| /* |
| * Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at) |
| * |
| * This file is part of libswresample |
| * |
| * libswresample 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. |
| * |
| * libswresample 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 libswresample; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #if defined(TEMPLATE_REMATRIX_FLT) |
| # define R(x) x |
| # define SAMPLE float |
| # define COEFF float |
| # define INTER float |
| # define RENAME(x) x ## _float |
| #elif defined(TEMPLATE_REMATRIX_DBL) |
| # define R(x) x |
| # define SAMPLE double |
| # define COEFF double |
| # define INTER double |
| # define RENAME(x) x ## _double |
| #elif defined(TEMPLATE_REMATRIX_S16) |
| # define SAMPLE int16_t |
| # define COEFF int |
| # define INTER int |
| # ifdef TEMPLATE_CLIP |
| # define R(x) av_clip_int16(((x) + 16384)>>15) |
| # define RENAME(x) x ## _clip_s16 |
| # else |
| # define R(x) (((x) + 16384)>>15) |
| # define RENAME(x) x ## _s16 |
| # endif |
| #elif defined(TEMPLATE_REMATRIX_S32) |
| # define R(x) (((x) + 16384)>>15) |
| # define SAMPLE int32_t |
| # define COEFF int |
| # define INTER int64_t |
| # define RENAME(x) x ## _s32 |
| #endif |
| |
| typedef void (RENAME(mix_any_func_type))(SAMPLE **out, const SAMPLE **in1, COEFF *coeffp, integer len); |
| |
| static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, COEFF *coeffp, integer index1, integer index2, integer len){ |
| int i; |
| INTER coeff1 = coeffp[index1]; |
| INTER coeff2 = coeffp[index2]; |
| |
| for(i=0; i<len; i++) |
| out[i] = R(coeff1*in1[i] + coeff2*in2[i]); |
| } |
| |
| static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, COEFF *coeffp, integer index, integer len){ |
| int i; |
| INTER coeff = coeffp[index]; |
| for(i=0; i<len; i++) |
| out[i] = R(coeff*in[i]); |
| } |
| |
| static void RENAME(mix6to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, integer len){ |
| int i; |
| |
| for(i=0; i<len; i++) { |
| INTER t = in[2][i]*(INTER)coeffp[0*6+2] + in[3][i]*(INTER)coeffp[0*6+3]; |
| out[0][i] = R(t + in[0][i]*(INTER)coeffp[0*6+0] + in[4][i]*(INTER)coeffp[0*6+4]); |
| out[1][i] = R(t + in[1][i]*(INTER)coeffp[1*6+1] + in[5][i]*(INTER)coeffp[1*6+5]); |
| } |
| } |
| |
| static void RENAME(mix8to2)(SAMPLE **out, const SAMPLE **in, COEFF *coeffp, integer len){ |
| int i; |
| |
| for(i=0; i<len; i++) { |
| INTER t = in[2][i]*(INTER)coeffp[0*8+2] + in[3][i]*(INTER)coeffp[0*8+3]; |
| out[0][i] = R(t + in[0][i]*(INTER)coeffp[0*8+0] + in[4][i]*(INTER)coeffp[0*8+4] + in[6][i]*(INTER)coeffp[0*8+6]); |
| out[1][i] = R(t + in[1][i]*(INTER)coeffp[1*8+1] + in[5][i]*(INTER)coeffp[1*8+5] + in[7][i]*(INTER)coeffp[1*8+7]); |
| } |
| } |
| |
| static RENAME(mix_any_func_type) *RENAME(get_mix_any_func)(SwrContext *s){ |
| if( s->out_ch_layout == AV_CH_LAYOUT_STEREO && (s->in_ch_layout == AV_CH_LAYOUT_5POINT1 || s->in_ch_layout == AV_CH_LAYOUT_5POINT1_BACK) |
| && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3] |
| && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4] |
| ) |
| return RENAME(mix6to2); |
| |
| if( s->out_ch_layout == AV_CH_LAYOUT_STEREO && s->in_ch_layout == AV_CH_LAYOUT_7POINT1 |
| && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3] |
| && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4] |
| && !s->matrix[0][7] && !s->matrix[1][6] |
| ) |
| return RENAME(mix8to2); |
| |
| return NULL; |
| } |
| |
| #undef R |
| #undef SAMPLE |
| #undef COEFF |
| #undef INTER |
| #undef RENAME |