// 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 ([email protected]) #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 … #define MULT_FIX … #define MULT_FIX_FLOOR … //------------------------------------------------------------------------------ // Row export #if 0 // disabled for now. TODO(skal): make match the C-code 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_FLOOR(*frow++, yscale); const int v = (int)MULT_FIX(*irow - frac, wrk->fxy_scale); *dst++ = (v > 255) ? 255u : (uint8_t)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_FLOOR(*irow, wrk->fxy_scale); *dst++ = (v > 255) ? 255u : (uint8_t)v; *irow++ = 0; } } } #endif // 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); *dst++ = (v > 255) ? 255u : (uint8_t)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); *dst++ = (v > 255) ? 255u : (uint8_t)v; } } } #undef MULT_FIX_FLOOR #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
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