virtualx-engine/modules/stb_vorbis/audio_stream_ogg_vorbis.h

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/*  audio_stream_ogg_vorbis.h                                            */
/*************************************************************************/
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#ifndef AUDIO_STREAM_STB_VORBIS_H
#define AUDIO_STREAM_STB_VORBIS_H

#include "core/io/resource_loader.h"
#include "servers/audio/audio_stream.h"

#include "thirdparty/misc/stb_vorbis.h"

class AudioStreamOGGVorbis;

class AudioStreamPlaybackOGGVorbis : public AudioStreamPlaybackResampled {
	GDCLASS(AudioStreamPlaybackOGGVorbis, AudioStreamPlaybackResampled);

	stb_vorbis *ogg_stream = nullptr;
	stb_vorbis_alloc ogg_alloc;
	uint32_t frames_mixed = 0;
	bool active = false;
	int loops = 0;

	friend class AudioStreamOGGVorbis;

	Ref<AudioStreamOGGVorbis> vorbis_stream;

protected:
	virtual int _mix_internal(AudioFrame *p_buffer, int p_frames) override;
	virtual float get_stream_sampling_rate() override;

public:
	virtual void start(float p_from_pos = 0.0) override;
	virtual void stop() override;
	virtual bool is_playing() const override;

	virtual int get_loop_count() const override; //times it looped

	virtual float get_playback_position() const override;
	virtual void seek(float p_time) override;

	AudioStreamPlaybackOGGVorbis() {}
	~AudioStreamPlaybackOGGVorbis();
};

class AudioStreamOGGVorbis : public AudioStream {
	GDCLASS(AudioStreamOGGVorbis, AudioStream);
	OBJ_SAVE_TYPE(AudioStream); // Saves derived classes with common type so they can be interchanged.
	RES_BASE_EXTENSION("oggstr");

	friend class AudioStreamPlaybackOGGVorbis;

	void *data = nullptr;
	uint32_t data_len = 0;

	int decode_mem_size = 0;
	float sample_rate = 1.0;
	int channels = 1;
	float length = 0.0;
	bool loop = false;
	float loop_offset = 0.0;
	void clear_data();

protected:
	static void _bind_methods();

public:
	void set_loop(bool p_enable);
	bool has_loop() const;

	void set_loop_offset(float p_seconds);
	float get_loop_offset() const;

	virtual Ref<AudioStreamPlayback> instance_playback() override;
	virtual String get_stream_name() const override;

	void set_data(const Vector<uint8_t> &p_data);
	Vector<uint8_t> get_data() const;

	virtual float get_length() const override; //if supported, otherwise return 0

	AudioStreamOGGVorbis();
	virtual ~AudioStreamOGGVorbis();
};

#endif