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 #define __GBM__ 1
  32
  33 #include <stddef.h>
  34 #include <stdint.h>
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /**
  42  * \file gbm.h
  43  * \brief Generic Buffer Manager
  44  */
  45
  46 struct gbm_device;
  47 struct gbm_bo;
  48 struct gbm_surface;
  49
  50 /**
  51  * \mainpage The Generic Buffer Manager
  52  *
  53  * This module provides an abstraction that the caller can use to request a
  54  * buffer from the underlying memory management system for the platform.
  55  *
  56  * This allows the creation of portable code whilst still allowing access to
  57  * the underlying memory manager.
  58  */
  59
  60 /**
  61  * Abstraction representing the handle to a buffer allocated by the
  62  * manager
  63  */
  64 union gbm_bo_handle {
  65    void *ptr;
  66    int32_t s32;
  67    uint32_t u32;
  68    int64_t s64;
  69    uint64_t u64;
  70 };
  71
  72 /** Format of the allocated buffer */
  73 enum gbm_bo_format {
  74    /** RGB with 8 bits per channel in a 32 bit value */
  75    GBM_BO_FORMAT_XRGB8888,
  76    /** ARGB with 8 bits per channel in a 32 bit value */
  77    GBM_BO_FORMAT_ARGB8888
  78 };
  79
  80 #define __gbm_fourcc_code(a,b,c,d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
  81                               ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
  82
  83 #define GBM_FORMAT_BIG_ENDIAN (1<<31) /* format is big endian instead of little endian */
  84
  85 /* color index */
  86 #define GBM_FORMAT_C8           __gbm_fourcc_code('C', '8', ' ', ' ') /* [7:0] C */
  87
  88 /* 8 bpp RGB */
  89 #define GBM_FORMAT_RGB332       __gbm_fourcc_code('R', 'G', 'B', '8') /* [7:0] R:G:B 3:3:2 */
  90 #define GBM_FORMAT_BGR233       __gbm_fourcc_code('B', 'G', 'R', '8') /* [7:0] B:G:R 2:3:3 */
  91
  92 /* 16 bpp RGB */
  93 #define GBM_FORMAT_XRGB4444     __gbm_fourcc_code('X', 'R', '1', '2') /* [15:0] x:R:G:B 4:4:4:4 little endian */
  94 #define GBM_FORMAT_XBGR4444     __gbm_fourcc_code('X', 'B', '1', '2') /* [15:0] x:B:G:R 4:4:4:4 little endian */
  95 #define GBM_FORMAT_RGBX4444     __gbm_fourcc_code('R', 'X', '1', '2') /* [15:0] R:G:B:x 4:4:4:4 little endian */
  96 #define GBM_FORMAT_BGRX4444     __gbm_fourcc_code('B', 'X', '1', '2') /* [15:0] B:G:R:x 4:4:4:4 little endian */
  97
  98 #define GBM_FORMAT_ARGB4444     __gbm_fourcc_code('A', 'R', '1', '2') /* [15:0] A:R:G:B 4:4:4:4 little endian */
  99 #define GBM_FORMAT_ABGR4444     __gbm_fourcc_code('A', 'B', '1', '2') /* [15:0] A:B:G:R 4:4:4:4 little endian */
 100 #define GBM_FORMAT_RGBA4444     __gbm_fourcc_code('R', 'A', '1', '2') /* [15:0] R:G:B:A 4:4:4:4 little endian */
 101 #define GBM_FORMAT_BGRA4444     __gbm_fourcc_code('B', 'A', '1', '2') /* [15:0] B:G:R:A 4:4:4:4 little endian */
 102
 103 #define GBM_FORMAT_XRGB1555     __gbm_fourcc_code('X', 'R', '1', '5') /* [15:0] x:R:G:B 1:5:5:5 little endian */
 104 #define GBM_FORMAT_XBGR1555     __gbm_fourcc_code('X', 'B', '1', '5') /* [15:0] x:B:G:R 1:5:5:5 little endian */
 105 #define GBM_FORMAT_RGBX5551     __gbm_fourcc_code('R', 'X', '1', '5') /* [15:0] R:G:B:x 5:5:5:1 little endian */
 106 #define GBM_FORMAT_BGRX5551     __gbm_fourcc_code('B', 'X', '1', '5') /* [15:0] B:G:R:x 5:5:5:1 little endian */
