DevKit7/libctru
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use stdio and malloc

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This commit is contained in:
Dave Murphy 2014-12-26 01:11:13 +00:00
parent 0f8a756276
commit b0b125cc20
2 changed files with 22 additions and 35 deletions
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3
examples/sdmc/README.md
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@ -1,6 +1,5 @@
sdmc sdmc
======= =======
very simple example of how to access SD files with ctrulib; requires proper exheader flags for direct SDMC access. very simple example of how to access SD files with libctru;
**WARNING/TODO**: THIS EXAMPLE IS OUTDATED AND NEEDS TO BE FIXED - PLEASE DO NOT LOOK AT IT UNTIL IT IS UPDATED

52
examples/sdmc/source/main.c
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@ -3,9 +3,11 @@
/////////////////////////////////////// ///////////////////////////////////////
//this example shows you how to load a binary image file from the SD card and display it on the lower screen //this example shows you how to load a binary image file from the SD card and display it on the lower screen
//for this to work you should copy test.bin to the root of your SD card //for this to work you should copy test.bin to same folder as your .3dsx
//this file was generated with GIMP by saving a 240x320 image to raw RGB //this file was generated with GIMP by saving a 240x320 image to raw RGB
#include <string.h> #include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <3ds.h> #include <3ds.h>
#include "costable.h" #include "costable.h"
@ -42,41 +44,32 @@ void renderEffect()
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
//initialize the services we're going to be using
srvInit(); //needed for everything
aptInit(); //needed for everything
hidInit(NULL); //needed for input
gfxInit(); //makes displaying to screen easier gfxInit(); //makes displaying to screen easier
fsInit(); //needed for filesystem stuff
u64 size; FILE *file = fopen("test.bin","rb");
u32 bytesRead; if (file == NULL) goto exit;
Handle fileHandle;
//setup SDMC archive
FS_archive sdmcArchive=(FS_archive){ARCH_SDMC, (FS_path){PATH_EMPTY, 1, (u8*)""}};
//create file path struct (note : FS_makePath actually only supports PATH_CHAR, it will change in the future)
FS_path filePath=FS_makePath(PATH_CHAR, "/test.bin");
//open file // seek to end of file
Result ret=FSUSER_OpenFileDirectly(NULL, &fileHandle, sdmcArchive, filePath, FS_OPEN_READ, FS_ATTRIBUTE_NONE); fseek(file,0,SEEK_END);
//check for errors : exit if there is one
if(ret)goto exit;
//get file size // file pointer tells us the size
ret=FSFILE_GetSize(fileHandle, &size); off_t size = ftell(file);
if(ret)goto exit;
//allocate a buffer on linear heap (could just be a malloc fwiw) // seek back to start
buffer=linearAlloc(size); fseek(file,0,SEEK_SET);
//allocate a buffer
buffer=malloc(size);
if(!buffer)goto exit; if(!buffer)goto exit;
//read contents ! //read contents !
ret=FSFILE_Read(fileHandle, &bytesRead, 0x0, buffer, size); off_t bytesRead = fread(buffer,1,size,file);
if(ret || size!=bytesRead)goto exit;
//close the file because we like being nice and tidy //close the file because we like being nice and tidy
ret=FSFILE_Close(fileHandle); fclose(file);
if(ret)goto exit;
if(size!=bytesRead)goto exit;
while(aptMainLoop()) while(aptMainLoop())
{ {
@ -98,13 +91,8 @@ int main(int argc, char** argv)
//cleanup and return //cleanup and return
//returning from main() returns to hbmenu when run under ninjhax //returning from main() returns to hbmenu when run under ninjhax
exit: exit:
//closing all handles is super important
svcCloseHandle(fileHandle);
//closing all services even more so //closing all services even more so
fsExit();
gfxExit(); gfxExit();
hidExit();
aptExit();
srvExit();
return 0; return 0;
} }