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-rw-r--r--spa/plugins/audioconvert/spa-resample.c341
1 files changed, 341 insertions, 0 deletions
diff --git a/spa/plugins/audioconvert/spa-resample.c b/spa/plugins/audioconvert/spa-resample.c
new file mode 100644
index 0000000..4efb718
--- /dev/null
+++ b/spa/plugins/audioconvert/spa-resample.c
@@ -0,0 +1,341 @@
+/* Spa
+ *
+ * Copyright © 2020 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#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)
+{
+ 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;
+ d->oinfo.format |= SF_FORMAT_WAV;
+
+ 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;
+}
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