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71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
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/* GStreamer
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* Copyright (C) <2007> Mike Smith <msmith@xiph.org>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "base64.h"
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static char base64table[64] = {
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
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'P',
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'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e',
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'f',
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'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u',
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'v',
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'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
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};
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/* This isn't efficient, but it doesn't need to be */
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gchar *
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util_base64_encode (gchar * data, gint len)
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{
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gchar *out = g_malloc (len * 4 / 3 + 4);
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gchar *result = out;
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int chunk;
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while (len > 0) {
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chunk = (len > 3) ? 3 : len;
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*out++ = base64table[(*data & 0xFC) >> 2];
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*out++ = base64table[((*data & 0x03) << 4) | ((*(data + 1) & 0xF0) >> 4)];
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switch (chunk) {
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case 3:
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*out++ =
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base64table[((*(data + 1) & 0x0F) << 2) | ((*(data +
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2) & 0xC0) >> 6)];
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*out++ = base64table[(*(data + 2)) & 0x3F];
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break;
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case 2:
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*out++ = base64table[((*(data + 1) & 0x0F) << 2)];
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*out++ = '=';
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break;
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case 1:
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*out++ = '=';
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*out++ = '=';
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break;
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}
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data += chunk;
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len -= chunk;
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}
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*out = 0;
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return result;
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}
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