Hacking Help with CSND_playsound

[Rinnegatamante]

Hello,
according to this sample provided with libctru, i'm trying to add WAV support to my LUA interpreter but i'm having issues with this.

This is my actual code:

/*----------------------------------------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#------  This File is Part Of : ----------------------------------------------------------------------------------------#
#------- _  -------------------  ______  _  --------------------------------------------------------------------------#
#------ | | ------------------- (_____ \ | |  --------------------------------------------------------------------------#
#------ | | ---  _  _  ____    _____) )| |  ____  _  _  ____  ____  ----------------------------------------------#
#------ | | --- | | | | / _  |  |  ____/ | | / _  || | | | / _  ) / ___)  ----------------------------------------------#
#------ | |_____| |_| |( ( | |  | |      | |( ( | || |_| |( (/ / | |  --------------------------------------------------#
#------ |_______)\____| \_||_|  |_|      |_| \_||_| \__  | \____)|_|  --------------------------------------------------#
#------------------------------------------------- (____/  -------------------------------------------------------------#
#------------------------  ______  _  -------------------------------------------------------------------------------#
#------------------------  (_____ \ | |  -------------------------------------------------------------------------------#
#------------------------  _____) )| | _  _  ___  ------------------------------------------------------------------#
#------------------------  |  ____/ | || | | | /___)  ------------------------------------------------------------------#
#------------------------  | |      | || |_| ||___ |  ------------------------------------------------------------------#
#------------------------  |_|      |_| \____|(___/  ------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#- Licensed under the GPL License --------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#- Copyright (c) Nanni <[email protected]> ---------------------------------------------------------------------------#
#- Copyright (c) Rinnegatamante <[email protected]> -------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#- Credits : -----------------------------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------#
#- Smealum for ctrulib -------------------------------------------------------------------------------------------------#
#- Aurelio for testing & bug-fixing ------------------------------------------------------------------------------------#
#-----------------------------------------------------------------------------------------------------------------------*/
 
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <3ds.h>
#include "include/luaplayer.h"
 
struct wav{
u32 samplerate;
u8* audiobuf;
u32 size;
};
 
static int lua_openwav(lua_State *L)
{
    int argc = lua_gettop(L);
    if (argc != 1) return luaL_error(L, "wrong number of arguments");
    const char *file_tbo = luaL_checkstring(L, 1);
    Handle fileHandle;
    FS_archive sdmcArchive=(FS_archive){ARCH_SDMC, (FS_path){PATH_EMPTY, 1, (u8*)""}};
    FS_path filePath=FS_makePath(PATH_CHAR, file_tbo);
    Result ret=FSUSER_OpenFileDirectly(NULL, &fileHandle, sdmcArchive, filePath, FS_OPEN_READ, FS_ATTRIBUTE_NONE);
    if(ret) return luaL_error(L, "error opening file");
    u32 samplerate,bytesRead;
    u64 size;
    FSFILE_GetSize(fileHandle, &size);
    u8* audiobuf = (u8*)(malloc(size-44));
    FSFILE_Read(fileHandle, &bytesRead, 24, &samplerate, 4);
    FSFILE_Read(fileHandle, &bytesRead, 44, audiobuf, size-44);
    wav *wav_file = (wav*)malloc(sizeof(wav));
    wav_file->audiobuf = audiobuf;
    wav_file->samplerate = samplerate;
    wav_file->size = size-44;
    lua_pushnumber(L,(u32)wav_file);
    return 1;
}
 
static int lua_soundinit(lua_State *L)
{
    int argc = lua_gettop(L);
    if (argc != 0) return luaL_error(L, "wrong number of arguments");
    CSND_initialize(NULL);
    return 0;
}
 
static int lua_playWav(lua_State *L)
{
    int argc = lua_gettop(L);
    if (argc != 1) return luaL_error(L, "wrong number of arguments");
    wav* src = (wav*)luaL_checkint(L, 1);
    GSPGPU_FlushDataCache(NULL, src->audiobuf, src->size);
    CSND_playsound(0x8, CSND_LOOP_DISABLE, CSND_ENCODING_PCM16, src->samplerate, (u32*)src->audiobuf, NULL, src->size, 2, 0);
    return 0;
}
 
static int lua_soundend(lua_State *L)
{
    int argc = lua_gettop(L);
    if (argc != 0) return luaL_error(L, "wrong number of arguments");
    CSND_shutdown();
    return 0;
}
 
//Register our Sound Functions
static const luaL_Reg Sound_functions[] = {
  {"openWav",                lua_openwav},
  {"playWav",                lua_playWav},
  {"init",                    lua_soundinit},
  {"term",                    lua_soundend},
  {0, 0}
};
 
void luaSound_init(lua_State *L) {
    lua_newtable(L);
    luaL_setfuncs(L, Sound_functions, 0);
    lua_setglobal(L, "Sound");
}

And i call it in my LUA sample with this:

white = Color.new(255,255,255)
black = Color.new(0,0,0)
oldpad = Controls.read()
Sound.init()
test = Sound.openWav("/test.wav")
while true do
Screen.waitVblankStart()
Screen.refresh()
Controls.init()
pad = Controls.read()
if (Controls.check(pad,KEY_A)) then
System.exit()
end
Sound.playWav(test)
Screen.flip()
end
Sound.term()

Which is like a thing like this in C:

struct wav{
u32 samplerate;
u8* audiobuf;
u32 position;
};
 
int main(){
srvInit();
aptInit();
gfxInit();
hidInit(NULL);
irrstInit(NULL);
fsInit();
CSND_initialize(NULL);
//CODE TO LOAD WAV, SEE lua_openwav
while(aptMainLoop()){
gspWaitForVBlank();
GSPGPU_FlushDataCache(NULL, src->audiobuf, src->position);
CSND_playsound(0x8, CSND_LOOP_DISABLE, CSND_ENCODING_PCM16, src->samplerate, (u32*)src->audiobuf, NULL, src->size, 2, 0);
gfxFlushBuffers();
gfxSwapBuffers();
}
}

When i launch my interpreter, i get no sound but the rest of the homebrew works fine. Where i am wrong?

 

[clienthax]

any chance your using the new 3ds?

 

[Rinnegatamante]

No, i'm using a fat 3DS (first model).

 

[Rinnegatamante]

Bump, someone knows where i'm wrong?