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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 "content/renderer/media/media_recorder_handler.h" | 5 #include "content/renderer/media/media_recorder_handler.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/location.h" | 8 #include "base/location.h" |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "base/strings/string_tokenizer.h" | 10 #include "base/strings/string_tokenizer.h" |
11 #include "base/strings/string_util.h" | 11 #include "base/strings/string_util.h" |
12 #include "content/renderer/media/audio_track_recorder.h" | 12 #include "content/renderer/media/audio_track_recorder.h" |
13 #include "content/renderer/media/media_stream_track.h" | 13 #include "content/renderer/media/media_stream_track.h" |
14 #include "content/renderer/media/video_track_recorder.h" | 14 #include "content/renderer/media/video_track_recorder.h" |
15 #include "content/renderer/media/webrtc_uma_histograms.h" | 15 #include "content/renderer/media/webrtc_uma_histograms.h" |
16 #include "media/audio/audio_parameters.h" | 16 #include "media/audio/audio_parameters.h" |
17 #include "media/base/audio_bus.h" | 17 #include "media/base/audio_bus.h" |
18 #include "media/base/bind_to_current_loop.h" | 18 #include "media/base/bind_to_current_loop.h" |
| 19 #include "media/base/mime_util.h" |
19 #include "media/base/video_frame.h" | 20 #include "media/base/video_frame.h" |
20 #include "media/capture/webm_muxer.h" | 21 #include "media/capture/webm_muxer.h" |
21 #include "third_party/WebKit/public/platform/WebMediaRecorderHandlerClient.h" | 22 #include "third_party/WebKit/public/platform/WebMediaRecorderHandlerClient.h" |
22 #include "third_party/WebKit/public/platform/WebString.h" | 23 #include "third_party/WebKit/public/platform/WebString.h" |
23 | 24 |
24 using base::TimeDelta; | 25 using base::TimeDelta; |
25 using base::TimeTicks; | 26 using base::TimeTicks; |
26 | 27 |
27 namespace content { | 28 namespace content { |
28 | 29 |
29 MediaRecorderHandler::MediaRecorderHandler() | 30 MediaRecorderHandler::MediaRecorderHandler() |
30 : use_vp9_(false), | 31 : use_vp9_(false), |
31 recording_(false), | 32 recording_(false), |
32 client_(nullptr), | 33 client_(nullptr), |
33 weak_factory_(this) {} | 34 weak_factory_(this) {} |
34 | 35 |
35 MediaRecorderHandler::~MediaRecorderHandler() { | 36 MediaRecorderHandler::~MediaRecorderHandler() { |
36 DCHECK(main_render_thread_checker_.CalledOnValidThread()); | 37 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
37 // Send a |last_in_slice| to our |client_|. | 38 // Send a |last_in_slice| to our |client_|. |
38 if (client_) | 39 if (client_) |
39 client_->writeData(nullptr, 0u, true); | 40 client_->writeData(nullptr, 0u, true); |
40 } | 41 } |
41 | 42 |
42 bool MediaRecorderHandler::canSupportMimeType( | 43 bool MediaRecorderHandler::canSupportMimeType( |
43 const blink::WebString& mimeType) { | 44 const blink::WebString& web_type, const blink::WebString& web_codecs) { |
44 DCHECK(main_render_thread_checker_.CalledOnValidThread()); | 45 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
45 // Ensure we can support each passed MIME type. | 46 // An empty |web_type| means MediaRecorderHandler can choose its preferred |
46 const std::string input = mimeType.utf8(); // Must outlive tokenizer! | 47 // codecs. |
47 base::StringTokenizer tokenizer(input, ","); | 48 if (web_type.isEmpty()) |
48 while (tokenizer.GetNext()) { | 49 return true; |
49 // Strip whitespace. | 50 |
50 const std::string token(base::CollapseWhitespaceASCII( | 51 const std::string type(web_type.utf8()); |
51 tokenizer.token(), true /* trim sequences with line breaks*/)); | 52 const bool video = base::EqualsCaseInsensitiveASCII(type, "video/webm"); |
52 if (!token.empty() && | 53 const bool audio = |
53 !base::EqualsCaseInsensitiveASCII(token, "video/vp8") && | 54 video ? false : base::EqualsCaseInsensitiveASCII(type, "audio/webm"); |
