mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 1147 to svn://svn.ffmpeg.org/ffmpeg/trunkpull/126/head
Michael Niedermayer
23 years ago
parent
26b35efb3a
commit
05c4072b45
10 changed files with 993 additions and 13 deletions
@ -1,5 +1,26 @@ |
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/*
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* Copyright (c) 2002 Brian Foley |
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* Copyright (c) 2002 Dieter Shirley |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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extern int pix_abs16x16_altivec(uint8_t *pix1, uint8_t *pix2, int line_size); |
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extern int pix_abs8x8_altivec(uint8_t *pix1, uint8_t *pix2, int line_size); |
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extern int pix_sum_altivec(UINT8 * pix, int line_size); |
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extern void diff_pixels_altivec(DCTELEM* block, const UINT8* s1, const UINT8* s2, int stride); |
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extern void get_pixels_altivec(DCTELEM* block, const UINT8 * pixels, int line_size); |
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extern int has_altivec(void); |
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@ -0,0 +1,216 @@ |
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/*
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* Copyright (c) 2001 Michel Lespinasse |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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/*
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* NOTE: This code is based on GPL code from the libmpeg2 project. The |
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* author, Michel Lespinasses, has given explicit permission to release |
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* under LGPL as part of ffmpeg. |
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* |
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*/ |
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/*
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* FFMpeg integration by Dieter Shirley |
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* |
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* This file is a direct copy of the altivec idct module from the libmpeg2 |
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* project. I've deleted all of the libmpeg2 specific code, renamed the functions and |
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* re-ordered the function parameters. The only change to the IDCT function |
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* itself was to factor out the partial transposition, and to perform a full |
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* transpose at the end of the function. |
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*/ |
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#include <stdlib.h> /* malloc(), free() */ |
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#include <string.h> |
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#include "../dsputil.h" |
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#define vector_s16_t vector signed short |
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#define vector_u16_t vector unsigned short |
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#define vector_s8_t vector signed char |
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#define vector_u8_t vector unsigned char |
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#define vector_s32_t vector signed int |
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#define vector_u32_t vector unsigned int |
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#define IDCT_HALF \ |
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/* 1st stage */ \
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t1 = vec_mradds (a1, vx7, vx1 ); \
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t8 = vec_mradds (a1, vx1, vec_subs (zero, vx7)); \
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t7 = vec_mradds (a2, vx5, vx3); \
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t3 = vec_mradds (ma2, vx3, vx5); \
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\
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/* 2nd stage */ \
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t5 = vec_adds (vx0, vx4); \
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t0 = vec_subs (vx0, vx4); \
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t2 = vec_mradds (a0, vx6, vx2); \
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t4 = vec_mradds (a0, vx2, vec_subs (zero, vx6)); \
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t6 = vec_adds (t8, t3); \
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t3 = vec_subs (t8, t3); \
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t8 = vec_subs (t1, t7); \
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t1 = vec_adds (t1, t7); \
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\
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/* 3rd stage */ \
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t7 = vec_adds (t5, t2); \
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t2 = vec_subs (t5, t2); \
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t5 = vec_adds (t0, t4); \
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t0 = vec_subs (t0, t4); \
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t4 = vec_subs (t8, t3); \
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t3 = vec_adds (t8, t3); \
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\
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/* 4th stage */ \
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vy0 = vec_adds (t7, t1); \
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vy7 = vec_subs (t7, t1); \
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vy1 = vec_mradds (c4, t3, t5); \
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vy6 = vec_mradds (mc4, t3, t5); \
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vy2 = vec_mradds (c4, t4, t0); \
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vy5 = vec_mradds (mc4, t4, t0); \
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vy3 = vec_adds (t2, t6); \
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vy4 = vec_subs (t2, t6); |
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#define IDCT \ |
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vector_s16_t vx0, vx1, vx2, vx3, vx4, vx5, vx6, vx7; \
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vector_s16_t vy0, vy1, vy2, vy3, vy4, vy5, vy6, vy7; \
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vector_s16_t a0, a1, a2, ma2, c4, mc4, zero, bias; \
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vector_s16_t t0, t1, t2, t3, t4, t5, t6, t7, t8; \
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vector_u16_t shift; \
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\
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c4 = vec_splat (constants[0], 0); \
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a0 = vec_splat (constants[0], 1); \
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a1 = vec_splat (constants[0], 2); \
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a2 = vec_splat (constants[0], 3); \
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mc4 = vec_splat (constants[0], 4); \
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ma2 = vec_splat (constants[0], 5); \
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bias = (vector_s16_t)vec_splat ((vector_s32_t)constants[0], 3); \
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\
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zero = vec_splat_s16 (0); \
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shift = vec_splat_u16 (4); \
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\
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vx0 = vec_mradds (vec_sl (block[0], shift), constants[1], zero); \
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vx1 = vec_mradds (vec_sl (block[1], shift), constants[2], zero); \
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vx2 = vec_mradds (vec_sl (block[2], shift), constants[3], zero); \
