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API: gst_rtsp_base64_decode_ip()

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Original commit message from CVS:
* docs/libs/gst-plugins-base-libs-sections.txt:
* gst-libs/gst/rtsp/gstrtspbase64.c: (gst_rtsp_base64_decode_ip):
* gst-libs/gst/rtsp/gstrtspbase64.h:
API: gst_rtsp_base64_decode_ip()
Added function to decode Base64 in-place.
This commit is contained in:
Wim Taymans 2007-07-26 14:33:01 +00:00
parent 58afe32d55
commit 2c35823bdf
4 changed files with 71 additions and 2 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2007-07-26 Wim Taymans <wim.taymans@gmail.com>
* docs/libs/gst-plugins-base-libs-sections.txt:
* gst-libs/gst/rtsp/gstrtspbase64.c: (gst_rtsp_base64_decode_ip):
* gst-libs/gst/rtsp/gstrtspbase64.h:
API: gst_rtsp_base64_decode_ip()
Added function to decode Base64 in-place.
2007-07-26 Jan Schmidt <thaytan@mad.scientist.com>
* tests/check/libs/.cvsignore:

1
docs/libs/gst-plugins-base-libs-sections.txt
View file

@ -1007,6 +1007,7 @@ gst_rtsp_transport_free
<FILE>gstrtspbase64</FILE>
<INCLUDE>gst/rtsp/gstrtspbase64.h</INCLUDE>
gst_rtsp_base64_encode
gst_rtsp_base64_decode_ip
</SECTION>
<SECTION>

61
gst-libs/gst/rtsp/gstrtspbase64.c
View file

@ -19,7 +19,7 @@
/**
* SECTION:gstrtspbase64
* @short_description: Helper function to encode into Base64
* @short_description: Helper functions to handle Base64
*
* Last reviewed on 2007-07-24 (0.10.14)
*/
@ -28,6 +28,8 @@
#include "config.h"
#endif
#include <string.h>
#include "gstrtspbase64.h"
static char base64table[64] = {
@ -85,3 +87,60 @@ gst_rtsp_base64_encode (const gchar * data, gsize len)
return result;
}
/**
* gst_rtsp_base64_decode_ip:
* @data: the base64 encoded data
* @len: location for output length or NULL
*
* Decode the base64 string pointed to by @data in-place. When @len is not #NULL
* it will contain the length of the decoded data.
*/
void
gst_rtsp_base64_decode_ip (gchar * data, gsize * len)
{
char dtable[256];
int i, j, k = 0, n = strlen (data);
for (i = 0; i < 255; i++)
dtable[i] = 0x80;
for (i = 'A'; i <= 'Z'; i++)
dtable[i] = 0 + (i - 'A');
for (i = 'a'; i <= 'z'; i++)
dtable[i] = 26 + (i - 'a');
for (i = '0'; i <= '9'; i++)
dtable[i] = 52 + (i - '0');
dtable['+'] = 62;
dtable['/'] = 63;
dtable['='] = 0;
for (j = 0; j < n; j += 4) {
char a[4], b[4];
for (i = 0; i < 4; i++) {
int c = data[i + j];
if (dtable[c] & 0x80) {
if (len)
*len = 0;
return;
}
a[i] = (char) c;
b[i] = (char) dtable[c];
}
data[k++] = (b[0] << 2) | (b[1] >> 4);
data[k++] = (b[1] << 4) | (b[2] >> 2);
data[k++] = (b[2] << 6) | b[3];
i = a[2] == '=' ? 1 : (a[3] == '=' ? 2 : 3);
if (i < 3) {
data[k] = 0;
if (len)
*len = k;
return;
}
}
data[k] = 0;
if (len)
*len = k;
return;
}

3
gst-libs/gst/rtsp/gstrtspbase64.h
View file

@ -24,7 +24,8 @@
G_BEGIN_DECLS
gchar *gst_rtsp_base64_encode(const gchar *data, gsize len);
gchar *gst_rtsp_base64_encode (const gchar *data, gsize len);
void gst_rtsp_base64_decode_ip (gchar *data, gsize *len);
G_END_DECLS