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Heey everybody,

I'm trying to get smf files working with nitro engine 6.0. So I changed to code so that it uses textures and libnds timers (and ripped out the palib stuff) but when I fade out to black (to start the movie), it stays black. Maybe see you guys what i'm doing wrong, here is my code:

UZSmf.h

Code:

#ifdef UZ_USE_SMF

#ifndef __UZ_SMF_H_
#define __UZ_SMF_H_

#include <UZMain.h>
#include <stdio.h>
#include <gba-jpeg-decode.h>

void smfPlay(char * filename);
void smfInit();

// for loading jpg...
unsigned short screen_bitmap[49152];
NE_Material* texture;

struct VIDEO_HEADER
{
short height;
int    framecount;
int    vidoffset;
int    taboffset;
} vidhead;

char * buffer;
u32 frame_offset;
u16 frame_count;
u16 pixSize;
char* pixBuf;
u32 rawSize; // 22050/12 = 1/12 second of sound?
u32 audio_offset; //was 58
u16 sndBufPointer;
FILE* vidFile;

//int zoom=256;
//int zoom1=256;

#endif

#endif

UZSmf.c

Code:

#ifdef UZ_USE_SMF
#include <UZSmf.h>

void drawTexture()
{
NE_2DViewInit();
GFX_POLY_FORMAT = POLY_ALPHA(31) | POLY_ID(1) | NE_CULL_NONE;
NE_2DDrawTexturedQuad(0,0,256,192,1,texture);
}

void decodeSound()
{
if(vidhead.framecount >= frame_count)
{
   sndBufPointer++;
   if (sndBufPointer == 4) sndBufPointer = 0;
   audio_offset=(58+(float)1837.5*(frame_count+6)); // 1837.5 = 22050/12
   audio_offset = audio_offset >>1 <<1; // must be even number for some reason.
   fseek (vidFile , audio_offset , SEEK_SET);
   fread(&buffer[sndBufPointer * rawSize],1,rawSize,vidFile);
   timerStart(0, ClockDivider_1024, 512, decodeSound);
}
}

void decodeFrame()
{
if(vidhead.framecount >= frame_count)
{
   fseek(vidFile , frame_offset, SEEK_SET);
   fread(&pixSize,2,1,vidFile);
   memset(pixBuf,0,16000); // 98304
   fread(pixBuf, 1, pixSize, vidFile);
   frame_offset+=2+pixSize;
   memset(screen_bitmap,0,98304); // 98304
   if(!JPEG_DecompressImage((u8*)pixBuf, &screen_bitmap[256*((192-vidhead.height)/2)+0], 256, 192))
   {
      UZ_ERROR("Failed to decompres frame!");
   }
   if(!NE_MaterialTexLoad(texture, GL_RGB, 256, 192, TEXGEN_TEXCOORD, &screen_bitmap))
   {
      UZ_ERROR("Failed to load texture!");
   }
   frame_count++;
   timerStart(1, ClockDivider_1024, 85, decodeFrame);
}
}

void smfPlay(char * filename)
{
rawSize = 11500; // 22050/12 = 1/12 second of sound?
audio_offset = 0; //was 58
sndBufPointer = 0;
//frame_offset;
frame_count=0;
pixSize=0;
pixBuf = (char*) malloc(16000);
buffer = (char*) malloc(sizeof(char)*rawSize*4);
if(pixBuf==NULL)
{
   UZ_ERROR("Failed to allocate pixBuffer!");
}
if(buffer==NULL)
{
   UZ_ERROR("Failed to allocate buffer!");
}

int frm_number[250]; // 250 frame numbers for progress bar
int frm_offset[250]; // 250 locations for progress bar

FILE* vidFile;
vidFile = fopen (filename, "rb"); //rb = read
if(vidFile==NULL)
{
   char str[256];
   sprintf(str, "Failed to open smf file: %s", filename);
   UZ_ERROR(str);
}
// read the file header
fread(&vidhead.height,2,1,vidFile); // either 192 or 144
fread(&vidhead.framecount,4,1,vidFile);
fread(&vidhead.vidoffset,4,1,vidFile);
fread(&vidhead.taboffset,4,1,vidFile);
// read the progress bar data
fseek (vidFile , vidhead.taboffset , SEEK_SET);
fread(&frm_offset[0],4,250,vidFile);
fread(&frm_number[0],4,250,vidFile);

frame_offset = vidhead.vidoffset;

//Create texture
texture = NE_MaterialCreate();

//Set Timers
//timerStart(0, ClockDivider_1, 512, decodeSound);
//timerStart(1, ClockDivider_1, 85, decodeFrame);
decodeSound();
decodeFrame();

while(vidhead.framecount >= frame_count)
{
   //Draw Screens
   UZ_Process(NULL, drawTexture);
   UZ_WaitForVBL();
}

fclose(vidFile);
NE_MaterialDelete(texture);
free(pixBuf);
free(buffer);
//Disable Timer
}

void smfInit()
{

}

#endif

I didn't start on the sound decoding yet so it just skips the sound part. I was thinking about using discostew wave streamer for that or just replace the sound from smf with ogg and use tremolo for it. But it would be great if you can help me find the bug ^^. Excuse me for the mess in my code :(
_________________
Website / Blog

Let the nds be with you.

anybody, i need this fix :(

EDIT:

nvm, I found the bug but it is still extreemly choppy, does somebody know some speed ups ?
_________________
Website / Blog

Let the nds be with you.

gbadev.org forum archive

DS development > SMF format decoding problem

#169773 - hacker013 - Mon Aug 03, 2009 11:22 am

#169800 - hacker013 - Tue Aug 04, 2009 11:32 am