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vx3 = vec_mradds (vec_sl (block[3], shift), constants[4], zero); \
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vx4 = vec_mradds (vec_sl (block[4], shift), constants[1], zero); \
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vx5 = vec_mradds (vec_sl (block[5], shift), constants[4], zero); \
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vx6 = vec_mradds (vec_sl (block[6], shift), constants[3], zero); \
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vx7 = vec_mradds (vec_sl (block[7], shift), constants[2], zero); \
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\
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IDCT_HALF \
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\
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vx0 = vec_mergeh (vy0, vy4); \
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vx1 = vec_mergel (vy0, vy4); \
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vx2 = vec_mergeh (vy1, vy5); \
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vx3 = vec_mergel (vy1, vy5); \
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vx4 = vec_mergeh (vy2, vy6); \
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vx5 = vec_mergel (vy2, vy6); \
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vx6 = vec_mergeh (vy3, vy7); \
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vx7 = vec_mergel (vy3, vy7); \
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\
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vy0 = vec_mergeh (vx0, vx4); \
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vy1 = vec_mergel (vx0, vx4); \
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vy2 = vec_mergeh (vx1, vx5); \
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vy3 = vec_mergel (vx1, vx5); \
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vy4 = vec_mergeh (vx2, vx6); \
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vy5 = vec_mergel (vx2, vx6); \
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vy6 = vec_mergeh (vx3, vx7); \
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vy7 = vec_mergel (vx3, vx7); \
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\
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vx0 = vec_adds (vec_mergeh (vy0, vy4), bias); \
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vx1 = vec_mergel (vy0, vy4); \
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vx2 = vec_mergeh (vy1, vy5); \
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vx3 = vec_mergel (vy1, vy5); \
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vx4 = vec_mergeh (vy2, vy6); \
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vx5 = vec_mergel (vy2, vy6); \
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vx6 = vec_mergeh (vy3, vy7); \
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vx7 = vec_mergel (vy3, vy7); \
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\
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IDCT_HALF \
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\
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shift = vec_splat_u16 (6); \
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vx0 = vec_sra (vy0, shift); \
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vx1 = vec_sra (vy1, shift); \
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vx2 = vec_sra (vy2, shift); \
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vx3 = vec_sra (vy3, shift); \
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vx4 = vec_sra (vy4, shift); \
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vx5 = vec_sra (vy5, shift); \
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vx6 = vec_sra (vy6, shift); \
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vx7 = vec_sra (vy7, shift); |
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static const vector_s16_t constants[5] = { |
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(vector_s16_t)(23170, 13573, 6518, 21895, -23170, -21895, 32, 31), |
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(vector_s16_t)(16384, 22725, 21407, 19266, 16384, 19266, 21407, 22725), |
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(vector_s16_t)(22725, 31521, 29692, 26722, 22725, 26722, 29692, 31521), |
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(vector_s16_t)(21407, 29692, 27969, 25172, 21407, 25172, 27969, 29692), |
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(vector_s16_t)(19266, 26722, 25172, 22654, 19266, 22654, 25172, 26722) |
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}; |
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void idct_put_altivec(uint8_t* dest, int stride, vector_s16_t* block) |
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{ |
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vector_u8_t tmp; |
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IDCT |
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#define COPY(dest,src) \ |
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tmp = vec_packsu (src, src); \
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vec_ste ((vector_u32_t)tmp, 0, (unsigned int *)dest); \
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vec_ste ((vector_u32_t)tmp, 4, (unsigned int *)dest); |
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COPY (dest, vx0) dest += stride; |
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COPY (dest, vx1) dest += stride; |
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COPY (dest, vx2) dest += stride; |
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COPY (dest, vx3) dest += stride; |
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COPY (dest, vx4) dest += stride; |
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COPY (dest, vx5) dest += stride; |
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COPY (dest, vx6) dest += stride; |
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COPY (dest, vx7) |
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} |
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void idct_add_altivec(uint8_t* dest, int stride, vector_s16_t* block) |
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{ |
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vector_u8_t tmp; |
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vector_s16_t tmp2, tmp3; |
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vector_u8_t perm0; |
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vector_u8_t perm1; |
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vector_u8_t p0, p1, p; |
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IDCT |
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p0 = vec_lvsl (0, dest); |
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p1 = vec_lvsl (stride, dest); |
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p = vec_splat_u8 (-1); |
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perm0 = vec_mergeh (p, p0); |
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perm1 = vec_mergeh (p, p1); |
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#define ADD(dest,src,perm) \ |
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/* *(uint64_t *)&tmp = *(uint64_t *)dest; */ \
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tmp = vec_ld (0, dest); \
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tmp2 = (vector_s16_t)vec_perm (tmp, (vector_u8_t)zero, perm); \
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tmp3 = vec_adds (tmp2, src); \
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tmp = vec_packsu (tmp3, tmp3); \
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vec_ste ((vector_u32_t)tmp, 0, (unsigned int *)dest); \
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vec_ste ((vector_u32_t)tmp, 4, (unsigned int *)dest); |
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ADD (dest, vx0, perm0) dest += stride; |
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ADD (dest, vx1, perm1) dest += stride; |
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ADD (dest, vx2, perm0) dest += stride; |
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ADD (dest, vx3, perm1) dest += stride; |
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ADD (dest, vx4, perm0) dest += stride; |
