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 use std::sync::Arc;
   7 pub use crate::formats::*;
   8 pub use crate::refs::*;
   9
  10 #[allow(dead_code)]
  11 #[derive(Clone,Copy,PartialEq)]
  12 pub struct NAAudioInfo {
  13     sample_rate: u32,
  14     channels:    u8,
  15     format:      NASoniton,
  16     block_len:   usize,
  17 }
  18
  19 impl NAAudioInfo {
  20     pub fn new(sr: u32, ch: u8, fmt: NASoniton, bl: usize) -> Self {
  21         NAAudioInfo { sample_rate: sr, channels: ch, format: fmt, block_len: bl }
  22     }
  23     pub fn get_sample_rate(&self) -> u32 { self.sample_rate }
  24     pub fn get_channels(&self) -> u8 { self.channels }
  25     pub fn get_format(&self) -> NASoniton { self.format }
  26     pub fn get_block_len(&self) -> usize { self.block_len }
  27 }
  28
  29 impl fmt::Display for NAAudioInfo {
  30     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  31         write!(f, "{} Hz, {} ch", self.sample_rate, self.channels)
  32     }
  33 }
  34
  35 #[allow(dead_code)]
  36 #[derive(Clone,Copy,PartialEq)]
  37 pub struct NAVideoInfo {
  38     width:      usize,
  39     height:     usize,
  40     flipped:    bool,
  41     format:     NAPixelFormaton,
  42 }
  43
  44 impl NAVideoInfo {
  45     pub fn new(w: usize, h: usize, flip: bool, fmt: NAPixelFormaton) -> Self {
  46         NAVideoInfo { width: w, height: h, flipped: flip, format: fmt }
  47     }
  48     pub fn get_width(&self)  -> usize { self.width as usize }
  49     pub fn get_height(&self) -> usize { self.height as usize }
  50     pub fn is_flipped(&self) -> bool { self.flipped }
  51     pub fn get_format(&self) -> NAPixelFormaton { self.format }
  52     pub fn set_width(&mut self, w: usize)  { self.width  = w; }
  53     pub fn set_height(&mut self, h: usize) { self.height = h; }
  54 }
  55
  56 impl fmt::Display for NAVideoInfo {
  57     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  58         write!(f, "{}x{}", self.width, self.height)
  59     }
  60 }
  61
  62 #[derive(Clone,Copy,PartialEq)]
  63 pub enum NACodecTypeInfo {
  64     None,
  65     Audio(NAAudioInfo),
  66     Video(NAVideoInfo),
  67 }
  68
  69 impl NACodecTypeInfo {
  70     pub fn get_video_info(&self) -> Option<NAVideoInfo> {
  71         match *self {
  72             NACodecTypeInfo::Video(vinfo) => Some(vinfo),
  73             _ => None,
  74         }
  75     }
  76     pub fn get_audio_info(&self) -> Option<NAAudioInfo> {
  77         match *self {
  78             NACodecTypeInfo::Audio(ainfo) => Some(ainfo),
  79             _ => None,
  80         }
  81     }
  82     pub fn is_video(&self) -> bool {
  83         match *self {
  84             NACodecTypeInfo::Video(_) => true,
  85             _ => false,
  86         }
  87     }
  88     pub fn is_audio(&self) -> bool {
  89         match *self {
  90             NACodecTypeInfo::Audio(_) => true,
  91             _ => false,
  92         }
  93     }
  94 }
  95
  96 impl fmt::Display for NACodecTypeInfo {
  97     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  98         let ret = match *self {
  99             NACodecTypeInfo::None       => format!(""),
 100             NACodecTypeInfo::Audio(fmt) => format!("{}", fmt),
 101             NACodecTypeInfo::Video(fmt) => format!("{}", fmt),
 102         };
 103         write!(f, "{}", ret)
 104     }
 105 }
 106
 107 #[derive(Clone)]
 108 pub struct NAVideoBuffer<T> {
 109     info:    NAVideoInfo,
 110     data:    NABufferRef<Vec<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) -> &Vec<T> { self.data.as_ref() }
 122     pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() }
 123     pub fn copy_buffer(&mut self) -> Self {
