Add CD file loading example
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13
Makefile
13
Makefile
@ -26,10 +26,6 @@ hello_poly_gt_tw:
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$(MAKE) -C hello_poly_gt_tw
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hello_poly_inline:
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$(MAKE) -C hello_poly_inline
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hello_poly_subdiv:
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$(MAKE) -C hello_poly_subdiv
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hello_rsd:
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$(MAKE) -C hello_rsd
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hello_sio:
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$(MAKE) -C hello_sio
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hello_sprt:
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@ -38,6 +34,8 @@ hello_tile:
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$(MAKE) -C hello_tile
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hello_vag:
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$(MAKE) -C hello_vag
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hello_cd:
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$(MAKE) -C hello_cd all
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hello_cdda:
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$(MAKE) -C hello_cdda
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@ -55,7 +53,6 @@ clean:
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$(MAKE) -C hello_poly_gt clean
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$(MAKE) -C hello_poly_gt_tw clean
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$(MAKE) -C hello_poly_inline clean
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$(MAKE) -C hello_poly_subdiv clean
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$(MAKE) -C hello_rsd clean
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$(MAKE) -C hello_sio clean
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$(MAKE) -C hello_sprt clean
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@ -63,6 +60,7 @@ clean:
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$(MAKE) -C hello_vag clean
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$(MAKE) -C hello_world clean
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$(MAKE) -C hello_cdda clean
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$(MAKE) -C hello_cd cleansub
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all:
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$(MAKE) -C hello_2pads
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@ -78,15 +76,14 @@ all:
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$(MAKE) -C hello_poly_gt
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$(MAKE) -C hello_poly_gt_tw
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$(MAKE) -C hello_poly_inline
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$(MAKE) -C hello_poly_subdiv
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$(MAKE) -C hello_rsd
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$(MAKE) -C hello_sio
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$(MAKE) -C hello_sprt
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$(MAKE) -C hello_tile
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$(MAKE) -C hello_vag
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$(MAKE) -C hello_world
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$(MAKE) -C hello_cd all
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$(MAKE) -C hello_cdda
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# declare phony rules
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.PHONY: hello_2pads hello_cube hello_cubetex hello_poly_fun hello_gte_opti hello_light hello_multivag hello_pad hello_poly hello_poly_ft hello_poly_gt hello_poly_gt_tw hello_poly_inline hello_poly_subdiv hello_rsd hello_sio hello_sprt hello_tile hello_vag hello_world hello_cdda \
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.PHONY: hello_2pads hello_cube hello_cubetex hello_poly_fun hello_gte_opti hello_light hello_multivag hello_pad hello_poly hello_poly_ft hello_poly_gt hello_poly_gt_tw hello_poly_inline hello_sio hello_sprt hello_tile hello_vag hello_world hello_cdda hello_cd\
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clean all
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@ -90,6 +90,13 @@ Alternatively, you can use `make example_name` to only build that example, i.e :
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If you want to remove all the files generated by the compilation process, type `make clean`.
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## Upcoming examples
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* hello_xa (audio)
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* hello_str (video)
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* hello_poly_subdiv (polygon subdivision)
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* hello_rsd (rsd format)
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# Links and Doc
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* [Getting started with PSX dev](https://psx.arthus.net/starting.html)
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2
hello_cd/HELO.DAT
Normal file
2
hello_cd/HELO.DAT
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@ -0,0 +1,2 @@
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hello cd ! This is the content of the
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HELO.DAT file.
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12
hello_cd/Makefile
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12
hello_cd/Makefile
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.PHONY: all cleansub
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all:
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mkpsxiso -y ./isoconfig.xml
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cleansub:
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$(MAKE) clean
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rm -f hello_cd.cue hello_cd.bin
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TARGET = hello_cd
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SRCS = hello_cd.c \
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include ../common.mk
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15
hello_cd/README.md
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15
hello_cd/README.md
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## Loading a file from CD
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You need [mkpsxiso](https://github.com/Lameguy64/mkpsxiso) in your $PATH to generate a PSX disk image.
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### Compile
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```bash
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make all
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```
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### Clean directory
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```bash
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make cleansub
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```
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118
hello_cd/hello_cd.c
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118
hello_cd/hello_cd.c
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// Load files from CD and execute them
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// Schnappy 07-2021
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// based on Lameguy64's 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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#include <libapi.h>
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// CD library
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#include <libcd.h>
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#include <malloc.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 + (VMODE << 4) // Screen height : If VMODE is 0 = 240, if VMODE is 1 = 256
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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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// CD specifics
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#define CD_SECTOR_SIZE 2048
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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 * exeFile;
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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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//~ struct EXEC * exeStruct;
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// Define start address of allocated memory
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// Let's use an array so we don't have to worry about using a memory segment that's already in use.
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static unsigned char ramAddr[0x40000]; // https://discord.com/channels/642647820683444236/663664210525290507/864936962199781387
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// We could also set a memory address manually, but we have to make sure this won't get in the way of other routines.
