ABelliqueux/nolibgs_hello_worlds
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Add CD file loading example

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ABelliqueux 2021-07-17 13:16:05 +02:00
parent 863ba214b3
commit 1dc00c3661
8 changed files with 263 additions and 8 deletions
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13
Makefile
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@ -26,10 +26,6 @@ hello_poly_gt_tw:
$(MAKE) -C hello_poly_gt_tw
hello_poly_inline:
$(MAKE) -C hello_poly_inline
hello_poly_subdiv:
$(MAKE) -C hello_poly_subdiv
hello_rsd:
$(MAKE) -C hello_rsd
hello_sio:
$(MAKE) -C hello_sio
hello_sprt:
@ -38,6 +34,8 @@ hello_tile:
$(MAKE) -C hello_tile
hello_vag:
$(MAKE) -C hello_vag
hello_cd:
$(MAKE) -C hello_cd all
hello_cdda:
$(MAKE) -C hello_cdda
@ -55,7 +53,6 @@ clean:
$(MAKE) -C hello_poly_gt clean
$(MAKE) -C hello_poly_gt_tw clean
$(MAKE) -C hello_poly_inline clean
$(MAKE) -C hello_poly_subdiv clean
$(MAKE) -C hello_rsd clean
$(MAKE) -C hello_sio clean
$(MAKE) -C hello_sprt clean
@ -63,6 +60,7 @@ clean:
$(MAKE) -C hello_vag clean
$(MAKE) -C hello_world clean
$(MAKE) -C hello_cdda clean
$(MAKE) -C hello_cd cleansub
all:
$(MAKE) -C hello_2pads
@ -78,15 +76,14 @@ all:
$(MAKE) -C hello_poly_gt
$(MAKE) -C hello_poly_gt_tw
$(MAKE) -C hello_poly_inline
$(MAKE) -C hello_poly_subdiv
$(MAKE) -C hello_rsd
$(MAKE) -C hello_sio
$(MAKE) -C hello_sprt
$(MAKE) -C hello_tile
$(MAKE) -C hello_vag
$(MAKE) -C hello_world
$(MAKE) -C hello_cd all
$(MAKE) -C hello_cdda
# declare phony rules
.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 \
.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\
clean all

7
README.md
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@ -90,6 +90,13 @@ Alternatively, you can use `make example_name` to only build that example, i.e :
If you want to remove all the files generated by the compilation process, type `make clean`.
## Upcoming examples
* hello_xa (audio)
* hello_str (video)
* hello_poly_subdiv (polygon subdivision)
* hello_rsd (rsd format)
# Links and Doc
* [Getting started with PSX dev](https://psx.arthus.net/starting.html)

2
hello_cd/HELO.DAT Normal file
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@ -0,0 +1,2 @@
hello cd ! This is the content of the
HELO.DAT file.

12
hello_cd/Makefile Normal file
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@ -0,0 +1,12 @@
.PHONY: all cleansub
all:
mkpsxiso -y ./isoconfig.xml
cleansub:
$(MAKE) clean
rm -f hello_cd.cue hello_cd.bin
TARGET = hello_cd
SRCS = hello_cd.c \
include ../common.mk

15
hello_cd/README.md Normal file
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@ -0,0 +1,15 @@
## Loading a file from CD
You need [mkpsxiso](https://github.com/Lameguy64/mkpsxiso) in your $PATH to generate a PSX disk image.
### Compile
```bash
make all
```
### Clean directory
```bash
make cleansub
```

