Initial SVN import

[maemo-recorder] / src / maemo-recorder-au.h

diff --git a/src/maemo-recorder-au.h b/src/maemo-recorder-au.h
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+/* vim: set ts=4 sw=4 et: */
+/*
+ * maemo-recorder-au.h
+ * Support for reading and writing AU/SND files
+ *
+ * Copyright (C) 2006 Nokia Corporation
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 MAEMO_RECORDER_AU_H
+#define MAEMO_RECORDER_AU_H
+
+#include <libgnomevfs/gnome-vfs.h>
+
+#include <stdio.h>
+
+#define AU_MAGIC ((uint32_t) 0x2e736e64) /* ".snd" */
+#define AU_SIZE_UNKNOWN (~0)    /* (unsigned) -1 */
+
+enum
+{
+    AU_ENCODING_MULAW_8 = 1,    /* 8-bit ISDN u-law */
+    AU_ENCODING_LINEAR_8 = 2,   /* 8-bit linear PCM */
+    AU_ENCODING_LINEAR_16 = 3,  /* 16-bit linear PCM */
+    AU_ENCODING_LINEAR_24 = 4,  /* 24-bit linear PCM */ 
+    AU_ENCODING_LINEAR_32 = 5,  /* 32-bit linear PCM */ 
+    AU_ENCODING_FLOAT = 6,      /* 32-bit IEEE floating point */ 
+    AU_ENCODING_DOUBLE = 7,     /* 64-bit IEEE floating point */ 
+    AU_ENCODING_ADPCM_G721 = 23,    /* 4-bit CCITT g.721 ADPCM */ 
+    AU_ENCODING_ADPCM_G722 = 24,    /* CCITT g.722 ADPCM */ 
+    AU_ENCODING_ADPCM_G723_3 = 25,  /* CCITT g.723 3-bit ADPCM */ 
+    AU_ENCODING_ADPCM_G723_5 = 26,  /* CCITT g.723 5-bit ADPCM */ 
+    AU_ENCODING_ALAW_8 = 27,    /* 8-bit ISDN A-law */
+};
+
+struct au_header 
+{
+    uint32_t magic;
+    uint32_t data_offset;
+    uint32_t data_size;
+    uint32_t encoding;
+    uint32_t sample_rate;
+    uint32_t channels;
+
+} __attribute__((__packed__));
+
+
+gint au_write(GnomeVFSHandle *handle, guint32 encoding, guint32 rate, guint32 channels, gconstpointer data, size_t len);
+
+gint 
+au_write_copy(GnomeVFSHandle *to_handle, guint32 encoding, guint32 rate, guint32 channels, GnomeVFSHandle *from_handle, size_t len);
+
+gint
+au_get_info(GnomeVFSHandle *handle, guint32 *format, guint32 *rate, guint32 *channels, guint32 *data_size, guint32 *data_offset);
+
+gint au_copy_data(GnomeVFSHandle *to_handle, GnomeVFSHandle *from_handle, guint32 from_offset);
+
+guint32 au_get_encoding(AudioFormat format);
+
+#endif