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// 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
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