src/frame.rs

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