xref: /third_party/libsnd/src/common.c

48 	if ((psf->header.ptr = calloc (1, INITIAL_HEADER_SIZE)) == NULL)
52 	psf->header.len = INITIAL_HEADER_SIZE ;
63 	newlen = (needed > psf->header.len) ? 2 * SF_MAX (needed, smallest) : 2 * psf->header.len ;
66 	{	psf_log_printf (psf, "Request for header allocation of %D denied.\n", newlen) ;
70 	if ((ptr = realloc (psf->header.ptr, newlen)) == NULL)
71 	{	psf_log_printf (psf, "realloc (%p, %D) failed\n", psf->header.ptr, newlen) ;
76 	/* Always zero-out new header memory to avoid un-initializer memory accesses. */
77 	if (newlen > psf->header.len)
78 		memset ((char *) ptr + psf->header.len, 0, newlen - psf->header.len) ;
80 	psf->header.ptr = ptr ;
81 	psf->header.len = newlen ;
395 **  ASCII header printf functions.
411 	maxlen = strlen ((char*) psf->header.ptr) ;
412 	start	= ((char*) psf->header.ptr) + maxlen ;
413 	maxlen	= psf->header.len - maxlen ;
422 	psf->header.indx = strlen ((char*) psf->header.ptr) ;
428 **  Binary header writing functions. Returns number of bytes written.
475 {	psf->header.ptr [psf->header.indx++] = x ;
481 {	psf->header.ptr [psf->header.indx++] = (x >> 24) ;
482 	psf->header.ptr [psf->header.indx++] = (x >> 16) ;
483 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
484 	psf->header.ptr [psf->header.indx++] = x ;
490 {	psf->header.ptr [psf->header.indx++] = x ;
491 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
492 	psf->header.ptr [psf->header.indx++] = (x >> 16) ;
493 	psf->header.ptr [psf->header.indx++] = (x >> 24) ;
503 {	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
504 	psf->header.ptr [psf->header.indx++] = x ;
509 {	psf->header.ptr [psf->header.indx++] = x ;
510 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
515 {	psf->header.ptr [psf->header.indx++] = (x >> 16) ;
516 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
517 	psf->header.ptr [psf->header.indx++] = x ;
522 {	psf->header.ptr [psf->header.indx++] = x ;
523 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
524 	psf->header.ptr [psf->header.indx++] = (x >> 16) ;
529 {	psf->header.ptr [psf->header.indx++] = (x >> 24) ;
530 	psf->header.ptr [psf->header.indx++] = (x >> 16) ;
531 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
532 	psf->header.ptr [psf->header.indx++] = x ;
537 {	psf->header.ptr [psf->header.indx++] = x ;
538 	psf->header.ptr [psf->header.indx++] = (x >> 8) ;
539 	psf->header.ptr [psf->header.indx++] = (x >> 16) ;
540 	psf->header.ptr [psf->header.indx++] = (x >> 24) ;
545 {	psf->header.ptr [psf->header.indx++] = (x >> 56) ;
546 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 48) ;
547 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 40) ;
548 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 32) ;
549 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 24) ;
550 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 16) ;
551 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 8) ;
552 	psf->header.ptr [psf->header.indx++] = (unsigned char) x ;
557 {	psf->header.ptr [psf->header.indx++] = (unsigned char) x ;
558 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 8) ;
559 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 16) ;
560 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 24) ;
561 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 32) ;
562 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 40) ;
563 	psf->header.ptr [psf->header.indx++] = (unsigned char) (x >> 48) ;
564 	psf->header.ptr [psf->header.indx++] = (x >> 56) ;
587 		if (psf->header.indx + 16 >= psf->header.len && psf_bump_header_allocation (psf, 16))
681 						float32_be_write (floatdata, psf->header.ptr + psf->header.indx) ;
683 						float32_le_write (floatdata, psf->header.ptr + psf->header.indx) ;
684 					psf->header.indx += 4 ;
691 						double64_be_write (doubledata, psf->header.ptr + psf->header.indx) ;
693 						double64_le_write (doubledata, psf->header.ptr + psf->header.indx) ;
694 					psf->header.indx += 8 ;
