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godot/modules/chibi/event_stream_chibi.h
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

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/*************************************************************************/
/* event_stream_chibi.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "scene/resources/event_stream.h"
#include "cp_sample_manager.h"
#include "cp_mixer.h"
#include "cp_song.h"
#include "cp_file_access_wrapper.h"
#include "cp_player_data.h"
#include "resource.h"
#include "servers/audio_server.h"
#include "os/file_access.h"
#include "io/resource_loader.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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