зеркало из https://github.com/mozilla/gecko-dev.git
61 строка
2.1 KiB
C
61 строка
2.1 KiB
C
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MediaContentType_h_
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#define MediaContentType_h_
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#include "mozilla/Maybe.h"
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#include "nsString.h"
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namespace mozilla {
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// Structure containing pre-parsed content type parameters, e.g.:
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// MIME type, optional codecs, etc.
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class MediaContentType
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{
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public:
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// Parse UTF16 string to extract parameters.
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explicit MediaContentType(const nsAString& aType);
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// Parse UTF8 string to extract parameters.
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explicit MediaContentType(const nsACString& aType);
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bool IsValid() const { return !GetMIMEType().IsEmpty(); }
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// MIME type. Empty if construction arguments could not be parsed.
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const nsACString& GetMIMEType() const { return mMIMEType; }
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// Was there an explicit 'codecs' parameter provided?
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bool HaveCodecs() const { return mHaveCodecs; }
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// Codecs. May be empty if not provided or explicitly provided as empty.
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const nsAString& GetCodecs() const { return mCodecs; }
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// Sizes and rates.
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Maybe<int32_t> GetWidth() const { return GetMaybeNumber(mWidth); }
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Maybe<int32_t> GetHeight() const { return GetMaybeNumber(mHeight); }
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Maybe<int32_t> GetFramerate() const { return GetMaybeNumber(mFramerate); }
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Maybe<int32_t> GetBitrate() const { return GetMaybeNumber(mBitrate); }
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private:
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void Populate(const nsAString& aType);
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Maybe<int32_t> GetMaybeNumber(int32_t aNumber) const
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{
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return (aNumber < 0) ? Maybe<int32_t>(Nothing()) : Some(int32_t(aNumber));
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}
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nsCString mMIMEType; // UTF8 MIME type. Empty if parsing failed.
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bool mHaveCodecs; // If false, mCodecs must be empty.
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nsString mCodecs;
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int32_t mWidth; // -1 if not provided.
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int32_t mHeight; // -1 if not provided.
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int32_t mFramerate; // -1 if not provided.
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int32_t mBitrate; // -1 if not provided.
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};
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} // namespace mozilla
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#endif // MediaContentType_h_
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