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/*
* Copyright 2003-2018 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "NonBlock.hxx"
#include "event/MultiSocketMonitor.hxx"
#include "util/RuntimeError.hxx"
std::chrono::steady_clock::duration
PrepareAlsaPcmSockets(MultiSocketMonitor &m, snd_pcm_t *pcm,
ReusableArray<pollfd> &pfd_buffer)
{
int count = snd_pcm_poll_descriptors_count(pcm);
if (count <= 0) {
if (count == 0)
throw std::runtime_error("snd_pcm_poll_descriptors_count() failed");
else
throw FormatRuntimeError("snd_pcm_poll_descriptors_count() failed: %s",
snd_strerror(-count));
}
struct pollfd *pfds = pfd_buffer.Get(count);
count = snd_pcm_poll_descriptors(pcm, pfds, count);
if (count <= 0) {
if (count == 0)
throw std::runtime_error("snd_pcm_poll_descriptors() failed");
else
throw FormatRuntimeError("snd_pcm_poll_descriptors() failed: %s",
snd_strerror(-count));
}
m.ReplaceSocketList(pfds, count);
return std::chrono::steady_clock::duration(-1);
}
std::chrono::steady_clock::duration
PrepareAlsaMixerSockets(MultiSocketMonitor &m, snd_mixer_t *mixer,
ReusableArray<pollfd> &pfd_buffer) noexcept
{
int count = snd_mixer_poll_descriptors_count(mixer);
if (count <= 0) {
m.ClearSocketList();
return std::chrono::steady_clock::duration(-1);
}
struct pollfd *pfds = pfd_buffer.Get(count);
count = snd_mixer_poll_descriptors(mixer, pfds, count);
if (count < 0)
count = 0;
m.ReplaceSocketList(pfds, count);
return std::chrono::steady_clock::duration(-1);
}
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