blob: 5b4bea9683d1032104930dd91a647afd44378004 [file] [log] [blame]
/*
* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
*
* 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, sub license, 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
*/
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <sys/stat.h>
#include <xf86drm.h>
#include <X11/Xlibint.h>
#include <X11/Xlib.h>
#include "va.h"
#include "va_backend.h"
#include "va_dri2.h"
#include "va_dri2tokens.h"
#include "va_dricommon.h"
#define __DRI_BUFFER_FRONT_LEFT 0
#define __DRI_BUFFER_BACK_LEFT 1
#define __DRI_BUFFER_FRONT_RIGHT 2
#define __DRI_BUFFER_BACK_RIGHT 3
#define __DRI_BUFFER_DEPTH 4
#define __DRI_BUFFER_STENCIL 5
#define __DRI_BUFFER_ACCUM 6
#define __DRI_BUFFER_FAKE_FRONT_LEFT 7
#define __DRI_BUFFER_FAKE_FRONT_RIGHT 8
struct dri2_drawable {
struct dri_drawable base;
union dri_buffer buffers[5];
int width;
int height;
int has_backbuffer;
int back_index;
int front_index;
};
static int gsDRI2SwapAvailable;
static struct dri_drawable *
dri2CreateDrawable(VADriverContextP ctx, XID x_drawable)
{
struct dri2_drawable *dri2_drawable;
dri2_drawable = calloc(1, sizeof(*dri2_drawable));
if (!dri2_drawable)
return NULL;
dri2_drawable->base.x_drawable = x_drawable;
dri2_drawable->base.x = 0;
dri2_drawable->base.y = 0;
VA_DRI2CreateDrawable(ctx->native_dpy, x_drawable);
return &dri2_drawable->base;
}
static void
dri2DestroyDrawable(VADriverContextP ctx, struct dri_drawable *dri_drawable)
{
VA_DRI2DestroyDrawable(ctx->native_dpy, dri_drawable->x_drawable);
free(dri_drawable);
}
static void
dri2SwapBuffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
{
struct dri2_drawable *dri2_drawable = (struct dri2_drawable *)dri_drawable;
XRectangle xrect;
XserverRegion region;
if (dri2_drawable->has_backbuffer) {
if (gsDRI2SwapAvailable) {
CARD64 ret;
VA_DRI2SwapBuffers(ctx->native_dpy, dri_drawable->x_drawable,
0, 1, 0,
&ret);
} else {
xrect.x = 0;
xrect.y = 0;
xrect.width = dri2_drawable->width;
xrect.height = dri2_drawable->height;
region = XFixesCreateRegion(ctx->native_dpy, &xrect, 1);
VA_DRI2CopyRegion(ctx->native_dpy, dri_drawable->x_drawable, region,
DRI2BufferFrontLeft, DRI2BufferBackLeft);
XFixesDestroyRegion(ctx->native_dpy, region);
}
}
}
static union dri_buffer *
dri2GetRenderingBuffer(VADriverContextP ctx, struct dri_drawable *dri_drawable)
{
struct dri2_drawable *dri2_drawable = (struct dri2_drawable *)dri_drawable;
int i;
int count;
unsigned int attachments[5];
VA_DRI2Buffer *buffers;
i = 0;
if (dri_drawable->is_window)
attachments[i++] = __DRI_BUFFER_BACK_LEFT;
else
attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
buffers = VA_DRI2GetBuffers(ctx->native_dpy, dri_drawable->x_drawable,
&dri2_drawable->width, &dri2_drawable->height,
attachments, i, &count);
if (buffers == NULL)
return NULL;
dri2_drawable->has_backbuffer = 0;
for (i = 0; i < count; i++) {
dri2_drawable->buffers[i].dri2.attachment = buffers[i].attachment;
dri2_drawable->buffers[i].dri2.name = buffers[i].name;
dri2_drawable->buffers[i].dri2.pitch = buffers[i].pitch;
dri2_drawable->buffers[i].dri2.cpp = buffers[i].cpp;
dri2_drawable->buffers[i].dri2.flags = buffers[i].flags;
if (buffers[i].attachment == __DRI_BUFFER_BACK_LEFT) {
dri2_drawable->has_backbuffer = 1;
dri2_drawable->back_index = i;
}
if (buffers[i].attachment == __DRI_BUFFER_FRONT_LEFT)
dri2_drawable->front_index = i;
}
dri_drawable->width = dri2_drawable->width;
dri_drawable->height = dri2_drawable->height;
Xfree(buffers);
if (dri2_drawable->has_backbuffer)
return &dri2_drawable->buffers[dri2_drawable->back_index];
return &dri2_drawable->buffers[dri2_drawable->front_index];
}
static void
dri2Close(VADriverContextP ctx)
{
struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
va_dri_free_drawable_hashtable(ctx);
if (dri_state->base.fd >= 0)
close(dri_state->base.fd);
}
int
va_isRenderNodeFd(int fd)
{
struct stat st;
char *name;
/* Check by device node */
if (fstat(fd, &st) == 0)
return S_ISCHR(st.st_mode) && (st.st_rdev & 0x80);
/* Check by device name */
name = drmGetDeviceNameFromFd(fd);
if (name) {
/* drmGetDeviceNameFromFd returns a strdup'ed string */
int r = (strncmp(name, "/dev/dri/renderD", 16) == 0);
drmFree(name);
return r;
}
/* Unrecoverable error */
return -1;
}
Bool
va_isDRI2Connected(VADriverContextP ctx, char **driver_name)
{
struct dri_state *dri_state = (struct dri_state *)ctx->drm_state;
int major, minor;
int error_base;
int event_base;
char *device_name = NULL;
int is_render_nodes;
drm_magic_t magic;
*driver_name = NULL;
if (!VA_DRI2QueryExtension(ctx->native_dpy, &event_base, &error_base))
goto err_out;
if (!VA_DRI2QueryVersion(ctx->native_dpy, &major, &minor))
goto err_out;
if (!VA_DRI2Connect(ctx->native_dpy, RootWindow(ctx->native_dpy, ctx->x11_screen),
driver_name, &device_name))
goto err_out;
if ((dri_state->base.fd != -1) && (dri_state->base.auth_type != VA_NONE))
goto success_out;
dri_state->base.fd = open(device_name, O_RDWR);
if (dri_state->base.fd < 0 || (is_render_nodes = va_isRenderNodeFd(dri_state->base.fd)) < 0)
goto err_out;
if (!is_render_nodes) {
if (drmGetMagic(dri_state->base.fd, &magic))
goto err_out;
if (!VA_DRI2Authenticate(ctx->native_dpy, RootWindow(ctx->native_dpy, ctx->x11_screen),
magic))
goto err_out;
}
dri_state->base.auth_type = VA_DRI2;
dri_state->createDrawable = dri2CreateDrawable;
dri_state->destroyDrawable = dri2DestroyDrawable;
dri_state->swapBuffer = dri2SwapBuffer;
dri_state->getRenderingBuffer = dri2GetRenderingBuffer;
dri_state->close = dri2Close;
gsDRI2SwapAvailable = (minor >= 2);
success_out:
Xfree(device_name);
return True;
err_out:
if (device_name)
Xfree(device_name);
if (*driver_name)
Xfree(*driver_name);
if (dri_state->base.fd >= 0)
close(dri_state->base.fd);
*driver_name = NULL;
dri_state->base.fd = -1;
return False;
}