OLD | NEW |
| (Empty) |
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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "media/base/android/video_decoder_job.h" | |
6 | |
7 #include <utility> | |
8 | |
9 #include "base/bind.h" | |
10 #include "base/lazy_instance.h" | |
11 #include "base/threading/thread.h" | |
12 #include "media/base/android/media_drm_bridge.h" | |
13 #include "media/base/android/sdk_media_codec_bridge.h" | |
14 | |
15 namespace media { | |
16 | |
17 class VideoDecoderThread : public base::Thread { | |
18 public: | |
19 VideoDecoderThread() : base::Thread("MediaSource_VideoDecoderThread") { | |
20 Start(); | |
21 } | |
22 }; | |
23 | |
24 // TODO(qinmin): Check if it is tolerable to use worker pool to handle all the | |
25 // decoding tasks so that we don't need a global thread here. | |
26 // http://crbug.com/245750 | |
27 base::LazyInstance<VideoDecoderThread>::Leaky | |
28 g_video_decoder_thread = LAZY_INSTANCE_INITIALIZER; | |
29 | |
30 VideoDecoderJob::VideoDecoderJob( | |
31 const base::Closure& request_data_cb, | |
32 const base::Closure& on_demuxer_config_changed_cb) | |
33 : MediaDecoderJob(g_video_decoder_thread.Pointer()->task_runner(), | |
34 request_data_cb, | |
35 on_demuxer_config_changed_cb), | |
36 video_codec_(kUnknownVideoCodec), | |
37 config_width_(0), | |
38 config_height_(0), | |
39 output_width_(0), | |
40 output_height_(0) { | |
41 } | |
42 | |
43 VideoDecoderJob::~VideoDecoderJob() {} | |
44 | |
45 bool VideoDecoderJob::SetVideoSurface(gl::ScopedJavaSurface surface) { | |
46 // For an empty surface, always pass it to the |media_codec_bridge_| job so | |
47 // that it can detach from the current one. Otherwise, don't pass an | |
48 // unprotected surface if the video content requires a protected one. | |
49 if (!surface.IsEmpty() && IsProtectedSurfaceRequired() && | |
50 !surface.is_protected()) { | |
51 return false; | |
52 } | |
53 | |
54 surface_ = std::move(surface); | |
55 need_to_reconfig_decoder_job_ = true; | |
56 return true; | |
57 } | |
58 | |
59 bool VideoDecoderJob::HasStream() const { | |
60 return video_codec_ != kUnknownVideoCodec; | |
61 } | |
62 | |
63 void VideoDecoderJob::ReleaseDecoderResources() { | |
64 MediaDecoderJob::ReleaseDecoderResources(); | |
65 surface_ = gl::ScopedJavaSurface(); | |
66 } | |
67 | |
68 void VideoDecoderJob::SetDemuxerConfigs(const DemuxerConfigs& configs) { | |
69 video_codec_ = configs.video_codec; | |
70 config_width_ = configs.video_size.width(); | |
71 config_height_ = configs.video_size.height(); | |
72 set_is_content_encrypted(configs.is_video_encrypted); | |
73 if (!media_codec_bridge_) { | |
74 output_width_ = config_width_; | |
75 output_height_ = config_height_; | |
76 } | |
77 } | |
78 | |
79 void VideoDecoderJob::ReleaseOutputBuffer( | |
80 int output_buffer_index, | |
81 size_t offset, | |
82 size_t size, | |
83 bool render_output, | |
84 bool is_late_frame, | |
85 base::TimeDelta current_presentation_timestamp, | |
86 MediaCodecStatus status, | |
87 const DecoderCallback& callback) { | |
88 media_codec_bridge_->ReleaseOutputBuffer(output_buffer_index, render_output); | |
89 callback.Run(status, is_late_frame, current_presentation_timestamp, | |
90 current_presentation_timestamp); | |
91 } | |
92 | |
93 bool VideoDecoderJob::ComputeTimeToRender() const { | |
94 return true; | |
95 } | |
96 | |
97 bool VideoDecoderJob::IsCodecReconfigureNeeded( | |
98 const DemuxerConfigs& configs) const { | |
99 if (!media_codec_bridge_) | |
100 return true; | |
101 | |
102 if (!AreDemuxerConfigsChanged(configs)) | |
103 return false; | |
104 | |
105 bool only_size_changed = false; | |
106 if (video_codec_ == configs.video_codec && | |
107 is_content_encrypted() == configs.is_video_encrypted) { | |
108 only_size_changed = true; | |
109 } | |
110 | |
111 return !only_size_changed || | |
112 !static_cast<VideoCodecBridge*>(media_codec_bridge_.get())-> | |
113 IsAdaptivePlaybackSupported(configs.video_size.width(), | |
114 configs.video_size.height()); | |
115 } | |
116 | |
117 bool VideoDecoderJob::AreDemuxerConfigsChanged( | |
118 const DemuxerConfigs& configs) const { | |
119 return video_codec_ != configs.video_codec || | |
120 is_content_encrypted() != configs.is_video_encrypted || | |
121 config_width_ != configs.video_size.width() || | |
122 config_height_ != configs.video_size.height(); | |
123 } | |
124 | |
125 MediaDecoderJob::MediaDecoderJobStatus | |
126 VideoDecoderJob::CreateMediaCodecBridgeInternal() { | |
127 if (surface_.IsEmpty()) { | |
128 ReleaseMediaCodecBridge(); | |
129 return STATUS_FAILURE; | |
130 } | |
131 | |
132 // If we cannot find a key frame in cache, browser seek is needed. | |
133 bool next_video_data_is_iframe = SetCurrentFrameToPreviouslyCachedKeyFrame(); | |
134 if (!next_video_data_is_iframe) | |
135 return STATUS_KEY_FRAME_REQUIRED; | |
136 | |
137 bool is_secure = is_content_encrypted() && drm_bridge() && | |
138 drm_bridge()->IsProtectedSurfaceRequired(); | |
139 | |
140 media_codec_bridge_.reset(VideoCodecBridge::CreateDecoder( | |
141 video_codec_, is_secure, gfx::Size(config_width_, config_height_), | |
142 surface_.j_surface().obj(), GetMediaCrypto())); | |
143 | |
144 if (!media_codec_bridge_) | |
145 return STATUS_FAILURE; | |
146 | |
147 return STATUS_SUCCESS; | |
148 } | |
149 | |
150 bool VideoDecoderJob::UpdateOutputFormat() { | |
151 if (!media_codec_bridge_) | |
152 return false; | |
153 int prev_output_width = output_width_; | |
154 int prev_output_height = output_height_; | |
155 // See b/18224769. The values reported from MediaCodecBridge::GetOutputSize | |
156 // correspond to the actual video frame size, but this is not necessarily the | |
157 // size that should be output. | |
158 output_width_ = config_width_; | |
159 output_height_ = config_height_; | |
160 return (output_width_ != prev_output_width) || | |
161 (output_height_ != prev_output_height); | |
162 } | |
163 | |
164 bool VideoDecoderJob::IsProtectedSurfaceRequired() { | |
165 return is_content_encrypted() && drm_bridge() && | |
166 drm_bridge()->IsProtectedSurfaceRequired(); | |
167 } | |
168 | |
169 } // namespace media | |
OLD | NEW |