 107
 108 #define GBM_FORMAT_ARGB1555     __gbm_fourcc_code('A', 'R', '1', '5') /* [15:0] A:R:G:B 1:5:5:5 little endian */
 109 #define GBM_FORMAT_ABGR1555     __gbm_fourcc_code('A', 'B', '1', '5') /* [15:0] A:B:G:R 1:5:5:5 little endian */
 110 #define GBM_FORMAT_RGBA5551     __gbm_fourcc_code('R', 'A', '1', '5') /* [15:0] R:G:B:A 5:5:5:1 little endian */
 111 #define GBM_FORMAT_BGRA5551     __gbm_fourcc_code('B', 'A', '1', '5') /* [15:0] B:G:R:A 5:5:5:1 little endian */
 112
 113 #define GBM_FORMAT_RGB565       __gbm_fourcc_code('R', 'G', '1', '6') /* [15:0] R:G:B 5:6:5 little endian */
 114 #define GBM_FORMAT_BGR565       __gbm_fourcc_code('B', 'G', '1', '6') /* [15:0] B:G:R 5:6:5 little endian */
 115
 116 /* 24 bpp RGB */
 117 #define GBM_FORMAT_RGB888       __gbm_fourcc_code('R', 'G', '2', '4') /* [23:0] R:G:B little endian */
 118 #define GBM_FORMAT_BGR888       __gbm_fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */
 119
 120 /* 32 bpp RGB */
 121 #define GBM_FORMAT_XRGB8888     __gbm_fourcc_code('X', 'R', '2', '4') /* [31:0] x:R:G:B 8:8:8:8 little endian */
 122 #define GBM_FORMAT_XBGR8888     __gbm_fourcc_code('X', 'B', '2', '4') /* [31:0] x:B:G:R 8:8:8:8 little endian */
 123 #define GBM_FORMAT_RGBX8888     __gbm_fourcc_code('R', 'X', '2', '4') /* [31:0] R:G:B:x 8:8:8:8 little endian */
 124 #define GBM_FORMAT_BGRX8888     __gbm_fourcc_code('B', 'X', '2', '4') /* [31:0] B:G:R:x 8:8:8:8 little endian */
 125
 126 #define GBM_FORMAT_ARGB8888     __gbm_fourcc_code('A', 'R', '2', '4') /* [31:0] A:R:G:B 8:8:8:8 little endian */
 127 #define GBM_FORMAT_ABGR8888     __gbm_fourcc_code('A', 'B', '2', '4') /* [31:0] A:B:G:R 8:8:8:8 little endian */
 128 #define GBM_FORMAT_RGBA8888     __gbm_fourcc_code('R', 'A', '2', '4') /* [31:0] R:G:B:A 8:8:8:8 little endian */
 129 #define GBM_FORMAT_BGRA8888     __gbm_fourcc_code('B', 'A', '2', '4') /* [31:0] B:G:R:A 8:8:8:8 little endian */
 130
 131 #define GBM_FORMAT_XRGB2101010  __gbm_fourcc_code('X', 'R', '3', '0') /* [31:0] x:R:G:B 2:10:10:10 little endian */
 132 #define GBM_FORMAT_XBGR2101010  __gbm_fourcc_code('X', 'B', '3', '0') /* [31:0] x:B:G:R 2:10:10:10 little endian */
 133 #define GBM_FORMAT_RGBX1010102  __gbm_fourcc_code('R', 'X', '3', '0') /* [31:0] R:G:B:x 10:10:10:2 little endian */
 134 #define GBM_FORMAT_BGRX1010102  __gbm_fourcc_code('B', 'X', '3', '0') /* [31:0] B:G:R:x 10:10:10:2 little endian */
 135
 136 #define GBM_FORMAT_ARGB2101010  __gbm_fourcc_code('A', 'R', '3', '0') /* [31:0] A:R:G:B 2:10:10:10 little endian */
 137 #define GBM_FORMAT_ABGR2101010  __gbm_fourcc_code('A', 'B', '3', '0') /* [31:0] A:B:G:R 2:10:10:10 little endian */
 138 #define GBM_FORMAT_RGBA1010102  __gbm_fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
 139 #define GBM_FORMAT_BGRA1010102  __gbm_fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
 140
 141 /* packed YCbCr */
 142 #define GBM_FORMAT_YUYV         __gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
 143 #define GBM_FORMAT_YVYU         __gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
 144 #define GBM_FORMAT_UYVY         __gbm_fourcc_code('U', 'Y', 'V', 'Y') /* [31:0] Y1:Cr0:Y0:Cb0 8:8:8:8 little endian */
 145 #define GBM_FORMAT_VYUY         __gbm_fourcc_code('V', 'Y', 'U', 'Y') /* [31:0] Y1:Cb0:Y0:Cr0 8:8:8:8 little endian */
