push

buffer.h

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2008-2013 Various Authors
+ * Copyright 2004 Timo Hirvonen
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CMUS_BUFFER_H
+#define CMUS_BUFFER_H
+
+/*
+ * must be a multiple of any supported frame size
+ *
+ * 12 is the LCM of 1, 2, 3 and 4, which corresponds to
+ * 8, 16, 24 and 32 bits respectively
+ *
+ * 840 is the LCM of 1, 2, 3, 4, 5, 6, 7 and 8, which
+ * are the numbers of supported channels
+ *
+ * we used to define the value as 60 * 1024 = 61440
+ * hence the extra 6, which makes the new value 60480
+ */
+#define CHUNK_SIZE (12 * 840 * 6)
+
+extern unsigned int buffer_nr_chunks;
+
+void buffer_init(void);
+void buffer_free(void);
+int buffer_get_rpos(char **pos);
+int buffer_get_wpos(char **pos);
+void buffer_consume(int count);
+int buffer_fill(int count);
+void buffer_reset(void);
+int buffer_get_filled_chunks(void);
+
+#endif