diff options
| -rw-r--r-- | libavutil/arm/intmath.h | 16 | ||||
| -rw-r--r-- | libavutil/common.h | 32 | ||||
| -rw-r--r-- | libavutil/version.h | 2 |
3 files changed, 48 insertions, 2 deletions
diff --git a/libavutil/arm/intmath.h b/libavutil/arm/intmath.h index 65e42c5733..5311a7d52b 100644 --- a/libavutil/arm/intmath.h +++ b/libavutil/arm/intmath.h @@ -94,6 +94,22 @@ static av_always_inline int av_sat_dadd32_arm(int a, int b) return r; } +#define av_sat_sub32 av_sat_sub32_arm +static av_always_inline int av_sat_sub32_arm(int a, int b) +{ + int r; + __asm__ ("qsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); + return r; +} + +#define av_sat_dsub32 av_sat_dsub32_arm +static av_always_inline int av_sat_dsub32_arm(int a, int b) +{ + int r; + __asm__ ("qdsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b)); + return r; +} + #endif /* HAVE_ARMV6_INLINE */ #if HAVE_ASM_MOD_Q diff --git a/libavutil/common.h b/libavutil/common.h index 8142b31fdb..5e0382827b 100644 --- a/libavutil/common.h +++ b/libavutil/common.h @@ -260,7 +260,7 @@ static av_always_inline int av_sat_add32_c(int a, int b) * * @param a first value * @param b value doubled and added to a - * @return sum with signed saturation + * @return sum sat(a + sat(2*b)) with signed saturation */ static av_always_inline int av_sat_dadd32_c(int a, int b) { @@ -268,6 +268,30 @@ static av_always_inline int av_sat_dadd32_c(int a, int b) } /** + * Subtract two signed 32-bit values with saturation. + * + * @param a one value + * @param b another value + * @return difference with signed saturation + */ +static av_always_inline int av_sat_sub32_c(int a, int b) +{ + return av_clipl_int32((int64_t)a - b); +} + +/** + * Subtract a doubled value from another value with saturation at both stages. + * + * @param a first value + * @param b value doubled and subtracted from a + * @return difference sat(a - sat(2*b)) with signed saturation + */ +static av_always_inline int av_sat_dsub32_c(int a, int b) +{ + return av_sat_sub32(a, av_sat_add32(b, b)); +} + +/** * Clip a float value into the amin-amax range. * @param a value to clip * @param amin minimum value of the clip range @@ -513,6 +537,12 @@ static av_always_inline av_const int av_parity_c(uint32_t v) #ifndef av_sat_dadd32 # define av_sat_dadd32 av_sat_dadd32_c #endif +#ifndef av_sat_sub32 +# define av_sat_sub32 av_sat_sub32_c +#endif +#ifndef av_sat_dsub32 +# define av_sat_dsub32 av_sat_dsub32_c +#endif #ifndef av_clipf # define av_clipf av_clipf_c #endif diff --git a/libavutil/version.h b/libavutil/version.h index 285d2f1cf9..498b5d8414 100644 --- a/libavutil/version.h +++ b/libavutil/version.h @@ -79,7 +79,7 @@ */ #define LIBAVUTIL_VERSION_MAJOR 56 -#define LIBAVUTIL_VERSION_MINOR 4 +#define LIBAVUTIL_VERSION_MINOR 5 #define LIBAVUTIL_VERSION_MICRO 100 #define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \ |