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pipewire/spa/plugins/audioconvert/spa-resample.c
Daniel Baumann 6b016a712f
Adding upstream version 1.4.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-22 21:40:42 +02:00

347 lines
8 KiB
C

/* Spa */
/* SPDX-FileCopyrightText: Copyright © 2020 Wim Taymans */
/* SPDX-License-Identifier: MIT */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <getopt.h>
#include <spa/support/log-impl.h>
#include <spa/debug/mem.h>
#include <spa/utils/string.h>
#include <spa/utils/result.h>
#include <sndfile.h>
SPA_LOG_IMPL(logger);
#include "resample.h"
#define DEFAULT_QUALITY RESAMPLE_DEFAULT_QUALITY
#define MAX_SAMPLES 4096u
struct data {
bool verbose;
int rate;
int format;
int quality;
int cpu_flags;
const char *iname;
SF_INFO iinfo;
SNDFILE *ifile;
const char *oname;
SF_INFO oinfo;
SNDFILE *ofile;
};
#define STR_FMTS "(s8|s16|s32|f32|f64)"
#define OPTIONS "hvr:f:q:c:"
static const struct option long_options[] = {
{ "help", no_argument, NULL, 'h'},
{ "verbose", no_argument, NULL, 'v'},
{ "rate", required_argument, NULL, 'r' },
{ "format", required_argument, NULL, 'f' },
{ "quality", required_argument, NULL, 'q' },
{ "cpuflags", required_argument, NULL, 'c' },
{ NULL, 0, NULL, 0 }
};
static void show_usage(const char *name, bool is_error)
{
FILE *fp;
fp = is_error ? stderr : stdout;
fprintf(fp, "%s [options] <infile> <outfile>\n", name);
fprintf(fp,
" -h, --help Show this help\n"
" -v --verbose Be verbose\n"
"\n");
fprintf(fp,
" -r --rate Output sample rate (default as input)\n"
" -f --format Output sample format %s (default as input)\n"
" -q --quality Resampler quality (default %u)\n"
" -c --cpuflags CPU flags (default 0)\n"
"\n",
STR_FMTS, DEFAULT_QUALITY);
}
static inline const char *
sf_fmt_to_str(int fmt)
{
switch(fmt & SF_FORMAT_SUBMASK) {
case SF_FORMAT_PCM_S8:
return "s8";
case SF_FORMAT_PCM_16:
return "s16";
case SF_FORMAT_PCM_24:
return "s24";
case SF_FORMAT_PCM_32:
return "s32";
case SF_FORMAT_FLOAT:
return "f32";
case SF_FORMAT_DOUBLE:
return "f64";
default:
return "unknown";
}
}
static inline int
sf_str_to_fmt(const char *str)
{
if (!str)
return -1;
if (spa_streq(str, "s8"))
return SF_FORMAT_PCM_S8;
if (spa_streq(str, "s16"))
return SF_FORMAT_PCM_16;
if (spa_streq(str, "s24"))
return SF_FORMAT_PCM_24;
if (spa_streq(str, "s32"))
return SF_FORMAT_PCM_32;
if (spa_streq(str, "f32"))
return SF_FORMAT_FLOAT;
if (spa_streq(str, "f64"))
return SF_FORMAT_DOUBLE;
return -1;
}
static int open_files(struct data *d)
{
int i, count = 0, format = -1;
d->ifile = sf_open(d->iname, SFM_READ, &d->iinfo);
if (d->ifile == NULL) {
fprintf(stderr, "error: failed to open input file \"%s\": %s\n",
d->iname, sf_strerror(NULL));
return -EIO;
}
d->oinfo.channels = d->iinfo.channels;
d->oinfo.samplerate = d->rate > 0 ? d->rate : d->iinfo.samplerate;
d->oinfo.format = d->format > 0 ? d->format : (d->iinfo.format & SF_FORMAT_SUBMASK);
/* try to guess the format from the extension */
if (sf_command(NULL, SFC_GET_FORMAT_MAJOR_COUNT, &count, sizeof(int)) != 0)
count = 0;
for (i = 0; i < count; i++) {
SF_FORMAT_INFO fi;
spa_zero(fi);
fi.format = i;
if (sf_command(NULL, SFC_GET_FORMAT_MAJOR, &fi, sizeof(fi)) != 0)
continue;
if (spa_strendswith(d->oname, fi.extension)) {
format = fi.format;
break;
}
}
if (format == -1)
/* use the same format as the input file otherwise */
format = d->iinfo.format & ~SF_FORMAT_SUBMASK;
if (format == SF_FORMAT_WAV && d->oinfo.channels > 2)
format = SF_FORMAT_WAVEX;
d->oinfo.format |= format;
d->ofile = sf_open(d->oname, SFM_WRITE, &d->oinfo);
if (d->ofile == NULL) {
fprintf(stderr, "error: failed to open output file \"%s\": %s\n",
d->oname, sf_strerror(NULL));
return -EIO;
}
if (d->verbose) {
fprintf(stdout, "input '%s': channels:%d rate:%d format:%s\n",
