(the separate skip_frame and peek_frame functions are not being used)
void sysprof_reader_bswap_frame (SysprofReader *reader,
SysprofCaptureFrame *frame);
bool sysprof_reader_ensure_space_for (SysprofReader *reader, size_t len);
-bool sysprof_reader_skip_frame (SysprofReader *reader);
-bool sysprof_reader_peek_frame (SysprofReader *reader, SysprofCaptureFrame *frame);
+SysprofCaptureFrame *sysprof_reader_next_frame (SysprofReader *reader);
ptrdiff_t sysprof_reader_getframes (SysprofReader *reader,
int (*callback) (SysprofCaptureFrame *frame,
void *arg),