#ifndef _GBM_H_
#define _GBM_H_
+#define __GBM__ 1
+
+#include <stddef.h>
+#include <stdint.h>
+
#ifdef __cplusplus
extern "C" {
#endif
-#define __GBM__ 1
-
-#include <stdint.h>
-
/**
* \file gbm.h
* \brief Generic Buffer Manager
uint64_t u64;
};
+/** Format of the allocated buffer */
+enum gbm_bo_format {
+ /** RGB with 8 bits per channel in a 32 bit value */
+ GBM_BO_FORMAT_XRGB8888,
+ /** ARGB with 8 bits per channel in a 32 bit value */
+ GBM_BO_FORMAT_ARGB8888
+};
+
+
+/**
+ * The FourCC format codes are taken from the drm_fourcc.h definition, and
+ * re-namespaced. New GBM formats must not be added, unless they are
+ * identical ports from drm_fourcc.
+ */
#define __gbm_fourcc_code(a,b,c,d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
#define GBM_FORMAT_R8 __gbm_fourcc_code('R', '8', ' ', ' ') /* [7:0] R */
/* 16 bpp RG */
-#define GBM_FORMAT_RG88 __gbm_fourcc_code('R', 'G', '8', '8') /* [15:0] R:G 8:8 little endian */
#define GBM_FORMAT_GR88 __gbm_fourcc_code('G', 'R', '8', '8') /* [15:0] G:R 8:8 little endian */
/* 8 bpp RGB */
#define GBM_FORMAT_RGBA1010102 __gbm_fourcc_code('R', 'A', '3', '0') /* [31:0] R:G:B:A 10:10:10:2 little endian */
#define GBM_FORMAT_BGRA1010102 __gbm_fourcc_code('B', 'A', '3', '0') /* [31:0] B:G:R:A 10:10:10:2 little endian */
+/*
+ * Floating point 64bpp RGB
+ * IEEE 754-2008 binary16 half-precision float
+ * [15:0] sign:exponent:mantissa 1:5:10
+ */
+#define GBM_FORMAT_XBGR16161616F __gbm_fourcc_code('X', 'B', '4', 'H') /* [63:0] x:B:G:R 16:16:16:16 little endian */
+
+#define GBM_FORMAT_ABGR16161616F __gbm_fourcc_code('A', 'B', '4', 'H') /* [63:0] A:B:G:R 16:16:16:16 little endian */
+
/* packed YCbCr */
#define GBM_FORMAT_YUYV __gbm_fourcc_code('Y', 'U', 'Y', 'V') /* [31:0] Cr0:Y1:Cb0:Y0 8:8:8:8 little endian */
#define GBM_FORMAT_YVYU __gbm_fourcc_code('Y', 'V', 'Y', 'U') /* [31:0] Cb0:Y1:Cr0:Y0 8:8:8:8 little endian */
#define GBM_FORMAT_YUV444 __gbm_fourcc_code('Y', 'U', '2', '4') /* non-subsampled Cb (1) and Cr (2) planes */
#define GBM_FORMAT_YVU444 __gbm_fourcc_code('Y', 'V', '2', '4') /* non-subsampled Cr (1) and Cb (2) planes */
-/*
- * Format Modifiers:
- *
- * Format modifiers describe, typically, a re-ordering or modification
- * of the data in a plane of an FB. This can be used to express tiled/
- * swizzled formats, or compression, or a combination of the two.
- *
- * The upper 8 bits of the format modifier are a vendor-id as assigned
- * below. The lower 56 bits are assigned as vendor sees fit.
- */
-
-/* Vendor Ids: */
-#define GBM_FORMAT_MOD_NONE 0
-#define GBM_FORMAT_MOD_VENDOR_INTEL 0x01
-#define GBM_FORMAT_MOD_VENDOR_AMD 0x02
-#define GBM_FORMAT_MOD_VENDOR_NV 0x03
-#define GBM_FORMAT_MOD_VENDOR_SAMSUNG 0x04
-#define GBM_FORMAT_MOD_VENDOR_QCOM 0x05
-/* add more to the end as needed */
-
-#define gbm_fourcc_mod_code(vendor, val) \
- ((((__u64)GBM_FORMAT_MOD_VENDOR_## vendor) << 56) | (val & 0x00ffffffffffffffULL))
+struct gbm_format_name_desc {
+ char name[5];
+};
/**
* Flags to indicate the intended use for the buffer - these are passed into
*/
GBM_BO_USE_RENDERING = (1 << 2),
/**
- * Deprecated
+ * Buffer can be used for gbm_bo_write. This is guaranteed to work
+ * with GBM_BO_USE_CURSOR, but may not work for other combinations.
*/
GBM_BO_USE_WRITE = (1 << 3),
/**
- * Buffer is guaranteed to be laid out linearly in memory. That is, the
- * buffer is laid out as an array with 'height' blocks, each block with
- * length 'stride'. Each stride is in the same order as the rows of the
- * buffer.
+ * Buffer is linear, i.e. not tiled.
+ */
+ GBM_BO_USE_LINEAR = (1 << 4),
+ /**
+ * The buffer will be used as a texture that will be sampled from.
+ */
+ GBM_BO_USE_TEXTURING = (1 << 5),
+ /**
+ * The buffer will be written to by a camera subsystem.
+ */
+ GBM_BO_USE_CAMERA_WRITE = (1 << 6),
+ /**
+ * The buffer will be read from by a camera subsystem.
+ */
+ GBM_BO_USE_CAMERA_READ = (1 << 7),
+ /**
+ * Buffer inaccessible to unprivileged users.
+ */
+ GBM_BO_USE_PROTECTED = (1 << 8),
+ /**
+ * These flags specify the frequency of software access. These flags do not
+ * guarantee the buffer is linear, but do guarantee gbm_bo_map(..) will
+ * present a linear view.
+ */
+ GBM_BO_USE_SW_READ_OFTEN = (1 << 9),
+ GBM_BO_USE_SW_READ_RARELY = (1 << 10),
+ GBM_BO_USE_SW_WRITE_OFTEN = (1 << 11),
+ GBM_BO_USE_SW_WRITE_RARELY = (1 << 12),
+ /**
+ * The buffer will be written by a video decode accelerator.
+ */
+ GBM_BO_USE_HW_VIDEO_DECODER = (1 << 13),
+ /**
+ * The buffer will be read by a video encode accelerator.
*/
- GBM_BO_USE_LINEAR = (1 << 4),
+ GBM_BO_USE_HW_VIDEO_ENCODER = (1 << 14),
+
+ /**
+ * If this flag is set, no backing memory will be allocated for the
+ * created buffer. The metadata of the buffer (e.g. size) can be
+ * queried, and the values will be equal to a buffer allocated with
+ * the same same arguments minus this flag. However, any methods
+ * which would otherwise access the underlying buffer will fail.
+ */
+ GBM_TEST_ALLOC = (1 << 15),
};
int
gbm_device_is_format_supported(struct gbm_device *gbm,
uint32_t format, uint32_t usage);
+int
+gbm_device_get_format_modifier_plane_count(struct gbm_device *gbm,
+ uint32_t format,
+ uint64_t modifier);
+
void
gbm_device_destroy(struct gbm_device *gbm);
uint32_t width, uint32_t height,
uint32_t format, uint32_t flags);
+struct gbm_bo *
+gbm_bo_create_with_modifiers(struct gbm_device *gbm,
+ uint32_t width, uint32_t height,
+ uint32_t format,
+ const uint64_t *modifiers,
+ const unsigned int count);
#define GBM_BO_IMPORT_WL_BUFFER 0x5501
#define GBM_BO_IMPORT_EGL_IMAGE 0x5502
#define GBM_BO_IMPORT_FD 0x5503
+// Deprecated. Use GBM_BO_IMPORT_FD_MODIFIER instead.
