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boo/soxr/src/soxr.c

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/* SoX Resampler Library Copyright (c) 2007-18 robs@users.sourceforge.net
* Licence for this file: LGPL v2.1 See LICENCE for details. */
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "soxr.h"
#include "data-io.h"
#include "internal.h"
#if AVUTIL_FOUND
#include <libavutil/cpu.h>
#endif
#if WITH_DEV_TRACE
#include <stdarg.h>
#include <stdio.h>
int _soxr_trace_level;
void _soxr_trace(char const * fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
fputc('\n', stderr);
va_end(args);
}
#endif
char const * soxr_version(void)
{
return "libsoxr-" SOXR_THIS_VERSION_STR;
}
#include "cb_t.h"
typedef void sample_t; /* float or double */
typedef void * resampler_t; /* For one channel. */
typedef void * resampler_shared_t; /* Between channels. */
typedef void (* deinterleave_t)(sample_t * * dest,
soxr_datatype_t data_type, void const * * src0, size_t n, unsigned ch);
typedef size_t (* interleave_t)(soxr_datatype_t data_type, void * * dest,
sample_t const * const * src, size_t, unsigned, unsigned long *);
struct soxr {
unsigned num_channels;
double io_ratio;
soxr_error_t error;
soxr_quality_spec_t q_spec;
soxr_io_spec_t io_spec;
soxr_runtime_spec_t runtime_spec;
void * input_fn_state;
soxr_input_fn_t input_fn;
size_t max_ilen;
resampler_shared_t shared;
resampler_t * resamplers;
control_block_t control_block;
deinterleave_t deinterleave;
interleave_t interleave;
void * * channel_ptrs;
size_t clips;
unsigned long seed;
int flushing;
};
#if WITH_CR32 || WITH_CR32S || WITH_CR64 || WITH_CR64S
#include "filter.h"
#else
#define lsx_to_3dB(x) ((x)/(x))
#endif
soxr_quality_spec_t soxr_quality_spec(unsigned long recipe, unsigned long flags)
{
soxr_quality_spec_t spec, * p = &spec;
unsigned q = recipe & 0xf; /* TODO: move to soxr-lsr.c: */
unsigned quality = q > SOXR_LSR2Q+2? SOXR_VHQ : q > SOXR_LSR2Q? SOXR_QQ : q;
double rej;
memset(p, 0, sizeof(*p));
if (quality > SOXR_PRECISIONQ) {
p->e = "invalid quality type";
return spec;
}
flags |= quality < SOXR_LSR0Q ? RESET_ON_CLEAR : 0;
p->phase_response = "\62\31\144"[(recipe & 0x30)>>4];
p->stopband_begin = 1;
p->precision =
quality == SOXR_QQ ? 0 :
quality <= SOXR_16_BITQ ? 16 :
quality <= SOXR_32_BITQ ? 4 + quality * 4 :
quality <= SOXR_LSR2Q ? 55 - quality * 4 : /* TODO: move to soxr-lsr.c */
0;
rej = p->precision * linear_to_dB(2.);
p->flags = flags;
if (quality <= SOXR_32_BITQ || quality == SOXR_PRECISIONQ) {
#define LOW_Q_BW0 (1385 / 2048.) /* 0.67625 rounded to be a FP exact. */
p->passband_end = quality == 1? LOW_Q_BW0 : 1 - .05 / lsx_to_3dB(rej);
if (quality <= 2)
