/* * RV60 dsp routines * * 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 "rv60dsp.h" #include "libavutil/common.h" void ff_rv60_idct4x4_add(const int16_t * block, uint8_t * dst, int dst_stride) { int tmp[16]; #define IDCT4X4(src, src_stride, src_step, dst, dst_stride, dst_step) \ for (int y = 0; y < 4; y++) { \ int a = src[y*src_stride + 0*src_step]; \ int b = src[y*src_stride + 1*src_step]; \ int c = src[y*src_stride + 2*src_step]; \ int d = src[y*src_stride + 3*src_step]; \ int t0 = 13 * (a + c); \ int t1 = 13 * (a - c); \ int t2 = 7 * b - 17 * d; \ int t3 = 7 * d + 17 * b; \ STORE(dst[y*dst_stride + 0*dst_step], (t0 + t3 + 16) >> 5); \ STORE(dst[y*dst_stride + 1*dst_step], (t1 + t2 + 16) >> 5); \ STORE(dst[y*dst_stride + 2*dst_step], (t1 - t2 + 16) >> 5); \ STORE(dst[y*dst_stride + 3*dst_step], (t0 - t3 + 16) >> 5); \ } #define STORE(a, b) a = b IDCT4X4(block, 1, 4, tmp, 1, 4) #undef STORE #define STORE(a, b) a = av_clip_uint8(a + (b)) IDCT4X4(tmp, 4, 1, dst, dst_stride, 1) #undef STORE } void ff_rv60_idct8x8_add(const int16_t * block, uint8_t * dst, int dst_stride) { int tmp[64]; #define IDCT8X8(src, src_stride, src_step, dst, dst_stride, dst_step) \ for (int y = 0; y < 8; y++) { \ int a = src[y*src_stride + 0*src_step]; \ int b = src[y*src_stride + 1*src_step]; \ int c = src[y*src_stride + 2*src_step]; \ int d = src[y*src_stride + 3*src_step]; \ int e = src[y*src_stride + 4*src_step]; \ int f = src[y*src_stride + 5*src_step]; \ int g = src[y*src_stride + 6*src_step]; \ int h = src[y*src_stride + 7*src_step]; \ int t0 = 37 * (a + e); \ int t1 = 37 * (a - e); \ int t2 = 48 * c + 20 * g; \ int t3 = 20 * c - 48 * g; \ int t4 = t0 + t2; \ int t5 = t0 - t2; \ int t6 = t1 + t3; \ int t7 = t1 - t3; \ int t8 = 51 * b + 43 * d + 29 * f + 10 * h; \ int t9 = 43 * b - 10 * d - 51 * f - 29 * h; \ int ta = 29 * b - 51 * d + 10 * f + 43 * h; \ int tb = 10 * b - 29 * d + 43 * f - 51 * h; \ STORE(dst[y*dst_stride + 0*dst_step], (t4 + t8 + 64) >> 7); \ STORE(dst[y*dst_stride + 1*dst_step], (t6 + t9 + 64) >> 7); \ STORE(dst[y*dst_stride + 2*dst_step], (t7 + ta + 64) >> 7); \ STORE(dst[y*dst_stride + 3*dst_step], (t5 + tb + 64) >> 7); \ STORE(dst[y*dst_stride + 4*dst_step], (t5 - tb + 64) >> 7); \ STORE(dst[y*dst_stride + 5*dst_step], (t7 - ta + 64) >> 7); \ STORE(dst[y*dst_stride + 6*dst_step], (t6 - t9 + 64) >> 7); \ STORE(dst[y*dst_stride + 7*dst_step], (t4 - t8 + 64) >> 7); \ } #define STORE(a, b) a = b IDCT8X8(block, 1, 8, tmp, 1, 8) #undef STORE #define STORE(a, b) a = av_clip_uint8(a + (b)) IDCT8X8(tmp, 8, 1, dst, dst_stride, 1) #undef STORE } void ff_rv60_idct16x16_add(const int16_t * block, uint8_t * dst, int dst_stride) { int16_t tmp[256]; #define IDCT16X16(src, src_stride, src_step, dst, dst_stride, dst_step) \ for (int y = 0; y < 16; y++) { \ int a = src[y*src_stride + 0*src_step]; \ int b = src[y*src_stride + 1*src_step]; \ int c = src[y*src_stride + 2*src_step]; \ int d = src[y*src_stride + 