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ADD (dest, vx5, perm1) dest += stride; |
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ADD (dest, vx6, perm0) dest += stride; |
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ADD (dest, vx7, perm1) |
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} |
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@ -0,0 +1,509 @@ |
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/*
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* Copyright (c) 2002 Dieter Shirley |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include "../dsputil.h" |
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#include "../mpegvideo.h" |
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// Used when initializing constant vectors
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#define FOUR_INSTANCES(x) x,x,x,x |
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// Swaps two variables (used for altivec registers)
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#define SWAP(a,b) \ |
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do { \
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__typeof__(a) swap_temp=a; \
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a=b; \
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b=swap_temp; \
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} while (0) |
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// transposes a matrix consisting of four vectors with four elements each
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#define TRANSPOSE4(a,b,c,d) \ |
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do { \
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__typeof__(a) _trans_ach = vec_mergeh(a, c); \
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__typeof__(a) _trans_acl = vec_mergel(a, c); \
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__typeof__(a) _trans_bdh = vec_mergeh(b, d); \
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__typeof__(a) _trans_bdl = vec_mergel(b, d); \
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\
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a = vec_mergeh(_trans_ach, _trans_bdh); \
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b = vec_mergel(_trans_ach, _trans_bdh); \
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c = vec_mergeh(_trans_acl, _trans_bdl); \
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d = vec_mergel(_trans_acl, _trans_bdl); \
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} while (0) |
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#define TRANSPOSE8(a,b,c,d,e,f,g,h) \ |
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do { \
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__typeof__(a) _A1, _B1, _C1, _D1, _E1, _F1, _G1, _H1; \
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__typeof__(a) _A2, _B2, _C2, _D2, _E2, _F2, _G2, _H2; \
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\
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_A1 = vec_mergeh (a, e); \
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_B1 = vec_mergel (a, e); \
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_C1 = vec_mergeh (b, f); \
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_D1 = vec_mergel (b, f); \
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_E1 = vec_mergeh (c, g); \
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_F1 = vec_mergel (c, g); \
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_G1 = vec_mergeh (d, h); \
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_H1 = vec_mergel (d, h); \
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\
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_A2 = vec_mergeh (_A1, _E1); \
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_B2 = vec_mergel (_A1, _E1); \
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_C2 = vec_mergeh (_B1, _F1); \
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_D2 = vec_mergel (_B1, _F1); \
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_E2 = vec_mergeh (_C1, _G1); \
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_F2 = vec_mergel (_C1, _G1); \
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_G2 = vec_mergeh (_D1, _H1); \
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_H2 = vec_mergel (_D1, _H1); \
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\
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a = vec_mergeh (_A2, _E2); \
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b = vec_mergel (_A2, _E2); \
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c = vec_mergeh (_B2, _F2); \
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d = vec_mergel (_B2, _F2); \
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e = vec_mergeh (_C2, _G2); \
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f = vec_mergel (_C2, _G2); \
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g = vec_mergeh (_D2, _H2); \
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h = vec_mergel (_D2, _H2); \
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} while (0) |
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// Loads a four-byte value (int or float) from the target address
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// into every element in the target vector. Only works if the
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// target address is four-byte aligned (which should be always).
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#define LOAD4(vec, address) \ |
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{ \
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__typeof__(vec)* _load_addr = (__typeof__(vec)*)(address); \
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vector unsigned char _perm_vec = vec_lvsl(0,(address)); \
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vec = vec_ld(0, _load_addr); \
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vec = vec_perm(vec, vec, _perm_vec); \
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vec = vec_splat(vec, 0); \
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} |
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int dct_quantize_altivec(MpegEncContext* s,
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DCTELEM* data, int n, |
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int qscale, int* overflow) |
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{ |
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int lastNonZero; |
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vector float row0, row1, row2, row3, row4, row5, row6, row7; |
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vector float alt0, alt1, alt2, alt3, alt4, alt5, alt6, alt7; |
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const vector float zero = {FOUR_INSTANCES(0.0f)}; |
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// Load the data into the row/alt vectors
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{ |
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vector signed short data0, data1, data2, data3, data4, data5, data6, data7; |
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data0 = vec_ld(0, data); |
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data1 = vec_ld(16, data); |
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data2 = vec_ld(32, data); |
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data3 = vec_ld(48, data); |
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data4 = vec_ld(64, data); |
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data5 = vec_ld(80, data); |
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data6 = vec_ld(96, data); |
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data7 = vec_ld(112, data); |
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// Transpose the data before we start
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TRANSPOSE8(data0, data1, data2, data3, data4, data5, data6, data7); |
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// load the data into floating point vectors. We load
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// the high half of each row into the main row vectors
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// and the low half into the alt vectors.
