summaryrefslogtreecommitdiff
path: root/src/decoder.cc
blob: 4707c9068f46da8f46836b7f45e33145436c59e2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
/* -*- 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
 */
/*
 * $Id$
 */
/*
 * $Log$
 * Revision 1.22  2005/05/02 09:50:22  deva
 * Rewrote freeze, shoot and record flags, from encoder to frame.
 *
 * Revision 1.21  2005/05/01 09:56:26  deva
 * Added Id and Log tags to all files
 *
 */
#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;
  b_record = false; // Initially no recording is done.
}

Decoder::~Decoder()
{
}

void Decoder::decode()
{
  bool local_shoot;
  bool local_freeze;
  bool local_record;

  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)

    local_shoot = b_shoot;
    b_shoot = false;
    local_freeze = b_freeze;
    b_freeze = false;
    local_record = b_record;

    Frame *eframe = new Frame(ptr, DVPACKAGE_SIZE);
    eframe->shoot = local_shoot;
    eframe->freeze = local_freeze;
    eframe->record = local_record;
    
    Frame *pframe = new Frame(ptr, DVPACKAGE_SIZE);
    pframe->shoot = local_shoot;
    pframe->freeze = local_freeze;
    pframe->record = local_record;

    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);
}

/*
 * Set freeze bit on current frame.
 */
void Decoder::freeze()
{  
  b_freeze = true;
}


/*
 * Set shoot bit on current frame.
 */
void Decoder::shoot(unsigned char *rgb)
{
  b_shoot = true;
}

/*
 * Set the record bit to true in all following frames.
 */
void Decoder::start()
{
  b_record = true;
}

/*
 * Set the record bit to false in all following frames.
 */
void Decoder::stop(n_savestate save)
{
  b_record = false;
}


#endif /*USE_GUI*/