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, ..} = event {
 477                 match mouse_btn {
 478                     MouseButton::Right => self.toggle_pause(),
 479                     MouseButton::Middle => self.osd.toggle(),
 480                     _ => {},
 481                 };
 482             }
 483             if let Event::KeyDown {keycode: Some(keycode), keymod, ..} = event {
 484                 match keycode {
 485                     Keycode::Escape => {
 486                         self.end = true;
 487                         println!();
 488                         return Ok(true);
 489                     },
 490                     Keycode::Q if matches!(keymod, Mod::RSHIFTMOD | Mod::LSHIFTMOD) => {
 491                         self.end = true;
 492                         println!();
 493                         return Ok(true);
 494                     },
 495                     Keycode::Return => return Ok(true),
 496                     Keycode::Right      => { self.seek(10, true,  dmx, disp_queue)?; },
 497                     Keycode::Left       => { self.seek(10, false, dmx, disp_queue)?; },
 498                     Keycode::Up         => { self.seek(60, true,  dmx, disp_queue)?; },
 499                     Keycode::Down       => { self.seek(60, false, dmx, disp_queue)?; },
 500                     Keycode::PageUp     => { self.seek(600, true,  dmx, disp_queue)?; },
 501                     Keycode::PageDown   => { self.seek(600, false, dmx, disp_queue)?; },
 502                     Keycode::Space => { self.toggle_pause(); },
 503                     Keycode::Plus | Keycode::KpPlus => {
 504                         self.volume = (self.volume + 10).min(MAX_VOLUME);
 505                         if !self.mute {
 506                             self.acontrol.set_volume(self.volume);
 507                         }
 508                     },
 509                     Keycode::Minus | Keycode::KpMinus => {
 510                         self.volume = self.volume.saturating_sub(10);
 511                         if !self.mute {
 512                             self.acontrol.set_volume(self.volume);
 513                         }
 514                     },
 515                     Keycode::D => {
 516                         self.debug = !self.debug;
 517                     },
 518                     Keycode::M => {
 519                         self.mute = !self.mute;
 520                         if self.mute {
 521                             self.acontrol.set_volume(0);
 522                         } else {
 523                             self.acontrol.set_volume(self.volume);
 524                         }
 525                     },
 526                     Keycode::H => {
 527                         self.vcontrol.try_send_video(PktSendEvent::HurryUp);
 528                     },
 529                     Keycode::O => {
 530                         self.osd.toggle();
 531                     },
 532                     _ => {},
 533                 };
 534                 if !self.paused {
 535                     print!("{:60}\r", ' ');
 536                     std::io::stdout().flush().unwrap();
 537                 }
 538             }
 539         }
 540         Ok(false)
 541     }
 542     fn play(&mut self, name: &str, start_time: NATimePoint) {
 543         debug_log!(self; {format!("Playing {}", name)});
 544
 545         // prepare data source
 546         let path = Path::new(name);
 547         let mut file = if let Ok(handle) = File::open(path) {
 548                 handle
 549             } else {
 550                 println!("failed to open {}", name);
 551                 return;
 552             };
 553         let dmx_fact;
 554         let mut fr = FileReader::new_read(&mut file);
 555         let mut br = ByteReader::new(&mut fr);
 556         let res = detect::detect_format(name, &mut br);
 557         if res.is_none() {
 558             println!("cannot detect format for {}", name);
 559             return;
 560         }
 561         let (dmx_name, _score) = res.unwrap();
 562         debug_log!(self; {format!(" found demuxer {} with score {:?}", dmx_name, _score)});
 563         println!("trying demuxer {} on {}", dmx_name, name);
 564
 565         let mut dmx_reg = RegisteredDemuxers::new();
 566         nihav_register_all_demuxers(&mut dmx_reg);
 567         let mut dec_reg = RegisteredDecoders::new();
 568         nihav_register_all_decoders(&mut dec_reg);
 569         let mut mtdec_reg = RegisteredMTDecoders::new();
 570         if self.use_mt {
 571             nihav_register_all_mt_decoders(&mut mtdec_reg);
 572         }
 573
 574         let ret = dmx_reg.find_demuxer(dmx_name);
 575         if ret.is_none() {
 576             println!("error finding {} demuxer", dmx_name);
 577             return;
 578         }
 579         dmx_fact = ret.unwrap();
 580         br.seek(SeekFrom::Start(0)).expect("should be able to seek to the start");
 581         let ret = create_demuxer(dmx_fact, &mut br);
 582         if ret.is_err() {
 583             println!("error creating demuxer");
 584             return;
 585         }
 586         let mut dmx = ret.unwrap();
 587         if start_time != NATimePoint::None {
 588             debug_log!(self; {format!(" start seek to {}", start_time)});
 589             if dmx.seek(start_time).is_err() {
 590                 println!("initial seek failed");
 591             }
