1 files changed, 423 insertions, 0 deletions
diff --git a/src/output/plugins/RoarOutputPlugin.cxx b/src/output/plugins/RoarOutputPlugin.cxx
new file mode 100644
index 000000000..ac4dd8a4e
--- /dev/null
+++ b/src/output/plugins/RoarOutputPlugin.cxx
@@ -0,0 +1,423 @@
+/*
+ * 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,
+};