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veejay
2023-09-16 23:28:58 +02:00
parent b298c9c954
commit 1f97e186bb
1 changed files with 6 additions and 9 deletions
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15
veejay-current/veejay-server/libsubsample/subsample.c
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@@ -1146,21 +1146,18 @@ static void ss_444_to_420mpeg2_neon(uint8_t *buffer, int width, int height) {
uint8x8_t vzero = vdup_n_u8(0);
for (y = 0; y < height; y += 2) {
for (x = 0; x < width; x += 16) { // Process 16 pixels at a time
for (x = 0; x < width; x += 16) {
uint8x8_t vin0_1 = vld1_u8(in0);
uint8x8_t vin0_2 = vld1_u8(in0 + 8);
uint8x8_t vin1_1 = vld1_u8(in1);
uint8x8_t vin1_2 = vld1_u8(in1 + 8);
uint16x4_t vsum1_low = vpaddl_u8(vin0_1);
uint16x4_t vsum1_high = vpaddl_u8(vin0_2);
vsum1_low = vadd_u16(vsum1_low, vpaddl_u8(vin1_1));
vsum1_high = vadd_u16(vsum1_high, vpaddl_u8(vin1_2));
uint16x8_t vsum1 = vaddl_u8(vin0_1, vin0_2);
vsum1 = vaddw_u8(vsum1, vin1_1);
vsum1 = vaddw_u8(vsum1, vin1_2);
vsum1 = vshrn_n_u16(vsum1, 2);
uint16x8_t vsum1 = vcombine_u16(vsum1_low, vsum1_high);
vsum1 = vshrn_n_u16(vsum1, 2); // Shift right by 2
vst1_u8(out, vreinterpret_u8_u16(vsum1));
vst1_u8(out, vreinterpret_u8_u16(vget_low_u16(vsum1)));
in0 += 16;
in1 += 16;
out += 8;