summaryrefslogtreecommitdiffstats
path: root/media/libvpx/libvpx/vp8/common/mips/dspr2/idctllm_dspr2.c
diff options
context:
space:
mode:
Diffstat (limited to 'media/libvpx/libvpx/vp8/common/mips/dspr2/idctllm_dspr2.c')
-rw-r--r--media/libvpx/libvpx/vp8/common/mips/dspr2/idctllm_dspr2.c346
1 files changed, 346 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/common/mips/dspr2/idctllm_dspr2.c b/media/libvpx/libvpx/vp8/common/mips/dspr2/idctllm_dspr2.c
new file mode 100644
index 0000000000..9163ffad1e
--- /dev/null
+++ b/media/libvpx/libvpx/vp8/common/mips/dspr2/idctllm_dspr2.c
@@ -0,0 +1,346 @@
+/*
+ * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "vp8_rtcd.h"
+
+#if HAVE_DSPR2
+#define CROP_WIDTH 256
+
+/******************************************************************************
+ * Notes:
+ *
+ * This implementation makes use of 16 bit fixed point version of two multiply
+ * constants:
+ * 1. sqrt(2) * cos (pi/8)
+ * 2. sqrt(2) * sin (pi/8)
+ * Since the first constant is bigger than 1, to maintain the same 16 bit
+ * fixed point precision as the second one, we use a trick of
+ * x * a = x + x*(a-1)
+ * so
+ * x * sqrt(2) * cos (pi/8) = x + x * (sqrt(2) *cos(pi/8)-1).
+ ****************************************************************************/
+extern unsigned char ff_cropTbl[256 + 2 * CROP_WIDTH];
+static const int cospi8sqrt2minus1 = 20091;
+static const int sinpi8sqrt2 = 35468;
+
+inline void prefetch_load_short(short *src) {
+ __asm__ __volatile__("pref 0, 0(%[src]) \n\t" : : [src] "r"(src));
+}
+
+void vp8_short_idct4x4llm_dspr2(short *input, unsigned char *pred_ptr,
+ int pred_stride, unsigned char *dst_ptr,
+ int dst_stride) {
+ int r, c;
+ int a1, b1, c1, d1;
+ short output[16];
+ short *ip = input;
+ short *op = output;
+ int temp1, temp2;
+ int shortpitch = 4;
+
+ int c2, d2;
+ int temp3, temp4;
+ unsigned char *cm = ff_cropTbl + CROP_WIDTH;
+
+ /* prepare data for load */
+ prefetch_load_short(ip + 8);
+
+ /* first loop is unrolled */
+ a1 = ip[0] + ip[8];
+ b1 = ip[0] - ip[8];
+
+ temp1 = (ip[4] * sinpi8sqrt2) >> 16;
+ temp2 = ip[12] + ((ip[12] * cospi8sqrt2minus1) >> 16);
+ c1 = temp1 - temp2;
+
+ temp1 = ip[4] + ((ip[4] * cospi8sqrt2minus1) >> 16);
+ temp2 = (ip[12] * sinpi8sqrt2) >> 16;
+ d1 = temp1 + temp2;
+
+ temp3 = (ip[5] * sinpi8sqrt2) >> 16;
+ temp4 = ip[13] + ((ip[13] * cospi8sqrt2minus1) >> 16);
+ c2 = temp3 - temp4;
+
+ temp3 = ip[5] + ((ip[5] * cospi8sqrt2minus1) >> 16);
+ temp4 = (ip[13] * sinpi8sqrt2) >> 16;
+ d2 = temp3 + temp4;
+
+ op[0] = a1 + d1;
+ op[12] = a1 - d1;
+ op[4] = b1 + c1;
+ op[8] = b1 - c1;
+
+ a1 = ip[1] + ip[9];
+ b1 = ip[1] - ip[9];
+
+ op[1] = a1 + d2;
+ op[13] = a1 - d2;
+ op[5] = b1 + c2;
+ op[9] = b1 - c2;
+
+ a1 = ip[2] + ip[10];
+ b1 = ip[2] - ip[10];
+
+ temp1 = (ip[6] * sinpi8sqrt2) >> 16;
+ temp2 = ip[14] + ((ip[14] * cospi8sqrt2minus1) >> 16);
+ c1 = temp1 - temp2;
+
+ temp1 = ip[6] + ((ip[6] * cospi8sqrt2minus1) >> 16);
+ temp2 = (ip[14] * sinpi8sqrt2) >> 16;
+ d1 = temp1 + temp2;
+
+ temp3 = (ip[7] * sinpi8sqrt2) >> 16;
+ temp4 = ip[15] + ((ip[15] * cospi8sqrt2minus1) >> 16);
