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/*
* decode_a52.c
*
* Copyright (C) Thomas Oestreich - June 2001
*
* This file is part of transcode, a video stream processing tool
*
* transcode 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.
*
* transcode 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "transcode.h"
#include "libtc/libtc.h"
#include "tcinfo.h"
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#else
# ifdef OS_DARWIN
# include "libdldarwin/dlfcn.h"
# endif
#endif
#include "ioaux.h"
#include "tc.h"
static char *mod_path=MOD_PATH;
#define MODULE "a52_decore.so"
// dl stuff
static int (*p_a52_decore)(decode_t *decode);
static void *handle;
static char module[TC_BUF_MAX];
static int a52_do_init(char *path) {
const char *error;
tc_snprintf(module, sizeof(module), "%s/%s", path, MODULE);
if(verbose & TC_DEBUG)
tc_log_msg(__FILE__, "loading external module %s", module);
// try transcode's module directory
handle = dlopen(module, RTLD_NOW);
if (!handle) {
//try the default:
// handle = dlopen(MODULE, RTLD_GLOBAL| RTLD_LAZY);
if (!handle) {
error = dlerror();
fputs (error, stderr);
fputs("\n", stderr);
return(-1);
}
}
p_a52_decore = dlsym(handle, "a52_decore");
if ((error = dlerror()) != NULL) {
fputs(error, stderr);
fputs("\n", stderr);
return(-1);
}
return(0);
}
/* ------------------------------------------------------------
*
* decoder thread
*
* ------------------------------------------------------------*/
void decode_a52(decode_t *decode)
{
verbose = decode->verbose;
//load the codec
if(a52_do_init(mod_path)<0) {
tc_log_error(__FILE__, "failed to init ATSC A-52 stream decoder");
import_exit(1);
}
(*p_a52_decore)(decode);
dlclose(handle);
import_exit(0);
}
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