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lib/alsa/NonBlock: move the functions into a class managing the state

This commit is contained in:
Max Kellermann 2018-11-11 07:34:08 +01:00
parent a958abde2f
commit 12308a0f55
5 changed files with 29 additions and 29 deletions
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5
src/input/plugins/AlsaInputPlugin.cxx
View File

@ -34,7 +34,6 @@
#include "util/Domain.hxx"
#include "util/RuntimeError.hxx"
#include "util/StringCompare.hxx"
#include "util/ReusableArray.hxx"
#include "util/ASCII.hxx"
#include "Log.hxx"
#include "event/MultiSocketMonitor.hxx"
@ -69,7 +68,7 @@ class AlsaInputStream final
snd_pcm_t *const capture_handle;
const size_t frame_size;
ReusableArray<pollfd> pfd_buffer;
AlsaNonBlockPcm non_block;
DeferEvent defer_invalidate_sockets;
@ -180,7 +179,7 @@ AlsaInputStream::PrepareSockets() noexcept
return std::chrono::steady_clock::duration(-1);
}
return PrepareAlsaPcmSockets(*this, capture_handle, pfd_buffer);
return non_block.PrepareSockets(*this, capture_handle);
}
void

6
src/lib/alsa/NonBlock.cxx
View File

@ -23,8 +23,7 @@
#include "util/RuntimeError.hxx"
std::chrono::steady_clock::duration
PrepareAlsaPcmSockets(MultiSocketMonitor &m, snd_pcm_t *pcm,
ReusableArray<pollfd> &pfd_buffer)
AlsaNonBlockPcm::PrepareSockets(MultiSocketMonitor &m, snd_pcm_t *pcm)
{
int count = snd_pcm_poll_descriptors_count(pcm);
if (count <= 0) {
@ -51,8 +50,7 @@ PrepareAlsaPcmSockets(MultiSocketMonitor &m, snd_pcm_t *pcm,
}
std::chrono::steady_clock::duration
PrepareAlsaMixerSockets(MultiSocketMonitor &m, snd_mixer_t *mixer,
ReusableArray<pollfd> &pfd_buffer) noexcept
AlsaNonBlockMixer::PrepareSockets(MultiSocketMonitor &m, snd_mixer_t *mixer) noexcept
{
int count = snd_mixer_poll_descriptors_count(mixer);
if (count <= 0) {

35
src/lib/alsa/NonBlock.hxx
View File

@ -30,23 +30,30 @@
class MultiSocketMonitor;
/**
* Update #MultiSocketMonitor's socket list from
* snd_pcm_poll_descriptors(). To be called from
* MultiSocketMonitor::PrepareSockets().
*
* Throws exception on error.
* Helper class for #MultiSocketMonitor's virtual methods which
* manages the file descriptors for a #snd_pcm_t.
*/
std::chrono::steady_clock::duration
PrepareAlsaPcmSockets(MultiSocketMonitor &m, snd_pcm_t *pcm,
ReusableArray<pollfd> &pfd_buffer);
class AlsaNonBlockPcm {
ReusableArray<pollfd> pfd_buffer;
public:
/**
* Throws on error.
*/
std::chrono::steady_clock::duration PrepareSockets(MultiSocketMonitor &m,
snd_pcm_t *pcm);
};
/**
* Update #MultiSocketMonitor's socket list from
* snd_mixer_poll_descriptors(). To be called from
* MultiSocketMonitor::PrepareSockets().
* Helper class for #MultiSocketMonitor's virtual methods which
* manages the file descriptors for a #snd_mixer_t.
*/
std::chrono::steady_clock::duration
PrepareAlsaMixerSockets(MultiSocketMonitor &m, snd_mixer_t *mixer,
ReusableArray<pollfd> &pfd_buffer) noexcept;
class AlsaNonBlockMixer {
ReusableArray<pollfd> pfd_buffer;
public:
std::chrono::steady_clock::duration PrepareSockets(MultiSocketMonitor &m,
snd_mixer_t *mixer) noexcept;
};
#endif

5
src/mixer/plugins/AlsaMixerPlugin.cxx
View File

@ -26,7 +26,6 @@
#include "event/DeferEvent.hxx"
#include "event/Call.hxx"
#include "util/ASCII.hxx"
#include "util/ReusableArray.hxx"
#include "util/Domain.hxx"
#include "util/RuntimeError.hxx"
#include "Log.hxx"
@ -48,7 +47,7 @@ class AlsaMixerMonitor final : MultiSocketMonitor {
snd_mixer_t *mixer;
ReusableArray<pollfd> pfd_buffer;
AlsaNonBlockMixer non_block;
public:
AlsaMixerMonitor(EventLoop &_loop, snd_mixer_t *_mixer)
@ -110,7 +109,7 @@ AlsaMixerMonitor::PrepareSockets() noexcept
return std::chrono::steady_clock::duration(-1);
}
return PrepareAlsaMixerSockets(*this, mixer, pfd_buffer);
return non_block.PrepareSockets(*this, mixer);
}
void

7
src/output/plugins/AlsaOutputPlugin.cxx
View File

@ -148,10 +148,7 @@ class AlsaOutput final
*/
uint8_t *silence;
/**
* For PrepareAlsaPcmSockets().
*/
ReusableArray<pollfd> pfd_buffer;
AlsaNonBlockPcm non_block;
/**
* For copying data from OutputThread to IOThread.
@ -881,7 +878,7 @@ AlsaOutput::PrepareSockets() noexcept
}
try {
return PrepareAlsaPcmSockets(*this, pcm, pfd_buffer);
return non_block.PrepareSockets(*this, pcm);
} catch (...) {
ClearSocketList();
LockCaughtError();