mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
86 lines
2.1 KiB
C++
86 lines
2.1 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <dlfcn.h>
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#include "nsDebug.h"
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#include "FFmpegRuntimeLinker.h"
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// For FFMPEG_LOG
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#include "FFmpegDecoderModule.h"
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#define NUM_ELEMENTS(X) (sizeof(X) / sizeof((X)[0]))
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#define LIBAVCODEC 0
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#define LIBAVFORMAT 1
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#define LIBAVUTIL 2
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namespace mozilla
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{
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FFmpegRuntimeLinker::LinkStatus FFmpegRuntimeLinker::sLinkStatus =
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LinkStatus_INIT;
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static const char * const sLibNames[] = {
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"libavcodec.so.53", "libavformat.so.53", "libavutil.so.51",
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};
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void* FFmpegRuntimeLinker::sLinkedLibs[NUM_ELEMENTS(sLibNames)] = {
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nullptr, nullptr, nullptr
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};
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#define AV_FUNC(lib, func) typeof(func) func;
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#include "FFmpegFunctionList.h"
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#undef AV_FUNC
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/* static */ bool
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FFmpegRuntimeLinker::Link()
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{
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if (sLinkStatus) {
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return sLinkStatus == LinkStatus_SUCCEEDED;
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}
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for (uint32_t i = 0; i < NUM_ELEMENTS(sLinkedLibs); i++) {
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if (!(sLinkedLibs[i] = dlopen(sLibNames[i], RTLD_NOW | RTLD_LOCAL))) {
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NS_WARNING("Couldn't link ffmpeg libraries.");
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goto fail;
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}
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}
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#define AV_FUNC(lib, func) \
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func = (typeof(func))dlsym(sLinkedLibs[lib], #func); \
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if (!func) { \
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NS_WARNING("Couldn't load FFmpeg function " #func "."); \
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goto fail; \
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}
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#include "FFmpegFunctionList.h"
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#undef AV_FUNC
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sLinkStatus = LinkStatus_SUCCEEDED;
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return true;
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fail:
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Unlink();
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sLinkStatus = LinkStatus_FAILED;
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return false;
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}
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/* static */ void
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FFmpegRuntimeLinker::Unlink()
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{
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FFMPEG_LOG("Unlinking ffmpeg libraries.");
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for (uint32_t i = 0; i < NUM_ELEMENTS(sLinkedLibs); i++) {
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if (sLinkedLibs[i]) {
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dlclose(sLinkedLibs[i]);
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sLinkedLibs[i] = nullptr;
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}
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}
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}
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} // namespace mozilla
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