gamepad.c

代码有点长,需细心阅读,仅供影音视听类产品的开发人员参考

#include "config.h"
#include "user_init.h"
#ifdef SUPPORT_GAME
#include "global.h"
#include "regmap.h"
#include "epp.h"
#include "func.h"
#include "cdfunc.h"
#include "osd.h"
#include "hwsetup.h"
#include "fs9660.h"
//sound
#include "auregs.h"
#include "pcm.h"

#include "game.h"
#include "avd.h"

#include "bitop.h"
#include "ircode.h"
#include "irconfig.h"
#include "memmap.h"
#include "macro.h"


extern BYTE vfd_keycode[];
extern UINT8 zhx_volume;
//PCM FIFO start word address.
#define CH_START        0
#define PCM_FIFO_SIZE   (2048-32)

extern char *file_ext_name(UINT16);

static const unsigned char game_color_index[64 * 3] = {
    103, 128, 128,
    35, 217, 113,
    35, 217, 113,
    62, 202, 158,
    75, 194, 180,
    83, 164, 206,
    68, 97, 217,
    81, 90, 176,
    93, 83, 135,
    93, 83, 71,
    98, 105, 68,
    103, 128, 64,
    82, 165, 79,
    16, 128, 128,
    16, 128, 128,
    16, 128, 128,
    147, 128, 128,
    118, 195, 53,
    40, 239, 109,
    67, 224, 154,
    93, 209, 199,
    101, 179, 225,
    81, 90, 239,
    132, 60, 202,
    145, 53, 161,
    145, 53, 97,
    118, 68, 52,
    128, 113, 45,
    138, 158, 38,
    16, 128, 128,
    16, 128, 128,
    16, 128, 128,
    235, 128, 128,
    131, 187, 75,
    144, 180, 98,
    157, 172, 120,
    170, 165, 143,
    183, 157, 165,
    173, 112, 172,
    168, 90, 176,
    194, 75, 157,
    170, 38, 78,
    144, 53, 34,
    154, 98, 26,
    169, 165, 16,
    103, 128, 128,
    59, 128, 128,
    16, 128, 128,
    235, 128, 128,
    183, 157, 101,
    196, 150, 124,
    196, 150, 124,
    209, 142, 146,
    209, 142, 146,
    204, 120, 150,
    204, 120, 150,
    199, 98, 154,
    211, 90, 112,
    198, 98, 90,
    203, 120, 86,
    208, 143, 83,
    147, 128, 128,
    59, 128, 128,
    16, 128, 128
};

/*
BYTE origin_code(BYTE code,BYTE type)
translate mapped code to original code
parameter: type=0,common ir code
           type=1,lcd panel code
           type=2,vfd panel code
           lcd_cnt:the lcd key is the second time we found
SUNPLUS huziqin 2003-3-29 9:11
*/
BYTE origin_code(BYTE KeyCode,BYTE type)
{
    BYTE addr;
    
    if(type==1) {                           //ZHX 061003 
       for(addr=0x40;addr<=0x5f;addr++) {      //0x80-0x9f
             if(ir_mapcode[addr] == KeyCode)
                break;
        }
       if((ir_mapcode[0x5f]==KeyCode)||(addr < 0x5f))
           addr += 0x40;
        else
       	   addr = 0xff;
    	}
    else {
       for(addr=0;addr<=0x3f;addr++)             //0x00-0x5f 
        {
              if(type == 0) {
                   if(ir_mapcode[addr] == KeyCode)
                break;
        }
              else {
                   if(vfd_keycode[addr] == KeyCode)
                      break;  
                }
    	   }
        if (!type) {
             if((ir_mapcode[0x3f]==KeyCode)||(addr > 0x1f))
                  addr += 0x20;
             else if (addr==0x3f)
       	          addr = 0xff;
          }
        else {
             if (addr==0x3f)
                 addr = 0xfe;	
          }
    }
    return addr;
}

#define ir_code(x)    origin_code(x,0)
#define lcd_code(x)    origin_code(x,1)
#define vfd_code(x)    (origin_code(x,2)+1)

void game_init()
{
    int     i, temp0, temp1;

#if CONFIG==CONFIG_COMBO_SVCD
	
	/*
	regs0->ref0_luma,regs0->ref1_luma for game use,height need 240
	regs0->ref0_chroma,regs0->ref1_chroma are no use in game mode
	*/
	#ifdef SUPPORT_BOOMBOX_ESP
    	regs0->ref0_luma = (CDDA_OFFSET+MP3_OFFSET_XADD);//61
    	regs0->ref0_chroma = (CDDA_OFFSET+MP3_OFFSET_XADD);//61
    	regs0->ref1_luma = (CDDA_OFFSET+MP3_OFFSET_XADD+240);//301
    	regs0->ref1_chroma = (CDDA_OFFSET+MP3_OFFSET_XADD);//61
	#else
    	regs0->ref0_luma = 0;
    	regs0->ref0_chroma = 0;
    	regs0->ref1_luma = 240;
    	regs0->ref1_chroma = 0;
    #endif
    
    regs0->audya = GAME_AUD_START;


