2014-02-14 23:21:05 +00:00
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// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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2014-10-01 22:10:21 +00:00
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#include "packager/mpd/base/xml/xml_node.h"
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2013-11-18 21:01:48 +00:00
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2014-09-30 23:52:58 +00:00
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#include <limits>
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2013-11-18 21:01:48 +00:00
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#include <set>
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2014-10-01 22:10:21 +00:00
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#include "packager/base/logging.h"
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2014-10-07 21:41:40 +00:00
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#include "packager/base/macros.h"
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2014-10-01 22:10:21 +00:00
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#include "packager/base/stl_util.h"
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#include "packager/base/strings/string_number_conversions.h"
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#include "packager/mpd/base/media_info.pb.h"
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#include "packager/mpd/base/segment_info.h"
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2013-11-18 21:01:48 +00:00
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2014-09-19 20:41:13 +00:00
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using edash_packager::xml::XmlNode;
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2014-01-14 22:57:50 +00:00
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2014-09-19 20:41:13 +00:00
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using edash_packager::MediaInfo;
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2015-06-09 23:58:32 +00:00
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typedef edash_packager::MediaInfo::AudioInfo AudioInfo;
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typedef edash_packager::MediaInfo::VideoInfo VideoInfo;
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2014-01-14 22:57:50 +00:00
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typedef MediaInfo::ContentProtectionXml ContentProtectionXml;
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typedef ContentProtectionXml::AttributeNameValuePair AttributeNameValuePair;
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2013-11-18 21:01:48 +00:00
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2014-09-19 20:41:13 +00:00
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namespace edash_packager {
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2014-05-22 02:16:17 +00:00
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2013-11-18 21:01:48 +00:00
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namespace {
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2014-09-19 20:41:13 +00:00
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std::string RangeToString(const Range& range) {
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2013-11-18 21:01:48 +00:00
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return base::Uint64ToString(range.begin()) + "-" +
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base::Uint64ToString(range.end());
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}
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2014-05-22 02:16:17 +00:00
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bool PopulateSegmentTimeline(const std::list<SegmentInfo>& segment_infos,
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XmlNode* segment_timeline) {
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for (std::list<SegmentInfo>::const_iterator it = segment_infos.begin();
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it != segment_infos.end();
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++it) {
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2014-10-03 05:17:54 +00:00
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XmlNode s_element("S");
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s_element.SetIntegerAttribute("t", it->start_time);
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s_element.SetIntegerAttribute("d", it->duration);
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2014-05-22 02:16:17 +00:00
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if (it->repeat > 0)
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2014-10-03 05:17:54 +00:00
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s_element.SetIntegerAttribute("r", it->repeat);
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2014-05-22 02:16:17 +00:00
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2014-10-03 05:17:54 +00:00
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CHECK(segment_timeline->AddChild(s_element.PassScopedPtr()));
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2014-05-22 02:16:17 +00:00
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}
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return true;
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}
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2013-11-18 21:01:48 +00:00
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} // namespace
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namespace xml {
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XmlNode::XmlNode(const char* name) : node_(xmlNewNode(NULL, BAD_CAST name)) {
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DCHECK(name);
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DCHECK(node_);
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}
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XmlNode::~XmlNode() {}
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bool XmlNode::AddChild(ScopedXmlPtr<xmlNode>::type child) {
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DCHECK(node_);
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DCHECK(child);
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if (!xmlAddChild(node_.get(), child.get()))
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return false;
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// Reaching here means the ownership of |child| transfered to |node_|.
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// Release the pointer so that it doesn't get destructed in this scope.
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2014-03-21 17:26:49 +00:00
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ignore_result(child.release());
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2013-11-18 21:01:48 +00:00
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return true;
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}
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2015-07-15 21:57:47 +00:00
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bool XmlNode::AddElements(const std::vector<Element>& elements) {
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for (size_t element_index = 0; element_index < elements.size();
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++element_index) {
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const Element& child_element = elements[element_index];
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XmlNode child_node(child_element.name.c_str());
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for (std::map<std::string, std::string>::const_iterator attribute_it =
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child_element.attributes.begin();
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attribute_it != child_element.attributes.end(); ++attribute_it) {
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child_node.SetStringAttribute(attribute_it->first.c_str(),
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attribute_it->second);
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}
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// Recursively set children for the child.