 592         }
 593
 594         let mut width = 640;
 595         let mut height = 480;
 596         let mut tb_num = 0;
 597         let mut tb_den = 0;
 598         let mut ainfo: Option<NAAudioInfo> = None;
 599
 600         let mut video_dec: Option<DecoderStuff> = None;
 601         let mut audio_dec: Option<DecoderStuff> = None;
 602
 603         let duration = dmx.get_duration();
 604         if duration != 0 {
 605             println!(" total duration {}", format_time(duration));
 606         }
 607         self.has_video = false;
 608         self.has_audio = false;
 609         self.osd.reset();
 610         self.osd.set_duration(duration);
 611         for i in 0..dmx.get_num_streams() {
 612             let s = dmx.get_stream(i).unwrap();
 613             let info = s.get_info();
 614             let decfunc = dec_reg.find_decoder(info.get_name());
 615             let decfunc_mt = mtdec_reg.find_decoder(info.get_name());
 616             println!("stream {} - {} {}", i, s, info.get_name());
 617             debug_log!(self; {format!(" stream {} - {} {}", i, s, info.get_name())});
 618             let str_id = s.get_id();
 619             if info.is_video() {
 620                 if video_dec.is_none() && self.play_video {
 621                     if let Some(decfunc) = decfunc_mt {
 622                         let mut dec = (decfunc)();
 623                         let mut dsupp = Box::new(NADecoderSupport::new());
 624                         let props = info.get_properties().get_video_info().unwrap();
 625                         if props.get_width() != 0 {
 626                             width  = props.get_width();
 627                             height = props.get_height();
 628                         }
 629                         if dec.init(&mut dsupp, info.clone(), self.vthreads).is_ok() {
 630                             video_dec = Some(DecoderStuff{ dsupp, dec: DecoderType::VideoMT(dec, MTFrameReorderer::new()) });
 631                             self.video_str = str_id;
 632                             let (tbn, tbd) = s.get_timebase();
 633                             tb_num = tbn;
 634                             tb_den = tbd;
 635                             self.has_video = true;
 636                             continue;
 637                         } else {
 638                             println!("failed to create multi-threaded decoder, falling back");
 639                         }
 640                     }
 641                     if let Some(decfunc) = decfunc {
 642                         let mut dec = (decfunc)();
 643                         let mut dsupp = Box::new(NADecoderSupport::new());
 644                         let props = info.get_properties().get_video_info().unwrap();
 645                         if props.get_width() != 0 {
 646                             width  = props.get_width();
 647                             height = props.get_height();
 648                         }
 649                         let desc = get_codec_description(info.get_name());
 650                         let (reorder_depth, reord) = if desc.is_none() || (desc.unwrap().caps & CODEC_CAP_COMPLEX_REORDER) == 0 {
 651                                 let reord: Box<dyn FrameReorderer + Send> = Box::new(IPBReorderer::new());
 652                                 (3, reord)
 653                             } else {
 654                                 let reord: Box<dyn FrameReorderer + Send> = Box::new(ComplexReorderer::new());
 655                                 (16, reord)
 656                             };
 657                         dsupp.pool_u8 = NAVideoBufferPool::new(reorder_depth);
 658                         dsupp.pool_u16 = NAVideoBufferPool::new(reorder_depth);
 659                         dsupp.pool_u32 = NAVideoBufferPool::new(reorder_depth);
 660                         if dec.init(&mut dsupp, info).is_err() {
 661                             println!("failed to initialise video decoder");
 662                             return;
 663                         }
 664                         video_dec = Some(DecoderStuff{ dsupp, dec: DecoderType::Video(dec, reord) });
 665                         self.video_str = str_id;
 666                         let (tbn, tbd) = s.get_timebase();
 667                         tb_num = tbn;
 668                         tb_den = tbd;
 669                         self.has_video = true;
 670                     } else {
 671                         println!("no video decoder for {} found!", info.get_name());
 672                     }
 673                 }
 674             } else if info.is_audio() {
 675                 if audio_dec.is_none() && self.play_audio {
 676                     if let Some(decfunc) = decfunc {
 677                         let mut dec = (decfunc)();
 678                         let mut dsupp = Box::new(NADecoderSupport::new());
 679                         ainfo = info.get_properties().get_audio_info();
 680                         if dec.init(&mut dsupp, info).is_err() {
 681                             println!("failed to initialise audio decoder");
 682                             return;
 683                         }
 684                         audio_dec = Some(DecoderStuff{ dsupp, dec: DecoderType::Audio(dec) });
 685                         self.audio_str = str_id;
 686                         self.has_audio = true;
 687                     } else {
