| // Copyright 2013 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 "content/renderer/media/websourcebuffer_impl.h" |
| |
| #include "base/float_util.h" |
| #include "media/filters/chunk_demuxer.h" |
| |
| namespace content { |
| |
| static base::TimeDelta DoubleToTimeDelta(double time) { |
| DCHECK(!base::IsNaN(time)); |
| DCHECK_GE(time, 0); |
| if (time == std::numeric_limits<double>::infinity()) |
| return media::kInfiniteDuration(); |
| |
| base::TimeDelta max_time = base::TimeDelta::FromInternalValue(kint64max - 1); |
| double max_time_in_seconds = max_time.InSecondsF(); |
| |
| if (time >= max_time_in_seconds) |
| return max_time; |
| |
| return base::TimeDelta::FromMicroseconds( |
| time * base::Time::kMicrosecondsPerSecond); |
| } |
| |
| WebSourceBufferImpl::WebSourceBufferImpl( |
| const std::string& id, media::ChunkDemuxer* demuxer) |
| : id_(id), |
| demuxer_(demuxer) { |
| DCHECK(demuxer_); |
| } |
| |
| WebSourceBufferImpl::~WebSourceBufferImpl() { |
| DCHECK(!demuxer_) << "Object destroyed w/o removedFromMediaSource() call"; |
| } |
| |
| blink::WebTimeRanges WebSourceBufferImpl::buffered() { |
| media::Ranges<base::TimeDelta> ranges = demuxer_->GetBufferedRanges(id_); |
| blink::WebTimeRanges result(ranges.size()); |
| for (size_t i = 0; i < ranges.size(); i++) { |
| result[i].start = ranges.start(i).InSecondsF(); |
| result[i].end = ranges.end(i).InSecondsF(); |
| } |
| return result; |
| } |
| |
| void WebSourceBufferImpl::append(const unsigned char* data, unsigned length) { |
| demuxer_->AppendData(id_, data, length); |
| } |
| |
| void WebSourceBufferImpl::abort() { |
| demuxer_->Abort(id_); |
| } |
| |
| void WebSourceBufferImpl::remove(double start, double end) { |
| demuxer_->Remove(id_, DoubleToTimeDelta(start), DoubleToTimeDelta(end)); |
| } |
| |
| bool WebSourceBufferImpl::setTimestampOffset(double offset) { |
| base::TimeDelta time_offset = base::TimeDelta::FromMicroseconds( |
| offset * base::Time::kMicrosecondsPerSecond); |
| return demuxer_->SetTimestampOffset(id_, time_offset); |
| } |
| |
| void WebSourceBufferImpl::setAppendWindowStart(double start) { |
| demuxer_->SetAppendWindowStart(id_, DoubleToTimeDelta(start)); |
| } |
| |
| void WebSourceBufferImpl::setAppendWindowEnd(double end) { |
| demuxer_->SetAppendWindowEnd(id_, DoubleToTimeDelta(end)); |
| } |
| |
| void WebSourceBufferImpl::removedFromMediaSource() { |
| demuxer_->RemoveId(id_); |
| demuxer_ = NULL; |
| } |
| |
| } // namespace content |