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media / filters / hls_network_access_impl.cc [blame]
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/filters/hls_network_access_impl.h"
#include "base/task/bind_post_task.h"
namespace media {
HlsNetworkAccessImpl::~HlsNetworkAccessImpl() = default;
HlsNetworkAccessImpl::HlsNetworkAccessImpl(
base::SequenceBound<HlsDataSourceProvider> dsp)
: data_source_provider_(std::move(dsp)) {
// This is always created on the main sequence, but used on the media sequence
DETACH_FROM_SEQUENCE(media_sequence_checker_);
}
void HlsNetworkAccessImpl::ReadSegmentQueueInternal(
HlsDataSourceProvider::SegmentQueue media_segment_url_queue,
HlsDataSourceProvider::ReadCb cb) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
// Callers of `ReadSegmentQueueInternal` should enforce this.
CHECK(data_source_provider_);
data_source_provider_
.AsyncCall(&HlsDataSourceProvider::ReadFromCombinedUrlQueue)
.WithArgs(std::move(media_segment_url_queue),
base::BindPostTaskToCurrentDefault(std::move(cb)));
}
void HlsNetworkAccessImpl::ReadAllInternal(const GURL& uri,
HlsDataSourceProvider::ReadCb cb,
bool bypass_cache) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
// Callers of `ReadAllInternal` should enforce this.
CHECK(data_source_provider_);
HlsDataSourceProvider::SegmentQueue queue;
queue.emplace(uri, std::nullopt, bypass_cache);
ReadSegmentQueueInternal(
std::move(queue),
base::BindOnce(&HlsNetworkAccessImpl::ReadUntilExhausted,
weak_factory_.GetWeakPtr(), std::move(cb)));
}
void HlsNetworkAccessImpl::OnKeyFetch(
scoped_refptr<hls::MediaSegment::EncryptionData> enc_data,
base::OnceCallback<void(HlsDataSourceProvider::ReadCb)> next_op,
HlsDataSourceProvider::ReadCb cb,
HlsDataSourceProvider::ReadResult result) {
if (!result.has_value()) {
std::move(cb).Run(std::move(result).error().AddHere());
return;
}
auto stream = std::move(result).value();
enc_data->ImportKey(stream->AsString());
if (enc_data->NeedsKeyFetch()) {
std::move(cb).Run({HlsDataSourceProvider::ReadStatus::Codes::kError,
"Error importing key in encrypted segment fetch"});
return;
}
std::move(next_op).Run(std::move(cb));
}
void HlsNetworkAccessImpl::ReadManifest(const GURL& uri,
HlsDataSourceProvider::ReadCb cb) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
if (!data_source_provider_) {
std::move(cb).Run(HlsDataSourceProvider::ReadStatus::Codes::kStopped);
return;
}
ReadAllInternal(uri, std::move(cb), /*bypass_cache=*/true);
}
void HlsNetworkAccessImpl::ReadKey(
const hls::MediaSegment::EncryptionData& data,
HlsDataSourceProvider::ReadCb cb) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
if (!data_source_provider_) {
std::move(cb).Run(HlsDataSourceProvider::ReadStatus::Codes::kStopped);
return;
}
ReadAllInternal(data.GetUri(), std::move(cb));
}
void HlsNetworkAccessImpl::ReadMediaSegment(const hls::MediaSegment& segment,
bool read_chunked,
bool include_init,
HlsDataSourceProvider::ReadCb cb) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
if (!data_source_provider_) {
std::move(cb).Run(HlsDataSourceProvider::ReadStatus::Codes::kStopped);
return;
}
if (!read_chunked) {
cb = base::BindOnce(&HlsNetworkAccessImpl::ReadUntilExhausted,
weak_factory_.GetWeakPtr(), std::move(cb));
}
HlsDataSourceProvider::SegmentQueue queue;
if (include_init) {
if (auto init = segment.GetInitializationSegment()) {
queue.emplace(init->GetUri(), init->GetByteRange(), false);
}
}
queue.emplace(segment.GetUri(), segment.GetByteRange(), false);
if (auto enc_data = segment.GetEncryptionData()) {
if (enc_data->NeedsKeyFetch()) {
ReadKey(
*enc_data,
base::BindOnce(
&HlsNetworkAccessImpl::OnKeyFetch, weak_factory_.GetWeakPtr(),
enc_data,
base::BindOnce(&HlsNetworkAccessImpl::ReadSegmentQueueInternal,
weak_factory_.GetWeakPtr(), std::move(queue)),
std::move(cb)));
return;
}
}
ReadSegmentQueueInternal(std::move(queue), std::move(cb));
}
void HlsNetworkAccessImpl::ReadStream(
std::unique_ptr<HlsDataSourceStream> stream,
HlsDataSourceProvider::ReadCb cb) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
CHECK(stream);
if (!data_source_provider_) {
std::move(cb).Run(HlsDataSourceProvider::ReadStatus::Codes::kStopped);
return;
}
data_source_provider_
.AsyncCall(&HlsDataSourceProvider::ReadFromExistingStream)
.WithArgs(std::move(stream),
base::BindPostTaskToCurrentDefault(std::move(cb)));
}
void HlsNetworkAccessImpl::AbortPendingReads(base::OnceClosure cb) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
data_source_provider_.AsyncCall(&HlsDataSourceProvider::AbortPendingReads)
.WithArgs(std::move(cb));
}
void HlsNetworkAccessImpl::ReadUntilExhausted(
HlsDataSourceProvider::ReadCb cb,
HlsDataSourceProvider::ReadResult result) {
DCHECK_CALLED_ON_VALID_SEQUENCE(media_sequence_checker_);
if (!result.has_value()) {
std::move(cb).Run(std::move(result).error());
return;
}
auto stream = std::move(result).value();
if (!stream->CanReadMore()) {
std::move(cb).Run(std::move(stream));
return;
}
ReadStream(std::move(stream),
base::BindOnce(&HlsNetworkAccessImpl::ReadUntilExhausted,
weak_factory_.GetWeakPtr(), std::move(cb)));
}
} // namespace media