C++ (Cpp) vst2q_s16 Examples

Example #1

File: vst2Qs16.c Project: 5432935/crossbridge

void test_vst2Qs16 (void)
{
  int16_t *arg0_int16_t;
  int16x8x2_t arg1_int16x8x2_t;

  vst2q_s16 (arg0_int16_t, arg1_int16x8x2_t);
}

Example #2

File: dequantizeb_neon.c Project: venkatarajasekhar/Qt

void vp8_dequantize_b_neon(BLOCKD *d, short *DQC) {
    int16x8x2_t qQ, qDQC, qDQ;

    qQ   = vld2q_s16(d->qcoeff);
    qDQC = vld2q_s16(DQC);

    qDQ.val[0] = vmulq_s16(qQ.val[0], qDQC.val[0]);
    qDQ.val[1] = vmulq_s16(qQ.val[1], qDQC.val[1]);

    vst2q_s16(d->dqcoeff, qDQ);
}

Example #3

File: dequantizeb_neon.c Project: DoubangoTelecom/libvpx_fast

void vp8_dequantize_b_loop_neon(
        int16_t *Q,
        int16_t *DQC,
        int16_t *DQ) {
    int16x8x2_t qQ, qDQC, qDQ;

    qQ   = vld2q_s16(Q);
    qDQC = vld2q_s16(DQC);

    qDQ.val[0] = vmulq_s16(qQ.val[0], qDQC.val[0]);
    qDQ.val[1] = vmulq_s16(qQ.val[1], qDQC.val[1]);

    vst2q_s16(DQ, qDQ);
    return;
}

Example #4

File: rfx_neon.c Project: AlessioLeo/FreeRDP

rfx_dwt_2d_decode_block_horiz_NEON(INT16 * l, INT16 * h, INT16 * dst, int subband_width)
{
	int y, n;
	INT16 * l_ptr = l;
	INT16 * h_ptr = h;
	INT16 * dst_ptr = dst;

	for (y = 0; y < subband_width; y++)
	{
		/* Even coefficients */
		for (n = 0; n < subband_width; n+=8)
		{
			// dst[2n] = l[n] - ((h[n-1] + h[n] + 1) >> 1);
			int16x8_t l_n = vld1q_s16(l_ptr);

			int16x8_t h_n = vld1q_s16(h_ptr);
			int16x8_t h_n_m = vld1q_s16(h_ptr - 1);

			if (n == 0)
			{
				int16_t first = vgetq_lane_s16(h_n_m, 1);
				h_n_m = vsetq_lane_s16(first, h_n_m, 0);
			}

			int16x8_t tmp_n = vaddq_s16(h_n, h_n_m);
			tmp_n = vaddq_s16(tmp_n, vdupq_n_s16(1));
			tmp_n = vshrq_n_s16(tmp_n, 1);

			int16x8_t dst_n = vsubq_s16(l_n, tmp_n);

			vst1q_s16(l_ptr, dst_n);

			l_ptr+=8;
			h_ptr+=8;
		}
		l_ptr -= subband_width;
		h_ptr -= subband_width;

		/* Odd coefficients */
		for (n = 0; n < subband_width; n+=8)
		{
			// dst[2n + 1] = (h[n] << 1) + ((dst[2n] + dst[2n + 2]) >> 1);

			int16x8_t h_n = vld1q_s16(h_ptr);

			h_n = vshlq_n_s16(h_n, 1);

			int16x8x2_t dst_n;
			dst_n.val[0] = vld1q_s16(l_ptr);
			int16x8_t dst_n_p = vld1q_s16(l_ptr + 1);
			if (n == subband_width - 8)
			{
				int16_t last = vgetq_lane_s16(dst_n_p, 6);
				dst_n_p = vsetq_lane_s16(last, dst_n_p, 7);
			}

			dst_n.val[1] = vaddq_s16(dst_n_p, dst_n.val[0]);
			dst_n.val[1] = vshrq_n_s16(dst_n.val[1], 1);

			dst_n.val[1] = vaddq_s16(dst_n.val[1], h_n);

			vst2q_s16(dst_ptr, dst_n);

			l_ptr+=8;
			h_ptr+=8;
			dst_ptr+=16;
		}
	}
}

Example #5

File: vtransform.hpp Project: 007Indian/opencv

inline void vst2q(s16 * ptr, const int16x8x2_t   & v) { return vst2q_s16(ptr, v); }