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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 "base/logging.h" | 5 #include "base/logging.h" |
6 #include "services/media/framework_mojo/mojo_pull_mode_producer.h" | 6 #include "services/media/framework_mojo/mojo_pull_mode_producer.h" |
7 | 7 |
8 namespace mojo { | 8 namespace mojo { |
9 namespace media { | 9 namespace media { |
10 | 10 |
11 MojoPullModeProducer::MojoPullModeProducer() : | 11 MojoPullModeProducer::MojoPullModeProducer() |
12 state_(MediaState::UNPREPARED), | 12 : state_(MediaState::UNPREPARED), |
13 demand_(Demand::kNegative), | 13 demand_(Demand::kNegative), |
14 pts_(0), | 14 pts_(0), |
15 cached_packet_(nullptr) {} | 15 cached_packet_(nullptr) {} |
16 | 16 |
17 MojoPullModeProducer::~MojoPullModeProducer() { | 17 MojoPullModeProducer::~MojoPullModeProducer() { |
18 base::AutoLock lock(lock_); | 18 base::AutoLock lock(lock_); |
19 } | 19 } |
20 | 20 |
21 void MojoPullModeProducer::AddBinding( | 21 void MojoPullModeProducer::AddBinding( |
22 InterfaceRequest<MediaPullModeProducer> producer) { | 22 InterfaceRequest<MediaPullModeProducer> producer) { |
23 bindings_.AddBinding(this, producer.Pass()); | 23 bindings_.AddBinding(this, producer.Pass()); |
24 } | 24 } |
25 | 25 |
26 void MojoPullModeProducer::GetBuffer(const GetBufferCallback& callback) { | 26 void MojoPullModeProducer::GetBuffer(const GetBufferCallback& callback) { |
27 if (!mojo_allocator_.initialized()) { | 27 if (!mojo_allocator_.initialized()) { |
28 mojo_allocator_.InitNew(256 * 1024); // TODO(dalesat): Made up! | 28 mojo_allocator_.InitNew(256 * 1024); // TODO(dalesat): Made up! |
29 } | 29 } |
30 | 30 |
31 { | 31 { |
32 base::AutoLock lock(lock_); | 32 base::AutoLock lock(lock_); |
33 if (state_ == MediaState::UNPREPARED) { | 33 if (state_ == MediaState::UNPREPARED) { |
34 state_ = MediaState::PAUSED; | 34 state_ = MediaState::PAUSED; |
35 } | 35 } |
36 } | 36 } |
37 | 37 |
38 callback.Run(mojo_allocator_.GetDuplicateHandle()); | 38 callback.Run(mojo_allocator_.GetDuplicateHandle()); |
39 | 39 |
40 DCHECK(!cached_packet_); | 40 DCHECK(!cached_packet_); |
41 DCHECK(demand_callback_); | 41 DCHECK(demand_callback_); |
42 demand_callback_(Demand::kPositive); | 42 demand_callback_(Demand::kPositive); |
43 } | 43 } |
44 | 44 |
45 void MojoPullModeProducer::PullPacket( | 45 void MojoPullModeProducer::PullPacket(MediaPacketPtr to_release, |
46 MediaPacketPtr to_release, | 46 const PullPacketCallback& callback) { |
47 const PullPacketCallback& callback) { | |
48 if (to_release) { | 47 if (to_release) { |
49 // The client has piggy-backed a release on this pull request. | 48 // The client has piggy-backed a release on this pull request. |
50 ReleasePacket(to_release.Pass()); | 49 ReleasePacket(to_release.Pass()); |
51 } | 50 } |
52 | 51 |
53 { | 52 { |
54 base::AutoLock lock(lock_); | 53 base::AutoLock lock(lock_); |
55 | 54 |
56 if (state_ == MediaState::UNPREPARED) { | 55 if (state_ == MediaState::UNPREPARED) { |
57 // The consumer has yet to call GetBuffer. This request will have to wait. | 56 // The consumer has yet to call GetBuffer. This request will have to wait. |
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71 } | 70 } |
72 | 71 |
73 DCHECK(demand_callback_); | 72 DCHECK(demand_callback_); |
74 demand_callback_(Demand::kPositive); | 73 demand_callback_(Demand::kPositive); |
75 } | 74 } |
76 | 75 |
