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				https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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	rename src to polyp
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f
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			@ -1,259 +0,0 @@
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/* $Id$ */
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/***
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  This file is part of polypaudio.
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  polypaudio is free software; you can redistribute it and/or modify
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  it under the terms of the GNU 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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  polypaudio 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 General Public License
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  along with polypaudio; 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 <string.h>
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#include <assert.h>
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#include <stdlib.h>
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#include "polyplib-simple.h"
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#include "polyplib.h"
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#include "mainloop.h"
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#include "native-common.h"
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/*#include "polyp-error.h"*/
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struct pa_simple {
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    struct pa_mainloop *mainloop;
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    struct pa_context *context;
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    struct pa_stream *stream;
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    enum pa_stream_direction direction;
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    int dead, drained;
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    void *read_data;
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    size_t read_index, read_length;
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};
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static void read_callback(struct pa_stream *s, const void*data, size_t length, void *userdata);
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static int check_error(struct pa_simple *p, int *perror) {
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    assert(p);
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    if (pa_context_is_dead(p->context) || (p->stream && pa_stream_is_dead(p->stream))) {
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        if (perror)
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            *perror = pa_context_errno(p->context);
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        return -1;
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    }
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    return 0;
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}
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static int iterate(struct pa_simple *p, int block, int *perror) {
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    assert(p && p->context && p->mainloop);
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    if (check_error(p, perror) < 0)
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        return -1;
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    if (!block && !pa_context_is_pending(p->context))
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        return 0;
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    do {
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        if (pa_mainloop_iterate(p->mainloop, 1, NULL) < 0) {
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            if (perror)
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                *perror = PA_ERROR_INTERNAL;
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            return -1;
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        }
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        if (check_error(p, perror) < 0)
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            return -1;
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    } while (pa_context_is_pending(p->context));
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    return 0;
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}
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struct pa_simple* pa_simple_new(
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    const char *server,
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    const char *name,
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    enum pa_stream_direction dir,
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    const char *dev,
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    const char *stream_name,
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    const struct pa_sample_spec *ss,
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    const struct pa_buffer_attr *attr,
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    int *perror) {
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    struct pa_simple *p;
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    int error = PA_ERROR_INTERNAL;
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    assert(ss);
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    p = malloc(sizeof(struct pa_simple));
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    assert(p);
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    p->context = NULL;
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    p->stream = NULL;
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    p->mainloop = pa_mainloop_new();
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    assert(p->mainloop);
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    p->dead = 0;
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    p->direction = dir;
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    p->read_data = NULL;
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    p->read_index = p->read_length = 0;
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    if (!(p->context = pa_context_new(pa_mainloop_get_api(p->mainloop), name)))
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        goto fail;
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    if (pa_context_connect(p->context, server, NULL, NULL) < 0) {
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        error = pa_context_errno(p->context);
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        goto fail;
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    }
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    /* Wait until the context is ready */
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    while (!pa_context_is_ready(p->context)) {
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        if (iterate(p, 1, &error) < 0)
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            goto fail;
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    }
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    if (!(p->stream = pa_stream_new(p->context, dir, dev, stream_name, ss, attr, NULL, NULL)))
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        goto fail;
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    /* Wait until the stream is ready */
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    while (!pa_stream_is_ready(p->stream)) {
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        if (iterate(p, 1, &error) < 0)
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            goto fail;
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    }
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    pa_stream_set_read_callback(p->stream, read_callback, p);
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    return p;
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fail:
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    if (perror)
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        *perror = error;
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    pa_simple_free(p);
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    return NULL;
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}
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void pa_simple_free(struct pa_simple *s) {
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    assert(s);
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    free(s->read_data);
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    if (s->stream)
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        pa_stream_free(s->stream);
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    if (s->context)
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        pa_context_free(s->context);
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    if (s->mainloop)
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        pa_mainloop_free(s->mainloop);
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    free(s);
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}
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int pa_simple_write(struct pa_simple *p, const void*data, size_t length, int *perror) {
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    assert(p && data && p->direction == PA_STREAM_PLAYBACK);
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    while (length > 0) {
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        size_t l;
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        while (!(l = pa_stream_writable_size(p->stream)))
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            if (iterate(p, 1, perror) < 0)
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                return -1;
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        if (l > length)
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            l = length;
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        pa_stream_write(p->stream, data, l);
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        data += l;
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        length -= l;
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    }
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    /* Make sure that no data is pending for write */
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    if (iterate(p, 0, perror) < 0)
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        return -1;
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    return 0;
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}
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static void read_callback(struct pa_stream *s, const void*data, size_t length, void *userdata) {
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    struct pa_simple *p = userdata;
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    assert(s && data && length && p);
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    if (p->read_data) {
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        fprintf(stderr, __FILE__": Buffer overflow, dropping incoming memory blocks.\n");
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        free(p->read_data);
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    }
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    p->read_data = malloc(p->read_length = length);
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    assert(p->read_data);
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    memcpy(p->read_data, data, length);
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    p->read_index = 0;
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}
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int pa_simple_read(struct pa_simple *p, void*data, size_t length, int *perror) {
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    assert(p && data && p->direction == PA_STREAM_RECORD);
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    while (length > 0) {
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        if (p->read_data) {
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            size_t l = length;
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            if (p->read_length <= l)
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                l = p->read_length;
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            memcpy(data, p->read_data+p->read_index, l);
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            data += l;
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            length -= l;
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            p->read_index += l;
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            p->read_length -= l;
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            if (!p->read_length) {
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                free(p->read_data);
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                p->read_data = NULL;
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                p->read_index = 0;
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            }
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            if (!length)
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                return 0;
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            assert(!p->read_data);
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        }
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        if (iterate(p, 1, perror) < 0)
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            return -1;
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    }
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    return 0;
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}
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static void drain_complete(struct pa_stream *s, void *userdata) {
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    struct pa_simple *p = userdata;
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    assert(s && p);
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    p->drained = 1;
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}
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int pa_simple_drain(struct pa_simple *p, int *perror) {
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    assert(p && p->direction == PA_STREAM_PLAYBACK);
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    p->drained = 0;
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    pa_stream_drain(p->stream, drain_complete, p);
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    while (!p->drained) {
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        if (iterate(p, 1, perror) < 0) {
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            pa_stream_drain(p->stream, NULL, NULL);
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            return -1;
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        }
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    }
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    return 0;
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}
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