#define GBM_BO_IMPORT_FD_PLANAR 0x5504
+#define GBM_BO_IMPORT_FD_MODIFIER 0x5505
struct gbm_import_fd_data {
int fd;
uint32_t format;
};
-struct gbm_import_fd_planar_data {
- int fds[4];
+#define GBM_MAX_PLANES 4
+
+struct gbm_import_fd_modifier_data {
uint32_t width;
uint32_t height;
uint32_t format;
- uint32_t offsets[4];
- uint32_t strides[4];
- uint64_t format_modifiers[4];
+ uint32_t num_fds;
+ int fds[GBM_MAX_PLANES];
+ int strides[GBM_MAX_PLANES];
+ int offsets[GBM_MAX_PLANES];
+ uint64_t modifier;
};
struct gbm_bo *
void *
gbm_bo_map(struct gbm_bo *bo,
uint32_t x, uint32_t y, uint32_t width, uint32_t height,
- uint32_t flags, uint32_t *stride, void **map_data, size_t plane);
+ uint32_t flags, uint32_t *stride, void **map_data);
void
gbm_bo_unmap(struct gbm_bo *bo, void *map_data);
uint32_t
gbm_bo_get_stride(struct gbm_bo *bo);
-/* Tegra bringup hack to pass tiling parameters at EGLImage creation. */
uint32_t
-gbm_bo_get_stride_or_tiling(struct gbm_bo *bo);
+gbm_bo_get_stride_for_plane(struct gbm_bo *bo, size_t plane);
uint32_t
gbm_bo_get_format(struct gbm_bo *bo);
-uint64_t
-gbm_bo_get_format_modifier(struct gbm_bo *bo);
+uint32_t
+gbm_bo_get_bpp(struct gbm_bo *bo);
+
+uint32_t
+gbm_bo_get_offset(struct gbm_bo *bo, size_t plane);
struct gbm_device *
gbm_bo_get_device(struct gbm_bo *bo);
int
gbm_bo_get_fd(struct gbm_bo *bo);
-size_t
-gbm_bo_get_num_planes(struct gbm_bo *bo);
-
-union gbm_bo_handle
-gbm_bo_get_plane_handle(struct gbm_bo *bo, size_t plane);
+uint64_t
+gbm_bo_get_modifier(struct gbm_bo *bo);
int
-gbm_bo_get_plane_fd(struct gbm_bo *bo, size_t plane);
-
-uint32_t
-gbm_bo_get_plane_offset(struct gbm_bo *bo, size_t plane);
-
-uint32_t
-gbm_bo_get_plane_size(struct gbm_bo *bo, size_t plane);
+gbm_bo_get_plane_count(struct gbm_bo *bo);
-uint32_t
-gbm_bo_get_plane_stride(struct gbm_bo *bo, size_t plane);
+union gbm_bo_handle
+gbm_bo_get_handle_for_plane(struct gbm_bo *bo, size_t plane);
-uint64_t
-gbm_bo_get_plane_format_modifier(struct gbm_bo *bo, size_t plane);
+int
+gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);
void
gbm_bo_set_user_data(struct gbm_bo *bo, void *data,
uint32_t width, uint32_t height,
uint32_t format, uint32_t flags);
+struct gbm_surface *
+gbm_surface_create_with_modifiers(struct gbm_device *gbm,
+ uint32_t width, uint32_t height,
+ uint32_t format,
+ const uint64_t *modifiers,
+ const unsigned int count);
+
struct gbm_bo *
gbm_surface_lock_front_buffer(struct gbm_surface *surface);
void
gbm_surface_destroy(struct gbm_surface *surface);
+char *
+gbm_format_get_name(uint32_t gbm_format, struct gbm_format_name_desc *desc);
+
+
+#ifndef MINIGBM
+#define MINIGBM
+#endif
+/*
+ * The following functions are not deprecated, but not in the Mesa the gbm
+ * header. The main difference is minigbm allows for the possibility of
+ * disjoint YUV images, while Mesa GBM does not.
+ */
+uint32_t
+gbm_bo_get_plane_size(struct gbm_bo *bo, size_t plane);
+
+int
+gbm_bo_get_plane_fd(struct gbm_bo *bo, size_t plane);
+
+void *
+gbm_bo_map2(struct gbm_bo *bo,
+ uint32_t x, uint32_t y, uint32_t width, uint32_t height,
+ uint32_t flags, uint32_t *stride, void **map_data, int plane);
+
#ifdef __cplusplus
}
#endif
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