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/* -*- c -*-
$Id: read.swg,v 1.7 2008/04/28 17:34:17 karl Exp $
Copyright (C) 2006, 2008 Rocky Bernstein <[email protected]>
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
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* See <cdio/read.h> for more extensive documentation. */
%constant long int READ_MODE_AUDIO = CDIO_READ_MODE_AUDIO;
%constant long int READ_MODE_M1F1 = CDIO_READ_MODE_M1F1;
%constant long int READ_MODE_M1F2 = CDIO_READ_MODE_M1F2;
%constant long int READ_MODE_M2F1 = CDIO_READ_MODE_M2F1;
%constant long int READ_MODE_M2F2 = CDIO_READ_MODE_M2F2;
typedef int cdio_read_mode_t;
%inline %{
typedef long int my_ssize_t;
%}
%apply my_ssize_t *OUTPUT { my_ssize_t *pi_size };
%rename cdio_lseek lseek;
off_t cdio_lseek(const CdIo_t *p_cdio, off_t offset, int whence=SEEK_SET);
%newobject read_cd; // free malloc'd return value
char *read_cd(const CdIo_t *p_cdio, my_ssize_t i_size,
/*out*/ my_ssize_t *pi_size);
%inline %{
char *
read_cd(const CdIo_t *p_cdio, my_ssize_t i_size,
/*out*/ my_ssize_t *pi_size) {
char *p_buf = calloc(1, i_size);
*pi_size = cdio_read(p_cdio, p_buf, i_size);
return p_buf;
}
%}
typedef char * buf_t;
%typemap(out) buf_t {
/* $1 is of type buf_t */
ST(argvi) = sv_newmortal();
if (result) {
/* I don't yet know how to pick up arg4 another way.
THIS MEANS ARG4 MUST ALWAYS BE THE SIZE. */
sv_setpvn((SV*)ST(argvi++), (char *) result, arg4);
/* Don't leak memory. return value was malloc'd by libcdio. */
free(result);
} else {
sv_setsv((SV*)ST(argvi++), &PL_sv_undef);
}
}
%apply long int *OUTPUT { long int *drc };
/* NOTE: arg 4 *must* be the size of the buf for the buf_t typemap. */
buf_t read_sectors(const CdIo_t *p_cdio, lsn_t i_lsn,
cdio_read_mode_t read_mode, my_ssize_t i_size,
/*out*/ my_ssize_t *pi_size,
/*out*/ long int *drc);
%inline %{
typedef char *buf_t;
/* NOTE: arg 4 *must* be the size of the buf for the buf_t typemap. */
buf_t
read_sectors(const CdIo_t *p_cdio, lsn_t i_lsn,
cdio_read_mode_t read_mode, my_ssize_t i_size,
/*out*/ my_ssize_t *pi_size,
/*out*/ long int *drc)
{
char *p_buf;
uint32_t i_blocks;
uint16_t i_blocksize;
switch (read_mode) {
case CDIO_READ_MODE_AUDIO:
i_blocksize = CDIO_CD_FRAMESIZE_RAW;
break;
case CDIO_READ_MODE_M1F1:
i_blocksize = M2RAW_SECTOR_SIZE;
break;
case CDIO_READ_MODE_M1F2:
i_blocksize = M2RAW_SECTOR_SIZE;
break;
case CDIO_READ_MODE_M2F1:
i_blocksize = CDIO_CD_FRAMESIZE;
break;
case CDIO_READ_MODE_M2F2:
i_blocksize = M2F2_SECTOR_SIZE;
break;
default:
pi_size = NULL;
*drc = DRIVER_OP_BAD_PARAMETER;
return NULL;
}
p_buf = calloc(1, i_size);
i_blocks = i_size / i_blocksize;
*drc = cdio_read_sectors(p_cdio, p_buf, i_lsn, read_mode, i_blocks);
if (*drc < 0) {
pi_size = NULL;
return NULL;
}
*pi_size = i_size;
return p_buf;
}
%}
/* NOTE: arg 4 *must* be the size of the buf for the buf_t typemap. */
buf_t
read_data_bytes(const CdIo_t *p_cdio, lsn_t i_lsn, int16_t i_blocksize,
my_ssize_t i_size,
/*out*/ my_ssize_t *pi_size,
long int *drc);
%inline %{
/* NOTE: arg 4 *must* be the size of the buf for the buf_t typemap. */
buf_t
read_data_bytes(const CdIo_t *p_cdio, lsn_t i_lsn,
int16_t i_blocksize, my_ssize_t i_size,
/*out*/ my_ssize_t *pi_size,
/*out*/ long int *drc) {
uint32_t i_blocks = i_size / i_blocksize;
char *p_buf;
switch (i_blocksize) {
case CDIO_CD_FRAMESIZE:
case CDIO_CD_FRAMESIZE_RAW:
case M2F2_SECTOR_SIZE:
case M2RAW_SECTOR_SIZE:
break;
default:
/* Don't know about these block sizes */
pi_size = NULL;
*drc = DRIVER_OP_BAD_PARAMETER;
return NULL;
}
p_buf = calloc(1, i_size);
#if DEBUGGING
printf("p_cdio: %x, i_size: %d, lsn: %d, blocksize %d, blocks %d\n",
p_cdio, i_size, i_lsn, i_blocksize, i_blocks);
#endif
*drc = cdio_read_data_sectors (p_cdio, p_buf, i_lsn,
i_blocksize, i_blocks);
#if DEBUGGING
printf("drc: %d\n", drc);
#endif
if (*drc < 0) {
pi_size = NULL;
return NULL;
}
*pi_size = i_size;
return p_buf;
}
%}
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