p->flags &= ~SOXR_ROLLOFF_NONE, p->flags |= SOXR_ROLLOFF_MEDIUM;
}
else { /* TODO: move to soxr-lsr.c */
static float const bw[] = {.931f, .832f, .663f};
p->passband_end = bw[quality - SOXR_LSR0Q];
if (quality == SOXR_LSR2Q) {
p->flags &= ~SOXR_ROLLOFF_NONE;
p->flags |= SOXR_ROLLOFF_LSR2Q | SOXR_PROMOTE_TO_LQ;
}
}
if (recipe & SOXR_STEEP_FILTER)
p->passband_end = 1 - .01 / lsx_to_3dB(rej);
return spec;
}
char const * soxr_engine(soxr_t p)
{
return resampler_id();
}
size_t * soxr_num_clips(soxr_t p)
{
return &p->clips;
}
soxr_error_t soxr_error(soxr_t p)
{
return p->error;
}
soxr_runtime_spec_t soxr_runtime_spec(unsigned num_threads)
{
soxr_runtime_spec_t spec, * p = &spec;
memset(p, 0, sizeof(*p));
p->log2_min_dft_size = 10;
p->log2_large_dft_size = 17;
p->coef_size_kbytes = 400;
p->num_threads = num_threads;
return spec;
}
soxr_io_spec_t soxr_io_spec(
soxr_datatype_t itype,
soxr_datatype_t otype)
{
soxr_io_spec_t spec, * p = &spec;
memset(p, 0, sizeof(*p));
if ((itype | otype) >= SOXR_SPLIT * 2)
p->e = "invalid io datatype(s)";
else {
p->itype = itype;
p->otype = otype;
p->scale = 1;
}
return spec;
}
#if (WITH_CR32S && WITH_CR32) || (WITH_CR64S && WITH_CR64)
#if defined __GNUC__ && defined __x86_64__
#define CPUID(type, eax_, ebx_, ecx_, edx_) \
__asm__ __volatile__ ( \
"cpuid \n\t" \
: "=a" (eax_), "=b" (ebx_), "=c" (ecx_), "=d" (edx_) \
: "a" (type), "c" (0));
#elif defined __GNUC__ && defined __i386__
#define CPUID(type, eax_, ebx_, ecx_, edx_) \
__asm__ __volatile__ ( \
"mov %%ebx, %%edi \n\t" \
"cpuid \n\t" \
"xchg %%edi, %%ebx \n\t" \
: "=a" (eax_), "=D" (ebx_), "=c" (ecx_), "=d" (edx_) \
: "a" (type), "c" (0));
#elif defined _M_X64 && defined _MSC_VER && defined __clang__
#include <intrin.h>
#define CPUID(type, eax_, ebx_, ecx_, edx_) \
__cpuid_count(type, 0, eax_, ebx_, ecx_, edx_)
#elif defined _M_X64 && defined _MSC_VER && _MSC_VER > 1500
void __cpuidex(int CPUInfo[4], int info_type, int ecxvalue);
#pragma intrinsic(__cpuidex)
#define CPUID(type, eax_, ebx_, ecx_, edx_) do { \
int regs[4]; \
__cpuidex(regs, type, 0); \
eax_ = regs[0], ebx_ = regs[1], ecx_ = regs[2], edx_ = regs[3]; \
} while(0)
#elif defined _M_X64 && defined _MSC_VER
void __cpuidex(int CPUInfo[4], int info_type);
#pragma intrinsic(__cpuidex)
#define CPUID(type, eax_, ebx_, ecx_, edx_) do { \
int regs[4]; \
__cpuidex(regs, type); \
eax_ = regs[0], ebx_ = regs[1], ecx_ = regs[2], edx_ = regs[3]; \
} while(0)
#elif defined _M_IX86 && defined _MSC_VER
#define CPUID(type, eax_, ebx_, ecx_, edx_) \
__asm pushad \
__asm mov eax, type \
__asm xor ecx, ecx \
__asm cpuid \
__asm mov eax_, eax \
__asm mov ebx_, ebx \
__asm mov ecx_, ecx \
__asm mov edx_, edx \
__asm popad
#endif
#endif
