nihav-core/src/frame.rs

   1 use std::cmp::max;
   2 use std::collections::HashMap;
   3 use std::fmt;
   4 use std::sync::Arc;
   5 pub use crate::formats::*;
   6 pub use crate::refs::*;
   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 #[derive(Clone)]
 106 pub struct NAVideoBuffer<T> {
 107     info:    NAVideoInfo,
 108     data:    NABufferRef<Vec<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) -> &Vec<T> { self.data.as_ref() }
 120     pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() }
 121     pub fn copy_buffer(&mut self) -> Self {
 122         let mut data: Vec<T> = Vec::with_capacity(self.data.len());
 123         data.clone_from(self.data.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: NABufferRef::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:   NABufferRef<Vec<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) -> &Vec<T> { self.data.as_ref() }
 156     pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() }
 157     pub fn copy_buffer(&mut self) -> Self {
 158         let mut data: Vec<T> = Vec::with_capacity(self.data.len());
 159         data.clone_from(self.data.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: NABufferRef::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: NABufferRef<Vec<u8>>, chmap: NAChannelMap) -> Self {
 169         let len = data.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     Video32    (NAVideoBuffer<u32>),
 179     VideoPacked(NAVideoBuffer<u8>),
 180     AudioU8    (NAAudioBuffer<u8>),
 181     AudioI16   (NAAudioBuffer<i16>),
 182     AudioI32   (NAAudioBuffer<i32>),
 183     AudioF32   (NAAudioBuffer<f32>),
 184     AudioPacked(NAAudioBuffer<u8>),
 185     Data       (NABufferRef<Vec<u8>>),
 186     None,
 187 }
 188
 189 impl NABufferType {
 190     pub fn get_offset(&self, idx: usize) -> usize {
 191         match *self {
 192             NABufferType::Video(ref vb)       => vb.get_offset(idx),
 193             NABufferType::Video16(ref vb)     => vb.get_offset(idx),
 194             NABufferType::Video32(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_video_info(&self) -> Option<NAVideoInfo> {
 204         match *self {
 205             NABufferType::Video(ref vb)       => Some(vb.get_info()),
 206             NABufferType::Video16(ref vb)     => Some(vb.get_info()),
 207             NABufferType::Video32(ref vb)     => Some(vb.get_info()),
 208             NABufferType::VideoPacked(ref vb) => Some(vb.get_info()),
 209             _ => None,
 210         }
 211     }
 212     pub fn get_vbuf(&self) -> Option<NAVideoBuffer<u8>> {
 213         match *self {
 214             NABufferType::Video(ref vb)       => Some(vb.clone()),
 215             NABufferType::VideoPacked(ref vb) => Some(vb.clone()),
 216             _ => None,
 217         }
 218     }
 219     pub fn get_vbuf16(&self) -> Option<NAVideoBuffer<u16>> {
 220         match *self {
 221             NABufferType::Video16(ref vb)     => Some(vb.clone()),
 222             _ => None,
 223         }
 224     }
 225     pub fn get_vbuf32(&self) -> Option<NAVideoBuffer<u32>> {
 226         match *self {
 227             NABufferType::Video32(ref vb)     => Some(vb.clone()),
 228             _ => None,
 229         }
 230     }
 231     pub fn get_abuf_u8(&self) -> Option<NAAudioBuffer<u8>> {
 232         match *self {
 233             NABufferType::AudioU8(ref ab) => Some(ab.clone()),
 234             NABufferType::AudioPacked(ref ab) => Some(ab.clone()),
 235             _ => None,
 236         }
 237     }
 238     pub fn get_abuf_i16(&self) -> Option<NAAudioBuffer<i16>> {
 239         match *self {
 240             NABufferType::AudioI16(ref ab) => Some(ab.clone()),
 241             _ => None,
 242         }
 243     }
