nihav-core/src/frame.rs

   1 use std::cmp::max;
   2 use std::collections::HashMap;
   3 use std::fmt;
   4 pub use std::rc::Rc;
   5 pub use std::cell::*;
   6 pub use crate::formats::*;
   7
   8 #[allow(dead_code)]
   9 #[derive(Clone,Copy,PartialEq)]
  10 pub struct NAAudioInfo {
  11     sample_rate: u32,
  12     channels:    u8,
  13     format:      NASoniton,
  14     block_len:   usize,
  15 }
  16
  17 impl NAAudioInfo {
  18     pub fn new(sr: u32, ch: u8, fmt: NASoniton, bl: usize) -> Self {
  19         NAAudioInfo { sample_rate: sr, channels: ch, format: fmt, block_len: bl }
  20     }
  21     pub fn get_sample_rate(&self) -> u32 { self.sample_rate }
  22     pub fn get_channels(&self) -> u8 { self.channels }
  23     pub fn get_format(&self) -> NASoniton { self.format }
  24     pub fn get_block_len(&self) -> usize { self.block_len }
  25 }
  26
  27 impl fmt::Display for NAAudioInfo {
  28     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  29         write!(f, "{} Hz, {} ch", self.sample_rate, self.channels)
  30     }
  31 }
  32
  33 #[allow(dead_code)]
  34 #[derive(Clone,Copy,PartialEq)]
  35 pub struct NAVideoInfo {
  36     width:      usize,
  37     height:     usize,
  38     flipped:    bool,
  39     format:     NAPixelFormaton,
  40 }
  41
  42 impl NAVideoInfo {
  43     pub fn new(w: usize, h: usize, flip: bool, fmt: NAPixelFormaton) -> Self {
  44         NAVideoInfo { width: w, height: h, flipped: flip, format: fmt }
  45     }
  46     pub fn get_width(&self)  -> usize { self.width as usize }
  47     pub fn get_height(&self) -> usize { self.height as usize }
  48     pub fn is_flipped(&self) -> bool { self.flipped }
  49     pub fn get_format(&self) -> NAPixelFormaton { self.format }
  50     pub fn set_width(&mut self, w: usize)  { self.width  = w; }
  51     pub fn set_height(&mut self, h: usize) { self.height = h; }
  52 }
  53
  54 impl fmt::Display for NAVideoInfo {
  55     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  56         write!(f, "{}x{}", self.width, self.height)
  57     }
  58 }
  59
  60 #[derive(Clone,Copy,PartialEq)]
  61 pub enum NACodecTypeInfo {
  62     None,
  63     Audio(NAAudioInfo),
  64     Video(NAVideoInfo),
  65 }
  66
  67 impl NACodecTypeInfo {
  68     pub fn get_video_info(&self) -> Option<NAVideoInfo> {
  69         match *self {
  70             NACodecTypeInfo::Video(vinfo) => Some(vinfo),
  71             _ => None,
  72         }
  73     }
  74     pub fn get_audio_info(&self) -> Option<NAAudioInfo> {
  75         match *self {
  76             NACodecTypeInfo::Audio(ainfo) => Some(ainfo),
  77             _ => None,
  78         }
  79     }
  80     pub fn is_video(&self) -> bool {
  81         match *self {
  82             NACodecTypeInfo::Video(_) => true,
  83             _ => false,
  84         }
  85     }
  86     pub fn is_audio(&self) -> bool {
  87         match *self {
  88             NACodecTypeInfo::Audio(_) => true,
  89             _ => false,
  90         }
  91     }
  92 }
  93
  94 impl fmt::Display for NACodecTypeInfo {
  95     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  96         let ret = match *self {
  97             NACodecTypeInfo::None       => format!(""),
  98             NACodecTypeInfo::Audio(fmt) => format!("{}", fmt),
  99             NACodecTypeInfo::Video(fmt) => format!("{}", fmt),
 100         };
 101         write!(f, "{}", ret)
 102     }
 103 }
 104