 124         let mut data: Vec<T> = Vec::with_capacity(self.data.len());
 125         data.clone_from(self.data.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: NABufferRef::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:   NABufferRef<Vec<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) -> &Vec<T> { self.data.as_ref() }
 158     pub fn get_data_mut(&mut self) -> Option<&mut Vec<T>> { self.data.as_mut() }
 159     pub fn copy_buffer(&mut self) -> Self {
 160         let mut data: Vec<T> = Vec::with_capacity(self.data.len());
 161         data.clone_from(self.data.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: NABufferRef::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: NABufferRef<Vec<u8>>, chmap: NAChannelMap) -> Self {
 171         let len = data.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     Video32    (NAVideoBuffer<u32>),
 181     VideoPacked(NAVideoBuffer<u8>),
 182     AudioU8    (NAAudioBuffer<u8>),
 183     AudioI16   (NAAudioBuffer<i16>),
 184     AudioI32   (NAAudioBuffer<i32>),
 185     AudioF32   (NAAudioBuffer<f32>),
 186     AudioPacked(NAAudioBuffer<u8>),
 187     Data       (NABufferRef<Vec<u8>>),
 188     None,
 189 }
 190
 191 impl NABufferType {
 192     pub fn get_offset(&self, idx: usize) -> usize {
 193         match *self {
 194             NABufferType::Video(ref vb)       => vb.get_offset(idx),
 195             NABufferType::Video16(ref vb)     => vb.get_offset(idx),
 196             NABufferType::Video32(ref vb)     => vb.get_offset(idx),
 197             NABufferType::VideoPacked(ref vb) => vb.get_offset(idx),
 198             NABufferType::AudioU8(ref ab)     => ab.get_offset(idx),
 199             NABufferType::AudioI16(ref ab)    => ab.get_offset(idx),
 200             NABufferType::AudioF32(ref ab)    => ab.get_offset(idx),
 201             NABufferType::AudioPacked(ref ab) => ab.get_offset(idx),
 202             _ => 0,
 203         }
 204     }
 205     pub fn get_video_info(&self) -> Option<NAVideoInfo> {
 206         match *self {
 207             NABufferType::Video(ref vb)       => Some(vb.get_info()),
 208             NABufferType::Video16(ref vb)     => Some(vb.get_info()),
 209             NABufferType::Video32(ref vb)     => Some(vb.get_info()),
 210             NABufferType::VideoPacked(ref vb) => Some(vb.get_info()),
 211             _ => None,
 212         }
 213     }
 214     pub fn get_vbuf(&self) -> Option<NAVideoBuffer<u8>> {
 215         match *self {
 216             NABufferType::Video(ref vb)       => Some(vb.clone()),
 217             NABufferType::VideoPacked(ref vb) => Some(vb.clone()),
 218             _ => None,
 219         }
 220     }
 221     pub fn get_vbuf16(&self) -> Option<NAVideoBuffer<u16>> {
 222         match *self {
 223             NABufferType::Video16(ref vb)     => Some(vb.clone()),
 224             _ => None,
 225         }
 226     }
 227     pub fn get_vbuf32(&self) -> Option<NAVideoBuffer<u32>> {
 228         match *self {
 229             NABufferType::Video32(ref vb)     => Some(vb.clone()),
 230             _ => None,
 231         }
 232     }
 233     pub fn get_abuf_u8(&self) -> Option<NAAudioBuffer<u8>> {
 234         match *self {
 235             NABufferType::AudioU8(ref ab) => Some(ab.clone()),
 236             NABufferType::AudioPacked(ref ab) => Some(ab.clone()),
 237             _ => None,
 238         }
 239     }
 240     pub fn get_abuf_i16(&self) -> Option<NAAudioBuffer<i16>> {
 241         match *self {
 242             NABufferType::AudioI16(ref ab) => Some(ab.clone()),
 243             _ => None,
 244         }
 245     }
 246     pub fn get_abuf_i32(&self) -> Option<NAAudioBuffer<i32>> {
 247         match *self {
