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godot/modules/chibi/event_stream_chibi.h

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/*************************************************************************/
/* event_stream_chibi.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 EVENT_STREAM_CHIBI_H
#define EVENT_STREAM_CHIBI_H
#include "cp_file_access_wrapper.h"
#include "cp_mixer.h"
#include "cp_player_data.h"
#include "cp_sample_manager.h"
#include "cp_song.h"
#include "io/resource_loader.h"
#include "os/file_access.h"
#include "resource.h"
#include "scene/resources/event_stream.h"
#include "servers/audio_server.h"
/** SAMPLE MANAGER **/
class CPSampleManagerImpl : public CPSampleManager {
struct SampleData {
RID rid;
bool stereo;
bool is16;
int len;
int mixfreq;
int loop_begin;
int loop_end;
int locks;
DVector<uint8_t> lock;
DVector<uint8_t>::Write w;
CPSample_Loop_Type loop_type;
};
_FORCE_INLINE_ SampleData *_getsd(CPSample_ID p_id) {
return ((SampleData *)p_id._private);
}
Set<SampleData *> valid;
public:
_FORCE_INLINE_ RID get_rid(CPSample_ID p_id) { return _getsd(p_id)->rid; }
virtual CPSample_ID create(bool p_16bits, bool p_stereo, int32_t p_len);
virtual void recreate(CPSample_ID p_id, bool p_16bits, bool p_stereo, int32_t p_len);
virtual void destroy(CPSample_ID p_id);
virtual bool check(CPSample_ID p_id); // return false if invalid
virtual void set_c5_freq(CPSample_ID p_id, int32_t p_freq);
virtual void set_loop_begin(CPSample_ID p_id, int32_t p_begin);
virtual void set_loop_end(CPSample_ID p_id, int32_t p_end);
virtual void set_loop_type(CPSample_ID p_id, CPSample_Loop_Type p_type);
virtual void set_chunk(CPSample_ID p_id, int32_t p_index, void *p_data, int p_data_len);
virtual int32_t get_loop_begin(CPSample_ID p_id);
virtual int32_t get_loop_end(CPSample_ID p_id);
virtual CPSample_Loop_Type get_loop_type(CPSample_ID p_id);
virtual int32_t get_c5_freq(CPSample_ID p_id);
virtual int32_t get_size(CPSample_ID p_id);
virtual bool is_16bits(CPSample_ID p_id);
virtual bool is_stereo(CPSample_ID p_id);
virtual bool lock_data(CPSample_ID p_id);
virtual void *get_data(CPSample_ID p_id); /* WARNING: Not all sample managers
may be able to implement this, it depends on the mixer in use! */
virtual int16_t get_data(CPSample_ID p_id, int p_sample, int p_channel = 0); /// Does not need locking
virtual void set_data(CPSample_ID p_id, int p_sample, int16_t p_data, int p_channel = 0); /// Does not need locking
virtual void unlock_data(CPSample_ID p_id);
virtual void get_chunk(CPSample_ID p_id, int32_t p_index, void *p_data, int p_data_len);
};
/** MIXER **/
class CPMixerImpl : public CPMixer {
enum {
MAX_VOICES = 64
};
struct Voice {
AudioMixer::ChannelID channel;
CPSample_ID sample;
float freq_mult;
float reverb;
Voice() { reverb = 0.0; }
};
Voice voices[MAX_VOICES];
int callback_interval;
int callback_timeout;
void (*callback)(void *);
void *userdata;
float voice_scale;
float tempo_scale;
float pitch_scale;
AudioMixer::ReverbRoomType reverb_type;
AudioMixer *mixer;
public:
void process_usecs(int p_usec, float p_volume, float p_pitch_scale, float p_tempo_scale);
/* Callback */
virtual void set_callback_interval(int p_interval_us); //in usecs, for tracker it's 2500000/tempo
virtual void set_callback(void (*p_callback)(void *), void *p_userdata);
/* Voice Control */
virtual void setup_voice(int p_voice_index, CPSample_ID p_sample_id, int32_t p_start_index);
virtual void stop_voice(int p_voice_index);
virtual void set_voice_frequency(int p_voice_index, int32_t p_freq); //in freq*FREQUENCY_BITS
virtual void set_voice_panning(int p_voice_index, int p_pan);
virtual void set_voice_volume(int p_voice_index, int p_vol);
virtual void set_voice_filter(int p_filter, bool p_enabled, uint8_t p_cutoff, uint8_t p_resonance);
virtual void set_voice_reverb_send(int p_voice_index, int p_reverb);
virtual void set_voice_chorus_send(int p_voice_index, int p_chorus); /* 0 - 255 */
virtual void set_reverb_mode(ReverbMode p_mode);
