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Unified Diff: third_party/libwebp/dsp/rescaler_mips_dsp_r2.c

Issue 1546003002: libwebp: update to 0.5.0 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 5 years ago
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Index: third_party/libwebp/dsp/rescaler_mips_dsp_r2.c
diff --git a/third_party/libwebp/dsp/rescaler_mips_dsp_r2.c b/third_party/libwebp/dsp/rescaler_mips_dsp_r2.c
new file mode 100644
index 0000000000000000000000000000000000000000..b457d0a30a6861197914d432c89a47b4a7db3c22
--- /dev/null
+++ b/third_party/libwebp/dsp/rescaler_mips_dsp_r2.c
@@ -0,0 +1,314 @@
+// Copyright 2014 Google Inc. All Rights Reserved.
+//
+// Use of this source code is governed by a BSD-style license
+// that can be found in the COPYING 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.
+// -----------------------------------------------------------------------------
+//
+// MIPS version of rescaling functions
+//
+// Author(s): Djordje Pesut (djordje.pesut@imgtec.com)
+
+#include "./dsp.h"
+
+#if defined(WEBP_USE_MIPS_DSP_R2)
+
+#include <assert.h>
+#include "../utils/rescaler.h"
+
+#define ROUNDER (WEBP_RESCALER_ONE >> 1)
+#define MULT_FIX(x, y) (((uint64_t)(x) * (y) + ROUNDER) >> WEBP_RESCALER_RFIX)
+
+//------------------------------------------------------------------------------
+// Row export
+
+static void ExportRowShrink(WebPRescaler* const wrk) {
+ int i;
+ const int x_out_max = wrk->dst_width * wrk->num_channels;
+ uint8_t* dst = wrk->dst;
+ rescaler_t* irow = wrk->irow;
+ const rescaler_t* frow = wrk->frow;
+ const int yscale = wrk->fy_scale * (-wrk->y_accum);
+ int temp0, temp1, temp2, temp3, temp4, temp5, loop_end;
+ const int temp7 = (int)wrk->fxy_scale;
+ const int temp6 = (x_out_max & ~0x3) << 2;
+ assert(!WebPRescalerOutputDone(wrk));
+ assert(wrk->y_accum <= 0);
+ assert(!wrk->y_expand);
+ assert(wrk->fxy_scale != 0);
+ if (yscale) {
+ if (x_out_max >= 4) {
+ int temp8, temp9, temp10, temp11;
+ __asm__ volatile (
+ "li %[temp3], 0x10000 \n\t"
+ "li %[temp4], 0x8000 \n\t"
+ "addu %[loop_end], %[frow], %[temp6] \n\t"
+ "1: \n\t"
+ "lw %[temp0], 0(%[frow]) \n\t"
+ "lw %[temp1], 4(%[frow]) \n\t"
+ "lw %[temp2], 8(%[frow]) \n\t"
+ "lw %[temp5], 12(%[frow]) \n\t"
+ "mult $ac0, %[temp3], %[temp4] \n\t"
+ "maddu $ac0, %[temp0], %[yscale] \n\t"
+ "mult $ac1, %[temp3], %[temp4] \n\t"
+ "maddu $ac1, %[temp1], %[yscale] \n\t"
+ "mult $ac2, %[temp3], %[temp4] \n\t"
+ "maddu $ac2, %[temp2], %[yscale] \n\t"
+ "mult $ac3, %[temp3], %[temp4] \n\t"
+ "maddu $ac3, %[temp5], %[yscale] \n\t"
+ "addiu %[frow], %[frow], 16 \n\t"
+ "mfhi %[temp0], $ac0 \n\t"
+ "mfhi %[temp1], $ac1 \n\t"
+ "mfhi %[temp2], $ac2 \n\t"
+ "mfhi %[temp5], $ac3 \n\t"
+ "lw %[temp8], 0(%[irow]) \n\t"
+ "lw %[temp9], 4(%[irow]) \n\t"
+ "lw %[temp10], 8(%[irow]) \n\t"
