videoplayer/src/main.rs

   1 extern crate sdl2;
   2 extern crate nihav_core;
   3 extern crate nihav_registry;
   4 extern crate nihav_allstuff;
   5
   6 use std::env;
   7 use std::fs::File;
   8 use std::io::Write;
   9 use std::path::Path;
  10 use std::time::{Duration, Instant};
  11 use std::thread;
  12 use std::sync::atomic::{AtomicU8, Ordering};
  13
  14 use sdl2::event::{Event, WindowEvent};
  15 use sdl2::keyboard::{Keycode, Mod};
  16 use sdl2::mouse::MouseButton;
  17 use sdl2::render::{Canvas, Texture, TextureCreator};
  18 use sdl2::pixels::PixelFormatEnum;
  19 use sdl2::video::{Window, WindowContext};
  20
  21 use nihav_registry::detect;
  22 use nihav_core::frame::*;
  23 use nihav_core::io::byteio::{FileReader, ByteReader};
  24 use nihav_core::reorder::*;
  25 use nihav_core::codecs::*;
  26 use nihav_core::demuxers::*;
  27 use nihav_registry::register::*;
  28 use nihav_allstuff::*;
  29
  30 mod audiodec;
  31 use audiodec::*;
  32 mod videodec;
  33 use videodec::*;
  34 mod osd;
  35 use osd::*;
  36
  37 #[repr(u8)]
  38 #[derive(Clone,Copy,Debug,PartialEq)]
  39 enum DecodingState {
  40     Normal,
  41     Waiting,
  42     Flush,
  43     Prefetch,
  44     Error,
  45     End,
  46 }
  47
  48 impl Default for DecodingState {
  49     fn default() -> Self { DecodingState::Normal }
  50 }
  51
  52 impl From<u8> for DecodingState {
  53     fn from(val: u8) -> Self {
  54         match val {
  55             0 => DecodingState::Normal,
  56             1 => DecodingState::Waiting,
  57             2 => DecodingState::Flush,
  58             3 => DecodingState::Prefetch,
  59             4 => DecodingState::End,
  60             _ => DecodingState::Error,
  61         }
  62     }
  63 }
  64
  65 struct DecoderState {
  66     state:  AtomicU8
  67 }
  68
  69 impl DecoderState {
  70     const fn new() -> Self {
  71         Self {
  72             state:  AtomicU8::new(DecodingState::Normal as u8)
  73         }
  74     }
  75     fn set_state(&self, state: DecodingState) {
  76         self.state.store(state as u8, Ordering::Release);
  77     }
  78     fn get_state(&self) -> DecodingState {
  79         self.state.load(Ordering::Acquire).into()
  80     }
  81     fn is_flushing(&self) -> bool {
  82         matches!(self.get_state(), DecodingState::Flush | DecodingState::Error)
  83     }
  84 }
  85
  86 #[cfg(feature="debug")]
  87 macro_rules! debug_log {
  88     ($log: expr; $blk: block) => {
  89         $log.logfile.write($blk.as_bytes()).unwrap();
  90         $log.logfile.write(b"\n").unwrap();
  91     };
  92 }
  93 #[cfg(not(feature="debug"))]
  94 macro_rules! debug_log {
  95     ($log: expr; $blk: block) => {};
  96 }
  97
  98 pub enum PktSendEvent {
  99     Packet(NAPacket),
 100     GetFrames,
 101     Flush,
 102     End,
 103     ImmediateEnd,
 104     HurryUp,
 105 }
 106
 107 pub enum DecoderType {
 108     Audio(Box<dyn NADecoder + Send>),
 109     Video(Box<dyn NADecoder + Send>, Box<dyn FrameReorderer + Send>),
 110     VideoMT(Box<dyn NADecoderMT + Send>, MTFrameReorderer),
 111 }
 112
 113 pub struct DecoderStuff {
 114     pub dsupp:  Box<NADecoderSupport>,
 115     pub dec:    DecoderType,
 116 }
 117
 118 fn format_time(ms: u64) -> String {
 119     let s = ms / 1000;
 120     let ds = (ms % 1000) / 100;
 121     let (min, s) = (s / 60, s % 60);
 122     let (h, min) = (min / 60, min % 60);
 123     if h == 0 {
 124         if min == 0 {
 125             format!("{}.{}", s, ds)
 126         } else {
 127             format!("{}:{:02}.{}", min, s, ds)
 128         }
 129     } else {
 130         format!("{}:{:02}:{:02}.{}", h, min, s, ds)
 131     }
 132 }
 133
 134 const FRAME_QUEUE_LEN: usize = 25;
 135 const MAX_VOLUME: usize = 200;
 136
 137 pub type FrameRecord = (NABufferType, u64);
 138
 139 pub struct TimeKeep {
 140     ref_time:       Instant,
 141     ref_ts:         u64,
 142 }
 143
 144 impl TimeKeep {
 145     fn new() -> Self {
 146         Self {
 147             ref_time:   Instant::now(),
 148             ref_ts:     0,
 149         }
 150     }
 151     pub fn get_cur_time(&self) -> u64 {
 152         let add = self.ref_time.elapsed().as_millis() as u64;
 153         self.ref_ts + add
 154     }
