mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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235 lines
7.2 KiB
C
235 lines
7.2 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2004-2006 Lennart Poettering
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Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <math.h>
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#include <string.h>
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#include <pulse/timeval.h>
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#include <pulse/i18n.h>
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#include <pulsecore/core-util.h>
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#include <pulsecore/macro.h>
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#include "sample.h"
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size_t pa_sample_size(const pa_sample_spec *spec) {
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static const size_t table[] = {
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[PA_SAMPLE_U8] = 1,
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[PA_SAMPLE_ULAW] = 1,
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[PA_SAMPLE_ALAW] = 1,
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[PA_SAMPLE_S16LE] = 2,
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[PA_SAMPLE_S16BE] = 2,
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[PA_SAMPLE_FLOAT32LE] = 4,
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[PA_SAMPLE_FLOAT32BE] = 4,
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[PA_SAMPLE_S32LE] = 4,
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[PA_SAMPLE_S32BE] = 4,
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[PA_SAMPLE_S24LE] = 3,
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[PA_SAMPLE_S24BE] = 3,
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[PA_SAMPLE_S24_32LE] = 4,
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[PA_SAMPLE_S24_32BE] = 4
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};
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pa_assert(spec);
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pa_return_val_if_fail(pa_sample_spec_valid(spec), 0);
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return table[spec->format];
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}
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size_t pa_frame_size(const pa_sample_spec *spec) {
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pa_assert(spec);
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pa_return_val_if_fail(pa_sample_spec_valid(spec), 0);
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return pa_sample_size(spec) * spec->channels;
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}
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size_t pa_bytes_per_second(const pa_sample_spec *spec) {
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pa_assert(spec);
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pa_return_val_if_fail(pa_sample_spec_valid(spec), 0);
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return spec->rate*pa_frame_size(spec);
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}
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pa_usec_t pa_bytes_to_usec(uint64_t length, const pa_sample_spec *spec) {
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pa_assert(spec);
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pa_return_val_if_fail(pa_sample_spec_valid(spec), 0);
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return (((pa_usec_t) (length / pa_frame_size(spec)) * PA_USEC_PER_SEC) / spec->rate);
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}
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size_t pa_usec_to_bytes(pa_usec_t t, const pa_sample_spec *spec) {
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pa_assert(spec);
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pa_return_val_if_fail(pa_sample_spec_valid(spec), 0);
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return (size_t) (((t * spec->rate) / PA_USEC_PER_SEC)) * pa_frame_size(spec);
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}
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pa_sample_spec* pa_sample_spec_init(pa_sample_spec *spec) {
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pa_assert(spec);
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spec->format = PA_SAMPLE_INVALID;
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spec->rate = 0;
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spec->channels = 0;
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return spec;
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}
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int pa_sample_spec_valid(const pa_sample_spec *spec) {
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pa_assert(spec);
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if (spec->rate <= 0 ||
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spec->rate > PA_RATE_MAX ||
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spec->channels <= 0 ||
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spec->channels > PA_CHANNELS_MAX ||
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spec->format >= PA_SAMPLE_MAX ||
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spec->format < 0)
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return 0;
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return 1;
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}
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int pa_sample_spec_equal(const pa_sample_spec*a, const pa_sample_spec*b) {
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pa_assert(a);
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pa_assert(b);
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pa_return_val_if_fail(pa_sample_spec_valid(a), 0);
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pa_return_val_if_fail(pa_sample_spec_valid(b), 0);
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return
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(a->format == b->format) &&
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(a->rate == b->rate) &&
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(a->channels == b->channels);
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}
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const char *pa_sample_format_to_string(pa_sample_format_t f) {
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static const char* const table[]= {
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[PA_SAMPLE_U8] = "u8",
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[PA_SAMPLE_ALAW] = "aLaw",
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[PA_SAMPLE_ULAW] = "uLaw",
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[PA_SAMPLE_S16LE] = "s16le",
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[PA_SAMPLE_S16BE] = "s16be",
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[PA_SAMPLE_FLOAT32LE] = "float32le",
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[PA_SAMPLE_FLOAT32BE] = "float32be",
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[PA_SAMPLE_S32LE] = "s32le",
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[PA_SAMPLE_S32BE] = "s32be",
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[PA_SAMPLE_S24LE] = "s24le",
