libextractor

GNU libextractor
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commit 24706cad439ae05a6d2930dcc294a9a33835f9f2
parent f42f3aba9ff946d4c31532cefaf8bc844a668b96
Author: Toni Ruottu <toni.ruottu@helsinki.fi>
Date:   Tue, 12 Aug 2008 01:43:59 +0000

Added s3m support.

Diffstat:
MAUTHORS | 1+
MChangeLog | 3+++
MNEWS | 1+
Msrc/main/extractor.c | 3++-
Msrc/plugins/Makefile.am | 8++++++++
Asrc/plugins/s3mextractor.c | 92+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 107 insertions(+), 1 deletion(-)

diff --git a/AUTHORS b/AUTHORS @@ -42,6 +42,7 @@ nsfe - Toni Ruottu <toni.ruottu@iki.fi> applefile - Heikki Lindholm it - Toni Ruottu <toni.ruottu@iki.fi> xm - Toni Ruottu <toni.ruottu@iki.fi> +s3m - Toni Ruottu <toni.ruottu@iki.fi> General contributors: Yuri N. Sedunov <aris@altlinux.ru> diff --git a/ChangeLog b/ChangeLog @@ -1,3 +1,6 @@ +Tue Aug 12 04:40:49 EEST 2008 + Added an S3M (Scream Tracker 3 Module) plugin. + Tue Aug 12 03:55:01 EEST 2008 Added an XM (eXtended Module) plugin. diff --git a/NEWS b/NEWS @@ -1,3 +1,4 @@ + Added an S3M (Scream Tracker 3 Module) plugin. Added an XM (eXtended Module) plugin. Added an IT (Impulse Tracker) plugin. diff --git a/src/main/extractor.c b/src/main/extractor.c @@ -265,7 +265,8 @@ libextractor_sid:\ libextractor_nsfe:\ libextractor_nsf:\ libextractor_it:\ -libextractor_xm" +libextractor_xm:\ +libextractor_s3m" #define DEFAULT_LIBRARIES MPEGSO EXSO OLESO OGGSO FLACSO QTSO DEFSO diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am @@ -113,6 +113,7 @@ plugin_LTLIBRARIES = $(pdfplugin) \ $(extraqt) \ libextractor_real.la \ libextractor_riff.la \ + libextractor_s3m.la \ libextractor_sid.la \ libextractor_split.la \ libextractor_tar.la \ @@ -390,6 +391,13 @@ libextractor_xm_la_LDFLAGS = \ libextractor_xm_la_LIBADD = \ $(top_builddir)/src/main/libextractor.la +libextractor_s3m_la_SOURCES = \ + s3mextractor.c +libextractor_s3m_la_LDFLAGS = \ + $(PLUGINFLAGS) $(retaincommand) +libextractor_s3m_la_LIBADD = \ + $(top_builddir)/src/main/libextractor.la + libextractor_split_la_SOURCES = \ splitextractor.c libextractor_split_la_LDFLAGS = \ diff --git a/src/plugins/s3mextractor.c b/src/plugins/s3mextractor.c @@ -0,0 +1,92 @@ +/* + * This file is part of libextractor. + * (C) 2008 Toni Ruottu + * + * libextractor 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, or (at your + * option) any later version. + * + * libextractor 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 libextractor; see the file COPYING. If not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + */ + +#include "platform.h" +#include "extractor.h" +#include "convert.h" + +#define HEADER_SIZE 0x70 + +struct header +{ + char title[28]; + char something[16]; + char magicid[4]; +}; + + +static struct EXTRACTOR_Keywords *addkword + (EXTRACTOR_KeywordList * oldhead, + const char *phrase, EXTRACTOR_KeywordType type) +{ + EXTRACTOR_KeywordList *keyword; + + keyword = malloc (sizeof (EXTRACTOR_KeywordList)); + keyword->next = oldhead; + keyword->keyword = strdup (phrase); + keyword->keywordType = type; + return (keyword); +} + + +/* "extract" keyword from a Scream Tracker 3 Module + * + * "Scream Tracker 3.01 BETA File Formats And Mixing Info" + * was used, while this piece of software was originally + * written. + * + */ +struct EXTRACTOR_Keywords *libextractor_s3m_extract + (const char *filename, + char *data, size_t size, struct EXTRACTOR_Keywords *prev) +{ + char title[29]; + struct header *head; + + /* Check header size */ + + if (size < HEADER_SIZE) + { + return (prev); + } + + head = (struct header *) data; + + /* Check "magic" id bytes */ + + if (memcmp (head->magicid, "SCRM", 4)) + { + return (prev); + } + + /* Mime-type */ + + prev = addkword (prev, "audio/x-s3m", EXTRACTOR_MIMETYPE); + + /* Song title */ + + memcpy (&title, head->title, 28); + title[29] = '\0'; + prev = addkword (prev, title, EXTRACTOR_TITLE); + + return (prev); + +}