#if WITH_CR32S && WITH_CR32
static bool cpu_has_simd32(void)
{
#if defined __x86_64__ || defined _M_X64
return true;
#elif defined __i386__ || defined _M_IX86
enum {SSE = 1 << 25, SSE2 = 1 << 26};
unsigned eax_, ebx_, ecx_, edx_;
CPUID(1, eax_, ebx_, ecx_, edx_);
return (edx_ & (SSE|SSE2)) != 0;
#elif defined AV_CPU_FLAG_NEON
return !!(av_get_cpu_flags() & AV_CPU_FLAG_NEON);
#else
return false;
#endif
}
static bool should_use_simd32(void)
{
char const * e;
return ((e = getenv("SOXR_USE_SIMD" )))? !!atoi(e) :
((e = getenv("SOXR_USE_SIMD32")))? !!atoi(e) : cpu_has_simd32();
}
#else
#define should_use_simd32() true
#endif
#if WITH_CR64S && WITH_CR64
#if defined __GNUC__
#define XGETBV(type, eax_, edx_) \
__asm__ __volatile__ ( \
".byte 0x0f, 0x01, 0xd0\n" \
: "=a"(eax_), "=d"(edx_) : "c" (type));
#elif defined _M_X64 && defined _MSC_FULL_VER && _MSC_FULL_VER >= 160040219
#include <immintrin.h>
#define XGETBV(type, eax_, edx_) do { \
union {uint64_t x; uint32_t y[2];} a = {_xgetbv(0)}; \
eax_ = a.y[0], edx_ = a.y[1]; \
} while(0)
#elif defined _M_IX86 && defined _MSC_VER
#define XGETBV(type, eax_, edx_) \
__asm pushad \
__asm mov ecx, type \
__asm _emit 0x0f \
__asm _emit 0x01 \
__asm _emit 0xd0 \
__asm mov eax_, eax \
__asm mov edx_, edx \
__asm popad
#else
#define XGETBV(type, eax_, edx_) eax_ = edx_ = 0
#endif
static bool cpu_has_simd64(void)
{
enum {OSXSAVE = 1 << 27, AVX = 1 << 28};
unsigned eax_, ebx_, ecx_, edx_;
CPUID(1, eax_, ebx_, ecx_, edx_);
if ((ecx_ & (OSXSAVE|AVX)) == (OSXSAVE|AVX)) {
XGETBV(0, eax_, edx_);
return (eax_ & 6) == 6;
}
return false;
}
static bool should_use_simd64(void)
{
char const * e;
return ((e = getenv("SOXR_USE_SIMD" )))? !!atoi(e) :
((e = getenv("SOXR_USE_SIMD64")))? !!atoi(e) : cpu_has_simd64();
}
#else
#define should_use_simd64() true
#endif
extern control_block_t
_soxr_rate32_cb,
_soxr_rate32s_cb,
_soxr_rate64_cb,
_soxr_rate64s_cb,
_soxr_vr32_cb;
static void runtime_num(char const * env_name,
int min, int max, unsigned * field)
{
char const * e = getenv(env_name);
if (e) {
int i = atoi(e);
if (i >= min && i <= max)
*field = (unsigned)i;
}
}
static void runtime_flag(char const * env_name,
unsigned n_bits, unsigned n_shift, unsigned long * flags)
{
char const * e = getenv(env_name);
if (e) {
int i = atoi(e);
unsigned long mask = (1UL << n_bits) - 1;
if (i >= 0 && i <= (int)mask)
*flags &= ~(mask << n_shift), *flags |= ((unsigned long)i << n_shift);
}
}
soxr_t soxr_create(
double input_rate, double output_rate,
unsigned num_channels,
soxr_error_t * error0,
soxr_io_spec_t const * io_spec,
soxr_quality_spec_t const * q_spec,
soxr_runtime_spec_t const * runtime_spec)
{
double io_ratio = output_rate!=0? input_rate!=0?
