7128a35f8c
DSP bits of swri_resample go into their own mini-DSP functions; DSP init goes from a per-call branch in multiple_resample to a proper DSP init routine; x86 bits go into x86/; swri_resample() moves out of resample_template.c into resample.c because it's independent of DSP code or sample type; multiple_resample() is simplified. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
223 lines
6.9 KiB
C
223 lines
6.9 KiB
C
/*
|
|
* audio resampling
|
|
* Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* audio resampling
|
|
* @author Michael Niedermayer <michaelni@gmx.at>
|
|
*/
|
|
|
|
#if defined(TEMPLATE_RESAMPLE_DBL) \
|
|
|| defined(TEMPLATE_RESAMPLE_DBL_SSE2)
|
|
|
|
# define FILTER_SHIFT 0
|
|
# define DELEM double
|
|
# define FELEM double
|
|
# define FELEM2 double
|
|
# define FELEML double
|
|
# define OUT(d, v) d = v
|
|
|
|
# if defined(TEMPLATE_RESAMPLE_DBL)
|
|
# define RENAME(N) N ## _double
|
|
# elif defined(TEMPLATE_RESAMPLE_DBL_SSE2)
|
|
# define COMMON_CORE COMMON_CORE_DBL_SSE2
|
|
# define LINEAR_CORE LINEAR_CORE_DBL_SSE2
|
|
# define RENAME(N) N ## _double_sse2
|
|
# endif
|
|
|
|
#elif defined(TEMPLATE_RESAMPLE_FLT) \
|
|
|| defined(TEMPLATE_RESAMPLE_FLT_SSE) \
|
|
|| defined(TEMPLATE_RESAMPLE_FLT_AVX)
|
|
|
|
# define FILTER_SHIFT 0
|
|
# define DELEM float
|
|
# define FELEM float
|
|
# define FELEM2 float
|
|
# define FELEML float
|
|
# define OUT(d, v) d = v
|
|
|
|
# if defined(TEMPLATE_RESAMPLE_FLT)
|
|
# define RENAME(N) N ## _float
|
|
# elif defined(TEMPLATE_RESAMPLE_FLT_SSE)
|
|
# define COMMON_CORE COMMON_CORE_FLT_SSE
|
|
# define LINEAR_CORE LINEAR_CORE_FLT_SSE
|
|
# define RENAME(N) N ## _float_sse
|
|
# elif defined(TEMPLATE_RESAMPLE_FLT_AVX)
|
|
# define COMMON_CORE COMMON_CORE_FLT_AVX
|
|
# define LINEAR_CORE LINEAR_CORE_FLT_AVX
|
|
# define RENAME(N) N ## _float_avx
|
|
# endif
|
|
|
|
#elif defined(TEMPLATE_RESAMPLE_S32)
|
|
# define RENAME(N) N ## _int32
|
|
# define FILTER_SHIFT 30
|
|
# define DELEM int32_t
|
|
# define FELEM int32_t
|
|
# define FELEM2 int64_t
|
|
# define FELEML int64_t
|
|
# define FELEM_MAX INT32_MAX
|
|
# define FELEM_MIN INT32_MIN
|
|
# define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
|
|
d = (uint64_t)(v + 0x80000000) > 0xFFFFFFFF ? (v>>63) ^ 0x7FFFFFFF : v
|
|
|
|
#elif defined(TEMPLATE_RESAMPLE_S16) \
|
|
|| defined(TEMPLATE_RESAMPLE_S16_MMX2) \
|
|
|| defined(TEMPLATE_RESAMPLE_S16_SSE2)
|
|
|
|
# define FILTER_SHIFT 15
|
|
# define DELEM int16_t
|
|
# define FELEM int16_t
|
|
# define FELEM2 int32_t
|
|
# define FELEML int64_t
|
|
# define FELEM_MAX INT16_MAX
|
|
# define FELEM_MIN INT16_MIN
|
|
# define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
|
|
d = (unsigned)(v + 32768) > 65535 ? (v>>31) ^ 32767 : v
|
|
|
|
# if defined(TEMPLATE_RESAMPLE_S16)
|
|
# define RENAME(N) N ## _int16
|
|
# elif defined(TEMPLATE_RESAMPLE_S16_MMX2)
|
|
# define COMMON_CORE COMMON_CORE_INT16_MMX2
|
|
# define LINEAR_CORE LINEAR_CORE_INT16_MMX2
|
|