 248             NABufferType::AudioI32(ref ab) => Some(ab.clone()),
 249             _ => None,
 250         }
 251     }
 252     pub fn get_abuf_f32(&self) -> Option<NAAudioBuffer<f32>> {
 253         match *self {
 254             NABufferType::AudioF32(ref ab) => Some(ab.clone()),
 255             _ => None,
 256         }
 257     }
 258 }
 259
 260 const NA_SIMPLE_VFRAME_COMPONENTS: usize = 4;
 261 pub struct NASimpleVideoFrame<'a, T: Copy> {
 262     pub width:      [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 263     pub height:     [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 264     pub flip:       bool,
 265     pub stride:     [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 266     pub offset:     [usize; NA_SIMPLE_VFRAME_COMPONENTS],
 267     pub components: usize,
 268     pub data:       &'a mut Vec<T>,
 269 }
 270
 271 impl<'a, T:Copy> NASimpleVideoFrame<'a, T> {
 272     pub fn from_video_buf(vbuf: &'a mut NAVideoBuffer<T>) -> Option<Self> {
 273         let vinfo = vbuf.get_info();
 274         let components = vinfo.format.components as usize;
 275         if components > NA_SIMPLE_VFRAME_COMPONENTS {
 276             return None;
 277         }
 278         let mut w: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 279         let mut h: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 280         let mut s: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 281         let mut o: [usize; NA_SIMPLE_VFRAME_COMPONENTS] = [0; NA_SIMPLE_VFRAME_COMPONENTS];
 282         for comp in 0..components {
 283             let (width, height) = vbuf.get_dimensions(comp);
 284             w[comp] = width;
 285             h[comp] = height;
 286             s[comp] = vbuf.get_stride(comp);
 287             o[comp] = vbuf.get_offset(comp);
 288         }
 289         let flip = vinfo.flipped;
 290         Some(NASimpleVideoFrame {
 291             width:  w,
 292             height: h,
 293             flip,
 294             stride: s,
 295             offset: o,
 296             components,
 297             data: vbuf.data.as_mut().unwrap(),
 298             })
 299     }
 300 }
 301
 302 #[derive(Debug,Clone,Copy,PartialEq)]
 303 pub enum AllocatorError {
 304     TooLargeDimensions,
 305     FormatError,
 306 }
 307
 308 pub fn alloc_video_buffer(vinfo: NAVideoInfo, align: u8) -> Result<NABufferType, AllocatorError> {
 309     let fmt = &vinfo.format;
 310     let mut new_size: usize = 0;
 311     let mut offs:    Vec<usize> = Vec::new();
 312     let mut strides: Vec<usize> = Vec::new();
 313
 314     for i in 0..fmt.get_num_comp() {
 315         if fmt.get_chromaton(i) == None { return Err(AllocatorError::FormatError); }
 316     }
 317
 318     let align_mod = ((1 << align) as usize) - 1;
 319     let width  = ((vinfo.width  as usize) + align_mod) & !align_mod;
 320     let height = ((vinfo.height as usize) + align_mod) & !align_mod;
 321     let mut max_depth = 0;
 322     let mut all_packed = true;
 323     let mut all_bytealigned = true;
 324     for i in 0..fmt.get_num_comp() {
 325         let ochr = fmt.get_chromaton(i);
 326         if let None = ochr { continue; }
 327         let chr = ochr.unwrap();
 328         if !chr.is_packed() {
 329             all_packed = false;
 330         } else if ((chr.get_shift() + chr.get_depth()) & 7) != 0 {
 331             all_bytealigned = false;
 332         }
 333         max_depth = max(max_depth, chr.get_depth());
 334     }
 335     let unfit_elem_size = match fmt.get_elem_size() {
 336             2 | 4 => false,
 337             _ => true,
 338         };
 339
 340 //todo semi-packed like NV12
 341     if fmt.is_paletted() {
 342 //todo various-sized palettes?
