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/* -*- 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 1.11 2005/06/14 18:58:35 deva
* *** empty log message ***
*
* 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;
info->info("MovEncoderThread");
outputqueue = new FramePriorityQueue();
inputqueue = new FrameVectorQueue();
block = new FrameVector();
num_frames_in_block = config->readString("frame_sequence")->length();
info->info("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()
{
info->info("~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->info("MovEncoderThread::encode - NULL frame detected.");
// 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 ++;
}
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