+ c2 = temp3 - temp4;
+
+ temp3 = ip[7] + ((ip[7] * cospi8sqrt2minus1) >> 16);
+ temp4 = (ip[15] * sinpi8sqrt2) >> 16;
+ d2 = temp3 + temp4;
+
+ op[2] = a1 + d1;
+ op[14] = a1 - d1;
+ op[6] = b1 + c1;
+ op[10] = b1 - c1;
+
+ a1 = ip[3] + ip[11];
+ b1 = ip[3] - ip[11];
+
+ op[3] = a1 + d2;
+ op[15] = a1 - d2;
+ op[7] = b1 + c2;
+ op[11] = b1 - c2;
+
+ ip = output;
+
+ /* prepare data for load */
+ prefetch_load_short(ip + shortpitch);
+
+ /* second loop is unrolled */
+ a1 = ip[0] + ip[2];
+ b1 = ip[0] - ip[2];
+
+ temp1 = (ip[1] * sinpi8sqrt2) >> 16;
+ temp2 = ip[3] + ((ip[3] * cospi8sqrt2minus1) >> 16);
+ c1 = temp1 - temp2;
+
+ temp1 = ip[1] + ((ip[1] * cospi8sqrt2minus1) >> 16);
+ temp2 = (ip[3] * sinpi8sqrt2) >> 16;
+ d1 = temp1 + temp2;
+
+ temp3 = (ip[5] * sinpi8sqrt2) >> 16;
+ temp4 = ip[7] + ((ip[7] * cospi8sqrt2minus1) >> 16);
+ c2 = temp3 - temp4;
+
+ temp3 = ip[5] + ((ip[5] * cospi8sqrt2minus1) >> 16);
+ temp4 = (ip[7] * sinpi8sqrt2) >> 16;
+ d2 = temp3 + temp4;
+
+ op[0] = (a1 + d1 + 4) >> 3;
+ op[3] = (a1 - d1 + 4) >> 3;
+ op[1] = (b1 + c1 + 4) >> 3;
+ op[2] = (b1 - c1 + 4) >> 3;
+
+ a1 = ip[4] + ip[6];
+ b1 = ip[4] - ip[6];
+
+ op[4] = (a1 + d2 + 4) >> 3;
+ op[7] = (a1 - d2 + 4) >> 3;
+ op[5] = (b1 + c2 + 4) >> 3;
+ op[6] = (b1 - c2 + 4) >> 3;
+
+ a1 = ip[8] + ip[10];
+ b1 = ip[8] - ip[10];
+
+ temp1 = (ip[9] * sinpi8sqrt2) >> 16;
+ temp2 = ip[11] + ((ip[11] * cospi8sqrt2minus1) >> 16);
+ c1 = temp1 - temp2;
+
+ temp1 = ip[9] + ((ip[9] * cospi8sqrt2minus1) >> 16);
+ temp2 = (ip[11] * sinpi8sqrt2) >> 16;
+ d1 = temp1 + temp2;
+
+ temp3 = (ip[13] * sinpi8sqrt2) >> 16;
+ temp4 = ip[15] + ((ip[15] * cospi8sqrt2minus1) >> 16);
+ c2 = temp3 - temp4;
+
+ temp3 = ip[13] + ((ip[13] * cospi8sqrt2minus1) >> 16);
+ temp4 = (ip[15] * sinpi8sqrt2) >> 16;
+ d2 = temp3 + temp4;
+
+ op[8] = (a1 + d1 + 4) >> 3;
+ op[11] = (a1 - d1 + 4) >> 3;
+ op[9] = (b1 + c1 + 4) >> 3;
+ op[10] = (b1 - c1 + 4) >> 3;
+
+ a1 = ip[12] + ip[14];
+ b1 = ip[12] - ip[14];
+
+ op[12] = (a1 + d2 + 4) >> 3;
+ op[15] = (a1 - d2 + 4) >> 3;
+ op[13] = (b1 + c2 + 4) >> 3;
+ op[14] = (b1 - c2 + 4) >> 3;
+
+ ip = output;
+
+ for (r = 0; r < 4; ++r) {
+ for (c = 0; c < 4; ++c) {
+ short a = ip[c] + pred_ptr[c];
+ dst_ptr[c] = cm[a];
+ }
+
+ ip += 4;
+ dst_ptr += dst_stride;
+ pred_ptr += pred_stride;
+ }
+}
+
+void vp8_dc_only_idct_add_dspr2(short input_dc, unsigned char *pred_ptr,
+ int pred_stride, unsigned char *dst_ptr,
+ int dst_stride) {
+ int a1;
+ int i, absa1;
+ int t2, vector_a1, vector_a;
+
+ /* a1 = ((input_dc + 4) >> 3); */
+ __asm__ __volatile__(
+ "addi %[a1], %[input_dc], 4 \n\t"
+ "sra %[a1], %[a1], 3 \n\t"
+ : [a1] "=r"(a1)
+ : [input_dc] "r"(input_dc));
+
+ if (a1 < 0) {
+ /* use quad-byte
+ * input and output memory are four byte aligned
+ */
+ __asm__ __volatile__(
+ "abs %[absa1], %[a1] \n\t"
+ "replv.qb %[vector_a1], %[absa1] \n\t"
+ : [absa1] "=r"(absa1), [vector_a1] "=r"(vector_a1)
+ : [a1] "r"(a1));
+
+ /* use (a1 - predptr[c]) instead a1 + predptr[c] */
+ for (i = 4; i--;) {
+ __asm__ __volatile__(
+ "lw %[t2], 0(%[pred_ptr]) \n\t"