 155     fn reset_ts(&mut self) {
 156         self.ref_ts = 0;
 157     }
 158     fn reset_all(&mut self, ts: u64) {
 159         self.ref_time = Instant::now();
 160         self.ref_ts   = ts;
 161     }
 162     fn set_ts(&mut self) {
 163         self.ref_ts = self.get_cur_time();
 164     }
 165     fn set_time(&mut self) {
 166         self.ref_time = Instant::now();
 167     }
 168 }
 169
 170 pub struct DispFrame<'a> {
 171     pub ts:         u64,
 172     pub is_yuv:     bool,
 173     pub valid:      bool,
 174     pub rgb_tex:    Texture<'a>,
 175     pub yuv_tex:    Texture<'a>,
 176 }
 177
 178 pub struct DispQueue<'a> {
 179     pub pool:       Vec<DispFrame<'a>>,
 180     pub first_ts:   u64,
 181     pub last_ts:    u64,
 182     pub start:      usize,
 183     pub end:        usize,
 184     pub len:        usize,
 185     pub width:      usize,
 186     pub height:     usize,
 187 }
 188
 189 impl<'a> DispQueue<'a> {
 190     fn new(texture_creator: &'a TextureCreator<WindowContext>, width: usize, height: usize, len: usize) -> Self {
 191         let mut pool = Vec::with_capacity(len);
 192         for _ in 0..len + 1 {
 193             let rgb_tex = texture_creator.create_texture_streaming(PixelFormatEnum::RGB24, width as u32, height as u32).expect("failed to create RGB texture");
 194             let yuv_tex = texture_creator.create_texture_streaming(PixelFormatEnum::IYUV, ((width + 1) & !1) as u32, ((height + 1) & !1) as u32).expect("failed to create YUV texture");
 195             pool.push(DispFrame{ ts: 0, is_yuv: false, valid: false, rgb_tex, yuv_tex });
 196         }
 197         pool[len].is_yuv = false;
 198         pool[len].rgb_tex.with_lock(None, |buffer: &mut [u8], _pitch: usize| {
 199                 for el in buffer.iter_mut() { *el = 0; }
 200             }).expect("RGB texture could not be locked");
 201
 202         Self { pool, first_ts: 0, last_ts: 0, start: 0, end: 0, len, width, height }
 203     }
 204
 205     fn flush(&mut self) {
 206         self.start = 0;
 207         self.end = 0;
 208         self.first_ts = 0;
 209         self.last_ts = 0;
 210         for frm in self.pool.iter_mut() {
 211             frm.valid = false;
 212         }
 213     }
 214
 215     fn get_last_texture(&mut self, osd: &OSD) -> &Texture<'a> {
 216         if self.pool[self.len].is_yuv {
 217             if osd.is_active() {
 218                 self.pool[self.len].yuv_tex.with_lock(None, |buffer: &mut [u8], pitch: usize| {
 219                         osd.draw_yuv(buffer, pitch);
 220                     }).expect("YUV texture locking failure");
 221             }
 222             &self.pool[self.len].yuv_tex
 223         } else {
 224             if osd.is_active() {
 225                 self.pool[self.len].rgb_tex.with_lock(None, |buffer: &mut [u8], pitch: usize| {
 226                         osd.draw_rgb(buffer, pitch);
 227                     }).expect("RGB texture locking failure");
 228             }
 229             &self.pool[self.len].rgb_tex
 230         }
 231     }
 232     pub fn is_empty(&self) -> bool { self.start == self.end }
 233     pub fn is_full(&self) -> bool { self.len == 0 || self.start == (self.end + 1) % self.len }
 234     pub fn move_end(&mut self) {
 235         self.end += 1;
 236         if self.end >= self.len {
 237             self.end -= self.len;
 238         }
 239     }
 240     pub fn move_start(&mut self) {
 241         self.pool.swap(self.start, self.len);
 242         self.start += 1;
 243         if self.start >= self.len {
 244             self.start -= self.len;
 245         }
 246         if !self.is_empty() {
 247             self.first_ts = self.pool[self.start].ts;
 248         }
 249     }
 250 }
 251
 252 fn try_display(disp_queue: &mut DispQueue, canvas: &mut Canvas<Window>, osd: &mut OSD, ctime: &TimeKeep) -> Option<u64> {
 253     while !disp_queue.is_empty() {
 254         let disp_time = disp_queue.first_ts;
 255         let ctime = ctime.get_cur_time();
 256         if disp_time > ctime + 10 {
 257             return Some(disp_time - ctime);
 258         } else if disp_time + 10 < ctime {
 259             disp_queue.move_start();
 260         } else {
 261             if osd.is_active() {
 262                 osd.prepare(ctime);