 105 pub type NABufferRefT<T> = Rc<RefCell<Vec<T>>>;
 106
 107 #[derive(Clone)]
 108 pub struct NAVideoBuffer<T> {
 109     info:    NAVideoInfo,
 110     data:    NABufferRefT<T>,
 111     offs:    Vec<usize>,
 112     strides: Vec<usize>,
 113 }
 114
 115 impl<T: Clone> NAVideoBuffer<T> {
 116     pub fn get_offset(&self, idx: usize) -> usize {
 117         if idx >= self.offs.len() { 0 }
 118         else { self.offs[idx] }
 119     }
 120     pub fn get_info(&self) -> NAVideoInfo { self.info }
 121     pub fn get_data(&self) -> Ref<Vec<T>> { self.data.borrow() }
 122     pub fn get_data_mut(&mut self) -> RefMut<Vec<T>> { self.data.borrow_mut() }
 123     pub fn copy_buffer(&mut self) -> Self {
 124         let mut data: Vec<T> = Vec::with_capacity(self.data.borrow().len());
 125         data.clone_from(self.data.borrow().as_ref());
 126         let mut offs: Vec<usize> = Vec::with_capacity(self.offs.len());
 127         offs.clone_from(&self.offs);
 128         let mut strides: Vec<usize> = Vec::with_capacity(self.strides.len());
 129         strides.clone_from(&self.strides);
 130         NAVideoBuffer { info: self.info, data: Rc::new(RefCell::new(data)), offs: offs, strides: strides }
 131     }
 132     pub fn get_stride(&self, idx: usize) -> usize {
 133         if idx >= self.strides.len() { return 0; }
 134         self.strides[idx]
 135     }
 136     pub fn get_dimensions(&self, idx: usize) -> (usize, usize) {
 137         get_plane_size(&self.info, idx)
 138     }
 139 }
 140
 141 #[derive(Clone)]
 142 pub struct NAAudioBuffer<T> {
 143     info:   NAAudioInfo,
 144     data:   NABufferRefT<T>,
 145     offs:   Vec<usize>,
 146     chmap:  NAChannelMap,
 147     len:    usize,
 148 }
 149
 150 impl<T: Clone> NAAudioBuffer<T> {
 151     pub fn get_offset(&self, idx: usize) -> usize {
 152         if idx >= self.offs.len() { 0 }
 153         else { self.offs[idx] }
 154     }
 155     pub fn get_info(&self) -> NAAudioInfo { self.info }
 156     pub fn get_chmap(&self) -> NAChannelMap { self.chmap.clone() }
 157     pub fn get_data(&self) -> Ref<Vec<T>> { self.data.borrow() }
 158     pub fn get_data_mut(&mut self) -> RefMut<Vec<T>> { self.data.borrow_mut() }
 159     pub fn copy_buffer(&mut self) -> Self {
 160         let mut data: Vec<T> = Vec::with_capacity(self.data.borrow().len());
 161         data.clone_from(self.data.borrow().as_ref());
 162         let mut offs: Vec<usize> = Vec::with_capacity(self.offs.len());
 163         offs.clone_from(&self.offs);
 164         NAAudioBuffer { info: self.info, data: Rc::new(RefCell::new(data)), offs: offs, chmap: self.get_chmap(), len: self.len }
 165     }
 166     pub fn get_length(&self) -> usize { self.len }
 167 }
 168
 169 impl NAAudioBuffer<u8> {
 170     pub fn new_from_buf(info: NAAudioInfo, data: NABufferRefT<u8>, chmap: NAChannelMap) -> Self {
 171         let len = data.borrow().len();
 172         NAAudioBuffer { info: info, data: data, chmap: chmap, offs: Vec::new(), len: len }
 173     }
 174 }
 175
 176 #[derive(Clone)]
 177 pub enum NABufferType {
 178     Video      (NAVideoBuffer<u8>),
 179     Video16    (NAVideoBuffer<u16>),
 180     VideoPacked(NAVideoBuffer<u8>),
 181     AudioU8    (NAAudioBuffer<u8>),
 182     AudioI16   (NAAudioBuffer<i16>),
 183     AudioI32   (NAAudioBuffer<i32>),
 184     AudioF32   (NAAudioBuffer<f32>),
 185     AudioPacked(NAAudioBuffer<u8>),
 186     Data       (NABufferRefT<u8>),
 187     None,
 188 }
