ee3cf211c6
Note that there are two Godot-specific changes made to libwebp for the javascript/HTML5 platform. They are documented in the README.md.
111 lines
4.9 KiB
C
111 lines
4.9 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.
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// ARGB making functions (mips version).
|
|
//
|
|
// Author: Djordje Pesut (djordje.pesut@imgtec.com)
|
|
|
|
#include "./dsp.h"
|
|
|
|
#if defined(WEBP_USE_MIPS_DSP_R2)
|
|
|
|
static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g,
|
|
const uint8_t* b, int len, uint32_t* out) {
|
|
int temp0, temp1, temp2, temp3, offset;
|
|
const int rest = len & 1;
|
|
const uint32_t* const loop_end = out + len - rest;
|
|
const int step = 4;
|
|
__asm__ volatile (
|
|
"xor %[offset], %[offset], %[offset] \n\t"
|
|
"beq %[loop_end], %[out], 0f \n\t"
|
|
"2: \n\t"
|
|
"lbux %[temp0], %[offset](%[a]) \n\t"
|
|
"lbux %[temp1], %[offset](%[r]) \n\t"
|
|
"lbux %[temp2], %[offset](%[g]) \n\t"
|
|
"lbux %[temp3], %[offset](%[b]) \n\t"
|
|
"ins %[temp1], %[temp0], 16, 16 \n\t"
|
|
"ins %[temp3], %[temp2], 16, 16 \n\t"
|
|
"addiu %[out], %[out], 4 \n\t"
|
|
"precr.qb.ph %[temp0], %[temp1], %[temp3] \n\t"
|
|
"sw %[temp0], -4(%[out]) \n\t"
|
|
"addu %[offset], %[offset], %[step] \n\t"
|
|
"bne %[loop_end], %[out], 2b \n\t"
|
|
"0: \n\t"
|
|
"beq %[rest], $zero, 1f \n\t"
|
|
"lbux %[temp0], %[offset](%[a]) \n\t"
|
|
"lbux %[temp1], %[offset](%[r]) \n\t"
|
|
"lbux %[temp2], %[offset](%[g]) \n\t"
|
|
"lbux %[temp3], %[offset](%[b]) \n\t"
|
|
"ins %[temp1], %[temp0], 16, 16 \n\t"
|
|
"ins %[temp3], %[temp2], 16, 16 \n\t"
|
|
"precr.qb.ph %[temp0], %[temp1], %[temp3] \n\t"
|
|
"sw %[temp0], 0(%[out]) \n\t"
|
|
"1: \n\t"
|
|
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
|
|
[temp3]"=&r"(temp3), [offset]"=&r"(offset), [out]"+&r"(out)
|
|
: [a]"r"(a), [r]"r"(r), [g]"r"(g), [b]"r"(b), [step]"r"(step),
|
|
[loop_end]"r"(loop_end), [rest]"r"(rest)
|
|
: "memory"
|
|
);
|
|
}
|
|
|
|
static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b,
|
|
int len, int step, uint32_t* out) {
|
|
int temp0, temp1, temp2, offset;
|
|
const int rest = len & 1;
|
|
const int a = 0xff;
|
|
const uint32_t* const loop_end = out + len - rest;
|
|
__asm__ volatile (
|
|
"xor %[offset], %[offset], %[offset] \n\t"
|
|
"beq %[loop_end], %[out], 0f \n\t"
|
|
"2: \n\t"
|
|
"lbux %[temp0], %[offset](%[r]) \n\t"
|
|
"lbux %[temp1], %[offset](%[g]) \n\t"
|
|
"lbux %[temp2], %[offset](%[b]) \n\t"
|
|
"ins %[temp0], %[a], 16, 16 \n\t"
|
|
"ins %[temp2], %[temp1], 16, 16 \n\t"
|
|
"addiu %[out], %[out], 4 \n\t"
|
|
"precr.qb.ph %[temp0], %[temp0], %[temp2] \n\t"
|
|
"sw %[temp0], -4(%[out]) \n\t"
|
|
"addu %[offset], %[offset], %[step] \n\t"
|
|
"bne %[loop_end], %[out], 2b \n\t"
|
|
"0: \n\t"
|
|
"beq %[rest], $zero, 1f \n\t"
|
|
"lbux %[temp0], %[offset](%[r]) \n\t"
|
|
"lbux %[temp1], %[offset](%[g]) \n\t"
|
|
"lbux %[temp2], %[offset](%[b]) \n\t"
|
|
"ins %[temp0], %[a], 16, 16 \n\t"
|
|
"ins %[temp2], %[temp1], 16, 16 \n\t"
|
|
"precr.qb.ph %[temp0], %[temp0], %[temp2] \n\t"
|
|
"sw %[temp0], 0(%[out]) \n\t"
|
|
"1: \n\t"
|
|
: [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),
|
|
[offset]"=&r"(offset), [out]"+&r"(out)
|
|
: [a]"r"(a), [r]"r"(r), [g]"r"(g), [b]"r"(b), [step]"r"(step),
|
|
[loop_end]"r"(loop_end), [rest]"r"(rest)
|
|
: "memory"
|
|
);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Entry point
|
|
|
|
extern void VP8EncDspARGBInitMIPSdspR2(void);
|
|
|
|
WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInitMIPSdspR2(void) {
|
|
VP8PackARGB = PackARGB;
|
|
VP8PackRGB = PackRGB;
|
|
}
|
|
|
|
#else // !WEBP_USE_MIPS_DSP_R2
|
|
|
|
WEBP_DSP_INIT_STUB(VP8EncDspARGBInitMIPSdspR2)
|
|
|
|
#endif // WEBP_USE_MIPS_DSP_R2
|