126 lines
4.3 KiB
C++
126 lines
4.3 KiB
C++
/*
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* Copyright (C) 2005 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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//
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// Pixel formats used across the system.
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// These formats might not all be supported by all renderers, for instance
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// skia or SurfaceFlinger are not required to support all of these formats
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// (either as source or destination)
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// XXX: we should consolidate these formats and skia's
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#ifndef UI_PIXELFORMAT_H
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#define UI_PIXELFORMAT_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <pixelflinger/format.h>
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namespace android {
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enum {
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//
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// these constants need to match those
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// in graphics/PixelFormat.java & pixelflinger/format.h
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//
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PIXEL_FORMAT_UNKNOWN = 0,
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PIXEL_FORMAT_NONE = 0,
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// logical pixel formats used by the SurfaceFlinger -----------------------
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PIXEL_FORMAT_CUSTOM = -4,
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// Custom pixel-format described by a PixelFormatInfo structure
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PIXEL_FORMAT_TRANSLUCENT = -3,
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// System chooses a format that supports translucency (many alpha bits)
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PIXEL_FORMAT_TRANSPARENT = -2,
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// System chooses a format that supports transparency
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// (at least 1 alpha bit)
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PIXEL_FORMAT_OPAQUE = -1,
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// System chooses an opaque format (no alpha bits required)
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// real pixel formats supported for rendering -----------------------------
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PIXEL_FORMAT_RGBA_8888 = GGL_PIXEL_FORMAT_RGBA_8888, // 4x8-bit RGBA
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PIXEL_FORMAT_RGBX_8888 = GGL_PIXEL_FORMAT_RGBX_8888, // 4x8-bit RGB0
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PIXEL_FORMAT_RGB_888 = GGL_PIXEL_FORMAT_RGB_888, // 3x8-bit RGB
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PIXEL_FORMAT_RGB_565 = GGL_PIXEL_FORMAT_RGB_565, // 16-bit RGB
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PIXEL_FORMAT_BGRA_8888 = GGL_PIXEL_FORMAT_BGRA_8888, // 4x8-bit BGRA
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PIXEL_FORMAT_RGBA_5551 = GGL_PIXEL_FORMAT_RGBA_5551, // 16-bit ARGB
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PIXEL_FORMAT_RGBA_4444 = GGL_PIXEL_FORMAT_RGBA_4444, // 16-bit ARGB
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PIXEL_FORMAT_A_8 = GGL_PIXEL_FORMAT_A_8, // 8-bit A
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PIXEL_FORMAT_L_8 = GGL_PIXEL_FORMAT_L_8, // 8-bit L (R=G=B=L)
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PIXEL_FORMAT_LA_88 = GGL_PIXEL_FORMAT_LA_88, // 16-bit LA
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PIXEL_FORMAT_RGB_332 = GGL_PIXEL_FORMAT_RGB_332, // 8-bit RGB
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PIXEL_FORMAT_YCbCr_422_SP= GGL_PIXEL_FORMAT_YCbCr_422_SP,
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PIXEL_FORMAT_YCbCr_420_SP= GGL_PIXEL_FORMAT_YCbCr_420_SP,
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PIXEL_FORMAT_YCbCr_422_P = GGL_PIXEL_FORMAT_YCbCr_422_P,
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PIXEL_FORMAT_YCbCr_420_P = GGL_PIXEL_FORMAT_YCbCr_420_P,
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PIXEL_FORMAT_YCbCr_422_I = GGL_PIXEL_FORMAT_YCbCr_422_I,
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PIXEL_FORMAT_YCbCr_420_I = GGL_PIXEL_FORMAT_YCbCr_420_I,
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// New formats can be added if they're also defined in
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// pixelflinger/format.h
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};
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typedef int32_t PixelFormat;
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struct PixelFormatInfo
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{
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enum { // components
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ALPHA = 1,
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RGB = 2,
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RGBA = 3,
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LUMINANCE = 4,
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LUMINANCE_ALPHA = 5,
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Y_CB_CR_SP = 6,
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Y_CB_CR_P = 7,
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Y_CB_CR_I = 8,
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};
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inline PixelFormatInfo() : version(sizeof(PixelFormatInfo)) { }
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size_t getScanlineSize(unsigned int width) const;
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size_t version;
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PixelFormat format;
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size_t bytesPerPixel;
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size_t bitsPerPixel;
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uint8_t h_alpha;
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uint8_t l_alpha;
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uint8_t h_red;
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uint8_t l_red;
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uint8_t h_green;
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uint8_t l_green;
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uint8_t h_blue;
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uint8_t l_blue;
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uint8_t components;
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uint8_t reserved0[3];
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uint32_t reserved1;
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};
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// Consider caching the results of these functions are they're not
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// guaranteed to be fast.
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ssize_t bytesPerPixel(PixelFormat format);
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ssize_t bitsPerPixel(PixelFormat format);
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status_t getPixelFormatInfo(PixelFormat format, PixelFormatInfo* info);
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}; // namespace android
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#endif // UI_PIXELFORMAT_H
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