Initial commit.

code/mp3code/mhead.h

@@ -0,0 +1,102 @@
+#ifndef MHEAD_H
+#define MHEAD_H
+
+
+/*____________________________________________________________________________
+	
+	FreeAmp - The Free MP3 Player
+
+        MP3 Decoder originally Copyright (C) 1995-1997 Xing Technology
+        Corp.  http://www.xingtech.com
+
+	Portions Copyright (C) 1998 EMusic.com
+
+	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., 675 Mass Ave, Cambridge, MA 02139, USA.
+	
+	$Id: mhead.h,v 1.3 1999/10/19 07:13:08 elrod Exp $
+____________________________________________________________________________*/
+
+/* portable copy of eco\mhead.h */
+/* mpeg audio header   */
+typedef struct
+{
+   int sync;			/* 1 if valid sync */
+   int id;
+   int option;
+   int prot;
+   int br_index;
+   int sr_index;
+   int pad;
+   int private_bit;
+   int mode;
+   int mode_ext;
+   int cr;
+   int original;
+   int emphasis;
+}
+MPEG_HEAD;
+
+/* portable mpeg audio decoder, decoder functions */
+
+#ifndef IN_OUT
+#include "small_header.h"
+#endif
+
+typedef struct
+{
+   int channels;
+   int outvalues;
+   long samprate;
+   int bits;
+   int framebytes;
+   int type;
+}
+DEC_INFO;
+
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+   int head_info(unsigned char *buf, unsigned int n, MPEG_HEAD * h);
+   int head_info2(unsigned char *buf,
+	   unsigned int n, MPEG_HEAD * h, int *br);
+	int head_info3(unsigned char *buf, unsigned int n, MPEG_HEAD *h, int*br, unsigned int *searchForward);
+/* head_info returns framebytes > 0 for success */
+/* audio_decode_init returns 1 for success, 0 for fail */
+/* audio_decode returns in_bytes = 0 on sync loss */
+
+   int audio_decode_init(MPEG_HEAD * h, int framebytes_arg,
+		   int reduction_code, int transform_code, int convert_code,
+			 int freq_limit);
+   void audio_decode_info(DEC_INFO * info);
+   IN_OUT audio_decode(unsigned char *bs, short *pcm, unsigned char *pNextByteAfterData);
+
+   int audio_decode8_init(MPEG_HEAD * h, int framebytes_arg,
+		   int reduction_code, int transform_code, int convert_code,
+			  int freq_limit);
+   void audio_decode8_info(DEC_INFO * info);
+   IN_OUT audio_decode8(unsigned char *bs, short *pcmbuf);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#pragma warning(disable:4711)	// function 'xxxx' selected for automatic inline expansion
+
+#endif	// #ifndef MHEAD_H
+