 244     pub fn get_abuf_i32(&self) -> Option<NAAudioBuffer<i32>> {
 245         match *self {
 246             NABufferType::AudioI32(ref ab) => Some(ab.clone()),
 247             _ => None,
 248         }
 249     }
 250     pub fn get_abuf_f32(&self) -> Option<NAAudioBuffer<f32>> {
 251         match *self {
 252             NABufferType::AudioF32(ref ab) => Some(ab.clone()),
 253             _ => None,
 254         }
 255     }
 256 }
 257
 258 const NA_SIMPLE_VFRAME_COMPONENTS: usize = 4;
 259 pub struct NASimpleVideoFrame<'a, T: Copy> {
 260     pub width:      [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 261     pub height:     [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 262     pub flip:       bool,
 263     pub stride:     [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 264     pub offset:     [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 265     pub components: usize,
 266     pub data:       &'a mut Vec<T>,
 267 }
 268
 269 impl<'a, T:Copy> NASimpleVideoFrame<'a, T> {
 270     pub fn from_video_buf(vbuf: &'a mut NAVideoBuffer<T>) -> Option<Self> {
 271         let vinfo = vbuf.get_info();
 272         let components = vinfo.format.components as usize;
 273         if components > NA_SIMPLE_VFRAME_COMPONENTS {
 274             return None;
 275         }
 276         let mut w: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 277         let mut h: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 278         let mut s: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 279         let mut o: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 280         for comp in 0..components {
 281             let (width, height) = vbuf.get_dimensions(comp);
 282             w[comp] = width;
 283             h[comp] = height;
 284             s[comp] = vbuf.get_stride(comp);
 285             o[comp] = vbuf.get_offset(comp);
 286         }
 287         let flip = vinfo.flipped;
 288         Some(NASimpleVideoFrame {
 289             width:  w,
 290             height: h,
 291             flip,
 292             stride: s,
 293             offset: o,
 294             components,
 295             data: vbuf.data.as_mut().unwrap(),
 296             })
 297     }
 298 }
 299
 300 #[derive(Debug,Clone,Copy,PartialEq)]
 301 pub enum AllocatorError {
 302     TooLargeDimensions,
 303     FormatError,
 304 }
 305
 306 pub fn alloc_video_buffer(vinfo: NAVideoInfo, align: u8) -> Result<NABufferType, AllocatorError> {
 307     let fmt = &vinfo.format;
 308     let mut new_size: usize = 0;
 309     let mut offs:    Vec<usize> = Vec::new();
 310     let mut strides: Vec<usize> = Vec::new();
 311
 312     for i in 0..fmt.get_num_comp() {
 313         if fmt.get_chromaton(i) == None { return Err(AllocatorError::FormatError); }
 314     }
 315
 316     let align_mod = ((1 << align) as usize) - 1;
 317     let width  = ((vinfo.width  as usize) + align_mod) & !align_mod;
 318     let height = ((vinfo.height as usize) + align_mod) & !align_mod;
 319     let mut max_depth = 0;
 320     let mut all_packed = true;
 321     let mut all_bytealigned = true;
 322     for i in 0..fmt.get_num_comp() {
 323         let ochr = fmt.get_chromaton(i);
 324         if let None = ochr { continue; }
 325         let chr = ochr.unwrap();
 326         if !chr.is_packed() {
 327             all_packed = false;
 328         } else if ((chr.get_shift() + chr.get_depth()) & 7) != 0 {
 329             all_bytealigned = false;
 330         }
 331         max_depth = max(max_depth, chr.get_depth());
 332     }
 333     let unfit_elem_size = match fmt.get_elem_size() {
 334             2 | 4 => false,
 335             _ => true,
 336         };
 337
 338 //todo semi-packed like NV12
 339     if fmt.is_paletted() {
 340 //todo various-sized palettes?