    //switch to game mode 256x240
    regs0->dis_pic_id = 0;
    regs0->dis_x_start = 0;
    regs0->dis_y_start = 0;
    regs0->dis_x_size = 256;
    regs0->dis_y_size = 236;

    regs0->linesize = 2;                    //RF_LINESIZE_256;


    //clear screen
    {
        char   *p;
        int     x, y;

        p = (BYTE *) (SDRAM_BASE + regs0->ref0_luma * 1024);

        for(y = 0; y < 240; y++)
        {
            for(x = 0; x < 256; x++)
                p[x] = 0;
            p = p + 1024;
        }

    }
#else

    config_framebuffer(MEM_CONFIG_LORES);

    regs0->audya = GAME_AUD_START;
    regs0->ref0_luma = FRAM0_START;
    regs0->ref0_chroma = FRAM0_START;
    regs0->ref1_luma = FRAM1_START;
    regs0->ref1_chroma = FRAM1_START;


    //switch to game mode 256x240
    regs0->dis_pic_id = 0;
    regs0->dis_x_start = 0;
    regs0->dis_y_start = 0;
    regs0->dis_x_size = 256;
    regs0->dis_y_size = 236;

    regs0->linesize = 2;                    //RF_LINESIZE_256;


    //clear screen
    {
        char   *p;
        int     x, y;

        p = (BYTE *) (SDRAM_BASE + FRAM0_START * 1024);

        for(y = 0; y < 240; y++)
        {
            for(x = 0; x < 256; x++)
                p[y * 256 + x] = 0;
        }

    }

#endif

    regs0->gpio_master[0] &= (~(0x07 << 0));    //game GPIO 0,2

    regs0->game_mode = 5;
    for(i = 0; i < 64; i++)
    {
        regs0->mbuf_fill0 = temp0 = (i << 8) + game_color_index[3 * i];
        regs0->mbuf_fill1 = temp1 =
            (game_color_index[3 * i + 1] << 8) + game_color_index[3 * i + 2];
    }

#if CONFIG==CONFIG_COMBO_SVCD       //rbhung 2002.09.09
    switch (tv_format)
    {
        case TV_NTSC:
            regs0->dis_offset = (5 << 8) + 20;  //Y/X
            regs0->h_exp_mode = 0x100 | 0x1b;   //0x40;
            regs0->v_filter_mode = ((UINT16) (256) | (((INT16) 4) << 10));
            break;
#if CONFIG_TV_SYS==PAL_M
        case PAL_M:
#endif
        case TV_PAL:
            regs0->dis_offset = (0 << 8) + 20;  //Y/X
            regs0->h_exp_mode = 0x100 | 0x1b;   //0x40;
            regs0->v_filter_mode = ((UINT16) (218) | (((INT16) 4) << 10));
            break;
    }
#else

    switch (tv_format)
    {
        case TV_NTSC:
            regs0->dis_offset = (5 << 8) + 20;  //Y/X
            regs0->h_exp_mode = 0x100 | 0x1b;   //0x40;
            regs0->v_filter_mode = ((UINT16) (256) | (((INT16) 4) << 10));
            break;
#if CONFIG_TV_SYS==PAL_M
        case PAL_M:
#endif
        case TV_PAL:
            regs0->dis_offset = (20 << 8) + 20; //Y/X         //2003.02.24 rbhung for EDO Game
            regs0->h_exp_mode = 0x100 | 0x1b;   //0x40;
            regs0->v_filter_mode = ((UINT16) (256) | (((INT16) 4) << 10));
            break;
    }
#endif


    /*
     * config PCM hardware
     */
    // set DRAM configuration
#if CONFIG == CONFIG_COMBO_SVCD
    RF_VCD_VERSION = 1;                     // SDRAM
#elif CONFIG == CONFIG_COMBO_VCD
    RF_VCD_VERSION = 0;                     // EDO RAM
#endif

    RF_EQ_ON = 0;                                   // turn off EQ hardware
    RF_PCM_RAMP_FN = 0;                     // turn off RAMP hardware

    /*
     * DAC configuration in RF_PCM_CFG
     * b7   : 0/1,     data on positive/negative edge of BCK.
     * b6-5 : 0/1/2,   LRCK period is 32/48/64 BCK.
     * b4   : 0/1,     low indicates L/R channel.
     * b3-2 : 0/1/2/3, 16/18/20/24-bit width.
     * b1   : 0/1,     data is left/right justified.
     * b0   : 0/1,     data without/with one BCK delay.
     */
    RF_PCM_CFG = 0x32;                      // for 713

