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typefind: Use unchecked byte reader methods where possible

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The size is checked before, so we can use them.
This commit is contained in:
Edward Hervey 2012-03-30 12:04:15 +02:00
parent c5d7bb8918
commit 05a778b1c4
1 changed files with 4 additions and 4 deletions
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8
gst/typefind/gsttypefindfunctions.c
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@ -235,18 +235,18 @@ check_utf16 (const guint8 * data, gint len, gint endianness)
while (len >= 2) {
/* test first for a single 16 bit value in the BMP */
if (endianness == G_BIG_ENDIAN)
gst_byte_reader_get_uint16_be (&br, &high);
high = gst_byte_reader_get_uint16_be_unchecked (&br);
else
gst_byte_reader_get_uint16_le (&br, &high);
high = gst_byte_reader_get_uint16_le_unchecked (&br);
if (high >= 0xD800 && high <= 0xDBFF) {
/* start of a surrogate pair */
if (len < 4)
return FALSE;
len -= 2;
if (endianness == G_BIG_ENDIAN)
gst_byte_reader_get_uint16_be (&br, &low);
low = gst_byte_reader_get_uint16_be_unchecked (&br);
else
gst_byte_reader_get_uint16_le (&br, &low);
low = gst_byte_reader_get_uint16_le_unchecked (&br);
if (low >= 0xDC00 && low <= 0xDFFF) {
/* second half of the surrogate pair */
} else