Add Oboe player for Android

client/Makefile

@@ -58,9 +58,9 @@ endif
 ifeq ($(TARGET), ANDROID)
 
 CXX       = $(PROGRAM_PREFIX)clang++
-CXXFLAGS += -pthread -fPIC -DHAS_TREMOR -DHAS_OPENSL -I$(NDK_DIR)/include
-LDFLAGS   = -L$(NDK_DIR)/lib -pie -lvorbisidec -logg -lopus -lFLAC -lOpenSLES -latomic -llog -static-libstdc++
-OBJ      += player/opensl_player.o 
+CXXFLAGS += -pthread -fPIC -DHAS_TREMOR -DHAS_OBOE -I$(NDK_DIR)/include -I/home/johannes/Develop/oboe/include
+LDFLAGS   = -L$(NDK_DIR)/lib -pie -lvorbisidec -logg -lopus -lFLAC -lOpenSLES -loboe -latomic -llog -static-libstdc++
+OBJ      += player/oboe_player.o 
 
 else ifeq ($(TARGET), OPENWRT)
 

client/controller.cpp

@@ -130,6 +130,8 @@ void Controller::onMessageReceived(ClientConnection* /*connection*/, const msg::
         player_ = make_unique<AlsaPlayer>(pcmDevice_, stream_);
 #elif HAS_OPENSL
         player_ = make_unique<OpenslPlayer>(pcmDevice_, stream_);
+#elif HAS_OBOE
+        player_ = make_unique<OboePlayer>(pcmDevice_, stream_);
 #elif HAS_COREAUDIO
         player_ = make_unique<CoreAudioPlayer>(pcmDevice_, stream_);
 #else

client/controller.hpp

@@ -30,6 +30,8 @@
 #include "player/alsa_player.hpp"
 #elif HAS_OPENSL
 #include "player/opensl_player.hpp"
+#elif HAS_OBOE
+#include "player/oboe_player.hpp"
 #elif HAS_COREAUDIO
 #include "player/coreaudio_player.hpp"
 #endif

client/player/oboe_player.cpp

@@ -0,0 +1,87 @@
+/***
+    This file is part of snapcast
+    Copyright (C) 2014-2020  Johannes Pohl
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <assert.h>
+#include <iostream>
+
+#include "common/aixlog.hpp"
+#include "common/snap_exception.hpp"
+#include "common/str_compat.hpp"
+#include "oboe_player.hpp"
+
+using namespace std;
+
+
+OboePlayer::OboePlayer(const PcmDevice& pcmDevice, std::shared_ptr<Stream> stream) : Player(pcmDevice, stream), ms_(50), buff_size(0), pubStream_(stream)
+{
+
+    oboe::AudioStreamBuilder builder;
+    // The builder set methods can be chained for convenience.
+    builder.setSharingMode(oboe::SharingMode::Exclusive)
+        ->setPerformanceMode(oboe::PerformanceMode::LowLatency)
+        ->setChannelCount(stream->getFormat().channels)
+        ->setSampleRate(stream->getFormat().rate)
+        ->setFormat(oboe::AudioFormat::I16)
+        ->setCallback(this)
+        ->openManagedStream(out_stream_);
+}
+
+
+OboePlayer::~OboePlayer()
+{
+}
+
+
+oboe::DataCallbackResult OboePlayer::onAudioReady(oboe::AudioStream* oboeStream, void* audioData, int32_t numFrames)
+{
+    
+    int32_t buffer_fill_size = oboeStream->getBufferCapacityInFrames() - numFrames;
+    double delay_ms = static_cast<double>(buffer_fill_size) / stream_->getFormat().msRate();
+    chronos::usec delay(static_cast<int>(delay_ms * 1000.));
+    //LOG(INFO) << "onAudioReady frames: " << numFrames << ", capacity: " << oboeStream->getBufferCapacityInFrames() << ", size: " << oboeStream->getBufferSizeInFrames() << ", delay ms: " << delay_ms << "\n";
+
+    if (!stream_->getPlayerChunk(audioData, delay, numFrames))
+    {
+        //		LOG(INFO) << "Failed to get chunk. Playing silence.\n";
+        memset(audioData, 0, numFrames);
+    }
+    else
+    {
+        adjustVolume(static_cast<char*>(audioData), numFrames);
+    }
+
+    return oboe::DataCallbackResult::Continue;
+}
+
+
+void OboePlayer::start()
+{
+    // Typically, start the stream after querying some stream information, as well as some input from the user
+    out_stream_->requestStart();
+}
+
+
+void OboePlayer::stop()
+{
+    out_stream_->requestStop();
+}
+
+
+void OboePlayer::worker()
+{
+}

