1 files changed, 111 insertions, 0 deletions
diff --git a/src/audiobackend-alsa.cc b/src/audiobackend-alsa.cc
new file mode 100644
index 0000000..b4401ca
--- /dev/null
+++ b/src/audiobackend-alsa.cc
@@ -0,0 +1,111 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            audiobackend-alsa.cc
+ *
+ *  Wed Sep 24 07:47:43 CEST 2014
+ *  Copyright 2014 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of SimpleRTP.
+ *
+ *  SimpleRTP 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.
+ *
+ *  SimpleRTP 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 SimpleRTP; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "audiobackend-alsa.h"
+
+#include <memory.h>
+
+#include "mediaconfig.h"
+
+AudioBackendAlsa::AudioBackendAlsa(const char *device)
+{
+  //
+  // LibAO:
+  //
+  ao_initialize();
+
+  ao_sample_format sf;
+  memset(&sf, 0, sizeof(sf));
+  sf.bits = 16;
+  sf.rate = SAMPLERATE;
+  sf.channels = 1;
+  sf.byte_format = AO_FMT_NATIVE;
+
+  dev = ao_open_live(ao_default_driver_id(), &sf, 0);
+
+  //
+  // LibAudioIn:
+  //
+  int err;
+  ai = ai_init(&err, device, "", SAMPLERATE, 1);
+  if(ai == NULL || err) {
+    printf("ai_init: %d (device: %s)\n", err, device);
+    exit(1);
+    return;
+  }
+  
+  int srate = ai_get_samplerate(&err, ai);
+  if(err) printf("ai_get_samplerate: %d\n", err);
+  if(srate != SAMPLERATE) {
+    printf("Samplerate: %d\n", srate);
+  }
+}
+
+AudioBackendAlsa::~AudioBackendAlsa()
+{
+  //
+  // LibAO:
+  //
+  ao_close(dev);
+  ao_shutdown();
+
+  //
+  // LibAudioIn:
+  //
+  if(ai == NULL) {
+    printf("ai_err: no handle\n");
+    return;
+  }
+
+  int err;
+  ai_close(&err, ai);
+  if(err) printf("ai_err: %d\n", err);
+}
+
+int AudioBackendAlsa::read(char *pcm, size_t maxsize)
+{
+  //
+  // LibAudioIn:
+  //
+  if(ai == NULL) {
+    printf("ai_err: no handle\n");
+    return 0;
+  }
+
+  int err;
+  int ret = ai_read(&err, ai, pcm, maxsize);
+  if(err) printf("ai_read: %d\n", err);
+  return ret;
+}
+
+int AudioBackendAlsa::write(const char *pcm, size_t size)
+{
+  //
+  // LibAO:
+  //
+  ao_play(dev, (char *)pcm, size);
+  return 0;
+}