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row0 = vec_ctf(vec_unpackh(data0), 0); |
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alt0 = vec_ctf(vec_unpackl(data0), 0); |
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row1 = vec_ctf(vec_unpackh(data1), 0); |
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alt1 = vec_ctf(vec_unpackl(data1), 0); |
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row2 = vec_ctf(vec_unpackh(data2), 0); |
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alt2 = vec_ctf(vec_unpackl(data2), 0); |
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row3 = vec_ctf(vec_unpackh(data3), 0); |
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alt3 = vec_ctf(vec_unpackl(data3), 0); |
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row4 = vec_ctf(vec_unpackh(data4), 0); |
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alt4 = vec_ctf(vec_unpackl(data4), 0); |
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row5 = vec_ctf(vec_unpackh(data5), 0); |
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alt5 = vec_ctf(vec_unpackl(data5), 0); |
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row6 = vec_ctf(vec_unpackh(data6), 0); |
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alt6 = vec_ctf(vec_unpackl(data6), 0); |
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row7 = vec_ctf(vec_unpackh(data7), 0); |
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alt7 = vec_ctf(vec_unpackl(data7), 0); |
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} |
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// The following block could exist as a separate an altivec dct
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// function. However, if we put it inline, the DCT data can remain
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// in the vector local variables, as floats, which we'll use during the
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// quantize step...
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{ |
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const vector float vec_0_298631336 = {FOUR_INSTANCES(0.298631336f)}; |
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const vector float vec_0_390180644 = {FOUR_INSTANCES(-0.390180644f)}; |
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const vector float vec_0_541196100 = {FOUR_INSTANCES(0.541196100f)}; |
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const vector float vec_0_765366865 = {FOUR_INSTANCES(0.765366865f)}; |
||||
const vector float vec_0_899976223 = {FOUR_INSTANCES(-0.899976223f)}; |
||||
const vector float vec_1_175875602 = {FOUR_INSTANCES(1.175875602f)}; |
||||
const vector float vec_1_501321110 = {FOUR_INSTANCES(1.501321110f)}; |
||||
const vector float vec_1_847759065 = {FOUR_INSTANCES(-1.847759065f)}; |
||||
const vector float vec_1_961570560 = {FOUR_INSTANCES(-1.961570560f)}; |
||||
const vector float vec_2_053119869 = {FOUR_INSTANCES(2.053119869f)}; |
||||
const vector float vec_2_562915447 = {FOUR_INSTANCES(-2.562915447f)}; |
||||
const vector float vec_3_072711026 = {FOUR_INSTANCES(3.072711026f)}; |
||||
|
||||
|
||||
int whichPass, whichHalf; |
||||
|
||||
for(whichPass = 1; whichPass<=2; whichPass++) |
||||
{ |
||||
for(whichHalf = 1; whichHalf<=2; whichHalf++) |
||||
{ |
||||
vector float tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; |
||||
vector float tmp10, tmp11, tmp12, tmp13; |
||||
vector float z1, z2, z3, z4, z5; |
||||
|
||||
tmp0 = vec_add(row0, row7); // tmp0 = dataptr[0] + dataptr[7];
|
||||
tmp7 = vec_sub(row0, row7); // tmp7 = dataptr[0] - dataptr[7];
|
||||
tmp3 = vec_add(row3, row4); // tmp3 = dataptr[3] + dataptr[4];
|
||||
tmp4 = vec_sub(row3, row4); // tmp4 = dataptr[3] - dataptr[4];
|
||||
tmp1 = vec_add(row1, row6); // tmp1 = dataptr[1] + dataptr[6];
|
||||
tmp6 = vec_sub(row1, row6); // tmp6 = dataptr[1] - dataptr[6];
|
||||
tmp2 = vec_add(row2, row5); // tmp2 = dataptr[2] + dataptr[5];
|
||||
tmp5 = vec_sub(row2, row5); // tmp5 = dataptr[2] - dataptr[5];
|
||||
|
||||
tmp10 = vec_add(tmp0, tmp3); // tmp10 = tmp0 + tmp3;
|
||||
tmp13 = vec_sub(tmp0, tmp3); // tmp13 = tmp0 - tmp3;
|
||||
tmp11 = vec_add(tmp1, tmp2); // tmp11 = tmp1 + tmp2;
|
||||
tmp12 = vec_sub(tmp1, tmp2); // tmp12 = tmp1 - tmp2;
|
||||
|
||||
|
||||
// dataptr[0] = (DCTELEM) ((tmp10 + tmp11) << PASS1_BITS);
|
||||
row0 = vec_add(tmp10, tmp11); |
||||
|
||||
// dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
|
||||
row4 = vec_sub(tmp10, tmp11); |
||||
|
||||
|
||||
// z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
||||
z1 = vec_madd(vec_add(tmp12, tmp13), vec_0_541196100, (vector float)zero); |
||||
|
||||
// dataptr[2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
||||
// CONST_BITS-PASS1_BITS);
|
||||
row2 = vec_madd(tmp13, vec_0_765366865, z1); |
||||
|
||||
// dataptr[6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
||||
// CONST_BITS-PASS1_BITS);
|
||||
row6 = vec_madd(tmp12, vec_1_847759065, z1); |
||||
|
||||
z1 = vec_add(tmp4, tmp7); // z1 = tmp4 + tmp7;
|
||||
z2 = vec_add(tmp5, tmp6); // z2 = tmp5 + tmp6;
|
||||
z3 = vec_add(tmp4, tmp6); // z3 = tmp4 + tmp6;
|
||||
z4 = vec_add(tmp5, tmp7); // z4 = tmp5 + tmp7;
|
||||
|
||||
// z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */
|
||||
z5 = vec_madd(vec_add(z3, z4), vec_1_175875602, (vector float)zero); |
||||
|
||||
// z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
|
||||
z3 = vec_madd(z3, vec_1_961570560, z5); |
||||
|
||||
// z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
|
||||
z4 = vec_madd(z4, vec_0_390180644, z5); |
||||
|
||||
// The following adds are rolled into the multiplies above
|
||||
// z3 = vec_add(z3, z5); // z3 += z5;
|
||||
// z4 = vec_add(z4, z5); // z4 += z5;
|
||||
|
||||
// z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
|
||||
// Wow! It's actually more effecient to roll this multiply
|
||||
// into the adds below, even thought the multiply gets done twice!
