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Unified Diff: third_party/libwebp/dsp/lossless_enc_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/lossless_enc_mips_dsp_r2.c
diff --git a/third_party/libwebp/dsp/lossless_enc_mips_dsp_r2.c b/third_party/libwebp/dsp/lossless_enc_mips_dsp_r2.c
new file mode 100644
index 0000000000000000000000000000000000000000..0abf3c4f366db5b7668ea3bda9a259d3b9cb2adf
--- /dev/null
+++ b/third_party/libwebp/dsp/lossless_enc_mips_dsp_r2.c
@@ -0,0 +1,275 @@
+// 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 (djordje.pesut@imgtec.com)
+// Jovan Zelincevic (jovan.zelincevic@imgtec.com)
+
+#include "./dsp.h"
+
+#if defined(WEBP_USE_MIPS_DSP_R2)
+
+#include "./lossless.h"
+
+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 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);
+ }
+}
+
+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(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(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;
+ VP8LTransformColor = TransformColor;
+ VP8LCollectColorBlueTransforms = CollectColorBlueTransforms;
+ VP8LCollectColorRedTransforms = CollectColorRedTransforms;
+}
+
+#else // !WEBP_USE_MIPS_DSP_R2
+
+WEBP_DSP_INIT_STUB(VP8LEncDspInitMIPSdspR2)
+
+#endif // WEBP_USE_MIPS_DSP_R2
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