+ "add %[pred_ptr], %[pred_ptr], %[pred_stride] \n\t"
+ "subu_s.qb %[vector_a], %[t2], %[vector_a1] \n\t"
+ "sw %[vector_a], 0(%[dst_ptr]) \n\t"
+ "add %[dst_ptr], %[dst_ptr], %[dst_stride] \n\t"
+ : [t2] "=&r"(t2), [vector_a] "=&r"(vector_a),
+ [dst_ptr] "+&r"(dst_ptr), [pred_ptr] "+&r"(pred_ptr)
+ : [dst_stride] "r"(dst_stride), [pred_stride] "r"(pred_stride),
+ [vector_a1] "r"(vector_a1));
+ }
+ } else {
+ /* use quad-byte
+ * input and output memory are four byte aligned
+ */
+ __asm__ __volatile__("replv.qb %[vector_a1], %[a1] \n\t"
+ : [vector_a1] "=r"(vector_a1)
+ : [a1] "r"(a1));
+
+ for (i = 4; i--;) {
+ __asm__ __volatile__(
+ "lw %[t2], 0(%[pred_ptr]) \n\t"
+ "add %[pred_ptr], %[pred_ptr], %[pred_stride] \n\t"
+ "addu_s.qb %[vector_a], %[vector_a1], %[t2] \n\t"
+ "sw %[vector_a], 0(%[dst_ptr]) \n\t"
+ "add %[dst_ptr], %[dst_ptr], %[dst_stride] \n\t"
+ : [t2] "=&r"(t2), [vector_a] "=&r"(vector_a),
+ [dst_ptr] "+&r"(dst_ptr), [pred_ptr] "+&r"(pred_ptr)
+ : [dst_stride] "r"(dst_stride), [pred_stride] "r"(pred_stride),
+ [vector_a1] "r"(vector_a1));
+ }
+ }
+}
+
+void vp8_short_inv_walsh4x4_dspr2(short *input, short *mb_dqcoeff) {
+ short output[16];
+ int i;
+ int a1, b1, c1, d1;
+ int a2, b2, c2, d2;
+ short *ip = input;
+ short *op = output;
+
+ prefetch_load_short(ip);
+
+ for (i = 4; i--;) {
+ a1 = ip[0] + ip[12];
+ b1 = ip[4] + ip[8];
+ c1 = ip[4] - ip[8];
+ d1 = ip[0] - ip[12];
+
+ op[0] = a1 + b1;
+ op[4] = c1 + d1;
+ op[8] = a1 - b1;
+ op[12] = d1 - c1;
+
+ ip++;
+ op++;
+ }
+
+ ip = output;
+ op = output;
+
+ prefetch_load_short(ip);
+
+ for (i = 4; i--;) {
+ a1 = ip[0] + ip[3] + 3;
+ b1 = ip[1] + ip[2];
+ c1 = ip[1] - ip[2];
+ d1 = ip[0] - ip[3] + 3;
+
+ a2 = a1 + b1;
+ b2 = d1 + c1;
+ c2 = a1 - b1;
+ d2 = d1 - c1;
+
+ op[0] = a2 >> 3;
+ op[1] = b2 >> 3;
+ op[2] = c2 >> 3;
+ op[3] = d2 >> 3;
+
+ ip += 4;
+ op += 4;
+ }
+
+ for (i = 0; i < 16; ++i) {
+ mb_dqcoeff[i * 16] = output[i];
+ }
+}
+
+void vp8_short_inv_walsh4x4_1_dspr2(short *input, short *mb_dqcoeff) {
+ int a1;
+
+ a1 = ((input[0] + 3) >> 3);
+
+ __asm__ __volatile__(
+ "sh %[a1], 0(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 32(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 64(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 96(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 128(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 160(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 192(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 224(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 256(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 288(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 320(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 352(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 384(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 416(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 448(%[mb_dqcoeff]) \n\t"
+ "sh %[a1], 480(%[mb_dqcoeff]) \n\t"
+
+ :
+ : [a1] "r"(a1), [mb_dqcoeff] "r"(mb_dqcoeff));
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-06 22:51:31 +0000