d->iname, d->iinfo.channels, d->iinfo.samplerate,
sf_fmt_to_str(d->iinfo.format));
fprintf(stdout, "output '%s': channels:%d rate:%d format:%s\n",
d->oname, d->oinfo.channels, d->oinfo.samplerate,
sf_fmt_to_str(d->oinfo.format));
}
return 0;
}
static int close_files(struct data *d)
{
if (d->ifile)
sf_close(d->ifile);
if (d->ofile)
sf_close(d->ofile);
return 0;
}
static int do_conversion(struct data *d)
{
struct resample r;
int channels = d->iinfo.channels;
float in[MAX_SAMPLES * channels];
float out[MAX_SAMPLES * channels];
float ibuf[MAX_SAMPLES * channels];
float obuf[MAX_SAMPLES * channels];
uint32_t in_len, out_len, queued;
uint32_t pin_len, pout_len;
size_t read, written;
const void *src[channels];
void *dst[channels];
uint32_t i;
int res, j, k;
uint32_t flushing = UINT32_MAX;
spa_zero(r);
r.cpu_flags = d->cpu_flags;
r.log = &logger.log;
r.channels = channels;
r.i_rate = d->iinfo.samplerate;
r.o_rate = d->oinfo.samplerate;
r.quality = d->quality < 0 ? DEFAULT_QUALITY : d->quality;
if ((res = resample_native_init(&r)) < 0) {
fprintf(stderr, "can't init converter: %s\n", spa_strerror(res));
return res;
}
for (j = 0; j < channels; j++)
src[j] = &in[MAX_SAMPLES * j];
for (j = 0; j < channels; j++)
dst[j] = &out[MAX_SAMPLES * j];
read = written = queued = 0;
while (true) {
pout_len = out_len = MAX_SAMPLES;
in_len = SPA_MIN(MAX_SAMPLES, resample_in_len(&r, out_len));
in_len -= SPA_MIN(queued, in_len);
if (in_len > 0) {
pin_len = in_len = sf_readf_float(d->ifile, &ibuf[queued * channels], in_len);
read += pin_len;
if (pin_len == 0) {
if (flushing == 0)
break;
if (flushing == UINT32_MAX)
flushing = resample_delay(&r);
pin_len = in_len = SPA_MIN(MAX_SAMPLES, flushing);
flushing -= in_len;
for (k = 0, i = 0; i < pin_len; i++) {
for (j = 0; j < channels; j++)
ibuf[k++] = 0.0;
}
}
}
in_len += queued;
pin_len = in_len;
for (k = 0, i = 0; i < pin_len; i++) {
for (j = 0; j < channels; j++) {
in[MAX_SAMPLES * j + i] = ibuf[k++];
}
}
resample_process(&r, src, &pin_len, dst, &pout_len);
queued = in_len - pin_len;
if (queued)
memmove(ibuf, &ibuf[pin_len * channels], queued * channels * sizeof(float));
if (pout_len > 0) {
for (k = 0, i = 0; i < pout_len; i++) {
for (j = 0; j < channels; j++) {
obuf[k++] = out[MAX_SAMPLES * j + i];
}
}
pout_len = sf_writef_float(d->ofile, obuf, pout_len);
written += pout_len;
}
}
if (d->verbose)
fprintf(stdout, "read %zu samples, wrote %zu samples\n", read, written);
return 0;
}
int main(int argc, char *argv[])
{
int c;
int longopt_index = 0, ret;
struct data data;
spa_zero(data);
logger.log.level = SPA_LOG_LEVEL_DEBUG;
data.quality = -1;
while ((c = getopt_long(argc, argv, OPTIONS, long_options, &longopt_index)) != -1) {
switch (c) {
case 'h':
show_usage(argv[0], false);
return EXIT_SUCCESS;
case 'v':
data.verbose = true;
break;
case 'r':
ret = atoi(optarg);
if (ret <= 0) {
fprintf(stderr, "error: bad rate %s\n", optarg);
goto error_usage;
}
data.rate = ret;
break;
case 'f':
ret = sf_str_to_fmt(optarg);
if (ret < 0) {
fprintf(stderr, "error: bad format %s\n", optarg);
goto error_usage;
}
data.format = ret;
break;
case 'q':
ret = atoi(optarg);
if (ret < 0) {
fprintf(stderr, "error: bad quality %s\n", optarg);
goto error_usage;
}
data.quality = ret;
break;
case 'c':
data.cpu_flags = strtol(optarg, NULL, 0);
break;
default:
fprintf(stderr, "error: unknown option '%c'\n", c);
goto error_usage;
}
}
if (optind + 1 >= argc) {
fprintf(stderr, "error: filename arguments missing (%d %d)\n", optind, argc);
goto error_usage;
}
data.iname = argv[optind++];
data.oname = argv[optind++];
if (open_files(&data) < 0)
return EXIT_FAILURE;
do_conversion(&data);
close_files(&data);
return 0;
error_usage:
show_usage(argv[0], true);
return EXIT_FAILURE;
}