmp / base / tb_den | |
906 | } else { | |
907 | let coarse = time / base; | |
908 | let tmp = coarse.checked_mul(tb_num); | |
909 | if let Some(tmp) = tmp { | |
910 | tmp / tb_den | |
911 | } else { | |
912 | (coarse / tb_den) * tb_num | |
913 | } | |
914 | } | |
915 | } | |
916 | } | |
917 | /// Converts timestamp in given base into time in given scale. | |
918 | pub fn ts_to_time(ts: u64, base: u64, tb_num: u32, tb_den: u32) -> u64 { | |
919 | let tb_num = tb_num as u64; | |
920 | let tb_den = tb_den as u64; | |
921 | let tmp = ts.checked_mul(base); | |
922 | if let Some(tmp) = tmp { | |
923 | let tmp2 = tmp.checked_mul(tb_num); | |
924 | if let Some(tmp2) = tmp2 { | |
925 | tmp2 / tb_den | |
926 | } else { | |
927 | (tmp / tb_den) * tb_num | |
928 | } | |
929 | } else { | |
930 | let tmp = ts.checked_mul(tb_num); | |
931 | if let Some(tmp) = tmp { | |
932 | (tmp / tb_den) * base | |
933 | } else { | |
934 | (ts / tb_den) * base * tb_num | |
935 | } | |
936 | } | |
937 | } | |
938 | } | |
939 | ||
940 | /// Decoded frame information. | |
941 | #[allow(dead_code)] | |
942 | #[derive(Clone)] | |
943 | pub struct NAFrame { | |
944 | /// Frame timestamp. | |
945 | pub ts: NATimeInfo, | |
946 | /// Frame ID. | |
947 | pub id: i64, | |
948 | buffer: NABufferType, | |
949 | info: NACodecInfoRef, | |
950 | /// Frame type. | |
951 | pub frame_type: FrameType, | |
952 | /// Keyframe flag. | |
953 | pub key: bool, | |
954 | // options: HashMap<String, NAValue>, | |
955 | } | |
956 | ||
957 | /// A specialised type for reference-counted `NAFrame`. | |
958 | pub type NAFrameRef = Arc<NAFrame>; | |
959 | ||
960 | fn get_plane_size(info: &NAVideoInfo, idx: usize) -> (usize, usize) { | |
961 | let chromaton = info.get_format().get_chromaton(idx); | |
962 | if chromaton.is_none() { return (0, 0); } | |
963 | let (hs, vs) = chromaton.unwrap().get_subsampling(); | |
964 | let w = (info.get_width() + ((1 << hs) - 1)) >> hs; | |
965 | let h = (info.get_height() + ((1 << vs) - 1)) >> vs; | |
966 | (w, h) | |
967 | } | |
968 | ||
969 | impl NAFrame { | |
970 | /// Constructs a new `NAFrame` instance. | |
971 | pub fn new(ts: NATimeInfo, | |
972 | ftype: FrameType, | |
973 | keyframe: bool, | |
974 | info: NACodecInfoRef, | |
975 | /*options: HashMap<String, NAValue>,*/ | |
976 | buffer: NABufferType) -> Self { | |
977 | NAFrame { ts, id: 0, buffer, info, frame_type: ftype, key: keyframe/*, options*/ } | |
978 | } | |
979 | /// Returns frame format information. | |
980 | pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() } | |
981 | /// Returns frame type. | |
982 | pub fn get_frame_type(&self) -> FrameType { self.frame_type } | |
983 | /// Reports whether the frame is a keyframe. | |
984 | pub fn is_keyframe(&self) -> bool { self.key } | |
985 | /// Sets new frame type. | |
986 | pub fn set_frame_type(&mut self, ftype: FrameType) { self.frame_type = ftype; } | |
987 | /// Sets keyframe flag. | |
988 | pub fn set_keyframe(&mut self, key: bool) { self.key = key; } | |
989 | /// Returns frame timestamp. | |
990 | pub fn get_time_information(&self) -> NATimeInfo { self.ts } | |
991 | /// Returns frame presentation time. | |
992 | pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() } | |
993 | /// Returns frame decoding time. | |
994 | pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() } | |
995 | /// Returns picture ID. | |
996 | pub fn get_id(&self) -> i64 { self.id } | |
997 | /// Returns frame display duration. | |
998 | pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() } | |
999 | /// Sets new presentation timestamp. | |
1000 | pub fn set_pts(&mut self, pts: Option<u64>) { self.ts.set_pts(pts); } | |
1001 | /// Sets new decoding timestamp. | |