 343         let stride = vinfo.get_format().get_chromaton(0).unwrap().get_linesize(width);
 344         let pic_sz = stride.checked_mul(height);
 345         if pic_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 346         let pal_size = 256 * (fmt.get_elem_size() as usize);
 347         let new_size = pic_sz.unwrap().checked_add(pal_size);
 348         if new_size == None { return Err(AllocatorError::TooLargeDimensions); }
 349         offs.push(0);
 350         offs.push(stride * height);
 351         strides.push(stride);
 352         let mut data: Vec<u8> = Vec::with_capacity(new_size.unwrap());
 353         data.resize(new_size.unwrap(), 0);
 354         let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 355         Ok(NABufferType::Video(buf))
 356     } else if !all_packed {
 357         for i in 0..fmt.get_num_comp() {
 358             let ochr = fmt.get_chromaton(i);
 359             if let None = ochr { continue; }
 360             let chr = ochr.unwrap();
 361             if !vinfo.is_flipped() {
 362                 offs.push(new_size as usize);
 363             }
 364             let stride = chr.get_linesize(width);
 365             let cur_h = chr.get_height(height);
 366             let cur_sz = stride.checked_mul(cur_h);
 367             if cur_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 368             let new_sz = new_size.checked_add(cur_sz.unwrap());
 369             if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 370             new_size = new_sz.unwrap();
 371             if vinfo.is_flipped() {
 372                 offs.push(new_size as usize);
 373             }
 374             strides.push(stride);
 375         }
 376         if max_depth <= 8 {
 377             let mut data: Vec<u8> = Vec::with_capacity(new_size);
 378             data.resize(new_size, 0);
 379             let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 380             Ok(NABufferType::Video(buf))
 381         } else if max_depth <= 16 {
 382             let mut data: Vec<u16> = Vec::with_capacity(new_size);
 383             data.resize(new_size, 0);
 384             let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 385             Ok(NABufferType::Video16(buf))
 386         } else {
 387             let mut data: Vec<u32> = Vec::with_capacity(new_size);
 388             data.resize(new_size, 0);
 389             let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 390             Ok(NABufferType::Video32(buf))
 391         }
 392     } else if all_bytealigned || unfit_elem_size {
 393         let elem_sz = fmt.get_elem_size();
 394         let line_sz = width.checked_mul(elem_sz as usize);
 395         if line_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 396         let new_sz = line_sz.unwrap().checked_mul(height);
 397         if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 398         new_size = new_sz.unwrap();
 399         let mut data: Vec<u8> = Vec::with_capacity(new_size);
 400         data.resize(new_size, 0);
 401         strides.push(line_sz.unwrap());
 402         let buf: NAVideoBuffer<u8> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 403         Ok(NABufferType::VideoPacked(buf))
 404     } else {
 405         let elem_sz = fmt.get_elem_size();
 406         let new_sz = width.checked_mul(height);
 407         if new_sz == None { return Err(AllocatorError::TooLargeDimensions); }
 408         new_size = new_sz.unwrap();
 409         match elem_sz {
 410             2 => {
 411                     let mut data: Vec<u16> = Vec::with_capacity(new_size);
 412                     data.resize(new_size, 0);
 413                     strides.push(width);
 414                     let buf: NAVideoBuffer<u16> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 415                     Ok(NABufferType::Video16(buf))
