2011-05-26 14:09:39 +01:00
|
|
|
/*
|
|
|
|
* Copyright © 2011 Intel Corporation
|
|
|
|
*
|
|
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
|
|
* to deal in the Software without restriction, including without limitation
|
|
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
|
|
*
|
|
|
|
* The above copyright notice and this permission notice (including the next
|
|
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
|
|
* Software.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
|
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
|
|
* DEALINGS IN THE SOFTWARE.
|
|
|
|
*
|
|
|
|
* Authors:
|
|
|
|
* Benjamin Franzke <benjaminfranzke@googlemail.com>
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define _BSD_SOURCE
|
|
|
|
|
|
|
|
#include <stddef.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
|
|
|
#include <stdint.h>
|
|
|
|
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#include <unistd.h>
|
|
|
|
|
|
|
|
#include "gbm.h"
|
|
|
|
#include "gbmint.h"
|
|
|
|
#include "common.h"
|
|
|
|
#include "backend.h"
|
|
|
|
|
|
|
|
#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
|
|
|
|
|
|
|
|
struct gbm_device *devices[16];
|
|
|
|
|
|
|
|
static int device_num = 0;
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Returns the file description for the gbm device
|
|
|
|
*
|
|
|
|
* \return The fd that the struct gbm_device was created with
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT int
|
|
|
|
gbm_device_get_fd(struct gbm_device *gbm)
|
|
|
|
{
|
|
|
|
return gbm->fd;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* FIXME: maybe superfluous, use udev subclass from the fd? */
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Get the backend name for the given gbm device
|
|
|
|
*
|
|
|
|
* \return The backend name string - this belongs to the device and must not
|
|
|
|
* be freed
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT const char *
|
|
|
|
gbm_device_get_backend_name(struct gbm_device *gbm)
|
|
|
|
{
|
|
|
|
return gbm->name;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Test if a format is supported for a given set of usage flags.
|
|
|
|
*
|
|
|
|
* \param gbm The created buffer manager
|
|
|
|
* \param format The format to test
|
|
|
|
* \param usage A bitmask of the usages to test the format against
|
|
|
|
* \return 1 if the format is supported otherwise 0
|
|
|
|
*
|
|
|
|
* \sa enum gbm_bo_flags for the list of flags that the format can be
|
|
|
|
* tested against
|
|
|
|
*
|
|
|
|
* \sa enum gbm_bo_format for the list of formats
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
int
|
|
|
|
gbm_device_is_format_supported(struct gbm_device *gbm,
|
|
|
|
enum gbm_bo_format format,
|
|
|
|
uint32_t usage)
|
|
|
|
{
|
|
|
|
return gbm->is_format_supported(gbm, format, usage);
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Destroy the gbm device and free all resources associated with it.
|
|
|
|
*
|
|
|
|
* \param gbm The device created using gbm_create_device()
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT void
|
|
|
|
gbm_device_destroy(struct gbm_device *gbm)
|
|
|
|
{
|
|
|
|
gbm->refcount--;
|
|
|
|
if (gbm->refcount == 0)
|
|
|
|
gbm->destroy(gbm);
|
|
|
|
}
|
|
|
|
|
|
|
|
GBM_EXPORT struct gbm_device *
|
|
|
|
_gbm_mesa_get_device(int fd)
|
|
|
|
{
|
|
|
|
struct gbm_device *gbm = NULL;
|
|
|
|
struct stat buf;
|
|
|
|
dev_t dev;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (fd < 0 || fstat(fd, &buf) < 0 || !S_ISCHR(buf.st_mode)) {
|
|
|
|
fprintf(stderr, "_gbm_mesa_get_device: invalid fd: %d\n", fd);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < device_num; ++i) {
|
|
|
|
dev = devices[i]->stat.st_rdev;
|
|
|
|
if (major(dev) == major(buf.st_rdev) &&
|
|
|
|
minor(dev) == minor(buf.st_rdev)) {
|
|
|
|
gbm = devices[i];
|
|
|
|
gbm->refcount++;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return gbm;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Create a gbm device for allocating buffers
|
|
|
|
*
|
|
|
|
* The file descriptor passed in is used by the backend to communicate with
|
|
|
|
* platform for allocating the memory. For allocations using DRI this would be
|
|
|
|
* the file descriptor returned when opening a device such as \c
|
|
|
|
* /dev/dri/card0
|
|
|
|
*
|
|
|
|
* \param fd The file descriptor for an backend specific device
|
|
|
|
* \return The newly created struct gbm_device. The resources associated with
|
|
|
|
* the device should be freed with gbm_device_destroy() when it is no longer
|
|
|
|
* needed. If the creation of the device failed NULL will be returned.