|
||||
// z2 = vec_madd(z2, vec_2_562915447, (vector float)zero);
|
||||
|
||||
// z1 = MULTIPLY(z1, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */
|
||||
// Same with this one...
|
||||
// z1 = vec_madd(z1, vec_0_899976223, (vector float)zero);
|
||||
|
||||
// tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
|
||||
// dataptr[7] = (DCTELEM) DESCALE(tmp4 + z1 + z3, CONST_BITS-PASS1_BITS);
|
||||
row7 = vec_madd(tmp4, vec_0_298631336, vec_madd(z1, vec_0_899976223, z3)); |
||||
|
||||
// tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
|
||||
// dataptr[5] = (DCTELEM) DESCALE(tmp5 + z2 + z4, CONST_BITS-PASS1_BITS);
|
||||
row5 = vec_madd(tmp5, vec_2_053119869, vec_madd(z2, vec_2_562915447, z4)); |
||||
|
||||
// tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
|
||||
// dataptr[3] = (DCTELEM) DESCALE(tmp6 + z2 + z3, CONST_BITS-PASS1_BITS);
|
||||
row3 = vec_madd(tmp6, vec_3_072711026, vec_madd(z2, vec_2_562915447, z3)); |
||||
|
||||
// tmp7 = MULTIPLY(tmp7, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */
|
||||
// dataptr[1] = (DCTELEM) DESCALE(tmp7 + z1 + z4, CONST_BITS-PASS1_BITS);
|
||||
row1 = vec_madd(z1, vec_0_899976223, vec_madd(tmp7, vec_1_501321110, z4)); |
||||
|
||||
// Swap the row values with the alts. If this is the first half,
|
||||
// this sets up the low values to be acted on in the second half.
|
||||
// If this is the second half, it puts the high values back in
|
||||
// the row values where they are expected to be when we're done.
|
||||
SWAP(row0, alt0); |
||||
SWAP(row1, alt1); |
||||
SWAP(row2, alt2); |
||||
SWAP(row3, alt3); |
||||
SWAP(row4, alt4); |
||||
SWAP(row5, alt5); |
||||
SWAP(row6, alt6); |
||||
SWAP(row7, alt7); |
||||
} |
||||
|
||||
if (whichPass == 1) |
||||
{ |
||||
// transpose the data for the second pass
|
||||
|
||||
// First, block transpose the upper right with lower left.
|
||||
SWAP(row4, alt0); |
||||
SWAP(row5, alt1); |
||||
SWAP(row6, alt2); |
||||
SWAP(row7, alt3); |
||||
|
||||
// Now, transpose each block of four
|
||||
TRANSPOSE4(row0, row1, row2, row3); |
||||
TRANSPOSE4(row4, row5, row6, row7); |
||||
TRANSPOSE4(alt0, alt1, alt2, alt3); |
||||
TRANSPOSE4(alt4, alt5, alt6, alt7); |
||||
} |
||||
} |
||||
} |
||||
|
||||
// used after quantise step
|
||||
int oldBaseValue = 0; |
||||
|
||||
// perform the quantise step, using the floating point data
|
||||
// still in the row/alt registers
|
||||
{ |
||||
const int* biasAddr; |
||||
const vector signed int* qmat; |
||||
vector float bias, negBias; |
||||
|
||||
if (s->mb_intra) |
||||
{ |
||||
vector signed int baseVector; |
||||
|
||||
// We must cache element 0 in the intra case
|
||||
// (it needs special handling).
