Index: media/filters/webm_muxer.cc |
diff --git a/media/filters/webm_muxer.cc b/media/filters/webm_muxer.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..2acdd3e476428426c1358d95d52fd82ab7ccd628 |
--- /dev/null |
+++ b/media/filters/webm_muxer.cc |
@@ -0,0 +1,118 @@ |
+// Copyright 2015 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. |
+ |
+#include "media/filters/webm_muxer.h" |
+ |
+#include "base/time/time.h" |
+ |
+namespace media { |
+ |
+WebmMuxer::WebmMuxer(const WriteDataCB& write_data_callback) |
+ : write_data_callback_(write_data_callback), |
+ time_start_(base::TimeTicks::Now()), |
+ position_(0), |
+ segment_(new mkvmuxer::Segment()) { |
+ DVLOG(3) << __FUNCTION__; |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ segment_->Init(this); |
+ segment_->set_mode(mkvmuxer::Segment::kLive); |
+ |
+ // DateUTC is specified in nanoseconds from 0:00 on January 1st, 2001. |
+ base::Time::Exploded millennium_exploded = {}; |
+ millennium_exploded.year = 2001; |
+ millennium_exploded.month = 1; |
+ millennium_exploded.day_of_month = 1; |
+ segment_->GetSegmentInfo()->set_date_utc( |
+ (base::Time::Now() - base::Time::FromUTCExploded(millennium_exploded)) |
+ .InMicroseconds() * |
+ base::Time::kNanosecondsPerMicrosecond); |
+ |
+ mkvmuxer::SegmentInfo* const info = segment_->GetSegmentInfo(); |
+ info->set_writing_app("Chrome"); |
+ info->set_muxing_app("Chrome"); |
+} |
+ |
+WebmMuxer::~WebmMuxer() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ DVLOG(3) << __FUNCTION__; |
+} |
+ |
+void WebmMuxer::OnEncodedVideo(int track_index, |
+ const std::string& encoded_data, |
+ const base::TimeTicks& timestamp, |
+ bool keyframe, |
+ const gfx::Size& frame_size, |
+ double frame_rate) { |
+ DVLOG(3) << __FUNCTION__; |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ |
+ const int track_index_starting_from_one = track_index + 1; |
+ |
+ if (std::find(track_indexes_.begin(), track_indexes_.end(), |
+ track_index_starting_from_one) == track_indexes_.end()) { |
+ AddVideoTrack(frame_size, frame_rate, track_index_starting_from_one); |
+ track_indexes_.push_back(track_index_starting_from_one); |
+ } |
+ |
+ const int64 time_code = (timestamp - time_start_).InMicroseconds() * |
+ base::Time::kNanosecondsPerMicrosecond; |
+ segment_->AddFrame(reinterpret_cast<const uint8_t*>(encoded_data.data()), |
+ encoded_data.size(), |
+ track_index_starting_from_one, |
+ time_code, |
+ keyframe); |
+ |
+ DVLOG(3) << __FUNCTION__ << " length=" << encoded_data.size() |
+ << (keyframe ? " keyframe" : "") << ", time_code=" << time_code; |
+} |
+ |
+bool WebmMuxer::AddVideoTrack(const gfx::Size& frame_size, |
+ double frame_rate, |
+ int track_index_starting_from_one) { |
+ DVLOG(3) << __FUNCTION__ << " size=" << frame_size.ToString() << " " |
+ << frame_rate << "fps, index: " << track_index_starting_from_one; |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ |
+ segment_->AddVideoTrack(frame_size.width(), frame_size.height(), |
+ track_index_starting_from_one); |
+ mkvmuxer::VideoTrack* video_track = reinterpret_cast<mkvmuxer::VideoTrack*>( |
+ segment_->GetTrackByNumber(track_index_starting_from_one)); |
+ |
+ video_track->set_codec_id(mkvmuxer::Tracks::kVp8CodecId); |
+ video_track->set_crop_right(0); |
+ video_track->set_crop_bottom(0); |
+ video_track->set_frame_rate(frame_rate); |
+ video_track->set_default_duration(33); // kFrameIntervalNs / 3); |
+ |
+ return true; |
+} |
+ |
+mkvmuxer::int32 WebmMuxer::Write(const void* buf, mkvmuxer::uint32 len) { |
+ DVLOG(3) << __FUNCTION__ << " length=" << len; |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ // TODO(mcasas): Last parameter is |last_in_slice|, how to calculate it? |
+ write_data_callback_.Run(static_cast<const char*>(buf), len, false); |
+ position_ += len; |
+ return 0; |
+} |
+ |
+mkvmuxer::int64 WebmMuxer::Position() const { |
+ return position_; |
+} |
+ |
+mkvmuxer::int32 WebmMuxer::Position(mkvmuxer::int64 position) { |
+ // NOTREACHED(); |
+ return -1; |
+} |
+ |
+bool WebmMuxer::Seekable() const { |
+ return false; |
+} |
+ |
+void WebmMuxer::ElementStartNotify(mkvmuxer::uint64 element_id, |
+ mkvmuxer::int64 position) { |
+ // NOTIMPLEMENTED(); |
+} |
+ |
+} // namespace media |