# define RENAME(N) N ## _int16_mmx2
|
|
# elif defined(TEMPLATE_RESAMPLE_S16_SSE2)
|
|
# define COMMON_CORE COMMON_CORE_INT16_SSE2
|
|
# define LINEAR_CORE LINEAR_CORE_INT16_SSE2
|
|
# define RENAME(N) N ## _int16_sse2
|
|
# endif
|
|
|
|
#endif
|
|
|
|
#if DO_RESAMPLE_ONE
|
|
static void RENAME(resample_one)(DELEM *dst, const DELEM *src,
|
|
int dst_size, int64_t index2, int64_t incr)
|
|
{
|
|
int dst_index;
|
|
|
|
for (dst_index = 0; dst_index < dst_size; dst_index++) {
|
|
dst[dst_index] = src[index2 >> 32];
|
|
index2 += incr;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int RENAME(resample_common)(ResampleContext *c,
|
|
DELEM *dst, const DELEM *src,
|
|
int n, int update_ctx)
|
|
{
|
|
int dst_index;
|
|
int index= c->index;
|
|
int frac= c->frac;
|
|
int dst_incr_frac= c->dst_incr % c->src_incr;
|
|
int dst_incr= c->dst_incr / c->src_incr;
|
|
int sample_index = index >> c->phase_shift;
|
|
|
|
index &= c->phase_mask;
|
|
for (dst_index = 0; dst_index < n; dst_index++) {
|
|
FELEM *filter = ((FELEM *) c->filter_bank) + c->filter_alloc * index;
|
|
|
|
#ifdef COMMON_CORE
|
|
COMMON_CORE
|
|
#else
|
|
FELEM2 val=0;
|
|
int i;
|
|
for (i = 0; i < c->filter_length; i++) {
|
|
val += src[sample_index + i] * (FELEM2)filter[i];
|
|
}
|
|
OUT(dst[dst_index], val);
|
|
#endif
|
|
|
|
frac += dst_incr_frac;
|
|
index += dst_incr;
|
|
if (frac >= c->src_incr) {
|
|
frac -= c->src_incr;
|
|
index++;
|
|
}
|
|
sample_index += index >> c->phase_shift;
|
|
index &= c->phase_mask;
|
|
}
|
|
|
|
if(update_ctx){
|
|
c->frac= frac;
|
|
c->index= index;
|
|
}
|
|
|
|
return sample_index;
|
|
}
|
|
|
|
static int RENAME(resample_linear)(ResampleContext *c,
|
|
DELEM *dst, const DELEM *src,
|
|
int n, int update_ctx)
|
|
{
|
|
int dst_index;
|
|
int index= c->index;
|
|
int frac= c->frac;
|
|
int dst_incr_frac= c->dst_incr % c->src_incr;
|
|
int dst_incr= c->dst_incr / c->src_incr;
|
|
int sample_index = index >> c->phase_shift;
|
|
|
|
index &= c->phase_mask;
|
|
for (dst_index = 0; dst_index < n; dst_index++) {
|
|
FELEM *filter = ((FELEM *) c->filter_bank) + c->filter_alloc * index;
|
|
FELEM2 val=0, v2 = 0;
|
|
|
|
#ifdef LINEAR_CORE
|
|
LINEAR_CORE
|
|
#else
|
|
int i;
|
|
for (i = 0; i < c->filter_length; i++) {
|
|
val += src[sample_index + i] * (FELEM2)filter[i];
|
|
v2 += src[sample_index + i] * (FELEM2)filter[i + c->filter_alloc];
|
|
}
|
|
#endif
|
|
val += (v2 - val) * (FELEML) frac / c->src_incr;
|
|
OUT(dst[dst_index], val);
|
|
|
|
frac += dst_incr_frac;
|
|
index += dst_incr;
|
|
if (frac >= c->src_incr) {
|
|
frac -= c->src_incr;
|
|
index++;
|
|
}
|
|
sample_index += index >> c->phase_shift;
|
|
index &= c->phase_mask;
|
|
}
|
|
|
|
if(update_ctx){
|
|
c->frac= frac;
|
|
c->index= index;
|
|
}
|
|
|
|
return sample_index;
|
|
}
|
|
|
|
#undef COMMON_CORE
|
|
#undef LINEAR_CORE
|
|
#undef RENAME
|
|
#undef FILTER_SHIFT
|
|
#undef DELEM
|
|
#undef FELEM
|
|
#undef FELEM2
|
|
#undef FELEML
|
|
#undef FELEM_MAX
|
|
#undef FELEM_MIN
|
|
#undef OUT
|