 341         let stride = vinfo.get_format().get_chromaton(0).unwrap().get_linesize(width);
 342         let pic_sz = stride.checked_mul(height);
 343         if pic_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 344         let pal_size = 256 * (fmt.get_elem_size() as usize);
 345         let new_size = pic_sz.unwrap().checked_add(pal_size);
 346         if new_size == None { return Err(AllocatorError::TooLargeDimensions); }
 347         offs.push(0);
 348         offs.push(stride * height);
 349         strides.push(stride);
 350         let mut data: Vec<u8> = Vec::with_capacity(new_size.unwrap());
 351         data.resize(new_size.unwrap(), 0);
 352         let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 353         Ok(NABufferType::Video(buf))
 354     } else if !all_packed {
 355         for i in 0..fmt.get_num_comp() {
 356             let ochr = fmt.get_chromaton(i);
 357             if let None = ochr { continue; }
 358             let chr = ochr.unwrap();
 359             if !vinfo.is_flipped() {
 360                 offs.push(new_size as usize);
 361             }
 362             let stride = chr.get_linesize(width);
 363             let cur_h = chr.get_height(height);
 364             let cur_sz = stride.checked_mul(cur_h);
 365             if cur_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 366             let new_sz = new_size.checked_add(cur_sz.unwrap());
 367             if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 368             new_size = new_sz.unwrap();
 369             if vinfo.is_flipped() {
 370                 offs.push(new_size as usize);
 371             }
 372             strides.push(stride);
 373         }
 374         if max_depth <= 8 {
 375             let mut data: Vec<u8> = Vec::with_capacity(new_size);
 376             data.resize(new_size, 0);
 377             let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 378             Ok(NABufferType::Video(buf))
 379         } else if max_depth <= 16 {
 380             let mut data: Vec<u16> = Vec::with_capacity(new_size);
 381             data.resize(new_size, 0);
 382             let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 383             Ok(NABufferType::Video16(buf))
 384         } else {
 385             let mut data: Vec<u32> = Vec::with_capacity(new_size);
 386             data.resize(new_size, 0);
 387             let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 388             Ok(NABufferType::Video32(buf))
 389         }
 390     } else if all_bytealigned || unfit_elem_size {
 391         let elem_sz = fmt.get_elem_size();
 392         let line_sz = width.checked_mul(elem_sz as usize);
 393         if line_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 394         let new_sz = line_sz.unwrap().checked_mul(height);
 395         if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 396         new_size = new_sz.unwrap();
 397         let mut data: Vec<u8> = Vec::with_capacity(new_size);
 398         data.resize(new_size, 0);
 399         strides.push(line_sz.unwrap());
 400         let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 401         Ok(NABufferType::VideoPacked(buf))
 402     } else {
 403         let elem_sz = fmt.get_elem_size();
 404         let new_sz = width.checked_mul(height);
 405         if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 406         new_size = new_sz.unwrap();
 407         match elem_sz {
 408             2 => {
 409                     let mut data: Vec<u16> = Vec::with_capacity(new_size);
 410                     data.resize(new_size, 0);
 411                     strides.push(width);
 412                     let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 413                     Ok(NABufferType::Video16(buf))
 414                 },
 415             4 => {
 416                     let mut data: Vec<u32> = Vec::with_capacity(new_size);
 417                     data.resize(new_size, 0);
 418                     strides.push(width);
 419                     let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 420                     Ok(NABufferType::Video32(buf))