 416                 },
 417             4 => {
 418                     let mut data: Vec<u32> = Vec::with_capacity(new_size);
 419                     data.resize(new_size, 0);
 420                     strides.push(width);
 421                     let buf: NAVideoBuffer<u32> = NAVideoBuffer { data: NABufferRef::new(data), info: vinfo, offs: offs, strides: strides };
 422                     Ok(NABufferType::Video32(buf))
 423                 },
 424             _ => unreachable!(),
 425         }
 426     }
 427 }
 428
 429 pub fn alloc_audio_buffer(ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<NABufferType, AllocatorError> {
 430     let mut offs: Vec<usize> = Vec::new();
 431     if ainfo.format.is_planar() || (ainfo.channels == 1 && (ainfo.format.get_bits() % 8) == 0) {
 432         let len = nsamples.checked_mul(ainfo.channels as usize);
 433         if len == None { return Err(AllocatorError::TooLargeDimensions); }
 434         let length = len.unwrap();
 435         for i in 0..ainfo.channels {
 436             offs.push((i as usize) * nsamples);
 437         }
 438         if ainfo.format.is_float() {
 439             if ainfo.format.get_bits() == 32 {
 440                 let mut data: Vec<f32> = Vec::with_capacity(length);
 441                 data.resize(length, 0.0);
 442                 let buf: NAAudioBuffer<f32> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 443                 Ok(NABufferType::AudioF32(buf))
 444             } else {
 445                 Err(AllocatorError::TooLargeDimensions)
 446             }
 447         } else {
 448             if ainfo.format.get_bits() == 8 && !ainfo.format.is_signed() {
 449                 let mut data: Vec<u8> = Vec::with_capacity(length);
 450                 data.resize(length, 0);
 451                 let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 452                 Ok(NABufferType::AudioU8(buf))
 453             } else if ainfo.format.get_bits() == 16 && ainfo.format.is_signed() {
 454                 let mut data: Vec<i16> = Vec::with_capacity(length);
 455                 data.resize(length, 0);
 456                 let buf: NAAudioBuffer<i16> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 457                 Ok(NABufferType::AudioI16(buf))
 458             } else {
 459                 Err(AllocatorError::TooLargeDimensions)
 460             }
 461         }
 462     } else {
 463         let len = nsamples.checked_mul(ainfo.channels as usize);
 464         if len == None { return Err(AllocatorError::TooLargeDimensions); }
 465         let length = ainfo.format.get_audio_size(len.unwrap() as u64);
 466         let mut data: Vec<u8> = Vec::with_capacity(length);
 467         data.resize(length, 0);
 468         let buf: NAAudioBuffer<u8> = NAAudioBuffer { data: NABufferRef::new(data), info: ainfo, offs: offs, chmap: chmap, len: nsamples };
 469         Ok(NABufferType::AudioPacked(buf))
 470     }
 471 }
 472
 473 pub fn alloc_data_buffer(size: usize) -> Result<NABufferType, AllocatorError> {
 474     let mut data: Vec<u8> = Vec::with_capacity(size);
 475     data.resize(size, 0);
 476     let buf: NABufferRef<Vec<u8>> = NABufferRef::new(data);
 477     Ok(NABufferType::Data(buf))
 478 }
 479
 480 pub fn copy_buffer(buf: NABufferType) -> NABufferType {
 481     buf.clone()
 482 }
 483
 484 pub struct NABufferPool {
 485     pool:       Vec<NABufferRef<NABufferType>>,
 486     max_len:    usize,
 487 }
 488
 489 impl NABufferPool {
 490     pub fn new(max_len: usize) -> Self {
 491         Self {
 492             pool:       Vec::with_capacity(max_len),
 493             max_len,
 494         }
 495     }
 496     pub fn prealloc_video(&mut self, vinfo: NAVideoInfo, align: u8) -> Result<(), AllocatorError> {