client/player/oboe_player.hpp

@@ -0,0 +1,56 @@
+/***
+    This file is part of snapcast
+    Copyright (C) 2014-2020  Johannes Pohl
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifndef OBOE_PLAYER_HPP
+#define OBOE_PLAYER_HPP
+
+#include <oboe/Oboe.h>
+
+#include "player.hpp"
+
+typedef int (*AndroidAudioCallback)(short* buffer, int num_samples);
+
+
+/// OpenSL Audio Player
+/**
+ * Player implementation for Oboe
+ */
+class OboePlayer : public Player, public oboe::AudioStreamCallback
+{
+public:
+    OboePlayer(const PcmDevice& pcmDevice, std::shared_ptr<Stream> stream);
+    virtual ~OboePlayer();
+
+    void start() override;
+    void stop() override;
+
+protected:
+    oboe::DataCallbackResult onAudioReady(oboe::AudioStream *oboeStream, void *audioData, int32_t numFrames) override;
+
+    void worker() override;
+
+    oboe::ManagedStream out_stream_;
+
+    size_t ms_;
+    size_t frames_;
+    size_t buff_size;
+    std::shared_ptr<Stream> pubStream_;
+};
+
+
+#endif

client/player/opensl_player.hpp

@@ -16,8 +16,8 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#ifndef OPEN_SL_PLAYER_H
-#define OPEN_SL_PLAYER_H
+#ifndef OPEN_SL_PLAYER_HPP
+#define OPEN_SL_PLAYER_HPP
 
 #include <SLES/OpenSLES.h>
 #include <SLES/OpenSLES_Android.h>
@@ -38,8 +38,8 @@ public:
     OpenslPlayer(const PcmDevice& pcmDevice, std::shared_ptr<Stream> stream);
     virtual ~OpenslPlayer();
 
-    virtual void start();
-    virtual void stop();
+    void start() override;
+    void stop() override;
 
     void playerCallback(SLAndroidSimpleBufferQueueItf bq);
 
@@ -47,7 +47,7 @@ protected:
     void initOpensl();
     void uninitOpensl();
 
-    virtual void worker();
+    void worker() override;
     void throwUnsuccess(const std::string& phase, const std::string& what, SLresult result);
     std::string resultToString(SLresult result) const;
 

externals/Makefile

@@ -14,9 +14,9 @@
 #   You should have received a copy of the GNU General Public License
 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-.PHONY: all check-env flac ogg opus tremor
+.PHONY: all check-env flac ogg opus tremor oboe
 
-all: flac ogg opus tremor
+all: flac ogg opus tremor oboe
 
 check-env:
 #	if [ ! -d "flac" ]; then \
@@ -115,4 +115,14 @@ tremor:	check-env
 	rm stamp-h1; \
 	rm vorbisidec.pc;
 
+oboe: check-env
+	@cd oboe; \
+	export CC="$(CC)"; \
+	export CXX="$(CXX)"; \
+	export CPPFLAGS="$(CPPFLAGS)"; \
+	mkdir build; \
+	cd build; \
+	cmake ..; \
+	make; \
+	make DESTDIR=$(NDK_DIR) install;