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-rw-r--r--src/mixer/AlsaMixerPlugin.cxx404
1 files changed, 0 insertions, 404 deletions
diff --git a/src/mixer/AlsaMixerPlugin.cxx b/src/mixer/AlsaMixerPlugin.cxx
deleted file mode 100644
index 4a4ca433c..000000000
--- a/src/mixer/AlsaMixerPlugin.cxx
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * Copyright (C) 2003-2013 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 "MixerInternal.hxx"
-#include "OutputAPI.hxx"
-#include "GlobalEvents.hxx"
-#include "Main.hxx"
-#include "event/MultiSocketMonitor.hxx"
-#include "event/Loop.hxx"
-#include "event/Call.hxx"
-#include "util/ASCII.hxx"
-#include "util/ReusableArray.hxx"
-#include "util/Error.hxx"
-#include "util/Domain.hxx"
-#include "Log.hxx"
-
-#include <algorithm>
-
-#include <alsa/asoundlib.h>
-
-#define VOLUME_MIXER_ALSA_DEFAULT "default"
-#define VOLUME_MIXER_ALSA_CONTROL_DEFAULT "PCM"
-static constexpr unsigned VOLUME_MIXER_ALSA_INDEX_DEFAULT = 0;
-
-class AlsaMixerMonitor final : private MultiSocketMonitor {
- snd_mixer_t *mixer;
-
- ReusableArray<pollfd> pfd_buffer;
-
-public:
- AlsaMixerMonitor(EventLoop &_loop, snd_mixer_t *_mixer)
- :MultiSocketMonitor(_loop), mixer(_mixer) {
-#ifdef USE_EPOLL
- _loop.AddCall([this](){ InvalidateSockets(); });
-#else
- _loop.AddIdle(InitAlsaMixerMonitor, this);
-#endif
- }
-
-private:
-#ifndef USE_EPOLL
- static gboolean InitAlsaMixerMonitor(gpointer data) {
- AlsaMixerMonitor &amm = *(AlsaMixerMonitor *)data;
- amm.InvalidateSockets();
- return false;
- }
-#endif
-
- virtual int PrepareSockets() override;
- virtual void DispatchSockets() override;
-};
-
-class AlsaMixer final : public Mixer {
- const char *device;
- const char *control;
- unsigned int index;
-
- snd_mixer_t *handle;
- snd_mixer_elem_t *elem;
- long volume_min;
- long volume_max;
- int volume_set;
-
- AlsaMixerMonitor *monitor;
-
-public:
- AlsaMixer():Mixer(alsa_mixer_plugin) {}
-
- void Configure(const config_param &param);
- bool Setup(Error &error);
- bool Open(Error &error);
- void Close();
-
- int GetVolume(Error &error);
- bool SetVolume(unsigned volume, Error &error);
-};
-
-static constexpr Domain alsa_mixer_domain("alsa_mixer");
-
-int
-AlsaMixerMonitor::PrepareSockets()
-{
- if (mixer == nullptr)
- return -1;
-
- int count = snd_mixer_poll_descriptors_count(mixer);
- if (count < 0)
- count = 0;
-
- struct pollfd *pfds = pfd_buffer.Get(count);
-
- count = snd_mixer_poll_descriptors(mixer, pfds, count);
- if (count < 0)
- count = 0;
-
- struct pollfd *end = pfds + count;
-
- UpdateSocketList([pfds, end](int fd) -> unsigned {
- auto i = std::find_if(pfds, end, [fd](const struct pollfd &pfd){
- return pfd.fd == fd;
- });
- if (i == end)
- return 0;
-
- auto events = i->events;
- i->events = 0;
- return events;
- });
-
- for (auto i = pfds; i != end; ++i)
- if (i->events != 0)
- AddSocket(i->fd, i->events);
-
- return -1;
-}
-
-void
-AlsaMixerMonitor::DispatchSockets()
-{
- assert(mixer != nullptr);
-
- int err = snd_mixer_handle_events(mixer);
- if (err < 0) {
- FormatError(alsa_mixer_domain,
- "snd_mixer_handle_events() failed: %s",
- snd_strerror(err));
-
- if (err == -ENODEV) {
- /* the sound device was unplugged; disable
- this GSource */
- mixer = nullptr;
- InvalidateSockets();
- return;
- }
- }
-}
-
-/*
- * libasound callbacks
- *
- */
-
-static int
-alsa_mixer_elem_callback(gcc_unused snd_mixer_elem_t *elem, unsigned mask)
-{
- if (mask & SND_CTL_EVENT_MASK_VALUE)
- GlobalEvents::Emit(GlobalEvents::MIXER);
-
- return 0;
-}
-
-/*
- * mixer_plugin methods
- *
- */
-
-inline void
-AlsaMixer::Configure(const config_param &param)
-{
- device = param.GetBlockValue("mixer_device",
- VOLUME_MIXER_ALSA_DEFAULT);
- control = param.GetBlockValue("mixer_control",
- VOLUME_MIXER_ALSA_CONTROL_DEFAULT);
- index = param.GetBlockValue("mixer_index",
- VOLUME_MIXER_ALSA_INDEX_DEFAULT);
-}
-
-static Mixer *
-alsa_mixer_init(gcc_unused void *ao, const config_param &param,
- gcc_unused Error &error)
-{
- AlsaMixer *am = new AlsaMixer();
- am->Configure(param);
-
- return am;
-}
-
-static void
-alsa_mixer_finish(Mixer *data)
-{
- AlsaMixer *am = (AlsaMixer *)data;
-
- delete am;
-