 146
 147 #define GBM_FORMAT_AYUV         __gbm_fourcc_code('A', 'Y', 'U', 'V') /* [31:0] A:Y:Cb:Cr 8:8:8:8 little endian */
 148
 149 /*
 150  * 2 plane YCbCr
 151  * index 0 = Y plane, [7:0] Y
 152  * index 1 = Cr:Cb plane, [15:0] Cr:Cb little endian
 153  * or
 154  * index 1 = Cb:Cr plane, [15:0] Cb:Cr little endian
 155  */
 156 #define GBM_FORMAT_NV12         __gbm_fourcc_code('N', 'V', '1', '2') /* 2x2 subsampled Cr:Cb plane */
 157 #define GBM_FORMAT_NV21         __gbm_fourcc_code('N', 'V', '2', '1') /* 2x2 subsampled Cb:Cr plane */
 158 #define GBM_FORMAT_NV16         __gbm_fourcc_code('N', 'V', '1', '6') /* 2x1 subsampled Cr:Cb plane */
 159 #define GBM_FORMAT_NV61         __gbm_fourcc_code('N', 'V', '6', '1') /* 2x1 subsampled Cb:Cr plane */
 160
 161 /*
 162  * 3 plane YCbCr
 163  * index 0: Y plane, [7:0] Y
 164  * index 1: Cb plane, [7:0] Cb
 165  * index 2: Cr plane, [7:0] Cr
 166  * or
 167  * index 1: Cr plane, [7:0] Cr
 168  * index 2: Cb plane, [7:0] Cb
 169  */
 170 #define GBM_FORMAT_YUV410       __gbm_fourcc_code('Y', 'U', 'V', '9') /* 4x4 subsampled Cb (1) and Cr (2) planes */
 171 #define GBM_FORMAT_YVU410       __gbm_fourcc_code('Y', 'V', 'U', '9') /* 4x4 subsampled Cr (1) and Cb (2) planes */
 172 #define GBM_FORMAT_YUV411       __gbm_fourcc_code('Y', 'U', '1', '1') /* 4x1 subsampled Cb (1) and Cr (2) planes */
 173 #define GBM_FORMAT_YVU411       __gbm_fourcc_code('Y', 'V', '1', '1') /* 4x1 subsampled Cr (1) and Cb (2) planes */
 174 #define GBM_FORMAT_YUV420       __gbm_fourcc_code('Y', 'U', '1', '2') /* 2x2 subsampled Cb (1) and Cr (2) planes */
 175 #define GBM_FORMAT_YVU420       __gbm_fourcc_code('Y', 'V', '1', '2') /* 2x2 subsampled Cr (1) and Cb (2) planes */
 176 #define GBM_FORMAT_YUV422       __gbm_fourcc_code('Y', 'U', '1', '6') /* 2x1 subsampled Cb (1) and Cr (2) planes */
 177 #define GBM_FORMAT_YVU422       __gbm_fourcc_code('Y', 'V', '1', '6') /* 2x1 subsampled Cr (1) and Cb (2) planes */
 178 #define GBM_FORMAT_YUV444       __gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
 179 #define GBM_FORMAT_YVU444       __gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
 180
 181
 182 /**
 183  * Flags to indicate the intended use for the buffer - these are passed into
 184  * gbm_bo_create(). The caller must set the union of all the flags that are
 185  * appropriate
 186  *
 187  * \sa Use gbm_device_is_format_supported() to check if the combination of format
 188  * and use flags are supported
 189  */
 190 enum gbm_bo_flags {
 191    /**
 192     * Buffer is going to be presented to the screen using an API such as KMS
 193     */
 194    GBM_BO_USE_SCANOUT      = (1 << 0),
 195    /**
 196     * Buffer is going to be used as cursor
 197     */
 198    GBM_BO_USE_CURSOR       = (1 << 1),
 199    /**
 200     * Deprecated
 201     */
 202    GBM_BO_USE_CURSOR_64X64 = GBM_BO_USE_CURSOR,
 203    /**
 204     * Buffer is to be used for rendering - for example it is going to be used
 205     * as the storage for a color buffer
 206     */
 207    GBM_BO_USE_RENDERING    = (1 << 2),
 208    /**
 209     * Buffer can be used for gbm_bo_write.  This is guaranteed to work
 210     * with GBM_BO_USE_CURSOR. but may not work for other combinations.
