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.
5 #include "content/renderer/media/websourcebuffer_impl.h"
7 #include "base/float_util.h"
8 #include "media/filters/chunk_demuxer.h"
12 static base::TimeDelta DoubleToTimeDelta(double time) {
13 DCHECK(!base::IsNaN(time));
15 if (time == std::numeric_limits<double>::infinity())
16 return media::kInfiniteDuration();
18 base::TimeDelta max_time = base::TimeDelta::FromInternalValue(kint64max - 1);
19 double max_time_in_seconds = max_time.InSecondsF();
21 if (time >= max_time_in_seconds)
24 return base::TimeDelta::FromMicroseconds(
25 time * base::Time::kMicrosecondsPerSecond);
28 WebSourceBufferImpl::WebSourceBufferImpl(
29 const std::string& id, media::ChunkDemuxer* demuxer)
35 WebSourceBufferImpl::~WebSourceBufferImpl() {
36 DCHECK(!demuxer_) << "Object destroyed w/o removedFromMediaSource() call";
39 WebKit::WebTimeRanges WebSourceBufferImpl::buffered() {
40 media::Ranges<base::TimeDelta> ranges = demuxer_->GetBufferedRanges(id_);
41 WebKit::WebTimeRanges result(ranges.size());
42 for (size_t i = 0; i < ranges.size(); i++) {
43 result[i].start = ranges.start(i).InSecondsF();
44 result[i].end = ranges.end(i).InSecondsF();
49 void WebSourceBufferImpl::append(const unsigned char* data, unsigned length) {
50 demuxer_->AppendData(id_, data, length);
53 void WebSourceBufferImpl::abort() {
57 void WebSourceBufferImpl::remove(double start, double end) {
58 demuxer_->Remove(id_, DoubleToTimeDelta(start), DoubleToTimeDelta(end));
61 bool WebSourceBufferImpl::setTimestampOffset(double offset) {
62 base::TimeDelta time_offset = base::TimeDelta::FromMicroseconds(
63 offset * base::Time::kMicrosecondsPerSecond);
64 return demuxer_->SetTimestampOffset(id_, time_offset);
67 void WebSourceBufferImpl::setAppendWindowStart(double start) {
68 demuxer_->SetAppendWindowStart(id_, DoubleToTimeDelta(start));
71 void WebSourceBufferImpl::setAppendWindowEnd(double end) {
72 demuxer_->SetAppendWindowEnd(id_, DoubleToTimeDelta(end));
75 void WebSourceBufferImpl::removedFromMediaSource() {
76 demuxer_->RemoveId(id_);
80 } // namespace content