 189
 190 impl NABufferType {
 191     pub fn get_offset(&self, idx: usize) -> usize {
 192         match *self {
 193             NABufferType::Video(ref vb)       => vb.get_offset(idx),
 194             NABufferType::Video16(ref vb)     => vb.get_offset(idx),
 195             NABufferType::VideoPacked(ref vb) => vb.get_offset(idx),
 196             NABufferType::AudioU8(ref ab)     => ab.get_offset(idx),
 197             NABufferType::AudioI16(ref ab)    => ab.get_offset(idx),
 198             NABufferType::AudioF32(ref ab)    => ab.get_offset(idx),
 199             NABufferType::AudioPacked(ref ab) => ab.get_offset(idx),
 200             _ => 0,
 201         }
 202     }
 203     pub fn get_vbuf(&mut self) -> Option<NAVideoBuffer<u8>> {
 204         match *self {
 205             NABufferType::Video(ref vb)       => Some(vb.clone()),
 206             NABufferType::VideoPacked(ref vb) => Some(vb.clone()),
 207             _ => None,
 208         }
 209     }
 210     pub fn get_vbuf16(&mut self) -> Option<NAVideoBuffer<u16>> {
 211         match *self {
 212             NABufferType::Video16(ref vb)     => Some(vb.clone()),
 213             _ => None,
 214         }
 215     }
 216     pub fn get_abuf_u8(&mut self) -> Option<NAAudioBuffer<u8>> {
 217         match *self {
 218             NABufferType::AudioU8(ref ab) => Some(ab.clone()),
 219             NABufferType::AudioPacked(ref ab) => Some(ab.clone()),
 220             _ => None,
 221         }
 222     }
 223     pub fn get_abuf_i16(&mut self) -> Option<NAAudioBuffer<i16>> {
 224         match *self {
 225             NABufferType::AudioI16(ref ab) => Some(ab.clone()),
 226             _ => None,
 227         }
 228     }
 229     pub fn get_abuf_i32(&mut self) -> Option<NAAudioBuffer<i32>> {
 230         match *self {
 231             NABufferType::AudioI32(ref ab) => Some(ab.clone()),
 232             _ => None,
 233         }
 234     }
 235     pub fn get_abuf_f32(&mut self) -> Option<NAAudioBuffer<f32>> {
 236         match *self {
 237             NABufferType::AudioF32(ref ab) => Some(ab.clone()),
 238             _ => None,
 239         }
 240     }
 241 }
 242
 243 #[derive(Debug,Clone,Copy,PartialEq)]
 244 pub enum AllocatorError {
 245     TooLargeDimensions,
 246     FormatError,
 247 }
 248
 249 pub fn alloc_video_buffer(vinfo: NAVideoInfo, align: u8) -> Result<NABufferType, AllocatorError> {
 250     let fmt = &vinfo.format;
 251     let mut new_size: usize = 0;
 252     let mut offs:    Vec<usize> = Vec::new();
 253     let mut strides: Vec<usize> = Vec::new();
 254
 255     for i in 0..fmt.get_num_comp() {
 256         if fmt.get_chromaton(i) == None { return Err(AllocatorError::FormatError); }
 257     }
 258
 259     let align_mod = ((1 << align) as usize) - 1;
 260     let width  = ((vinfo.width  as usize) + align_mod) & !align_mod;
 261     let height = ((vinfo.height as usize) + align_mod) & !align_mod;
 262     let mut max_depth = 0;
 263     let mut all_packed = true;
 264     for i in 0..fmt.get_num_comp() {
 265         let ochr = fmt.get_chromaton(i);
 266         if let None = ochr { continue; }
 267         let chr = ochr.unwrap();
 268         if !chr.is_packed() {
 269             all_packed = false;
 270             break;
 271         }
 272         max_depth = max(max_depth, chr.get_depth());
 273     }
 274
 275 //todo semi-packed like NV12
 276     if fmt.is_paletted() {
 277 //todo various-sized palettes?
