| // 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 "src/dsp/dsp.h" |
| |
| #if defined(WEBP_USE_MIPS_DSP_R2) |
| |
| #include "src/dsp/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" \ |
| "subu %[temp1], %[temp1], %[t_con_6] \n\t" \ |
| "subu %[temp3], %[temp3], %[t_con_7] \n\t" \ |
| "addu %[temp2], %[temp2], %[temp3] \n\t" \ |
| "subu %[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], 17 \n\t" \ |
| "shll_s.w %[temp6], %[temp6], 17 \n\t" \ |
| ".if " #K " \n\t" \ |
| "mul %[temp0], %[t_con_5], %[temp0] \n\t" \ |
| ".endif \n\t" \ |
| "shll_s.w %[temp7], %[temp7], 17 \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 = 26149; \ |
| const int t_con_2 = 13320; \ |
| const int t_con_3 = 6419; \ |
| const int t_con_4 = 33050; \ |
| const int t_con_5 = 19077; \ |
| const int t_con_6 = 14234; \ |
| const int t_con_7 = 8708; \ |
| const int t_con_8 = 17685; \ |
| 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_MIPSdspR2, 3, 0, 1, 2, 0) |
| ROW_FUNC(YuvToRgbaRow_MIPSdspR2, 4, 0, 1, 2, 3) |
| ROW_FUNC(YuvToBgrRow_MIPSdspR2, 3, 2, 1, 0, 0) |
| ROW_FUNC(YuvToBgraRow_MIPSdspR2, 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_MIPSdspR2; |
| WebPSamplers[MODE_RGBA] = YuvToRgbaRow_MIPSdspR2; |
| WebPSamplers[MODE_BGR] = YuvToBgrRow_MIPSdspR2; |
| WebPSamplers[MODE_BGRA] = YuvToBgraRow_MIPSdspR2; |
| } |
| |
| #else // !WEBP_USE_MIPS_DSP_R2 |
| |
| WEBP_DSP_INIT_STUB(WebPInitSamplersMIPSdspR2) |
| |
| #endif // WEBP_USE_MIPS_DSP_R2 |