input_rate / output_rate : -1 : input_rate!=0? -1 : 0;
static const float datatype_full_scale[] = {1, 1, 65536.*32768, 32768};
soxr_t p = 0;
soxr_error_t error = 0;
#if WITH_DEV_TRACE
#define _(x) (char)(sizeof(x)>=10? 'a'+(char)(sizeof(x)-10):'0'+(char)sizeof(x))
char const * e = getenv("SOXR_TRACE");
_soxr_trace_level = e? atoi(e) : 0;
{
static char const arch[] = {_(char), _(short), _(int), _(long), _(long long)
, ' ', _(float), _(double), _(long double)
, ' ', _(int *), _(int (*)(int))
, ' ', HAVE_BIGENDIAN ? 'B' : 'L'
#if defined _OPENMP
, ' ', 'O', 'M', 'P'
#endif
, 0};
#undef _
lsx_debug("arch: %s", arch);
}
#endif
if (q_spec && q_spec->e) error = q_spec->e;
else if (io_spec && (io_spec->itype | io_spec->otype) >= SOXR_SPLIT * 2)
error = "invalid io datatype(s)";
if (!error && !(p = calloc(sizeof(*p), 1))) error = "malloc failed";
if (p) {
control_block_t * control_block;
p->q_spec = q_spec? *q_spec : soxr_quality_spec(SOXR_HQ, 0);
if (q_spec) { /* Backwards compatibility with original API: */
if (p->q_spec.passband_end > 2)
p->q_spec.passband_end /= 100;
if (p->q_spec.stopband_begin > 2)
p->q_spec.stopband_begin = 2 - p->q_spec.stopband_begin / 100;
}
p->io_ratio = io_ratio;
p->num_channels = num_channels;
if (io_spec)
p->io_spec = *io_spec;
else
p->io_spec.scale = 1;
p->runtime_spec = runtime_spec? *runtime_spec : soxr_runtime_spec(1);
runtime_num("SOXR_MIN_DFT_SIZE", 8, 15, &p->runtime_spec.log2_min_dft_size);
runtime_num("SOXR_LARGE_DFT_SIZE", 8, 20, &p->runtime_spec.log2_large_dft_size);
runtime_num("SOXR_COEFS_SIZE", 100, 800, &p->runtime_spec.coef_size_kbytes);
runtime_num("SOXR_NUM_THREADS", 0, 64, &p->runtime_spec.num_threads);
runtime_flag("SOXR_COEF_INTERP", 2, 0, &p->runtime_spec.flags);
runtime_flag("SOXR_STRICT_BUF", 1, 2, &p->runtime_spec.flags);
runtime_flag("SOXR_NOSMALLINTOPT", 1, 3, &p->runtime_spec.flags);
p->io_spec.scale *= datatype_full_scale[p->io_spec.otype & 3] /
datatype_full_scale[p->io_spec.itype & 3];
p->seed = (unsigned long)time(0) ^ (unsigned long)(size_t)p;
#if WITH_CR32 || WITH_CR32S || WITH_VR32
if (0
#if WITH_VR32
|| ((!WITH_CR32 && !WITH_CR32S) || (p->q_spec.flags & SOXR_VR))
#endif
#if WITH_CR32 || WITH_CR32S
|| !(WITH_CR64 || WITH_CR64S) || (p->q_spec.precision <= 20 && !(p->q_spec.flags & SOXR_DOUBLE_PRECISION))
#endif
) {
p->deinterleave = (deinterleave_t)_soxr_deinterleave_f;
p->interleave = (interleave_t)_soxr_interleave_f;
control_block =
#if WITH_VR32
((!WITH_CR32 && !WITH_CR32S) || (p->q_spec.flags & SOXR_VR))? &_soxr_vr32_cb :
#endif
#if WITH_CR32S
!WITH_CR32 || should_use_simd32()? &_soxr_rate32s_cb :
#endif
&_soxr_rate32_cb;
}
#if WITH_CR64 || WITH_CR64S
else
#endif
#endif
#if WITH_CR64 || WITH_CR64S
{
p->deinterleave = (deinterleave_t)_soxr_deinterleave;
p->interleave = (interleave_t)_soxr_interleave;
control_block =
#if WITH_CR64S
!WITH_CR64 || should_use_simd64()? &_soxr_rate64s_cb :
#endif
&_soxr_rate64_cb;
}
#endif
memcpy(&p->control_block, control_block, sizeof(p->control_block));
if (p->num_channels && io_ratio!=0)
error = soxr_set_io_ratio(p, io_ratio, 0);
}
if (error)