 278         let stride = vinfo.get_format().get_chromaton(0).unwrap().get_linesize(width);
 279         let pic_sz = stride.checked_mul(height);
 280         if pic_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 281         let pal_size = 256 * (fmt.get_elem_size() as usize);
 282         let new_size = pic_sz.unwrap().checked_add(pal_size);
 283         if new_size == None { return Err(AllocatorError::TooLargeDimensions); }
 284         offs.push(0);
 285         offs.push(stride * height);
 286         strides.push(stride);
 287         let mut data: Vec<u8> = Vec::with_capacity(new_size.unwrap());
 288         data.resize(new_size.unwrap(), 0);
 289         let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: Rc::new(RefCell::new(data)), info: vinfo, offs: offs, strides: strides };
 290         Ok(NABufferType::Video(buf))
 291     } else if !all_packed {
 292         for i in 0..fmt.get_num_comp() {
 293             let ochr = fmt.get_chromaton(i);
 294             if let None = ochr { continue; }
 295             let chr = ochr.unwrap();
 296             if !vinfo.is_flipped() {
 297                 offs.push(new_size as usize);
 298             }
 299             let stride = chr.get_linesize(width);
 300             let cur_h = chr.get_height(height);
 301             let cur_sz = stride.checked_mul(cur_h);
 302             if cur_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 303             let new_sz = new_size.checked_add(cur_sz.unwrap());
 304             if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 305             new_size = new_sz.unwrap();
 306             if vinfo.is_flipped() {
 307                 offs.push(new_size as usize);
 308             }
 309             strides.push(stride);
 310         }
 311         if max_depth <= 8 {
 312             let mut data: Vec<u8> = Vec::with_capacity(new_size);
 313             data.resize(new_size, 0);
 314             let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: Rc::new(RefCell::new(data)), info: vinfo, offs: offs, strides: strides };
 315             Ok(NABufferType::Video(buf))
 316         } else {
 317             let mut data: Vec<u16> = Vec::with_capacity(new_size);
 318             data.resize(new_size, 0);
 319             let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: Rc::new(RefCell::new(data)), info: vinfo, offs: offs, strides: strides };
 320             Ok(NABufferType::Video16(buf))
 321         }
 322     } else {
 323         let elem_sz = fmt.get_elem_size();
 324         let line_sz = width.checked_mul(elem_sz as usize);
 325         if line_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 326         let new_sz = line_sz.unwrap().checked_mul(height);
 327         if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 328         new_size = new_sz.unwrap();
 329         let mut data: Vec<u8> = Vec::with_capacity(new_size);
 330         data.resize(new_size, 0);
 331         strides.push(line_sz.unwrap());
 332         let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: Rc::new(RefCell::new(data)), info: vinfo, offs: offs, strides: strides };
 333         Ok(NABufferType::VideoPacked(buf))
 334     }
 335 }
 336
 337 pub fn alloc_audio_buffer(ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<NABufferType, AllocatorError> {
 338     let mut offs: Vec<usize> = Vec::new();
 339     if ainfo.format.is_planar() || (ainfo.channels == 1 && (ainfo.format.get_bits() % 8) == 0) {
 340         let len = nsamples.checked_mul(ainfo.channels as usize);
