69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
// *****************************************************************************
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// Copyright (C) 2019 Ericsson and others.
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//
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// This program and the accompanying materials are made available under the
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// terms of the Eclipse Public License v. 2.0 which is available at
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// http://www.eclipse.org/legal/epl-2.0.
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//
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// This Source Code may also be made available under the following Secondary
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// Licenses when the conditions for such availability set forth in the Eclipse
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// Public License v. 2.0 are satisfied: GNU General Public License, version 2
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// with the GNU Classpath Exception which is available at
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// https://www.gnu.org/software/classpath/license.html.
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//
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// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
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// *****************************************************************************
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#ifndef LINUX_FFMPEG
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#define LINUX_FFMPEG
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#include <stdlib.h>
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#include <dlfcn.h>
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#include "ffmpeg.h"
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char *load_ffmpeg_library(struct FFMPEG_Library *library, char *library_path)
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{
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void *handle = dlopen(library_path, RTLD_NOW);
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char *error = dlerror();
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if (error != NULL)
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{
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goto error;
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}
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struct AVCodecDescriptor *(*avcodec_descriptor_next)(const struct AVCodecDescriptor *) = dlsym(handle, "avcodec_descriptor_next");
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error = dlerror();
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if (error != NULL)
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{
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goto error;
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}
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struct AVCodec *(*avcodec_find_decoder)(enum AVCodecID) = dlsym(handle, "avcodec_find_decoder");
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error = dlerror();
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if (error != NULL)
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{
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goto error;
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}
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library->handle = handle;
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library->avcodec_descriptor_next = avcodec_descriptor_next;
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library->avcodec_find_decoder = avcodec_find_decoder;
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return NULL;
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error:
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if (handle != NULL)
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{
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dlclose(handle);
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}
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return error;
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}
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char *unload_ffmpeg_library(struct FFMPEG_Library *library)
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{
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dlclose(library->handle);
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*library = NULL_FFMPEG_LIBRARY;
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return dlerror();
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}
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#endif // LINUX_FFMPEG guard
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