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      1 /*
      2  * Copyright (C) 2005 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 //
     18 
     19 // Pixel formats used across the system.
     20 // These formats might not all be supported by all renderers, for instance
     21 // skia or SurfaceFlinger are not required to support all of these formats
     22 // (either as source or destination)
     23 
     24 
     25 #ifndef UI_PIXELFORMAT_H
     26 #define UI_PIXELFORMAT_H
     27 
     28 #include <stdint.h>
     29 #include <sys/types.h>
     30 #include <utils/Errors.h>
     31 #include <hardware/hardware.h>
     32 
     33 namespace android {
     34 
     35 enum {
     36     //
     37     // these constants need to match those
     38     // in graphics/PixelFormat.java & pixelflinger/format.h
     39     //
     40     PIXEL_FORMAT_UNKNOWN    =   0,
     41     PIXEL_FORMAT_NONE       =   0,
     42 
     43     // logical pixel formats used by the SurfaceFlinger -----------------------
     44     PIXEL_FORMAT_CUSTOM         = -4,
     45         // Custom pixel-format described by a PixelFormatInfo structure
     46 
     47     PIXEL_FORMAT_TRANSLUCENT    = -3,
     48         // System chooses a format that supports translucency (many alpha bits)
     49 
     50     PIXEL_FORMAT_TRANSPARENT    = -2,
     51         // System chooses a format that supports transparency
     52         // (at least 1 alpha bit)
     53 
     54     PIXEL_FORMAT_OPAQUE         = -1,
     55         // System chooses an opaque format (no alpha bits required)
     56 
     57     // real pixel formats supported for rendering -----------------------------
     58 
     59     PIXEL_FORMAT_RGBA_8888   = HAL_PIXEL_FORMAT_RGBA_8888,  // 4x8-bit RGBA
     60     PIXEL_FORMAT_RGBX_8888   = HAL_PIXEL_FORMAT_RGBX_8888,  // 4x8-bit RGB0
     61     PIXEL_FORMAT_RGB_888     = HAL_PIXEL_FORMAT_RGB_888,    // 3x8-bit RGB
     62     PIXEL_FORMAT_RGB_565     = HAL_PIXEL_FORMAT_RGB_565,    // 16-bit RGB
     63     PIXEL_FORMAT_BGRA_8888   = HAL_PIXEL_FORMAT_BGRA_8888,  // 4x8-bit BGRA
     64     PIXEL_FORMAT_RGBA_5551   = 6,                           // 16-bit ARGB
     65     PIXEL_FORMAT_RGBA_4444   = 7,                           // 16-bit ARGB
     66 };
     67 
     68 typedef int32_t PixelFormat;
     69 
     70 ssize_t bytesPerPixel(PixelFormat format);
     71 ssize_t bitsPerPixel(PixelFormat format);
     72 
     73 }; // namespace android
     74 
     75 #endif // UI_PIXELFORMAT_H
     76