big merge

components/spotify/cspot/include/ChunkedAudioStream.h

@@ -0,0 +1,75 @@
+#ifndef CHUNKEDAUDIOSTREAM_H
+#define CHUNKEDAUDIOSTREAM_H
+
+#include <iostream>
+#include <vector>
+#include <fstream>
+#include <array>
+#include <unistd.h>
+#include <atomic>
+#include "ivorbisfile.h"
+#include "MercuryManager.h"
+#include "AudioSink.h"
+#include "AudioChunk.h"
+#include "platform/WrappedMutex.h"
+
+#define SPOTIFY_HEADER_SIZE 167
+#define BUFFER_SIZE 0x20000 * 1.5
+typedef std::function<void(std::vector<uint8_t>&)> pcmDataCallback;
+
+enum class Whence
+{
+    START,
+    CURRENT,
+    END
+};
+
+class ChunkedAudioStream
+{
+private:
+    // Vorbis related
+    OggVorbis_File vorbisFile;
+    ov_callbacks vorbisCallbacks;
+    int currentSection;
+
+    // Audio chunking
+    std::vector<uint8_t> audioKey;
+    std::vector<std::shared_ptr<AudioChunk>> chunks;
+
+    // Audio data
+    uint32_t duration;
+
+    bool loadingChunks = false;
+    uint16_t lastSequenceId = 0;
+
+    std::shared_ptr<MercuryManager> manager;
+    std::vector<uint8_t> fileId;
+    uint32_t startPositionMs;
+
+    std::shared_ptr<AudioChunk> requestChunk(size_t chunkIndex);
+    void fetchTraillingPacket();
+    std::shared_ptr<AudioChunk> findChunkForPosition(size_t position);
+
+public:
+    ChunkedAudioStream(std::vector<uint8_t> fileId, std::vector<uint8_t> audioKey, uint32_t duration, std::shared_ptr<MercuryManager> manager, uint32_t startPositionMs, bool isPaused);
+    ~ChunkedAudioStream();
+    int requestedChunkIndex = 0;
+    std::function<void()> streamFinishedCallback;
+    size_t pos = SPOTIFY_HEADER_SIZE; // size of some spotify header
+    uint32_t fileSize;
+    uint32_t readBeforeSeek = 0;
+    bool loadingMeta = true;
+    std::atomic<bool> isPaused = false;
+    std::atomic<bool> isRunning = false;
+    std::atomic<bool> finished = false;
+    pcmDataCallback pcmCallback;
+    std::shared_ptr<AudioSink> audioSink;
+    WrappedMutex seekMutex;
+
+    std::vector<uint8_t> read(size_t bytes);
+    void seekMs(uint32_t positionMs);
+    void seek(size_t pos, Whence whence);
+    void startPlaybackLoop();
+};
+
+#endif