pcm_utils: moved code to pcm_format.c

Moved all code which converts the sample format to a separate library.

src/pcm_format.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef PCM_FORMAT_H
+#define PCM_FORMAT_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+struct pcm_convert_state;
+
+const int16_t *
+pcm_convert_to_16(struct pcm_convert_state *convert,
+		  uint8_t bits, const void *src,
+		  size_t src_size, size_t *dest_size_r);
+
+const int32_t *
+pcm_convert_to_24(uint8_t bits, const void *src,
+		  size_t src_size, size_t *dest_size_r);
+
+#endif