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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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d035f4a3f3
The primary reason for this change is to allow time graphs that do not go through the origin and hence smoothing starting from the origin is not desired. This change will allow passing time data into the smoother while paused and then abruptly use that data without smoothing using the 'quick fixup' flag when resuming. Primary use case is allowing recording time graphs where the data recorded originates from a time before the stream was created. The resulting graft will be shifted and should not be smoothened to go through the origin.
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/***
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This file is part of PulseAudio.
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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 2.1 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 <stdlib.h>
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#include <pulsecore/time-smoother.h>
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#include <pulse/timeval.h>
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int main(int argc, char*argv[]) {
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pa_usec_t x;
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unsigned u = 0;
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pa_smoother *s;
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int m;
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/* unsigned msec[] = { */
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/* 200, 200, */
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/* 300, 320, */
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/* 400, 400, */
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/* 500, 480, */
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/* 0, 0 */
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/* }; */
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int msec[200];
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srand(0);
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pa_log_set_level(PA_LOG_DEBUG);
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for (m = 0, u = 0; u < PA_ELEMENTSOF(msec); u+= 2) {
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msec[u] = m+1 + (rand() % 100) - 50;
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msec[u+1] = m + (rand() % 2000) - 1000 + 5000;
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m += rand() % 100;
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if (msec[u] < 0)
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msec[u] = 0;
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if (msec[u+1] < 0)
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msec[u+1] = 0;
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}
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s = pa_smoother_new(700*PA_USEC_PER_MSEC, 2000*PA_USEC_PER_MSEC, FALSE, TRUE, 6, 0, TRUE);
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for (x = 0, u = 0; x < PA_USEC_PER_SEC * 10; x += PA_USEC_PER_MSEC) {
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while (u < PA_ELEMENTSOF(msec) && (pa_usec_t) msec[u]*PA_USEC_PER_MSEC < x) {
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pa_smoother_put(s, (pa_usec_t) msec[u] * PA_USEC_PER_MSEC, (pa_usec_t) msec[u+1] * PA_USEC_PER_MSEC);
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printf("%i\t\t%i\n", msec[u], msec[u+1]);
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u += 2;
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pa_smoother_resume(s, (pa_usec_t) msec[u] * PA_USEC_PER_MSEC, TRUE);
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}
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printf("%llu\t%llu\n", (unsigned long long) (x/PA_USEC_PER_MSEC), (unsigned long long) (pa_smoother_get(s, x)/PA_USEC_PER_MSEC));
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}
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pa_smoother_free(s);
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return 0;
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}
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