src/player.cc


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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
 * RTVideoRec Realtime video recoder and encoder for Linux
 *
 * Copyright (C) 2004  Bent Bisballe
 * Copyright (C) 2004  B. Stultiens
 * Copyright (C) 2004  Koen Otter and Glenn van der Meyden
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <config.h>
#ifdef USE_GUI

#include "player.h"

Player::Player(volatile int *grunning,
               sem_t	*gsem,
               Queue<FFFrame> *gqueue,
               pthread_mutex_t *gmutex)
{
  running = grunning;
  sem = gsem;
  queue = gqueue;
  mutex = gmutex;

 	sem_init(&play_sem, 0, 1);

  if(SDL_Init(SDL_INIT_VIDEO) < 0) {
    fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
    exit(1);
  }
  screen = SDL_SetVideoMode(DISPLAYWIDTH, 
			    DISPLAYHEIGHT, 
			    16, 
			    SDL_HWSURFACE|SDL_ANYFORMAT|SDL_HWACCEL);
  if(!screen) {
    fprintf(stderr, "Unable to set %dx%d video: %s\n", 
	    DISPLAYWIDTH, DISPLAYHEIGHT, SDL_GetError());
    exit(1);
  }

  overlay = SDL_CreateYUVOverlay(DISPLAYWIDTH, DISPLAYHEIGHT, SDL_IYUV_OVERLAY, screen);
}

Player::~Player()
{
  if(overlay)
    SDL_FreeYUVOverlay(overlay);
  SDL_Quit();
}

void Player::player()
{
  SDL_Event event;
  SDL_Rect rect;
  FFFrame *f;
  AVPicture pict;
  int i;
  struct timespec ts;

  //  rect.x = 20;
  //  rect.y = 182;
  rect.x = 0;
  rect.y = 0;
  rect.w = DISPLAYWIDTH;
  rect.h = DISPLAYHEIGHT;

  //+++++Reference to the overlay pixels/pitches, only after creating a new overlay+++++
  for(i = 0; i < 3; i++) {
    pict.data[i] = overlay->pixels[i];
    pict.linesize[i] = overlay->pitches[i];
  }
  
  while(*running) {
    // Wait for the semaphore to be free... then run
    sem_wait(&play_sem);
    sem_post(&play_sem);

    if(!SDL_WaitEvent(&event)) break; // FIXME: Gracefull exit... 

    switch(event.type) {
    case SDL_KEYDOWN:
      switch(event.key.keysym.sym) {
      case SDLK_q:
      case SDLK_ESCAPE:
        goto quitit;
      default:
        break;
      }
      break;
      
    case SDL_USEREVENT:
      pthread_mutex_lock(mutex);
      f = queue->pop();
      pthread_mutex_unlock(mutex);
      if(!f) break;
      
      img_convert(&pict, PIX_FMT_YUV420P, (AVPicture *)f->frame, 
                  PIX_FMT_YUV420P, DISPLAYWIDTH, DISPLAYHEIGHT);
      
      SDL_LockYUVOverlay(overlay);	
      overlay->pixels = pict.data;
      SDL_UnlockYUVOverlay(overlay);
      SDL_DisplayYUVOverlay(overlay, &rect);
      break;
      
    case SDL_QUIT:
    quitit:
      *running = 0;
      break;

    default:
      break;
    }
  }
  /* Remove any late buffer */
  /* We don't care, the encoder finishes them all */
  ts.tv_sec = 0;
  ts.tv_nsec = 100000000L;	// 100ms
  nanosleep(&ts, NULL);

  pthread_mutex_lock(mutex);
  f = queue->pop();
  pthread_mutex_unlock(mutex);
  if(f) delete f;
}

void Player::run()
{
  player();
}

void Player::start()
{
  sem_post(&play_sem);
}

void Player::stop()
{
  sem_wait(&play_sem);
}

#endif /* USE_GUI */