 421                 },
 422             _ => unreachable!(),
 423         }
 424     }
 425 }
 426
 427 pub fn alloc_audio_buffer(ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<NABufferType, AllocatorError> {
 428     let mut offs: Vec<usize> = Vec::new();
 429     if ainfo.format.is_planar() || (ainfo.channels == 1 && (ainfo.format.get_bits() % 8) == 0) {
 430         let len = nsamples.checked_mul(ainfo.channels as usize);
 431         if len == None { return Err(AllocatorError::TooLargeDimensions); }
 432         let length = len.unwrap();
 433         for i in 0..ainfo.channels {
 434             offs.push((i as usize) * nsamples);
 435         }
 436         if ainfo.format.is_float() {
 437             if ainfo.format.get_bits() == 32 {
 438                 let mut data: Vec<f32> = Vec::with_capacity(length);
 439                 data.resize(length, 0.0);
 440                 let buf: NAAudioBuffer<f32> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 441                 Ok(NABufferType::AudioF32(buf))
 442             } else {
 443                 Err(AllocatorError::TooLargeDimensions)
 444             }
 445         } else {
 446             if ainfo.format.get_bits() == 8 && !ainfo.format.is_signed() {
 447                 let mut data: Vec<u8> = Vec::with_capacity(length);
 448                 data.resize(length, 0);
 449                 let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 450                 Ok(NABufferType::AudioU8(buf))
 451             } else if ainfo.format.get_bits() == 16 && ainfo.format.is_signed() {
 452                 let mut data: Vec<i16> = Vec::with_capacity(length);
 453                 data.resize(length, 0);
 454                 let buf: NAAudioBuffer<i16> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 455                 Ok(NABufferType::AudioI16(buf))
 456             } else {
 457                 Err(AllocatorError::TooLargeDimensions)
 458             }
 459         }
 460     } else {
 461         let len = nsamples.checked_mul(ainfo.channels as usize);
 462         if len == None { return Err(AllocatorError::TooLargeDimensions); }
 463         let length = ainfo.format.get_audio_size(len.unwrap() as u64);
 464         let mut data: Vec<u8> = Vec::with_capacity(length);
 465         data.resize(length, 0);
 466         let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 467         Ok(NABufferType::AudioPacked(buf))
 468     }
 469 }
 470
 471 pub fn alloc_data_buffer(size: usize) -> Result<NABufferType, AllocatorError> {
 472     let mut data: Vec<u8> = Vec::with_capacity(size);
 473     data.resize(size, 0);
 474     let buf: NABufferRef<Vec<u8>> = NABufferRef::new(data);
 475     Ok(NABufferType::Data(buf))
 476 }
 477
 478 pub fn copy_buffer(buf: NABufferType) -> NABufferType {
 479     buf.clone()
 480 }
 481
 482 pub struct NABufferPool {
 483     pool:       Vec<NABufferRef<NABufferType>>,
 484     max_len:    usize,
 485 }
 486
 487 impl NABufferPool {
 488     pub fn new(max_len: usize) -> Self {
 489         Self {
 490             pool:       Vec::with_capacity(max_len),
 491             max_len,
 492         }
 493     }
 494     pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> {
 495         let nbufs = self.max_len - self.pool.len();
 496         for _ in 0..nbufs {
 497             let buf = alloc_video_buffer(vinfo.clone(), align)?;
 498             self.pool.push(NABufferRef::new(buf));
 499         }
 500         Ok(())
 501     }
 502     pub fn prealloc_audio(&mut self, ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<(), AllocatorError> {
 503         let nbufs = self.max_len - self.pool.len();
 504         for _ in 0..nbufs {
 505             let buf = alloc_audio_buffer(ainfo.clone(), nsamples, chmap.clone())?;
 506             self.pool.push(NABufferRef::new(buf));
 507         }
 508         Ok(())
 509     }
 510     pub fn add(&mut self, buf: NABufferType) -> bool {
 511         if self.pool.len() < self.max_len {
 512             self.pool.push(NABufferRef::new(buf));
 513             true
