commit 21d4464f2dd32afe60f3c5cb6d59723f7241a80e
parent 7cd6af4cdfc3b300fe95697883b630bceea2db11
Author: Christian Grothoff <christian@grothoff.org>
Date: Fri, 18 Dec 2009 17:42:53 +0000
wav
Diffstat:
3 files changed, 134 insertions(+), 132 deletions(-)
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
@@ -88,7 +88,8 @@ plugin_LTLIBRARIES = \
$(pdf) \
libextractor_real.la \
$(rpm) \
- $(thumbgtk)
+ $(thumbgtk) \
+ libextractor_wav.la
libextractor_applefile_la_SOURCES = \
applefile_extractor.c
@@ -244,6 +245,14 @@ libextractor_thumbnailgtk_la_LDFLAGS = \
libextractor_thumbnailgtk_la_SOURCES = \
thumbnailgtk_extractor.c
+libextractor_wav_la_SOURCES = \
+ wav_extractor.c
+libextractor_wav_la_LDFLAGS = \
+ $(PLUGINFLAGS)
+libextractor_wav_la_LIBADD = \
+ $(LE_LIBINTL)
+
+
@@ -268,7 +277,6 @@ OLD_LIBS = \
libextractor_tar.la \
libextractor_tiff.la \
$(thumbqt) \
- libextractor_wav.la \
libextractor_xm.la \
libextractor_zip.la
@@ -288,13 +296,6 @@ libextractor_ps_la_LDFLAGS = \
libextractor_ps_la_LIBADD = \
$(top_builddir)/src/main/libextractor.la
-libextractor_wav_la_SOURCES = \
- wavextractor.c
-libextractor_wav_la_LDFLAGS = \
- $(PLUGINFLAGS)
-libextractor_wav_la_LIBADD = \
- $(LE_LIBINTL)
-
libextractor_id3v2_la_SOURCES = \
id3v2extractor.c
libextractor_id3v2_la_LDFLAGS = \
diff --git a/src/plugins/wav_extractor.c b/src/plugins/wav_extractor.c
@@ -0,0 +1,124 @@
+/*
+ This file is part of libextractor.
+ (C) 2004, 2009 Vidyut Samanta and Christian Grothoff
+
+ 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.
+
+ This code was based on bitcollider 0.6.0
+ (PD) 2004 The Bitzi Corporation
+ http://bitzi.com/
+ (PD) 2001 The Bitzi Corporation
+ Please see file COPYING or http://bitzi.com/publicdomain
+ for more info.
+*/
+
+
+#include "platform.h"
+#include "extractor.h"
+
+#if BIG_ENDIAN_HOST
+static short
+toLittleEndian16 (short in)
+{
+ char *ptr = (char *) ∈
+
+ return ((ptr[1] & 0xFF) << 8) | (ptr[0] & 0xFF);
+}
+
+static unsigned int
+toLittleEndian32 (unsigned int in)
+{
+ char *ptr = (char *) ∈
+
+ return ((ptr[3] & 0xFF) << 24) | ((ptr[2] & 0xFF) << 16) | ((ptr[1] & 0xFF)
+ << 8) | (ptr[0]
+ &
+ 0xFF);
+}
+#endif
+
+
+/*
+ 16 4 bytes 0x00000010 // Length of the fmt data (16 bytes)
+ 20 2 bytes 0x0001 // Format tag: 1 = PCM
+ 22 2 bytes <channels> // Channels: 1 = mono, 2 = stereo
+ 24 4 bytes <sample rate> // Samples per second: e.g., 44100
+*/
+int
+EXTRACTOR_wav_extract (const unsigned char *buf,
+ size_t bufLen,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *options)
+{
+ unsigned short channels;
+ unsigned short sampleSize;
+ unsigned int sampleRate;
+ unsigned int dataLen;
+ unsigned int samples;
+ char scratch[256];
+
+ if ((bufLen < 44) ||
+ (buf[0] != 'R' || buf[1] != 'I' ||
+ buf[2] != 'F' || buf[3] != 'F' ||
+ buf[8] != 'W' || buf[9] != 'A' ||
+ buf[10] != 'V' || buf[11] != 'E' ||
+ buf[12] != 'f' || buf[13] != 'm' || buf[14] != 't' || buf[15] != ' '))
+ return 0; /* not a WAV file */
+
+ channels = *((unsigned short *) &buf[22]);
+ sampleRate = *((unsigned int *) &buf[24]);
+ sampleSize = *((unsigned short *) &buf[34]);
+ dataLen = *((unsigned int *) &buf[40]);
+
+#if BIG_ENDIAN_HOST
+ channels = toLittleEndian16 (channels);
+ sampleSize = toLittleEndian16 (sampleSize);
+ sampleRate = toLittleEndian32 (sampleRate);
+ dataLen = toLittleEndian32 (dataLen);
+#endif
+
+ if (sampleSize != 8 && sampleSize != 16)
+ return 0; /* invalid sample size found in wav file */
+ if (channels == 0)
+ return 0; /* invalid channels value -- avoid division by 0! */
+ samples = dataLen / (channels * (sampleSize >> 3));
+
+ snprintf (scratch,
+ sizeof (scratch),
+ "%u ms, %d Hz, %s",
+ (samples < sampleRate)
+ ? (samples * 1000 / sampleRate)
+ : (samples / sampleRate) * 1000,
+ sampleRate, channels == 1 ? _("mono") : _("stereo"));
+ if (0 != proc (proc_cls,
+ "wav",
+ EXTRACTOR_METATYPE_RESOURCE_TYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ scratch,
+ strlen (scratch) +1))
+ return 1;
+ if (0 != proc (proc_cls,
+ "wav",
+ EXTRACTOR_METATYPE_MIMETYPE,
+ EXTRACTOR_METAFORMAT_UTF8,
+ "text/plain",
+ "audio/x-wav",
+ strlen ("audio/x-wav") +1))
+ return 1;
+ return 0;
+}
diff --git a/src/plugins/wavextractor.c b/src/plugins/wavextractor.c
@@ -1,123 +0,0 @@
-/*
- This file is part of libextractor.
