| // 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 "src/dsp/dsp.h" |
| |
| #if defined(WEBP_USE_MIPS_DSP_R2) && !defined(WEBP_REDUCE_SIZE) |
| |
| #include <assert.h> |
| #include "src/utils/rescaler_utils.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_MIPSdspR2(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_MIPSdspR2(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_MIPSdspR2; |
| WebPRescalerExportRowShrink = ExportRowShrink_MIPSdspR2; |
| } |
| |
| #else // !WEBP_USE_MIPS_DSP_R2 |
| |
| WEBP_DSP_INIT_STUB(WebPRescalerDspInitMIPSdspR2) |
| |
| #endif // WEBP_USE_MIPS_DSP_R2 |