 688                         println!("no audio decoder for {} found!", info.get_name());
 689                     }
 690                 }
 691             } else {
 692                 println!("decoder {} not found", info.get_name());
 693             }
 694         }
 695         if !self.has_video && !self.has_audio {
 696             println!("No playable streams found.");
 697             return;
 698         }
 699
 700         while (width <= 384) && (height <= 288) {
 701             width <<= 1;
 702             height <<= 1;
 703         }
 704
 705         // prepare playback structure
 706         let mut new_vcontrol = VideoControl::new(video_dec, width, height, tb_num, tb_den);
 707         std::mem::swap(&mut self.vcontrol, &mut new_vcontrol);
 708
 709         let mut new_acontrol = AudioControl::new(audio_dec, ainfo, &self.asystem);
 710         std::mem::swap(&mut self.acontrol, &mut new_acontrol);
 711
 712         if self.mute {
 713             self.acontrol.set_volume(0);
 714         } else {
 715             self.acontrol.set_volume(self.volume);
 716         }
 717
 718         let fname = path.file_name();
 719         let wname = if let Some(fname) = fname {
 720                 "NihAV player - ".to_owned() + fname.to_str().expect("should be able to set window title")
 721             } else {
 722                 "NihAV player".to_owned()
 723             };
 724         let mut builder = self.vsystem.window(&wname, width as u32, height as u32);
 725         let window = if let (Some(xpos), Some(ypos)) = (self.xpos, self.ypos) {
 726                 builder.position(xpos, ypos).build().expect("should be able to set window position")
 727             } else {
 728                 builder.position_centered().build().expect("should be able to centre window")
 729             };
 730         let mut canvas = window.into_canvas().build().expect("should be able to build canvas");
 731         let texture_creator = canvas.texture_creator();
 732         let mut disp_q = DispQueue::new(&texture_creator, width, height, if self.has_video { FRAME_QUEUE_LEN } else { 0 });
 733         if !self.has_video {
 734             canvas.clear();
 735             canvas.copy(disp_q.get_last_texture(&self.osd), None, None).expect("blit failure");
 736             canvas.present();
 737         }
 738
 739         self.has_audio = self.acontrol.has_audio();
 740         if !self.has_video && !self.has_audio {
 741             println!("No playable streams.");
 742             return;
 743         }
 744
 745         // play
 746         if self.prefill(&mut dmx, &mut disp_q).is_err() {
 747             std::mem::swap(&mut self.vcontrol, &mut new_vcontrol);
 748             new_vcontrol.finish();
 749             std::mem::swap(&mut self.acontrol, &mut new_acontrol);
 750             new_acontrol.finish();
 751             return;
 752         }
 753         self.tkeep.reset_all(if !disp_q.is_empty() { disp_q.first_ts } else { 0 });
 754         if !self.paused {
 755             self.acontrol.resume();
 756         }
 757         let mut event_pump = self.sdl_context.event_pump().expect("should be able to create event pump");
 758         let mut last_disp = Instant::now();
 759         let mut has_data = true;
 760         'main: loop {
 761             let ret = self.handle_events(&mut event_pump, &mut canvas, &mut dmx, &mut disp_q);
 762             if matches!(ret, Ok(true) | Err(_)) {
 763                 println!();
 764                 break 'main;
 765             }
 766             if !self.paused {
 767                 let mut try_send = self.acontrol.get_queue_size() < FRAME_QUEUE_LEN && self.vcontrol.get_queue_size() < FRAME_QUEUE_LEN;
 768                 if !self.vcontrol.try_send_queued() && self.vcontrol.is_filled(FRAME_QUEUE_LEN) {
 769                     try_send = false;
 770                 }
 771                 if !self.acontrol.try_send_queued() {
 772                     try_send = false;
 773                 }
 774                 while has_data && try_send {
 775                     match dmx.get_frame() {
 776                         Err(DemuxerError::EOF) => {
 777                             self.vcontrol.try_send_video(PktSendEvent::End);
 778                             self.acontrol.try_send_audio(PktSendEvent::End);
 779                             has_data = false;
 780                         },
 781                         Err(err) => {
 782                             println!("demuxer error {:?}", err);
 783                             if err == DemuxerError::IOError {
 784                                 self.vcontrol.try_send_video(PktSendEvent::End);
 785                                 self.acontrol.try_send_audio(PktSendEvent::End);
 786                                 has_data = false;
 787                             }
 788                         },
 789                         Ok(pkt) => {
 790                             let streamno = pkt.get_stream().get_id();
 791                             if self.has_video && streamno == self.video_str {
 792                                 debug_log!(self; {"  sending video packet"});
 793                                 self.vcontrol.try_send_video(PktSendEvent::Packet(pkt));
 794                                 if self.vcontrol.is_filled(FRAME_QUEUE_LEN) {
 795                                     try_send = false;
 796                                 }