- /* free libasound's config cache */
- snd_config_update_free_global();
-}
-
-gcc_pure
-static snd_mixer_elem_t *
-alsa_mixer_lookup_elem(snd_mixer_t *handle, const char *name, unsigned idx)
-{
- for (snd_mixer_elem_t *elem = snd_mixer_first_elem(handle);
- elem != nullptr; elem = snd_mixer_elem_next(elem)) {
- if (snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE &&
- StringEqualsCaseASCII(snd_mixer_selem_get_name(elem),
- name) &&
- snd_mixer_selem_get_index(elem) == idx)
- return elem;
- }
-
- return nullptr;
-}
-
-inline bool
-AlsaMixer::Setup(Error &error)
-{
- int err;
-
- if ((err = snd_mixer_attach(handle, device)) < 0) {
- error.Format(alsa_mixer_domain, err,
- "failed to attach to %s: %s",
- device, snd_strerror(err));
- return false;
- }
-
- if ((err = snd_mixer_selem_register(handle, nullptr,
- nullptr)) < 0) {
- error.Format(alsa_mixer_domain, err,
- "snd_mixer_selem_register() failed: %s",
- snd_strerror(err));
- return false;
- }
-
- if ((err = snd_mixer_load(handle)) < 0) {
- error.Format(alsa_mixer_domain, err,
- "snd_mixer_load() failed: %s\n",
- snd_strerror(err));
- return false;
- }
-
- elem = alsa_mixer_lookup_elem(handle, control, index);
- if (elem == nullptr) {
- error.Format(alsa_mixer_domain, 0,
- "no such mixer control: %s", control);
- return false;
- }
-
- snd_mixer_selem_get_playback_volume_range(elem, &volume_min,
- &volume_max);
-
- snd_mixer_elem_set_callback(elem, alsa_mixer_elem_callback);
-
- monitor = new AlsaMixerMonitor(*main_loop, handle);
-
- return true;
-}
-
-inline bool
-AlsaMixer::Open(Error &error)
-{
- int err;
-
- volume_set = -1;
-
- err = snd_mixer_open(&handle, 0);
- if (err < 0) {
- error.Format(alsa_mixer_domain, err,
- "snd_mixer_open() failed: %s", snd_strerror(err));
- return false;
- }
-
- if (!Setup(error)) {
- snd_mixer_close(handle);
- return false;
- }
-
- return true;
-}
-
-static bool
-alsa_mixer_open(Mixer *data, Error &error)
-{
- AlsaMixer *am = (AlsaMixer *)data;
-
- return am->Open(error);
-}
-
-inline void
-AlsaMixer::Close()
-{
- assert(handle != nullptr);
-
- delete monitor;
-
- snd_mixer_elem_set_callback(elem, nullptr);
- snd_mixer_close(handle);
-}
-
-static void
-alsa_mixer_close(Mixer *data)
-{
- AlsaMixer *am = (AlsaMixer *)data;
- am->Close();
-}
-
-inline int
-AlsaMixer::GetVolume(Error &error)
-{
- int err;
- int ret;
- long level;
-
- assert(handle != nullptr);
-
- err = snd_mixer_handle_events(handle);
- if (err < 0) {
- error.Format(alsa_mixer_domain, err,
- "snd_mixer_handle_events() failed: %s",
- snd_strerror(err));
- return false;
- }
-
- err = snd_mixer_selem_get_playback_volume(elem,
- SND_MIXER_SCHN_FRONT_LEFT,
- &level);
- if (err < 0) {
- error.Format(alsa_mixer_domain, err,
- "failed to read ALSA volume: %s",
- snd_strerror(err));
- return false;
- }
-
- ret = ((volume_set / 100.0) * (volume_max - volume_min)
- + volume_min) + 0.5;
- if (volume_set > 0 && ret == level) {
- ret = volume_set;
- } else {
- ret = (int)(100 * (((float)(level - volume_min)) /
- (volume_max - volume_min)) + 0.5);
- }
-
- return ret;
-}
-
-static int
-alsa_mixer_get_volume(Mixer *mixer, Error &error)
-{
- AlsaMixer *am = (AlsaMixer *)mixer;
- return am->GetVolume(error);
-}
-
-inline bool
-AlsaMixer::SetVolume(unsigned volume, Error &error)
-{
- float vol;
- long level;
- int err;
-
- assert(handle != nullptr);
-
- vol = volume;
-
- volume_set = vol + 0.5;
-
- level = (long)(((vol / 100.0) * (volume_max - volume_min) +
- volume_min) + 0.5);
- level = level > volume_max ? volume_max : level;
- level = level < volume_min ? volume_min : level;
-
- err = snd_mixer_selem_set_playback_volume_all(elem, level);
- if (err < 0) {
- error.Format(alsa_mixer_domain, err,
- "failed to set ALSA volume: %s",
- snd_strerror(err));
- return false;
- }
-
- return true;
-}
-
-static bool
-alsa_mixer_set_volume(Mixer *mixer, unsigned volume, Error &error)
-{
- AlsaMixer *am = (AlsaMixer *)mixer;
- return am->SetVolume(volume, error);
-}
-
-const struct mixer_plugin alsa_mixer_plugin = {
- alsa_mixer_init,
- alsa_mixer_finish,
- alsa_mixer_open,
- alsa_mixer_close,
- alsa_mixer_get_volume,
- alsa_mixer_set_volume,
- true,
-};
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