From: Varad Gautam <varad.gau...@collabora.com>

handle create_immed() dmabuf import requests and support
zwp_linux_dmabuf_v1_interface version 2.

Signed-off-by: Varad Gautam <varad.gau...@collabora.com>
---
 libweston/linux-dmabuf.c | 62 +++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 51 insertions(+), 11 deletions(-)

diff --git a/libweston/linux-dmabuf.c b/libweston/linux-dmabuf.c
index 7b29f08..d70e906 100644
--- a/libweston/linux-dmabuf.c
+++ b/libweston/linux-dmabuf.c
@@ -140,12 +140,13 @@ destroy_linux_dmabuf_wl_buffer(struct wl_resource 
*resource)
 }
 
 static void
-params_create(struct wl_client *client,
-             struct wl_resource *params_resource,
-             int32_t width,
-             int32_t height,
-             uint32_t format,
-             uint32_t flags)
+params_create_common(struct wl_client *client,
+                    struct wl_resource *params_resource,
+                    uint32_t buffer_id,
+                    int32_t width,
+                    int32_t height,
+                    uint32_t format,
+                    uint32_t flags)
 {
        struct linux_dmabuf_buffer *buffer;
        int i;
@@ -260,7 +261,7 @@ params_create(struct wl_client *client,
 
        buffer->buffer_resource = wl_resource_create(client,
                                                     &wl_buffer_interface,
-                                                    1, 0);
+                                                    1, buffer_id);
        if (!buffer->buffer_resource) {
                wl_resource_post_no_memory(params_resource);
                goto err_buffer;
@@ -270,7 +271,10 @@ params_create(struct wl_client *client,
                                       &linux_dmabuf_buffer_implementation,
                                       buffer, destroy_linux_dmabuf_wl_buffer);
 
-       zwp_linux_buffer_params_v1_send_created(params_resource,
+       /* send 'created' event when the request is not for an immediate
+        * import, ie buffer_id is zero */
+       if (buffer_id == 0)
+               zwp_linux_buffer_params_v1_send_created(params_resource,
                                                buffer->buffer_resource);
 
        return;
@@ -280,17 +284,53 @@ err_buffer:
                buffer->user_data_destroy_func(buffer);
 
 err_failed:
-       zwp_linux_buffer_params_v1_send_failed(params_resource);
+       if (buffer_id == 0)
+               zwp_linux_buffer_params_v1_send_failed(params_resource);
+       else
+               /* since the behavior is undefined by the protocol in this
+                * case, we choose to treat it as an error and immediately
+                * kill the client instead of returning an invalid handle and
+                * waiting for it to be used.
+                */
+               wl_resource_post_error(params_resource,
+                       ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INVALID_WL_BUFFER,
+                       "importing the supplied dmabufs failed");
 
 err_out:
        linux_dmabuf_buffer_destroy(buffer);
 }
 
+static void
+params_create(struct wl_client *client,
+             struct wl_resource *params_resource,
+             int32_t width,
+             int32_t height,
+             uint32_t format,
+             uint32_t flags)
+{
+       params_create_common(client, params_resource, 0, width, height, format,
+                            flags);
+}
+
+static void
+params_create_immed(struct wl_client *client,
+                   struct wl_resource *params_resource,
+                   uint32_t buffer_id,
+                   int32_t width,
+                   int32_t height,
+                   uint32_t format,
+                   uint32_t flags)
+{
+       params_create_common(client, params_resource, buffer_id, width, height,
+                            format, flags);
+}
+
 static const struct zwp_linux_buffer_params_v1_interface
 zwp_linux_buffer_params_implementation = {
        params_destroy,
        params_add,
-       params_create
+       params_create,
+       params_create_immed
 };
 
 static void
@@ -454,7 +494,7 @@ WL_EXPORT int
 linux_dmabuf_setup(struct weston_compositor *compositor)
 {
        if (!wl_global_create(compositor->wl_display,
-                             &zwp_linux_dmabuf_v1_interface, 1,
+                             &zwp_linux_dmabuf_v1_interface, 2,
                              compositor, bind_linux_dmabuf))
                return -1;
 
-- 
2.6.2

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