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if (!child_node.AddElements(child_element.subelements))
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return false;
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child_node.SetContent(child_element.content);
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if (!xmlAddChild(node_.get(), child_node.GetRawPtr())) {
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LOG(ERROR) << "Failed to set child " << child_element.name
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<< " to parent element "
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<< reinterpret_cast<const char*>(node_->name);
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return false;
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}
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// Reaching here means the ownership of |child_node| transfered to |node_|.
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// Release the pointer so that it doesn't get destructed in this scope.
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ignore_result(child_node.Release());
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}
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return true;
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}
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2013-11-18 21:01:48 +00:00
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void XmlNode::SetStringAttribute(const char* attribute_name,
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const std::string& attribute) {
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DCHECK(node_);
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DCHECK(attribute_name);
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2014-05-22 02:16:17 +00:00
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xmlSetProp(node_.get(), BAD_CAST attribute_name, BAD_CAST attribute.c_str());
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2013-11-18 21:01:48 +00:00
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}
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2014-09-30 21:52:21 +00:00
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void XmlNode::SetIntegerAttribute(const char* attribute_name, uint64_t number) {
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2013-11-18 21:01:48 +00:00
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DCHECK(node_);
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DCHECK(attribute_name);
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2014-05-22 02:16:17 +00:00
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xmlSetProp(node_.get(),
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2013-11-18 21:01:48 +00:00
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BAD_CAST attribute_name,
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BAD_CAST (base::Uint64ToString(number).c_str()));
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}
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2013-12-17 23:08:14 +00:00
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void XmlNode::SetFloatingPointAttribute(const char* attribute_name,
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double number) {
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DCHECK(node_);
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DCHECK(attribute_name);
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2014-05-22 02:16:17 +00:00
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xmlSetProp(node_.get(),
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2013-12-17 23:08:14 +00:00
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BAD_CAST attribute_name,
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BAD_CAST (base::DoubleToString(number).c_str()));
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}
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2014-09-30 21:52:21 +00:00
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void XmlNode::SetId(uint32_t id) {
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2013-12-17 23:08:14 +00:00
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SetIntegerAttribute("id", id);
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2013-11-18 21:01:48 +00:00
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}
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void XmlNode::SetContent(const std::string& content) {
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DCHECK(node_);
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xmlNodeSetContent(node_.get(), BAD_CAST content.c_str());
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}
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ScopedXmlPtr<xmlNode>::type XmlNode::PassScopedPtr() {
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2015-01-27 22:35:01 +00:00
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DVLOG(2) << "Passing node_.";
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2013-11-18 21:01:48 +00:00
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DCHECK(node_);
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return node_.Pass();
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}
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xmlNodePtr XmlNode::Release() {
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2015-01-27 22:35:01 +00:00
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DVLOG(2) << "Releasing node_.";
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2013-11-18 21:01:48 +00:00
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DCHECK(node_);
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return node_.release();
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}
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xmlNodePtr XmlNode::GetRawPtr() {
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return node_.get();
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}
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RepresentationBaseXmlNode::RepresentationBaseXmlNode(const char* name)
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: XmlNode(name) {}
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RepresentationBaseXmlNode::~RepresentationBaseXmlNode() {}
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bool RepresentationBaseXmlNode::AddContentProtectionElements(
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const std::list<ContentProtectionElement>& content_protection_elements) {
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std::list<ContentProtectionElement>::const_iterator content_protection_it =
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content_protection_elements.begin();
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for (; content_protection_it != content_protection_elements.end();
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++content_protection_it) {
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if (!AddContentProtectionElement(*content_protection_it))
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return false;
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}
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return true;
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}
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bool RepresentationBaseXmlNode::AddContentProtectionElement(
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const ContentProtectionElement& content_protection_element) {
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XmlNode content_protection_node("ContentProtection");
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2015-07-15 21:57:47 +00:00
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// @value is an optional attribute.