 497         let nbufs = self.max_len - self.pool.len();
 498         for _ in 0..nbufs {
 499             let buf = alloc_video_buffer(vinfo.clone(), align)?;
 500             self.pool.push(NABufferRef::new(buf));
 501         }
 502         Ok(())
 503     }
 504     pub fn prealloc_audio(&mut self, ainfo: NAAudioInfo, nsamples: usize, chmap: NAChannelMap) -> Result<(), AllocatorError> {
 505         let nbufs = self.max_len - self.pool.len();
 506         for _ in 0..nbufs {
 507             let buf = alloc_audio_buffer(ainfo.clone(), nsamples, chmap.clone())?;
 508             self.pool.push(NABufferRef::new(buf));
 509         }
 510         Ok(())
 511     }
 512     pub fn add(&mut self, buf: NABufferType) -> bool {
 513         if self.pool.len() < self.max_len {
 514             self.pool.push(NABufferRef::new(buf));
 515             true
 516         } else {
 517             false
 518         }
 519     }
 520     pub fn get_free(&mut self) -> Option<NABufferRef<NABufferType>> {
 521         for e in self.pool.iter() {
 522             if e.get_num_refs() == 1 {
 523                 return Some(e.clone());
 524             }
 525         }
 526         None
 527     }
 528 }
 529
 530 #[allow(dead_code)]
 531 #[derive(Clone)]
 532 pub struct NACodecInfo {
 533     name:       &'static str,
 534     properties: NACodecTypeInfo,
 535     extradata:  Option<Arc<Vec<u8>>>,
 536 }
 537
 538 pub type NACodecInfoRef = Arc<NACodecInfo>;
 539
 540 impl NACodecInfo {
 541     pub fn new(name: &'static str, p: NACodecTypeInfo, edata: Option<Vec<u8>>) -> Self {
 542         let extradata = match edata {
 543             None => None,
 544             Some(vec) => Some(Arc::new(vec)),
 545         };
 546         NACodecInfo { name: name, properties: p, extradata: extradata }
 547     }
 548     pub fn new_ref(name: &'static str, p: NACodecTypeInfo, edata: Option<Arc<Vec<u8>>>) -> Self {
 549         NACodecInfo { name: name, properties: p, extradata: edata }
 550     }
 551     pub fn into_ref(self) -> NACodecInfoRef { Arc::new(self) }
 552     pub fn get_properties(&self) -> NACodecTypeInfo { self.properties }
 553     pub fn get_extradata(&self) -> Option<Arc<Vec<u8>>> {
 554         if let Some(ref vec) = self.extradata { return Some(vec.clone()); }
 555         None
 556     }
 557     pub fn get_name(&self) -> &'static str { self.name }
 558     pub fn is_video(&self) -> bool {
 559         if let NACodecTypeInfo::Video(_) = self.properties { return true; }
 560         false
 561     }
 562     pub fn is_audio(&self) -> bool {
 563         if let NACodecTypeInfo::Audio(_) = self.properties { return true; }
 564         false
 565     }
 566     pub fn new_dummy() -> Arc<Self> {
 567         Arc::new(DUMMY_CODEC_INFO)
 568     }
 569     pub fn replace_info(&self, p: NACodecTypeInfo) -> Arc<Self> {
 570         Arc::new(NACodecInfo { name: self.name, properties: p, extradata: self.extradata.clone() })
 571     }
 572 }
 573
 574 impl Default for NACodecInfo {
 575     fn default() -> Self { DUMMY_CODEC_INFO }
 576 }
 577
 578 impl fmt::Display for NACodecInfo {
 579     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 580         let edata = match self.extradata.clone() {
 581             None => format!("no extradata"),
 582             Some(v) => format!("{} byte(s) of extradata", v.len()),
 583         };
 584         write!(f, "{}: {} {}", self.name, self.properties, edata)
 585     }
 586 }
 587
 588 pub const DUMMY_CODEC_INFO: NACodecInfo = NACodecInfo {
 589                                 name: "none",
 590                                 properties: NACodecTypeInfo::None,
 591                                 extradata: None };
 592
 593 #[derive(Debug,Clone)]
 594 pub enum NAValue {
 595     None,
 596     Int(i32),
