| // 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 "third_party/chromium_headless/libwebp/dsp/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 |