 263             }
 264             let frm = &mut disp_queue.pool[disp_queue.start];
 265             let texture = if frm.is_yuv {
 266                     if osd.is_active() {
 267                         frm.yuv_tex.with_lock(None, |buffer: &mut [u8], pitch: usize| {
 268                                 osd.draw_yuv(buffer, pitch);
 269                             }).expect("YUV texture locking failure");
 270                     }
 271                     &frm.yuv_tex
 272                 } else {
 273                     if osd.is_active() {
 274                         frm.rgb_tex.with_lock(None, |buffer: &mut [u8], pitch: usize| {
 275                                 osd.draw_rgb(buffer, pitch);
 276                             }).expect("RGB texture locking failure");
 277                     }
 278                     &frm.rgb_tex
 279                 };
 280             canvas.clear();
 281             canvas.copy(texture, None, None).expect("canvas blit failure");
 282             canvas.present();
 283
 284             disp_queue.move_start();
 285             if !disp_queue.is_empty() {
 286                 return Some((disp_queue.first_ts - ctime).saturating_sub(2));
 287             } else {
 288                 return None;
 289             }
 290         }
 291     }
 292     None
 293 }
 294
 295 struct Player {
 296     sdl_context:    sdl2::Sdl,
 297     vsystem:        sdl2::VideoSubsystem,
 298     asystem:        sdl2::AudioSubsystem,
 299     xpos:           Option<i32>,
 300     ypos:           Option<i32>,
 301
 302     acontrol:       AudioControl,
 303     vcontrol:       VideoControl,
 304
 305     play_video:     bool,
 306     play_audio:     bool,
 307     has_video:      bool,
 308     has_audio:      bool,
 309     video_str:      u32,
 310     audio_str:      u32,
 311
 312     vthreads:       usize,
 313     use_mt:         bool,
 314
 315     paused:         bool,
 316     mute:           bool,
 317     volume:         usize,
 318     end:            bool,
 319
 320     tkeep:          TimeKeep,
 321
 322     debug:          bool,
 323     osd:            OSD,
 324
 325     #[cfg(feature="debug")]
 326     logfile:        File,
 327 }
 328
 329 impl Player {
 330     fn new() -> Self {
 331         let sdl_context = sdl2::init().expect("SDL2 init failure");
 332         let vsystem = sdl_context.video().expect("video subsystem init failure");
 333         let asystem = sdl_context.audio().expect("audio subsystem init failure");
 334         vsystem.disable_screen_saver();
 335         let acontrol = AudioControl::new(None, None, &asystem);
 336         let vcontrol = VideoControl::new(None, 0, 0, 0, 0);
 337         Self {
 338             sdl_context, asystem, vsystem,
 339             xpos:           None,
 340             ypos:           None,
 341
 342             acontrol, vcontrol,
 343
 344             play_video:     true,
 345             play_audio:     true,
 346             has_video:      false,
 347             has_audio:      false,
 348             video_str:      0,
 349             audio_str:      0,
 350
 351             vthreads:       3,
 352             use_mt:         true,
 353
 354             paused:         false,
 355             mute:           false,
 356             volume:         100,
 357             end:            false,
 358
 359             tkeep:          TimeKeep::new(),
 360
 361             debug:          false,
 362             osd:            OSD::new(),
 363
 364             #[cfg(feature="debug")]
 365             logfile:        File::create("debug.log").expect("'debug.log' should be available for writing"),
 366         }
 367     }
 368     fn seek(&mut self, off: u64, fwd: bool, dmx: &mut Demuxer, disp_queue: &mut DispQueue) -> Result<(), ()> {
 369         let cur_time = self.tkeep.get_cur_time();
 370         let seektime = if fwd { cur_time + off * 1000 } else {
 371                 cur_time.saturating_sub(off * 1000) };
 372         debug_log!(self; {format!(" seek to {}", seektime)});
 373
 374         let ret = dmx.seek(NATimePoint::Milliseconds(seektime));
 375         if ret.is_err() {
 376             println!(" seek error");
 377             return Ok(()); //TODO: not ignore some of seek errors?
