/*************************************************************************/
/*  audio_stream_ogg_vorbis.h                                            */
/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
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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;
	stb_vorbis_alloc ogg_alloc;
	uint32_t frames_mixed;
	bool active;
	int loops;

	friend class AudioStreamOGGVorbis;

	Ref<AudioStreamOGGVorbis> vorbis_stream;

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

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

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

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

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

class AudioStreamOGGVorbis : public AudioStream {

	GDCLASS(AudioStreamOGGVorbis, AudioStream);
	OBJ_SAVE_TYPE(AudioStream) //children are all saved as AudioStream, so they can be exchanged
	RES_BASE_EXTENSION("oggstr");

	friend class AudioStreamPlaybackOGGVorbis;

	void *data;
	uint32_t data_len;

	int decode_mem_size;
	float sample_rate;
	int channels;
	float length;
	bool loop;
	float loop_offset;
	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();
	virtual String get_stream_name() const;

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

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

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

#endif