forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
avda_codec_allocator.h
303 lines (243 loc) · 11.4 KB
/
avda_codec_allocator.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_GPU_ANDROID_AVDA_CODEC_ALLOCATOR_H_
#define MEDIA_GPU_ANDROID_AVDA_CODEC_ALLOCATOR_H_
#include <stddef.h>
#include <memory>
#include "base/android/build_info.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/optional.h"
#include "base/synchronization/waitable_event.h"
#include "base/sys_info.h"
#include "base/task_scheduler/post_task.h"
#include "base/threading/thread.h"
#include "base/time/tick_clock.h"
#include "base/trace_event/trace_event.h"
#include "media/base/android/android_overlay.h"
#include "media/base/android/media_codec_bridge_impl.h"
#include "media/base/android/media_drm_bridge_cdm_context.h"
#include "media/base/media.h"
#include "media/base/surface_manager.h"
#include "media/base/video_codecs.h"
#include "media/gpu/android/avda_surface_bundle.h"
#include "media/gpu/media_gpu_export.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gl/android/scoped_java_surface.h"
namespace media {
// For TaskRunnerFor. These are used as vector indices, so please update
// AVDACodecAllocator's constructor if you add / change them.
enum TaskType {
// Task for an autodetected MediaCodec instance.
AUTO_CODEC = 0,
// Task for a software-codec-required MediaCodec.
SW_CODEC = 1,
};
// Configuration info for MediaCodec.
// This is used to shuttle configuration info between threads without needing
// to worry about the lifetime of the AVDA instance.
class MEDIA_GPU_EXPORT CodecConfig
: public base::RefCountedThreadSafe<CodecConfig> {
public:
CodecConfig();
VideoCodec codec = kUnknownVideoCodec;
// The surface that MediaCodec is configured to output to.
scoped_refptr<AVDASurfaceBundle> surface_bundle;
// The MediaCrypto that MediaCodec is configured with for an encrypted stream.
JavaObjectPtr media_crypto;
// Whether MediaCrypto requires a secure codec.
bool requires_secure_codec = false;
// The initial coded size. The actual size might change at any time, so this
// is only a hint.
gfx::Size initial_expected_coded_size;
// Whether creating a software decoder backed MediaCodec is forbidden.
bool software_codec_forbidden = false;
// Codec specific data (SPS and PPS for H264).
std::vector<uint8_t> csd0;
std::vector<uint8_t> csd1;
// VP9 HDR metadata is only embedded in the container
// HDR10 meta data is embedded in the video stream
VideoColorSpace container_color_space;
base::Optional<HDRMetadata> hdr_metadata;
protected:
friend class base::RefCountedThreadSafe<CodecConfig>;
virtual ~CodecConfig();
private:
DISALLOW_COPY_AND_ASSIGN(CodecConfig);
};
class AVDASurfaceAllocatorClient {
public:
// Called when the requested SurfaceView becomes available after a call to
// AllocateSurface()
virtual void OnSurfaceAvailable(bool success) = 0;
// Called when the allocated surface is being destroyed. This must either
// replace the surface with MediaCodec#setSurface, or release the MediaCodec
// it's attached to. The client no longer owns the surface and doesn't
// need to call DeallocateSurface();
virtual void OnSurfaceDestroyed() = 0;
protected:
~AVDASurfaceAllocatorClient() {}
};
class AVDACodecAllocatorClient {
public:
// Called on the main thread when a new MediaCodec is configured.
