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https://github.com/shaka-project/shaka-packager.git
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51e25b56ee
This change introduces support for signaling CEA-608 and CEA-708 closed captions in DASH. (Equivalent of https://github.com/shaka-project/shaka-packager/pull/1532) It reuses the existing --closed_captions command-line flag. Note that some options (name, autoselect, and default) are not used for DASH. ``` --closed_captions 'channel=CC1,lang=fra;channel=CC2,lang=eng;channel=SERVICE1,lang=eng' ``` For Dash this adds an Accessibility tag in each video AdaptationSet. Example output : ``` <AdaptationSet id="1" contentType="video" ....> <Accessibility schemeIdUri="urn:scte:dash:cc:cea-608:2015" value="CC1=fra"/> <Accessibility schemeIdUri="urn:scte:dash:cc:cea-608:2015" value="CC2=eng"/> <Accessibility schemeIdUri="urn:scte:dash:cc:cea-708:2015" value="1=lang:eng"/> ``` HLS changes : * We force the language to 2 characters to be consistent with the language of the audio files, for example. * closed_captions is now in packaging_params
31 lines
803 B
C++
31 lines
803 B
C++
// Copyright 2024 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_PUBLIC_CEA_CAPTION_H_
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#define PACKAGER_PUBLIC_CEA_CAPTION_H_
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#include <string>
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namespace shaka {
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/// CEA caption description.
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struct CeaCaption {
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/// The display name of the caption.
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std::string name;
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/// The language of the caption.
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std::string language;
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/// The channel of the caption, e.g. "CC1", "SERVICE2".
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std::string channel;
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/// True if this is the default caption.
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bool is_default = false;
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/// True if this caption should be autoselected.
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bool autoselect = true;
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};
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} // namespace shaka
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#endif // PACKAGER_PUBLIC_CEA_CAPTION_H_
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