128 lines
5.0 KiB
C
128 lines
5.0 KiB
C
// This is stolen from Lameguy64 tutorial : http://lameguy64.net/svn/pstutorials/chapter1/1-display.html
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#include <sys/types.h>
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#include <stdio.h>
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#include <libgte.h>
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#include <libetc.h>
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#include <libgpu.h>
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// CD library
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#include <libcd.h>
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// SPU library
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#include <libspu.h>
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#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
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#define SCREENXRES 320 // Screen width
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#define SCREENYRES 240 // Screen height
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#define CENTERX SCREENXRES/2 // Center of screen on x
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#define CENTERY SCREENYRES/2 // Center of screen on y
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#define MARGINX 0 // margins for text display
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#define MARGINY 32
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#define FONTSIZE 8 * 7 // Text Field Height
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DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
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DRAWENV draw[2];
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short db = 0; // index of which buffer is used, values 0, 1
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SpuCommonAttr spuSettings;
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// CD specifics
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#define CD_SECTOR_SIZE 2048
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#define RING_SIZE 32
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// Converting bytes to sectors SECTOR_SIZE is defined in words, aka int
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#define BtoS(len) ( ( len + CD_SECTOR_SIZE - 1 ) / CD_SECTOR_SIZE )
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// Name of file to load
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static char * loadFile;
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// libcd's CD file structure contains size, location and filename
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CdlFILE filePos = {0};
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// Load data to this buffer - Use an array to reserve memory
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u_long cdDataBuffer[RING_SIZE * CD_SECTOR_SIZE];
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// Those are not strictly needed, but we'll use them to see the commands results.
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// They could be replaced by a 0 in the various functions they're used with.
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u_char CtrlResult[8];
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// Value returned by CDread() - 1 is good, 0 is bad
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int CDreadOK = 0;
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// Value returned by CDsync() - Returns remaining sectors to load. 0 is good.
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int CDreadResult = 0;
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// XA playback
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// Number of frame in video file - 1
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u_int strFrameCnt = 893;
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// Flag set when playback has reached end of file
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u_int strEndReached = 0;
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void init(void)
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{
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ResetGraph(0); // Initialize drawing engine with a complete reset (0)
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SetDefDispEnv(&disp[0], 0, 0 , SCREENXRES, SCREENYRES); // Set display area for both &disp[0] and &disp[1]
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SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES); // &disp[0] is on top of &disp[1]
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SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES); // Set draw for both &draw[0] and &draw[1]
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SetDefDrawEnv(&draw[1], 0, 0 , SCREENXRES, SCREENYRES); // &draw[0] is below &draw[1]
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if (VMODE) // PAL
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{
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SetVideoMode(MODE_PAL);
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disp[0].screen.y += 8; // add offset : 240 + 8 + 8 = 256
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disp[1].screen.y += 8;
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}
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SetDispMask(1); // Display on screen
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setRGB0(&draw[0], 150, 200, 50); // set color for first draw area
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setRGB0(&draw[1], 150, 200, 50); // set color for second draw area
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draw[0].isbg = 1; // set mask for draw areas. 1 means repainting the area with the RGB color each frame
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draw[1].isbg = 1;
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PutDispEnv(&disp[db]); // set the disp and draw environnments
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PutDrawEnv(&draw[db]);
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FntLoad(960, 0); // Load font to vram at 960,0(+128)
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FntOpen(MARGINX, SCREENYRES - MARGINY - FONTSIZE, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 280 ); // FntOpen(x, y, width, height, black_bg, max. nbr. chars
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}
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void display(void)
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{
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DrawSync(0); // Wait for all drawing to terminate
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VSync(0); // Wait for the next vertical blank
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PutDispEnv(&disp[db]); // set alternate disp and draw environnments
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PutDrawEnv(&draw[db]);
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db = !db; // flip db value (0 or 1)
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}
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int main(void)
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{
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u_char cdSpeed = {CdlModeSpeed};
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// Init display
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init();
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// SPU setup
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// Init Spu
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SpuInit();
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// Set master & CD volume to max
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spuSettings.mask = (SPU_COMMON_MVOLL | SPU_COMMON_MVOLR | SPU_COMMON_CDVOLL | SPU_COMMON_CDVOLR | SPU_COMMON_CDMIX);
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spuSettings.mvol.left = 0x6000;
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spuSettings.mvol.right = 0x6000;
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spuSettings.cd.volume.left = 0x6000;
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spuSettings.cd.volume.right = 0x6000;
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// Enable CD input ON
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spuSettings.cd.mix = SPU_ON;
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// Apply settings
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SpuSetCommonAttr(&spuSettings);
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// Set transfer mode
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SpuSetTransferMode(SPU_TRANSFER_BY_DMA);
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// Init CD system
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CdInit();
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// Streaming
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// Init CD ring buffer
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StSetRing(cdDataBuffer, RING_SIZE);
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// Set name of file to load
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loadFile = "\\COPY.STR;1";
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// Get file position from filename
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CdSearchFile( &filePos, loadFile);
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// Issue CdlSetloc CDROM command : Set the seek target position
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CdControl(CdlSetloc, (u_char *)&filePos.pos, 0);
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// Set streaming parameters
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StSetStream(0, 200, 0xffffffff, 0, 0);
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// Set CD parameters
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CdControl(CdlSetmode, &cdSpeed, 0);
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CdSync(0,0);
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// Start streaming
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CdRead2(CdlModeStream|CdlModeSpeed|CdlModeRT);
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while (1) // infinite loop
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{
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FntPrint("Hello XA streaming !"); // Send string to print stream
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FntFlush(-1); // Draw printe stream
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display(); // Execute display()
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}
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return 0;
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}
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