initial import

1 files changed, 50 insertions, 0 deletions

diff --git a/pcmalsa.h b/pcmalsa.h
new file mode 100644
index 0000000..d9837c5
--- /dev/null
+++ b/pcmalsa.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2022 Javier S. Pedro
+ *
+ * This program 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.
+
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef VMUSIC_PCMALSA_H
+#define VMUSIC_PCMALSA_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct _snd_pcm snd_pcm_t;
+
+class PCMOutAlsa
+{
+public:
+	PCMOutAlsa();
+	~PCMOutAlsa();
+
+    int open(const char *dev, unsigned int sampleRate, unsigned int channels);
+	int close();
+
+    ssize_t avail();
+    int wait();
+
+    ssize_t write(int16_t *buf, size_t n);
+
+private:
+    int setParams(unsigned int sampleRate, unsigned int channels, unsigned int bufferTime, unsigned int periodTime);
+
+private:
+	snd_pcm_t * _pcm;
+    size_t _bufferSize;
+    size_t _periodSize;
+};
+
+#endif