console: save current scanout details

Add a new DisplayScanout structure to save the current scanout details.
This allows to attach later UI backends and set the scanout.

Introduce displaychangelistener_display_console() helper function to
handle the dpy_gfx_switch/gl_scanout() & dpy_gfx_update() calls.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/include/ui/console.h b/include/ui/console.h
index eefd7e4dc1..f590819880 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -108,6 +108,17 @@ struct QemuConsoleClass {
 #define QEMU_ALLOCATED_FLAG     0x01
 #define QEMU_PLACEHOLDER_FLAG   0x02
 
+typedef struct ScanoutTexture {
+    uint32_t backing_id;
+    bool backing_y_0_top;
+    uint32_t backing_width;
+    uint32_t backing_height;
+    uint32_t x;
+    uint32_t y;
+    uint32_t width;
+    uint32_t height;
+} ScanoutTexture;
+
 typedef struct DisplaySurface {
     pixman_format_code_t format;
     pixman_image_t *image;
@@ -178,6 +189,22 @@ typedef struct QemuDmaBuf {
     bool      draw_submitted;
 } QemuDmaBuf;
 
+enum display_scanout {
+    SCANOUT_NONE,
+    SCANOUT_SURFACE,
+    SCANOUT_TEXTURE,
+    SCANOUT_DMABUF,
+};
+
+typedef struct DisplayScanout {
+    enum display_scanout kind;
+    union {
+        /* DisplaySurface *surface; is kept in QemuConsole */
+        ScanoutTexture texture;
+        QemuDmaBuf *dmabuf;
+    };
+} DisplayScanout;
+
 typedef struct DisplayState DisplayState;
 typedef struct DisplayGLCtx DisplayGLCtx;