diff options
Diffstat (limited to 'media/ffvpx/libavcodec/get_bits.h')
| -rw-r--r-- | media/ffvpx/libavcodec/get_bits.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/media/ffvpx/libavcodec/get_bits.h b/media/ffvpx/libavcodec/get_bits.h index 0c7f5ff0c..56ef5f0cb 100644 --- a/media/ffvpx/libavcodec/get_bits.h +++ b/media/ffvpx/libavcodec/get_bits.h @@ -32,6 +32,7 @@ #include "libavutil/intreadwrite.h" #include "libavutil/log.h" #include "libavutil/avassert.h" +#include "avcodec.h" #include "mathops.h" #include "vlc.h" @@ -201,6 +202,13 @@ static inline int get_bits_count(const GetBitContext *s) return s->index; } +/** + * Skips the specified number of bits. + * @param n the number of bits to skip, + * For the UNCHECKED_BITSTREAM_READER this must not cause the distance + * from the start to overflow int32_t. Staying within the bitstream + padding + * is sufficient, too. + */ static inline void skip_bits_long(GetBitContext *s, int n) { #if UNCHECKED_BITSTREAM_READER @@ -428,7 +436,7 @@ static inline int init_get_bits(GetBitContext *s, const uint8_t *buffer, int buffer_size; int ret = 0; - if (bit_size >= INT_MAX - 7 || bit_size < 0 || !buffer) { + if (bit_size >= INT_MAX - FFMAX(7, AV_INPUT_BUFFER_PADDING_SIZE*8) || bit_size < 0 || !buffer) { bit_size = 0; buffer = NULL; ret = AVERROR_INVALIDDATA; |