80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
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// Copyright 2020 Google LLC. 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 PACKAGER_MEDIA_DVB_SUBTITLE_COMPOSER_H_
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#define PACKAGER_MEDIA_DVB_SUBTITLE_COMPOSER_H_
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#include <memory>
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#include <unordered_map>
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#include <vector>
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#include "packager/base/macros.h"
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#include "packager/media/base/text_sample.h"
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#include "packager/media/formats/dvb/dvb_image.h"
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namespace shaka {
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namespace media {
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/// Holds pixel/caption data for a single DVB-sub page. This composes
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/// multiple objects and creates TextSample objects from it.
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class SubtitleComposer {
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public:
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SubtitleComposer();
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~SubtitleComposer();
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DISALLOW_COPY_AND_ASSIGN(SubtitleComposer);
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void SetDisplaySize(uint16_t width, uint16_t height);
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bool SetRegionPosition(uint8_t region_id, uint16_t x, uint16_t y);
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bool SetRegionInfo(uint8_t region_id,
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uint8_t color_space_id,
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uint16_t width,
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uint16_t height);
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bool SetObjectInfo(uint16_t object_id,
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uint8_t region_id,
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uint16_t x,
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uint16_t y,
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int default_color_code);
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DvbImageColorSpace* GetColorSpace(uint8_t color_space_id);
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DvbImageColorSpace* GetColorSpaceForObject(uint16_t object_id);
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DvbImageBuilder* GetObjectImage(uint16_t object_id);
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bool GetSamples(int64_t start,
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int64_t end,
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std::vector<std::shared_ptr<TextSample>>* samples) const;
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void ClearObjects();
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private:
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struct RegionInfo {
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DvbImageColorSpace* color_space = nullptr;
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uint16_t x = 0;
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uint16_t y = 0;
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uint16_t width = 0;
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uint16_t height = 0;
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};
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struct ObjectInfo {
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RegionInfo* region = nullptr;
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int default_color_code = -1;
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uint16_t x = 0;
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uint16_t y = 0;
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};
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// Maps of IDs to their respective object.
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std::unordered_map<uint8_t, RegionInfo> regions_;
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std::unordered_map<uint8_t, DvbImageColorSpace> color_spaces_;
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std::unordered_map<uint16_t, ObjectInfo> objects_;
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std::unordered_map<uint16_t, DvbImageBuilder> images_; // Uses object_id.
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uint16_t display_width_;
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uint16_t display_height_;
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};
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} // namespace media
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} // namespace shaka
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#endif // PACKAGER_MEDIA_DVB_SUBTITLE_COMPOSER_H_
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