Use exception handling. Set some default parameters like number of blocks=1.

This commit is contained in:
rocky
2006-01-18 21:31:37 +00:00
parent 83cde259ec
commit 03b6269ee1
2 changed files with 77 additions and 82 deletions

View File

@@ -1,7 +1,7 @@
/* -*- C++ -*-
$Id: read.hpp,v 1.1 2005/11/10 11:11:16 rocky Exp $
$Id: read.hpp,v 1.2 2006/01/18 21:31:37 rocky Exp $
Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
Copyright (C) 2005, 2006 Rocky Bernstein <rocky@panix.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -62,9 +62,7 @@ ssize_t read(void *p_buf, size_t i_size)
@param read_mode the kind of "mode" to use in reading.
@param i_lsn sector to read
@param i_blocks number of sectors to read
@return DRIVER_OP_SUCCESS (0) if no error, other (negative) enumerations
are returned on error.
If read_mode is CDIO_MODE_AUDIO,
*p_buf should hold at least CDIO_FRAMESIZE_RAW * i_blocks bytes.
@@ -81,25 +79,17 @@ ssize_t read(void *p_buf, size_t i_size)
If read_mode is CDIO_MODE_M2F2,
*p_buf should hold at least CDIO_CD_FRAMESIZE * i_blocks bytes.
A DriverOpException is raised on error.
*/
driver_return_code_t readSectors(void *p_buf, lsn_t i_lsn,
cdio_read_mode_t read_mode, uint32_t i_blocks)
void readSectors(void *p_buf, lsn_t i_lsn, cdio_read_mode_t read_mode,
uint32_t i_blocks=1)
{
return cdio_read_sectors(p_cdio, p_buf, i_lsn, read_mode, i_blocks);
driver_return_code_t drc = cdio_read_sectors(p_cdio, p_buf, i_lsn, read_mode,
i_blocks);
possible_throw_device_exception(drc);
}
/** The special case of reading a single block is a common one so we
provide a routine for that as a convenience.
*/
driver_return_code_t readSector(void *p_buf, lsn_t i_lsn,
cdio_read_mode_t read_mode)
{
return cdio_read_sectors(p_cdio, p_buf, i_lsn, read_mode, 1);
}
/*!
Reads a number of data sectors (AKA blocks).
@@ -119,40 +109,14 @@ driver_return_code_t readSector(void *p_buf, lsn_t i_lsn,
@param i_blocks number of sectors to read
@return DRIVER_OP_SUCCESS (0) if no error, other (negative) enumerations
are returned on error.
A DriverOpException is raised on error.
*/
driver_return_code_t readDataBlocks(void *p_buf, lsn_t i_lsn,
uint16_t i_blocksize, uint32_t i_blocks)
void readDataBlocks(void *p_buf, lsn_t i_lsn, uint16_t i_blocksize,
uint32_t i_blocks=1)
{
return cdio_read_data_sectors (p_cdio, p_buf, i_lsn, i_blocksize, i_blocks);
}
/** The special case of reading a single block is a common one so we
provide a routine for that as a convenience.
@param p_buf place to read data into. The caller should make sure
this location is large enough. See below for size information.
*p_buf should hold at least i_blocks times either ISO_BLOCKSIZE,
M1RAW_SECTOR_SIZE or M2F2_SECTOR_SIZE depending on the kind of
sector getting read. If you don't know whether you have a Mode 1/2,
Form 1/ Form 2/Formless sector best to reserve space for the maximum
which is M2RAW_SECTOR_SIZE.
@param i_lsn sector to read
@param i_blocksize size of block. Should be either CDIO_CD_FRAMESIZE,
M2RAW_SECTOR_SIZE, or M2F2_SECTOR_SIZE. See comment above under p_buf.
@return DRIVER_OP_SUCCESS (0) if no error, other (negative) enumerations
are returned on error.
*/
driver_return_code_t readDataBlock(void *p_buf, lsn_t i_lsn,
uint16_t i_blocksize)
{
return readDataBlocks(p_buf, i_lsn, i_blocksize, 1);
driver_return_code_t drc = cdio_read_data_sectors (p_cdio, p_buf, i_lsn,
i_blocksize, i_blocks);
possible_throw_device_exception(drc);
}