// |media_codec| will be null if configuration failed.
virtual void OnCodecConfigured(
std::unique_ptr<MediaCodecBridge> media_codec,
scoped_refptr<AVDASurfaceBundle> surface_bundle) = 0;
protected:
~AVDACodecAllocatorClient() {}
};
// AVDACodecAllocator manages threads for allocating and releasing MediaCodec
// instances. These activities can hang, depending on android version, due
// to mediaserver bugs. AVDACodecAllocator detects these cases, and reports
// on them to allow software fallback if the HW path is hung up.
class MEDIA_GPU_EXPORT AVDACodecAllocator {
public:
static AVDACodecAllocator* GetInstance(
scoped_refptr<base::SequencedTaskRunner> task_runner);
using CodecFactoryCB =
base::RepeatingCallback<std::unique_ptr<MediaCodecBridge>(
VideoCodec codec,
CodecType codec_type,
const gfx::Size& size, // Output frame size.
const base::android::JavaRef<jobject>& surface,
const base::android::JavaRef<jobject>& media_crypto,
const std::vector<uint8_t>& csd0,
const std::vector<uint8_t>& csd1,
const VideoColorSpace& color_space,
const base::Optional<HDRMetadata>& hdr_metadata,
bool allow_adaptive_playback)>;
// Make sure the construction threads are started for |client|. If the
// threads fail to start, then codec allocation may fail.
virtual void StartThread(AVDACodecAllocatorClient* client);
virtual void StopThread(AVDACodecAllocatorClient* client);
// Create and configure a MediaCodec synchronously.
virtual std::unique_ptr<MediaCodecBridge> CreateMediaCodecSync(
scoped_refptr<CodecConfig> codec_config);
// Create and configure a MediaCodec asynchronously. The result is delivered
// via OnCodecConfigured().
virtual void CreateMediaCodecAsync(
base::WeakPtr<AVDACodecAllocatorClient> client,
scoped_refptr<CodecConfig> codec_config);
// Asynchronously release |media_codec| with the attached surface. We will
// drop our reference to |surface_bundle| on the main thread after the codec
// is deallocated, since the codec isn't using it anymore. We will not take
// other action on it (e.g., calling ReleaseSurfaceTexture if it has one),
// since some other codec might be going to use it. We just want to be sure
// that it outlives |media_codec|.
virtual void ReleaseMediaCodec(
std::unique_ptr<MediaCodecBridge> media_codec,
scoped_refptr<AVDASurfaceBundle> surface_bundle);
// Return true if and only if there is any AVDA registered.
bool IsAnyRegisteredAVDA();
// Return a reference to the thread for unit tests.
base::Thread& GetThreadForTesting(TaskType task_type);
// Wait for a bounded amount of time for |overlay| to be freed, if it's
// in use pending release of a codec. Returns true on success, or false if
// the wait times out.
bool WaitForPendingRelease(AndroidOverlay* overlay);
protected:
// |tick_clock| and |stop_event| are for tests only.
AVDACodecAllocator(AVDACodecAllocator::CodecFactoryCB factory_cb,
scoped_refptr<base::SequencedTaskRunner> task_runner,
base::TickClock* tick_clock = nullptr,
base::WaitableEvent* stop_event = nullptr);
virtual ~AVDACodecAllocator();
// Struct to own a codec and surface bundle, with a custom deleter to post
// destruction to the right thread.
struct MediaCodecAndSurface {
MediaCodecAndSurface(std::unique_ptr<MediaCodecBridge> media_codec,
scoped_refptr<AVDASurfaceBundle> surface_bundle);
~MediaCodecAndSurface();
std::unique_ptr<MediaCodecBridge> media_codec;
scoped_refptr<AVDASurfaceBundle> surface_bundle;
};
// Forward |media_codec|, which is configured to output to |surface_bundle|,
// to |client| if |client| is still around. Otherwise, release the codec and
// then drop our ref to |surface_bundle|. This is called on |task_runner_|.
