/* 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/. */
#ifndef FFmpegRuntimeLinker_h_
#define FFmpegRuntimeLinker_h_
#include "PlatformDecoderModule.h"
#include "PlatformEncoderModule.h"
#include "mozilla/StaticMutex.h"
namespace mozilla {
class FFmpegRuntimeLinker {
public:
static bool Init() MOZ_EXCLUDES(sMutex);
static already_AddRefed<PlatformDecoderModule> CreateDecoder();
static already_AddRefed<PlatformEncoderModule> CreateEncoder();
enum LinkStatus {
LinkStatus_INIT =
0,
// Never been linked.
LinkStatus_SUCCEEDED,
// Found a usable library.
// The following error statuses are sorted from most to least preferred
// (i.e., if more than one happens, the top one is chosen.)
LinkStatus_INVALID_FFMPEG_CANDIDATE,
// Found ffmpeg with unexpected
// contents.
LinkStatus_UNUSABLE_LIBAV57,
// Found LibAV 57, which we cannot use.
LinkStatus_INVALID_LIBAV_CANDIDATE,
// Found libav with unexpected
// contents.
LinkStatus_OBSOLETE_FFMPEG,
LinkStatus_OBSOLETE_LIBAV,
LinkStatus_INVALID_CANDIDATE,
// Found some lib with unexpected contents.
LinkStatus_NOT_FOUND,
// Haven't found any library with an expected name.
};
static LinkStatus LinkStatusCode() {
StaticMutexAutoLock lock(sMutex);
return sLinkStatus;
}
static const char* LinkStatusString();
// Library name to which the sLinkStatus applies, or "" if not applicable.
static const char* LinkStatusLibraryName() {
StaticMutexAutoLock lock(sMutex);
return sLinkStatusLibraryName;
}
private:
static void PrefCallbackLogLevel(
const char* aPref,
void* aData);
static StaticMutex sMutex;
static LinkStatus sLinkStatus MOZ_GUARDED_BY(sMutex);
static const char* sLinkStatusLibraryName MOZ_GUARDED_BY(sMutex);
};
}
// namespace mozilla
#endif // FFmpegRuntimeLinker_h_