- (C) 2004 Vidyut Samanta and Christian Grothoff
-
- 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.
-
- This code was based on bitcollider 0.6.0
- (PD) 2004 The Bitzi Corporation
- http://bitzi.com/
- (PD) 2001 The Bitzi Corporation
- Please see file COPYING or http://bitzi.com/publicdomain
- for more info.
-*/
-
-
-#include "platform.h"
-#include "extractor.h"
-#include "pack.h"
-
-static void
-addKeyword (struct EXTRACTOR_Keywords **list,
- char *keyword, EXTRACTOR_KeywordType type)
-{
- EXTRACTOR_KeywordList *next;
- next = malloc (sizeof (EXTRACTOR_KeywordList));
- next->next = *list;
- next->keyword = keyword;
- next->keywordType = type;
- *list = next;
-}
-
-#if BIG_ENDIAN_HOST
-static short
-toLittleEndian16 (short in)
-{
- char *ptr = (char *) ∈
-
- return ((ptr[1] & 0xFF) << 8) | (ptr[0] & 0xFF);
-}
-
-static unsigned int
-toLittleEndian32 (unsigned int in)
-{
- char *ptr = (char *) ∈
-
- return ((ptr[3] & 0xFF) << 24) | ((ptr[2] & 0xFF) << 16) | ((ptr[1] & 0xFF)
- << 8) | (ptr[0]
- &
- 0xFF);
-}
-#endif
-
-
-/*
- 16 4 bytes 0x00000010 // Length of the fmt data (16 bytes)
- 20 2 bytes 0x0001 // Format tag: 1 = PCM
- 22 2 bytes <channels> // Channels: 1 = mono, 2 = stereo
- 24 4 bytes <sample rate> // Samples per second: e.g., 44100
-*/
-struct EXTRACTOR_Keywords *
-libextractor_wav_extract (char *filename,
- const unsigned char *buf,
- size_t bufLen, struct EXTRACTOR_Keywords *prev)
-{
- unsigned short channels;
- unsigned short sampleSize;
- unsigned int sampleRate;
- unsigned int dataLen;
- unsigned int samples;
- char *scratch;
-
-
- if ((bufLen < 44) ||
- (buf[0] != 'R' || buf[1] != 'I' ||
- buf[2] != 'F' || buf[3] != 'F' ||
- buf[8] != 'W' || buf[9] != 'A' ||
- buf[10] != 'V' || buf[11] != 'E' ||
- buf[12] != 'f' || buf[13] != 'm' || buf[14] != 't' || buf[15] != ' '))
- return prev; /* not a WAV file */
-
- channels = *((unsigned short *) &buf[22]);
- sampleRate = *((unsigned int *) &buf[24]);
- sampleSize = *((unsigned short *) &buf[34]);
- dataLen = *((unsigned int *) &buf[40]);
-
-#if BIG_ENDIAN_HOST
- channels = toLittleEndian16 (channels);
- sampleSize = toLittleEndian16 (sampleSize);
- sampleRate = toLittleEndian32 (sampleRate);
- dataLen = toLittleEndian32 (dataLen);
-#endif
-
- if (sampleSize != 8 && sampleSize != 16)
- return prev; /* invalid sample size found in wav file */
- if (channels == 0)
- return prev; /* invalid channels value -- avoid division by 0! */
- samples = dataLen / (channels * (sampleSize >> 3));
-
- scratch = malloc (256);
- snprintf (scratch,
- 256,
- "%u ms, %d Hz, %s",
- (samples < sampleRate)
- ? (samples * 1000 / sampleRate)
- : (samples / sampleRate) * 1000,
- sampleRate, channels == 1 ? _("mono") : _("stereo"));
- addKeyword (&prev, scratch, EXTRACTOR_FORMAT);
- addKeyword (&prev, strdup ("audio/x-wav"), EXTRACTOR_MIMETYPE);
- return prev;
-}
