diff options
Diffstat (limited to 'src/dri2_util.c')
| -rw-r--r-- | src/dri2_util.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/dri2_util.c b/src/dri2_util.c new file mode 100644 index 0000000..7ed168d --- /dev/null +++ b/src/dri2_util.c @@ -0,0 +1,198 @@ +#include <stdlib.h> +#include <fcntl.h> +#include <unistd.h> +#include <assert.h> + +#include <xf86drm.h> + +#include "X11/Xlib.h" +#include "va.h" +#include "va_backend.h" + +#include "va_dri2.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 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; + DRI2CreateDrawable(ctx->x11_dpy, x_drawable); + + return &dri2_drawable->base; +} + +static void +dri2DestroyDrawable(VADriverContextP ctx, struct dri_drawable *dri_drawable) +{ + DRI2DestroyDrawable(ctx->x11_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) { + xrect.x = 0; + xrect.y = 0; + xrect.width = dri2_drawable->width; + xrect.height = dri2_drawable->height; + + region = XFixesCreateRegion(ctx->x11_dpy, &xrect, 1); + DRI2CopyRegion(ctx->x11_dpy, dri_drawable->x_drawable, region, + DRI2BufferFrontLeft, DRI2BufferBackLeft); + XFixesDestroyRegion(ctx->x11_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]; + DRI2Buffer *buffers; + + i = 0; + attachments[i++] = __DRI_BUFFER_BACK_LEFT; + attachments[i++] = __DRI_BUFFER_FRONT_LEFT; + buffers = DRI2GetBuffers(ctx->x11_dpy, dri_drawable->x_drawable, + &dri2_drawable->width, &dri2_drawable->height, + attachments, i, &count); + assert(buffers); + 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->dri_state; + + free_drawable_hashtable(ctx); + assert(dri_state->fd >= 0); + close(dri_state->fd); +} + +Bool +isDRI2Connected(VADriverContextP ctx, char **driver_name) +{ + struct dri_state *dri_state = (struct dri_state *)ctx->dri_state; + int major, minor; + int error_base; + int event_base; + char *device_name = NULL; + drm_magic_t magic; + *driver_name = NULL; + dri_state->fd = -1; + dri_state->driConnectedFlag = VA_NONE; + if (!DRI2QueryExtension(ctx->x11_dpy, &event_base, &error_base)) + goto err_out; + + if (!DRI2QueryVersion(ctx->x11_dpy, &major, &minor)) + goto err_out; + + + if (!DRI2Connect(ctx->x11_dpy, RootWindow(ctx->x11_dpy, ctx->x11_screen), + driver_name, &device_name)) + goto err_out; + + dri_state->fd = open(device_name, O_RDWR); + assert(dri_state->fd >= 0); + + if (dri_state->fd < 0) + goto err_out; + + if (drmGetMagic(dri_state->fd, &magic)) + goto err_out; + + if (!DRI2Authenticate(ctx->x11_dpy, RootWindow(ctx->x11_dpy, ctx->x11_screen), + magic)) + goto err_out; + + dri_state->driConnectedFlag = VA_DRI2; + dri_state->createDrawable = dri2CreateDrawable; + dri_state->destroyDrawable = dri2DestroyDrawable; + dri_state->swapBuffer = dri2SwapBuffer; + dri_state->getRenderingBuffer = dri2GetRenderingBuffer; + dri_state->close = dri2Close; + + return True; + +err_out: + if (device_name) + Xfree(device_name); + + if (*driver_name) + Xfree(*driver_name); + + if (dri_state->fd >= 0) + close(dri_state->fd); + + *driver_name = NULL; + dri_state->fd = -1; + + return False; +} + |