 514         } else {
 515             false
 516         }
 517     }
 518     pub fn get_free(&mut self) -> Option<NABufferRef<NABufferType>> {
 519         for e in self.pool.iter() {
 520             if e.get_num_refs() == 1 {
 521                 return Some(e.clone());
 522             }
 523         }
 524         None
 525     }
 526 }
 527
 528 #[allow(dead_code)]
 529 #[derive(Clone)]
 530 pub struct NACodecInfo {
 531     name:       &'static str,
 532     properties: NACodecTypeInfo,
 533     extradata:  Option<Arc<Vec<u8>>>,
 534 }
 535
 536 pub type NACodecInfoRef = Arc<NACodecInfo>;
 537
 538 impl NACodecInfo {
 539     pub fn new(name: &'static str, p: NACodecTypeInfo, edata: Option<Vec<u8>>) -> Self {
 540         let extradata = match edata {
 541             None => None,
 542             Some(vec) => Some(Arc::new(vec)),
 543         };
 544         NACodecInfo { name: name, properties: p, extradata: extradata }
 545     }
 546     pub fn new_ref(name: &'static str, p: NACodecTypeInfo, edata: Option<Arc<Vec<u8>>>) -> Self {
 547         NACodecInfo { name: name, properties: p, extradata: edata }
 548     }
 549     pub fn into_ref(self) -> NACodecInfoRef { Arc::new(self) }
 550     pub fn get_properties(&self) -> NACodecTypeInfo { self.properties }
 551     pub fn get_extradata(&self) -> Option<Arc<Vec<u8>>> {
 552         if let Some(ref vec) = self.extradata { return Some(vec.clone()); }
 553         None
 554     }
 555     pub fn get_name(&self) -> &'static str { self.name }
 556     pub fn is_video(&self) -> bool {
 557         if let NACodecTypeInfo::Video(_) = self.properties { return true; }
 558         false
 559     }
 560     pub fn is_audio(&self) -> bool {
 561         if let NACodecTypeInfo::Audio(_) = self.properties { return true; }
 562         false
 563     }
 564     pub fn new_dummy() -> Arc<Self> {
 565         Arc::new(DUMMY_CODEC_INFO)
 566     }
 567     pub fn replace_info(&self, p: NACodecTypeInfo) -> Arc<Self> {
 568         Arc::new(NACodecInfo { name: self.name, properties: p, extradata: self.extradata.clone() })
 569     }
 570 }
 571
 572 impl Default for NACodecInfo {
 573     fn default() -> Self { DUMMY_CODEC_INFO }
 574 }
 575
 576 impl fmt::Display for NACodecInfo {
 577     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 578         let edata = match self.extradata.clone() {
 579             None => format!("no extradata"),
 580             Some(v) => format!("{} byte(s) of extradata", v.len()),
 581         };
 582         write!(f, "{}: {} {}", self.name, self.properties, edata)
 583     }
 584 }
 585
 586 pub const DUMMY_CODEC_INFO: NACodecInfo = NACodecInfo {
 587                                 name: "none",
 588                                 properties: NACodecTypeInfo::None,
 589                                 extradata: None };
 590
 591 #[derive(Debug,Clone)]
 592 pub enum NAValue {
 593     None,
 594     Int(i32),
 595     Long(i64),
 596     String(String),
 597     Data(Arc<Vec<u8>>),
 598 }
 599
 600 #[derive(Debug,Clone,Copy,PartialEq)]
 601 #[allow(dead_code)]
 602 pub enum FrameType {
 603     I,
 604     P,
 605     B,
 606     Skip,
 607     Other,
 608 }
 609
 610 impl fmt::Display for FrameType {
 611     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 612         match *self {
 613             FrameType::I => write!(f, "I"),
 614             FrameType::P => write!(f, "P"),
 615             FrameType::B => write!(f, "B"),
 616             FrameType::Skip => write!(f, "skip"),
 617             FrameType::Other => write!(f, "x"),
 618         }
 619     }
 620 }
 621
 622 #[derive(Debug,Clone,Copy)]
 623 pub struct NATimeInfo {
 624     pts:            Option<u64>,
 625     dts:            Option<u64>,
 626     duration:       Option<u64>,
 627     tb_num:         u32,
 628     tb_den:         u32,
 629 }
 630
 631 impl NATimeInfo {
 632     pub fn new(pts: Option<u64>, dts: Option<u64>, duration: Option<u64>, tb_num: u32, tb_den: u32) -> Self {
 633         NATimeInfo { pts: pts, dts: dts, duration: duration, tb_num: tb_num, tb_den: tb_den }
 634     }