 341         if len == None { return Err(AllocatorError::TooLargeDimensions); }
 342         let length = len.unwrap();
 343         for i in 0..ainfo.channels {
 344             offs.push((i as usize) * nsamples);
 345         }
 346         if ainfo.format.is_float() {
 347             if ainfo.format.get_bits() == 32 {
 348                 let mut data: Vec<f32> = Vec::with_capacity(length);
 349                 data.resize(length, 0.0);
 350                 let buf: NAAudioBuffer<f32> = NAAudioBuffer { data: Rc::new(RefCell::new(data)), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 351                 Ok(NABufferType::AudioF32(buf))
 352             } else {
 353                 Err(AllocatorError::TooLargeDimensions)
 354             }
 355         } else {
 356             if ainfo.format.get_bits() == 8 && !ainfo.format.is_signed() {
 357                 let mut data: Vec<u8> = Vec::with_capacity(length);
 358                 data.resize(length, 0);
 359                 let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: Rc::new(RefCell::new(data)), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 360                 Ok(NABufferType::AudioU8(buf))
 361             } else if ainfo.format.get_bits() == 16 && ainfo.format.is_signed() {
 362                 let mut data: Vec<i16> = Vec::with_capacity(length);
 363                 data.resize(length, 0);
 364                 let buf: NAAudioBuffer<i16> = NAAudioBuffer { data: Rc::new(RefCell::new(data)), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 365                 Ok(NABufferType::AudioI16(buf))
 366             } else {
 367                 Err(AllocatorError::TooLargeDimensions)
 368             }
 369         }
 370     } else {
 371         let len = nsamples.checked_mul(ainfo.channels as usize);
 372         if len == None { return Err(AllocatorError::TooLargeDimensions); }
 373         let length = ainfo.format.get_audio_size(len.unwrap() as u64);
 374         let mut data: Vec<u8> = Vec::with_capacity(length);
 375         data.resize(length, 0);
 376         let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: Rc::new(RefCell::new(data)), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 377         Ok(NABufferType::AudioPacked(buf))
 378     }
 379 }
 380
 381 pub fn alloc_data_buffer(size: usize) -> Result<NABufferType, AllocatorError> {
 382     let mut data: Vec<u8> = Vec::with_capacity(size);
 383     data.resize(size, 0);
 384     let buf: NABufferRefT<u8> = Rc::new(RefCell::new(data));
 385     Ok(NABufferType::Data(buf))
 386 }
 387
 388 pub fn copy_buffer(buf: NABufferType) -> NABufferType {
 389     buf.clone()
 390 }
 391
 392 #[allow(dead_code)]
 393 #[derive(Clone)]
 394 pub struct NACodecInfo {
 395     name:       &'static str,
 396     properties: NACodecTypeInfo,
 397     extradata:  Option<Rc<Vec<u8>>>,
 398 }
 399
 400 impl NACodecInfo {
 401     pub fn new(name: &'static str, p: NACodecTypeInfo, edata: Option<Vec<u8>>) -> Self {
 402         let extradata = match edata {
 403             None => None,
 404             Some(vec) => Some(Rc::new(vec)),
 405         };
 406         NACodecInfo { name: name, properties: p, extradata: extradata }
 407     }
 408     pub fn new_ref(name: &'static str, p: NACodecTypeInfo, edata: Option<Rc<Vec<u8>>>) -> Self {
 409         NACodecInfo { name: name, properties: p, extradata: edata }
 410     }
 411     pub fn get_properties(&self) -> NACodecTypeInfo { self.properties }
 412     pub fn get_extradata(&self) -> Option<Rc<Vec<u8>>> {
 413         if let Some(ref vec) = self.extradata { return Some(vec.clone()); }