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT struct gbm_device *
|
|
|
|
gbm_create_device(int fd)
|
|
|
|
{
|
|
|
|
struct gbm_device *gbm = NULL;
|
|
|
|
struct stat buf;
|
|
|
|
|
|
|
|
if (fd < 0 || fstat(fd, &buf) < 0 || !S_ISCHR(buf.st_mode)) {
|
|
|
|
fprintf(stderr, "gbm_create_device: invalid fd: %d\n", fd);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (device_num == 0)
|
|
|
|
memset(devices, 0, sizeof devices);
|
|
|
|
|
|
|
|
gbm = _gbm_create_device(fd);
|
|
|
|
if (gbm == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
gbm->dummy = gbm_create_device;
|
|
|
|
gbm->stat = buf;
|
|
|
|
gbm->refcount = 1;
|
|
|
|
|
|
|
|
if (device_num < ARRAY_SIZE(devices)-1)
|
|
|
|
devices[device_num++] = gbm;
|
|
|
|
|
|
|
|
return gbm;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Get the width of the buffer object
|
|
|
|
*
|
|
|
|
* \param bo The buffer object
|
|
|
|
* \return The width of the allocated buffer object
|
|
|
|
*
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT unsigned int
|
|
|
|
gbm_bo_get_width(struct gbm_bo *bo)
|
|
|
|
{
|
|
|
|
return bo->width;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Get the height of the buffer object
|
|
|
|
*
|
|
|
|
* \param bo The buffer object
|
|
|
|
* \return The height of the allocated buffer object
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT unsigned int
|
|
|
|
gbm_bo_get_height(struct gbm_bo *bo)
|
|
|
|
{
|
|
|
|
return bo->height;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Get the stride of the buffer object
|
|
|
|
*
|
|
|
|
* This is calculated by the backend when it does the allocation in
|
|
|
|
* gbm_bo_create()
|
|
|
|
*
|
|
|
|
* \param bo The buffer object
|
|
|
|
* \return The stride of the allocated buffer object
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT uint32_t
|
|
|
|
gbm_bo_get_pitch(struct gbm_bo *bo)
|
|
|
|
{
|
|
|
|
return bo->pitch;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/** Get the handle of the buffer object
|
|
|
|
*
|
|
|
|
* This is stored in the platform generic union gbm_bo_handle type. However
|
|
|
|
* the format of this handle is platform specific.
|
|
|
|
*
|
|
|
|
* \param bo The buffer object
|
2012-01-25 14:24:13 +00:00
|
|
|
* \return Returns the handle of the allocated buffer object
|
2011-12-20 15:40:21 +00:00
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT union gbm_bo_handle
|
|
|
|
gbm_bo_get_handle(struct gbm_bo *bo)
|
|
|
|
{
|
|
|
|
return bo->handle;
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/**
|
|
|
|
* Destroys the given buffer object and frees all resources associated with
|
|
|
|
* it.
|
|
|
|
*
|
|
|
|
* \param bo The buffer object
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT void
|
|
|
|
gbm_bo_destroy(struct gbm_bo *bo)
|
|
|
|
{
|
|
|
|
bo->gbm->bo_destroy(bo);
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/**
|
|
|
|
* Allocate a buffer object for the given dimensions
|
|
|
|
*
|
|
|
|
* \param gbm The gbm device returned from gbm_create_device()
|
|
|
|
* \param width The width for the buffer
|
|
|
|
* \param height The height for the buffer
|
|
|
|
* \param format The format to use for the buffer
|
|
|
|
* \param usage The union of the usage flags for this buffer
|
|
|
|
*
|
|
|
|
* \return A newly allocated buffer that should be freed with gbm_bo_destroy()
|
|
|
|
* when no longer needed. If an error occurs during allocation %NULL will be
|
|
|
|
* returned.
|
|
|
|
*
|
|
|
|
* \sa enum gbm_bo_format for the list of formats
|
|
|
|
* \sa enum gbm_bo_flags for the list of usage flags
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT struct gbm_bo *
|
|
|
|
gbm_bo_create(struct gbm_device *gbm,
|
|
|
|
uint32_t width, uint32_t height,
|
|
|
|
enum gbm_bo_format format, uint32_t usage)
|
|
|
|
{
|
|
|
|
if (width == 0 || height == 0)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (usage & GBM_BO_USE_CURSOR_64X64 &&
|
|
|
|
(width != 64 || height != 64))
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return gbm->bo_create(gbm, width, height, format, usage);
|
|
|
|
}
|
|
|
|
|
2011-12-20 15:40:21 +00:00
|
|
|
/**
|
|
|
|
* Create a buffer object representing the contents of an EGLImage
|
|
|
|
*
|
|
|
|
* \param gbm The gbm device returned from gbm_create_device()
|
|
|
|
* \param egl_dpy The EGLDisplay on which the EGLImage was created
|
|
|
|
* \param egl_image The EGLImage to create the buffer from
|
|
|
|
* \param width The width to use in the creation of the buffer object
|
|
|
|
* \param height The height to use in the creation of the buffer object
|
|
|
|
* \param usage The union of the usage flags for this buffer
|
|
|
|
*
|
|
|
|
* \return A newly allocated buffer object that should be freed with
|
|
|
|
* gbm_bo_destroy() when no longer needed.
|
|
|
|
*
|
|
|
|
* \sa enum gbm_bo_flags for the list of usage flags
|
|
|
|
*
|
|
|
|
* \note The expectation is that this function will use an efficient method
|
|
|
|
* for making the contents of the EGLImage available as a buffer object.
|
|
|
|
*/
|
2011-05-26 14:09:39 +01:00
|
|
|
GBM_EXPORT struct gbm_bo *
|
|
|
|
gbm_bo_create_from_egl_image(struct gbm_device *gbm,
|
|
|
|
void *egl_dpy, void *egl_image,
|
|
|
|
uint32_t width, uint32_t height,
|
|
|
|
uint32_t usage)
|
|
|
|
{
|
|
|
|
if (width == 0 || height == 0)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
return gbm->bo_create_from_egl_image(gbm, egl_dpy, egl_image,
|
|
|
|
width, height, usage);
|
|
|
|
}
|