From 0359e6ddfb15fe24a413fe6113eefd0cdb7bb7a3 Mon Sep 17 00:00:00 2001
From: albeu <albeu@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Wed, 9 Apr 2008 00:43:19 +0000
Subject: [PATCH] Split the aac header parsing out of aac demuxer to allow
 using libmpmux without libmpdemux.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26359 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libmpdemux/Makefile    |  3 ++-
 libmpdemux/aac_hdr.c   | 48 ++++++++++++++++++++++++++++++++++++++++++
 libmpdemux/demux_aac.c | 20 +-----------------
 3 files changed, 51 insertions(+), 20 deletions(-)
 create mode 100644 libmpdemux/aac_hdr.c

diff --git a/libmpdemux/Makefile b/libmpdemux/Makefile
index e17e0d8933..38d28ec399 100644
--- a/libmpdemux/Makefile
+++ b/libmpdemux/Makefile
@@ -3,7 +3,8 @@ include ../config.mak
 LIBNAME_COMMON   = libmpdemux.a
 LIBNAME_MENCODER = libmpmux.a
 
-SRCS_COMMON = asfheader.c \
+SRCS_COMMON = aac_hdr.c \
+              asfheader.c \
               aviheader.c \
               aviprint.c \
               demuxer.c \
diff --git a/libmpdemux/aac_hdr.c b/libmpdemux/aac_hdr.c
new file mode 100644
index 0000000000..b9ca15c748
--- /dev/null
+++ b/libmpdemux/aac_hdr.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2005 Nico Sabbi
+ *
+ * This file is part of MPlayer.
+ *
+ * MPlayer 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.
+ *
+ * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdlib.h>
+#include <inttypes.h>
+
+#include "config.h"
+
+/// \param srate (out) sample rate
+/// \param num (out) number of audio frames in this ADTS frame
+/// \return size of the ADTS frame in bytes
+/// aac_parse_frames needs a buffer at least 8 bytes long
+int aac_parse_frame(uint8_t *buf, int *srate, int *num)
+{
+	int i = 0, sr, fl = 0, id;
+	static int srates[] = {96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 0, 0, 0};
+	
+	if((buf[i] != 0xFF) || ((buf[i+1] & 0xF6) != 0xF0))
+		return 0;
+	
+	id = (buf[i+1] >> 3) & 0x01;	//id=1 mpeg2, 0: mpeg4
+	sr = (buf[i+2] >> 2)  & 0x0F;
+	if(sr > 11)
+		return 0;
+	*srate = srates[sr];
+
+	fl = ((buf[i+3] & 0x03) << 11) | (buf[i+4] << 3) | ((buf[i+5] >> 5) & 0x07);
+	*num = (buf[i+6] & 0x02) + 1;
+
+	return fl;
+}
diff --git a/libmpdemux/demux_aac.c b/libmpdemux/demux_aac.c
index 0226abdb79..88d9204615 100644
--- a/libmpdemux/demux_aac.c
+++ b/libmpdemux/demux_aac.c
@@ -25,25 +25,7 @@ typedef struct {
 /// \param num (out) number of audio frames in this ADTS frame
 /// \return size of the ADTS frame in bytes
 /// aac_parse_frames needs a buffer at least 8 bytes long
-int aac_parse_frame(uint8_t *buf, int *srate, int *num)
-{
-	int i = 0, sr, fl = 0, id;
-	static int srates[] = {96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 0, 0, 0};
-	
-	if((buf[i] != 0xFF) || ((buf[i+1] & 0xF6) != 0xF0))
-		return 0;
-	
-	id = (buf[i+1] >> 3) & 0x01;	//id=1 mpeg2, 0: mpeg4
-	sr = (buf[i+2] >> 2)  & 0x0F;
-	if(sr > 11)
-		return 0;
-	*srate = srates[sr];
-
-	fl = ((buf[i+3] & 0x03) << 11) | (buf[i+4] << 3) | ((buf[i+5] >> 5) & 0x07);
-	*num = (buf[i+6] & 0x02) + 1;
-
-	return fl;
-}
+int aac_parse_frame(uint8_t *buf, int *srate, int *num);
 
 static int demux_aac_init(demuxer_t *demuxer)
 {