| /* |
| * WMV2 - DSP functions Loongson MMI-optimized |
| * |
| * Copyright (c) 2016 Zhou Xiaoyong <zhouxiaoyong@loongson.cn> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "constants.h" |
| #include "wmv2dsp_mips.h" |
| #include "libavutil/mips/mmiutils.h" |
| |
| #define W0 2048 |
| #define W1 2841 /* 2048*sqrt (2)*cos (1*pi/16) */ |
| #define W2 2676 /* 2048*sqrt (2)*cos (2*pi/16) */ |
| #define W3 2408 /* 2048*sqrt (2)*cos (3*pi/16) */ |
| #define W4 2048 /* 2048*sqrt (2)*cos (4*pi/16) */ |
| #define W5 1609 /* 2048*sqrt (2)*cos (5*pi/16) */ |
| #define W6 1108 /* 2048*sqrt (2)*cos (6*pi/16) */ |
| #define W7 565 /* 2048*sqrt (2)*cos (7*pi/16) */ |
| |
| static void wmv2_idct_row_mmi(short * b) |
| { |
| int s1, s2; |
| int a0, a1, a2, a3, a4, a5, a6, a7; |
| |
| /* step 1 */ |
| a0 = W0 * b[0] + W0 * b[4]; |
| a1 = W1 * b[1] + W7 * b[7]; |
| a2 = W2 * b[2] + W6 * b[6]; |
| a3 = W3 * b[5] - W5 * b[3]; |
| a4 = W0 * b[0] - W0 * b[4]; |
| a5 = W5 * b[5] + W3 * b[3]; |
| a6 = W6 * b[2] - W2 * b[6]; |
| a7 = W7 * b[1] - W1 * b[7]; |
| |
| /* step 2 */ |
| s1 = (181 * (a1 - a5 + a7 - a3) + 128) >> 8; // 1, 3, 5, 7 |
| s2 = (181 * (a1 - a5 - a7 + a3) + 128) >> 8; |
| |
| /* step 3 */ |
| b[0] = (a0 + a2 + a1 + a5 + 128) >> 8; |
| b[1] = (a4 + a6 + s1 + 128) >> 8; |
| b[2] = (a4 - a6 + s2 + 128) >> 8; |
| b[3] = (a0 - a2 + a7 + a3 + 128) >> 8; |
| b[4] = (a0 - a2 - a7 - a3 + 128) >> 8; |
| b[5] = (a4 - a6 - s2 + 128) >> 8; |
| b[6] = (a4 + a6 - s1 + 128) >> 8; |
| b[7] = (a0 + a2 - a1 - a5 + 128) >> 8; |
| } |
| |
| static void wmv2_idct_col_mmi(short * b) |
| { |
| int s1, s2; |
| int a0, a1, a2, a3, a4, a5, a6, a7; |
| |
| /* step 1, with extended precision */ |
| a0 = (W0 * b[ 0] + W0 * b[32] ) >> 3; |
| a1 = (W1 * b[ 8] + W7 * b[56] + 4) >> 3; |
| a2 = (W2 * b[16] + W6 * b[48] + 4) >> 3; |
| a3 = (W3 * b[40] - W5 * b[24] + 4) >> 3; |
| a4 = (W0 * b[ 0] - W0 * b[32] ) >> 3; |
| a5 = (W5 * b[40] + W3 * b[24] + 4) >> 3; |
| a6 = (W6 * b[16] - W2 * b[48] + 4) >> 3; |
| a7 = (W7 * b[ 8] - W1 * b[56] + 4) >> 3; |
| |
| /* step 2 */ |
| s1 = (181 * (a1 - a5 + a7 - a3) + 128) >> 8; |
| s2 = (181 * (a1 - a5 - a7 + a3) + 128) >> 8; |
| |
| /* step 3 */ |
| b[ 0] = (a0 + a2 + a1 + a5 + 8192) >> 14; |
| b[ 8] = (a4 + a6 + s1 + 8192) >> 14; |
| b[16] = (a4 - a6 + s2 + 8192) >> 14; |
| b[24] = (a0 - a2 + a7 + a3 + 8192) >> 14; |
| |
| b[32] = (a0 - a2 - a7 - a3 + 8192) >> 14; |
| b[40] = (a4 - a6 - s2 + 8192) >> 14; |
| b[48] = (a4 + a6 - s1 + 8192) >> 14; |
| b[56] = (a0 + a2 - a1 - a5 + 8192) >> 14; |
| } |
| |
| void ff_wmv2_idct_add_mmi(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
| { |
| int i; |
| double ftmp[11]; |
| |
| for (i = 0; i < 64; i += 8) |
