// 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. // ----------------------------------------------------------------------------- // // Image transforms and color space conversion methods for lossless decoder. // // Author(s): Djordje Pesut (djordje.pesut@imgtec.com) // Jovan Zelincevic (jovan.zelincevic@imgtec.com) #include "./dsp.h" #if defined(WEBP_USE_MIPS_DSP_R2) #include "./lossless.h" #define MAP_COLOR_FUNCS(FUNC_NAME, TYPE, GET_INDEX, GET_VALUE) \ static void FUNC_NAME(const TYPE* src, \ const uint32_t* const color_map, \ TYPE* dst, int y_start, int y_end, \ int width) { \ int y; \ for (y = y_start; y < y_end; ++y) { \ int x; \ for (x = 0; x < (width >> 2); ++x) { \ int tmp1, tmp2, tmp3, tmp4; \ __asm__ volatile ( \ ".ifc "#TYPE", uint8_t \n\t" \ "lbu %[tmp1], 0(%[src]) \n\t" \ "lbu %[tmp2], 1(%[src]) \n\t" \ "lbu %[tmp3], 2(%[src]) \n\t" \ "lbu %[tmp4], 3(%[src]) \n\t" \ "addiu %[src], %[src], 4 \n\t" \ ".endif \n\t" \ ".ifc "#TYPE", uint32_t \n\t" \ "lw %[tmp1], 0(%[src]) \n\t" \ "lw %[tmp2], 4(%[src]) \n\t" \ "lw %[tmp3], 8(%[src]) \n\t" \ "lw %[tmp4], 12(%[src]) \n\t" \ "ext %[tmp1], %[tmp1], 8, 8 \n\t" \ "ext %[tmp2], %[tmp2], 8, 8 \n\t" \ "ext %[tmp3], %[tmp3], 8, 8 \n\t" \ "ext %[tmp4], %[tmp4], 8, 8 \n\t" \ "addiu %[src], %[src], 16 \n\t" \ ".endif \n\t" \ "sll %[tmp1], %[tmp1], 2 \n\t" \ "sll %[tmp2], %[tmp2], 2 \n\t" \ "sll %[tmp3], %[tmp3], 2 \n\t" \ "sll %[tmp4], %[tmp4], 2 \n\t" \ "lwx %[tmp1], %[tmp1](%[color_map]) \n\t" \ "lwx %[tmp2], %[tmp2](%[color_map]) \n\t" \ "lwx %[tmp3], %[tmp3](%[color_map]) \n\t" \ "lwx %[tmp4], %[tmp4](%[color_map]) \n\t" \ ".ifc "#TYPE", uint8_t \n\t" \ "ext %[tmp1], %[tmp1], 8, 8 \n\t" \ "ext %[tmp2], %[tmp2], 8, 8 \n\t" \ "ext %[tmp3], %[tmp3], 8, 8 \n\t" \ "ext %[tmp4], %[tmp4], 8, 8 \n\t" \ "sb %[tmp1], 0(%[dst]) \n\t" \ "sb %[tmp2], 1(%[dst]) \n\t" \ "sb %[tmp3], 2(%[dst]) \n\t" \ "sb %[tmp4], 3(%[dst]) \n\t" \ "addiu %[dst], %[dst], 4 \n\t" \ ".endif \n\t" \ ".ifc "#TYPE", uint32_t \n\t" \ "sw %[tmp1], 0(%[dst]) \n\t" \ "sw %[tmp2], 4(%[dst]) \n\t" \ "sw %[tmp3], 8(%[dst]) \n\t" \ "sw %[tmp4], 12(%[dst]) \n\t" \ "addiu %[dst], %[dst], 16 \n\t" \ ".endif \n\t" \ : [tmp1]"=&r"(tmp1), [tmp2]"=&r"(tmp2), [tmp3]"=&r"(tmp3), \ [tmp4]"=&r"(tmp4), [src]"+&r"(src), [dst]"+r"(dst) \ : [color_map]"r"(color_map) \ : "memory" \ ); \ } \ for (x = 0; x < (width & 3); ++x) { \ *dst++ = GET_VALUE(color_map[GET_INDEX(*src++)]); \ } \ } \ } MAP_COLOR_FUNCS(MapARGB, uint32_t, VP8GetARGBIndex, VP8GetARGBValue) MAP_COLOR_FUNCS(MapAlpha, uint8_t, VP8GetAlphaIndex, VP8GetAlphaValue) #undef MAP_COLOR_FUNCS static WEBP_INLINE uint32_t ClampedAddSubtractFull(uint32_t c0, uint32_t c1, uint32_t c2) { int temp0, temp1, temp2, temp3, temp4, temp5; __asm__ volatile ( "preceu.ph.qbr %[temp1], %[c0] \n\t" "preceu.ph.qbl %[temp2], %[c0] \n\t" "preceu.ph.qbr %[temp3], %[c1] \n\t" "preceu.ph.qbl %[temp4], %[c1] \n\t" "preceu.ph.qbr %[temp5], %[c2] \n\t" "preceu.ph.qbl %[temp0], %[c2] \n\t" "subq.ph %[temp3], %[temp3], %[temp5] \n\t" "subq.ph %[temp4], %[temp4], %[temp0] \n\t" "addq.ph %[temp1], %[temp1], %[temp3] \n\t" "addq.ph %[temp2], %[temp2], %[temp4] \n\t" "shll_s.ph %[temp1], %[temp1], 7 \n\t" "shll_s.ph %[temp2], %[temp2], 7 \n\t" "precrqu_s.qb.ph %[temp2], %[temp2], %[temp1] \n\t" : [temp0]"=r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5) : [c0]"r"(c0), [c1]"r"(c1), [c2]"r"(c2) : "memory" ); return temp2; } static WEBP_INLINE uint32_t ClampedAddSubtractHalf(uint32_t c0, uint32_t c1, uint32_t c2) { int temp0, temp1, temp2, temp3, temp4, temp5; __asm__ volatile ( "adduh.qb %[temp5], %[c0], %[c1] \n\t" "preceu.ph.qbr %[temp3], %[c2] \n\t" "preceu.ph.qbr %[temp1], %[temp5] \n\t" "preceu.ph.qbl %[temp2], %[temp5] \n\t" "preceu.ph.qbl %[temp4], %[c2] \n\t" "subq.ph %[temp3], %[temp1], %[temp3] \n\t" "subq.ph %[temp4], %[temp2], %[temp4] \n\t" "shrl.ph %[temp5], %[temp3], 15 \n\t" "shrl.ph %[temp0], %[temp4], 15 \n\t" "addq.ph %[temp3], %[temp3], %[temp5] \n\t" "addq.ph %[temp4], %[temp0], %[temp4] \n\t" "shra.ph %[temp3], %[temp3], 1 \n\t" "shra.ph %[temp4], %[temp4], 1 \n\t" "addq.ph %[temp1], %[temp1], %[temp3] \n\t" "addq.ph %[temp2], %[temp2], %[temp4] \n\t" "shll_s.ph %[temp1], %[temp1], 7 \n\t" "shll_s.ph %[temp2], %[temp2], 7 \n\t" "precrqu_s.qb.ph %[temp1], %[temp2], %[temp1] \n\t" : [temp0]"=r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=r"(temp4), [temp5]"=&r"(temp5) : [c0]"r"(c0), [c1]"r"(c1), [c2]"r"(c2) : "memory" ); return temp1; } static void SubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixels) { uint32_t temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; uint32_t* const p_loop1_end = argb_data + (num_pixels & ~3); uint32_t* const p_loop2_end = p_loop1_end + (num_pixels & 3); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "beq %[argb_data], %[p_loop1_end], 3f \n\t" " nop \n\t" "0: \n\t" "lw %[temp0], 0(%[argb_data]) \n\t" "lw %[temp1], 4(%[argb_data]) \n\t" "lw %[temp2], 8(%[argb_data]) \n\t" "lw %[temp3], 12(%[argb_data]) \n\t" "ext %[temp4], %[temp0], 8, 8 \n\t" "ext %[temp5], %[temp1], 8, 8 \n\t" "ext %[temp6], %[temp2], 8, 8 \n\t" "ext %[temp7], %[temp3], 8, 8 \n\t" "addiu %[argb_data], %[argb_data], 16 \n\t" "replv.ph %[temp4], %[temp4] \n\t" "replv.ph %[temp5], %[temp5] \n\t" "replv.ph %[temp6], %[temp6] \n\t" "replv.ph %[temp7], %[temp7] \n\t" "subu.qb %[temp0], %[temp0], %[temp4] \n\t" "subu.qb %[temp1], %[temp1], %[temp5] \n\t" "subu.qb %[temp2], %[temp2], %[temp6] \n\t" "subu.qb %[temp3], %[temp3], %[temp7] \n\t" "sw %[temp0], -16(%[argb_data]) \n\t" "sw %[temp1], -12(%[argb_data]) \n\t" "sw %[temp2], -8(%[argb_data]) \n\t" "bne %[argb_data], %[p_loop1_end], 0b \n\t" " sw %[temp3], -4(%[argb_data]) \n\t" "3: \n\t" "beq %[argb_data], %[p_loop2_end], 2f \n\t" " nop \n\t" "1: \n\t" "lw %[temp0], 0(%[argb_data]) \n\t" "addiu %[argb_data], %[argb_data], 4 \n\t" "ext %[temp4], %[temp0], 8, 8 \n\t" "replv.ph %[temp4], %[temp4] \n\t" "subu.qb %[temp0], %[temp0], %[temp4] \n\t" "bne %[argb_data], %[p_loop2_end], 1b \n\t" " sw %[temp0], -4(%[argb_data]) \n\t" "2: \n\t" ".set pop \n\t" : [argb_data]"+&r"(argb_data), [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp6]"=&r"(temp6), [temp7]"=&r"(temp7) : [p_loop1_end]"r"(p_loop1_end), [p_loop2_end]"r"(p_loop2_end) : "memory" ); } static WEBP_INLINE uint32_t Select(uint32_t a, uint32_t b, uint32_t c) { int temp0, temp1, temp2, temp3, temp4, temp5; __asm__ volatile ( "cmpgdu.lt.qb %[temp1], %[c], %[b] \n\t" "pick.qb %[temp1], %[b], %[c] \n\t" "pick.qb %[temp2], %[c], %[b] \n\t" "cmpgdu.lt.qb %[temp4], %[c], %[a] \n\t" "pick.qb %[temp4], %[a], %[c] \n\t" "pick.qb %[temp5], %[c], %[a] \n\t" "subu.qb %[temp3], %[temp1], %[temp2] \n\t" "subu.qb %[temp0], %[temp4], %[temp5] \n\t" "raddu.w.qb %[temp3], %[temp3] \n\t" "raddu.w.qb %[temp0], %[temp0] \n\t" "subu %[temp3], %[temp3], %[temp0] \n\t" "slti %[temp0], %[temp3], 0x1 \n\t" "movz %[a], %[b], %[temp0] \n\t" : [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp0]"=&r"(temp0), [a]"+&r"(a) : [b]"r"(b), [c]"r"(c) ); return a; } static uint32_t Predictor11(uint32_t left, const uint32_t* const top) { return Select(top[0], left, top[-1]); } static uint32_t Predictor12(uint32_t left, const uint32_t* const top) { return ClampedAddSubtractFull(left, top[0], top[-1]); } static uint32_t Predictor13(uint32_t left, const uint32_t* const top) { return ClampedAddSubtractHalf(left, top[0], top[-1]); } static WEBP_INLINE uint32_t ColorTransformDelta(int8_t color_pred, int8_t color) { return (uint32_t)((int)(color_pred) * color) >> 5; } static void TransformColor(const VP8LMultipliers* const m, uint32_t* data, int num_pixels) { int temp0, temp1, temp2, temp3, temp4, temp5; uint32_t argb, argb1, new_red, new_red1; const uint32_t G_to_R = m->green_to_red_; const uint32_t G_to_B = m->green_to_blue_; const uint32_t R_to_B = m->red_to_blue_; uint32_t* const p_loop_end = data + (num_pixels & ~1); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "beq %[data], %[p_loop_end], 1f \n\t" " nop \n\t" "replv.ph %[temp0], %[G_to_R] \n\t" "replv.ph %[temp1], %[G_to_B] \n\t" "replv.ph %[temp2], %[R_to_B] \n\t" "shll.ph %[temp0], %[temp0], 8 \n\t" "shll.ph %[temp1], %[temp1], 8 \n\t" "shll.ph %[temp2], %[temp2], 8 \n\t" "shra.ph %[temp0], %[temp0], 8 \n\t" "shra.ph %[temp1], %[temp1], 8 \n\t" "shra.ph %[temp2], %[temp2], 8 \n\t" "0: \n\t" "lw %[argb], 0(%[data]) \n\t" "lw %[argb1], 4(%[data]) \n\t" "lhu %[new_red], 2(%[data]) \n\t" "lhu %[new_red1], 6(%[data]) \n\t" "precrq.qb.ph %[temp3], %[argb], %[argb1] \n\t" "precr.qb.ph %[temp4], %[argb], %[argb1] \n\t" "preceu.ph.qbra %[temp3], %[temp3] \n\t" "preceu.ph.qbla %[temp4], %[temp4] \n\t" "shll.ph %[temp3], %[temp3], 8 \n\t" "shll.ph %[temp4], %[temp4], 8 \n\t" "shra.ph %[temp3], %[temp3], 8 \n\t" "shra.ph %[temp4], %[temp4], 8 \n\t" "mul.ph %[temp5], %[temp3], %[temp0] \n\t" "mul.ph %[temp3], %[temp3], %[temp1] \n\t" "mul.ph %[temp4], %[temp4], %[temp2] \n\t" "addiu %[data], %[data], 8 \n\t" "ins %[new_red1], %[new_red], 16, 16 \n\t" "ins %[argb1], %[argb], 16, 16 \n\t" "shra.ph %[temp5], %[temp5], 5 \n\t" "shra.ph %[temp3], %[temp3], 5 \n\t" "shra.ph %[temp4], %[temp4], 5 \n\t" "subu.ph %[new_red1], %[new_red1], %[temp5] \n\t" "subu.ph %[argb1], %[argb1], %[temp3] \n\t" "preceu.ph.qbra %[temp5], %[new_red1] \n\t" "subu.ph %[argb1], %[argb1], %[temp4] \n\t" "preceu.ph.qbra %[temp3], %[argb1] \n\t" "sb %[temp5], -2(%[data]) \n\t" "sb %[temp3], -4(%[data]) \n\t" "sra %[temp5], %[temp5], 16 \n\t" "sra %[temp3], %[temp3], 16 \n\t" "sb %[temp5], -6(%[data]) \n\t" "bne %[data], %[p_loop_end], 0b \n\t" " sb %[temp3], -8(%[data]) \n\t" "1: \n\t" ".set pop \n\t" : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [new_red1]"=&r"(new_red1), [new_red]"=&r"(new_red), [argb]"=&r"(argb), [argb1]"=&r"(argb1), [data]"+&r"(data) : [G_to_R]"r"(G_to_R), [R_to_B]"r"(R_to_B), [G_to_B]"r"(G_to_B), [p_loop_end]"r"(p_loop_end) : "memory", "hi", "lo" ); if (num_pixels & 1) { const uint32_t argb_ = data[0]; const uint32_t green = argb_ >> 8; const uint32_t red = argb_ >> 16; uint32_t new_blue = argb_; new_red = red; new_red -= ColorTransformDelta(m->green_to_red_, green); new_red &= 0xff; new_blue -= ColorTransformDelta(m->green_to_blue_, green); new_blue -= ColorTransformDelta(m->red_to_blue_, red); new_blue &= 0xff; data[0] = (argb_ & 0xff00ff00u) | (new_red << 16) | (new_blue); } } #endif // WEBP_USE_MIPS_DSP_R2 //------------------------------------------------------------------------------ extern void VP8LDspInitMIPSdspR2(void); void VP8LDspInitMIPSdspR2(void) { #if defined(WEBP_USE_MIPS_DSP_R2) VP8LMapColor32b = MapARGB; VP8LMapColor8b = MapAlpha; VP8LPredictors[11] = Predictor11; VP8LPredictors[12] = Predictor12; VP8LPredictors[13] = Predictor13; VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed; VP8LTransformColor = TransformColor; #endif // WEBP_USE_MIPS_DSP_R2 } //------------------------------------------------------------------------------