 597     Long(i64),
 598     String(String),
 599     Data(Arc<Vec<u8>>),
 600 }
 601
 602 #[derive(Debug,Clone,Copy,PartialEq)]
 603 #[allow(dead_code)]
 604 pub enum FrameType {
 605     I,
 606     P,
 607     B,
 608     Skip,
 609     Other,
 610 }
 611
 612 impl fmt::Display for FrameType {
 613     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 614         match *self {
 615             FrameType::I => write!(f, "I"),
 616             FrameType::P => write!(f, "P"),
 617             FrameType::B => write!(f, "B"),
 618             FrameType::Skip => write!(f, "skip"),
 619             FrameType::Other => write!(f, "x"),
 620         }
 621     }
 622 }
 623
 624 #[derive(Debug,Clone,Copy)]
 625 pub struct NATimeInfo {
 626     pts:            Option<u64>,
 627     dts:            Option<u64>,
 628     duration:       Option<u64>,
 629     tb_num:         u32,
 630     tb_den:         u32,
 631 }
 632
 633 impl NATimeInfo {
 634     pub fn new(pts: Option<u64>, dts: Option<u64>, duration: Option<u64>, tb_num: u32, tb_den: u32) -> Self {
 635         NATimeInfo { pts: pts, dts: dts, duration: duration, tb_num: tb_num, tb_den: tb_den }
 636     }
 637     pub fn get_pts(&self) -> Option<u64> { self.pts }
 638     pub fn get_dts(&self) -> Option<u64> { self.dts }
 639     pub fn get_duration(&self) -> Option<u64> { self.duration }
 640     pub fn set_pts(&mut self, pts: Option<u64>) { self.pts = pts; }
 641     pub fn set_dts(&mut self, dts: Option<u64>) { self.dts = dts; }
 642     pub fn set_duration(&mut self, dur: Option<u64>) { self.duration = dur; }
 643 }
 644
 645 #[allow(dead_code)]
 646 #[derive(Clone)]
 647 pub struct NAFrame {
 648     ts:             NATimeInfo,
 649     buffer:         NABufferType,
 650     info:           NACodecInfoRef,
 651     ftype:          FrameType,
 652     key:            bool,
 653     options:        HashMap<String, NAValue>,
 654 }
 655
 656 pub type NAFrameRef = Rc<RefCell<NAFrame>>;
 657
 658 fn get_plane_size(info: &NAVideoInfo, idx: usize) -> (usize, usize) {
 659     let chromaton = info.get_format().get_chromaton(idx);
 660     if let None = chromaton { return (0, 0); }
 661     let (hs, vs) = chromaton.unwrap().get_subsampling();
 662     let w = (info.get_width()  + ((1 << hs) - 1)) >> hs;
 663     let h = (info.get_height() + ((1 << vs) - 1)) >> vs;
 664     (w, h)
 665 }
 666
 667 impl NAFrame {
 668     pub fn new(ts:             NATimeInfo,
 669                ftype:          FrameType,
 670                keyframe:       bool,
 671                info:           NACodecInfoRef,
 672                options:        HashMap<String, NAValue>,
 673                buffer:         NABufferType) -> Self {
 674         NAFrame { ts: ts, buffer: buffer, info: info, ftype: ftype, key: keyframe, options: options }
 675     }
 676     pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() }
 677     pub fn get_frame_type(&self) -> FrameType { self.ftype }
 678     pub fn is_keyframe(&self) -> bool { self.key }
 679     pub fn set_frame_type(&mut self, ftype: FrameType) { self.ftype = ftype; }
 680     pub fn set_keyframe(&mut self, key: bool) { self.key = key; }
 681     pub fn get_time_information(&self) -> NATimeInfo { self.ts }
 682     pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
 683     pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
 684     pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
 685     pub fn set_pts(&mut self, pts: Option<u64>) { self.ts.set_pts(pts); }
 686     pub fn set_dts(&mut self, dts: Option<u64>) { self.ts.set_dts(dts); }
 687     pub fn set_duration(&mut self, dur: Option<u64>) { self.ts.set_duration(dur); }
 688
 689     pub fn get_buffer(&self) -> NABufferType { self.buffer.clone() }