 211     */
 212    GBM_BO_USE_WRITE    = (1 << 3),
 213    /**
 214     * Buffer is linear, i.e. not tiled.
 215     */
 216    GBM_BO_USE_LINEAR = (1 << 4),
 217 };
 218
 219 int
 220 gbm_device_get_fd(struct gbm_device *gbm);
 221
 222 const char *
 223 gbm_device_get_backend_name(struct gbm_device *gbm);
 224
 225 int
 226 gbm_device_is_format_supported(struct gbm_device *gbm,
 227                                uint32_t format, uint32_t usage);
 228
 229 void
 230 gbm_device_destroy(struct gbm_device *gbm);
 231
 232 struct gbm_device *
 233 gbm_create_device(int fd);
 234
 235 struct gbm_bo *
 236 gbm_bo_create(struct gbm_device *gbm,
 237               uint32_t width, uint32_t height,
 238               uint32_t format, uint32_t flags);
 239
 240 #define GBM_BO_IMPORT_WL_BUFFER         0x5501
 241 #define GBM_BO_IMPORT_EGL_IMAGE         0x5502
 242 #define GBM_BO_IMPORT_FD                0x5503
 243
 244 struct gbm_import_fd_data {
 245    int fd;
 246    uint32_t width;
 247    uint32_t height;
 248    uint32_t stride;
 249    uint32_t format;
 250 };
 251
 252 struct gbm_bo *
 253 gbm_bo_import(struct gbm_device *gbm, uint32_t type,
 254               void *buffer, uint32_t usage);
 255
 256 uint32_t
 257 gbm_bo_get_width(struct gbm_bo *bo);
 258
 259 uint32_t
 260 gbm_bo_get_height(struct gbm_bo *bo);
 261
 262 uint32_t
 263 gbm_bo_get_stride(struct gbm_bo *bo);
 264
 265 uint32_t
 266 gbm_bo_get_format(struct gbm_bo *bo);
 267
 268 struct gbm_device *
 269 gbm_bo_get_device(struct gbm_bo *bo);
 270
 271 union gbm_bo_handle
 272 gbm_bo_get_handle(struct gbm_bo *bo);
 273
 274 int
 275 gbm_bo_get_fd(struct gbm_bo *bo);
 276
 277 int
 278 gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);
 279
 280 void
 281 gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
 282                      void (*destroy_user_data)(struct gbm_bo *, void *));
 283
 284 void *
 285 gbm_bo_get_user_data(struct gbm_bo *bo);
 286
 287 void
 288 gbm_bo_destroy(struct gbm_bo *bo);
 289
 290 struct gbm_surface *
 291 gbm_surface_create(struct gbm_device *gbm,
 292                    uint32_t width, uint32_t height,
 293                    uint32_t format, uint32_t flags);
 294
 295 int
 296 gbm_surface_needs_lock_front_buffer(struct gbm_surface *surface);
 297
 298 struct gbm_bo *
 299 gbm_surface_lock_front_buffer(struct gbm_surface *surface);
 300
 301 void
 302 gbm_surface_release_buffer(struct gbm_surface *surface, struct gbm_bo *bo);
 303
 304 int
 305 gbm_surface_has_free_buffers(struct gbm_surface *surface);
 306
 307 void
 308 gbm_surface_destroy(struct gbm_surface *surface);
 309
 310 #ifdef __cplusplus
 311 }
 312 #endif
 313
 314 #endif