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if (!content_protection_element.value.empty()) {
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content_protection_node.SetStringAttribute(
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"value", content_protection_element.value);
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}
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2013-11-18 21:01:48 +00:00
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content_protection_node.SetStringAttribute(
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"schemeIdUri", content_protection_element.scheme_id_uri);
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typedef std::map<std::string, std::string> AttributesMapType;
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const AttributesMapType& additional_attributes =
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content_protection_element.additional_attributes;
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AttributesMapType::const_iterator attributes_it =
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additional_attributes.begin();
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for (; attributes_it != additional_attributes.end(); ++attributes_it) {
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content_protection_node.SetStringAttribute(attributes_it->first.c_str(),
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attributes_it->second);
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}
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2015-07-15 21:57:47 +00:00
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if (!content_protection_node.AddElements(
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content_protection_element.subelements)) {
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return false;
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}
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2013-11-18 21:01:48 +00:00
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return AddChild(content_protection_node.PassScopedPtr());
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}
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AdaptationSetXmlNode::AdaptationSetXmlNode()
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: RepresentationBaseXmlNode("AdaptationSet") {}
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AdaptationSetXmlNode::~AdaptationSetXmlNode() {}
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2015-06-26 23:00:41 +00:00
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void AdaptationSetXmlNode::AddRoleElement(const std::string& scheme_id_uri,
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const std::string& value) {
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XmlNode role("Role");
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role.SetStringAttribute("schemeIdUri", scheme_id_uri);
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role.SetStringAttribute("value", value);
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AddChild(role.PassScopedPtr());
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}
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2013-11-18 21:01:48 +00:00
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RepresentationXmlNode::RepresentationXmlNode()
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: RepresentationBaseXmlNode("Representation") {}
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RepresentationXmlNode::~RepresentationXmlNode() {}
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2015-06-09 23:58:32 +00:00
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bool RepresentationXmlNode::AddVideoInfo(const VideoInfo& video_info) {
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if (!video_info.has_width() || !video_info.has_height()) {
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LOG(ERROR) << "Missing width or height for adding a video info.";
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return false;
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2013-11-18 21:01:48 +00:00
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}
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2015-06-30 00:21:05 +00:00
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if (video_info.has_pixel_width() && video_info.has_pixel_height()) {
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SetStringAttribute("sar", base::IntToString(video_info.pixel_width()) +
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":" +
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base::IntToString(video_info.pixel_height()));
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}
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2015-06-09 23:58:32 +00:00
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SetIntegerAttribute("width", video_info.width());
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SetIntegerAttribute("height", video_info.height());
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2015-06-09 22:29:14 +00:00
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SetStringAttribute("frameRate",
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base::IntToString(video_info.time_scale()) + "/" +
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base::IntToString(video_info.frame_duration()));
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2013-11-18 21:01:48 +00:00
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return true;
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}
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2015-06-09 23:58:32 +00:00
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bool RepresentationXmlNode::AddAudioInfo(const AudioInfo& audio_info) {
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if (!AddAudioChannelInfo(audio_info))
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2013-11-18 21:01:48 +00:00
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return false;
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2015-06-09 23:58:32 +00:00
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AddAudioSamplingRateInfo(audio_info);
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2013-11-18 21:01:48 +00:00
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return true;
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}
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bool RepresentationXmlNode::AddVODOnlyInfo(const MediaInfo& media_info) {
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2014-01-29 00:03:19 +00:00
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if (media_info.has_media_file_name()) {
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XmlNode base_url("BaseURL");
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base_url.SetContent(media_info.media_file_name());
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if (!AddChild(base_url.PassScopedPtr()))
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return false;
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}
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2013-11-18 21:01:48 +00:00
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const bool need_segment_base = media_info.has_index_range() ||
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2013-12-17 23:08:14 +00:00
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media_info.has_init_range() ||
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media_info.has_reference_time_scale();
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2013-11-18 21:01:48 +00:00
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if (need_segment_base) {
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XmlNode segment_base("SegmentBase");
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if (media_info.has_index_range()) {
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segment_base.SetStringAttribute("indexRange",
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RangeToString(media_info.index_range()));
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}
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2013-12-17 23:08:14 +00:00
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if (media_info.has_reference_time_scale()) {
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segment_base.SetIntegerAttribute("timescale",
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media_info.reference_time_scale());
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}
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2013-11-18 21:01:48 +00:00
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if (media_info.has_init_range()) {
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XmlNode initialization("Initialization");
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initialization.SetStringAttribute("range",
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RangeToString(media_info.init_range()));
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if (!segment_base.AddChild(initialization.PassScopedPtr()))
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return false;
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}
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if (!AddChild(segment_base.PassScopedPtr()))
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return false;
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}
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2013-12-17 23:08:14 +00:00
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if (media_info.has_media_duration_seconds()) {
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2013-11-18 21:01:48 +00:00
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// Adding 'duration' attribute, so that this information can be used when
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// generating one MPD file. This should be removed from the final MPD.
