godot/drivers/mpc/audio_stream_mpc.h
Juan Linietsky 9741374617 Rewrite of the AudioStream API
-Fixes long-standing issues regarding to playing a single stream multiple times simultanteously
-Fixes wrong-looping, starting, caching, etc. Issues resulting from bad original design
-Allows more interesting kinds of streams (stream graphs with streams inside streams!) in the future
2015-09-09 18:50:52 -03:00

120 lines
2.8 KiB
C++

#ifndef AUDIO_STREAM_MPC_H
#define AUDIO_STREAM_MPC_H
#include "scene/resources/audio_stream.h"
#include "os/file_access.h"
#include "mpc/mpcdec.h"
#include "os/thread_safe.h"
#include "io/resource_loader.h"
//#include "../libmpcdec/decoder.h"
//#include "../libmpcdec/internal.h"
class AudioStreamPlaybackMPC : public AudioStreamPlayback {
OBJ_TYPE( AudioStreamPlaybackMPC, AudioStreamPlayback );
bool preload;
FileAccess *f;
String file;
DVector<uint8_t> data;
int data_ofs;
int streamlen;
bool active;
bool paused;
bool loop;
int loops;
// mpc
mpc_reader reader;
mpc_demux* demux;
mpc_streaminfo si;
MPC_SAMPLE_FORMAT sample_buffer[MPC_DECODER_BUFFER_LENGTH];
static mpc_int32_t _mpc_read(mpc_reader *p_reader,void *p_dst, mpc_int32_t p_bytes);
static mpc_bool_t _mpc_seek(mpc_reader *p_reader,mpc_int32_t p_offset);
static mpc_int32_t _mpc_tell(mpc_reader *p_reader);
static mpc_int32_t _mpc_get_size(mpc_reader *p_reader);
static mpc_bool_t _mpc_canseek(mpc_reader *p_reader);
int stream_min_size;
int stream_rate;
int stream_channels;
protected:
Error _open_file();
void _close_file();
int _read_file(void *p_dst,int p_bytes);
bool _seek_file(int p_pos);
int _tell_file() const;
int _sizeof_file() const;
bool _canseek_file() const;
Error _reload();
static void _bind_methods();
public:
void set_file(const String& p_file);
String get_file() const;
virtual void play(float p_offset=0);
virtual void stop();
virtual bool is_playing() const;
virtual void set_loop(bool p_enable);
virtual bool has_loop() const;
virtual float get_length() const;
virtual String get_stream_name() const;
virtual int get_loop_count() const;
virtual float get_pos() const;
virtual void seek_pos(float p_time);
virtual int get_channels() const { return stream_channels; }
virtual int get_mix_rate() const { return stream_rate; }
virtual int get_minimum_buffer_size() const { return stream_min_size; }
virtual int mix(int16_t* p_bufer,int p_frames);
virtual void set_loop_restart_time(float p_time) { }
AudioStreamPlaybackMPC();
~AudioStreamPlaybackMPC();
};
class AudioStreamMPC : public AudioStream {
OBJ_TYPE( AudioStreamMPC, AudioStream );
String file;
public:
Ref<AudioStreamPlayback> instance_playback() {
Ref<AudioStreamPlaybackMPC> pb = memnew( AudioStreamPlaybackMPC );
pb->set_file(file);
return pb;
}
void set_file(const String& p_file) { file=p_file; }
};
class ResourceFormatLoaderAudioStreamMPC : 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;
};
#endif // AUDIO_STREAM_MPC_H