22 #ifndef AVCODEC_H264QPEL_H 23 #define AVCODEC_H264QPEL_H Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
qpel_mc_func avg_h264_qpel_pixels_tab[4][16]
void(* qpel_mc_func)(uint8_t *dst, const uint8_t *src, ptrdiff_t stride)
void ff_h264qpel_init(H264QpelContext *c, int bit_depth)
qpel_mc_func put_h264_qpel_pixels_tab[4][16]
static void bit_depth(AudioStatsContext *s, uint64_t mask, uint64_t imask, AVRational *depth)
void ff_h264qpel_init_mips(H264QpelContext *c, int bit_depth)
void ff_h264qpel_init_aarch64(H264QpelContext *c, int bit_depth)
void ff_h264qpel_init_ppc(H264QpelContext *c, int bit_depth)
void ff_h264qpel_init_arm(H264QpelContext *c, int bit_depth)
void ff_h264qpel_init_x86(H264QpelContext *c, int bit_depth)