[pulseaudio-commits] r2334 - in /branches/coling/airtunes/src/modules/rtp: base64.c base64.h
svnmailer-noreply at 0pointer.de
svnmailer-noreply at 0pointer.de
Thu May 1 16:43:35 PDT 2008
Author: coling
Date: Fri May 2 01:43:34 2008
New Revision: 2334
URL: http://0pointer.de/cgi-bin/viewcvs.cgi?rev=2334&root=pulseaudio&view=rev
Log:
Add a simple base64 library that will be used by the sink
Added:
branches/coling/airtunes/src/modules/rtp/base64.c (with props)
branches/coling/airtunes/src/modules/rtp/base64.h (with props)
Added: branches/coling/airtunes/src/modules/rtp/base64.c
URL: http://0pointer.de/cgi-bin/viewcvs.cgi/branches/coling/airtunes/src/modules/rtp/base64.c?rev=2334&root=pulseaudio&view=auto
==============================================================================
--- branches/coling/airtunes/src/modules/rtp/base64.c (added)
+++ branches/coling/airtunes/src/modules/rtp/base64.c Fri May 2 01:43:34 2008
@@ -1,0 +1,128 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2008 Colin Guthrie
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+/*
+ This file was originally inspired by a file developed by
+ Kungliga Tekniska H�gskolan
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "base64.h"
+
+static char base64_chars[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static int pos(char c)
+{
+ char *p;
+ for (p = base64_chars; *p; p++)
+ if (*p == c)
+ return p - base64_chars;
+ return -1;
+}
+
+int pa_base64_encode(const void *data, int size, char **str)
+{
+ char *s, *p;
+ int i;
+ int c;
+ const unsigned char *q;
+
+ p = s = (char *) malloc(size * 4 / 3 + 4);
+ if (p == NULL)
+ return -1;
+ q = (const unsigned char *) data;
+ i = 0;
+ for (i = 0; i < size;) {
+ c = q[i++];
+ c *= 256;
+ if (i < size)
+ c += q[i];
+ i++;
+ c *= 256;
+ if (i < size)
+ c += q[i];
+ i++;
+ p[0] = base64_chars[(c & 0x00fc0000) >> 18];
+ p[1] = base64_chars[(c & 0x0003f000) >> 12];
+ p[2] = base64_chars[(c & 0x00000fc0) >> 6];
+ p[3] = base64_chars[(c & 0x0000003f) >> 0];
+ if (i > size)
+ p[3] = '=';
+ if (i > size + 1)
+ p[2] = '=';
+ p += 4;
+ }
+ *p = 0;
+ *str = s;
+ return strlen(s);
+}
+
+#define DECODE_ERROR 0xffffffff
+
+static unsigned int token_decode(const char *token)
+{
+ int i;
+ unsigned int val = 0;
+ int marker = 0;
+ if (strlen(token) < 4)
+ return DECODE_ERROR;
+ for (i = 0; i < 4; i++) {
+ val *= 64;
+ if (token[i] == '=')
+ marker++;
+ else if (marker > 0)
+ return DECODE_ERROR;
+ else
+ val += pos(token[i]);
+ }
+ if (marker > 2)
+ return DECODE_ERROR;
+ return (marker << 24) | val;
+}
+
+int pa_base64_decode(const char *str, void *data)
+{
+ const char *p;
+ unsigned char *q;
+
+ q = data;
+ for (p = str; *p && (*p == '=' || strchr(base64_chars, *p)); p += 4) {
+ unsigned int val = token_decode(p);
+ unsigned int marker = (val >> 24) & 0xff;
+ if (val == DECODE_ERROR)
+ return -1;
+ *q++ = (val >> 16) & 0xff;
+ if (marker < 2)
+ *q++ = (val >> 8) & 0xff;
+ if (marker < 1)
+ *q++ = val & 0xff;
+ }
+ return q - (unsigned char *) data;
+}
Propchange: branches/coling/airtunes/src/modules/rtp/base64.c
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: branches/coling/airtunes/src/modules/rtp/base64.c
------------------------------------------------------------------------------
svn:mime-type = text/plain
Added: branches/coling/airtunes/src/modules/rtp/base64.h
URL: http://0pointer.de/cgi-bin/viewcvs.cgi/branches/coling/airtunes/src/modules/rtp/base64.h?rev=2334&root=pulseaudio&view=auto
==============================================================================
--- branches/coling/airtunes/src/modules/rtp/base64.h (added)
+++ branches/coling/airtunes/src/modules/rtp/base64.h Fri May 2 01:43:34 2008
@@ -1,0 +1,35 @@
+#ifndef foobase64hfoo
+#define foobase64hfoo
+
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2008 Colin Guthrie
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+/*
+ This file was originally inspired by a file developed by
+ Kungliga Tekniska Högskolan
+*/
+
+int pa_base64_encode(const void *data, int size, char **str);
+int pa_base64_decode(const char *str, void *data);
+
+#endif
Propchange: branches/coling/airtunes/src/modules/rtp/base64.h
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: branches/coling/airtunes/src/modules/rtp/base64.h
------------------------------------------------------------------------------
svn:mime-type = text/plain
More information about the pulseaudio-commits
mailing list