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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "OmxCoreLibLinker.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Preferences.h"
#include "MainThreadUtils.h"
#include "prlink.h"
#include "PlatformDecoderModule.h"
#ifdef LOG
# undef LOG
#endif
#define LOG(arg, ...) \
MOZ_LOG(sPDMLog, mozilla::LogLevel::Debug, \
("OmxCoreLibLinker::%s: " arg, __func__, ##__VA_ARGS__))
namespace mozilla {
OmxCoreLibLinker::LinkStatus OmxCoreLibLinker::sLinkStatus = LinkStatus_INIT;
const char* OmxCoreLibLinker::sLibNames[] = {
"libopenmaxil.so", // Raspberry Pi
"libomxr_core.so", // Renesas R-Car, RZ/G
"libomxil-bellagio.so.0", // Bellagio: An OSS implementation of OpenMAX IL
};
PRLibrary* OmxCoreLibLinker::sLinkedLib = nullptr;
const char* OmxCoreLibLinker::sLibName = nullptr;
#define OMX_FUNC(func) void (*func)();
#include "OmxFunctionList.h"
#undef OMX_FUNC
bool OmxCoreLibLinker::TryLinkingLibrary(const char* libName) {
PRLibSpec lspec;
lspec.type = PR_LibSpec_Pathname;
lspec.value.pathname = libName;
sLinkedLib = PR_LoadLibraryWithFlags(lspec, PR_LD_NOW | PR_LD_LOCAL);
if (sLinkedLib) {
if (Bind(libName)) {
sLibName = libName;
LOG("Succeeded to load %s", libName);
return true;
} else {
LOG("Failed to link %s", libName);
}
Unlink();
}
return false;
}
/* static */
bool OmxCoreLibLinker::Link() {
LOG("");
if (sLinkStatus) {
return sLinkStatus == LinkStatus_SUCCEEDED;
}
MOZ_ASSERT(NS_IsMainThread());
nsAutoCString libPath;
nsresult rv = Preferences::GetCString("media.omx.core-lib-path", libPath);
if (NS_SUCCEEDED(rv) && !libPath.IsEmpty()) {
if (TryLinkingLibrary(libPath.Data())) {
sLinkStatus = LinkStatus_SUCCEEDED;
return true;
}
}
// try known paths
for (size_t i = 0; i < ArrayLength(sLibNames); i++) {
if (TryLinkingLibrary(sLibNames[i])) {
sLinkStatus = LinkStatus_SUCCEEDED;
return true;
}
}
sLinkStatus = LinkStatus_FAILED;
return false;
}
/* static */
bool OmxCoreLibLinker::Bind(const char* aLibName) {
#define OMX_FUNC(func) \
{ \
if (!(func = (typeof(func))PR_FindSymbol(sLinkedLib, #func))) { \
LOG("Couldn't load function " #func " from %s.", aLibName); \
return false; \
} \
}
#include "OmxFunctionList.h"
#undef OMX_FUNC
return true;
}
/* static */
void OmxCoreLibLinker::Unlink() {
LOG("");
if (sLinkedLib) {
PR_UnloadLibrary(sLinkedLib);
sLinkedLib = nullptr;
sLibName = nullptr;
sLinkStatus = LinkStatus_INIT;
}
}
} // namespace mozilla
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