148 lines
5.1 KiB
C++
148 lines
5.1 KiB
C++
/*************************************************************************/
|
|
/* audio_stream.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef AUDIO_STREAM_H
|
|
#define AUDIO_STREAM_H
|
|
|
|
#include "resource.h"
|
|
#include "servers/audio/audio_filter_sw.h"
|
|
#include "servers/audio_server.h"
|
|
|
|
class AudioStreamPlayback : public Reference {
|
|
|
|
GDCLASS(AudioStreamPlayback, Reference)
|
|
|
|
public:
|
|
virtual void start(float p_from_pos = 0.0) = 0;
|
|
virtual void stop() = 0;
|
|
virtual bool is_playing() const = 0;
|
|
|
|
virtual int get_loop_count() const = 0; //times it looped
|
|
|
|
virtual float get_playback_position() const = 0;
|
|
virtual void seek(float p_time) = 0;
|
|
|
|
virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) = 0;
|
|
|
|
virtual float get_length() const = 0; //if supported, otherwise return 0
|
|
};
|
|
|
|
class AudioStreamPlaybackResampled : public AudioStreamPlayback {
|
|
|
|
GDCLASS(AudioStreamPlaybackResampled, AudioStreamPlayback)
|
|
|
|
enum {
|
|
FP_BITS = 16, //fixed point used for resampling
|
|
FP_LEN = (1 << FP_BITS),
|
|
FP_MASK = FP_LEN - 1,
|
|
INTERNAL_BUFFER_LEN = 256,
|
|
CUBIC_INTERP_HISTORY = 4
|
|
};
|
|
|
|
AudioFrame internal_buffer[INTERNAL_BUFFER_LEN + CUBIC_INTERP_HISTORY];
|
|
uint64_t mix_offset;
|
|
|
|
protected:
|
|
void _begin_resample();
|
|
virtual void _mix_internal(AudioFrame *p_buffer, int p_frames) = 0;
|
|
virtual float get_stream_sampling_rate() = 0;
|
|
|
|
public:
|
|
virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames);
|
|
|
|
AudioStreamPlaybackResampled() { mix_offset = 0; }
|
|
};
|
|
|
|
class AudioStream : public Resource {
|
|
|
|
GDCLASS(AudioStream, Resource)
|
|
OBJ_SAVE_TYPE(AudioStream) //children are all saved as AudioStream, so they can be exchanged
|
|
|
|
public:
|
|
virtual Ref<AudioStreamPlayback> instance_playback() = 0;
|
|
virtual String get_stream_name() const = 0;
|
|
};
|
|
|
|
class AudioStreamPlaybackRandomPitch;
|
|
|
|
class AudioStreamRandomPitch : public AudioStream {
|
|
|
|
GDCLASS(AudioStreamRandomPitch, AudioStream)
|
|
friend class AudioStreamPlaybackRandomPitch;
|
|
|
|
Set<AudioStreamPlaybackRandomPitch *> playbacks;
|
|
Ref<AudioStream> audio_stream;
|
|
float random_pitch;
|
|
|
|
protected:
|
|
static void _bind_methods();
|
|
|
|
public:
|
|
void set_audio_stream(const Ref<AudioStream> &p_audio_stream);
|
|
Ref<AudioStream> get_audio_stream() const;
|
|
|
|
void set_random_pitch(float p_pitch);
|
|
float get_random_pitch() const;
|
|
|
|
virtual Ref<AudioStreamPlayback> instance_playback();
|
|
virtual String get_stream_name() const;
|
|
|
|
AudioStreamRandomPitch();
|
|
};
|
|
|
|
class AudioStreamPlaybackRandomPitch : public AudioStreamPlayback {
|
|
|
|
GDCLASS(AudioStreamPlaybackRandomPitch, AudioStreamPlayback)
|
|
friend class AudioStreamRandomPitch;
|
|
|
|
Ref<AudioStreamRandomPitch> random_pitch;
|
|
Ref<AudioStreamPlayback> playback;
|
|
Ref<AudioStreamPlayback> playing;
|
|
float pitch_scale;
|
|
|
|
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);
|
|
|
|
virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames);
|
|
|
|
virtual float get_length() const; //if supported, otherwise return 0
|
|
|
|
~AudioStreamPlaybackRandomPitch();
|
|
};
|
|
|
|
#endif // AUDIO_STREAM_H
|