soxr_delete(p), p = 0;
if (error0)
*error0 = error;
return p;
}
soxr_error_t soxr_set_input_fn(soxr_t p,
soxr_input_fn_t input_fn, void * input_fn_state, size_t max_ilen)
{
p->input_fn_state = input_fn_state;
p->input_fn = input_fn;
p->max_ilen = max_ilen? max_ilen : (size_t)-1;
return 0;
}
static void soxr_delete0(soxr_t p)
{
unsigned i;
if (p->resamplers) for (i = 0; i < p->num_channels; ++i) {
if (p->resamplers[i])
resampler_close(p->resamplers[i]);
free(p->resamplers[i]);
}
free(p->resamplers);
free(p->channel_ptrs);
free(p->shared);
memset(p, 0, sizeof(*p));
}
double soxr_delay(soxr_t p)
{
return
(p && !p->error && p->resamplers)? resampler_delay(p->resamplers[0]) : 0;
}
static soxr_error_t fatal_error(soxr_t p, soxr_error_t error)
{
soxr_delete0(p);
return p->error = error;
}
static soxr_error_t initialise(soxr_t p)
{
unsigned i;
size_t shared_size, channel_size;
resampler_sizes(&shared_size, &channel_size);
p->channel_ptrs = calloc(sizeof(*p->channel_ptrs), p->num_channels);
p->shared = calloc(shared_size, 1);
p->resamplers = calloc(sizeof(*p->resamplers), p->num_channels);
if (!p->shared || !p->channel_ptrs || !p->resamplers)
return fatal_error(p, "malloc failed");
for (i = 0; i < p->num_channels; ++i) {
soxr_error_t error;
if (!(p->resamplers[i] = calloc(channel_size, 1)))
return fatal_error(p, "malloc failed");
error = resampler_create(
p->resamplers[i],
p->shared,
p->io_ratio,
&p->q_spec,
&p->runtime_spec,
p->io_spec.scale);
if (error)
return fatal_error(p, error);
}
return 0;
}
soxr_error_t soxr_set_num_channels(soxr_t p, unsigned num_channels)
{
if (!p) return "invalid soxr_t pointer";
if (num_channels == p->num_channels) return p->error;
if (!num_channels) return "invalid # of channels";
if (p->resamplers) return "# of channels can't be changed";
p->num_channels = num_channels;
return soxr_set_io_ratio(p, p->io_ratio, 0);
}
soxr_error_t soxr_set_io_ratio(soxr_t p, double io_ratio, size_t slew_len)
{
unsigned i;
soxr_error_t error;
if (!p) return "invalid soxr_t pointer";
if ((error = p->error)) return error;
if (!p->num_channels) return "must set # channels before O/I ratio";
if (io_ratio <= 0) return "I/O ratio out-of-range";
if (!p->channel_ptrs) {
p->io_ratio = io_ratio;
return initialise(p);
}
if (resampler_set_io_ratio) {
for (i = 0; !error && i < p->num_channels; ++i)
resampler_set_io_ratio(p->resamplers[i], io_ratio, slew_len);
return error;
}
return fabs(p->io_ratio - io_ratio) < 1e-15? 0 :
"varying O/I ratio is not supported with this quality level";
}
void soxr_delete(soxr_t p)
{
if (p)
soxr_delete0(p), free(p);
}
soxr_error_t soxr_clear(soxr_t p) /* TODO: this, properly. */
{
if (p) {
struct soxr tmp = *p;
soxr_delete0(p);
memset(p, 0, sizeof(*p));
p->input_fn = tmp.input_fn;
p->runtime_spec = tmp.runtime_spec;
p->q_spec = tmp.q_spec;
p->io_spec = tmp.io_spec;
p->num_channels = tmp.num_channels;
p->input_fn_state = tmp.input_fn_state;
memcpy(&p->control_block, &tmp.control_block, sizeof(p->control_block));
p->deinterleave = tmp.deinterleave;
p->interleave = tmp.interleave;
return (p->q_spec.flags & RESET_ON_CLEAR)?
