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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* mov_encoder_thread.cc
*
* Tue May 17 16:00:01 CEST 2005
* Copyright 2005 Bent Bisballe
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of MIaV.
*
* MIaV 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.
*
* MIaV 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 MIaV; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
/*
* $Id$
*/
/*
* $Log$
* Revision 1.10 2005/06/14 12:29:40 deva
* Incorporated the use of the Info object everywhere... also using the log functionality.
*
* Revision 1.9 2005/05/26 12:48:36 deva
* *** empty log message ***
*
* Revision 1.8 2005/05/23 17:59:49 deva
* Fixed delete of NULL input queue
*
* Revision 1.7 2005/05/22 15:49:22 deva
* Added multithreaded encoding support.
*
* Revision 1.6 2005/05/19 14:10:22 deva
*
* Multithreading rulez?
*
* Revision 1.5 2005/05/19 10:55:49 deva
* Test for block encoding of length strlen("IPIPP").
*
* Revision 1.4 2005/05/17 19:16:26 deva
* Made new mpeg writer work, with proper file permissions.
*
* Revision 1.3 2005/05/17 15:13:15 deva
* *** empty log message ***
*
* Revision 1.2 2005/05/17 15:12:51 deva
* Fixed file rights (All read on files and directories, and all execute on directories).
*
* Revision 1.1 2005/05/17 14:30:56 deva
* Added code, preparing threaded encoding.
*/
#include <config.h>
#include "mov_encoder_thread.h"
#include <errno.h>
#include "miav_config.h"
MovEncoderThread::MovEncoderThread(const char *cpr, Info *i)
{
info = i;
outputqueue = new FramePriorityQueue();
inputqueue = new FrameVectorQueue();
block = new FrameVector();
num_frames_in_block = config->readString("frame_sequence")->length();
info->log("Frame sequence length %d", num_frames_in_block);
threads = config->readInt("encoding_threads");
// Thread stuff
sem_init(&in_sem, 0, 0);
sem_init(&out_sem, 0, 0);
sem_init(&read_sem, 0, 0);
for(int cnt = 0; cnt < threads; cnt++) sem_post(&read_sem);
pthread_mutex_init (&input_mutex, NULL);
pthread_mutex_init (&output_mutex, NULL);
writer = new MovEncoderWriter(cpr, outputqueue, &out_sem, &output_mutex, info);
writer_tid = new pthread_t;
pthread_create (writer_tid, NULL, thread_run, writer);
for(int cnt = 0; cnt < threads; cnt++) {
encs.push_back(new MovEncoder(&read_sem,
inputqueue, &in_sem, &input_mutex,
outputqueue, &out_sem, &output_mutex,
info));
tids.push_back(new pthread_t);
pthread_create (tids[cnt], NULL, thread_run, encs[cnt]);
}
current_frame = 0;
frame_number = 0;
}
MovEncoderThread::~MovEncoderThread()
{
// These should not be deleted here... its done elsewhere.
// inputqueue = NULL;
sem_post(&out_sem);
// Stop the encoding threads.
for(int cnt = 0; cnt < threads; cnt++) {
encs[cnt]->running = false;
}
// Kick them to initiate the exit.
for(int cnt = 0; cnt < threads; cnt++) {
sem_post(&in_sem);
}
// They should be exited now, so we can delete them.
for(int cnt = 0; cnt < threads; cnt++) {
pthread_join(*tids[cnt], NULL);
delete encs[cnt];
delete tids[cnt];
}
// Tell the writer to stop
writer->running = false;
// Kick it to make it stop.
sem_post(&out_sem);
// Destroy the thread
pthread_join(*writer_tid, NULL);
delete writer_tid;
// delete the writer (end thereby close the file)
delete writer;
// Destroy the semaphores.
sem_destroy(&in_sem);
sem_destroy(&out_sem);
sem_destroy(&read_sem);
}
void MovEncoderThread::encode(Frame* frame)
{
if(frame == NULL) {
info->log("NULL frame detected, exiting.");
// Terminate
return;
}
frame->number = frame_number;
block->push_back(frame);
// Switch frame
if(block->size() == num_frames_in_block) {
// Wait until a free encoder.
/*
int val;
sem_getvalue(&read_sem, &val);
fprintf(stderr, "Sem Value: %d\n", val); fflush(stderr);
*/
sem_wait(&read_sem);
// Lock input mutex
pthread_mutex_lock(&input_mutex);
inputqueue->push(block);
pthread_mutex_unlock(&input_mutex);
// Unlock input mutex
// fprintf(stderr, "Frame vector [%d-%d] pushed\n",
// block->at(0)->number,
// block->at(block->size() - 1)->number);
fflush(stderr);
// Kick encoders
sem_post(&in_sem);
// Start new block
current_frame = 0;
block = new FrameVector;
}
frame_number ++;
}
|