 378         }
 379
 380         self.acontrol.flush();
 381         self.vcontrol.flush();
 382         disp_queue.flush();
 383
 384         self.tkeep.reset_ts();
 385         self.prefill(dmx, disp_queue)?;
 386         if !disp_queue.is_empty() {
 387             self.tkeep.reset_all(disp_queue.first_ts);
 388         } else {
 389             let mut iterations = 0;
 390             let mut time = self.acontrol.get_time();
 391             while time.is_none() {
 392                 iterations += 1;
 393                 std::thread::yield_now();
 394                 if iterations > 1000000 { println!(" still no time set?!"); break; }
 395                 time = self.acontrol.get_time();
 396             }
 397             if let Some(time) = time {
 398                 self.tkeep.reset_all(time);
 399             }
 400         }
 401         if !self.paused {
 402             self.acontrol.resume();
 403         }
 404         Ok(())
 405     }
 406     fn prefill(&mut self, dmx: &mut Demuxer, disp_queue: &mut DispQueue) -> Result<(), ()> {
 407         debug_log!(self; {" prefilling"});
 408         while self.vcontrol.get_queue_size() < FRAME_QUEUE_LEN {
 409             let mut try_send = self.acontrol.get_queue_size() < FRAME_QUEUE_LEN && (!self.has_video || (!self.vcontrol.is_filled(FRAME_QUEUE_LEN) && !disp_queue.is_full()));
 410
 411             if !self.vcontrol.try_send_queued() && self.vcontrol.get_queue_size() > FRAME_QUEUE_LEN / 2 {
 412                 try_send = false;
 413             }
 414             if !self.acontrol.try_send_queued() && self.acontrol.get_queue_size() > FRAME_QUEUE_LEN / 2 {
 415                 try_send = false;
 416             }
 417             if try_send {
 418                 match dmx.get_frame() {
 419                     Err(DemuxerError::EOF) => break,
 420                     Err(_) => break,
 421                     Ok(pkt) => {
 422                         let streamno = pkt.get_stream().get_id();
 423                         if self.has_video && streamno == self.video_str {
 424                             self.vcontrol.try_send_video(PktSendEvent::Packet(pkt));
 425                         } else if self.has_audio && streamno == self.audio_str {
 426                             self.acontrol.try_send_audio(PktSendEvent::Packet(pkt));
 427                         }
 428                     }
 429                 };
 430             }
 431             self.vcontrol.fill(disp_queue);
 432
 433             if !try_send {
 434                 break;
 435             }
 436         }
 437         if self.has_video {
 438             while self.vcontrol.get_queue_size() > 0 && !disp_queue.is_full() {
 439                 self.vcontrol.try_send_queued();
 440                 self.vcontrol.fill(disp_queue);
 441                 std::thread::sleep(Duration::from_millis(10));
 442             }
 443             self.vcontrol.wait_for_frames()?;
 444             self.vcontrol.fill(disp_queue);
 445         }
 446         debug_log!(self; {format!(" prefilling done, frames {}-{} audio {}", disp_queue.start, disp_queue.end, self.acontrol.get_fill())});
 447         Ok(())
 448     }
 449     fn toggle_pause(&mut self) {
 450         self.paused = !self.paused;
 451         if self.paused {
 452             self.vsystem.enable_screen_saver();
 453             self.tkeep.set_ts();
 454         } else {
 455             self.vsystem.disable_screen_saver();
 456             self.tkeep.set_time();
 457         }
 458         if self.paused {
 459             self.acontrol.pause();
 460         } else {
 461             self.acontrol.resume();
 462         }
 463     }
 464     fn handle_events(&mut self, event_pump: &mut sdl2::EventPump, canvas: &mut Canvas<Window>, dmx: &mut Demuxer, disp_queue: &mut DispQueue) -> Result<bool, ()> {
 465         for event in event_pump.poll_iter() {
 466             if let Event::Quit {..} = event {
 467                 self.end = true;
 468                 println!();
 469                 return Ok(true);
 470             }
 471             if let Event::Window {win_event: WindowEvent::Exposed, ..} = event {
 472                 canvas.clear();
 473                 canvas.copy(disp_queue.get_last_texture(&self.osd), None, None).expect("blitting failure");
 474                 canvas.present();
 475             }
 476             if let Event::MouseButtonDown {mouse_btn: MouseButton::Right, ..} = event {
 477                 self.toggle_pause();
 478             }
 479             if let Event::KeyDown {keycode: Some(keycode), keymod, ..} = event {
 480                 match keycode {
 481                     Keycode::Escape => {
 482                         self.end = true;
 483                         println!();
 484                         return Ok(true);
 485                     },
 486                     Keycode::Q if matches!(keymod, Mod::RSHIFTMOD | Mod::LSHIFTMOD) => {
 487                         self.end = true;
 488                         println!();
 489                         return Ok(true);
 490                     },
 491                     Keycode::Return => return Ok(true),
 492                     Keycode::Right      => { self.seek(10, true,  dmx, disp_queue)?; },