+ "lw %[temp11], 12(%[irow]) \n\t"
+ "addiu %[dst], %[dst], 4 \n\t"
+ "addiu %[irow], %[irow], 16 \n\t"
+ "subu %[temp8], %[temp8], %[temp0] \n\t"
+ "subu %[temp9], %[temp9], %[temp1] \n\t"
+ "subu %[temp10], %[temp10], %[temp2] \n\t"
+ "subu %[temp11], %[temp11], %[temp5] \n\t"
+ "mult $ac0, %[temp3], %[temp4] \n\t"
+ "maddu $ac0, %[temp8], %[temp7] \n\t"
+ "mult $ac1, %[temp3], %[temp4] \n\t"
+ "maddu $ac1, %[temp9], %[temp7] \n\t"
+ "mult $ac2, %[temp3], %[temp4] \n\t"
+ "maddu $ac2, %[temp10], %[temp7] \n\t"
+ "mult $ac3, %[temp3], %[temp4] \n\t"
+ "maddu $ac3, %[temp11], %[temp7] \n\t"
+ "mfhi %[temp8], $ac0 \n\t"
+ "mfhi %[temp9], $ac1 \n\t"
+ "mfhi %[temp10], $ac2 \n\t"
+ "mfhi %[temp11], $ac3 \n\t"
+ "sw %[temp0], -16(%[irow]) \n\t"
+ "sw %[temp1], -12(%[irow]) \n\t"
+ "sw %[temp2], -8(%[irow]) \n\t"
+ "sw %[temp5], -4(%[irow]) \n\t"
+ "sb %[temp8], -4(%[dst]) \n\t"
+ "sb %[temp9], -3(%[dst]) \n\t"
+ "sb %[temp10], -2(%[dst]) \n\t"
+ "sb %[temp11], -1(%[dst]) \n\t"
+ "bne %[frow], %[loop_end], 1b \n\t"
+ : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
+ [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
+ [irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end),
+ [temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10),
+ [temp11]"=&r"(temp11), [temp2]"=&r"(temp2)
+ : [temp7]"r"(temp7), [yscale]"r"(yscale), [temp6]"r"(temp6)
+ : "memory", "hi", "lo", "$ac1hi", "$ac1lo",
+ "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
+ );
+ }
+ for (i = 0; i < (x_out_max & 0x3); ++i) {
+ const uint32_t frac = (uint32_t)MULT_FIX(*frow++, yscale);
+ const int v = (int)MULT_FIX(*irow - frac, wrk->fxy_scale);
+ assert(v >= 0 && v <= 255);
+ *dst++ = v;
+ *irow++ = frac; // new fractional start
+ }
+ } else {
+ if (x_out_max >= 4) {
+ __asm__ volatile (
+ "li %[temp3], 0x10000 \n\t"
+ "li %[temp4], 0x8000 \n\t"
+ "addu %[loop_end], %[irow], %[temp6] \n\t"
+ "1: \n\t"
+ "lw %[temp0], 0(%[irow]) \n\t"
+ "lw %[temp1], 4(%[irow]) \n\t"
+ "lw %[temp2], 8(%[irow]) \n\t"
+ "lw %[temp5], 12(%[irow]) \n\t"
+ "addiu %[dst], %[dst], 4 \n\t"
+ "addiu %[irow], %[irow], 16 \n\t"
+ "mult $ac0, %[temp3], %[temp4] \n\t"
+ "maddu $ac0, %[temp0], %[temp7] \n\t"
+ "mult $ac1, %[temp3], %[temp4] \n\t"
+ "maddu $ac1, %[temp1], %[temp7] \n\t"
+ "mult $ac2, %[temp3], %[temp4] \n\t"
+ "maddu $ac2, %[temp2], %[temp7] \n\t"
+ "mult $ac3, %[temp3], %[temp4] \n\t"
+ "maddu $ac3, %[temp5], %[temp7] \n\t"
+ "mfhi %[temp0], $ac0 \n\t"
+ "mfhi %[temp1], $ac1 \n\t"
+ "mfhi %[temp2], $ac2 \n\t"
+ "mfhi %[temp5], $ac3 \n\t"
+ "sw $zero, -16(%[irow]) \n\t"
+ "sw $zero, -12(%[irow]) \n\t"
+ "sw $zero, -8(%[irow]) \n\t"
+ "sw $zero, -4(%[irow]) \n\t"
+ "sb %[temp0], -4(%[dst]) \n\t"
+ "sb %[temp1], -3(%[dst]) \n\t"
+ "sb %[temp2], -2(%[dst]) \n\t"
+ "sb %[temp5], -1(%[dst]) \n\t"
+ "bne %[irow], %[loop_end], 1b \n\t"
+ : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
+ [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [irow]"+r"(irow),
+ [dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2)
+ : [temp7]"r"(temp7), [temp6]"r"(temp6)
+ : "memory", "hi", "lo", "$ac1hi", "$ac1lo",
+ "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
+ );
+ }
+ for (i = 0; i < (x_out_max & 0x3); ++i) {
+ const int v = (int)MULT_FIX(*irow, wrk->fxy_scale);
+ assert(v >= 0 && v <= 255);
+ *dst++ = v;
+ *irow++ = 0;
+ }
+ }
+}
+
+static void ExportRowExpand(WebPRescaler* const wrk) {
+ int i;
+ uint8_t* dst = wrk->dst;
+ rescaler_t* irow = wrk->irow;
+ const int x_out_max = wrk->dst_width * wrk->num_channels;
+ const rescaler_t* frow = wrk->frow;
+ int temp0, temp1, temp2, temp3, temp4, temp5, loop_end;
+ const int temp6 = (x_out_max & ~0x3) << 2;
+ const int temp7 = (int)wrk->fy_scale;
+ assert(!WebPRescalerOutputDone(wrk));
+ assert(wrk->y_accum <= 0);
+ assert(wrk->y_expand);
+ assert(wrk->y_sub != 0);
+ if (wrk->y_accum == 0) {
+ if (x_out_max >= 4) {
+ __asm__ volatile (
+ "li %[temp4], 0x10000 \n\t"
+ "li %[temp5], 0x8000 \n\t"
+ "addu %[loop_end], %[frow], %[temp6] \n\t"
+ "1: \n\t"
+ "lw %[temp0], 0(%[frow]) \n\t"
+ "lw %[temp1], 4(%[frow]) \n\t"
+ "lw %[temp2], 8(%[frow]) \n\t"
+ "lw %[temp3], 12(%[frow]) \n\t"
+ "addiu %[dst], %[dst], 4 \n\t"
+ "addiu %[frow], %[frow], 16 \n\t"
+ "mult $ac0, %[temp4], %[temp5] \n\t"
+ "maddu $ac0, %[temp0], %[temp7] \n\t"
+ "mult $ac1, %[temp4], %[temp5] \n\t"
+ "maddu $ac1, %[temp1], %[temp7] \n\t"
+ "mult $ac2, %[temp4], %[temp5] \n\t"
+ "maddu $ac2, %[temp2], %[temp7] \n\t"
+ "mult $ac3, %[temp4], %[temp5] \n\t"
+ "maddu $ac3, %[temp3], %[temp7] \n\t"
+ "mfhi %[temp0], $ac0 \n\t"
+ "mfhi %[temp1], $ac1 \n\t"
+ "mfhi %[temp2], $ac2 \n\t"
+ "mfhi %[temp3], $ac3 \n\t"
+ "sb %[temp0], -4(%[dst]) \n\t"
+ "sb %[temp1], -3(%[dst]) \n\t"
+ "sb %[temp2], -2(%[dst]) \n\t"
+ "sb %[temp3], -1(%[dst]) \n\t"
+ "bne %[frow], %[loop_end], 1b \n\t"
+ : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
+ [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
+ [dst]"+r"(dst), [loop_end]"=&r"(loop_end), [temp2]"=&r"(temp2)
+ : [temp7]"r"(temp7), [temp6]"r"(temp6)
+ : "memory", "hi", "lo", "$ac1hi", "$ac1lo",
+ "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
+ );
+ }
+ for (i = 0; i < (x_out_max & 0x3); ++i) {
+ const uint32_t J = *frow++;
+ const int v = (int)MULT_FIX(J, wrk->fy_scale);
+ assert(v >= 0 && v <= 255);
+ *dst++ = v;
+ }
+ } else {
+ const uint32_t B = WEBP_RESCALER_FRAC(-wrk->y_accum, wrk->y_sub);
+ const uint32_t A = (uint32_t)(WEBP_RESCALER_ONE - B);
+ if (x_out_max >= 4) {
+ int temp8, temp9, temp10, temp11;
+ __asm__ volatile (
+ "li %[temp8], 0x10000 \n\t"
+ "li %[temp9], 0x8000 \n\t"
+ "addu %[loop_end], %[frow], %[temp6] \n\t"
+ "1: \n\t"
