// Copyright 2015 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 transform methods for lossless encoder. // // Author(s): Djordje Pesut ([email protected]) // Jovan Zelincevic ([email protected]) #include "src/dsp/dsp.h" #if defined(WEBP_USE_MIPS_DSP_R2) #include "src/dsp/lossless.h" static void SubtractGreenFromBlueAndRed_MIPSdspR2(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 ColorTransformDelta(int8_t color_pred, int8_t color) { return (uint32_t)((int)(color_pred) * color) >> 5; } static void TransformColor_MIPSdspR2(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); } } static WEBP_INLINE uint8_t TransformColorBlue(uint8_t green_to_blue, uint8_t red_to_blue, uint32_t argb) { const uint32_t green = argb >> 8; const uint32_t red = argb >> 16; uint8_t new_blue = argb; new_blue -= ColorTransformDelta(green_to_blue, green); new_blue -= ColorTransformDelta(red_to_blue, red); return (new_blue & 0xff); } static void CollectColorBlueTransforms_MIPSdspR2(const uint32_t* argb, int stride, int tile_width, int tile_height, int green_to_blue, int red_to_blue, int histo[]) { const int rtb = (red_to_blue << 16) | (red_to_blue & 0xffff); const int gtb = (green_to_blue << 16) | (green_to_blue & 0xffff); const uint32_t mask = 0xff00ffu; while (tile_height-- > 0) { int x; const uint32_t* p_argb = argb; argb += stride; for (x = 0; x < (tile_width >> 1); ++x) { int temp0, temp1, temp2, temp3, temp4, temp5, temp6; __asm__ volatile ( "lw %[temp0], 0(%[p_argb]) \n\t" "lw %[temp1], 4(%[p_argb]) \n\t" "precr.qb.ph %[temp2], %[temp0], %[temp1] \n\t" "ins %[temp1], %[temp0], 16, 16 \n\t" "shra.ph %[temp2], %[temp2], 8 \n\t" "shra.ph %[temp3], %[temp1], 8 \n\t" "mul.ph %[temp5], %[temp2], %[rtb] \n\t" "mul.ph %[temp6], %[temp3], %[gtb] \n\t" "and %[temp4], %[temp1], %[mask] \n\t" "addiu %[p_argb], %[p_argb], 8 \n\t" "shra.ph %[temp5], %[temp5], 5 \n\t" "shra.ph %[temp6], %[temp6], 5 \n\t" "subu.qb %[temp2], %[temp4], %[temp5] \n\t" "subu.qb %[temp2], %[temp2], %[temp6] \n\t" : [p_argb]"+&r"(p_argb), [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), [temp6]"=&r"(temp6) : [rtb]"r"(rtb), [gtb]"r"(gtb), [mask]"r"(mask) : "memory", "hi", "lo" ); ++histo[(uint8_t)(temp2 >> 16)]; ++histo[(uint8_t)temp2]; } if (tile_width & 1) { ++histo[TransformColorBlue(green_to_blue, red_to_blue, *p_argb)]; } } } static WEBP_INLINE uint8_t TransformColorRed(uint8_t green_to_red, uint32_t argb) { const uint32_t green = argb >> 8; uint32_t new_red = argb >> 16; new_red -= ColorTransformDelta(green_to_red, green); return (new_red & 0xff); } static void CollectColorRedTransforms_MIPSdspR2(const uint32_t* argb, int stride, int tile_width, int tile_height, int green_to_red, int histo[]) { const int gtr = (green_to_red << 16) | (green_to_red & 0xffff); while (tile_height-- > 0) { int x; const uint32_t* p_argb = argb; argb += stride; for (x = 0; x < (tile_width >> 1); ++x) { int temp0, temp1, temp2, temp3, temp4; __asm__ volatile ( "lw %[temp0], 0(%[p_argb]) \n\t" "lw %[temp1], 4(%[p_argb]) \n\t" "precrq.ph.w %[temp4], %[temp0], %[temp1] \n\t" "ins %[temp1], %[temp0], 16, 16 \n\t" "shra.ph %[temp3], %[temp1], 8 \n\t" "mul.ph %[temp2], %[temp3], %[gtr] \n\t" "addiu %[p_argb], %[p_argb], 8 \n\t" "shra.ph %[temp2], %[temp2], 5 \n\t" "subu.qb %[temp2], %[temp4], %[temp2] \n\t" : [p_argb]"+&r"(p_argb), [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), [temp3]"=&r"(temp3), [temp4]"=&r"(temp4) : [gtr]"r"(gtr) : "memory", "hi", "lo" ); ++histo[(uint8_t)(temp2 >> 16)]; ++histo[(uint8_t)temp2]; } if (tile_width & 1) { ++histo[TransformColorRed(green_to_red, *p_argb)]; } } } //------------------------------------------------------------------------------ // Entry point extern void VP8LEncDspInitMIPSdspR2(void); WEBP_TSAN_IGNORE_FUNCTION void VP8LEncDspInitMIPSdspR2(void) { VP8LSubtractGreenFromBlueAndRed = SubtractGreenFromBlueAndRed_MIPSdspR2; VP8LTransformColor = TransformColor_MIPSdspR2; VP8LCollectColorBlueTransforms = CollectColorBlueTransforms_MIPSdspR2; VP8LCollectColorRedTransforms = CollectColorRedTransforms_MIPSdspR2; } #else // !WEBP_USE_MIPS_DSP_R2 WEBP_DSP_INIT_STUB(VP8LEncDspInitMIPSdspR2) #endif // WEBP_USE_MIPS_DSP_R2
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