 635     pub fn get_pts(&self) -> Option<u64> { self.pts }
 636     pub fn get_dts(&self) -> Option<u64> { self.dts }
 637     pub fn get_duration(&self) -> Option<u64> { self.duration }
 638     pub fn set_pts(&mut self, pts: Option<u64>) { self.pts = pts; }
 639     pub fn set_dts(&mut self, dts: Option<u64>) { self.dts = dts; }
 640     pub fn set_duration(&mut self, dur: Option<u64>) { self.duration = dur; }
 641 }
 642
 643 #[allow(dead_code)]
 644 #[derive(Clone)]
 645 pub struct NAFrame {
 646     ts:             NATimeInfo,
 647     buffer:         NABufferType,
 648     info:           NACodecInfoRef,
 649     ftype:          FrameType,
 650     key:            bool,
 651     options:        HashMap<String, NAValue>,
 652 }
 653
 654 pub type NAFrameRef = Arc<NAFrame>;
 655
 656 fn get_plane_size(info: &NAVideoInfo, idx: usize) -> (usize, usize) {
 657     let chromaton = info.get_format().get_chromaton(idx);
 658     if let None = chromaton { return (0, 0); }
 659     let (hs, vs) = chromaton.unwrap().get_subsampling();
 660     let w = (info.get_width()  + ((1 << hs) - 1)) >> hs;
 661     let h = (info.get_height() + ((1 << vs) - 1)) >> vs;
 662     (w, h)
 663 }
 664
 665 impl NAFrame {
 666     pub fn new(ts:             NATimeInfo,
 667                ftype:          FrameType,
 668                keyframe:       bool,
 669                info:           NACodecInfoRef,
 670                options:        HashMap<String, NAValue>,
 671                buffer:         NABufferType) -> Self {
 672         NAFrame { ts: ts, buffer: buffer, info: info, ftype: ftype, key: keyframe, options: options }
 673     }
 674     pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() }
 675     pub fn get_frame_type(&self) -> FrameType { self.ftype }
 676     pub fn is_keyframe(&self) -> bool { self.key }
 677     pub fn set_frame_type(&mut self, ftype: FrameType) { self.ftype = ftype; }
 678     pub fn set_keyframe(&mut self, key: bool) { self.key = key; }
 679     pub fn get_time_information(&self) -> NATimeInfo { self.ts }
 680     pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
 681     pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
 682     pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
 683     pub fn set_pts(&mut self, pts: Option<u64>) { self.ts.set_pts(pts); }
 684     pub fn set_dts(&mut self, dts: Option<u64>) { self.ts.set_dts(dts); }
 685     pub fn set_duration(&mut self, dur: Option<u64>) { self.ts.set_duration(dur); }
 686
 687     pub fn get_buffer(&self) -> NABufferType { self.buffer.clone() }
 688
 689     pub fn into_ref(self) -> NAFrameRef { Arc::new(self) }
 690 }
 691
 692 impl fmt::Display for NAFrame {
 693     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 694         let mut foo = format!("frame type {}", self.ftype);
 695         if let Some(pts) = self.ts.pts { foo = format!("{} pts {}", foo, pts); }
 696         if let Some(dts) = self.ts.dts { foo = format!("{} dts {}", foo, dts); }
 697         if let Some(dur) = self.ts.duration { foo = format!("{} duration {}", foo, dur); }
 698         if self.key { foo = format!("{} kf", foo); }
 699         write!(f, "[{}]", foo)
 700     }
 701 }
 702
 703 /// Possible stream types.
 704 #[derive(Debug,Clone,Copy)]
 705 #[allow(dead_code)]
 706 pub enum StreamType {
 707     /// video stream
 708     Video,
 709     /// audio stream
 710     Audio,
 711     /// subtitles
 712     Subtitles,
 713     /// any data stream (or might be an unrecognized audio/video stream)
 714     Data,
 715     /// nonexistent stream
 716     None,
 717 }
 718
 719 impl fmt::Display for StreamType {
 720     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 721         match *self {
 722             StreamType::Video => write!(f, "Video"),
 723             StreamType::Audio => write!(f, "Audio"),
 724             StreamType::Subtitles => write!(f, "Subtitles"),
 725             StreamType::Data => write!(f, "Data"),
 726             StreamType::None => write!(f, "-"),
 727         }
 728     }
 729 }
 730
 731 #[allow(dead_code)]
 732 #[derive(Clone)]