 493                     Keycode::Left       => { self.seek(10, false, dmx, disp_queue)?; },
 494                     Keycode::Up         => { self.seek(60, true,  dmx, disp_queue)?; },
 495                     Keycode::Down       => { self.seek(60, false, dmx, disp_queue)?; },
 496                     Keycode::PageUp     => { self.seek(600, true,  dmx, disp_queue)?; },
 497                     Keycode::PageDown   => { self.seek(600, false, dmx, disp_queue)?; },
 498                     Keycode::Space => { self.toggle_pause(); },
 499                     Keycode::Plus | Keycode::KpPlus => {
 500                         self.volume = (self.volume + 10).min(MAX_VOLUME);
 501                         if !self.mute {
 502                             self.acontrol.set_volume(self.volume);
 503                         }
 504                     },
 505                     Keycode::Minus | Keycode::KpMinus => {
 506                         self.volume = self.volume.saturating_sub(10);
 507                         if !self.mute {
 508                             self.acontrol.set_volume(self.volume);
 509                         }
 510                     },
 511                     Keycode::D => {
 512                         self.debug = !self.debug;
 513                     },
 514                     Keycode::M => {
 515                         self.mute = !self.mute;
 516                         if self.mute {
 517                             self.acontrol.set_volume(0);
 518                         } else {
 519                             self.acontrol.set_volume(self.volume);
 520                         }
 521                     },
 522                     Keycode::H => {
 523                         self.vcontrol.try_send_video(PktSendEvent::HurryUp);
 524                     },
 525                     Keycode::O => {
 526                         self.osd.toggle();
 527                     },
 528                     _ => {},
 529                 };
 530                 if !self.paused {
 531                     print!("{:60}\r", ' ');
 532                     std::io::stdout().flush().unwrap();
 533                 }
 534             }
 535         }
 536         Ok(false)
 537     }
 538     fn play(&mut self, name: &str, start_time: NATimePoint) {
 539         debug_log!(self; {format!("Playing {}", name)});
 540
 541         // prepare data source
 542         let path = Path::new(name);
 543         let mut file = if let Ok(handle) = File::open(path) {
 544                 handle
 545             } else {
 546                 println!("failed to open {}", name);
 547                 return;
 548             };
 549         let dmx_fact;
 550         let mut fr = FileReader::new_read(&mut file);
 551         let mut br = ByteReader::new(&mut fr);
 552         let res = detect::detect_format(name, &mut br);
 553         if res.is_none() {
 554             println!("cannot detect format for {}", name);
 555             return;
 556         }
 557         let (dmx_name, _score) = res.unwrap();
 558         debug_log!(self; {format!(" found demuxer {} with score {:?}", dmx_name, _score)});
 559         println!("trying demuxer {} on {}", dmx_name, name);
 560
 561         let mut dmx_reg = RegisteredDemuxers::new();
 562         nihav_register_all_demuxers(&mut dmx_reg);
 563         let mut dec_reg = RegisteredDecoders::new();
 564         nihav_register_all_decoders(&mut dec_reg);
 565         let mut mtdec_reg = RegisteredMTDecoders::new();
 566         if self.use_mt {
 567             nihav_register_all_mt_decoders(&mut mtdec_reg);
 568         }
 569
 570         let ret = dmx_reg.find_demuxer(dmx_name);
 571         if ret.is_none() {
 572             println!("error finding {} demuxer", dmx_name);
 573             return;
 574         }
 575         dmx_fact = ret.unwrap();
 576         br.seek(SeekFrom::Start(0)).expect("should be able to seek to the start");
 577         let ret = create_demuxer(dmx_fact, &mut br);
 578         if ret.is_err() {
 579             println!("error creating demuxer");
 580             return;
 581         }
 582         let mut dmx = ret.unwrap();
 583         if start_time != NATimePoint::None {
 584             debug_log!(self; {format!(" start seek to {}", start_time)});
 585             if dmx.seek(start_time).is_err() {
 586                 println!("initial seek failed");
 587             }
 588         }
 589
 590         let mut width = 640;
 591         let mut height = 480;
 592         let mut tb_num = 0;
 593         let mut tb_den = 0;
 594         let mut ainfo: Option<NAAudioInfo> = None;
 595
 596         let mut video_dec: Option<DecoderStuff> = None;
 597         let mut audio_dec: Option<DecoderStuff> = None;
 598
 599         let duration = dmx.get_duration();
 600         if duration != 0 {
 601             println!(" total duration {}", format_time(duration));
 602         }
 603         self.has_video = false;
 604         self.has_audio = false;
 605         self.osd.reset();
 606         self.osd.set_duration(duration);
 607         for i in 0..dmx.get_num_streams() {
 608             let s = dmx.get_stream(i).unwrap();
 609             let info = s.get_info();
 610             let decfunc = dec_reg.find_decoder(info.get_name());
