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110 lines
2.8 KiB
110 lines
2.8 KiB
4 months ago
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef AC4_PARSER_H_
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#define AC4_PARSER_H_
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#include <cstdint>
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#include <map>
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#include <string>
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#include <media/stagefright/foundation/ABitReader.h>
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namespace android {
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class AC4Parser {
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public:
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AC4Parser();
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virtual ~AC4Parser() { }
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virtual bool parse() = 0;
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struct AC4Presentation {
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int32_t mChannelMode = -1;
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int32_t mProgramID = -1;
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int32_t mGroupIndex = -1;
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// TS 103 190-1 v1.2.1 4.3.3.8.1
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enum ContentClassifiers {
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kCompleteMain,
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kMusicAndEffects,
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kVisuallyImpaired,
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kHearingImpaired,
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kDialog,
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kCommentary,
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kEmergency,
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kVoiceOver
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};
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uint32_t mContentClassifier = kCompleteMain;
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// ETSI TS 103 190-2 V1.1.1 (2015-09) Table 79: channel_mode
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enum InputChannelMode {
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kChannelMode_Mono,
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kChannelMode_Stereo,
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kChannelMode_3_0,
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kChannelMode_5_0,
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kChannelMode_5_1,
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kChannelMode_7_0_34,
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kChannelMode_7_1_34,
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kChannelMode_7_0_52,
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kChannelMode_7_1_52,
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kChannelMode_7_0_322,
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kChannelMode_7_1_322,
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kChannelMode_7_0_4,
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kChannelMode_7_1_4,
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kChannelMode_9_0_4,
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kChannelMode_9_1_4,
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kChannelMode_22_2,
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kChannelMode_Reserved,
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};
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bool mHasDialogEnhancements = false;
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bool mPreVirtualized = false;
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bool mEnabled = true;
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std::string mLanguage;
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std::string mDescription;
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};
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typedef std::map<uint32_t, AC4Presentation> AC4Presentations;
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const AC4Presentations& getPresentations() const { return mPresentations; }
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protected:
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AC4Presentations mPresentations;
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};
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class AC4DSIParser: public AC4Parser {
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public:
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explicit AC4DSIParser(ABitReader &br);
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virtual ~AC4DSIParser() { }
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bool parse();
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private:
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bool parseSubstreamDSI(uint32_t presentationID, uint32_t substreamID);
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bool parseSubstreamGroupDSI(uint32_t presentationID, uint32_t groupID);
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bool parseLanguageTag(uint32_t presentationID, uint32_t substreamID);
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bool parseBitrateDsi();
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uint64_t mDSISize;
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ABitReader& mBitReader;
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};
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};
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#endif // AC4_PARSER_H_
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