Changeset 1253:b3dc719b129f in roaraudio

Timestamp:

02/27/09 00:29:24 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

done a converter to let you use an FILE* (stdio) stream as an VIO object

Files:

• include/libroar/vio.h (modified) (1 diff)
• libroar/vio.c (modified) (2 diffs)

include/libroar/vio.h

@@ -135 +135 @@
 off_t   roar_vio_re_lseek(struct roar_vio_calls * vio, off_t offset, int whence);
 
-
+// stdio
+ssize_t roar_vio_stdio_read    (struct roar_vio_calls * vio, void *buf, size_t count);
+ssize_t roar_vio_stdio_write   (struct roar_vio_calls * vio, void *buf, size_t count);
+off_t   roar_vio_stdio_lseek   (struct roar_vio_calls * vio, off_t offset, int whence);
+int     roar_vio_stdio_sync    (struct roar_vio_calls * vio);
+int     roar_vio_stdio_close   (struct roar_vio_calls * vio);
 
 #endif

libroar/vio.c

@@ -180 +180 @@
   return -1;
 
- return -1;
+ memset(calls, 0, sizeof(struct roar_vio_calls));
+
+ calls->read  = roar_vio_stdio_read;
+ calls->write = roar_vio_stdio_write;
+ calls->lseek = roar_vio_stdio_lseek;
+ calls->sync  = roar_vio_stdio_sync;
+ calls->close = roar_vio_stdio_close;
+
+ calls->inst  = dst;
+
+ return 0;
 }
 
@@ -361 +371 @@
 }
 
+// stdio:
+ssize_t roar_vio_stdio_read    (struct roar_vio_calls * vio, void *buf, size_t count) {
+ return fread(buf, 1, count, (FILE*)(vio->inst));
+}
+
+ssize_t roar_vio_stdio_write   (struct roar_vio_calls * vio, void *buf, size_t count) {
+ return fwrite(buf, 1, count, (FILE*)(vio->inst));
+}
+
+off_t   roar_vio_stdio_lseek   (struct roar_vio_calls * vio, off_t offset, int whence) {
+ if ( fseek((FILE*)(vio->inst), offset, whence) == -1 )
+  return -1;
+
+ return ftell((FILE*)(vio->inst));
+}
+
+int     roar_vio_stdio_sync    (struct roar_vio_calls * vio) {
+ return fflush((FILE*)(vio->inst));
+}
+
+int     roar_vio_stdio_close   (struct roar_vio_calls * vio) {
+ return fclose((FILE*)(vio->inst));
+}
 
 //ll