 611             let decfunc_mt = mtdec_reg.find_decoder(info.get_name());
 612             println!("stream {} - {} {}", i, s, info.get_name());
 613             debug_log!(self; {format!(" stream {} - {} {}", i, s, info.get_name())});
 614             let str_id = s.get_id();
 615             if info.is_video() {
 616                 if video_dec.is_none() && self.play_video {
 617                     if let Some(decfunc) = decfunc_mt {
 618                         let mut dec = (decfunc)();
 619                         let mut dsupp = Box::new(NADecoderSupport::new());
 620                         let props = info.get_properties().get_video_info().unwrap();
 621                         if props.get_width() != 0 {
 622                             width  = props.get_width();
 623                             height = props.get_height();
 624                         }
 625                         if dec.init(&mut dsupp, info.clone(), self.vthreads).is_ok() {
 626                             video_dec = Some(DecoderStuff{ dsupp, dec: DecoderType::VideoMT(dec, MTFrameReorderer::new()) });
 627                             self.video_str = str_id;
 628                             let (tbn, tbd) = s.get_timebase();
 629                             tb_num = tbn;
 630                             tb_den = tbd;
 631                             self.has_video = true;
 632                             continue;
 633                         } else {
 634                             println!("failed to create multi-threaded decoder, falling back");
 635                         }
 636                     }
 637                     if let Some(decfunc) = decfunc {
 638                         let mut dec = (decfunc)();
 639                         let mut dsupp = Box::new(NADecoderSupport::new());
 640                         let props = info.get_properties().get_video_info().unwrap();
 641                         if props.get_width() != 0 {
 642                             width  = props.get_width();
 643                             height = props.get_height();
 644                         }
 645                         let desc = get_codec_description(info.get_name());
 646                         let (reorder_depth, reord) = if desc.is_none() || (desc.unwrap().caps & CODEC_CAP_COMPLEX_REORDER) == 0 {
 647                                 let reord: Box<dyn FrameReorderer + Send> = Box::new(IPBReorderer::new());
 648                                 (3, reord)
 649                             } else {
 650                                 let reord: Box<dyn FrameReorderer + Send> = Box::new(ComplexReorderer::new());
 651                                 (16, reord)
 652                             };
 653                         dsupp.pool_u8 = NAVideoBufferPool::new(reorder_depth);
 654                         dsupp.pool_u16 = NAVideoBufferPool::new(reorder_depth);
 655                         dsupp.pool_u32 = NAVideoBufferPool::new(reorder_depth);
 656                         if dec.init(&mut dsupp, info).is_err() {
 657                             println!("failed to initialise video decoder");
 658                             return;
 659                         }
 660                         video_dec = Some(DecoderStuff{ dsupp, dec: DecoderType::Video(dec, reord) });
 661                         self.video_str = str_id;
 662                         let (tbn, tbd) = s.get_timebase();
 663                         tb_num = tbn;
 664                         tb_den = tbd;
 665                         self.has_video = true;
 666                     } else {
 667                         println!("no video decoder for {} found!", info.get_name());
 668                     }
 669                 }
 670             } else if info.is_audio() {
 671                 if audio_dec.is_none() && self.play_audio {
 672                     if let Some(decfunc) = decfunc {
 673                         let mut dec = (decfunc)();
 674                         let mut dsupp = Box::new(NADecoderSupport::new());
 675                         ainfo = info.get_properties().get_audio_info();
 676                         if dec.init(&mut dsupp, info).is_err() {
 677                             println!("failed to initialise audio decoder");
 678                             return;
 679                         }
 680                         audio_dec = Some(DecoderStuff{ dsupp, dec: DecoderType::Audio(dec) });
 681                         self.audio_str = str_id;
 682                         self.has_audio = true;
 683                     } else {
 684                         println!("no audio decoder for {} found!", info.get_name());
 685                     }
 686                 }
 687             } else {
 688                 println!("decoder {} not found", info.get_name());
 689             }
 690         }
 691         if !self.has_video && !self.has_audio {
 692             println!("No playable streams found.");
 693             return;
 694         }
 695
 696         while (width <= 384) && (height <= 288) {
 697             width <<= 1;
 698             height <<= 1;
 699         }
 700
 701         // prepare playback structure
 702         let mut new_vcontrol = VideoControl::new(video_dec, width, height, tb_num, tb_den);
