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/*
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 * va_wayland_emgd.c - Wayland/EMGD helpers
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 *
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 * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the
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 * "Software"), to deal in the Software without restriction, including
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 * without limitation the rights to use, copy, modify, merge, publish,
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 * distribute, sub license, and/or sell copies of the Software, and to
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 * permit persons to whom the Software is furnished to do so, subject to
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 * the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the
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 * next paragraph) shall be included in all copies or substantial portions
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 * of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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 * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 */
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#include "sysdeps.h"
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#include
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#include
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#include "va_drmcommon.h"
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#include "va_wayland_emgd.h"
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#include "va_wayland_private.h"
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/* XXX: Wayland/EMGD support currently lives in libwayland-emgd.so.* library */
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#define LIBWAYLAND_EMGD_NAME "libwayland-emgd.so.1"
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typedef struct va_wayland_emgd_context {
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    struct va_wayland_context   base;
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    void                       *handle;
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    struct wl_emgd             *emgd;
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    void                       *emgd_interface;
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    unsigned int                is_created      : 1;
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    struct wl_registry         *registry;
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} VADisplayContextWaylandEMGD;
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static inline void
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wl_emgd_destroy(struct wl_emgd *emgd)
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{
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    wl_proxy_destroy((struct wl_proxy *)emgd);
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}
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static VAStatus
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va_DisplayContextGetDriverName(
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    VADisplayContextP pDisplayContext,
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    char            **driver_name_ptr
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)
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{
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    *driver_name_ptr = strdup("emgd");
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    return VA_STATUS_SUCCESS;
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}
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void
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va_wayland_emgd_destroy(VADisplayContextP pDisplayContext)
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{
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    VADriverContextP const ctx = pDisplayContext->pDriverContext;
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    VADisplayContextWaylandEMGD * const wl_emgd_ctx = pDisplayContext->opaque;
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    struct drm_state * const drm_state = ctx->drm_state;
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    if (wl_emgd_ctx->emgd) {
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        wl_emgd_destroy(wl_emgd_ctx->emgd);
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        wl_emgd_ctx->emgd = NULL;
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    }
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    wl_emgd_ctx->is_created = 0;
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    if (wl_emgd_ctx->handle) {
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        dlclose(wl_emgd_ctx->handle);
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        wl_emgd_ctx->handle = NULL;
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    }
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    if (drm_state) {
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        if (drm_state->fd >= 0) {
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            close(drm_state->fd);
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            drm_state->fd = -1;
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        }
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        free(ctx->drm_state);
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        ctx->drm_state = NULL;
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    }
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}
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static void
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registry_handle_global(
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    void               *data,
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    struct wl_registry *registry,
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    uint32_t            id,
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    const char         *interface,
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    uint32_t            version
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)
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{
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    VADisplayContextWaylandEMGD *wl_emgd_ctx = data;
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    if (strcmp(interface, "wl_emgd") == 0) {
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        wl_emgd_ctx->emgd =
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            wl_registry_bind(registry, id, wl_emgd_ctx->emgd_interface, 1);
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    }
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}
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static const struct wl_registry_listener registry_listener = {
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    registry_handle_global,
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    NULL,
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};
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bool
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va_wayland_emgd_create(VADisplayContextP pDisplayContext)
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{
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    VADriverContextP const ctx = pDisplayContext->pDriverContext;
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    VADisplayContextWaylandEMGD *wl_emgd_ctx;
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    struct drm_state *drm_state;
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    uint32_t id;
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    wl_emgd_ctx = malloc(sizeof(*wl_emgd_ctx));
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    if (!wl_emgd_ctx)
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        return false;
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    wl_emgd_ctx->base.destroy           = va_wayland_emgd_destroy;
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    wl_emgd_ctx->handle                 = NULL;
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    wl_emgd_ctx->emgd                   = NULL;
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    wl_emgd_ctx->emgd_interface         = NULL;
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    wl_emgd_ctx->is_created             = 0;
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    pDisplayContext->opaque             = wl_emgd_ctx;
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    pDisplayContext->vaGetDriverName    = va_DisplayContextGetDriverName;
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    drm_state = calloc(1, sizeof(struct drm_state));
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    if (!drm_state)
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        return false;
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    drm_state->fd        = -1;
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    drm_state->auth_type = 0;
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    ctx->drm_state       = drm_state;
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    wl_emgd_ctx->handle = dlopen(LIBWAYLAND_EMGD_NAME, RTLD_LAZY|RTLD_LOCAL);
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    if (!wl_emgd_ctx->handle)
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        return false;
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    wl_emgd_ctx->emgd_interface =
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        dlsym(wl_emgd_ctx->handle, "wl_emgd_interface");
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    if (!wl_emgd_ctx->emgd_interface)
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        return false;
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    wl_emgd_ctx->registry = wl_display_get_registry(ctx->native_dpy);
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    wl_registry_add_listener(wl_emgd_ctx->registry, ®istry_listener, wl_emgd_ctx);
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    wl_display_roundtrip(ctx->native_dpy);
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    /* registry_handle_global should have been called by the
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     * wl_display_roundtrip above
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     */
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    if (!wl_emgd_ctx->emgd)
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        return false;
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    return true;
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}