| wmv2_idct_row_mmi(block + i); |
| for (i = 0; i < 8; i++) |
| wmv2_idct_col_mmi(block + i); |
| |
| __asm__ volatile ( |
| "xor %[ftmp0], %[ftmp0], %[ftmp0] \n\t" |
| |
| // low 4 loop |
| MMI_LDC1(%[ftmp1], %[block], 0x00) |
| MMI_LDC1(%[ftmp2], %[block], 0x08) |
| MMI_LDC1(%[ftmp3], %[block], 0x10) |
| MMI_LDC1(%[ftmp4], %[block], 0x18) |
| MMI_LDC1(%[ftmp5], %[block], 0x20) |
| MMI_LDC1(%[ftmp6], %[block], 0x28) |
| MMI_LDC1(%[ftmp7], %[block], 0x30) |
| MMI_LDC1(%[ftmp8], %[block], 0x38) |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp1], %[ftmp1], %[ftmp9] \n\t" |
| "paddh %[ftmp2], %[ftmp2], %[ftmp10] \n\t" |
| "packushb %[ftmp1], %[ftmp1], %[ftmp2] \n\t" |
| MMI_SDC1(%[ftmp1], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp3], %[ftmp3], %[ftmp9] \n\t" |
| "paddh %[ftmp4], %[ftmp4], %[ftmp10] \n\t" |
| "packushb %[ftmp3], %[ftmp3], %[ftmp4] \n\t" |
| MMI_SDC1(%[ftmp3], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp5], %[ftmp5], %[ftmp9] \n\t" |
| "paddh %[ftmp6], %[ftmp6], %[ftmp10] \n\t" |
| "packushb %[ftmp5], %[ftmp5], %[ftmp6] \n\t" |
| MMI_SDC1(%[ftmp5], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp7], %[ftmp7], %[ftmp9] \n\t" |
| "paddh %[ftmp8], %[ftmp8], %[ftmp10] \n\t" |
| "packushb %[ftmp7], %[ftmp7], %[ftmp8] \n\t" |
| MMI_SDC1(%[ftmp7], %[dest], 0x00) |
| |
| PTR_ADDIU "%[block], %[block], 0x40 \n\t" |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| // high 4 loop |
| MMI_LDC1(%[ftmp1], %[block], 0x00) |
| MMI_LDC1(%[ftmp2], %[block], 0x08) |
| MMI_LDC1(%[ftmp3], %[block], 0x10) |
| MMI_LDC1(%[ftmp4], %[block], 0x18) |
| MMI_LDC1(%[ftmp5], %[block], 0x20) |
| MMI_LDC1(%[ftmp6], %[block], 0x28) |
| MMI_LDC1(%[ftmp7], %[block], 0x30) |
| MMI_LDC1(%[ftmp8], %[block], 0x38) |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp1], %[ftmp1], %[ftmp9] \n\t" |
| "paddh %[ftmp2], %[ftmp2], %[ftmp10] \n\t" |
| "packushb %[ftmp1], %[ftmp1], %[ftmp2] \n\t" |
| MMI_SDC1(%[ftmp1], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp3], %[ftmp3], %[ftmp9] \n\t" |
| "paddh %[ftmp4], %[ftmp4], %[ftmp10] \n\t" |
| "packushb %[ftmp3], %[ftmp3], %[ftmp4] \n\t" |
| MMI_SDC1(%[ftmp3], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp5], %[ftmp5], %[ftmp9] \n\t" |
| "paddh %[ftmp6], %[ftmp6], %[ftmp10] \n\t" |
| "packushb %[ftmp5], %[ftmp5], %[ftmp6] \n\t" |
| MMI_SDC1(%[ftmp5], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| MMI_LDC1(%[ftmp9], %[dest], 0x00) |
| "punpckhbh %[ftmp10], %[ftmp9], %[ftmp0] \n\t" |
| "punpcklbh %[ftmp9], %[ftmp9], %[ftmp0] \n\t" |
| "paddh %[ftmp7], %[ftmp7], %[ftmp9] \n\t" |
| "paddh %[ftmp8], %[ftmp8], %[ftmp10] \n\t" |
| "packushb %[ftmp7], %[ftmp7], %[ftmp8] \n\t" |
| MMI_SDC1(%[ftmp7], %[dest], 0x00) |
