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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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222 lines
4.2 KiB
C
222 lines
4.2 KiB
C
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gst/gst.h>
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#include <string.h> /* memcmp */
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#include <ctype.h> /* isdigit */
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#include "modplug_types.h"
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#define MODULEHEADERSIZE 0x438
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gboolean MOD_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf ) + MODULEHEADERSIZE;
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/* Protracker and variants */
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if (( ! memcmp( data, "M.K.", 4 )) || ( ! memcmp( data, "M!K!", 4 )))
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return TRUE;
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/* Star Tracker */
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if ((( ! memcmp( data, "FLT", 3 )) || ( ! memcmp( data, "EXO", 3 ))) && ( isdigit( data[3] )))
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return TRUE;
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/* Oktalyzer (Amiga) */
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if (! memcmp( data, "OKTA", 4 ))
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return TRUE;
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/* Oktalyser (Atari) */
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if ( ! memcmp( data, "CD81", 4 ))
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return TRUE;
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/* Fasttracker */
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if (( ! memcmp( data + 1, "CHN", 3 )) && ( isdigit( data[0] )))
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return TRUE;
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/* Fasttracker or Taketracker */
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if ((( ! memcmp( data + 2, "CH", 2 )) || ( ! memcmp( data + 2, "CN", 2 ))) && ( isdigit( data[0] )) && ( isdigit( data[1] )))
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return TRUE;
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return FALSE;
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}
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gboolean Mod_669_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( ! memcmp( data, "if", 2 ) || ! memcmp( data, "JN", 2 ))
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return TRUE;
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return FALSE;
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}
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gboolean Amf_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( memcmp( data, "AMF", 3) )
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return FALSE;
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data = GST_BUFFER_DATA( buf ) + 3;
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if (( (gint)*data >= 10 ) && ( (gint)*data <= 14 ))
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return TRUE;
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return FALSE;
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}
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gboolean Dsm_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( ! memcmp( data, "RIFF", 4 ) && ! memcmp( data + 8, "DSMF", 4 ))
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return TRUE;
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return FALSE;
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}
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gboolean Fam_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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static unsigned char FARSIG[4+3]={'F','A','R',0xfe,13,10,26};
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data = GST_BUFFER_DATA( buf );
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if(( memcmp( data, FARSIG, 4 )) || ( memcmp( data + 44, FARSIG + 4, 3 )))
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return FALSE;
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return 1;
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}
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gboolean Gdm_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if ( ! memcmp( data, "GDM\xfe", 4 ) && ! memcmp( data + 71, "GMFS", 4 ))
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return TRUE;
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return FALSE;
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}
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gboolean Imf_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf ) + 0x3c;
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if( ! memcmp( data, "IM10", 4))
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return TRUE;
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return FALSE;
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}
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gboolean It_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( ! memcmp( data, "IMPM", 4 ))
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return TRUE;
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return FALSE;
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}
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gboolean M15_CheckType( GstBuffer *buf )
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{
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/* FIXME: M15 CheckType to do */
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return FALSE;
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}
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gboolean Med_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if(( ! memcmp(data, "MMD0", 4 )) || ( memcmp( data, "MMD1", 4 )))
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return TRUE;
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return FALSE;
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}
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gboolean Mtm_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( ! memcmp( data, "MTM", 3 ))
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return TRUE;
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return FALSE;
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}
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gboolean Okt_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( ! memcmp( data, "OKTSONG", 8 ))
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return TRUE;
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return FALSE;
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}
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gboolean S3m_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf ) + 0x2c;
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if( ! memcmp( data, "SCRM", 4 ))
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return TRUE;
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return FALSE;
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}
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gboolean Xm_CheckType( GstBuffer *buf )
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{
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guint8 *data;
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data = GST_BUFFER_DATA( buf );
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if( memcmp( data, "Extended Module: ", 17 ))
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return FALSE;
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if( data[ 37 ] == 0x1a )
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return TRUE;
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return FALSE;
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}
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