From 48b768db44cb9e00adfead71b973074685cec417 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 20 Sep 2005 19:39:49 +0000
Subject: *** empty log message ***

---
 src/audio_encoder.cc | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 src/audio_encoder.cc

(limited to 'src/audio_encoder.cc')

diff --git a/src/audio_encoder.cc b/src/audio_encoder.cc
new file mode 100644
index 0000000..6bebe0c
--- /dev/null
+++ b/src/audio_encoder.cc
@@ -0,0 +1,127 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            audio_encoder.cc
+ *
+ *  Sat Sep 17 18:38:45 CEST 2005
+ *  Copyright  2005 Bent Bisballe Nyeng
+ *  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.
+ */
+#include "config.h"
+#include "audio_encoder.h"
+#include "util.h"
+
+AudioEncoder::AudioEncoder(FramePriorityQueue *in, pthread_mutex_t *in_mutex, sem_t *in_sem,
+                           FramePriorityQueue *out, pthread_mutex_t *out_mutex, sem_t *out_sem,
+                           Info *i)
+{
+  info = i;
+  info->info("AudioEncoder");
+
+  running = true;
+
+  // Queues
+  inputqueue = in;
+  outputqueue = out;
+
+  // Queue mutexes
+  input_mutex = in_mutex;
+  output_mutex = out_mutex;
+
+  input_sem = in_sem;
+  output_sem = out_sem;
+
+  frame_number = 0;
+}
+
+AudioEncoder::~AudioEncoder()
+{
+}
+
+void AudioEncoder::thread_main()
+{
+  info->info("AudioEncoder::run");
+
+  unsigned int queuesize = 0;
+
+  // Run with slightly lower priority than MovEncoderWriter
+  nice(2);
+
+  Frame *in_frame = NULL;
+  Frame *out_frame = NULL;
+  Frame *tmpframe;
+
+  LibLAMEWrapper lame(info);
+
+  while(running) {
+    sem_wait(input_sem);
+
+    // If no frame is in the buffer, get one from the queue
+    while( in_frame == NULL ) {
+
+      //      sem_wait(input_sem); 
+
+      // Lock output mutex
+      pthread_mutex_lock( input_mutex );
+      tmpframe = inputqueue->top();
+
+      if(tmpframe && tmpframe->number == frame_number) {
+        inputqueue->pop();
+        queuesize = inputqueue->size();
+        in_frame = tmpframe;
+        frame_number++;
+      }
+
+      pthread_mutex_unlock( input_mutex );
+      // Unlock output mutex
+
+      sleep_1_frame();
+    }
+    
+    // Check for end of stream
+    if(in_frame->endOfFrameStream == true) {
+      info->info("endOfFrameStream in AudioEncoder");
+      running = false;
+      out_frame = lame.close();
+    } else {
+      // Encode audio
+      out_frame = lame.encode(in_frame);
+    }
+    out_frame->number = in_frame->number;
+    out_frame->endOfFrameStream = in_frame->endOfFrameStream;
+
+    delete in_frame;
+    in_frame = NULL;
+
+    // Lock output mutex
+    pthread_mutex_lock(output_mutex);
+    outputqueue->push(out_frame);
+    pthread_mutex_unlock(output_mutex);
+    // Unlock output mutex
+    
+    // Kick multiplexer (audio)
+    sem_post(output_sem);
+  }
+
+  // Kick multiplexer (audio)
+  sem_post(output_sem);
+
+  info->info("AudioEncoder::stop");
+}
-- 
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