src/decoder.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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
*/
#include <SDL/SDL.h>

#include "dv1394.h"
#include "dv.h"

#include "decoder.h"
#include "debug.h"

Decoder::Decoder(Error* err,
                 sem_t *gencode_sem,
                 sem_t *gplayer_sem,
                 Queue<Frame> *gencode_queue,
                 Queue<Frame> *gplayer_queue,
                 pthread_mutex_t *gmutex,
                 volatile int *grunning)
{
  errobj = err;
  encode_sem = gencode_sem;
  player_sem = gplayer_sem;
  encode_queue = gencode_queue;
  player_queue = gplayer_queue;
  mutex = gmutex;
  running = grunning;
}

Decoder::~Decoder()
{
}

void Decoder::decode()
{
  dv1394 dv_stream = dv1394(errobj); // Use default port and channel.

  while(*running) {
    uint8_t *ptr;
    int len;
    SDL_Event user_event;
    
    // Read a dvframe
    ptr = dv_stream.readFrame();
    if(!ptr) return; // No frame read. (Due to firewire error)
    Frame *eframe = new Frame(ptr, DVPACKAGE_SIZE);
    Frame *pframe = new Frame(ptr, DVPACKAGE_SIZE);
    free(ptr);

    encode_queue->push(eframe);
    player_queue->push(pframe);
    
    sem_post(encode_sem);
    
    // Create and send SDL event.
    user_event.type = SDL_USEREVENT;
    user_event.user.code = 0;
    user_event.user.data1 = NULL;
    user_event.user.data2 = NULL;
    SDL_PushEvent(&user_event);
  }

  // Kick the others so they wake up with empty queues
  sem_post(encode_sem);
}

void Decoder::run() {
  decode();
  fprintf(stderr, "Decoder thread stopped.\n"); fflush(stderr);
}

#endif /*USE_GUI*/