| : [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]), |
| [ftmp2]"=&f"(ftmp[2]), [ftmp3]"=&f"(ftmp[3]), |
| [ftmp4]"=&f"(ftmp[4]), [ftmp5]"=&f"(ftmp[5]), |
| [ftmp6]"=&f"(ftmp[6]), [ftmp7]"=&f"(ftmp[7]), |
| [ftmp8]"=&f"(ftmp[8]), [ftmp9]"=&f"(ftmp[9]), |
| [ftmp10]"=&f"(ftmp[10]), |
| [block]"+&r"(block), [dest]"+&r"(dest) |
| : [line_size]"r"((mips_reg)line_size) |
| : "memory" |
| ); |
| } |
| |
| void ff_wmv2_idct_put_mmi(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
| { |
| int i; |
| double ftmp[8]; |
| |
| for (i = 0; i < 64; i += 8) |
| wmv2_idct_row_mmi(block + i); |
| for (i = 0; i < 8; i++) |
| wmv2_idct_col_mmi(block + i); |
| |
| __asm__ volatile ( |
| // low 4 loop |
| MMI_LDC1(%[ftmp0], %[block], 0x00) |
| MMI_LDC1(%[ftmp1], %[block], 0x08) |
| MMI_LDC1(%[ftmp2], %[block], 0x10) |
| MMI_LDC1(%[ftmp3], %[block], 0x18) |
| MMI_LDC1(%[ftmp4], %[block], 0x20) |
| MMI_LDC1(%[ftmp5], %[block], 0x28) |
| MMI_LDC1(%[ftmp6], %[block], 0x30) |
| MMI_LDC1(%[ftmp7], %[block], 0x38) |
| "packushb %[ftmp0], %[ftmp0], %[ftmp1] \n\t" |
| "packushb %[ftmp2], %[ftmp2], %[ftmp3] \n\t" |
| "packushb %[ftmp4], %[ftmp4], %[ftmp5] \n\t" |
| "packushb %[ftmp6], %[ftmp6], %[ftmp7] \n\t" |
| MMI_SDC1(%[ftmp0], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| MMI_SDC1(%[ftmp2], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| MMI_SDC1(%[ftmp4], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| MMI_SDC1(%[ftmp6], %[dest], 0x00) |
| |
| PTR_ADDIU "%[block], %[block], 0x40 \n\t" |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| |
| // high 4 loop |
| MMI_LDC1(%[ftmp0], %[block], 0x00) |
| MMI_LDC1(%[ftmp1], %[block], 0x08) |
| MMI_LDC1(%[ftmp2], %[block], 0x10) |
| MMI_LDC1(%[ftmp3], %[block], 0x18) |
| MMI_LDC1(%[ftmp4], %[block], 0x20) |
| MMI_LDC1(%[ftmp5], %[block], 0x28) |
| MMI_LDC1(%[ftmp6], %[block], 0x30) |
| MMI_LDC1(%[ftmp7], %[block], 0x38) |
| "packushb %[ftmp0], %[ftmp0], %[ftmp1] \n\t" |
| "packushb %[ftmp2], %[ftmp2], %[ftmp3] \n\t" |
| "packushb %[ftmp4], %[ftmp4], %[ftmp5] \n\t" |
| "packushb %[ftmp6], %[ftmp6], %[ftmp7] \n\t" |
| MMI_SDC1(%[ftmp0], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| MMI_SDC1(%[ftmp2], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| MMI_SDC1(%[ftmp4], %[dest], 0x00) |
| PTR_ADDU "%[dest], %[dest], %[line_size] \n\t" |
| MMI_SDC1(%[ftmp6], %[dest], 0x00) |
| : [ftmp0]"=&f"(ftmp[0]), [ftmp1]"=&f"(ftmp[1]), |
| [ftmp2]"=&f"(ftmp[2]), [ftmp3]"=&f"(ftmp[3]), |
| [ftmp4]"=&f"(ftmp[4]), [ftmp5]"=&f"(ftmp[5]), |
| [ftmp6]"=&f"(ftmp[6]), [ftmp7]"=&f"(ftmp[7]), |
| [block]"+&r"(block), [dest]"+&r"(dest) |
| : [line_size]"r"((mips_reg)line_size) |
| : "memory" |
| ); |
| } |
