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Annotation of previous_trunk/src/video.c, revision 1.1

1.1     ! root        1: /*
        !             2:   video.c
        !             3: 
        !             4:   This file is distributed under the GNU Public License, version 2 or at
        !             5:   your option any later version. Read the file gpl.txt for details.
        !             6: 
        !             7: */
        !             8: const char Video_fileid[] = "Previous video.c : " __DATE__ " " __TIME__;
        !             9: 
        !            10: #include <stdbool.h>
        !            11: #include <SDL_endian.h>
        !            12: 
        !            13: #include "configuration.h"
        !            14: #include "cycInt.h"
        !            15: #include "ioMem.h"
        !            16: #include "m68000.h"
        !            17: #include "screen.h"
        !            18: #include "shortcut.h"
        !            19: #include "nextMemory.h"
        !            20: #include "video.h"
        !            21: #include "dma.h"
        !            22: #include "sysReg.h"
        !            23: #include "tmc.h"
        !            24: #include "nd_sdl.hpp"
        !            25: 
        !            26: /*--------------------------------------------------------------*/
        !            27: /* Local functions prototypes                                   */
        !            28: /*--------------------------------------------------------------*/
        !            29: 
        !            30: 
        !            31: /*-----------------------------------------------------------------------*/
        !            32: /**
        !            33:  * Reset video chip
        !            34:  */
        !            35: void Video_Reset(void) {
        !            36:        Video_StartInterrupts(0);
        !            37: }
        !            38: 
        !            39: #define NEXT_VBL_FREQ 68
        !            40: 
        !            41: /**
        !            42:  * Start VBL interrupt
        !            43:  */
        !            44: void Video_StartInterrupts ( int PendingCyclesOver ) {
        !            45:     CycInt_AddRelativeInterruptUs((1000*1000)/NEXT_VBL_FREQ, 0, INTERRUPT_VIDEO_VBL);
        !            46: }
        !            47: 
        !            48: /**
        !            49:  * Generate vertical video retrace interrupt
        !            50:  */
        !            51: static void Video_InterruptHandler(void) {
        !            52:        if (ConfigureParams.System.bTurbo) {
        !            53:                tmc_video_interrupt();
        !            54:        } else if (ConfigureParams.System.bColor) {
        !            55:         color_video_interrupt();
        !            56:     } else {
        !            57:         dma_video_interrupt();
        !            58:     }
        !            59: }
        !            60: 
        !            61: 
        !            62: /*-----------------------------------------------------------------------*/
        !            63: /**
        !            64:  * VBL interrupt : set new interrupts, draw screen, generate sound,
        !            65:  * reset counters, ...
        !            66:  */
        !            67: static bool statusBarToggle;
        !            68: void Video_InterruptHandler_VBL ( void ) {
        !            69:        CycInt_AcknowledgeInterrupt();
        !            70:     host_blank(0, MAIN_DISPLAY, true);
        !            71:     if(statusBarToggle) Update_StatusBar();
        !            72:     statusBarToggle = !statusBarToggle;
        !            73:     Video_InterruptHandler();
        !            74:     CycInt_AddRelativeInterruptUs((1000*1000)/NEXT_VBL_FREQ, 0, INTERRUPT_VIDEO_VBL);
        !            75: }
        !            76: 
        !            77: 
        !            78: 
        !            79: 

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