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// void * ramAddr = (void *)0x80030D40;
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// Load data to this buffer
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u_long * dataBuffer;
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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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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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// Set video mode
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if (VMODE){ SetVideoMode(MODE_PAL);}
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SetDispMask(1); // Display on screen
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setRGB0(&draw[0], 255, 50, 50); // set color for first draw area
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setRGB0(&draw[1], 255, 50, 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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// Init display
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init();
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// Init CD system
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CdInit();
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// Init heap
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InitHeap((u_long *)ramAddr, sizeof(ramAddr));
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// If the other method was chosen at l.39
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// InitHeap((void *)0x80030D40, 0x40000);
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// Set name of file to load
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exeFile = "\\HELO.DAT;1";
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// Get file position from filename
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CdSearchFile( &filePos, exeFile);
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// Allocate memory
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dataBuffer = malloc( BtoS(filePos.size) * CD_SECTOR_SIZE );
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// Issue CdlSetloc CDROM command : Set the seek target position
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// Beware of a misnomed 'sector' member in the CdlLOC struct that should really be named 'frame'.
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// https://discord.com/channels/642647820683444236/663664210525290507/864912470996942910
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CdControl(CdlSetloc, (u_char *)&filePos.pos, CtrlResult);
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// Read data and load it to dataBuffer
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CDreadOK = CdRead( (int)BtoS(filePos.size), (u_long *)dataBuffer, CdlModeSpeed );
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// Wait for operation to complete
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CDreadResult = CdReadSync(0, 0);
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while (1) // infinite loop
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{
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// Print the content of the loaded file - See HELO.DAT
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FntPrint("%s%d\n", (char *)dataBuffer, VSync(-1));
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// Print heap and buffer addresses
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FntPrint("Heap: %x - Buf: %x\n", ramAddr, dataBuffer);
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// Print returned values
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FntPrint("CdCtrl: %d\nRead : %d %d\n", CtrlResult[0], CDreadOK, CDreadResult);
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// Print filesize in bytes/sectors
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FntPrint("Size: %dB sectors: %d", filePos.size, BtoS(filePos.size));
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FntFlush(-1); // Draw print 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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100
hello_cd/isoconfig.xml
Normal file
100
hello_cd/isoconfig.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- MKPSXISO example XML script -->
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<!-- <iso_project>
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Starts an ISO image project to build. Multiple <iso_project> elements may be
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specified within the same xml script which useful for multi-disc projects.
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<iso_project> elements must contain at least one <track> element.
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Attributes:
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image_name - File name of the ISO image file to generate.
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cue_sheet - Optional, file name of the cue sheet for the image file
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(required if more than one track is specified).
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-->
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<iso_project image_name="hello_cd.bin" cue_sheet="hello_cd.cue">
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<!-- <track>
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Specifies a track to the ISO project. This example element creates a data
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track for storing data files and CD-XA/STR streams.
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Only one data track is allowed and data tracks must only be specified as the
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first track in the ISO image and cannot be specified after an audio track.
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Attributes:
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type - Track type (either data or audio).
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source - For audio tracks only, specifies the file name of a wav audio
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file to use for the audio track.
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-->
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<track type="data">
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<!-- <identifiers>
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Optional, Specifies the identifier strings to use for the data track.
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Attributes:
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system - Optional, specifies the system identifier (PLAYSTATION if unspecified).
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application - Optional, specifies the application identifier (PLAYSTATION if unspecified).
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volume - Optional, specifies the volume identifier.
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volume_set - Optional, specifies the volume set identifier.
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publisher - Optional, specifies the publisher identifier.
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data_preparer - Optional, specifies the data preparer identifier. If unspecified, MKPSXISO
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will fill it with lengthy text telling that the image file was generated
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using MKPSXISO.
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-->
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<identifiers
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system ="PLAYSTATION"
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application ="PLAYSTATION"
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volume ="HELOCD"
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volume_set ="HELOCD"
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publisher ="SCHNAPPY"
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data_preparer ="MKPSXISO"
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/>
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<!-- <license>
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Optional, specifies the license file to use, the format of the license file must be in
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raw 2336 byte sector format, like the ones included with the PsyQ SDK in psyq\cdgen\LCNSFILE.
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License data is not included within the MKPSXISO program to avoid possible legal problems
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in the open source environment... Better be safe than sorry.
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Attributes:
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file - Specifies the license file to inject into the ISO image.
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-->
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<!--
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<license file="LICENSEA.DAT"/>
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-->
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<!-- <directory_tree>
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Specifies and contains the directory structure for the data track.
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Attributes:
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None.
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-->
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<directory_tree>
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<!-- <file>
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Specifies a file in the directory tree.
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Attributes:
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name - File name to use in the directory tree (can be used for renaming).
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type - Optional, type of file (data for regular files and is the default, xa for
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XA audio and str for MDEC video).
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source - File name of the source file.
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-->
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<!-- Stores system.txt as system.cnf -->
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<file name="system.cnf" type="data" source="system.cnf"/>
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<file name="SCES_313.37" type="data" source="hello_cd.ps-exe"/>
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<file name="HELO.DAT" type="data" source="HELO.DAT"/>
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<dummy sectors="1024"/>
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<!-- <dir>
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Specifies a directory in the directory tree. <file> and <dir> elements inside the element
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will be inside the specified directory.
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-->
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</directory_tree>
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</track>
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</iso_project>
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4
hello_cd/system.cnf
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4
hello_cd/system.cnf
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BOOT=cdrom:\SCES_313.37;1
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TCB=4
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EVENT=10
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STACK=801FFFF0
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