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screen-cast: Move DMA buffer allocation to MetaScreenCast

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The aim with centralizing it is to be able to apply global policy to DMA
buffer allocations, e.g. disabling due to various hueristics.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1318
This commit is contained in:
Jonas Ådahl 2020-06-17 17:48:05 +02:00 committed by Robert Mader
parent 60c8d227ea
commit d725acb267
3 changed files with 39 additions and 11 deletions
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18
src/backends/meta-screen-cast-stream-src.c
View File

@ -720,10 +720,10 @@ on_stream_add_buffer (void *data,
MetaScreenCastStreamSrc *src = data;
MetaScreenCastStreamSrcPrivate *priv =
meta_screen_cast_stream_src_get_instance_private (src);
CoglContext *context =
clutter_backend_get_cogl_context (clutter_get_default_backend ());
CoglRenderer *renderer = cogl_context_get_renderer (context);
g_autoptr (GError) error = NULL;
MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
MetaScreenCastSession *session = meta_screen_cast_stream_get_session (stream);
MetaScreenCast *screen_cast =
meta_screen_cast_session_get_screen_cast (session);
CoglDmaBufHandle *dmabuf_handle;
struct spa_buffer *spa_buffer = buffer->buffer;
struct spa_data *spa_data = spa_buffer->datas;
@ -735,13 +735,9 @@ on_stream_add_buffer (void *data,
spa_data[0].mapoffset = 0;
spa_data[0].maxsize = stride * priv->video_format.size.height;
dmabuf_handle = cogl_renderer_create_dma_buf (renderer,
priv->stream_width,
priv->stream_height,
&error);
if (error)
g_debug ("Error exporting DMA buffer handle: %s", error->message);
dmabuf_handle = meta_screen_cast_create_dma_buf_handle (screen_cast,
priv->stream_width,
priv->stream_height);
if (dmabuf_handle)
{

28
src/backends/meta-screen-cast.c
View File

@ -94,6 +94,34 @@ meta_screen_cast_get_backend (MetaScreenCast *screen_cast)
return screen_cast->backend;
}
CoglDmaBufHandle *
meta_screen_cast_create_dma_buf_handle (MetaScreenCast *screen_cast,
int width,
int height)
{
ClutterBackend *clutter_backend =
meta_backend_get_clutter_backend (screen_cast->backend);
CoglContext *cogl_context =
clutter_backend_get_cogl_context (clutter_backend);
CoglRenderer *cogl_renderer = cogl_context_get_renderer (cogl_context);
g_autoptr (GError) error = NULL;
CoglDmaBufHandle *dmabuf_handle;
dmabuf_handle = cogl_renderer_create_dma_buf (cogl_renderer,
width, height,
&error);
if (!dmabuf_handle)
{
g_warning ("Failed to allocate DMA buffer, "
"disabling DMA buffer based screen casting: %s",
error->message);
screen_cast->disable_dma_bufs = TRUE;
return NULL;
}
return dmabuf_handle;
}
static gboolean
register_remote_desktop_screen_cast_session (MetaScreenCastSession *session,
const char *remote_desktop_session_id,

4
src/backends/meta-screen-cast.h
View File

@ -56,6 +56,10 @@ GDBusConnection * meta_screen_cast_get_connection (MetaScreenCast *screen_cast);
MetaBackend * meta_screen_cast_get_backend (MetaScreenCast *screen_cast);
CoglDmaBufHandle * meta_screen_cast_create_dma_buf_handle (MetaScreenCast *screen_cast,
int width,
int height);
MetaScreenCast * meta_screen_cast_new (MetaBackend *backend,
MetaDbusSessionWatcher *session_watcher);