зеркало из https://github.com/mozilla/gecko-dev.git
61 строка
2.2 KiB
C
61 строка
2.2 KiB
C
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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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#if !defined(RawStructs_h_)
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#define RawStructs_h_
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static const uint32_t RAW_ID = 0x595556;
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struct nsRawVideo_PRUint24 {
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operator uint32_t() const { return value[2] << 16 | value[1] << 8 | value[0]; }
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nsRawVideo_PRUint24& operator= (const uint32_t& rhs)
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{ value[2] = (rhs & 0x00FF0000) >> 16;
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value[1] = (rhs & 0x0000FF00) >> 8;
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value[0] = (rhs & 0x000000FF);
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return *this; }
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private:
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uint8_t value[3];
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};
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struct RawPacketHeader {
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typedef nsRawVideo_PRUint24 PRUint24;
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uint8_t packetID;
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PRUint24 codecID;
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};
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// This is Arc's draft from wiki.xiph.org/OggYUV
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struct RawVideoHeader {
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typedef nsRawVideo_PRUint24 PRUint24;
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uint8_t headerPacketID; // Header Packet ID (always 0)
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PRUint24 codecID; // Codec identifier (always "YUV")
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uint8_t majorVersion; // Version Major (breaks backwards compat)
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uint8_t minorVersion; // Version Minor (preserves backwards compat)
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uint16_t options; // Bit 1: Color (false = B/W)
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// Bits 2-4: Chroma Pixel Shape
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// Bit 5: 50% horizontal offset for Cr samples
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// Bit 6: 50% vertical ...
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// Bits 7-8: Chroma Blending
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// Bit 9: Packed (false = Planar)
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// Bit 10: Cr Staggered Horizontally
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// Bit 11: Cr Staggered Vertically
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// Bit 12: Unused (format is always little endian)
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// Bit 13: Interlaced (false = Progressive)
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// Bits 14-16: Interlace options (undefined)
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uint8_t alphaChannelBpp;
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uint8_t lumaChannelBpp;
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uint8_t chromaChannelBpp;
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uint8_t colorspace;
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PRUint24 frameWidth;
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PRUint24 frameHeight;
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PRUint24 aspectNumerator;
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PRUint24 aspectDenominator;
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uint32_t framerateNumerator;
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uint32_t framerateDenominator;
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};
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#endif // RawStructs_h_
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