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-rw-r--r--src/output/plugins/RoarOutputPlugin.cxx423
1 files changed, 423 insertions, 0 deletions
diff --git a/src/output/plugins/RoarOutputPlugin.cxx b/src/output/plugins/RoarOutputPlugin.cxx
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+++ b/src/output/plugins/RoarOutputPlugin.cxx
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+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * Copyright (C) 2010-2011 Philipp 'ph3-der-loewe' Schafft
+ * Copyright (C) 2010-2011 Hans-Kristian 'maister' Arntzen
+ *
+ * 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 "RoarOutputPlugin.hxx"
+#include "../OutputAPI.hxx"
+#include "mixer/MixerList.hxx"
+#include "thread/Mutex.hxx"
+#include "util/Error.hxx"
+#include "util/Domain.hxx"
+#include "Log.hxx"
+
+#include <string>
+
+/* libroar/services.h declares roar_service_stream::new - work around
+ this C++ problem */
+#define new _new
+#include <roaraudio.h>
+#undef new
+
+class RoarOutput {
+ AudioOutput base;
+
+ std::string host, name;
+
+ roar_vs_t * vss;
+ int err;
+ int role;
+ struct roar_connection con;
+ struct roar_audio_info info;
+ mutable Mutex mutex;
+ volatile bool alive;
+
+public:
+ RoarOutput()
+ :base(roar_output_plugin),
+ err(ROAR_ERROR_NONE) {}
+
+ operator AudioOutput *() {
+ return &base;
+ }
+
+ bool Initialize(const config_param &param, Error &error) {
+ return base.Configure(param, error);
+ }
+
+ void Configure(const config_param &param);
+
+ bool Open(AudioFormat &audio_format, Error &error);
+ void Close();
+
+ void SendTag(const Tag &tag);
+ size_t Play(const void *chunk, size_t size, Error &error);
+ void Cancel();
+
+ int GetVolume() const;
+ bool SetVolume(unsigned volume);
+};
+
+static constexpr Domain roar_output_domain("roar_output");
+
+inline int
+RoarOutput::GetVolume() const
+{
+ const ScopeLock protect(mutex);
+
+ if (vss == nullptr || !alive)
+ return -1;
+
+ float l, r;
+ int error;
+ if (roar_vs_volume_get(vss, &l, &r, &error) < 0)
+ return -1;
+
+ return (l + r) * 50;
+}
+
+int
+roar_output_get_volume(RoarOutput &roar)
+{
+ return roar.GetVolume();
+}
+
+bool
+RoarOutput::SetVolume(unsigned volume)
+{
+ assert(volume <= 100);
+
+ const ScopeLock protect(mutex);
+ if (vss == nullptr || !alive)
+ return false;
+
+ int error;
+ float level = volume / 100.0;
+
+ roar_vs_volume_mono(vss, level, &error);
+ return true;
+}
+
+bool
+roar_output_set_volume(RoarOutput &roar, unsigned volume)
+{
+ return roar.SetVolume(volume);
+}
+
+inline void
+RoarOutput::Configure(const config_param &param)
+{
+ host = param.GetBlockValue("server", "");
+ name = param.GetBlockValue("name", "MPD");
+
+ const char *_role = param.GetBlockValue("role", "music");
+ role = _role != nullptr
+ ? roar_str2role(_role)
+ : ROAR_ROLE_MUSIC;
+}
+
+static AudioOutput *
+roar_init(const config_param &param, Error &error)
+{
+ RoarOutput *self = new RoarOutput();
+
+ if (!self->Initialize(param, error)) {
+ delete self;
+ return nullptr;
+ }
+
+ self->Configure(param);
+ return *self;
+}
+
+static void
+roar_finish(AudioOutput *ao)
+{
+ RoarOutput *self = (RoarOutput *)ao;
+
+ delete self;
+}
+
+static void
+roar_use_audio_format(struct roar_audio_info *info,
+ AudioFormat &audio_format)
+{
+ info->rate = audio_format.sample_rate;
+ info->channels = audio_format.channels;
+ info->codec = ROAR_CODEC_PCM_S;
+
+ switch (audio_format.format) {
+ case SampleFormat::UNDEFINED:
+ case SampleFormat::FLOAT:
+ case SampleFormat::DSD:
+ info->bits = 16;
+ audio_format.format = SampleFormat::S16;
+ break;
+
+ case SampleFormat::S8:
+ info->bits = 8;
+ break;
+
+ case SampleFormat::S16:
+ info->bits = 16;
+ break;
+
+ case SampleFormat::S24_P32:
+ info->bits = 32;
+ audio_format.format = SampleFormat::S32;
+ break;
+
+ case SampleFormat::S32:
+ info->bits = 32;
+ break;
+ }
+}
+
+inline bool
+RoarOutput::Open(AudioFormat &audio_format, Error &error)
+{
+ const ScopeLock protect(mutex);
+
+ if (roar_simple_connect(&con,
+ host.empty() ? nullptr : host.c_str(),
+ name.c_str()) < 0) {
+ error.Set(roar_output_domain,
+ "Failed to connect to Roar server");
+ return false;
+ }
+
+ vss = roar_vs_new_from_con(&con, &err);
