wayland: add initial support for EMGD driver.

Signed-off-by: Zhao Halley <halley.zhao@intel.com>
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>

4 files changed, 194 insertions, 0 deletions

diff --git a/va/wayland/Makefile.am b/va/wayland/Makefile.am
index 9e97e2a..a9f9546 100644
--- a/va/wayland/Makefile.am
+++ b/va/wayland/Makefile.am
@@ -33,6 +33,7 @@ INCLUDES = \
 source_c = \
 	va_wayland.c		\
 	va_wayland_drm.c	\
+	va_wayland_emgd.c	\
 	$(top_srcdir)/va/drm/va_drm_utils.c \
 	$(NULL)
 
@@ -43,6 +44,7 @@ source_h = \
 
 source_h_priv = \
 	va_wayland_drm.h	\
+	va_wayland_emgd.h	\
 	va_wayland_private.h	\
 	$(NULL)
 
diff --git a/va/wayland/va_wayland.c b/va/wayland/va_wayland.c
index 22f916f..88a841f 100644
--- a/va/wayland/va_wayland.c
+++ b/va/wayland/va_wayland.c
@@ -28,6 +28,7 @@
 #include <stdarg.h>
 #include "va_wayland.h"
 #include "va_wayland_drm.h"
+#include "va_wayland_emgd.h"
 #include "va_wayland_private.h"
 #include "va_backend.h"
 #include "va_backend_wayland.h"
@@ -106,6 +107,8 @@ struct va_wayland_backend {
 static const struct va_wayland_backend g_backends[] = {
     { va_wayland_drm_create,
       va_wayland_drm_destroy },
+    { va_wayland_emgd_create,
+      va_wayland_emgd_destroy },
     { NULL, }
 };
 
diff --git a/va/wayland/va_wayland_emgd.c b/va/wayland/va_wayland_emgd.c
new file mode 100644
index 0000000..73e6802
--- /dev/null
+++ b/va/wayland/va_wayland_emgd.c
@@ -0,0 +1,137 @@
+/*
+ * va_wayland_emgd.c - Wayland/EMGD helpers
+ *
+ * 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 INTEL 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 "sysdeps.h"
+#include <unistd.h>
+#include <dlfcn.h>
+#include "va_drmcommon.h"
+#include "va_wayland_emgd.h"
+#include "va_wayland_private.h"
+
+/* XXX: Wayland/EMGD support currently lives in libwayland-emgd.so.* library */
+#define LIBWAYLAND_EMGD_NAME "libwayland-emgd.so.1"
+
+typedef struct va_wayland_emgd_context {
+    struct va_wayland_context   base;
+    void                       *handle;
+    struct wl_emgd             *emgd;
+    void                       *emgd_interface;
+    unsigned int                is_created      : 1;
+} VADisplayContextWaylandEMGD;
+
+static inline void
+wl_emgd_destroy(struct wl_emgd *emgd)
+{
+    wl_proxy_destroy((struct wl_proxy *)emgd);
+}
+
+static VAStatus
+va_DisplayContextGetDriverName(
+    VADisplayContextP pDisplayContext,
+    char            **driver_name_ptr
+)
+{
+    *driver_name_ptr = strdup("emgd");
+    return VA_STATUS_SUCCESS;
+}
+
+void
+va_wayland_emgd_destroy(VADisplayContextP pDisplayContext)
+{
+    VADriverContextP const ctx = pDisplayContext->pDriverContext;
+    VADisplayContextWaylandEMGD * const wl_emgd_ctx = pDisplayContext->opaque;
+    struct drm_state * const drm_state = ctx->drm_state;
+
+    if (wl_emgd_ctx->emgd) {
+        wl_emgd_destroy(wl_emgd_ctx->emgd);
+        wl_emgd_ctx->emgd = NULL;
+    }
+    wl_emgd_ctx->is_created = 0;
+
+    if (wl_emgd_ctx->handle) {
+        dlclose(wl_emgd_ctx->handle);
+        wl_emgd_ctx->handle = NULL;
+    }
+
+    if (drm_state) {
+        if (drm_state->fd >= 0) {
+            close(drm_state->fd);
+            drm_state->fd = -1;
+        }
+        free(ctx->drm_state);
+        ctx->drm_state = NULL;
+    }
+}
+
+bool
+va_wayland_emgd_create(VADisplayContextP pDisplayContext)
+{
+    VADriverContextP const ctx = pDisplayContext->pDriverContext;
+    VADisplayContextWaylandEMGD *wl_emgd_ctx;
+    struct drm_state *drm_state;
+    uint32_t id;
+
+    wl_emgd_ctx = malloc(sizeof(*wl_emgd_ctx));
+    if (!wl_emgd_ctx)
+        return false;
+    wl_emgd_ctx->base.destroy           = va_wayland_emgd_destroy;
+    wl_emgd_ctx->handle                 = NULL;
+    wl_emgd_ctx->emgd                   = NULL;
+    wl_emgd_ctx->emgd_interface         = NULL;
+    wl_emgd_ctx->is_created             = 0;
+    pDisplayContext->opaque             = wl_emgd_ctx;
+    pDisplayContext->vaGetDriverName    = va_DisplayContextGetDriverName;
+
+    drm_state = calloc(1, sizeof(struct drm_state));
+    if (!drm_state)
+        return false;
+    drm_state->fd        = -1;
+    drm_state->auth_type = 0;
+    ctx->drm_state       = drm_state;
+
+    id = wl_display_get_global(ctx->native_dpy, "wl_emgd", 1);
+    if (!id) {
+        wl_display_roundtrip(ctx->native_dpy);
+        id = wl_display_get_global(ctx->native_dpy, "wl_emgd", 1);
+        if (!id)
+            return false;
+    }
+
+    wl_emgd_ctx->handle = dlopen(LIBWAYLAND_EMGD_NAME, RTLD_LAZY|RTLD_LOCAL);
+    if (!wl_emgd_ctx->handle)
+        return false;
+
+    wl_emgd_ctx->emgd_interface =
+        dlsym(wl_emgd_ctx->handle, "wl_emgd_interface");
+    if (!wl_emgd_ctx->emgd_interface)
+        return false;
+
+    wl_emgd_ctx->emgd =
+        wl_display_bind(ctx->native_dpy, id, wl_emgd_ctx->emgd_interface);
+    if (!wl_emgd_ctx->emgd)
+        return false;
+    return true;
+}
diff --git a/va/wayland/va_wayland_emgd.h b/va/wayland/va_wayland_emgd.h
new file mode 100644
index 0000000..053b6b4
--- /dev/null
+++ b/va/wayland/va_wayland_emgd.h
@@ -0,0 +1,52 @@
+/*
+ * va_wayland_emgd.h - Wayland/EMGD helpers
+ *
+ * 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 INTEL 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.
+ */
+
+#ifndef VA_WAYLAND_EMGD_H
+#define VA_WAYLAND_EMGD_H
+
+#include <stdbool.h>
+#include "va_wayland.h"
+#include "va_backend.h"
+#include "va_backend_wayland.h"
+
+/**
+ * \brief Initializes Wayland/EMGD layer.
+ *
+ * This is an internal function used to initialize the VA/EMGD subsystem
+ * if the application is running on an EMGD-based server.
+ *
+ * @param[in]   pDisplayContext the VA display context
+ * @return true if successful
+ */
+DLL_HIDDEN
+bool
+va_wayland_emgd_create(VADisplayContextP pDisplayContext);
+
+DLL_HIDDEN
+void
+va_wayland_emgd_destroy(VADisplayContextP pDisplayContext);
+
+#endif /* VA_WAYLAND_EMGD_H */