 414         None
 415     }
 416     pub fn get_name(&self) -> &'static str { self.name }
 417     pub fn is_video(&self) -> bool {
 418         if let NACodecTypeInfo::Video(_) = self.properties { return true; }
 419         false
 420     }
 421     pub fn is_audio(&self) -> bool {
 422         if let NACodecTypeInfo::Audio(_) = self.properties { return true; }
 423         false
 424     }
 425     pub fn new_dummy() -> Rc<Self> {
 426         Rc::new(DUMMY_CODEC_INFO)
 427     }
 428     pub fn replace_info(&self, p: NACodecTypeInfo) -> Rc<Self> {
 429         Rc::new(NACodecInfo { name: self.name, properties: p, extradata: self.extradata.clone() })
 430     }
 431 }
 432
 433 impl Default for NACodecInfo {
 434     fn default() -> Self { DUMMY_CODEC_INFO }
 435 }
 436
 437 impl fmt::Display for NACodecInfo {
 438     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 439         let edata = match self.extradata.clone() {
 440             None => format!("no extradata"),
 441             Some(v) => format!("{} byte(s) of extradata", v.len()),
 442         };
 443         write!(f, "{}: {} {}", self.name, self.properties, edata)
 444     }
 445 }
 446
 447 pub const DUMMY_CODEC_INFO: NACodecInfo = NACodecInfo {
 448                                 name: "none",
 449                                 properties: NACodecTypeInfo::None,
 450                                 extradata: None };
 451
 452 #[derive(Debug,Clone)]
 453 pub enum NAValue {
 454     None,
 455     Int(i32),
 456     Long(i64),
 457     String(String),
 458     Data(Rc<Vec<u8>>),
 459 }
 460
 461 #[derive(Debug,Clone,Copy,PartialEq)]
 462 #[allow(dead_code)]
 463 pub enum FrameType {
 464     I,
 465     P,
 466     B,
 467     Skip,
 468     Other,
 469 }
 470
 471 impl fmt::Display for FrameType {
 472     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 473         match *self {
 474             FrameType::I => write!(f, "I"),
 475             FrameType::P => write!(f, "P"),
 476             FrameType::B => write!(f, "B"),
 477             FrameType::Skip => write!(f, "skip"),
 478             FrameType::Other => write!(f, "x"),
 479         }
 480     }
 481 }
 482
 483 #[derive(Debug,Clone,Copy)]
 484 pub struct NATimeInfo {
 485     pts:            Option<u64>,
 486     dts:            Option<u64>,
 487     duration:       Option<u64>,
 488     tb_num:         u32,
 489     tb_den:         u32,
 490 }
 491
 492 impl NATimeInfo {
 493     pub fn new(pts: Option<u64>, dts: Option<u64>, duration: Option<u64>, tb_num: u32, tb_den: u32) -> Self {
 494         NATimeInfo { pts: pts, dts: dts, duration: duration, tb_num: tb_num, tb_den: tb_den }
 495     }
 496     pub fn get_pts(&self) -> Option<u64> { self.pts }
 497     pub fn get_dts(&self) -> Option<u64> { self.dts }
 498     pub fn get_duration(&self) -> Option<u64> { self.duration }
 499     pub fn set_pts(&mut self, pts: Option<u64>) { self.pts = pts; }
 500     pub fn set_dts(&mut self, dts: Option<u64>) { self.dts = dts; }
 501     pub fn set_duration(&mut self, dur: Option<u64>) { self.duration = dur; }
 502 }
 503
 504 #[allow(dead_code)]
 505 #[derive(Clone)]
 506 pub struct NAFrame {
 507     ts:             NATimeInfo,
 508     buffer:         NABufferType,
 509     info:           Rc<NACodecInfo>,
 510     ftype:          FrameType,
 511     key:            bool,
 512     options:        HashMap<String, NAValue>,
 513 }
 514
 515 pub type NAFrameRef = Rc<RefCell<NAFrame>>;
 516
 517 fn get_plane_size(info: &NAVideoInfo, idx: usize) -> (usize, usize) {
