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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "media/mojo/services/mojo_video_decoder_service.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/bind_helpers.h" | |
9 #include "base/logging.h" | |
10 #include "base/threading/thread_task_runner_handle.h" | |
11 #include "media/base/decoder_buffer.h" | |
12 #include "media/base/video_decoder.h" | |
13 #include "media/base/video_decoder_config.h" | |
14 #include "media/base/video_frame.h" | |
15 #include "media/mojo/common/media_type_converters.h" | |
16 #include "media/mojo/services/mojo_media_client.h" | |
17 #include "mojo/public/c/system/types.h" | |
18 #include "mojo/public/cpp/system/buffer.h" | |
19 #include "mojo/public/cpp/system/handle.h" | |
20 | |
21 namespace media { | |
22 | |
23 MojoVideoDecoderService::MojoVideoDecoderService( | |
24 mojo::InterfaceRequest<mojom::VideoDecoder> request, | |
25 MojoMediaClient* mojo_media_client) | |
26 : binding_(this, std::move(request)), | |
27 mojo_media_client_(mojo_media_client), | |
28 weak_factory_(this) { | |
29 weak_this_ = weak_factory_.GetWeakPtr(); | |
30 } | |
31 | |
32 MojoVideoDecoderService::~MojoVideoDecoderService() {} | |
33 | |
34 void MojoVideoDecoderService::Construct( | |
35 mojom::VideoDecoderClientPtr client, | |
36 mojo::ScopedDataPipeConsumerHandle decoder_buffer_pipe) { | |
37 DVLOG(1) << __FUNCTION__; | |
38 | |
39 if (decoder_) | |
40 return; | |
41 | |
42 // TODO(sandersd): Provide callback for requesting a stub. | |
43 decoder_ = mojo_media_client_->CreateVideoDecoder( | |
44 base::ThreadTaskRunnerHandle::Get()); | |
45 | |
46 client_ = std::move(client); | |
47 decoder_buffer_pipe_ = std::move(decoder_buffer_pipe); | |
48 } | |
49 | |
50 void MojoVideoDecoderService::Initialize(mojom::VideoDecoderConfigPtr config, | |
51 bool low_delay, | |
52 const InitializeCallback& callback) { | |
53 DVLOG(1) << __FUNCTION__; | |
54 | |
55 if (!decoder_) { | |
56 callback.Run(false); | |
57 return; | |
58 } | |
59 | |
60 decoder_->Initialize( | |
61 config.To<VideoDecoderConfig>(), low_delay, nullptr, | |
62 base::Bind(&MojoVideoDecoderService::OnDecoderInitialized, weak_this_, | |
63 callback), | |
64 base::Bind(&MojoVideoDecoderService::OnDecoderOutput, weak_this_)); | |
65 } | |
66 | |
67 void MojoVideoDecoderService::OnDecoderInitialized( | |
68 const InitializeCallback& callback, | |
69 bool success) { | |
70 DVLOG(1) << __FUNCTION__; | |
71 callback.Run(success); | |
72 } | |
73 | |
74 void MojoVideoDecoderService::OnDecoderOutput( | |
75 const scoped_refptr<VideoFrame>& frame) { | |
76 DVLOG(1) << __FUNCTION__; | |
77 DCHECK(client_); | |
78 client_->OnVideoFrameDecoded(mojom::VideoFrame::From(frame)); | |
79 } | |
80 | |
81 void MojoVideoDecoderService::Decode(mojom::DecoderBufferPtr buffer, | |
82 const DecodeCallback& callback) { | |
83 DVLOG(1) << __FUNCTION__; | |
84 | |
85 if (!decoder_) { | |
86 callback.Run(mojom::DecodeStatus::DECODE_ERROR); | |
87 return; | |
88 } | |
89 | |
90 // TODO(sandersd): After a decode error, we should enter an error state and | |
91 // reject all future method calls. | |
92 // TODO(sandersd): Extract and share with MojoAudioDecoderService. | |
93 scoped_refptr<DecoderBuffer> media_buffer( | |
94 buffer.To<scoped_refptr<DecoderBuffer>>()); | |
95 if (!media_buffer->end_of_stream()) { | |
96 MojoResult result; | |
97 MojoHandleSignalsState state; | |
98 | |
99 // TODO(sandersd): Do not wait indefinitely. | |
100 result = | |
101 MojoWait(decoder_buffer_pipe_.get().value(), | |
102 MOJO_HANDLE_SIGNAL_READABLE, MOJO_DEADLINE_INDEFINITE, &state); | |
103 if (result != MOJO_RESULT_OK || | |
104 !(state.satisfied_signals & MOJO_HANDLE_SIGNAL_READABLE)) { | |
105 callback.Run(mojom::DecodeStatus::DECODE_ERROR); | |
106 return; | |
107 } | |
108 | |
109 uint32_t data_size = buffer->data_size; | |
110 CHECK_EQ(data_size, media_buffer->data_size()); | |
dcheng
2016/05/20 22:52:59
Nit: DCHECK_EQ? This should "never happen" since i
sandersd (OOO until July 31)
2016/05/20 23:42:12
That depends on what we're checking for; the code
dcheng
2016/05/20 23:48:14
That's why I suggested a static_assert in the Type
sandersd (OOO until July 31)
2016/05/20 23:56:14
In that case, you are more trusting of cross-file
| |
111 uint32_t bytes_read = data_size; | |
112 result = | |
113 ReadDataRaw(decoder_buffer_pipe_.get(), media_buffer->writable_data(), | |
114 &bytes_read, MOJO_READ_DATA_FLAG_ALL_OR_NONE); | |
115 if (result != MOJO_RESULT_OK || bytes_read != data_size) { | |
116 callback.Run(mojom::DecodeStatus::DECODE_ERROR); | |
117 return; | |
118 } | |
119 } | |
120 | |
121 decoder_->Decode(media_buffer, | |
122 base::Bind(&MojoVideoDecoderService::OnDecoderDecoded, | |
123 weak_this_, callback)); | |
124 } | |
125 | |
126 void MojoVideoDecoderService::OnDecoderDecoded(const DecodeCallback& callback, | |
127 DecodeStatus status) { | |
128 DVLOG(1) << __FUNCTION__; | |
129 callback.Run(static_cast<mojom::DecodeStatus>(status)); | |
130 } | |
131 | |
132 void MojoVideoDecoderService::Reset(const ResetCallback& callback) { | |
133 DVLOG(1) << __FUNCTION__; | |
134 | |
135 if (!decoder_) { | |
136 callback.Run(); | |
137 return; | |
138 } | |
139 | |
140 decoder_->Reset(base::Bind(&MojoVideoDecoderService::OnDecoderReset, | |
141 weak_this_, callback)); | |
142 } | |
143 | |
144 void MojoVideoDecoderService::OnDecoderReset(const ResetCallback& callback) { | |
145 DVLOG(1) << __FUNCTION__; | |
146 callback.Run(); | |
147 } | |
148 | |
149 } // namespace media | |
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