137 lines
5.0 KiB
C++
137 lines
5.0 KiB
C++
// Copyright 2015 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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#ifndef MPD_BASE_DASH_IOP_MPD_NOTIFIER_H_
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#define MPD_BASE_DASH_IOP_MPD_NOTIFIER_H_
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#include "packager/mpd/base/mpd_notifier.h"
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#include <list>
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#include <map>
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#include <string>
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#include <vector>
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#include "packager/base/synchronization/lock.h"
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#include "packager/mpd/base/mpd_notifier_util.h"
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#include "packager/mpd/base/mpd_options.h"
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namespace shaka {
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class AdaptationSet;
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class MpdBuilder;
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class Representation;
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/// This class is an MpdNotifier which will try its best to generate a
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/// DASH IF IOPv3 compliant MPD.
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/// e.g.
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/// All <ContentProtection> elements must be right under
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/// <AdaptationSet> and cannot be under <Representation>.
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/// All video Adaptation Sets have Role set to "main".
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class DashIopMpdNotifier : public MpdNotifier {
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public:
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explicit DashIopMpdNotifier(const MpdOptions& mpd_options);
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~DashIopMpdNotifier() override;
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/// None of the methods write out the MPD file until Flush() is called.
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/// @name MpdNotifier implemetation overrides.
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/// @{
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bool Init() override;
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bool NotifyNewContainer(const MediaInfo& media_info, uint32_t* id) override;
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bool NotifySampleDuration(uint32_t container_id,
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uint32_t sample_duration) override;
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bool NotifyNewSegment(uint32_t id,
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uint64_t start_time,
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uint64_t duration,
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uint64_t size) override;
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bool NotifyEncryptionUpdate(uint32_t container_id,
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const std::string& drm_uuid,
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const std::vector<uint8_t>& new_key_id,
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const std::vector<uint8_t>& new_pssh) override;
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bool AddContentProtectionElement(
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uint32_t id,
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const ContentProtectionElement& content_protection_element) override;
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bool Flush() override;
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/// @}
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private:
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friend class DashIopMpdNotifierTest;
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// Maps representation ID to Representation.
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typedef std::map<uint32_t, Representation*> RepresentationMap;
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// Checks the protected_content field of media_info and returns a non-null
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// AdaptationSet* for a new Representation.
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// This does not necessarily return a new AdaptationSet. If
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// media_info.protected_content completely matches with an existing
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// AdaptationSet, then it will return the pointer.
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AdaptationSet* GetOrCreateAdaptationSet(const MediaInfo& media_info);
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// Helper function to get a new AdaptationSet and set new AdaptationSet
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// attributes.
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AdaptationSet* NewAdaptationSet(
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const MediaInfo& media_info,
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const std::list<AdaptationSet*>& adaptation_sets);
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// Gets the original AdaptationSet which the trick play video belongs
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// to and returns the id of the original adapatation set.
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// It is assumed that the corresponding AdaptationSet has been created before
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// the trick play AdaptationSet.
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// Returns true if main_adaptation_id is found, otherwise false;
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bool FindOriginalAdaptationSetForTrickPlay(
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const MediaInfo& media_info,
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uint32_t* original_adaptation_set_id);
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// Testing only method. Returns a pointer to MpdBuilder.
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MpdBuilder* MpdBuilderForTesting() const {
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return mpd_builder_.get();
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}
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// Testing only method. Sets mpd_builder_.
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void SetMpdBuilderForTesting(std::unique_ptr<MpdBuilder> mpd_builder) {
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mpd_builder_ = std::move(mpd_builder);
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}
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std::map<std::string, std::list<AdaptationSet*>> adaptation_set_list_map_;
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RepresentationMap representation_map_;
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// Tracks ProtectedContent in AdaptationSet.
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class ProtectedAdaptationSetMap {
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public:
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ProtectedAdaptationSetMap() = default;
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// Register the |adaptation_set| with associated |media_info| in the map.
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void Register(const AdaptationSet& adaptation_set,
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const MediaInfo& media_info);
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// Check if the protected content associated with |adaptation_set| matches
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// with the one in |media_info|.
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bool Match(const AdaptationSet& adaptation_set,
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const MediaInfo& media_info);
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// Check if the two adaptation sets are switchable.
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bool Switchable(const AdaptationSet& adaptation_set_a,
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const AdaptationSet& adaptation_set_b);
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private:
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ProtectedAdaptationSetMap(const ProtectedAdaptationSetMap&) = delete;
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ProtectedAdaptationSetMap& operator=(const ProtectedAdaptationSetMap&) =
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delete;
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// Maps AdaptationSet ID to ProtectedContent.
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std::map<uint32_t, MediaInfo::ProtectedContent> protected_content_map_;
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};
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ProtectedAdaptationSetMap protected_adaptation_set_map_;
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// MPD output path.
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std::string output_path_;
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std::unique_ptr<MpdBuilder> mpd_builder_;
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base::Lock lock_;
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// Maps Representation ID to AdaptationSet. This is for updating the PSSH.
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std::map<uint32_t, AdaptationSet*> representation_id_to_adaptation_set_;
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};
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} // namespace shaka
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#endif // MPD_BASE_DASH_IOP_MPD_NOTIFIER_H_
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