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/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.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
* the Free Software Foundation; either version 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pjmedia-videodev/errno.h>
#include <pj/string.h>
#include <pj/unicode.h>
/* PJMEDIA-videodev's own error codes/messages
* MUST KEEP THIS ARRAY SORTED!!
* Message must be limited to 64 chars!
*/
#if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)
#if defined(PJ_HAS_ERROR_STRING) && (PJ_HAS_ERROR_STRING != 0)
static const struct
{
int code;
const char *msg;
} err_str[] =
{
PJ_BUILD_ERR( PJMEDIA_EVID_ERR, "Unspecified video device error" ),
PJ_BUILD_ERR( PJMEDIA_EVID_SYSERR, "Unknown error from video driver" ),
PJ_BUILD_ERR( PJMEDIA_EVID_INIT, "video subsystem not initialized" ),
PJ_BUILD_ERR( PJMEDIA_EVID_INVDEV, "Invalid video device" ),
PJ_BUILD_ERR( PJMEDIA_EVID_NODEV, "Found no video devices" ),
PJ_BUILD_ERR( PJMEDIA_EVID_NODEFDEV, "Unable to find default video device" ),
PJ_BUILD_ERR( PJMEDIA_EVID_NOTREADY, "video device not ready" ),
PJ_BUILD_ERR( PJMEDIA_EVID_INVCAP, "Invalid or unsupported video capability" ),
PJ_BUILD_ERR( PJMEDIA_EVID_INVOP, "Invalid or unsupported video device operation" ),
PJ_BUILD_ERR( PJMEDIA_EVID_BADFORMAT, "Bad or invalid video device format" ),
PJ_BUILD_ERR( PJMEDIA_EVID_SAMPFORMAT, "Invalid video device sample format"),
PJ_BUILD_ERR( PJMEDIA_EVID_BADLATENCY, "Bad video latency setting")
};
#endif /* PJ_HAS_ERROR_STRING */
/*
* pjmedia_videodev_strerror()
*/
PJ_DEF(pj_str_t) pjmedia_videodev_strerror(pj_status_t statcode,
char *buf, pj_size_t bufsize )
{
pj_str_t errstr;
#if defined(PJ_HAS_ERROR_STRING) && (PJ_HAS_ERROR_STRING != 0)
/* videodev error */
if (statcode >= PJMEDIA_VIDEODEV_ERRNO_START &&
statcode < PJMEDIA_VIDEODEV_ERRNO_END)
{
/* Find the error in the table.
* Use binary search!
*/
int first = 0;
int n = PJ_ARRAY_SIZE(err_str);
while (n > 0) {
int half = n/2;
int mid = first + half;
if (err_str[mid].code < statcode) {
first = mid+1;
n -= (half+1);
} else if (err_str[mid].code > statcode) {
n = half;
} else {
first = mid;
break;
}
}
if (PJ_ARRAY_SIZE(err_str) && err_str[first].code == statcode) {
pj_str_t msg;
msg.ptr = (char*)err_str[first].msg;
msg.slen = pj_ansi_strlen(err_str[first].msg);
errstr.ptr = buf;
pj_strncpy_with_null(&errstr, &msg, bufsize);
return errstr;
}
}
#endif /* PJ_HAS_ERROR_STRING */
/* Error not found. */
errstr.ptr = buf;
errstr.slen = pj_ansi_snprintf(buf, bufsize,
"Unknown pjmedia-videodev error %d",
statcode);
if (errstr.slen < 1 || errstr.slen >= (pj_ssize_t)bufsize)
errstr.slen = bufsize - 1;
return errstr;
}
#endif /* PJMEDIA_HAS_VIDEO */
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