// It may only reference |client| from |client_task_runner|.
void ForwardOrDropCodec(
scoped_refptr<base::SequencedTaskRunner> client_task_runner,
base::WeakPtr<AVDACodecAllocatorClient> client,
TaskType task_type,
scoped_refptr<AVDASurfaceBundle> surface_bundle,
std::unique_ptr<MediaCodecBridge> media_codec);
// Forward |surface_bundle| and |media_codec| to |client| on the right thread
// to access |client|.
void ForwardOrDropCodecOnClientThread(
base::WeakPtr<AVDACodecAllocatorClient> client,
std::unique_ptr<MediaCodecAndSurface> codec_and_surface);
private:
friend class AVDACodecAllocatorTest;
struct OwnerRecord {
AVDASurfaceAllocatorClient* owner = nullptr;
AVDASurfaceAllocatorClient* waiter = nullptr;
};
class HangDetector : public base::MessageLoop::TaskObserver {
public:
HangDetector(base::TickClock* tick_clock);
void WillProcessTask(const base::PendingTask& pending_task) override;
void DidProcessTask(const base::PendingTask& pending_task) override;
bool IsThreadLikelyHung();
private:
base::Lock lock_;
// Non-null when a task is currently running.
base::TimeTicks task_start_time_;
base::TickClock* tick_clock_;
DISALLOW_COPY_AND_ASSIGN(HangDetector);
};
// Handy combination of a thread and hang detector for it.
struct ThreadAndHangDetector {
ThreadAndHangDetector(const std::string& name, base::TickClock* tick_clock)
: thread(name), hang_detector(tick_clock) {}
base::Thread thread;
HangDetector hang_detector;
};
// Helper function for CreateMediaCodecAsync which takes the task runner on
// which it should post the reply to |client|.
void CreateMediaCodecAsyncInternal(
scoped_refptr<base::SequencedTaskRunner> client_task_runner,
base::WeakPtr<AVDACodecAllocatorClient> client,
scoped_refptr<CodecConfig> codec_config);
// Return the task type to use for a new codec allocation, or nullopt if
// both threads are hung.
base::Optional<TaskType> TaskTypeForAllocation(bool software_codec_forbidden);
// Return the task runner for tasks of type |type|.
scoped_refptr<base::SingleThreadTaskRunner> TaskRunnerFor(TaskType task_type);
// Called on the gpu main thread when a codec is freed on a codec thread.
// |surface_bundle| is the surface bundle that the codec was using. It's
// important to pass this through to ensure a) it outlives the codec, and b)
// it's deleted on the right thread.
void OnMediaCodecReleased(scoped_refptr<AVDASurfaceBundle> surface_bundle);
// Stop the thread indicated by |index|. This signals stop_event_for_testing_
// after both threads are stopped.
void StopThreadTask(size_t index);
// Task runner on which we do all our work. All members should be accessed
// only from this task runner. |task_runner_| itself may be referenced from
// any thread (hence const).
const scoped_refptr<base::SequencedTaskRunner> task_runner_;
// All registered AVDAs.
std::set<AVDACodecAllocatorClient*> clients_;
// Waitable events for ongoing release tasks indexed by overlay so we can
// wait on the codec release if the surface attached to it is being destroyed.
// This really is needed only for ContentVideoViewOverlay, since it requires
// synchronous releases with respect to the main thread.
std::map<AndroidOverlay*, base::WaitableEvent> pending_codec_releases_;
// Threads for each of TaskType. They are started / stopped as avda instances
// show and and request them. The vector indicies must match TaskType.
std::vector<ThreadAndHangDetector*> threads_;
base::WaitableEvent* stop_event_for_testing_;
// Saves the TaskType used to create a given codec so it can later be released
// on the same thread.
std::map<MediaCodecBridge*, TaskType> codec_task_types_;
// Low-level codec factory, for testing.
CodecFactoryCB factory_cb_;
// For canceling pending StopThreadTask()s.
base::WeakPtrFactory<AVDACodecAllocator> weak_this_factory_;
DISALLOW_COPY_AND_ASSIGN(AVDACodecAllocator);
};
} // namespace media
#endif // MEDIA_GPU_ANDROID_AVDA_CODEC_ALLOCATOR_H_