703 					if (psf->header.indx + 4 + (sf_count_t) size + (sf_count_t) (size & 1) > psf->header.len && psf_bump_header_allocation (psf, 4 + size + (size & 1)))
710 					memcpy (&(psf->header.ptr [psf->header.indx]), strptr, size) ;
712 					psf->header.indx += size ;
713 					psf->header.ptr [psf->header.indx - 1] = 0 ;
724 					if (psf->header.indx + 4 + (sf_count_t) size + (sf_count_t) (size & 1) > psf->header.len && psf_bump_header_allocation (psf, 4 + size + (size & 1)))
730 					memcpy (&(psf->header.ptr [psf->header.indx]), strptr, size + (size & 1)) ;
732 					psf->header.indx += size ;
744 					if (psf->header.indx + 1 + (sf_count_t) size > psf->header.len && psf_bump_header_allocation (psf, 1 + size))
748 					memcpy (&(psf->header.ptr [psf->header.indx]), strptr, size) ;
749 					psf->header.indx += size ;
757 					if (psf->header.indx + (sf_count_t) size > psf->header.len && psf_bump_header_allocation (psf, size))
760 					memcpy (&(psf->header.ptr [psf->header.indx]), bindata, size) ;
761 					psf->header.indx += size ;
768 					if (psf->header.indx + (sf_count_t) size > psf->header.len && psf_bump_header_allocation (psf, size))
773 					{	psf->header.ptr [psf->header.indx] = 0 ;
774 						psf->header.indx ++ ;
781 					memcpy (&(psf->header.ptr [psf->header.indx]), bindata, 16) ;
782 					psf->header.indx += 16 ;
789 					if (psf->header.indx + (sf_count_t) size > psf->header.len && psf_bump_header_allocation (psf, size))
792 					psf->header.indx += size ;
799 					if ((sf_count_t) size >= psf->header.len && psf_bump_header_allocation (psf, size))
802 					psf->header.indx = size ;
817 **  Binary header reading functions. Returns number of bytes read.
819 **	Format specifiers are the same as for header write function above with the following
867 	if (psf->header.indx + bytes >= psf->header.len && psf_bump_header_allocation (psf, bytes))
870 	if (psf->header.indx + bytes > psf->header.end)
871 	{	count = psf_fread (psf->header.ptr + psf->header.end, 1, bytes - (psf->header.end - psf->header.indx), psf) ;
872 		if (count != bytes - (int) (psf->header.end - psf->header.indx))
876 		psf->header.end += count ;
879 	memcpy (ptr, psf->header.ptr + psf->header.indx, bytes) ;
880 	psf->header.indx += bytes ;
890 			if (psf->header.indx + position >= psf->header.len)
892 			if (position > psf->header.len)
893 			{	/* Too much header to cache so just seek instead. */
894 				psf->header.indx = psf->header.end = 0 ;
898 			if (position > psf->header.end)
899 				psf->header.end += psf_fread (psf->header.ptr + psf->header.end, 1, position - psf->header.end, psf) ;
900 			psf->header.indx = position ;
904 			if (psf->header.indx + position >= psf->header.len)
907 			if (psf->header.indx + position < 0)
910 			if (psf->header.indx >= psf->header.len)
915 			if (psf->header.indx + position <= psf->header.end)
916 			{	psf->header.indx += position ;
920 			if (psf->header.indx + position > psf->header.len)
922 				position -= (psf->header.end - psf->header.indx) ;
923 				psf->header.indx = psf->header.end ;
941 			psf->header.end += psf_fread (psf->header.ptr + psf->header.end, 1, position - (psf->header.end - psf->header.indx), psf) ;
942 			psf->header.indx = psf->header.end ;
958 	if (psf->header.indx + bufsize >= psf->header.len && psf_bump_header_allocation (psf, bufsize))
962 	{	if (psf->header.indx < psf->header.end)
963 		{	ptr [k] = psf->header.ptr [psf->header.indx] ;
964 			psf->header.indx ++ ;
967 		{	psf->header.end += psf_fread (psf->header.ptr + psf->header.end, 1, 1, psf) ;
968 			ptr [k] = psf->header.ptr [psf->header.indx] ;
969 			psf->header.indx = psf->header.end ;
1001 		if (psf->header.indx + 16 >= psf->header.len && psf_bump_header_allocation (psf, 16))
1111 					memcpy (&(psf->header.ptr [psf->header.indx]), strptr, size) ;
1112 					psf->header.indx += size ;
1128 					if (psf->header.indx + count >= psf->header.len && psf_bump_header_allocation (psf, count))
1139 					{	psf->header.ptr [psf->header.indx] = 0 ;
1140 						psf->header.indx ++ ;
1159 					psf->header.end = psf->header.indx = 0 ;

Indexes created Thu Nov 07 10:32:03 CST 2024