 518     let chromaton = info.get_format().get_chromaton(idx);
 519     if let None = chromaton { return (0, 0); }
 520     let (hs, vs) = chromaton.unwrap().get_subsampling();
 521     let w = (info.get_width()  + ((1 << hs) - 1)) >> hs;
 522     let h = (info.get_height() + ((1 << vs) - 1)) >> vs;
 523     (w, h)
 524 }
 525
 526 impl NAFrame {
 527     pub fn new(ts:             NATimeInfo,
 528                ftype:          FrameType,
 529                keyframe:       bool,
 530                info:           Rc<NACodecInfo>,
 531                options:        HashMap<String, NAValue>,
 532                buffer:         NABufferType) -> Self {
 533         NAFrame { ts: ts, buffer: buffer, info: info, ftype: ftype, key: keyframe, options: options }
 534     }
 535     pub fn get_info(&self) -> Rc<NACodecInfo> { self.info.clone() }
 536     pub fn get_frame_type(&self) -> FrameType { self.ftype }
 537     pub fn is_keyframe(&self) -> bool { self.key }
 538     pub fn set_frame_type(&mut self, ftype: FrameType) { self.ftype = ftype; }
 539     pub fn set_keyframe(&mut self, key: bool) { self.key = key; }
 540     pub fn get_time_information(&self) -> NATimeInfo { self.ts }
 541     pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
 542     pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
 543     pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
 544     pub fn set_pts(&mut self, pts: Option<u64>) { self.ts.set_pts(pts); }
 545     pub fn set_dts(&mut self, dts: Option<u64>) { self.ts.set_dts(dts); }
 546     pub fn set_duration(&mut self, dur: Option<u64>) { self.ts.set_duration(dur); }
 547
 548     pub fn get_buffer(&self) -> NABufferType { self.buffer.clone() }
 549 }
 550
 551 impl fmt::Display for NAFrame {
 552     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 553         let mut foo = format!("frame type {}", self.ftype);
 554         if let Some(pts) = self.ts.pts { foo = format!("{} pts {}", foo, pts); }
 555         if let Some(dts) = self.ts.dts { foo = format!("{} dts {}", foo, dts); }
 556         if let Some(dur) = self.ts.duration { foo = format!("{} duration {}", foo, dur); }
 557         if self.key { foo = format!("{} kf", foo); }
 558         write!(f, "[{}]", foo)
 559     }
 560 }
 561
 562 /// Possible stream types.
 563 #[derive(Debug,Clone,Copy)]
 564 #[allow(dead_code)]
 565 pub enum StreamType {
 566     /// video stream
 567     Video,
 568     /// audio stream
 569     Audio,
 570     /// subtitles
 571     Subtitles,
 572     /// any data stream (or might be an unrecognized audio/video stream)
 573     Data,
 574     /// nonexistent stream
 575     None,
 576 }
 577
 578 impl fmt::Display for StreamType {
 579     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 580         match *self {
 581             StreamType::Video => write!(f, "Video"),
 582             StreamType::Audio => write!(f, "Audio"),
 583             StreamType::Subtitles => write!(f, "Subtitles"),
 584             StreamType::Data => write!(f, "Data"),
 585             StreamType::None => write!(f, "-"),
 586         }
 587     }
 588 }
 589
 590 #[allow(dead_code)]
 591 #[derive(Clone)]
 592 pub struct NAStream {
 593     media_type:     StreamType,
 594     id:             u32,
 595     num:            usize,
 596     info:           Rc<NACodecInfo>,
 597     tb_num:         u32,
 598     tb_den:         u32,
 599 }
 600
 601 pub fn reduce_timebase(tb_num: u32, tb_den: u32) -> (u32, u32) {
 602     if tb_num == 0 { return (tb_num, tb_den); }
 603     if (tb_den % tb_num) == 0 { return (1, tb_den / tb_num); }
