From f51c4bfe3f34c8ff33a2b9d93e42745119c396a3 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 30 Sep 2012 02:39:55 +0200 Subject: bitstream: add get_bits_longlong() to support more than 32bits Signed-off-by: Michael Niedermayer --- libavcodec/get_bits.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'libavcodec/get_bits.h') diff --git a/libavcodec/get_bits.h b/libavcodec/get_bits.h index 0aabca23cc..05ac8f7ef9 100644 --- a/libavcodec/get_bits.h +++ b/libavcodec/get_bits.h @@ -315,6 +315,24 @@ static inline unsigned int get_bits_long(GetBitContext *s, int n) } } +/** + * Read 0-64 bits. + */ +static inline uint64_t get_bits_longlong(GetBitContext *s, int n) +{ + if (n <= 32) + return get_bits_long(s, n); + else { +#ifdef BITSTREAM_READER_LE + uint64_t ret = get_bits_long(s, 32); + return ret | (((uint64_t)get_bits_long(s, n-32)) << 32); +#else + uint64_t ret = ((uint64_t)get_bits_long(s, 32)) << (n-32); + return ret | get_bits_long(s, n-32); +#endif + } +} + /** * Read 0-32 bits as a signed integer. */ -- cgit v1.2.3