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Diffstat (limited to 'ffmpeg1/libavcodec/rv34dsp.c')
| -rw-r--r-- | ffmpeg1/libavcodec/rv34dsp.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/ffmpeg1/libavcodec/rv34dsp.c b/ffmpeg1/libavcodec/rv34dsp.c deleted file mode 100644 index 7234ee8..0000000 --- a/ffmpeg1/libavcodec/rv34dsp.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * RV30/40 decoder common dsp functions - * Copyright (c) 2007 Mike Melanson, Konstantin Shishkov - * Copyright (c) 2011 Janne Grunau - * - * This file is part of Libav. - * - * Libav 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. - * - * Libav 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 Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * RV30/40 decoder common dsp functions - */ - -#include "rv34dsp.h" -#include "libavutil/common.h" - -/** - * @name RV30/40 inverse transform functions - * @{ - */ - -static av_always_inline void rv34_row_transform(int temp[16], int16_t *block) -{ - int i; - - for(i = 0; i < 4; i++){ - const int z0 = 13*(block[i+4*0] + block[i+4*2]); - const int z1 = 13*(block[i+4*0] - block[i+4*2]); - const int z2 = 7* block[i+4*1] - 17*block[i+4*3]; - const int z3 = 17* block[i+4*1] + 7*block[i+4*3]; - - temp[4*i+0] = z0 + z3; - temp[4*i+1] = z1 + z2; - temp[4*i+2] = z1 - z2; - temp[4*i+3] = z0 - z3; - } -} - -/** - * Real Video 3.0/4.0 inverse transform + sample reconstruction - * Code is almost the same as in SVQ3, only scaling is different. - */ -static void rv34_idct_add_c(uint8_t *dst, ptrdiff_t stride, int16_t *block){ - int temp[16]; - int i; - - rv34_row_transform(temp, block); - memset(block, 0, 16*sizeof(int16_t)); - - for(i = 0; i < 4; i++){ - const int z0 = 13*(temp[4*0+i] + temp[4*2+i]) + 0x200; - const int z1 = 13*(temp[4*0+i] - temp[4*2+i]) + 0x200; - const int z2 = 7* temp[4*1+i] - 17*temp[4*3+i]; - const int z3 = 17* temp[4*1+i] + 7*temp[4*3+i]; - - dst[0] = av_clip_uint8( dst[0] + ( (z0 + z3) >> 10 ) ); - dst[1] = av_clip_uint8( dst[1] + ( (z1 + z2) >> 10 ) ); - dst[2] = av_clip_uint8( dst[2] + ( (z1 - z2) >> 10 ) ); - dst[3] = av_clip_uint8( dst[3] + ( (z0 - z3) >> 10 ) ); - - dst += stride; - } -} - -/** - * RealVideo 3.0/4.0 inverse transform for DC block - * - * Code is almost the same as rv34_inv_transform() - * but final coefficients are multiplied by 1.5 and have no rounding. - */ -static void rv34_inv_transform_noround_c(int16_t *block){ - int temp[16]; - int i; - - rv34_row_transform(temp, block); - - for(i = 0; i < 4; i++){ - const int z0 = 39*(temp[4*0+i] + temp[4*2+i]); - const int z1 = 39*(temp[4*0+i] - temp[4*2+i]); - const int z2 = 21* temp[4*1+i] - 51*temp[4*3+i]; - const int z3 = 51* temp[4*1+i] + 21*temp[4*3+i]; - - block[i*4+0] = (z0 + z3) >> 11; - block[i*4+1] = (z1 + z2) >> 11; - block[i*4+2] = (z1 - z2) >> 11; - block[i*4+3] = (z0 - z3) >> 11; - } -} - -static void rv34_idct_dc_add_c(uint8_t *dst, ptrdiff_t stride, int dc) -{ - int i, j; - - dc = (13*13*dc + 0x200) >> 10; - for (i = 0; i < 4; i++) - { - for (j = 0; j < 4; j++) - dst[j] = av_clip_uint8( dst[j] + dc ); - - dst += stride; - } -} - -static void rv34_inv_transform_dc_noround_c(int16_t *block) -{ - int16_t dc = (13 * 13 * 3 * block[0]) >> 11; - int i, j; - - for (i = 0; i < 4; i++, block += 4) - for (j = 0; j < 4; j++) - block[j] = dc; -} - -/** @} */ // transform - - -av_cold void ff_rv34dsp_init(RV34DSPContext *c) -{ - c->rv34_inv_transform = rv34_inv_transform_noround_c; - c->rv34_inv_transform_dc = rv34_inv_transform_dc_noround_c; - - c->rv34_idct_add = rv34_idct_add_c; - c->rv34_idct_dc_add = rv34_idct_dc_add_c; - - if (ARCH_ARM) - ff_rv34dsp_init_arm(c); - if (ARCH_X86) - ff_rv34dsp_init_x86(c); -} |