 733 pub struct NAStream {
 734     media_type:     StreamType,
 735     id:             u32,
 736     num:            usize,
 737     info:           NACodecInfoRef,
 738     tb_num:         u32,
 739     tb_den:         u32,
 740 }
 741
 742 pub type NAStreamRef = Arc<NAStream>;
 743
 744 pub fn reduce_timebase(tb_num: u32, tb_den: u32) -> (u32, u32) {
 745     if tb_num == 0 { return (tb_num, tb_den); }
 746     if (tb_den % tb_num) == 0 { return (1, tb_den / tb_num); }
 747
 748     let mut a = tb_num;
 749     let mut b = tb_den;
 750
 751     while a != b {
 752         if a > b { a -= b; }
 753         else if b > a { b -= a; }
 754     }
 755
 756     (tb_num / a, tb_den / a)
 757 }
 758
 759 impl NAStream {
 760     pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32) -> Self {
 761         let (n, d) = reduce_timebase(tb_num, tb_den);
 762         NAStream { media_type: mt, id: id, num: 0, info: info.into_ref(), tb_num: n, tb_den: d }
 763     }
 764     pub fn get_id(&self) -> u32 { self.id }
 765     pub fn get_num(&self) -> usize { self.num }
 766     pub fn set_num(&mut self, num: usize) { self.num = num; }
 767     pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() }
 768     pub fn get_timebase(&self) -> (u32, u32) { (self.tb_num, self.tb_den) }
 769     pub fn set_timebase(&mut self, tb_num: u32, tb_den: u32) {
 770         let (n, d) = reduce_timebase(tb_num, tb_den);
 771         self.tb_num = n;
 772         self.tb_den = d;
 773     }
 774     pub fn into_ref(self) -> NAStreamRef { Arc::new(self) }
 775 }
 776
 777 impl fmt::Display for NAStream {
 778     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 779         write!(f, "({}#{} @ {}/{} - {})", self.media_type, self.id, self.tb_num, self.tb_den, self.info.get_properties())
 780     }
 781 }
 782
 783 #[allow(dead_code)]
 784 pub struct NAPacket {
 785     stream:         NAStreamRef,
 786     ts:             NATimeInfo,
 787     buffer:         NABufferRef<Vec<u8>>,
 788     keyframe:       bool,
 789 //    options:        HashMap<String, NAValue<'a>>,
 790 }
 791
 792 impl NAPacket {
 793     pub fn new(str: NAStreamRef, ts: NATimeInfo, kf: bool, vec: Vec<u8>) -> Self {
 794 //        let mut vec: Vec<u8> = Vec::new();
 795 //        vec.resize(size, 0);
 796         NAPacket { stream: str, ts: ts, keyframe: kf, buffer: NABufferRef::new(vec) }
 797     }
 798     pub fn get_stream(&self) -> NAStreamRef { self.stream.clone() }
 799     pub fn get_time_information(&self) -> NATimeInfo { self.ts }
 800     pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
 801     pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
 802     pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
 803     pub fn is_keyframe(&self) -> bool { self.keyframe }
 804     pub fn get_buffer(&self) -> NABufferRef<Vec<u8>> { self.buffer.clone() }
 805 }
 806
 807 impl Drop for NAPacket {
 808     fn drop(&mut self) {}
 809 }
 810
 811 impl fmt::Display for NAPacket {
 812     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 813         let mut foo = format!("[pkt for {} size {}", self.stream, self.buffer.len());
 814         if let Some(pts) = self.ts.pts { foo = format!("{} pts {}", foo, pts); }
 815         if let Some(dts) = self.ts.dts { foo = format!("{} dts {}", foo, dts); }
 816         if let Some(dur) = self.ts.duration { foo = format!("{} duration {}", foo, dur); }
 817         if self.keyframe { foo = format!("{} kf", foo); }
 818         foo = foo + "]";
 819         write!(f, "{}", foo)
 820     }
 821 }
 822
 823 pub trait FrameFromPacket {
 824     fn new_from_pkt(pkt: &NAPacket, info: NACodecInfoRef, buf: NABufferType) -> NAFrame;
 825     fn fill_timestamps(&mut self, pkt: &NAPacket);
 826 }
 827
 828 impl FrameFromPacket for NAFrame {
 829     fn new_from_pkt(pkt: &NAPacket, info: NACodecInfoRef, buf: NABufferType) -> NAFrame {
 830         NAFrame::new(pkt.ts, FrameType::Other, pkt.keyframe, info, HashMap::new(), buf)
 831     }
 832     fn fill_timestamps(&mut self, pkt: &NAPacket) {
 833         self.ts = pkt.get_time_information();
 834     }
 835 }
 836