static int _seek_to_beginning_of_data(FILE *fp) {
DataChunk temp;
if (read_data_chunk(fp, &temp)) {
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
static int _process_chunk(QSP_ARG_DECL Image_File *ifp, Wav_Chunk_Hdr *wch_p)
{
// See what kind of chunk it is...
if( !strncmp(wch_p->wch_label,"fmt ",4) ){
fprintf(stderr,"format chunk seen!\n");
return read_format_chunk(ifp,wch_p);
} else if( !strncmp(wch_p->wch_label,"data",4) ){
fprintf(stderr,"data chunk seen!\n");
if( read_data_chunk(ifp,wch_p) != 0 )
return -1;
return 1; // special return val for data chunk
} else if( !strncmp(wch_p->wch_label,"LIST",4) ){
fprintf(stderr,"list chunk seen!\n");
return ignore_chunk(ifp,wch_p);
} else {
char s[5];
strncpy(s,wch_p->wch_label,4);
s[4]=0;
if( is_printable(s) ){
sprintf(ERROR_STRING,
"read_next_chunk_header (%s): unrecognized chunk label \"%s\"!?\n",
ifp->if_name,s);
warn(ERROR_STRING);
} else {
wav_error("unprintable chunk label",ifp);
}
// should read the chunk data!?
return 0;
}
}
int read_wav_file_header(FILE *fp, WavFileHeader *header) {
RiffChunk riff_chunk;
FmtChunk fmt_chunk;
DataChunk data_chunk;
if (read_riff_chunk(fp, &riff_chunk)) {
return EXIT_FAILURE;
}
if (read_fmt_chunk(fp, &fmt_chunk)) {
return EXIT_FAILURE;
}
if (read_data_chunk(fp, &data_chunk)) {
return EXIT_FAILURE;
}
header->r = riff_chunk;
header->f = fmt_chunk;
header->d = data_chunk;
return EXIT_SUCCESS;
}
