src/gbm/main/gbm.h

   1 /*
   2  * Copyright © 2011 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  26  */
  27
  28 #ifndef _GBM_H_
  29 #define _GBM_H_
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35
  36 #define __GBM__ 1
  37
  38 #include <stdint.h>
  39
  40 /**
  41  * \file gbm.h
  42  * \brief Generic Buffer Manager
  43  */
  44
  45 struct gbm_device;
  46 struct gbm_bo;
  47
  48 /**
  49  * \mainpage The Generic Buffer Manager
  50  *
  51  * This module provides an abstraction that the caller can use to request a
  52  * buffer from the underlying memory management system for the platform.
  53  *
  54  * This allows the creation of portable code whilst still allowing access to
  55  * the underlying memory manager.
  56  */
  57
  58 /**
  59  * Abstraction representing the handle to a buffer allocated by the
  60  * manager
  61  */
  62 union gbm_bo_handle {
  63    void *ptr;
  64    int32_t s32;
  65    uint32_t u32;
  66    int64_t s64;
  67    uint64_t u64;
  68 };
  69
  70 /** Format of the allocated buffer */
  71 enum gbm_bo_format {
  72    /** RGB with 8 bits per channel in a 32 bit value */
  73    GBM_BO_FORMAT_XRGB8888,
  74    /** ARGB with 8 bits per channel in a 32 bit value */
  75    GBM_BO_FORMAT_ARGB8888
  76 };
  77
  78 #define __gbm_fourcc_code(a,b,c,d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
  79                               ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
  80
  81 #define GBM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
  82
  83 /* color index */
  84 #define GBM_FORMAT_C8           __gbm_fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
  85
  86 /* 8 bpp RGB */
  87 #define GBM_FORMAT_RGB332       __gbm_fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
  88 #define GBM_FORMAT_BGR233       __gbm_fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
  89
  90 /* 16 bpp RGB */
  91 #define GBM_FORMAT_XRGB4444     __gbm_fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
  92 #define GBM_FORMAT_XBGR4444     __gbm_fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
  93 #define GBM_FORMAT_RGBX4444     __gbm_fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
  94 #define GBM_FORMAT_BGRX4444     __gbm_fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
  95
  96 #define GBM_FORMAT_ARGB4444     __gbm_fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
  97 #define GBM_FORMAT_ABGR4444     __gbm_fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
  98 #define GBM_FORMAT_RGBA4444     __gbm_fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
  99 #define GBM_FORMAT_BGRA4444     __gbm_fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
 100
 101 #define GBM_FORMAT_XRGB1555     __gbm_fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
 102 #define GBM_FORMAT_XBGR1555     __gbm_fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
 103 #define GBM_FORMAT_RGBX5551     __gbm_fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
 104 #define GBM_FORMAT_BGRX5551     __gbm_fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
 105
 106 #define GBM_FORMAT_ARGB1555     __gbm_fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
 107 #define GBM_FORMAT_ABGR1555     __gbm_fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
 108 #define GBM_FORMAT_RGBA5551     __gbm_fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
 109 #define GBM_FORMAT_BGRA5551     __gbm_fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
 110
 111 #define GBM_FORMAT_RGB565       __gbm_fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
 112 #define GBM_FORMAT_BGR565       __gbm_fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
 113
 114 /* 24 bpp RGB */
 115 #define GBM_FORMAT_RGB888       __gbm_fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
 116 #define GBM_FORMAT_BGR888       __gbm_fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
 117
 118 /* 32 bpp RGB */
 119 #define GBM_FORMAT_XRGB8888     __gbm_fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
 120 #define GBM_FORMAT_XBGR8888     __gbm_fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
 121 #define GBM_FORMAT_RGBX8888     __gbm_fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
 122 #define GBM_FORMAT_BGRX8888     __gbm_fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
 123
 124 #define GBM_FORMAT_ARGB8888     __gbm_fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
 125 #define GBM_FORMAT_ABGR8888     __gbm_fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
 126 #define GBM_FORMAT_RGBA8888     __gbm_fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
 127 #define GBM_FORMAT_BGRA8888     __gbm_fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
 128
 129 #define GBM_FORMAT_XRGB2101010  __gbm_fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
 130 #define GBM_FORMAT_XBGR2101010  __gbm_fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
 131 #define GBM_FORMAT_RGBX1010102  __gbm_fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
