blob: d97590e04e4e36be71e1976a0e3de324af7fadbb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
#ifndef __JIN_SOURCE_SDL_H
#define __JIN_SOURCE_SDL_H
#include <vector>
#include <queue>
#include <stack>
#include <exception>
#include "../source.h"
namespace jin
{
namespace audio
{
struct SDLSourceCommand;
class SDLSource : public Source
{
public:
enum Type
{
WAV = 1,
OGG = 2,
};
SDLSource(Type format, void* mem, int size) ;
~SDLSource();
/* ISource interface */
void play() override;
void stop() override;
void pause() override;
void resume() override;
void rewind() override;
void isStopped() const override;
void isPaused() const override;
void isFinished() const override;
void setPitch(float pitch) override;
void setVolume(float volume) override;
bool setLoop(bool loop) override;
void setRate(float rate) override;
private:
friend class SDLSourceManager;
void loadWAV(void* mem, int size);
void loadOGG(void* mem, int size);
inline bool is(int state) { return (status & state) == state; }
struct
{
const void* data; // Ƶ
int length; // dataֽڳ
void* end; // dataβ = (unsigned char*)data + length
int rate; // Ƶ
unsigned char bitdepth; // ÿsampleıس
int samples; // sample = length / (bitdepth / 8)
unsigned char channel; // channel12
char silence; // 0
} raw;
/* Procedure controller variable */
int pos; // ǰŵλ
int pitch; // pitch
int status; // ǰ״̬
bool loop; // loop or not
};
class SDLSourceManager
{
public:
static SDLSourceManager* get();
/* Process function */
static void processCommands();
static void processSources(Uint8* buffer, int len);
private:
friend class SDLSource;
static void removeSource(SDLSource* source);
static void pushSource(SDLSource* source);
static SDLSourceCommand* getCommand();
static void pushCommand(SDLSourceCommand* cmd);
static void collectCommand(SDLSourceCommand* cmd);
static SDLSourceManager* manager;
static std::queue<SDLSourceCommand*> commands;
static std::stack<SDLSourceCommand*> commandsPool;
static std::vector<SDLSource*> sources; // processing sources
};
class SourceException : public std::exception
{
const char * what() const throw ()
{
return "Load Source Exception";
}
};
}
}
#endif
|