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2013-12-17 23:08:14 +00:00
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SetFloatingPointAttribute("duration", media_info.media_duration_seconds());
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2013-11-18 21:01:48 +00:00
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}
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return true;
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}
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2014-05-22 02:16:17 +00:00
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bool RepresentationXmlNode::AddLiveOnlyInfo(
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const MediaInfo& media_info,
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2014-05-27 22:21:42 +00:00
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const std::list<SegmentInfo>& segment_infos,
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2014-09-30 21:52:21 +00:00
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uint32_t start_number) {
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2014-05-22 02:16:17 +00:00
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XmlNode segment_template("SegmentTemplate");
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if (media_info.has_reference_time_scale()) {
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segment_template.SetIntegerAttribute("timescale",
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media_info.reference_time_scale());
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}
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if (media_info.has_init_segment_name()) {
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// The spec does not allow '$Number$' and '$Time$' in initialization
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// attribute.
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// TODO(rkuroiwa, kqyang): Swap this check out with a better check. These
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// templates allow formatting as well.
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const std::string& init_segment_name = media_info.init_segment_name();
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if (init_segment_name.find("$Number$") != std::string::npos ||
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init_segment_name.find("$Time$") != std::string::npos) {
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LOG(ERROR) << "$Number$ and $Time$ cannot be used for "
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"SegmentTemplate@initialization";
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return false;
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}
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segment_template.SetStringAttribute("initialization",
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media_info.init_segment_name());
|
|
|
|
}
|
|
|
|
|
2014-05-27 22:21:42 +00:00
|
|
|
if (media_info.has_segment_template()) {
|
2014-05-22 02:16:17 +00:00
|
|
|
segment_template.SetStringAttribute("media", media_info.segment_template());
|
|
|
|
|
2014-05-27 22:21:42 +00:00
|
|
|
// TODO(rkuroiwa): Need a better check. $$Number is legitimate but not a
|
|
|
|
// template.
|
|
|
|
if (media_info.segment_template().find("$Number") != std::string::npos) {
|
|
|
|
DCHECK_GE(start_number, 1u);
|
|
|
|
segment_template.SetIntegerAttribute("startNumber", start_number);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-05-22 02:16:17 +00:00
|
|
|
// TODO(rkuroiwa): Find out when a live MPD doesn't require SegmentTimeline.
|
|
|
|
XmlNode segment_timeline("SegmentTimeline");
|
|
|
|
|
|
|
|
return PopulateSegmentTimeline(segment_infos, &segment_timeline) &&
|
|
|
|
segment_template.AddChild(segment_timeline.PassScopedPtr()) &&
|
|
|
|
AddChild(segment_template.PassScopedPtr());
|
|
|
|
}
|
|
|
|
|
2015-06-09 23:58:32 +00:00
|
|
|
bool RepresentationXmlNode::AddAudioChannelInfo(const AudioInfo& audio_info) {
|
|
|
|
const uint32_t num_channels = audio_info.num_channels();
|
|
|
|
XmlNode audio_channel_config("AudioChannelConfiguration");
|
|
|
|
const char kAudioChannelConfigScheme[] =
|
|
|
|
"urn:mpeg:dash:23003:3:audio_channel_configuration:2011";
|
|
|
|
audio_channel_config.SetStringAttribute("schemeIdUri",
|
|
|
|
kAudioChannelConfigScheme);
|
|
|
|
audio_channel_config.SetIntegerAttribute("value", num_channels);
|
2013-11-18 21:01:48 +00:00
|
|
|
|
2015-06-09 23:58:32 +00:00
|
|
|
return AddChild(audio_channel_config.PassScopedPtr());
|
2013-11-18 21:01:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// MPD expects one number for sampling frequency, or if it is a range it should
|
|
|
|
// be space separated.
|
|
|
|
void RepresentationXmlNode::AddAudioSamplingRateInfo(
|
2015-06-09 23:58:32 +00:00
|
|
|
const AudioInfo& audio_info) {
|
|
|
|
if (audio_info.has_sampling_frequency())
|
|
|
|
SetIntegerAttribute("audioSamplingRate", audio_info.sampling_frequency());
|
2013-11-18 21:01:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
} // namespace xml
|
2014-09-19 20:41:13 +00:00
|
|
|
} // namespace edash_packager
|