77 void MojoPullModeProducer::ReleasePacket(MediaPacketPtr to_release) { | 76 void MojoPullModeProducer::ReleasePacket(MediaPacketPtr to_release) { |
78 { | 77 { |
79 base::AutoLock lock(lock_); | 78 base::AutoLock lock(lock_); |
80 uint64_t size = to_release->payload ? to_release->payload->length : 0; | 79 uint64_t size = to_release->payload ? to_release->payload->length : 0; |
81 void* payload = size == 0 ? nullptr : | 80 void* payload = size == 0 ? nullptr : mojo_allocator_.PtrFromOffset( |
82 mojo_allocator_.PtrFromOffset(to_release->payload->offset); | 81 to_release->payload->offset); |
83 | 82 |
84 for (auto iterator = unreleased_packets_.begin(); true; ++iterator) { | 83 for (auto iterator = unreleased_packets_.begin(); true; ++iterator) { |
85 if (iterator == unreleased_packets_.end()) { | 84 if (iterator == unreleased_packets_.end()) { |
86 DCHECK(false) << "released packet has bad offset and/or size"; | 85 DCHECK(false) << "released packet has bad offset and/or size"; |
87 break; | 86 break; |
88 } | 87 } |
89 | 88 |
90 if ((*iterator)->payload() == payload && (*iterator)->size() == size) { | 89 if ((*iterator)->payload() == payload && (*iterator)->size() == size) { |
91 unreleased_packets_.erase(iterator); | 90 unreleased_packets_.erase(iterator); |
92 break; | 91 break; |
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148 } | 147 } |
149 } | 148 } |
150 | 149 |
151 bool MojoPullModeProducer::MaybeHandlePullUnsafe( | 150 bool MojoPullModeProducer::MaybeHandlePullUnsafe( |
152 const PullPacketCallback& callback) { | 151 const PullPacketCallback& callback) { |
153 DCHECK(!callback.is_null()); | 152 DCHECK(!callback.is_null()); |
154 lock_.AssertAcquired(); | 153 lock_.AssertAcquired(); |
155 | 154 |
156 if (state_ == MediaState::ENDED) { | 155 if (state_ == MediaState::ENDED) { |
157 // At end-of-stream. Respond with empty end-of-stream packet. | 156 // At end-of-stream. Respond with empty end-of-stream packet. |
158 HandlePullWithPacketUnsafe( | 157 HandlePullWithPacketUnsafe(callback, Packet::CreateEndOfStream(pts_)); |
159 callback, | |
160 Packet::CreateEndOfStream(pts_)); | |
161 return true; | 158 return true; |
162 } | 159 } |
163 | 160 |
164 if (!cached_packet_) { | 161 if (!cached_packet_) { |
165 // Waiting for packet or end-of-stream indication. | 162 // Waiting for packet or end-of-stream indication. |
166 return false; | 163 return false; |
167 } | 164 } |
168 | 165 |
169 HandlePullWithPacketUnsafe(callback, std::move(cached_packet_)); | 166 HandlePullWithPacketUnsafe(callback, std::move(cached_packet_)); |
170 return true; | 167 return true; |
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191 | 188 |
192 MediaPacketPtr media_packet = MediaPacket::New(); | 189 MediaPacketPtr media_packet = MediaPacket::New(); |
193 media_packet->pts = packet->pts(); | 190 media_packet->pts = packet->pts(); |
194 media_packet->end_of_stream = packet->end_of_stream(); | 191 media_packet->end_of_stream = packet->end_of_stream(); |
195 media_packet->payload = region.Pass(); | 192 media_packet->payload = region.Pass(); |
196 pts_ = packet->pts(); | 193 pts_ = packet->pts(); |
197 | 194 |
198 return media_packet.Pass(); | 195 return media_packet.Pass(); |
199 } | 196 } |
200 | 197 |
201 } // namespace media | 198 } // namespace media |
202 } // namespace mojo | 199 } // namespace mojo |
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