+ "lw %[temp0], 0(%[frow]) \n\t"
+ "lw %[temp1], 4(%[frow]) \n\t"
+ "lw %[temp2], 8(%[frow]) \n\t"
+ "lw %[temp3], 12(%[frow]) \n\t"
+ "lw %[temp4], 0(%[irow]) \n\t"
+ "lw %[temp5], 4(%[irow]) \n\t"
+ "lw %[temp10], 8(%[irow]) \n\t"
+ "lw %[temp11], 12(%[irow]) \n\t"
+ "addiu %[dst], %[dst], 4 \n\t"
+ "mult $ac0, %[temp8], %[temp9] \n\t"
+ "maddu $ac0, %[A], %[temp0] \n\t"
+ "maddu $ac0, %[B], %[temp4] \n\t"
+ "mult $ac1, %[temp8], %[temp9] \n\t"
+ "maddu $ac1, %[A], %[temp1] \n\t"
+ "maddu $ac1, %[B], %[temp5] \n\t"
+ "mult $ac2, %[temp8], %[temp9] \n\t"
+ "maddu $ac2, %[A], %[temp2] \n\t"
+ "maddu $ac2, %[B], %[temp10] \n\t"
+ "mult $ac3, %[temp8], %[temp9] \n\t"
+ "maddu $ac3, %[A], %[temp3] \n\t"
+ "maddu $ac3, %[B], %[temp11] \n\t"
+ "addiu %[frow], %[frow], 16 \n\t"
+ "addiu %[irow], %[irow], 16 \n\t"
+ "mfhi %[temp0], $ac0 \n\t"
+ "mfhi %[temp1], $ac1 \n\t"
+ "mfhi %[temp2], $ac2 \n\t"
+ "mfhi %[temp3], $ac3 \n\t"
+ "mult $ac0, %[temp8], %[temp9] \n\t"
+ "maddu $ac0, %[temp0], %[temp7] \n\t"
+ "mult $ac1, %[temp8], %[temp9] \n\t"
+ "maddu $ac1, %[temp1], %[temp7] \n\t"
+ "mult $ac2, %[temp8], %[temp9] \n\t"
+ "maddu $ac2, %[temp2], %[temp7] \n\t"
+ "mult $ac3, %[temp8], %[temp9] \n\t"
+ "maddu $ac3, %[temp3], %[temp7] \n\t"
+ "mfhi %[temp0], $ac0 \n\t"
+ "mfhi %[temp1], $ac1 \n\t"
+ "mfhi %[temp2], $ac2 \n\t"
+ "mfhi %[temp3], $ac3 \n\t"
+ "sb %[temp0], -4(%[dst]) \n\t"
+ "sb %[temp1], -3(%[dst]) \n\t"
+ "sb %[temp2], -2(%[dst]) \n\t"
+ "sb %[temp3], -1(%[dst]) \n\t"
+ "bne %[frow], %[loop_end], 1b \n\t"
+ : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp3]"=&r"(temp3),
+ [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [frow]"+r"(frow),
+ [irow]"+r"(irow), [dst]"+r"(dst), [loop_end]"=&r"(loop_end),
+ [temp8]"=&r"(temp8), [temp9]"=&r"(temp9), [temp10]"=&r"(temp10),
+ [temp11]"=&r"(temp11), [temp2]"=&r"(temp2)
+ : [temp7]"r"(temp7), [temp6]"r"(temp6), [A]"r"(A), [B]"r"(B)
+ : "memory", "hi", "lo", "$ac1hi", "$ac1lo",
+ "$ac2hi", "$ac2lo", "$ac3hi", "$ac3lo"
+ );
+ }
+ for (i = 0; i < (x_out_max & 0x3); ++i) {
+ const uint64_t I = (uint64_t)A * *frow++
+ + (uint64_t)B * *irow++;
+ const uint32_t J = (uint32_t)((I + ROUNDER) >> WEBP_RESCALER_RFIX);
+ const int v = (int)MULT_FIX(J, wrk->fy_scale);
+ assert(v >= 0 && v <= 255);
+ *dst++ = v;
+ }
+ }
+}
+
+#undef MULT_FIX
+#undef ROUNDER
+
+//------------------------------------------------------------------------------
+// Entry point
+
+extern void WebPRescalerDspInitMIPSdspR2(void);
+
+WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInitMIPSdspR2(void) {
+ WebPRescalerExportRowExpand = ExportRowExpand;
+ WebPRescalerExportRowShrink = ExportRowShrink;
+}
+
+#else // !WEBP_USE_MIPS_DSP_R2
+
+WEBP_DSP_INIT_STUB(WebPRescalerDspInitMIPSdspR2)
+
+#endif // WEBP_USE_MIPS_DSP_R2
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