soxr_set_io_ratio(p, tmp.io_ratio, 0) : 0;
}
return "invalid soxr_t pointer";
}
static void soxr_input_1ch(soxr_t p, unsigned i, soxr_cbuf_t src, size_t len)
{
sample_t * dest = resampler_input(p->resamplers[i], NULL, len);
(*p->deinterleave)(&dest, p->io_spec.itype, &src, len, 1);
}
static size_t soxr_input(soxr_t p, void const * in, size_t len)
{
bool separated = !!(p->io_spec.itype & SOXR_SPLIT);
unsigned i;
if (!p || p->error) return 0;
if (!in && len) {p->error = "null input buffer pointer"; return 0;}
if (!len) {
p->flushing = true;
return 0;
}
if (separated)
for (i = 0; i < p->num_channels; ++i)
soxr_input_1ch(p, i, ((soxr_cbufs_t)in)[i], len);
else {
for (i = 0; i < p->num_channels; ++i)
p->channel_ptrs[i] = resampler_input(p->resamplers[i], NULL, len);
(*p->deinterleave)(
(sample_t **)p->channel_ptrs, p->io_spec.itype, &in, len, p->num_channels);
}
return len;
}
static size_t soxr_output_1ch(soxr_t p, unsigned i, soxr_buf_t dest, size_t len, bool separated)
{
sample_t const * src;
if (p->flushing)
resampler_flush(p->resamplers[i]);
resampler_process(p->resamplers[i], len);
src = resampler_output(p->resamplers[i], NULL, &len);
if (separated)
p->clips += (p->interleave)(p->io_spec.otype, &dest, &src,
len, 1, (p->io_spec.flags & SOXR_NO_DITHER)? 0 : &p->seed);
else p->channel_ptrs[i] = (void /* const */ *)src;
return len;
}
static size_t soxr_output_no_callback(soxr_t p, soxr_buf_t out, size_t len)
{
unsigned u;
size_t done = 0;
bool separated = !!(p->io_spec.otype & SOXR_SPLIT);
#if defined _OPENMP
int i;
if (!p->runtime_spec.num_threads && p->num_channels > 1)
#pragma omp parallel for
for (i = 0; i < (int)p->num_channels; ++i) {
size_t done1;
done1 = soxr_output_1ch(p, (unsigned)i, ((soxr_bufs_t)out)[i], len, separated);
if (!i)
done = done1;
} else
#endif
for (u = 0; u < p->num_channels; ++u)
done = soxr_output_1ch(p, u, ((soxr_bufs_t)out)[u], len, separated);
if (!separated)
p->clips += (p->interleave)(p->io_spec.otype, &out, (sample_t const * const *)p->channel_ptrs,
done, p->num_channels, (p->io_spec.flags & SOXR_NO_DITHER)? 0 : &p->seed);
return done;
}
size_t soxr_output(soxr_t p, void * out, size_t len0)
{
size_t odone, odone0 = 0, olen = len0, osize, idone;
size_t ilen = min(p->max_ilen, (size_t)ceil((double)olen *p->io_ratio));
void const * in = out; /* Set to !=0, so that caller may leave unset. */
bool was_flushing;
if (!p || p->error) return 0;
if (!out && len0) {p->error = "null output buffer pointer"; return 0;}
do {
odone = soxr_output_no_callback(p, out, olen);
odone0 += odone;
if (odone0 == len0 || !p->input_fn || p->flushing)
break;
osize = soxr_datatype_size(p->io_spec.otype) * p->num_channels;
out = (char *)out + osize * odone;
olen -= odone;
idone = p->input_fn(p->input_fn_state, &in, ilen);
was_flushing = p->flushing;
if (!in)
