203 lines
7.6 KiB
C
203 lines
7.6 KiB
C
/**********************************************************************************
|
|
Common Audio plugin spec, version #1.1 maintained by zilmar (zilmar@emulation64.com)
|
|
|
|
All questions or suggestions should go through the mailing list.
|
|
http://www.egroups.com/group/Plugin64-Dev
|
|
**********************************************************************************
|
|
Notes:
|
|
------
|
|
|
|
Setting the approprate bits in the MI_INTR_REG and calling CheckInterrupts which
|
|
are both passed to the DLL in InitiateAudio will generate an Interrupt from with in
|
|
the plugin.
|
|
|
|
**********************************************************************************/
|
|
#ifndef _AUDIO_H_INCLUDED__
|
|
#define _AUDIO_H_INCLUDED__
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Note: BOOL, BYTE, WORD, DWORD, TRUE, FALSE are defined in windows.h */
|
|
|
|
#define PLUGIN_TYPE_AUDIO 3
|
|
|
|
#define EXPORT __declspec(dllexport)
|
|
#define CALL _cdecl
|
|
|
|
#define SYSTEM_NTSC 0
|
|
#define SYSTEM_PAL 1
|
|
#define SYSTEM_MPAL 2
|
|
|
|
/***** Structures *****/
|
|
typedef struct {
|
|
WORD Version; /* Should be set to 0x0101 */
|
|
WORD Type; /* Set to PLUGIN_TYPE_AUDIO */
|
|
char Name[100]; /* Name of the DLL */
|
|
|
|
/* If DLL supports memory these memory options then set them to TRUE or FALSE
|
|
if it does not support it */
|
|
BOOL NormalMemory; /* a normal BYTE array */
|
|
BOOL MemoryBswaped; /* a normal BYTE array where the memory has been pre
|
|
bswap on a dword (32 bits) boundry */
|
|
} PLUGIN_INFO;
|
|
|
|
|
|
typedef struct {
|
|
HWND hwnd;
|
|
HINSTANCE hinst;
|
|
|
|
BOOL MemoryBswaped; // If this is set to TRUE, then the memory has been pre
|
|
// bswap on a dword (32 bits) boundry
|
|
// eg. the first 8 bytes are stored like this:
|
|
// 4 3 2 1 8 7 6 5
|
|
BYTE * HEADER; // This is the rom header (first 40h bytes of the rom
|
|
// This will be in the same memory format as the rest of the memory.
|
|
BYTE * RDRAM;
|
|
BYTE * DMEM;
|
|
BYTE * IMEM;
|
|
|
|
DWORD * MI_INTR_REG;
|
|
|
|
DWORD * AI_DRAM_ADDR_REG;
|
|
DWORD * AI_LEN_REG;
|
|
DWORD * AI_CONTROL_REG;
|
|
DWORD * AI_STATUS_REG;
|
|
DWORD * AI_DACRATE_REG;
|
|
DWORD * AI_BITRATE_REG;
|
|
|
|
void (*CheckInterrupts)( void );
|
|
} AUDIO_INFO;
|
|
|
|
/******************************************************************
|
|
Function: AiDacrateChanged
|
|
Purpose: This function is called to notify the dll that the
|
|
AiDacrate registers value has been changed.
|
|
input: The System type:
|
|
SYSTEM_NTSC 0
|
|
SYSTEM_PAL 1
|
|
SYSTEM_MPAL 2
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL AiDacrateChanged (int SystemType);
|
|
|
|
/******************************************************************
|
|
Function: AiLenChanged
|
|
Purpose: This function is called to notify the dll that the
|
|
AiLen registers value has been changed.
|
|
input: none
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL AiLenChanged (void);
|
|
|
|
/******************************************************************
|
|
Function: AiReadLength
|
|
Purpose: This function is called to allow the dll to return the
|
|
value that AI_LEN_REG should equal
|
|
input: none
|
|
output: The amount of bytes still left to play.
|
|
*******************************************************************/
|
|
EXPORT DWORD CALL AiReadLength (void);
|
|
|
|
/******************************************************************
|
|
Function: AiUpdate
|
|
Purpose: This function is called to allow the dll to update
|
|
things on a regular basis (check how long to sound to
|
|
go, copy more stuff to the buffer, anyhting you like).
|
|
The function is designed to go in to the message loop
|
|
of the main window ... but can be placed anywhere you
|
|
like.
|
|
input: if Wait is set to true, then this function should wait
|
|
till there is a messgae in the its message queue.
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL AiUpdate (BOOL Wait);
|
|
|
|
/******************************************************************
|
|
Function: CloseDLL
|
|
Purpose: This function is called when the emulator is closing
|
|
down allowing the dll to de-initialise.
|
|
input: none
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL CloseDLL (void);
|
|
|
|
/******************************************************************
|
|
Function: DllAbout
|
|
Purpose: This function is optional function that is provided
|
|
to give further information about the DLL.
|
|
input: a handle to the window that calls this function
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL DllAbout ( HWND hParent );
|
|
|
|
/******************************************************************
|
|
Function: DllConfig
|
|
Purpose: This function is optional function that is provided
|
|
to allow the user to configure the dll
|
|
input: a handle to the window that calls this function
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL DllConfig ( HWND hParent );
|
|
|
|
/******************************************************************
|
|
Function: DllTest
|
|
Purpose: This function is optional function that is provided
|
|
to allow the user to test the dll
|
|
input: a handle to the window that calls this function
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL DllTest ( HWND hParent );
|
|
|
|
/******************************************************************
|
|
Function: GetDllInfo
|
|
Purpose: This function allows the emulator to gather information
|
|
about the dll by filling in the PluginInfo structure.
|
|
input: a pointer to a PLUGIN_INFO stucture that needs to be
|
|
filled by the function. (see def above)
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL GetDllInfo ( PLUGIN_INFO * PluginInfo );
|
|
|
|
/******************************************************************
|
|
Function: InitiateSound
|
|
Purpose: This function is called when the DLL is started to give
|
|
information from the emulator that the n64 audio
|
|
interface needs
|
|
Input: Audio_Info is passed to this function which is defined
|
|
above.
|
|
Output: TRUE on success
|
|
FALSE on failure to initialise
|
|
|
|
** note on interrupts **:
|
|
To generate an interrupt set the appropriate bit in MI_INTR_REG
|
|
and then call the function CheckInterrupts to tell the emulator
|
|
that there is a waiting interrupt.
|
|
*******************************************************************/
|
|
EXPORT BOOL CALL InitiateAudio (AUDIO_INFO Audio_Info);
|
|
|
|
/******************************************************************
|
|
Function: ProcessAList
|
|
Purpose: This function is called when there is a Alist to be
|
|
processed. The Dll will have to work out all the info
|
|
about the AList itself.
|
|
input: none
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL ProcessAList(void);
|
|
|
|
/******************************************************************
|
|
Function: RomClosed
|
|
Purpose: This function is called when a rom is closed.
|
|
input: none
|
|
output: none
|
|
*******************************************************************/
|
|
EXPORT void CALL RomClosed (void);
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|