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qtdemux: add qt_atom_parser_get_offset() and optimise _peek_sub()

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This commit is contained in:
Tim-Philipp Müller 2009-08-15 20:38:40 +01:00
parent 410ebb7eb3
commit 5875e2016a
1 changed files with 28 additions and 2 deletions
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30
gst/qtdemux/qtatomparser.h
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@ -104,10 +104,10 @@ qt_atom_parser_peek_sub (QtAtomParser * parser, guint offset, guint size,
{
*sub = *parser;
if (G_UNLIKELY (!gst_byte_reader_skip (sub, offset)))
if (G_UNLIKELY (!qt_atom_parser_skip (sub, offset)))
return FALSE;
return (gst_byte_reader_get_remaining (sub) >= size);
return (qt_atom_parser_get_remaining (sub) >= size);
}
static inline gboolean
@ -122,4 +122,30 @@ qt_atom_parser_skipn_and_get_uint32 (QtAtomParser * parser,
return TRUE;
}
/* off_size must be either 4 or 8 */
static inline gboolean
qt_atom_parser_get_offset (QtAtomParser * parser, guint off_size, guint64 * val)
{
if (G_UNLIKELY (qt_atom_parser_get_remaining (parser) < off_size))
return FALSE;
if (off_size == sizeof (guint64)) {
*val = qt_atom_parser_get_uint64_unchecked (parser);
} else {
*val = qt_atom_parser_get_uint32_unchecked (parser);
}
return TRUE;
}
/* off_size must be either 4 or 8 */
static inline guint64
qt_atom_parser_get_offset_unchecked (QtAtomParser * parser, guint off_size)
{
if (off_size == sizeof (guint64)) {
return qt_atom_parser_get_uint64_unchecked (parser);
} else {
return qt_atom_parser_get_uint32_unchecked (parser);
}
}
#endif /* QT_ATOM_PARSER_H */