Added multithreaded encoding support.

1 files changed, 117 insertions, 0 deletions

diff --git a/src/mov_encoder_writer.cc b/src/mov_encoder_writer.cc
new file mode 100644
index 0000000..941ef85
--- /dev/null
+++ b/src/mov_encoder_writer.cc
@@ -0,0 +1,117 @@
+/* -*- 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 1.1  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* filename, FramePriorityQueue *q, sem_t *s, pthread_mutex_t *m)
+{
+  file = open(filename, 
+              O_CREAT | O_WRONLY, //| 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;
+}
+
+MovEncoderWriter::~MovEncoderWriter()
+{
+  if(file != -1) close(file);
+}
+
+void MovEncoderWriter::run()
+{
+  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) {
+
+      write(file, frame->data, frame->size);
+      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);
+    
+    }
+  }
+}