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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* mov_encoder_writer.cc
*
* Sun May 22 12:51:36 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 1.2 2005/05/26 12:48:36 deva
* *** empty log message ***
*
* Revision 1.1 2005/05/22 15:49:22 deva
* Added multithreaded encoding support.
*
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <pthread.h>
#include <semaphore.h>
#include <errno.h>
#include <config.h>
#include "mov_encoder_writer.h"
MovEncoderWriter::MovEncoderWriter(const char* fname, FramePriorityQueue *q, sem_t *s, pthread_mutex_t *m)
{
// Append suffix
char f[256];
sprintf(f, "%s.mpg", fname);
filename = string(fname);
file = open(f,
O_CREAT | O_WRONLY | O_SYNC, //| O_LARGEFILE
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if(file == -1) {
fprintf(stderr, "Could not open file for writing: %s\n", strerror(errno));
return;
}
sem = s;
queue = q;
frame_number = 0;
mutex = m;
running = true;
sequence_number = 0;
}
MovEncoderWriter::~MovEncoderWriter()
{
if(file != -1) close(file);
}
//#define TEST_BIG_FILE 10*1024*1024
void MovEncoderWriter::run()
{
#ifdef TEST_BIG_FILE
char big_buf[TEST_BIG_FILE];
#endif/* TEST_BIG_FILE*/
// fprintf(stderr, "\t\t\t\t\t\t\t\t\tFile Writer ready!\n"); fflush(stderr);
Frame *frame;
if(file == -1) return;
while(running) {
sem_wait(sem);
if(queue->size() == 0) continue;
pthread_mutex_lock(mutex);
frame = queue->top();
if(frame->number == frame_number) queue->pop();
pthread_mutex_unlock(mutex);
/*
if(!frame) {
fprintf(stderr, "\t\t\t\t\t\t\t\t\tNULL frame detected");
continue;
}
*/
// fprintf(stderr, "\t\t\t\t\t\t\t\t\tChecking frame [%d] against expected [%d]\n",
// frame->number, frame_number); fflush(stderr);
while(frame->number == frame_number) {
int ret;
#ifdef TEST_BIG_FILE
ret = write(file, big_buf, TEST_BIG_FILE);
#else /* TEST_BIG_FILE */
ret = write(file, frame->data, frame->size);
#endif /* TEST_BIG_FILE */
if(ret == -1) {
fprintf(stderr, "Error in filewriter\n"); fflush(stderr);
switch(errno) {
case EAGAIN: // Non-blocking I/O has been selected using O_NONBLOCK and the write would block.
case EBADF: // fd is not a valid file descriptor or is not open for writing.
case EFAULT: // buf is outside your accessible address space.
case EINTR: // The call was interrupted by a signal before any data was written.
case EINVAL: // fd is attached to an object which is unsuitable for writing.
case EIO: // A low-level I/O error occurred while modifying the inode.
case ENOSPC: // The device containing the file referred to by fd has no room for the data.
case EPIPE: // fd is connected to a pipe or socket whose reading end is closed. When this hap-
// pens the writing process will also receive a SIGPIPE signal. (Thus, the write
// return value is seen only if the program catches, blocks or ignores this sig-
// nal.)
fprintf(stderr, "Could not write to file: %s\n", strerror(errno)); fflush(stderr);
return;
case EFBIG: // An attempt was made to write a file that exceeds the implementation-defined max-
// imum file size or the process' file size limit, or to write at a position past
// than the maximum allowed offset.
fprintf(stderr, "Attempting to write to a new file\n"); fflush(stderr);
// Close current file
if(file != -1) close(file);
{
sequence_number++;
// Create new filename
char f[256];
sprintf(f, "%s-%d.mpg", filename.c_str(), sequence_number);
// Open new file
file = open(f,
O_CREAT | O_WRONLY | O_SYNC, //| O_LARGEFILE
S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
if(file == -1) {
fprintf(stderr, "Could not open file for writing: %s\n", strerror(errno)); fflush(stderr);
return;
}
}
// Do write again.
#ifdef TEST_BIG_FILE
ret = write(file, big_buf, TEST_BIG_FILE);
#else /* TEST_BIG_FILE */
ret = write(file, frame->data, frame->size);
#endif /* TEST_BIG_FILE */
if(ret == -1) {
fprintf(stderr, "Could not write to file: %s\n", strerror(errno)); fflush(stderr);
return;
}
fprintf(stderr, "Success\n"); fflush(stderr);
break;
}
}
delete frame;
// fprintf(stderr, "\t\t\t\t\t\t\t\t\tWrite frame [%d]\n", frame->number); fflush(stderr);
frame_number++;
pthread_mutex_lock(mutex);
frame = queue->top();
if(frame->number == frame_number) queue->pop();
pthread_mutex_unlock(mutex);
}
}
}
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