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Load and save of binary audio

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Format in h/Sound
This commit is contained in:
stevenhowes
2021-04-03 23:16:46 +01:00
parent 4f861753ce
commit 7a87caa42b
9 changed files with 51 additions and 121 deletions
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!TheEsc/c/Sound
+40 -2
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@@ -21,6 +21,35 @@ void sound_on()
_kernel_swi(Sound_Enable,&inreg,&outreg);
}
void sound_composition_load(char* filename)
{
int length;
// Attempt to get file info
inreg.r[0] = 13;
inreg.r[1] = (int) filename;
_kernel_swi(OS_File,&inreg,&outreg);
// Length will be in R4 if it exists
length = outreg.r[4];
if(length > sizeof(composition))
{
screen_nobuffer();
printf("Composition exceeds %d bytes (%d bytes)",sizeof(composition),length);
exit(0);
}
// Attempt to get file info
inreg.r[0] = 16;
inreg.r[1] = (int) filename;
inreg.r[2] = (int) composition;
inreg.r[3] = 0;
_kernel_swi(OS_File,&inreg,&outreg);
}
void sound_voices(int num)
{
inreg.r[0] = num;
@@ -73,6 +102,17 @@ void sound_composition_element_add(int start, int channel, int note, int length)
composition[current_element].Length = length;
current_element++;
}
void sound_composition_save(char *filename)
{
// Attempt to get file info
inreg.r[0] = 10;
inreg.r[1] = (int) filename;
inreg.r[2] = 0xffd;
inreg.r[4] = (int) composition;
inreg.r[5] = (int) composition+(sizeof(composition[0]) * COMPOSITION_MAX);
_kernel_swi(OS_File,&inreg,&outreg);
}
void sound_composition_debug()
{
@@ -93,8 +133,6 @@ void sound_composition_debug()
);
}
}
printf("%i elements at %i bytes each\n",current_element,sizeof(composition[0]));
printf("------------------------------\n");
}