1002 | pub fn set_dts(&mut self, dts: Option<u64>) { self.ts.set_dts(dts); } | |
1003 | /// Sets new picture ID. | |
1004 | pub fn set_id(&mut self, id: i64) { self.id = id; } | |
1005 | /// Sets new duration. | |
1006 | pub fn set_duration(&mut self, dur: Option<u64>) { self.ts.set_duration(dur); } | |
1007 | ||
1008 | /// Returns a reference to the frame data. | |
1009 | pub fn get_buffer(&self) -> NABufferType { self.buffer.clone() } | |
1010 | ||
1011 | /// Converts current instance into a reference-counted one. | |
1012 | pub fn into_ref(self) -> NAFrameRef { Arc::new(self) } | |
1013 | ||
1014 | /// Creates new frame with metadata from `NAPacket`. | |
1015 | pub fn new_from_pkt(pkt: &NAPacket, info: NACodecInfoRef, buf: NABufferType) -> NAFrame { | |
1016 | NAFrame::new(pkt.ts, FrameType::Other, pkt.keyframe, info, /*HashMap::new(),*/ buf) | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | impl fmt::Display for NAFrame { | |
1021 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
1022 | let mut ostr = format!("frame type {}", self.frame_type); | |
1023 | if let Some(pts) = self.ts.pts { ostr = format!("{} pts {}", ostr, pts); } | |
1024 | if let Some(dts) = self.ts.dts { ostr = format!("{} dts {}", ostr, dts); } | |
1025 | if let Some(dur) = self.ts.duration { ostr = format!("{} duration {}", ostr, dur); } | |
1026 | if self.key { ostr = format!("{} kf", ostr); } | |
1027 | write!(f, "[{}]", ostr) | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | /// A list of possible stream types. | |
1032 | #[derive(Debug,Clone,Copy,PartialEq)] | |
1033 | #[allow(dead_code)] | |
1034 | pub enum StreamType { | |
1035 | /// Video stream. | |
1036 | Video, | |
1037 | /// Audio stream. | |
1038 | Audio, | |
1039 | /// Subtitles. | |
1040 | Subtitles, | |
1041 | /// Any data stream (or might be an unrecognized audio/video stream). | |
1042 | Data, | |
1043 | /// Nonexistent stream. | |
1044 | None, | |
1045 | } | |
1046 | ||
1047 | impl fmt::Display for StreamType { | |
1048 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
1049 | match *self { | |
1050 | StreamType::Video => write!(f, "Video"), | |
1051 | StreamType::Audio => write!(f, "Audio"), | |
1052 | StreamType::Subtitles => write!(f, "Subtitles"), | |
1053 | StreamType::Data => write!(f, "Data"), | |
1054 | StreamType::None => write!(f, "-"), | |
1055 | } | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | /// Stream data. | |
1060 | #[allow(dead_code)] | |
1061 | #[derive(Clone)] | |
1062 | pub struct NAStream { | |
1063 | media_type: StreamType, | |
1064 | /// Stream ID. | |
1065 | pub id: u32, | |
1066 | num: usize, | |
1067 | info: NACodecInfoRef, | |
1068 | /// Timebase numerator. | |
1069 | pub tb_num: u32, | |
1070 | /// Timebase denominator. | |
1071 | pub tb_den: u32, | |
1072 | } | |
1073 | ||
1074 | /// A specialised reference-counted `NAStream` type. | |
1075 | pub type NAStreamRef = Arc<NAStream>; | |
1076 | ||
1077 | /// Downscales the timebase by its greatest common denominator. | |
1078 | pub fn reduce_timebase(tb_num: u32, tb_den: u32) -> (u32, u32) { | |
1079 | if tb_num == 0 { return (tb_num, tb_den); } | |
1080 | if (tb_den % tb_num) == 0 { return (1, tb_den / tb_num); } | |
1081 | ||
1082 | let mut a = tb_num; | |
1083 | let mut b = tb_den; | |
1084 | ||
1085 | while a != b { | |
1086 | if a > b { a -= b; } | |
1087 | else if b > a { b -= a; } | |
1088 | } | |
1089 | ||
1090 | (tb_num / a, tb_den / a) | |
1091 | } | |
1092 | ||
1093 | impl NAStream { | |
1094 | /// Constructs a new `NAStream` instance. | |
1095 | pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32) -> Self { | |
1096 | let (n, d) = reduce_timebase(tb_num, tb_den); | |