 703         std::mem::swap(&mut self.vcontrol, &mut new_vcontrol);
 704
 705         let mut new_acontrol = AudioControl::new(audio_dec, ainfo, &self.asystem);
 706         std::mem::swap(&mut self.acontrol, &mut new_acontrol);
 707
 708         if self.mute {
 709             self.acontrol.set_volume(0);
 710         } else {
 711             self.acontrol.set_volume(self.volume);
 712         }
 713
 714         let fname = path.file_name();
 715         let wname = if let Some(fname) = fname {
 716                 "NihAV player - ".to_owned() + fname.to_str().expect("should be able to set window title")
 717             } else {
 718                 "NihAV player".to_owned()
 719             };
 720         let mut builder = self.vsystem.window(&wname, width as u32, height as u32);
 721         let window = if let (Some(xpos), Some(ypos)) = (self.xpos, self.ypos) {
 722                 builder.position(xpos, ypos).build().expect("should be able to set window position")
 723             } else {
 724                 builder.position_centered().build().expect("should be able to centre window")
 725             };
 726         let mut canvas = window.into_canvas().build().expect("should be able to build canvas");
 727         let texture_creator = canvas.texture_creator();
 728         let mut disp_q = DispQueue::new(&texture_creator, width, height, if self.has_video { FRAME_QUEUE_LEN } else { 0 });
 729         if !self.has_video {
 730             canvas.clear();
 731             canvas.copy(disp_q.get_last_texture(&self.osd), None, None).expect("blit failure");
 732             canvas.present();
 733         }
 734
 735         self.has_audio = self.acontrol.has_audio();
 736         if !self.has_video && !self.has_audio {
 737             println!("No playable streams.");
 738             return;
 739         }
 740
 741         // play
 742         if self.prefill(&mut dmx, &mut disp_q).is_err() {
 743             std::mem::swap(&mut self.vcontrol, &mut new_vcontrol);
 744             new_vcontrol.finish();
 745             std::mem::swap(&mut self.acontrol, &mut new_acontrol);
 746             new_acontrol.finish();
 747             return;
 748         }
 749         self.tkeep.reset_all(if !disp_q.is_empty() { disp_q.first_ts } else { 0 });
 750         if !self.paused {
 751             self.acontrol.resume();
 752         }
 753         let mut event_pump = self.sdl_context.event_pump().expect("should be able to create event pump");
 754         let mut last_disp = Instant::now();
 755         let mut has_data = true;
 756         'main: loop {
 757             let ret = self.handle_events(&mut event_pump, &mut canvas, &mut dmx, &mut disp_q);
 758             if matches!(ret, Ok(true) | Err(_)) {
 759                 println!();
 760                 break 'main;
 761             }
 762             if !self.paused {
 763                 let mut try_send = self.acontrol.get_queue_size() < FRAME_QUEUE_LEN && self.vcontrol.get_queue_size() < FRAME_QUEUE_LEN;
 764                 if !self.vcontrol.try_send_queued() && self.vcontrol.is_filled(FRAME_QUEUE_LEN) {
 765                     try_send = false;
 766                 }
 767                 if !self.acontrol.try_send_queued() {
 768                     try_send = false;
 769                 }
 770                 while has_data && try_send {
 771                     match dmx.get_frame() {
 772                         Err(DemuxerError::EOF) => {
 773                             self.vcontrol.try_send_video(PktSendEvent::End);
 774                             self.acontrol.try_send_audio(PktSendEvent::End);
 775                             has_data = false;
 776                         },
 777                         Err(err) => {
 778                             println!("demuxer error {:?}", err);
 779                             if err == DemuxerError::IOError {
 780                                 self.vcontrol.try_send_video(PktSendEvent::End);
 781                                 self.acontrol.try_send_audio(PktSendEvent::End);
 782                                 has_data = false;
 783                             }
 784                         },
 785                         Ok(pkt) => {
 786                             let streamno = pkt.get_stream().get_id();
 787                             if self.has_video && streamno == self.video_str {
 788                                 debug_log!(self; {"  sending video packet"});
 789                                 self.vcontrol.try_send_video(PktSendEvent::Packet(pkt));
 790                                 if self.vcontrol.is_filled(FRAME_QUEUE_LEN) {
 791                                     try_send = false;
 792                                 }
 793                             } else if self.has_audio && streamno == self.audio_str {
 794                                 debug_log!(self; {"  sending audio packet"});
 795                                 self.acontrol.try_send_audio(PktSendEvent::Packet(pkt));
 796                                 if self.acontrol.get_queue_size() >= FRAME_QUEUE_LEN {
 797                                     try_send = false;
 798                                 }
 799                             }