 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 fn reduce_timebase(tb_num: u32, tb_den: u32) -> (u32, u32) {
 743     if tb_num == 0 { return (tb_num, tb_den); }
 744     if (tb_den % tb_num) == 0 { return (1, tb_den / tb_num); }
 745
 746     let mut a = tb_num;
 747     let mut b = tb_den;
 748
 749     while a != b {
 750         if a > b { a -= b; }
 751         else if b > a { b -= a; }
 752     }
 753
 754     (tb_num / a, tb_den / a)
 755 }
 756
 757 impl NAStream {
 758     pub fn new(mt: StreamType, id: u32, info: NACodecInfo, tb_num: u32, tb_den: u32) -> Self {
 759         let (n, d) = reduce_timebase(tb_num, tb_den);
 760         NAStream { media_type: mt, id: id, num: 0, info: info.into_ref(), tb_num: n, tb_den: d }
 761     }
 762     pub fn get_id(&self) -> u32 { self.id }
 763     pub fn get_num(&self) -> usize { self.num }
 764     pub fn set_num(&mut self, num: usize) { self.num = num; }
 765     pub fn get_info(&self) -> NACodecInfoRef { self.info.clone() }
 766     pub fn get_timebase(&self) -> (u32, u32) { (self.tb_num, self.tb_den) }
 767     pub fn set_timebase(&mut self, tb_num: u32, tb_den: u32) {
 768         let (n, d) = reduce_timebase(tb_num, tb_den);
 769         self.tb_num = n;
 770         self.tb_den = d;
 771     }
 772 }
 773
 774 impl fmt::Display for NAStream {
 775     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 776         write!(f, "({}#{} @ {}/{} - {})", self.media_type, self.id, self.tb_num, self.tb_den, self.info.get_properties())
 777     }
 778 }
 779
 780 #[allow(dead_code)]
 781 pub struct NAPacket {
 782     stream:         Rc<NAStream>,
 783     ts:             NATimeInfo,
 784     buffer:         NABufferRef<Vec<u8>>,
 785     keyframe:       bool,
 786 //    options:        HashMap<String, NAValue<'a>>,
 787 }
 788
 789 impl NAPacket {
 790     pub fn new(str: Rc<NAStream>, ts: NATimeInfo, kf: bool, vec: Vec<u8>) -> Self {
 791 //        let mut vec: Vec<u8> = Vec::new();
 792 //        vec.resize(size, 0);
 793         NAPacket { stream: str, ts: ts, keyframe: kf, buffer: NABufferRef::new(vec) }
 794     }
 795     pub fn get_stream(&self) -> Rc<NAStream> { self.stream.clone() }
 796     pub fn get_time_information(&self) -> NATimeInfo { self.ts }
 797     pub fn get_pts(&self) -> Option<u64> { self.ts.get_pts() }
 798     pub fn get_dts(&self) -> Option<u64> { self.ts.get_dts() }
 799     pub fn get_duration(&self) -> Option<u64> { self.ts.get_duration() }
 800     pub fn is_keyframe(&self) -> bool { self.keyframe }
 801     pub fn get_buffer(&self) -> NABufferRef<Vec<u8>> { self.buffer.clone() }
 802 }
 803
 804 impl Drop for NAPacket {
 805     fn drop(&mut self) {}
 806 }
 807
 808 impl fmt::Display for NAPacket {
 809     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 810         let mut foo = format!("[pkt for {} size {}", self.stream, self.buffer.len());
 811         if let Some(pts) = self.ts.pts { foo = format!("{} pts {}", foo, pts); }
 812         if let Some(dts) = self.ts.dts { foo = format!("{} dts {}", foo, dts); }
 813         if let Some(dur) = self.ts.duration { foo = format!("{} duration {}", foo, dur); }
 814         if self.keyframe { foo = format!("{} kf", foo); }
 815         foo = foo + "]";
 816         write!(f, "{}", foo)
 817     }
 818 }
 819
 820 pub trait FrameFromPacket {
 821     fn new_from_pkt(pkt: &NAPacket, info: NACodecInfoRef, buf: NABufferType) -> NAFrame;
 822     fn fill_timestamps(&mut self, pkt: &NAPacket);
 823 }
 824
 825 impl FrameFromPacket for NAFrame {
 826     fn new_from_pkt(pkt: &NAPacket, info: NACodecInfoRef, buf: NABufferType) -> NAFrame {
 827         NAFrame::new(pkt.ts, FrameType::Other, pkt.keyframe, info, HashMap::new(), buf)
 828     }
 829     fn fill_timestamps(&mut self, pkt: &NAPacket) {
 830         self.ts = pkt.get_time_information();
 831     }
 832 }
 833