p->error = "input function reported failure";
else soxr_input(p, in, idone);
} while (odone || idone || (!was_flushing && p->flushing));
return odone0;
}
static size_t soxr_i_for_o(soxr_t p, size_t olen, size_t ilen)
{
size_t result;
#if 0
if (p->runtime_spec.flags & SOXR_STRICT_BUFFERING)
result = rate_i_for_o(p->resamplers[0], olen);
else
#endif
result = (size_t)ceil((double)olen * p->io_ratio);
return min(result, ilen);
}
#if 0
static size_t soxr_o_for_i(soxr_t p, size_t ilen, size_t olen)
{
size_t result = (size_t)ceil((double)ilen / p->io_ratio);
return min(result, olen);
}
#endif
soxr_error_t soxr_process(soxr_t p,
void const * in , size_t ilen0, size_t * idone0,
void * out, size_t olen , size_t * odone0)
{
size_t ilen, idone, odone = 0;
unsigned u;
bool flush_requested = false;
if (!p) return "null pointer";
if (!in)
flush_requested = true, ilen = ilen0 = 0;
else {
if ((ptrdiff_t)ilen0 < 0)
flush_requested = true, ilen0 = ~ilen0;
if (idone0 && (1 || flush_requested))
ilen = soxr_i_for_o(p, olen, ilen0);
else
ilen = ilen0/*, olen = soxr_o_for_i(p, ilen, olen)*/;
}
p->flushing |= ilen == ilen0 && flush_requested;
if (!out && !in)
idone = ilen;
else if (p->io_spec.itype & p->io_spec.otype & SOXR_SPLIT) { /* Both i & o */
#if defined _OPENMP
int i;
if (!p->runtime_spec.num_threads && p->num_channels > 1)
#pragma omp parallel for
for (i = 0; i < (int)p->num_channels; ++i) {
size_t done;
if (in)
soxr_input_1ch(p, (unsigned)i, ((soxr_cbufs_t)in)[i], ilen);
done = soxr_output_1ch(p, (unsigned)i, ((soxr_bufs_t)out)[i], olen, true);
if (!i)
odone = done;
} else
#endif
for (u = 0; u < p->num_channels; ++u) {
if (in)
soxr_input_1ch(p, u, ((soxr_cbufs_t)in)[u], ilen);
odone = soxr_output_1ch(p, u, ((soxr_bufs_t)out)[u], olen, true);
}
idone = ilen;
}
else {
idone = ilen? soxr_input (p, in , ilen) : 0;
odone = soxr_output(p, out, olen);
}
if (idone0) *idone0 = idone;
if (odone0) *odone0 = odone;
return p->error;
}
soxr_error_t soxr_oneshot(
double irate, double orate,
unsigned num_channels,
void const * in , size_t ilen, size_t * idone,
void * out, size_t olen, size_t * odone,
soxr_io_spec_t const * io_spec,
soxr_quality_spec_t const * q_spec,
soxr_runtime_spec_t const * runtime_spec)
{
soxr_t resampler;
soxr_error_t error = q_spec? q_spec->e : 0;
if (!error) {
soxr_quality_spec_t q_spec1;
if (!q_spec)
q_spec1 = soxr_quality_spec(SOXR_LQ, 0), q_spec = &q_spec1;
resampler = soxr_create(irate, orate, num_channels,
&error, io_spec, q_spec, runtime_spec);
}
if (!error) {
error = soxr_process(resampler, in, ~ilen, idone, out, olen, odone);
soxr_delete(resampler);
}
return error;
}
soxr_error_t soxr_set_error(soxr_t p, soxr_error_t error)
{
if (!p) return "null pointer";
if (!p->error && p->error != error) return p->error;
p->error = error;
return 0;
}
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