|
||||
baseVector = vec_cts(vec_splat(row0, 0), 0); |
||||
vec_ste(baseVector, 0, &oldBaseValue); |
||||
|
||||
qmat = (vector signed int*)s->q_intra_matrix[qscale]; |
||||
biasAddr = &(s->intra_quant_bias); |
||||
} |
||||
else |
||||
{ |
||||
qmat = (vector signed int*)s->q_inter_matrix[qscale]; |
||||
biasAddr = &(s->inter_quant_bias); |
||||
} |
||||
|
||||
// Load the bias vector (We add 0.5 to the bias so that we're
|
||||
// rounding when we convert to int, instead of flooring.)
|
||||
{ |
||||
vector signed int biasInt; |
||||
const vector float negOneFloat = (vector float)(FOUR_INSTANCES(-1.0f)); |
||||
LOAD4(biasInt, biasAddr); |
||||
bias = vec_ctf(biasInt, QUANT_BIAS_SHIFT); |
||||
negBias = vec_madd(bias, negOneFloat, zero); |
||||
} |
||||
|
||||
{ |
||||
vector float q0, q1, q2, q3, q4, q5, q6, q7; |
||||
|
||||
q0 = vec_ctf(qmat[0], QMAT_SHIFT); |
||||
q1 = vec_ctf(qmat[2], QMAT_SHIFT); |
||||
q2 = vec_ctf(qmat[4], QMAT_SHIFT); |
||||
q3 = vec_ctf(qmat[6], QMAT_SHIFT); |
||||
q4 = vec_ctf(qmat[8], QMAT_SHIFT); |
||||
q5 = vec_ctf(qmat[10], QMAT_SHIFT); |
||||
q6 = vec_ctf(qmat[12], QMAT_SHIFT); |
||||
q7 = vec_ctf(qmat[14], QMAT_SHIFT); |
||||
|
||||
row0 = vec_sel(vec_madd(row0, q0, negBias), vec_madd(row0, q0, bias), |
||||
vec_cmpgt(row0, zero)); |
||||
row1 = vec_sel(vec_madd(row1, q1, negBias), vec_madd(row1, q1, bias), |
||||
vec_cmpgt(row1, zero)); |
||||
row2 = vec_sel(vec_madd(row2, q2, negBias), vec_madd(row2, q2, bias), |
||||
vec_cmpgt(row2, zero)); |
||||
row3 = vec_sel(vec_madd(row3, q3, negBias), vec_madd(row3, q3, bias), |
||||
vec_cmpgt(row3, zero)); |
||||
row4 = vec_sel(vec_madd(row4, q4, negBias), vec_madd(row4, q4, bias), |
||||
vec_cmpgt(row4, zero)); |
||||
row5 = vec_sel(vec_madd(row5, q5, negBias), vec_madd(row5, q5, bias), |
||||
vec_cmpgt(row5, zero)); |
||||
row6 = vec_sel(vec_madd(row6, q6, negBias), vec_madd(row6, q6, bias), |
||||
vec_cmpgt(row6, zero)); |
||||
row7 = vec_sel(vec_madd(row7, q7, negBias), vec_madd(row7, q7, bias), |
||||
vec_cmpgt(row7, zero)); |
||||
|
||||
q0 = vec_ctf(qmat[1], QMAT_SHIFT); |
||||
q1 = vec_ctf(qmat[3], QMAT_SHIFT); |
||||
q2 = vec_ctf(qmat[5], QMAT_SHIFT); |
||||
q3 = vec_ctf(qmat[7], QMAT_SHIFT); |
||||
q4 = vec_ctf(qmat[9], QMAT_SHIFT); |
||||
q5 = vec_ctf(qmat[11], QMAT_SHIFT); |
||||
q6 = vec_ctf(qmat[13], QMAT_SHIFT); |
||||
q7 = vec_ctf(qmat[15], QMAT_SHIFT); |
||||
|
||||
alt0 = vec_sel(vec_madd(alt0, q0, negBias), vec_madd(alt0, q0, bias), |
||||
vec_cmpgt(alt0, zero)); |
||||
alt1 = vec_sel(vec_madd(alt1, q1, negBias), vec_madd(alt1, q1, bias), |
||||
vec_cmpgt(alt1, zero)); |
||||
alt2 = vec_sel(vec_madd(alt2, q2, negBias), vec_madd(alt2, q2, bias), |
||||
vec_cmpgt(alt2, zero)); |
||||
alt3 = vec_sel(vec_madd(alt3, q3, negBias), vec_madd(alt3, q3, bias), |
||||
vec_cmpgt(alt3, zero)); |
||||
alt4 = vec_sel(vec_madd(alt4, q4, negBias), vec_madd(alt4, q4, bias), |
||||
vec_cmpgt(alt4, zero)); |
||||
alt5 = vec_sel(vec_madd(alt5, q5, negBias), vec_madd(alt5, q5, bias), |
||||
vec_cmpgt(alt5, zero)); |
||||
alt6 = vec_sel(vec_madd(alt6, q6, negBias), vec_madd(alt6, q6, bias), |
||||
vec_cmpgt(alt6, zero)); |
||||
alt7 = vec_sel(vec_madd(alt7, q7, negBias), vec_madd(alt7, q7, bias), |
||||
vec_cmpgt(alt7, zero)); |
||||
} |
||||
|
||||
|
||||
} |
||||
|
||||
// Store the data back into the original block
|
||||
{ |
||||
vector signed short data0, data1, data2, data3, data4, data5, data6, data7; |
||||
|
||||
data0 = vec_pack(vec_cts(row0, 0), vec_cts(alt0, 0)); |
||||
