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+/* -*- 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");
+}