virtual void set_chorus_params(unsigned int p_delay_ms, unsigned int p_separation_ms, unsigned int p_depth_ms10, unsigned int p_speed_hz10);
/* Info retrieving */
virtual int32_t get_voice_sample_pos_index(int p_voice_index);
virtual int get_voice_panning(int p_voice_index);
virtual int get_voice_volume(int p_voice_index);
virtual CPSample_ID get_voice_sample_id(int p_voice_index);
virtual bool is_voice_active(int p_voice_index);
virtual int get_active_voice_count() { return 0; }
virtual int get_total_voice_count() { return MAX_VOICES; }
virtual uint32_t get_mix_frequency() { return 0; }
/* Methods below only work with software mixers, meant for software-based sound drivers, hardware mixers ignore them */
virtual int32_t process(int32_t p_frames) { return 0; }
virtual int32_t *get_mixdown_buffer_ptr() { return NULL; }
virtual void set_mix_frequency(int32_t p_mix_frequency){};
CPMixerImpl(AudioMixer *p_mixer = NULL);
virtual ~CPMixerImpl() {}
};
/** FILE ACCESS **/
class CPFileAccessWrapperImpl : public CPFileAccessWrapper {
FileAccess *f;
public:
virtual Error open(const char *p_filename, int p_mode_flags);
virtual void close();
virtual void seek(uint32_t p_position);
virtual void seek_end();
virtual uint32_t get_pos();
virtual bool eof_reached();
virtual uint8_t get_byte();
virtual void get_byte_array(uint8_t *p_dest, int p_elements);
virtual void get_word_array(uint16_t *p_dest, int p_elements);
virtual uint16_t get_word();
virtual uint32_t get_dword();
virtual void set_endian_conversion(bool p_swap);
virtual bool is_open();
virtual Error get_error();
virtual void store_byte(uint8_t p_dest);
virtual void store_byte_array(const uint8_t *p_dest, int p_elements);
virtual void store_word(uint16_t p_dest);
virtual void store_dword(uint32_t p_dest);
CPFileAccessWrapperImpl() { f = NULL; }
virtual ~CPFileAccessWrapperImpl() {
if (f) memdelete(f);
}
};
/////////////////////
class EventStreamChibi;
class EventStreamPlaybackChibi : public EventStreamPlayback {
OBJ_TYPE(EventStreamPlaybackChibi, EventStreamPlayback);
CPMixerImpl mixer;
uint64_t total_usec;
Ref<EventStreamChibi> stream;
mutable CPPlayer *player;
bool loop;
int last_order;
int loops;
virtual Error _play();
virtual bool _update(AudioMixer *p_mixer, uint64_t p_usec);
virtual void _stop();
float volume;
float tempo_scale;
float pitch_scale;
public:
virtual void set_paused(bool p_paused);
virtual bool is_paused() const;
virtual void set_loop(bool p_loop);
virtual bool is_loop_enabled() const;
virtual int get_loop_count() const;
virtual float get_pos() const;
virtual void seek_pos(float p_time);
virtual void set_volume(float p_vol);
virtual float get_volume() const;
virtual void set_pitch_scale(float p_pitch_scale);
virtual float get_pitch_scale() const;
virtual void set_tempo_scale(float p_tempo_scale);
virtual float get_tempo_scale() const;
virtual void set_channel_volume(int p_channel, float p_volume);
virtual float get_channel_volume(int p_channel) const;
virtual float get_last_note_time(int p_channel) const;
EventStreamPlaybackChibi(Ref<EventStreamChibi> p_stream = Ref<EventStreamChibi>());
~EventStreamPlaybackChibi();
};
class EventStreamChibi : public EventStream {
OBJ_TYPE(EventStreamChibi, EventStream);
friend class ResourceFormatLoaderChibi;
friend class EventStreamPlaybackChibi;
//I think i didn't know what const was when i wrote this more than a decade ago
//so it goes mutable :(
mutable CPSong song;
public:
virtual Ref<EventStreamPlayback> instance_playback();
virtual String get_stream_name() const;
virtual float get_length() const;
virtual int get_channel_count() const { return 64; } //tracker limit
EventStreamChibi();
};
class ResourceFormatLoaderChibi : public ResourceFormatLoader {
public:
virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
virtual bool handles_type(const String &p_type) const;
virtual String get_resource_type(const String &p_path) const;
};
void initialize_chibi();
void finalize_chibi();
#endif // EVENT_STREAM_CHIBI_H
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