    RF_PCM_RESET = 0;                           // reset PCM related hardware
    RF_AU_RESET = 0;                            // reset AUDIO decoder related hardware
    RF_PCM_MODE = MODE_KEYSHIFT;    // set KEYSHIFT mode

    PCM_set_volume((zhx_volume/8 +1) * AUDIO_VOLUME_AMP); //ZHX 090803
    //PCM_set_volume(GAME_INITIAL_VOL * AUDIO_VOLUME_AMP); //rbhung 2002.10.07 Set Default Volume

    //KS_set_resample_step(8192);
    //KS_set_resample_step(8192/2); // set resampling step to 0.5, do upsampling by the factor of 2.
    KS_set_resample_step(8192 / 4); // set resampling step to 0.25, do upsampling by the factor of 4.
    KS_cx_set_start(-1, -1);

    /* set PCM channel address */
    while(RF_RAM2_WRT_DIS);
    AU_RAM2[R2_PCML0_ADR] = CH_START >> 3;
    while(RF_RAM2_WRT_DIS);
    AU_RAM2[R2_PCMR0_ADR] = CH_START >> 3;
    while(RF_RAM2_WRT_DIS);
    AU_RAM2[R2_PCML1_ADR] = CH_START >> 3;
    while(RF_RAM2_WRT_DIS);
    AU_RAM2[R2_PCMR1_ADR] = CH_START >> 3;
    RF_PCM_BUF_LEN = (PCM_FIFO_SIZE - 32) / 64;

    /* 0~5 maps to 44.1kHz, 48kHz, 32kHz, 22.05kHz, 24kHz, 16kHz */
    select_Fs(0);                                   // 44.1kHz Fs
    //select_Fs(3); // 22.05kHz Fs
}

void game_parameter_init(S_HARDWARE * pHard)
{
    pHard->TVMode = 0;

    if(cd_type_loaded == CDROM)
    {
      if(strcmp(file_ext_name(Gmem.gmp3.mp3_trk_now), "GUN") == 0)  //rbhung 2002.12.27 for light-gun
        pHard->bRunOption = NES_DEBUG_ON|NES_LIGHT_GUN_ON;          //NES_GAMEPAD_AB_SWAP for A/B Key Swap
      else
        pHard->bRunOption = NES_DEBUG_ON;                           //NES_BREAK_A_START for Gamepad Break Key Setup
    }
    else
      pHard->bRunOption = NES_DEBUG_ON;

    //osd
    pHard->pRegion0DataStart = 0;
    pHard->pRegion1DataStart = 0;
    pHard->unRegion0Offset = 0;
    pHard->unRegion1Offset = 0;

    //audio , 2002/2/8 09:21AM modify parameter for DSP driver
    pHard->pPCMStart = (BYTE *) (&(RF_PCM_AMP));
    pHard->pPCMEnd = 0;
    pHard->PCMLen = 0;
    pHard->unVolume = 0;
    pHard->unVolumeCurStep = zhx_volume/8+1;//GAME_INITIAL_VOL;   //ZHX 090803
    pHard->unVolumeMaxStep = 8;

    return;
}

/*
    define VFD key break id for nes driver, mapping to vfdkey.h
*/

void SetGameBreakKey(S_HARDWARE * pHard)
{

    pHard->bBreakIrKey[0] = ir_code(IRC_EJECT); //0x10;  //eject
    pHard->bBreakIrKey[1] = ir_code(IRC_STOP);  //0x14;   //stop//jhuang 2002/9/11
    pHard->bBreakIrKey[2] = ir_code(IRC_RETURN);    //0x53; //return
#ifdef POWER_KEY
    pHard->bBreakIrKey[3] = ir_code(IRC_POWER);
#else
    pHard->bBreakIrKey[3] = 0xff;
#endif
    pHard->bBreakIrKey[4] = lcd_code(IRC_EJECT);/*ZHX 061003*/
    pHard->bBreakIrKey[5] = lcd_code(IRC_STOP); /*ZHX 061003*/ 
    pHard->bBreakIrKey[6] = ir_code(IRC_VOLUME_DN); //0x2;   //volume--//jhuang 2002/9/11
    pHard->bBreakIrKey[7] = ir_code(IRC_VOLUME_UP); //0x3;   //volume++//jhuang 2002/9/11
    pHard->bBreakIrKey[8] = vfd_code(IRC_EJECT);
    pHard->bBreakIrKey[9] = vfd_code(IRC_STOP);
    pHard->bBreakIrKey[10] = vfd_code(IRC_RETURN);
    pHard->bBreakIrKey[11] = 0xff;

}

#endif