mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
115 lines
4.2 KiB
C
115 lines
4.2 KiB
C
/*
|
|
* 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 ( !av_channel_layout_compare(&s->out_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO)
|
|
&& ( !av_channel_layout_compare(&s->in_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_5POINT1)
|
|
|| !av_channel_layout_compare(&s->in_ch_layout, &(AVChannelLayout)AV_CHANNEL_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 ( !av_channel_layout_compare(&s->out_ch_layout, &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO)
|
|
&& !av_channel_layout_compare(&s->in_ch_layout, &(AVChannelLayout)AV_CHANNEL_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
|