 800                         }
 801                     };
 802                 }
 803                 self.vcontrol.fill(&mut disp_q);
 804                 let mut sleep_time = 25;
 805                 debug_log!(self; {format!(" time {}", self.tkeep.get_cur_time())});
 806                 if self.has_video {
 807                     debug_log!(self; {format!("  disp queue {}-{}, {}-{} vqueue fill {}", disp_q.first_ts, disp_q.last_ts, disp_q.start, disp_q.end, self.vcontrol.get_queue_size())});
 808                     let ret = try_display(&mut disp_q, &mut canvas, &mut self.osd, &self.tkeep);
 809                     if let Some(next_time) = ret {
 810                         sleep_time = sleep_time.min(next_time);
 811                     }
 812                 }
 813                 if self.has_audio {
 814                     let time_left = self.acontrol.get_time_left();
 815                     debug_log!(self; {format!("  audio left {}", time_left)});
 816                     sleep_time = sleep_time.min(time_left);
 817                 }
 818                 debug_log!(self; {format!("  sleep {}ms", sleep_time)});
 819                 if last_disp.elapsed().as_millis() >= 10 {
 820                     let c_time = self.tkeep.get_cur_time();
 821
 822                     if !self.debug {
 823                         print!(" {}  {}% \r", format_time(c_time), self.acontrol.get_volume());
 824                     } else {
 825                         print!(" {}  {}  {}% {:3} {:6}\r", format_time(c_time), if self.vcontrol.is_yuv() { 'Y' } else { 'R' }, self.acontrol.get_volume(), (disp_q.end + disp_q.len - disp_q.start) % disp_q.len, self.acontrol.get_fill());
 826                     }
 827                     std::io::stdout().flush().unwrap();
 828                     last_disp = Instant::now();
 829                 }
 830                 let mut end = true;
 831                 if self.has_video && !self.vcontrol.is_video_end() {
 832                     end = false;
 833                 }
 834                 if self.has_audio && !self.acontrol.is_audio_end() {
 835                     end = false;
 836                 }
 837                 if end {
 838                     break;
 839                 }
 840                 thread::sleep(Duration::from_millis(sleep_time));
 841             } else {
 842                 thread::sleep(Duration::from_millis(20));
 843             }
 844         }
 845         let (xpos, ypos) = canvas.into_window().position();
 846         self.xpos = Some(xpos);
 847         self.ypos = Some(ypos);
 848         println!();
 849         std::mem::swap(&mut self.vcontrol, &mut new_vcontrol);
 850         new_vcontrol.finish();
 851         std::mem::swap(&mut self.acontrol, &mut new_acontrol);
 852         new_acontrol.finish();
 853     }
 854 }
 855
 856 fn main() {
 857     let args: Vec<String> = env::args().collect();
 858
 859     if args.len() == 1 {
 860         println!("usage: nihav-player file1 file2 ...");
 861         return;
 862     }
 863
 864     let mut player = Player::new();
 865
 866     let mut aiter = args.iter().skip(1);
 867     let mut seek_time = NATimePoint::None;
 868     while let Some(arg) = aiter.next() {
 869         match arg.as_str() {
 870             "-an" => { player.play_audio = false; },
 871             "-ae" => { player.play_audio = true; },
 872             "-vn" => { player.play_video = false; },
 873             "-ve" => { player.play_video = true; },
 874             "-seek" => {
 875                 if let Some(arg) = aiter.next() {
 876                     if let Ok(time) = arg.parse::<NATimePoint>() {
 877                         seek_time = time;
 878                     } else {
 879                         println!("wrong seek time");
 880                         seek_time = NATimePoint::None;
 881                     }
 882                 }
 883             },
 884             "-vol" => {
 885                 if let Some(arg) = aiter.next() {
 886                     if let Ok(vol) = arg.parse::<usize>() {
 887                         player.volume = vol.min(MAX_VOLUME);
 888                     } else {
 889                         println!("wrong volume");
 890                     }
 891                 }
 892             },
 893             "-debug" => {
 894                 player.debug = true;
 895             },
 896             "-nodebug" => {
 897                 player.debug = false;
 898             },
 899             "-mt" => {
 900                 player.use_mt = true;
 901             },
 902             "-nomt" => {
 903                 player.use_mt = false;
 904             },
 905             "-threads" => {
 906                 if let Some(arg) = aiter.next() {
 907                     if let Ok(val) = arg.parse::<usize>() {
 908                         player.vthreads = val.max(1);
 909                     } else {
 910                         println!("wrong number of threads");
 911                     }
 912                 }
 913             },
 914             _ => {
 915                 player.play(arg, seek_time);
 916                 if player.end { break; }
 917                 seek_time = NATimePoint::None;
 918             },
 919         };
 920     }
 921 }