 797                             } else if self.has_audio && streamno == self.audio_str {
 798                                 debug_log!(self; {"  sending audio packet"});
 799                                 self.acontrol.try_send_audio(PktSendEvent::Packet(pkt));
 800                                 if self.acontrol.get_queue_size() >= FRAME_QUEUE_LEN {
 801                                     try_send = false;
 802                                 }
 803                             }
 804                         }
 805                     };
 806                 }
 807                 self.vcontrol.fill(&mut disp_q);
 808                 let mut sleep_time = 25;
 809                 debug_log!(self; {format!(" time {}", self.tkeep.get_cur_time())});
 810                 if self.has_video {
 811                     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())});
 812                     let ret = try_display(&mut disp_q, &mut canvas, &mut self.osd, &self.tkeep);
 813                     if let Some(next_time) = ret {
 814                         sleep_time = sleep_time.min(next_time);
 815                     }
 816                 }
 817                 if self.has_audio {
 818                     let time_left = self.acontrol.get_time_left();
 819                     debug_log!(self; {format!("  audio left {}", time_left)});
 820                     sleep_time = sleep_time.min(time_left);
 821                 }
 822                 debug_log!(self; {format!("  sleep {}ms", sleep_time)});
 823                 if last_disp.elapsed().as_millis() >= 10 {
 824                     let c_time = self.tkeep.get_cur_time();
 825
 826                     if !self.debug {
 827                         print!(" {}  {}% \r", format_time(c_time), self.acontrol.get_volume());
 828                     } else {
 829                         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());
 830                     }
 831                     std::io::stdout().flush().unwrap();
 832                     last_disp = Instant::now();
 833                 }
 834                 let mut end = true;
 835                 if self.has_video && !self.vcontrol.is_video_end() {
 836                     end = false;
 837                 }
 838                 if self.has_audio && !self.acontrol.is_audio_end() {
 839                     end = false;
 840                 }
 841                 if end {
 842                     break;
 843                 }
 844                 thread::sleep(Duration::from_millis(sleep_time));
 845             } else {
 846                 thread::sleep(Duration::from_millis(20));
 847             }
 848         }
 849         let (xpos, ypos) = canvas.into_window().position();
 850         self.xpos = Some(xpos);
 851         self.ypos = Some(ypos);
 852         println!();
 853         std::mem::swap(&mut self.vcontrol, &mut new_vcontrol);
 854         new_vcontrol.finish();
 855         std::mem::swap(&mut self.acontrol, &mut new_acontrol);
 856         new_acontrol.finish();
 857     }
 858 }
 859
 860 fn main() {
 861     let args: Vec<String> = env::args().collect();
 862
 863     if args.len() == 1 {
 864         println!("usage: nihav-player file1 file2 ...");
 865         return;
 866     }
 867
 868     let mut player = Player::new();
 869
 870     let mut aiter = args.iter().skip(1);
 871     let mut seek_time = NATimePoint::None;
 872     while let Some(arg) = aiter.next() {
 873         match arg.as_str() {
 874             "-an" => { player.play_audio = false; },
 875             "-ae" => { player.play_audio = true; },
 876             "-vn" => { player.play_video = false; },
 877             "-ve" => { player.play_video = true; },
 878             "-seek" => {
 879                 if let Some(arg) = aiter.next() {
 880                     if let Ok(time) = arg.parse::<NATimePoint>() {
 881                         seek_time = time;
 882                     } else {
 883                         println!("wrong seek time");
 884                         seek_time = NATimePoint::None;
 885                     }
 886                 }
 887             },
 888             "-vol" => {
 889                 if let Some(arg) = aiter.next() {
 890                     if let Ok(vol) = arg.parse::<usize>() {
 891                         player.volume = vol.min(MAX_VOLUME);
 892                     } else {
 893                         println!("wrong volume");
 894                     }
 895                 }
 896             },
 897             "-debug" => {
 898                 player.debug = true;
 899             },
 900             "-nodebug" => {
 901                 player.debug = false;
 902             },
 903             "-mt" => {
 904                 player.use_mt = true;
 905             },
 906             "-nomt" => {
 907                 player.use_mt = false;
 908             },
 909             "-threads" => {
 910                 if let Some(arg) = aiter.next() {
 911                     if let Ok(val) = arg.parse::<usize>() {
 912                         player.vthreads = val.max(1);
 913                     } else {
 914                         println!("wrong number of threads");
 915                     }
 916                 }
 917             },
 918             _ => {
 919                 player.play(arg, seek_time);
 920                 if player.end { break; }
 921                 seek_time = NATimePoint::None;
 922             },
 923         };
 924     }
 925 }