54 !base::EqualsCaseInsensitiveASCII(token, "video/vp9") && | 55 if (!video && !audio) |
55 !base::EqualsCaseInsensitiveASCII(token, "audio/opus") && | 56 return false; |
56 !base::EqualsCaseInsensitiveASCII(token, "video/webm") && | 57 |
57 !base::EqualsCaseInsensitiveASCII(token, "audio/webm")) { | 58 // Both |video| and |audio| support empty |codecs|; |type| == "video" supports |
| 59 // vp8, vp9 or opus; |type| = "audio", supports only opus. |
| 60 // http://www.webmproject.org/docs/container Sec:"HTML5 Video Type Parameters" |
| 61 static const char* kVideoCodecs[] = { "vp8", "vp9", "opus" }; |
| 62 static const char* kAudioCodecs[] = { "opus" }; |
| 63 const char** codecs = video ? &kVideoCodecs[0] : &kAudioCodecs[0]; |
| 64 int codecs_count = video ? arraysize(kVideoCodecs) : arraysize(kAudioCodecs); |
| 65 |
| 66 std::vector<std::string> codecs_list; |
| 67 media::ParseCodecString(web_codecs.utf8(), &codecs_list, true /* strip */); |
| 68 for (const auto& codec : codecs_list) { |
| 69 const auto found = std::find_if( |
| 70 &codecs[0], &codecs[codecs_count], [&codec](const char* name) { |
| 71 return base::EqualsCaseInsensitiveASCII(codec, name); |
| 72 }); |
| 73 if (found == &codecs[codecs_count]) |
58 return false; | 74 return false; |
59 } | |
60 } | 75 } |
61 | |
62 return true; | 76 return true; |
63 } | 77 } |
64 | 78 |
65 bool MediaRecorderHandler::initialize( | 79 bool MediaRecorderHandler::initialize( |
66 blink::WebMediaRecorderHandlerClient* client, | 80 blink::WebMediaRecorderHandlerClient* client, |
67 const blink::WebMediaStream& media_stream, | 81 const blink::WebMediaStream& media_stream, |
68 const blink::WebString& mimeType) { | 82 const blink::WebString& type, |
| 83 const blink::WebString& codecs) { |
69 DCHECK(main_render_thread_checker_.CalledOnValidThread()); | 84 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
70 // Save histogram data so we can see how much MediaStream Recorder is used. | 85 // Save histogram data so we can see how much MediaStream Recorder is used. |
71 // The histogram counts the number of calls to the JS API. | 86 // The histogram counts the number of calls to the JS API. |
72 UpdateWebRTCMethodCount(WEBKIT_MEDIA_STREAM_RECORDER); | 87 UpdateWebRTCMethodCount(WEBKIT_MEDIA_STREAM_RECORDER); |
73 | 88 |
74 if (!canSupportMimeType(mimeType)) { | 89 if (!canSupportMimeType(type, codecs)) { |
75 DLOG(ERROR) << "Can't support type " << mimeType.utf8(); | 90 DLOG(ERROR) << "Can't support " << type.utf8() |
| 91 << ";codecs=" << codecs.utf8(); |
76 return false; | 92 return false; |
77 } | 93 } |
78 use_vp9_ = mimeType.utf8().compare("video/vp9") == 0; | 94 use_vp9_ = base::ToLowerASCII(codecs.utf8()).find("vp9") != std::string::npos; |
79 media_stream_ = media_stream; | 95 media_stream_ = media_stream; |
80 DCHECK(client); | 96 DCHECK(client); |
81 client_ = client; | 97 client_ = client; |
82 | 98 |
83 return true; | 99 return true; |
84 } | 100 } |
85 | 101 |
86 bool MediaRecorderHandler::start() { | 102 bool MediaRecorderHandler::start() { |
87 DCHECK(main_render_thread_checker_.CalledOnValidThread()); | 103 DCHECK(main_render_thread_checker_.CalledOnValidThread()); |
88 DCHECK(!recording_); | 104 DCHECK(!recording_); |
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239 recorder->OnData(audio_bus, timestamp); | 255 recorder->OnData(audio_bus, timestamp); |
240 } | 256 } |
241 | 257 |
242 void MediaRecorderHandler::SetAudioFormatForTesting( | 258 void MediaRecorderHandler::SetAudioFormatForTesting( |
243 const media::AudioParameters& params) { | 259 const media::AudioParameters& params) { |
244 for (auto* recorder : audio_recorders_) | 260 for (auto* recorder : audio_recorders_) |
245 recorder->OnSetFormat(params); | 261 recorder->OnSetFormat(params); |
246 } | 262 } |
247 | 263 |
248 } // namespace content | 264 } // namespace content |
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