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[PA_SAMPLE_S24BE] = "s24be",
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[PA_SAMPLE_S24_32LE] = "s24-32le",
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[PA_SAMPLE_S24_32BE] = "s24-32be",
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};
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if (f < 0 || f >= PA_SAMPLE_MAX)
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return NULL;
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return table[f];
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}
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char *pa_sample_spec_snprint(char *s, size_t l, const pa_sample_spec *spec) {
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pa_assert(s);
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pa_assert(l > 0);
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pa_assert(spec);
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pa_init_i18n();
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if (!pa_sample_spec_valid(spec))
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pa_snprintf(s, l, _("(invalid)"));
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else
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pa_snprintf(s, l, _("%s %uch %uHz"), pa_sample_format_to_string(spec->format), spec->channels, spec->rate);
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return s;
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}
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char* pa_bytes_snprint(char *s, size_t l, unsigned v) {
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pa_assert(s);
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pa_assert(l > 0);
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pa_init_i18n();
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if (v >= ((unsigned) 1024)*1024*1024)
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pa_snprintf(s, l, _("%0.1f GiB"), ((double) v)/1024/1024/1024);
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else if (v >= ((unsigned) 1024)*1024)
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pa_snprintf(s, l, _("%0.1f MiB"), ((double) v)/1024/1024);
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else if (v >= (unsigned) 1024)
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pa_snprintf(s, l, _("%0.1f KiB"), ((double) v)/1024);
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else
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pa_snprintf(s, l, _("%u B"), (unsigned) v);
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return s;
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}
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pa_sample_format_t pa_parse_sample_format(const char *format) {
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pa_assert(format);
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if (strcasecmp(format, "s16le") == 0)
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return PA_SAMPLE_S16LE;
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else if (strcasecmp(format, "s16be") == 0)
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return PA_SAMPLE_S16BE;
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else if (strcasecmp(format, "s16ne") == 0 || strcasecmp(format, "s16") == 0 || strcasecmp(format, "16") == 0)
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return PA_SAMPLE_S16NE;
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else if (strcasecmp(format, "s16re") == 0)
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return PA_SAMPLE_S16RE;
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else if (strcasecmp(format, "u8") == 0 || strcasecmp(format, "8") == 0)
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return PA_SAMPLE_U8;
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else if (strcasecmp(format, "float32") == 0 || strcasecmp(format, "float32ne") == 0 || strcasecmp(format, "float") == 0)
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return PA_SAMPLE_FLOAT32NE;
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else if (strcasecmp(format, "float32re") == 0)
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return PA_SAMPLE_FLOAT32RE;
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else if (strcasecmp(format, "float32le") == 0)
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return PA_SAMPLE_FLOAT32LE;
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else if (strcasecmp(format, "float32be") == 0)
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return PA_SAMPLE_FLOAT32BE;
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else if (strcasecmp(format, "ulaw") == 0 || strcasecmp(format, "mulaw") == 0)
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return PA_SAMPLE_ULAW;
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else if (strcasecmp(format, "alaw") == 0)
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return PA_SAMPLE_ALAW;
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else if (strcasecmp(format, "s32le") == 0)
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return PA_SAMPLE_S32LE;
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else if (strcasecmp(format, "s32be") == 0)
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return PA_SAMPLE_S32BE;
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else if (strcasecmp(format, "s32ne") == 0 || strcasecmp(format, "s32") == 0 || strcasecmp(format, "32") == 0)
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return PA_SAMPLE_S32NE;
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else if (strcasecmp(format, "s32re") == 0)
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return PA_SAMPLE_S24RE;
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else if (strcasecmp(format, "s24le") == 0)
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return PA_SAMPLE_S24LE;
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else if (strcasecmp(format, "s24be") == 0)
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return PA_SAMPLE_S24BE;
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else if (strcasecmp(format, "s24ne") == 0 || strcasecmp(format, "s24") == 0 || strcasecmp(format, "24") == 0)
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return PA_SAMPLE_S24NE;
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else if (strcasecmp(format, "s24re") == 0)
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return PA_SAMPLE_S24RE;
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else if (strcasecmp(format, "s24-32le") == 0)
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return PA_SAMPLE_S24LE;
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else if (strcasecmp(format, "s24-32be") == 0)
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return PA_SAMPLE_S24BE;
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else if (strcasecmp(format, "s24-32ne") == 0 || strcasecmp(format, "s24-32") == 0)
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return PA_SAMPLE_S24NE;
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else if (strcasecmp(format, "s24-32re") == 0)
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return PA_SAMPLE_S24RE;
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return -1;
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}
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