118
hello_cd/hello_cd.c Normal file
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@ -0,0 +1,118 @@
// Load files from CD and execute them
// Schnappy 07-2021
// based on Lameguy64's tutorial : http://lameguy64.net/svn/pstutorials/chapter1/1-display.html
#include <sys/types.h>
#include <stdio.h>
#include <libgte.h>
#include <libetc.h>
#include <libgpu.h>
#include <libapi.h>
// CD library
#include <libcd.h>
#include <malloc.h>
#define VMODE 0 // Video Mode : 0 : NTSC, 1: PAL
#define SCREENXRES 320 // Screen width
#define SCREENYRES 240 + (VMODE << 4) // Screen height : If VMODE is 0 = 240, if VMODE is 1 = 256
#define CENTERX SCREENXRES/2 // Center of screen on x
#define CENTERY SCREENYRES/2 // Center of screen on y
#define MARGINX 0 // margins for text display
#define MARGINY 32
#define FONTSIZE 8 * 7 // Text Field Height
DISPENV disp[2]; // Double buffered DISPENV and DRAWENV
DRAWENV draw[2];
short db = 0; // index of which buffer is used, values 0, 1
// CD specifics
#define CD_SECTOR_SIZE 2048
// Converting bytes to sectors SECTOR_SIZE is defined in words, aka int
#define BtoS(len) ( ( len + CD_SECTOR_SIZE - 1 ) / CD_SECTOR_SIZE )
// Name of file to load
static char * exeFile;
// libcd's CD file structure contains size, location and filename
CdlFILE filePos = {0};
//~ struct EXEC * exeStruct;
// Define start address of allocated memory
// Let's use an array so we don't have to worry about using a memory segment that's already in use.
static unsigned char ramAddr[0x40000]; // https://discord.com/channels/642647820683444236/663664210525290507/864936962199781387
// We could also set a memory address manually, but we have to make sure this won't get in the way of other routines.
// void * ramAddr = (void *)0x80030D40;
// Load data to this buffer
u_long * dataBuffer;
// Those are not strictly needed, but we'll use them to see the commands results.
// They could be replaced by a 0 in the various functions they're used with.
u_char CtrlResult[8];
// Value returned by CDread() - 1 is good, 0 is bad
int CDreadOK = 0;
// Value returned by CDsync() - Returns remaining sectors to load. 0 is good.
int CDreadResult = 0;
void init(void)
{
ResetGraph(0); // Initialize drawing engine with a complete reset (0)
SetDefDispEnv(&disp[0], 0, 0 , SCREENXRES, SCREENYRES); // Set display area for both &disp[0] and &disp[1]
SetDefDispEnv(&disp[1], 0, SCREENYRES, SCREENXRES, SCREENYRES); // &disp[0] is on top of &disp[1]
SetDefDrawEnv(&draw[0], 0, SCREENYRES, SCREENXRES, SCREENYRES); // Set draw for both &draw[0] and &draw[1]
SetDefDrawEnv(&draw[1], 0, 0 , SCREENXRES, SCREENYRES); // &draw[0] is below &draw[1]
// Set video mode
if (VMODE){ SetVideoMode(MODE_PAL);}
SetDispMask(1); // Display on screen
setRGB0(&draw[0], 255, 50, 50); // set color for first draw area
setRGB0(&draw[1], 255, 50, 50); // set color for second draw area
draw[0].isbg = 1; // set mask for draw areas. 1 means repainting the area with the RGB color each frame
draw[1].isbg = 1;
PutDispEnv(&disp[db]); // set the disp and draw environnments
PutDrawEnv(&draw[db]);
FntLoad(960, 0); // Load font to vram at 960,0(+128)
FntOpen(MARGINX, SCREENYRES - MARGINY - FONTSIZE, SCREENXRES - MARGINX * 2, FONTSIZE, 0, 280 ); // FntOpen(x, y, width, height, black_bg, max. nbr. chars
}
void display(void)
{
DrawSync(0); // Wait for all drawing to terminate
VSync(0); // Wait for the next vertical blank
PutDispEnv(&disp[db]); // set alternate disp and draw environnments
PutDrawEnv(&draw[db]);
db = !db; // flip db value (0 or 1)
}
int main(void)
{
// Init display
init();
// Init CD system
CdInit();
// Init heap
InitHeap((u_long *)ramAddr, sizeof(ramAddr));
// If the other method was chosen at l.39
// InitHeap((void *)0x80030D40, 0x40000);
// Set name of file to load
exeFile = "\\HELO.DAT;1";
// Get file position from filename
CdSearchFile( &filePos, exeFile);
// Allocate memory
dataBuffer = malloc( BtoS(filePos.size) * CD_SECTOR_SIZE );
// Issue CdlSetloc CDROM command : Set the seek target position
// Beware of a misnomed 'sector' member in the CdlLOC struct that should really be named 'frame'.
// https://discord.com/channels/642647820683444236/663664210525290507/864912470996942910
CdControl(CdlSetloc, (u_char *)&filePos.pos, CtrlResult);
// Read data and load it to dataBuffer
CDreadOK = CdRead( (int)BtoS(filePos.size), (u_long *)dataBuffer, CdlModeSpeed );
// Wait for operation to complete
CDreadResult = CdReadSync(0, 0);
while (1) // infinite loop
{
// Print the content of the loaded file - See HELO.DAT
FntPrint("%s%d\n", (char *)dataBuffer, VSync(-1));
// Print heap and buffer addresses
FntPrint("Heap: %x - Buf: %x\n", ramAddr, dataBuffer);
// Print returned values
FntPrint("CdCtrl: %d\nRead : %d %d\n", CtrlResult[0], CDreadOK, CDreadResult);
// Print filesize in bytes/sectors
FntPrint("Size: %dB sectors: %d", filePos.size, BtoS(filePos.size));
FntFlush(-1); // Draw print stream
display(); // Execute display()
}
return 0;
}

