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99 lines
2.3 KiB
99 lines
2.3 KiB
4 years ago
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/*
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* decode_a52.c
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*
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* Copyright (C) Thomas Oestreich - June 2001
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*
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* This file is part of transcode, a video stream processing tool
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*
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* transcode is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* transcode is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "transcode.h"
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#include "libtc/libtc.h"
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#include "tcinfo.h"
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#ifdef HAVE_DLFCN_H
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#include <dlfcn.h>
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#else
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# ifdef OS_DARWIN
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# include "libdldarwin/dlfcn.h"
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# endif
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#endif
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#include "ioaux.h"
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#include "tc.h"
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static char *mod_path=MOD_PATH;
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#define MODULE "a52_decore.so"
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// dl stuff
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static int (*p_a52_decore)(decode_t *decode);
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static void *handle;
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static char module[TC_BUF_MAX];
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static int a52_do_init(char *path) {
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const char *error;
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tc_snprintf(module, sizeof(module), "%s/%s", path, MODULE);
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if(verbose & TC_DEBUG)
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tc_log_msg(__FILE__, "loading external module %s", module);
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// try transcode's module directory
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handle = dlopen(module, RTLD_NOW);
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if (!handle) {
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//try the default:
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// handle = dlopen(MODULE, RTLD_GLOBAL| RTLD_LAZY);
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if (!handle) {
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error = dlerror();
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fputs (error, stderr);
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fputs("\n", stderr);
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return(-1);
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}
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}
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p_a52_decore = dlsym(handle, "a52_decore");
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if ((error = dlerror()) != NULL) {
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fputs(error, stderr);
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fputs("\n", stderr);
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return(-1);
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}
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return(0);
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}
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/* ------------------------------------------------------------
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*
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* decoder thread
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*
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* ------------------------------------------------------------*/
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void decode_a52(decode_t *decode)
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{
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verbose = decode->verbose;
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//load the codec
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if(a52_do_init(mod_path)<0) {
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tc_log_error(__FILE__, "failed to init ATSC A-52 stream decoder");
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import_exit(1);
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}
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(*p_a52_decore)(decode);
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dlclose(handle);
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import_exit(0);
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}
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