data1 = vec_pack(vec_cts(row1, 0), vec_cts(alt1, 0)); |
||||
data2 = vec_pack(vec_cts(row2, 0), vec_cts(alt2, 0)); |
||||
data3 = vec_pack(vec_cts(row3, 0), vec_cts(alt3, 0)); |
||||
data4 = vec_pack(vec_cts(row4, 0), vec_cts(alt4, 0)); |
||||
data5 = vec_pack(vec_cts(row5, 0), vec_cts(alt5, 0)); |
||||
data6 = vec_pack(vec_cts(row6, 0), vec_cts(alt6, 0)); |
||||
data7 = vec_pack(vec_cts(row7, 0), vec_cts(alt7, 0)); |
||||
|
||||
{ |
||||
// Clamp for overflow
|
||||
vector signed int max_q_int, min_q_int; |
||||
vector signed short max_q, min_q; |
||||
|
||||
LOAD4(max_q_int, &(s->max_qcoeff)); |
||||
LOAD4(min_q_int, &(s->min_qcoeff)); |
||||
|
||||
max_q = vec_pack(max_q_int, max_q_int); |
||||
min_q = vec_pack(min_q_int, min_q_int); |
||||
|
||||
data0 = vec_max(vec_min(data0, max_q), min_q); |
||||
data1 = vec_max(vec_min(data1, max_q), min_q); |
||||
data2 = vec_max(vec_min(data2, max_q), min_q); |
||||
data4 = vec_max(vec_min(data4, max_q), min_q); |
||||
data5 = vec_max(vec_min(data5, max_q), min_q); |
||||
data6 = vec_max(vec_min(data6, max_q), min_q); |
||||
data7 = vec_max(vec_min(data7, max_q), min_q); |
||||
} |
||||
|
||||
vector bool char zero_01, zero_23, zero_45, zero_67; |
||||
vector signed char scanIndices_01, scanIndices_23, scanIndices_45, scanIndices_67; |
||||
vector signed char negOne = vec_splat_s8(-1); |
||||
vector signed char* scanPtr = |
||||
(vector signed char*)(s->intra_scantable.inverse); |
||||
|
||||
// Determine the largest non-zero index.
|
||||
zero_01 = vec_pack(vec_cmpeq(data0, (vector short)zero), |
||||
vec_cmpeq(data1, (vector short)zero)); |
||||
zero_23 = vec_pack(vec_cmpeq(data2, (vector short)zero), |
||||
vec_cmpeq(data3, (vector short)zero)); |
||||
zero_45 = vec_pack(vec_cmpeq(data4, (vector short)zero), |
||||
vec_cmpeq(data5, (vector short)zero)); |
||||
zero_67 = vec_pack(vec_cmpeq(data6, (vector short)zero), |
||||
vec_cmpeq(data7, (vector short)zero)); |
||||
|
||||
// 64 biggest values
|
||||
scanIndices_01 = vec_sel(scanPtr[0], negOne, zero_01); |
||||
scanIndices_23 = vec_sel(scanPtr[1], negOne, zero_23); |
||||
scanIndices_45 = vec_sel(scanPtr[2], negOne, zero_45); |
||||
scanIndices_67 = vec_sel(scanPtr[3], negOne, zero_67); |
||||
|
||||
// 32 largest values
|
||||
scanIndices_01 = vec_max(scanIndices_01, scanIndices_23); |
||||
scanIndices_45 = vec_max(scanIndices_45, scanIndices_67); |
||||
|
||||
// 16 largest values
|
||||
scanIndices_01 = vec_max(scanIndices_01, scanIndices_45); |
||||
|
||||
// 8 largest values
|
||||
scanIndices_01 = vec_max(vec_mergeh(scanIndices_01, negOne), |
||||
vec_mergel(scanIndices_01, negOne)); |
||||
|
||||
// 4 largest values
|
||||
scanIndices_01 = vec_max(vec_mergeh(scanIndices_01, negOne), |
||||
vec_mergel(scanIndices_01, negOne)); |
||||
|
||||
// 2 largest values
|
||||
scanIndices_01 = vec_max(vec_mergeh(scanIndices_01, negOne), |
||||
vec_mergel(scanIndices_01, negOne)); |
||||
|
||||
// largest value
|
||||
scanIndices_01 = vec_max(vec_mergeh(scanIndices_01, negOne), |
||||
vec_mergel(scanIndices_01, negOne)); |
||||
|
||||
scanIndices_01 = vec_splat(scanIndices_01, 0); |
||||
|
||||
signed char lastNonZeroChar; |
||||
|
||||
vec_ste(scanIndices_01, 0, &lastNonZeroChar); |
||||
|
||||
lastNonZero = lastNonZeroChar; |
||||
|
||||
// While the data is still in vectors we check for the transpose IDCT permute
|
||||
// and handle it using the vector unit if we can. This is the permute used
|
||||
// by the altivec idct, so it is common when using the altivec dct.
