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/*
* Copyright (C) 2015 Jean-Luc Barriere
*
* 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, 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; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "debug.h"
#include <cstdlib>
#include <cstdarg>
#include <cstdio>
#include <cstring>
#include <ctype.h>
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
typedef struct
{
const char* name;
int cur_level;
void (*msg_callback)(int level, char* msg);
} debug_ctx_t;
static debug_ctx_t debug_ctx = {"TSDemux", DEMUX_DBG_NONE, NULL};
/**
* Set the debug level to be used for the subsystem
* \param ctx the subsystem debug context to use
* \param level the debug level for the subsystem
* \return an integer subsystem id used for future interaction
*/
static inline void __dbg_setlevel(debug_ctx_t* ctx, int level)
{
if (ctx != NULL)
{
ctx->cur_level = level;
}
}
/**
* Generate a debug message at a given debug level
* \param ctx the subsystem debug context to use
* \param level the debug level of the debug message
* \param fmt a printf style format string for the message
* \param ... arguments to the format
*/
static inline void __dbg(debug_ctx_t* ctx, int level, const char* fmt, va_list ap)
{
if (ctx != NULL && level <= ctx->cur_level)
{
char msg[4096];
int len = snprintf(msg, sizeof (msg), "(%s)", ctx->name);
vsnprintf(msg + len, sizeof (msg) - len, fmt, ap);
if (ctx->msg_callback)
{
ctx->msg_callback(level, msg);
}
else
{
fwrite(msg, strlen(msg), 1, stderr);
}
}
}
void TSDemux::DBGLevel(int l)
{
__dbg_setlevel(&debug_ctx, l);
}
void TSDemux::DBGAll()
{
__dbg_setlevel(&debug_ctx, DEMUX_DBG_ALL);
}
void TSDemux::DBGNone()
{
__dbg_setlevel(&debug_ctx, DEMUX_DBG_NONE);
}
void TSDemux::DBG(int level, const char* fmt, ...)
{
va_list ap;
va_start(ap, fmt);
__dbg(&debug_ctx, level, fmt, ap);
va_end(ap);
}
void TSDemux::SetDBGMsgCallback(void (*msgcb)(int level, char*))
{
debug_ctx.msg_callback = msgcb;
}
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