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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "media/base/media.h" | 5 #include "media/base/media.h" |
| 6 | 6 |
| 7 #include "base/files/file_path.h" | 7 #include "base/files/file_path.h" |
| 8 #include "base/lazy_instance.h" | 8 #include "base/lazy_instance.h" |
| 9 #include "base/path_service.h" | 9 #include "base/path_service.h" |
| 10 #include "base/synchronization/lock.h" | 10 #include "base/synchronization/lock.h" |
| 11 #include "build/build_config.h" | 11 #include "build/build_config.h" |
| 12 #include "media/base/yuv_convert.h" | 12 #include "media/base/yuv_convert.h" |
| 13 | 13 |
| 14 #if !defined(MEDIA_DISABLE_FFMPEG) |
| 15 #include "media/ffmpeg/ffmpeg_common.h" |
| 16 #endif |
| 17 |
| 14 namespace media { | 18 namespace media { |
| 15 | 19 |
| 16 namespace internal { | |
| 17 // Platform specific initialization method. | |
| 18 extern bool InitializeMediaLibraryInternal(const base::FilePath& module_dir); | |
| 19 } // namespace internal | |
| 20 | |
| 21 // Media must only be initialized once, so use a LazyInstance to ensure this. | 20 // Media must only be initialized once, so use a LazyInstance to ensure this. |
| 22 class MediaInitializer { | 21 class MediaInitializer { |
| 23 public: | |
| 24 bool Initialize(const base::FilePath& module_dir) { | |
| 25 base::AutoLock auto_lock(lock_); | |
| 26 if (!tried_initialize_) { | |
| 27 tried_initialize_ = true; | |
| 28 initialized_ = internal::InitializeMediaLibraryInternal(module_dir); | |
| 29 } | |
| 30 return initialized_; | |
| 31 } | |
| 32 | |
| 33 bool IsInitialized() { | |
| 34 base::AutoLock auto_lock(lock_); | |
| 35 return initialized_; | |
| 36 } | |
| 37 | |
| 38 private: | 22 private: |
| 39 friend struct base::DefaultLazyInstanceTraits<MediaInitializer>; | 23 friend struct base::DefaultLazyInstanceTraits<MediaInitializer>; |
| 40 | 24 |
| 41 MediaInitializer() | 25 MediaInitializer() { |
| 42 : initialized_(false), | |
| 43 tried_initialize_(false) { | |
| 44 // Perform initialization of libraries which require runtime CPU detection. | 26 // Perform initialization of libraries which require runtime CPU detection. |
| 45 InitializeCPUSpecificYUVConversions(); | 27 InitializeCPUSpecificYUVConversions(); |
| 28 |
| 29 #if !defined(MEDIA_DISABLE_FFMPEG) |
| 30 // Disable logging as it interferes with layout tests. |
| 31 av_log_set_level(AV_LOG_QUIET); |
| 32 |
| 33 #if defined(ALLOCATOR_SHIM) |
| 34 // Remove allocation limit from ffmpeg, so calls go down to shim layer. |
| 35 av_max_alloc(0); |
| 36 #endif // defined(ALLOCATOR_SHIM) |
| 37 |
| 38 #endif // !defined(MEDIA_DISABLE_FFMPEG) |
| 46 } | 39 } |
| 47 | 40 |
| 48 ~MediaInitializer() { | 41 ~MediaInitializer() { |
| 49 NOTREACHED() << "MediaInitializer should be leaky!"; | 42 NOTREACHED() << "MediaInitializer should be leaky!"; |
| 50 } | 43 } |
| 51 | 44 |
| 52 base::Lock lock_; | |
| 53 bool initialized_; | |
| 54 bool tried_initialize_; | |
| 55 | |
| 56 DISALLOW_COPY_AND_ASSIGN(MediaInitializer); | 45 DISALLOW_COPY_AND_ASSIGN(MediaInitializer); |
| 57 }; | 46 }; |
| 58 | 47 |
| 59 static base::LazyInstance<MediaInitializer>::Leaky g_media_library = | 48 static base::LazyInstance<MediaInitializer>::Leaky g_media_library = |
| 60 LAZY_INSTANCE_INITIALIZER; | 49 LAZY_INSTANCE_INITIALIZER; |
| 61 | 50 |
| 62 bool InitializeMediaLibrary(const base::FilePath& module_dir) { | 51 void InitializeMediaLibrary() { |
| 63 return g_media_library.Get().Initialize(module_dir); | |
| 64 } | |
| 65 | |
| 66 void InitializeMediaLibraryForTesting() { | |
| 67 base::FilePath module_dir; | |
| 68 CHECK(PathService::Get(base::DIR_EXE, &module_dir)); | |
| 69 CHECK(g_media_library.Get().Initialize(module_dir)); | |
| 70 } | |
| 71 | |
| 72 bool IsMediaLibraryInitialized() { | |
| 73 return g_media_library.Get().IsInitialized(); | |
| 74 } | |
| 75 | |
| 76 void InitializeCPUSpecificMediaFeatures() { | |
| 77 // Force initialization of the media initializer, but don't call Initialize(). | |
| 78 g_media_library.Get(); | 52 g_media_library.Get(); |
| 79 } | 53 } |
| 80 | 54 |
| 81 } // namespace media | 55 } // namespace media |
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