|
||||
|
||||
if ((lastNonZero > 0) && (s->idct_permutation_type == FF_TRANSPOSE_IDCT_PERM)) |
||||
{ |
||||
TRANSPOSE8(data0, data1, data2, data3, data4, data5, data6, data7); |
||||
} |
||||
|
||||
vec_st(data0, 0, data); |
||||
vec_st(data1, 16, data); |
||||
vec_st(data2, 32, data); |
||||
vec_st(data3, 48, data); |
||||
vec_st(data4, 64, data); |
||||
vec_st(data5, 80, data); |
||||
vec_st(data6, 96, data); |
||||
vec_st(data7, 112, data); |
||||
} |
||||
|
||||
// special handling of block[0]
|
||||
if (s->mb_intra) |
||||
{ |
||||
if (!s->h263_aic) |
||||
{ |
||||
if (n < 4) |
||||
oldBaseValue /= s->y_dc_scale; |
||||
else |
||||
oldBaseValue /= s->c_dc_scale; |
||||
} |
||||
|
||||
// Divide by 8, rounding the result
|
||||
data[0] = (oldBaseValue + 4) >> 3; |
||||
} |
||||
|
||||
// We handled the tranpose permutation above and we don't
|
||||
// need to permute the "no" permutation case.
|
||||
if ((lastNonZero > 0) && |
||||
(s->idct_permutation_type != FF_TRANSPOSE_IDCT_PERM) && |
||||
(s->idct_permutation_type != FF_NO_IDCT_PERM)) |
||||
{ |
||||
ff_block_permute(data, s->idct_permutation, |
||||
s->intra_scantable.scantable, lastNonZero); |
||||
} |
||||
|
||||
return lastNonZero; |
||||
} |
||||
|
||||
@ -0,0 +1,77 @@ |
||||
/*
|
||||
* Copyright (c) 2002 Dieter Shirley |
||||
* |
||||
* This library 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 of the License, or (at your option) any later version. |
||||
* |
||||
* This library 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 this library; if not, write to the Free Software |
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||||
*/ |
||||
|
||||
#include <time.h> |
||||
#include "../../config.h" |
||||
#include "../dsputil.h" |
||||
#include "../mpegvideo.h" |
||||
|
||||
#ifdef HAVE_ALTIVEC |
||||
#include "dsputil_altivec.h" |
||||
#endif |
||||
|
||||
extern int dct_quantize_altivec(MpegEncContext *s,
|
||||
DCTELEM *block, int n, |
||||
int qscale, int *overflow); |
||||
|
||||
extern void idct_put_altivec(UINT8 *dest, int line_size, INT16 *block); |
||||
extern void idct_add_altivec(UINT8 *dest, int line_size, INT16 *block); |
||||
|
||||
|
||||
void MPV_common_init_ppc(MpegEncContext *s) |
||||
{ |
||||
#if HAVE_ALTIVEC |
||||
if (has_altivec()) |
||||
{ |
||||
if ((s->avctx->idct_algo == FF_IDCT_AUTO) || |
||||
(s->avctx->idct_algo == FF_IDCT_ALTIVEC)) |
||||
{ |
||||
s->idct_put = idct_put_altivec; |
||||
s->idct_add = idct_add_altivec; |
||||
s->idct_permutation_type = FF_TRANSPOSE_IDCT_PERM; |
||||
} |
||||
|
||||
// Test to make sure that the dct required alignments are met.
|
||||
if ((((long)(s->q_intra_matrix) & 0x0f) != 0) || |
||||
(((long)(s->q_inter_matrix) & 0x0f) != 0)) |
||||
{ |
||||
fprintf(stderr, "Internal Error: q-matrix blocks must be 16-byte aligned " |
||||
"to use Altivec DCT. Reverting to non-altivec version.\n"); |
||||
return; |
||||
} |
||||
|
||||
if (((long)(s->intra_scantable.inverse) & 0x0f) != 0) |
||||
{ |
||||
fprintf(stderr, "Internal Error: scan table blocks must be 16-byte aligned " |
||||
"to use Altivec DCT. Reverting to non-altivec version.\n"); |
||||
return; |
||||
} |
||||
|
||||
|
||||
if ((s->avctx->dct_algo == FF_DCT_AUTO) || |
||||
(s->avctx->dct_algo == FF_DCT_ALTIVEC)) |
||||
{ |
||||
s->dct_quantize = dct_quantize_altivec; |
||||
} |
||||
} else |
||||
#endif |
||||
{ |
||||
/* Non-AltiVec PPC optimisations here */ |
||||
} |
||||
} |
||||
|
||||
Loading…
Reference in new issue