100
hello_cd/isoconfig.xml Normal file
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@ -0,0 +1,100 @@
<?xml version="1.0" encoding="UTF-8"?>
<!-- MKPSXISO example XML script -->
<!-- <iso_project>
Starts an ISO image project to build. Multiple <iso_project> elements may be
specified within the same xml script which useful for multi-disc projects.
<iso_project> elements must contain at least one <track> element.
Attributes:
image_name - File name of the ISO image file to generate.
cue_sheet - Optional, file name of the cue sheet for the image file
(required if more than one track is specified).
-->
<iso_project image_name="hello_cd.bin" cue_sheet="hello_cd.cue">
<!-- <track>
Specifies a track to the ISO project. This example element creates a data
track for storing data files and CD-XA/STR streams.
Only one data track is allowed and data tracks must only be specified as the
first track in the ISO image and cannot be specified after an audio track.
Attributes:
type - Track type (either data or audio).
source - For audio tracks only, specifies the file name of a wav audio
file to use for the audio track.
-->
<track type="data">
<!-- <identifiers>
Optional, Specifies the identifier strings to use for the data track.
Attributes:
system - Optional, specifies the system identifier (PLAYSTATION if unspecified).
application - Optional, specifies the application identifier (PLAYSTATION if unspecified).
volume - Optional, specifies the volume identifier.
volume_set - Optional, specifies the volume set identifier.
publisher - Optional, specifies the publisher identifier.
data_preparer - Optional, specifies the data preparer identifier. If unspecified, MKPSXISO
will fill it with lengthy text telling that the image file was generated
using MKPSXISO.
-->
<identifiers
system ="PLAYSTATION"
application ="PLAYSTATION"
volume ="HELOCD"
volume_set ="HELOCD"
publisher ="SCHNAPPY"
data_preparer ="MKPSXISO"
/>
<!-- <license>
Optional, specifies the license file to use, the format of the license file must be in
raw 2336 byte sector format, like the ones included with the PsyQ SDK in psyq\cdgen\LCNSFILE.
License data is not included within the MKPSXISO program to avoid possible legal problems
in the open source environment... Better be safe than sorry.
Attributes:
file - Specifies the license file to inject into the ISO image.
-->
<!--
<license file="LICENSEA.DAT"/>
-->
<!-- <directory_tree>
Specifies and contains the directory structure for the data track.
Attributes:
None.
-->
<directory_tree>
<!-- <file>
Specifies a file in the directory tree.
Attributes:
name - File name to use in the directory tree (can be used for renaming).
type - Optional, type of file (data for regular files and is the default, xa for
XA audio and str for MDEC video).
source - File name of the source file.
-->
<!-- Stores system.txt as system.cnf -->
<file name="system.cnf" type="data" source="system.cnf"/>
<file name="SCES_313.37" type="data" source="hello_cd.ps-exe"/>
<file name="HELO.DAT" type="data" source="HELO.DAT"/>
<dummy sectors="1024"/>
<!-- <dir>
Specifies a directory in the directory tree. <file> and <dir> elements inside the element
will be inside the specified directory.
-->
</directory_tree>
</track>
</iso_project>

4
hello_cd/system.cnf Normal file
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@ -0,0 +1,4 @@
BOOT=cdrom:\SCES_313.37;1
TCB=4
EVENT=10
STACK=801FFFF0