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add SSE optimized routine for linear interpolated slow motion

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veejay
2023-10-08 02:45:18 +02:00
parent ed02a50146
commit 69cfb8c3db
1 changed files with 25 additions and 2 deletions
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27
veejay-current/veejay-core/libvjmem/memcpy.c
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@@ -154,6 +154,9 @@
#include <immintrin.h>
#endif
#ifdef HAVE_ASM_SSE2
#include <smmintrin.h>
#endif
#define BUFSIZE 1024
@@ -2526,13 +2529,32 @@ static void vj_frame_clearN( uint8_t **input, int *strides, unsigned int val )
static inline void vj_frame_slow1( uint8_t *dst, uint8_t *a, uint8_t *b, const int len, const float frac )
{
#ifndef HAVE_ASM_MMX
#ifndef HAVE_ASM_MMX
int i;
for( i = 0; i < len; i ++ ) {
dst[i] = a[i] + ( frac * ( b[i] - a[i] ) );
}
#else
uint32_t ialpha = (256 * frac);
#ifdef HAVE_ASM_SSE2
int i;
__m128i frac128 = _mm_set1_epi32((int)(frac * 65536.0f));
for (i = 0; i <= len - 16; i += 16) {
__m128i a_vec = _mm_loadu_si128((__m128i*)(a + i));
__m128i b_vec = _mm_loadu_si128((__m128i*)(b + i));
__m128i diff = _mm_sub_epi16(b_vec, a_vec);
__m128i scaled_diff = _mm_mulhi_epi16(diff, frac128);
__m128i result = _mm_add_epi16(a_vec, scaled_diff);
_mm_storeu_si128((__m128i*)(dst + i), result);
}
for (; i < len; ++i) {
dst[i] = a[i] + (uint8_t)((frac * (b[i] - a[i])) + 0.5f);
}
#else
uint32_t ialpha = (256 * frac);
unsigned int i;
ialpha |= ialpha << 16;
@@ -2563,6 +2585,7 @@ static inline void vj_frame_slow1( uint8_t *dst, uint8_t *a, uint8_t *b, const i
, [alpha] "m" (ialpha));
}
#endif
#endif
}
static void vj_frame_slow_job( void *arg )