101 lines
No EOL
2.7 KiB
C++
101 lines
No EOL
2.7 KiB
C++
#pragma once
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#include <SDL_mixer.h>
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#include <thread>
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#include <SDL.h>
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#include <SDL_audio.h>
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#include <string>
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#include <atomic>
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#include <mutex>
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#include <SoundTouch.h>
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#include <span>
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#include <optional>
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#include <vector>
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#include <queue>
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using namespace soundtouch;
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using std::span;
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using std::optional;
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using std::vector;
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using std::queue;
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enum {
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PlaybackSignalNone = 0,
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PlaybackSignalFileChanged = 1 << 0,
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PlaybackSignalSpeedChanged = 1 << 1,
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PlaybackSignalTempoChanged = 1 << 2,
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PlaybackSignalPitchChanged = 1 << 3,
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PlaybackSignalPaused = 1 << 4,
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PlaybackSignalResumed = 1 << 5,
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PlaybackSignalStopped = 1 << 6,
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PlaybackSignalErrorOccurred = 1 << 7,
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PlaybackSignalSeeked = 1 << 8,
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PlaybackSignalStarted = 1 << 9
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};
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class Playback {
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private:
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std::string filePath;
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std::atomic_bool running;
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std::atomic_bool file_changed;
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std::atomic_bool seeking;
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std::atomic_bool update;
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std::atomic_bool restart;
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std::atomic_bool playback_ready;
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std::atomic_bool speed_changed;
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std::atomic_bool tempo_changed;
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std::atomic_bool pitch_changed;
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std::atomic_bool pause_changed;
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std::mutex flag_mutex;
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std::mutex error_mutex;
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std::thread thread;
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double position;
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double length;
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bool paused;
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Uint8* buf;
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size_t bufsize;
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Mix_CommonMixer_t general_mixer;
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SDL_AudioDeviceID device;
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SoundTouch *st;
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SDL_AudioSpec spec;
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/// @brief A fake SDL_AudioSpec used to trick SDL Mixer X into allocating a bigger buffer.
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SDL_AudioSpec fakespec;
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void SDLCallbackInner(Uint8 *stream, int len);
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static void SDLCallback(void *userdata, Uint8 *stream, int len);
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Mix_Music *Load(const char* file);
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void Unload(Mix_Music* music);
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void ThreadFunc();
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void UpdateST();
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double GetMaxSeconds();
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queue<std::string> errors;
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std::mutex current_file_mutex;
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std::optional<std::string> current_file;
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uint16_t signals_occurred = PlaybackSignalNone;
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std::mutex signal_mutex;
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void set_signal(uint16_t signal);
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float prev_pitch, prev_speed, prev_tempo;
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public:
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Playback();
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~Playback();
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std::optional<std::string> get_current_file();
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double GetPosition();
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double GetLength();
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void Seek(double position);
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void Start(std::string filePath);
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bool IsPaused();
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void Pause();
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void Stop();
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void Update();
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bool IsStopped();
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float volume;
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float speed;
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float tempo;
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float pitch;
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float MaxSeconds = 100.0;
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float MaxSpeed = 4.0;
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float MaxPitch = 4.0;
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float MaxTempo = 4.0;
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float MinSpeed = 0.25;
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float MinPitch = 0.25;
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float MinTempo = 0.25;
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uint16_t handle_signals(uint16_t signal);
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optional<std::string> GetError();
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bool ErrorExists();
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}; |