 604
 605     let mut a = tb_num;
 606     let mut b = tb_den;
 607
 608     while a != b {
 609         if a > b { a -= b; }
 610         else if b > a { b -= a; }
 611     }
 612
 613     (tb_num / a, tb_den / a)
 614 }
 615
 616 impl NAStream {
 617     pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32) -> Self {
 618         let (n, d) = reduce_timebase(tb_num, tb_den);
 619         NAStream { media_type: mt, id: id, num: 0, info: Rc::new(info), tb_num: n, tb_den: d }
 620     }
 621     pub fn get_id(&self) -> u32 { self.id }
 622     pub fn get_num(&self) -> usize { self.num }
 623     pub fn set_num(&mut self, num: usize) { self.num = num; }
 624     pub fn get_info(&self) -> Rc<NACodecInfo> { self.info.clone() }
 625     pub fn get_timebase(&self) -> (u32, u32) { (self.tb_num, self.tb_den) }
 626     pub fn set_timebase(&mut self, tb_num: u32, tb_den: u32) {
 627         let (n, d) = reduce_timebase(tb_num, tb_den);
 628         self.tb_num = n;
 629         self.tb_den = d;
 630     }
 631 }
 632
 633 impl fmt::Display for NAStream {
 634     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 635         write!(f, "({}#{} @ {}/{} - {})", self.media_type, self.id, self.tb_num, self.tb_den, self.info.get_properties())
 636     }
 637 }
 638
 639 #[allow(dead_code)]
 640 pub struct NAPacket {
 641     stream:         Rc<NAStream>,
 642     ts:             NATimeInfo,
 643     buffer:         Rc<Vec<u8>>,
 644     keyframe:       bool,
 645 //    options:        HashMap<String, NAValue<'a>>,
 646 }
 647
 648 impl NAPacket {
 649     pub fn new(str: Rc<NAStream>, ts: NATimeInfo, kf: bool, vec: Vec<u8>) -> Self {
 650 //        let mut vec: Vec<u8> = Vec::new();
 651 //        vec.resize(size, 0);
 652         NAPacket { stream: str, ts: ts, keyframe: kf, buffer: Rc::new(vec) }
 653     }
 654     pub fn get_stream(&self) -> Rc<NAStream> { self.stream.clone() }
 655     pub fn get_time_information(&self) -> NATimeInfo { self.ts }
 656     pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
 657     pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
 658     pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
 659     pub fn is_keyframe(&self) -> bool { self.keyframe }
 660     pub fn get_buffer(&self) -> Rc<Vec<u8>> { self.buffer.clone() }
 661 }
 662
 663 impl Drop for NAPacket {
 664     fn drop(&mut self) {}
 665 }
 666
 667 impl fmt::Display for NAPacket {
 668     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 669         let mut foo = format!("[pkt for {} size {}", self.stream, self.buffer.len());
 670         if let Some(pts) = self.ts.pts { foo = format!("{} pts {}", foo, pts); }
 671         if let Some(dts) = self.ts.dts { foo = format!("{} dts {}", foo, dts); }
 672         if let Some(dur) = self.ts.duration { foo = format!("{} duration {}", foo, dur); }
 673         if self.keyframe { foo = format!("{} kf", foo); }
 674         foo = foo + "]";
 675         write!(f, "{}", foo)
 676     }
 677 }
 678
 679 pub trait FrameFromPacket {
 680     fn new_from_pkt(pkt: &NAPacket, info: Rc<NACodecInfo>, buf: NABufferType) -> NAFrame;
 681     fn fill_timestamps(&mut self, pkt: &NAPacket);
 682 }
 683
 684 impl FrameFromPacket for NAFrame {
 685     fn new_from_pkt(pkt: &NAPacket, info: Rc<NACodecInfo>, buf: NABufferType) -> NAFrame {
 686         NAFrame::new(pkt.ts, FrameType::Other, pkt.keyframe, info, HashMap::new(), buf)
 687     }
 688     fn fill_timestamps(&mut self, pkt: &NAPacket) {
 689         self.ts = pkt.get_time_information();
 690     }
 691 }
 692