1097 | NAStream { media_type: mt, id, num: 0, info: info.into_ref(), tb_num: n, tb_den: d } | |
1098 | } | |
1099 | /// Returns stream id. | |
1100 | pub fn get_id(&self) -> u32 { self.id } | |
1101 | /// Returns stream type. | |
1102 | pub fn get_media_type(&self) -> StreamType { self.media_type } | |
1103 | /// Returns stream number assigned by demuxer. | |
1104 | pub fn get_num(&self) -> usize { self.num } | |
1105 | /// Sets stream number. | |
1106 | pub fn set_num(&mut self, num: usize) { self.num = num; } | |
1107 | /// Returns codec information. | |
1108 | pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() } | |
1109 | /// Returns stream timebase. | |
1110 | pub fn get_timebase(&self) -> (u32, u32) { (self.tb_num, self.tb_den) } | |
1111 | /// Sets new stream timebase. | |
1112 | pub fn set_timebase(&mut self, tb_num: u32, tb_den: u32) { | |
1113 | let (n, d) = reduce_timebase(tb_num, tb_den); | |
1114 | self.tb_num = n; | |
1115 | self.tb_den = d; | |
1116 | } | |
1117 | /// Converts current instance into a reference-counted one. | |
1118 | pub fn into_ref(self) -> NAStreamRef { Arc::new(self) } | |
1119 | } | |
1120 | ||
1121 | impl fmt::Display for NAStream { | |
1122 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
1123 | write!(f, "({}#{} @ {}/{} - {})", self.media_type, self.id, self.tb_num, self.tb_den, self.info.get_properties()) | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | /// Packet with compressed data. | |
1128 | #[allow(dead_code)] | |
1129 | pub struct NAPacket { | |
1130 | stream: NAStreamRef, | |
1131 | /// Packet timestamp. | |
1132 | pub ts: NATimeInfo, | |
1133 | buffer: NABufferRef<Vec<u8>>, | |
1134 | /// Keyframe flag. | |
1135 | pub keyframe: bool, | |
1136 | // options: HashMap<String, NAValue<'a>>, | |
1137 | } | |
1138 | ||
1139 | impl NAPacket { | |
1140 | /// Constructs a new `NAPacket` instance. | |
1141 | pub fn new(str: NAStreamRef, ts: NATimeInfo, kf: bool, vec: Vec<u8>) -> Self { | |
1142 | // let mut vec: Vec<u8> = Vec::new(); | |
1143 | // vec.resize(size, 0); | |
1144 | NAPacket { stream: str, ts, keyframe: kf, buffer: NABufferRef::new(vec) } | |
1145 | } | |
1146 | /// Returns information about the stream packet belongs to. | |
1147 | pub fn get_stream(&self) -> NAStreamRef { self.stream.clone() } | |
1148 | /// Returns packet timestamp. | |
1149 | pub fn get_time_information(&self) -> NATimeInfo { self.ts } | |
1150 | /// Returns packet presentation timestamp. | |
1151 | pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() } | |
1152 | /// Returns packet decoding timestamp. | |
1153 | pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() } | |
1154 | /// Returns packet duration. | |
1155 | pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() } | |
1156 | /// Reports whether this is a keyframe packet. | |
1157 | pub fn is_keyframe(&self) -> bool { self.keyframe } | |
1158 | /// Returns a reference to packet data. | |
1159 | pub fn get_buffer(&self) -> NABufferRef<Vec<u8>> { self.buffer.clone() } | |
1160 | } | |
1161 | ||
1162 | impl Drop for NAPacket { | |
1163 | fn drop(&mut self) {} | |
1164 | } | |
1165 | ||
1166 | impl fmt::Display for NAPacket { | |
1167 | fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | |
1168 | let mut ostr = format!("[pkt for {} size {}", self.stream, self.buffer.len()); | |
1169 | if let Some(pts) = self.ts.pts { ostr = format!("{} pts {}", ostr, pts); } | |
1170 | if let Some(dts) = self.ts.dts { ostr = format!("{} dts {}", ostr, dts); } | |
1171 | if let Some(dur) = self.ts.duration { ostr = format!("{} duration {}", ostr, dur); } | |
1172 | if self.keyframe { ostr = format!("{} kf", ostr); } | |
1173 | ostr += "]"; | |
1174 | write!(f, "{}", ostr) | |
1175 | } | |
1176 | } |