+
+ if (vss == nullptr || err != ROAR_ERROR_NONE) {
+ error.Set(roar_output_domain, "Failed to connect to server");
+ return false;
+ }
+
+ roar_use_audio_format(&info, audio_format);
+
+ if (roar_vs_stream(vss, &info, ROAR_DIR_PLAY, &err) < 0) {
+ error.Set(roar_output_domain, "Failed to start stream");
+ return false;
+ }
+
+ roar_vs_role(vss, role, &err);
+ alive = true;
+ return true;
+}
+
+static bool
+roar_open(AudioOutput *ao, AudioFormat &audio_format, Error &error)
+{
+ RoarOutput *self = (RoarOutput *)ao;
+
+ return self->Open(audio_format, error);
+}
+
+inline void
+RoarOutput::Close()
+{
+ const ScopeLock protect(mutex);
+
+ alive = false;
+
+ if (vss != nullptr)
+ roar_vs_close(vss, ROAR_VS_TRUE, &err);
+ vss = nullptr;
+ roar_disconnect(&con);
+}
+
+static void
+roar_close(AudioOutput *ao)
+{
+ RoarOutput *self = (RoarOutput *)ao;
+ self->Close();
+}
+
+inline void
+RoarOutput::Cancel()
+{
+ const ScopeLock protect(mutex);
+
+ if (vss == nullptr)
+ return;
+
+ roar_vs_t *_vss = vss;
+ vss = nullptr;
+ roar_vs_close(_vss, ROAR_VS_TRUE, &err);
+ alive = false;
+
+ _vss = roar_vs_new_from_con(&con, &err);
+ if (_vss == nullptr)
+ return;
+
+ if (roar_vs_stream(_vss, &info, ROAR_DIR_PLAY, &err) < 0) {
+ roar_vs_close(_vss, ROAR_VS_TRUE, &err);
+ LogError(roar_output_domain, "Failed to start stream");
+ return;
+ }
+
+ roar_vs_role(_vss, role, &err);
+ vss = _vss;
+ alive = true;
+}
+
+static void
+roar_cancel(AudioOutput *ao)
+{
+ RoarOutput *self = (RoarOutput *)ao;
+
+ self->Cancel();
+}
+
+inline size_t
+RoarOutput::Play(const void *chunk, size_t size, Error &error)
+{
+ if (vss == nullptr) {
+ error.Set(roar_output_domain, "Connection is invalid");
+ return 0;
+ }
+
+ ssize_t nbytes = roar_vs_write(vss, chunk, size, &err);
+ if (nbytes <= 0) {
+ error.Set(roar_output_domain, "Failed to play data");
+ return 0;
+ }
+
+ return nbytes;
+}
+
+static size_t
+roar_play(AudioOutput *ao, const void *chunk, size_t size,
+ Error &error)
+{
+ RoarOutput *self = (RoarOutput *)ao;
+ return self->Play(chunk, size, error);
+}
+
+static const char*
+roar_tag_convert(TagType type, bool *is_uuid)
+{
+ *is_uuid = false;
+ switch (type)
+ {
+ case TAG_ARTIST:
+ case TAG_ALBUM_ARTIST:
+ return "AUTHOR";
+ case TAG_ALBUM:
+ return "ALBUM";
+ case TAG_TITLE:
+ return "TITLE";
+ case TAG_TRACK:
+ return "TRACK";
+ case TAG_NAME:
+ return "NAME";
+ case TAG_GENRE:
+ return "GENRE";
+ case TAG_DATE:
+ return "DATE";
+ case TAG_PERFORMER:
+ return "PERFORMER";
+ case TAG_COMMENT:
+ return "COMMENT";
+ case TAG_DISC:
+ return "DISCID";
+ case TAG_COMPOSER:
+#ifdef ROAR_META_TYPE_COMPOSER
+ return "COMPOSER";
+#else
+ return "AUTHOR";
+#endif
+ case TAG_MUSICBRAINZ_ARTISTID:
+ case TAG_MUSICBRAINZ_ALBUMID:
+ case TAG_MUSICBRAINZ_ALBUMARTISTID:
+ case TAG_MUSICBRAINZ_TRACKID:
+ *is_uuid = true;
+ return "HASH";
+
+ default:
+ return nullptr;
+ }
+}
+
+inline void
+RoarOutput::SendTag(const Tag &tag)
+{
+ if (vss == nullptr)
+ return;
+
+ const ScopeLock protect(mutex);
+
+ size_t cnt = 1;
+ struct roar_keyval vals[32];
+ char uuid_buf[32][64];
+
+ char timebuf[16];
+ snprintf(timebuf, sizeof(timebuf), "%02d:%02d:%02d",
+ tag.time / 3600, (tag.time % 3600) / 60, tag.time % 60);
+
+ vals[0].key = const_cast<char *>("LENGTH");
+ vals[0].value = timebuf;
+
+ for (unsigned i = 0; i < tag.num_items && cnt < 32; i++)
+ {
+ bool is_uuid = false;
+ const char *key = roar_tag_convert(tag.items[i]->type,
+ &is_uuid);
+ if (key != nullptr) {
+ vals[cnt].key = const_cast<char *>(key);
+
+ if (is_uuid) {
+ snprintf(uuid_buf[cnt], sizeof(uuid_buf[0]), "{UUID}%s",
+ tag.items[i]->value);
+ vals[cnt].value = uuid_buf[cnt];
+ } else {
+ vals[cnt].value = tag.items[i]->value;
+ }
+
+ cnt++;
+ }
+ }
+
+ roar_vs_meta(vss, vals, cnt, &(err));
+}
+
+static void
+roar_send_tag(AudioOutput *ao, const Tag *meta)
+{
+ RoarOutput *self = (RoarOutput *)ao;
+ self->SendTag(*meta);
+}
+
+const struct AudioOutputPlugin roar_output_plugin = {
+ "roar",
+ nullptr,
+ roar_init,
+ roar_finish,
+ nullptr,
+ nullptr,
+ roar_open,
+ roar_close,
+ nullptr,
+ roar_send_tag,
+ roar_play,
+ nullptr,
+ roar_cancel,
+ nullptr,
+ &roar_mixer_plugin,
+};