3*src_step]; \ int e = src[y*src_stride + 4*src_step]; \ int f = src[y*src_stride + 5*src_step]; \ int g = src[y*src_stride + 6*src_step]; \ int h = src[y*src_stride + 7*src_step]; \ int i = src[y*src_stride + 8*src_step]; \ int j = src[y*src_stride + 9*src_step]; \ int k = src[y*src_stride + 10*src_step]; \ int l = src[y*src_stride + 11*src_step]; \ int m = src[y*src_stride + 12*src_step]; \ int n = src[y*src_stride + 13*src_step]; \ int o = src[y*src_stride + 14*src_step]; \ int p = src[y*src_stride + 15*src_step]; \ int t0 = 26 * (a + i); \ int t1 = 26 * (a - i); \ int t2 = 14 * e - 34 * m; \ int t3 = 34 * e + 14 * m; \ int t4 = t0 + t3; \ int t5 = t0 - t3; \ int t6 = t1 + t2; \ int t7 = t1 - t2; \ int tmp00 = 31 * c - 7 * g - 36 * k - 20 * o; \ int tmp01 = 36 * c + 31 * g + 20 * k + 7 * o; \ int tmp02 = 20 * c - 36 * g + 7 * k + 31 * o; \ int tmp03 = 7 * c - 20 * g + 31 * k - 36 * o; \ int tm0 = t4 + tmp01; \ int tm1 = t4 - tmp01; \ int tm2 = t5 + tmp03; \ int tm3 = t5 - tmp03; \ int tm4 = t6 + tmp00; \ int tm5 = t6 - tmp00; \ int tm6 = t7 + tmp02; \ int tm7 = t7 - tmp02; \ int tt0 = 37 * b + 35 * d + 32 * f + 28 * h + 23 * j + 17 * l + 11 * n + 4 * p; \ int tt1 = 35 * b + 23 * d + 4 * f - 17 * h - 32 * j - 37 * l - 28 * n - 11 * p; \ int tt2 = 32 * b + 4 * d - 28 * f - 35 * h - 11 * j + 23 * l + 37 * n + 17 * p; \ int tt3 = 28 * b - 17 * d - 35 * f + 4 * h + 37 * j + 11 * l - 32 * n - 23 * p; \ int tt4 = 23 * b - 32 * d - 11 * f + 37 * h - 4 * j - 35 * l + 17 * n + 28 * p; \ int tt5 = 17 * b - 37 * d + 23 * f + 11 * h - 35 * j + 28 * l + 4 * n - 32 * p; \ int tt6 = 11 * b - 28 * d + 37 * f - 32 * h + 17 * j + 4 * l - 23 * n + 35 * p; \ int tt7 = 4 * b - 11 * d + 17 * f - 23 * h + 28 * j - 32 * l + 35 * n - 37 * p; \ STORE(dst[y*dst_stride+ 0*dst_step], (tm0 + tt0 + 64) >> 7); \ STORE(dst[y*dst_stride+ 1*dst_step], (tm4 + tt1 + 64) >> 7); \ STORE(dst[y*dst_stride+ 2*dst_step], (tm6 + tt2 + 64) >> 7); \ STORE(dst[y*dst_stride+ 3*dst_step], (tm2 + tt3 + 64) >> 7); \ STORE(dst[y*dst_stride+ 4*dst_step], (tm3 + tt4 + 64) >> 7); \ STORE(dst[y*dst_stride+ 5*dst_step], (tm7 + tt5 + 64) >> 7); \ STORE(dst[y*dst_stride+ 6*dst_step], (tm5 + tt6 + 64) >> 7); \ STORE(dst[y*dst_stride+ 7*dst_step], (tm1 + tt7 + 64) >> 7); \ STORE(dst[y*dst_stride+ 8*dst_step], (tm1 - tt7 + 64) >> 7); \ STORE(dst[y*dst_stride+ 9*dst_step], (tm5 - tt6 + 64) >> 7); \ STORE(dst[y*dst_stride+ 10*dst_step], (tm7 - tt5 + 64) >> 7); \ STORE(dst[y*dst_stride+ 11*dst_step], (tm3 - tt4 + 64) >> 7); \ STORE(dst[y*dst_stride+ 12*dst_step], (tm2 - tt3 + 64) >> 7); \ STORE(dst[y*dst_stride+ 13*dst_step], (tm6 - tt2 + 64) >> 7); \ STORE(dst[y*dst_stride+ 14*dst_step], (tm4 - tt1 + 64) >> 7); \ STORE(dst[y*dst_stride+ 15*dst_step], (tm0 - tt0 + 64) >> 7); \ } #define STORE(a, x) a = av_clip_intp2(x, 15) IDCT16X16(block, 1, 16, tmp, 1, 16) #undef STORE #define STORE(a, x) a = av_clip_uint8(a + (x)) IDCT16X16(tmp, 16, 1, dst, dst_stride, 1) #undef STORE }