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#if !defined(_UTILS_H_INCLUDED_)
#define _UTILS_H_INCLUDED_
#include "../pfc/pfc.h"
class NOVTABLE CStream
{
public:
virtual UINT ReadData(void*,UINT,bool*)=0;
virtual void Flush()=0;
virtual ~CStream() {};
//for sampling
virtual void Pause(int) {};
virtual void Eof() {}
};
class CPipe : public CStream
{
BYTE* buf;
volatile UINT buf_s,buf_n,buf_rp,buf_wp;
critical_section sec;
UINT align;
volatile bool closed;
public:
void WriteData(void*,UINT);
UINT CanWrite() {return buf_s-buf_n;}
UINT ReadData(void*,UINT,bool*);
void Flush()
{
sec.enter();
buf_n=0;
sec.leave();
}
CPipe(UINT _align=4,UINT freq=44100)
{
buf_s=MulDiv(1024*256,freq,22050);
buf=(BYTE*)malloc(buf_s);
buf_wp=buf_rp=0;
buf_n=0;
align=_align;
closed=0;
}
~CPipe()
{
if (buf) free(buf);
}
void Eof() {closed=1;}
};
class MIDI_file;
#pragma pack(push)
#pragma pack(1)
typedef struct
{
WORD fmt,trax,dtx;
} MIDIHEADER;
#pragma pack(pop)
WORD _inline rev16(WORD x) {return (x>>8)|(x<<8);}
//#define rev16(X) (((X)&0xFF)<<8)|(((X)>>8)&0xFF)
DWORD _fastcall rev32(DWORD);
#define _rv(X) ((((DWORD)(X)&0xFF)<<24)|(((DWORD)(X)&0xFF00)<<8)|(((DWORD)(X)&0xFF0000)>>8)|(((DWORD)(X)&0xFF000000)>>24))
#define FixHeader(H) {(H).fmt=rev16((H).fmt);(H).trax=rev16((H).trax);(H).dtx=rev16((H).dtx);}
struct write_buf;
typedef struct
{
int pos,tm;
} TMAP_ENTRY;
struct CTempoMap
{
public:
TMAP_ENTRY *data;
int pos,size;
void AddEntry(int _p,int tm);
~CTempoMap() {if (data) free(data);}
int BuildTrack(grow_buf & out);
};
CTempoMap* tmap_merge(CTempoMap*,CTempoMap*);
typedef struct
{
int pos,ofs,len;
} SYSEX_ENTRY;
struct CSysexMap
{
public:
DWORD d_size,e_size;
SYSEX_ENTRY *events;
BYTE* data;
int pos,d_pos;
void CleanUp();
void AddEvent(const BYTE* e,DWORD s,DWORD t);
~CSysexMap();
CSysexMap* Translate(MIDI_file* _mf);//MIDI_file* mf
int BuildTrack(grow_buf & out);
const char* GetType();
};
typedef struct tagKAR
{
UINT time;
UINT start,end;
BOOL foo;
} KAR_ENTRY;
KAR_ENTRY * kmap_create(MIDI_file* mf,UINT prec,UINT * num,char** text);
CTempoMap* tmap_create();
CSysexMap* smap_create();
int EncodeDelta(BYTE* dst,int d);
unsigned int DecodeDelta(const BYTE* src,unsigned int* _d, unsigned int limit=-1);
int ReadSysex(const BYTE* src,int ml);
char* BuildFilterString(UINT res_id, char* ext, int* len);
BOOL DoOpenFile(HWND w,char* fn,UINT res_id,char* ext,BOOL save);
typedef void (*SYSEXFUNC)(void*,BYTE*,UINT);
void sysex_startup(SYSEXFUNC,void*);
void sysex_startup_midiout(UINT m_id);
bool need_sysex_start();
typedef struct
{
DWORD tm;
DWORD ev;
} MIDI_EVENT;
MIDI_EVENT* do_table(MIDI_file* mf,UINT prec,UINT * size,UINT* _lstart,DWORD cflags);
void gb_write_delta(grow_buf & gb,DWORD d);
void do_messages(HWND w,bool* br);
ATOM do_callback_class(WNDPROC p);
HWND create_callback_wnd(ATOM cl,void* p);
class sysex_table
{
private:
struct entry
{
entry * next;
int size,time;
BYTE * data;
};
entry * entries;
enum {MHP_MAGIC='0PHM'};
public:
sysex_table() {entries=0;}
~sysex_table() {reset();}
int num_entries() const;
int get_entry(int idx,BYTE ** p_data,int * p_size,int * p_time) const;
void insert_entry(int idx,BYTE * data,int size,int time);
int remove_entry(int idx);
inline void add_entry(BYTE * data,int size,int time) {insert_entry(num_entries(),data,size,time);}
inline void modify_entry(int idx,BYTE * data,int size,int time) {remove_entry(idx);insert_entry(idx,data,size,time);}
inline void reset() {while(entries) remove_entry(0);}
inline int get_time(int idx) const {int time;return get_entry(idx,0,0,&time) ? time : 0;}
int file_read(const char * path);
int file_write(const char * path) const;
void * memblock_write(int * size) const;
int memblock_read(const void * ptr,int size);
int print_preview(int idx,char * out) const;
void print_edit(int idx,HWND wnd) const;
void copy(const sysex_table & src);
sysex_table(const sysex_table & src) {entries=0;copy(src);}
sysex_table& operator=(const sysex_table & src) {copy(src);return *this;}
int is_empty() {return !entries;}
};
#endif
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