 132 #define GBM_FORMAT_BGRX1010102  __gbm_fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
 133
 134 #define GBM_FORMAT_ARGB2101010  __gbm_fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
 135 #define GBM_FORMAT_ABGR2101010  __gbm_fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
 136 #define GBM_FORMAT_RGBA1010102  __gbm_fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
 137 #define GBM_FORMAT_BGRA1010102  __gbm_fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
 138
 139 /* packed YCbCr */
 140 #define GBM_FORMAT_YUYV         __gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
 141 #define GBM_FORMAT_YVYU         __gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
 142 #define GBM_FORMAT_UYVY         __gbm_fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
 143 #define GBM_FORMAT_VYUY         __gbm_fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
 144
 145 #define GBM_FORMAT_AYUV         __gbm_fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
 146
 147 /*
 148  * 2 plane YCbCr
 149  * index 0 = Y plane, [7:0] Y
 150  * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
 151  * or
 152  * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
 153  */
 154 #define GBM_FORMAT_NV12         __gbm_fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
 155 #define GBM_FORMAT_NV21         __gbm_fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
 156 #define GBM_FORMAT_NV16         __gbm_fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
 157 #define GBM_FORMAT_NV61         __gbm_fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
 158
 159 /*
 160  * 3 plane YCbCr
 161  * index 0: Y plane, [7:0] Y
 162  * index 1: Cb plane, [7:0] Cb
 163  * index 2: Cr plane, [7:0] Cr
 164  * or
 165  * index 1: Cr plane, [7:0] Cr
 166  * index 2: Cb plane, [7:0] Cb
 167  */
 168 #define GBM_FORMAT_YUV410       __gbm_fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
 169 #define GBM_FORMAT_YVU410       __gbm_fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
 170 #define GBM_FORMAT_YUV411       __gbm_fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
 171 #define GBM_FORMAT_YVU411       __gbm_fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
 172 #define GBM_FORMAT_YUV420       __gbm_fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
 173 #define GBM_FORMAT_YVU420       __gbm_fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
 174 #define GBM_FORMAT_YUV422       __gbm_fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
 175 #define GBM_FORMAT_YVU422       __gbm_fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
 176 #define GBM_FORMAT_YUV444       __gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
 177 #define GBM_FORMAT_YVU444       __gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
 178
 179
 180 /**
 181  * Flags to indicate the intended use for the buffer - these are passed into
 182  * gbm_bo_create(). The caller must set the union of all the flags that are
 183  * appropriate
 184  *
 185  * \sa Use gbm_device_is_format_supported() to check if the combination of format
 186  * and use flags are supported
 187  */
 188 enum gbm_bo_flags {
 189    /**
 190     * Buffer is going to be presented to the screen using an API such as KMS
 191     */
 192    GBM_BO_USE_SCANOUT      = (1 << 0),
 193    /**
 194     * Buffer is going to be used as cursor - the dimensions for the buffer
 195     * must be 64x64 if this flag is passed.
 196     */
 197    GBM_BO_USE_CURSOR_64X64 = (1 << 1),
 198    /**
 199     * Buffer is to be used for rendering - for example it is going to be used
 200     * as the storage for a color buffer
 201     */
 202    GBM_BO_USE_RENDERING    = (1 << 2),
 203 };
 204
 205 int
 206 gbm_device_get_fd(struct gbm_device *gbm);
 207
 208 const char *
 209 gbm_device_get_backend_name(struct gbm_device *gbm);
 210
 211 int
 212 gbm_device_is_format_supported(struct gbm_device *gbm,
 213                                uint32_t format, uint32_t usage);
 214
 215 void
 216 gbm_device_destroy(struct gbm_device *gbm);
 217
 218 struct gbm_device *
 219 gbm_create_device(int fd);
 220
 221 struct gbm_bo *
 222 gbm_bo_create(struct gbm_device *gbm,
 223               uint32_t width, uint32_t height,
 224               uint32_t format, uint32_t flags);
 225
 226 struct gbm_bo *
 227 gbm_bo_create_from_egl_image(struct gbm_device *gbm,
 228                              void *egl_dpy, void *egl_img,
 229                              uint32_t width, uint32_t height,
 230                              uint32_t usage);
 231
 232 uint32_t
 233 gbm_bo_get_width(struct gbm_bo *bo);
 234
 235 uint32_t
 236 gbm_bo_get_height(struct gbm_bo *bo);
 237
 238 uint32_t
 239 gbm_bo_get_pitch(struct gbm_bo *bo);
 240
 241 uint32_t
 242 gbm_bo_get_format(struct gbm_bo *bo);
 243
 244 union gbm_bo_handle
 245 gbm_bo_get_handle(struct gbm_bo *bo);
 246
 247 void
 248 gbm_bo_destroy(struct gbm_bo *bo);
 249
 250 #ifdef __cplusplus
 251 }
 252 #endif
 253
 254 #endif