135 lines
7.8 KiB
C
135 lines
7.8 KiB
C
// 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 DSPr2 version of YUV to RGB upsampling functions.
|
|
//
|
|
// Author(s): Branimir Vasic (branimir.vasic@imgtec.com)
|
|
// Djordje Pesut (djordje.pesut@imgtec.com)
|
|
|
|
#include "./dsp.h"
|
|
|
|
#if defined(WEBP_USE_MIPS_DSP_R2)
|
|
|
|
#include "./yuv.h"
|
|
|
|
//------------------------------------------------------------------------------
|
|
// simple point-sampling
|
|
|
|
#define ROW_FUNC_PART_1() \
|
|
"lbu %[temp3], 0(%[v]) \n\t" \
|
|
"lbu %[temp4], 0(%[u]) \n\t" \
|
|
"lbu %[temp0], 0(%[y]) \n\t" \
|
|
"mul %[temp1], %[t_con_1], %[temp3] \n\t" \
|
|
"mul %[temp3], %[t_con_2], %[temp3] \n\t" \
|
|
"mul %[temp2], %[t_con_3], %[temp4] \n\t" \
|
|
"mul %[temp4], %[t_con_4], %[temp4] \n\t" \
|
|
"mul %[temp0], %[t_con_5], %[temp0] \n\t" \
|
|
"addu %[temp1], %[temp1], %[t_con_6] \n\t" \
|
|
"subu %[temp3], %[temp3], %[t_con_7] \n\t" \
|
|
"addu %[temp2], %[temp2], %[temp3] \n\t" \
|
|
"addu %[temp4], %[temp4], %[t_con_8] \n\t" \
|
|
|
|
#define ROW_FUNC_PART_2(R, G, B, K) \
|
|
"addu %[temp5], %[temp0], %[temp1] \n\t" \
|
|
"subu %[temp6], %[temp0], %[temp2] \n\t" \
|
|
"addu %[temp7], %[temp0], %[temp4] \n\t" \
|
|
".if " #K " \n\t" \
|
|
"lbu %[temp0], 1(%[y]) \n\t" \
|
|
".endif \n\t" \
|
|
"shll_s.w %[temp5], %[temp5], 9 \n\t" \
|
|
"shll_s.w %[temp6], %[temp6], 9 \n\t" \
|
|
".if " #K " \n\t" \
|
|
"mul %[temp0], %[t_con_5], %[temp0] \n\t" \
|
|
".endif \n\t" \
|
|
"shll_s.w %[temp7], %[temp7], 9 \n\t" \
|
|
"precrqu_s.qb.ph %[temp5], %[temp5], $zero \n\t" \
|
|
"precrqu_s.qb.ph %[temp6], %[temp6], $zero \n\t" \
|
|
"precrqu_s.qb.ph %[temp7], %[temp7], $zero \n\t" \
|
|
"srl %[temp5], %[temp5], 24 \n\t" \
|
|
"srl %[temp6], %[temp6], 24 \n\t" \
|
|
"srl %[temp7], %[temp7], 24 \n\t" \
|
|
"sb %[temp5], " #R "(%[dst]) \n\t" \
|
|
"sb %[temp6], " #G "(%[dst]) \n\t" \
|
|
"sb %[temp7], " #B "(%[dst]) \n\t" \
|
|
|
|
#define ASM_CLOBBER_LIST() \
|
|
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), \
|
|
[temp3]"=&r"(temp3), [temp4]"=&r"(temp4), [temp5]"=&r"(temp5), \
|
|
[temp6]"=&r"(temp6), [temp7]"=&r"(temp7) \
|
|
: [t_con_1]"r"(t_con_1), [t_con_2]"r"(t_con_2), [t_con_3]"r"(t_con_3), \
|
|
[t_con_4]"r"(t_con_4), [t_con_5]"r"(t_con_5), [t_con_6]"r"(t_con_6), \
|
|
[u]"r"(u), [v]"r"(v), [y]"r"(y), [dst]"r"(dst), \
|
|
[t_con_7]"r"(t_con_7), [t_con_8]"r"(t_con_8) \
|
|
: "memory", "hi", "lo" \
|
|
|
|
#define ROW_FUNC(FUNC_NAME, XSTEP, R, G, B, A) \
|
|
static void FUNC_NAME(const uint8_t* y, \
|
|
const uint8_t* u, const uint8_t* v, \
|
|
uint8_t* dst, int len) { \
|
|
int i; \
|
|
uint32_t temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7; \
|
|
const int t_con_1 = kVToR; \
|
|
const int t_con_2 = kVToG; \
|
|
const int t_con_3 = kUToG; \
|
|
const int t_con_4 = kUToB; \
|
|
const int t_con_5 = kYScale; \
|
|
const int t_con_6 = kRCst; \
|
|
const int t_con_7 = kGCst; \
|
|
const int t_con_8 = kBCst; \
|
|
for (i = 0; i < (len >> 1); i++) { \
|
|
__asm__ volatile ( \
|
|
ROW_FUNC_PART_1() \
|
|
ROW_FUNC_PART_2(R, G, B, 1) \
|
|
ROW_FUNC_PART_2(R + XSTEP, G + XSTEP, B + XSTEP, 0) \
|
|
ASM_CLOBBER_LIST() \
|
|
); \
|
|
if (A) dst[A] = dst[A + XSTEP] = 0xff; \
|
|
y += 2; \
|
|
++u; \
|
|
++v; \
|
|
dst += 2 * XSTEP; \
|
|
} \
|
|
if (len & 1) { \
|
|
__asm__ volatile ( \
|
|
ROW_FUNC_PART_1() \
|
|
ROW_FUNC_PART_2(R, G, B, 0) \
|
|
ASM_CLOBBER_LIST() \
|
|
); \
|
|
if (A) dst[A] = 0xff; \
|
|
} \
|
|
}
|
|
|
|
ROW_FUNC(YuvToRgbRow, 3, 0, 1, 2, 0)
|
|
ROW_FUNC(YuvToRgbaRow, 4, 0, 1, 2, 3)
|
|
ROW_FUNC(YuvToBgrRow, 3, 2, 1, 0, 0)
|
|
ROW_FUNC(YuvToBgraRow, 4, 2, 1, 0, 3)
|
|
|
|
#undef ROW_FUNC
|
|
#undef ASM_CLOBBER_LIST
|
|
#undef ROW_FUNC_PART_2
|
|
#undef ROW_FUNC_PART_1
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Entry point
|
|
|
|
extern void WebPInitSamplersMIPSdspR2(void);
|
|
|
|
WEBP_TSAN_IGNORE_FUNCTION void WebPInitSamplersMIPSdspR2(void) {
|
|
WebPSamplers[MODE_RGB] = YuvToRgbRow;
|
|
WebPSamplers[MODE_RGBA] = YuvToRgbaRow;
|
|
WebPSamplers[MODE_BGR] = YuvToBgrRow;
|
|
WebPSamplers[MODE_BGRA] = YuvToBgraRow;
|
|
}
|
|
|
|
#else // !WEBP_USE_MIPS_DSP_R2
|
|
|
|
WEBP_DSP_INIT_STUB(WebPInitSamplersMIPSdspR2)
|
|
|
|
#endif // WEBP_USE_MIPS_DSP_R2
|