From df989559119707094b17269d025bcdf83df765f1 Mon Sep 17 00:00:00 2001
From: Tarun Gupta <tgupta@redhat.com>
Date: Wed, 20 Jun 2018 18:54:17 +0200
Subject: [PATCH 09/17] ui/pixman: add qemu_drm_format_to_pixman()

RH-Author: Tarun Gupta <tgupta@redhat.com>
Message-id: <1529520865-18127-4-git-send-email-tgupta@redhat.com>
Patchwork-id: 80911
O-Subject: [RHEL7.6 qemu-kvm PATCH v3 03/11] ui/pixman: add qemu_drm_format_to_pixman()
Bugzilla: 1555246
RH-Acked-by: Alex Williamson <alex.williamson@redhat.com>
RH-Acked-by: Gerd Hoffmann <kraxel@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>

Map drm fourcc codes to pixman formats.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed by: Kirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

(cherry picked from a5127bd73f77b90b50d63014be10cef467c1c3f9)

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 include/ui/qemu-pixman.h |  6 ++++++
 ui/qemu-pixman.c         | 22 ++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h
index 500725c..8deb008 100644
--- a/include/ui/qemu-pixman.h
+++ b/include/ui/qemu-pixman.h
@@ -27,9 +27,13 @@
 
 #ifdef HOST_WORDS_BIGENDIAN
 # define PIXMAN_BE_r8g8b8     PIXMAN_r8g8b8
+# define PIXMAN_LE_r8g8b8     PIXMAN_b8g8r8
+# define PIXMAN_LE_a8r8g8b8   PIXMAN_b8g8r8a8
 # define PIXMAN_LE_x8r8g8b8   PIXMAN_b8g8r8x8
 #else
 # define PIXMAN_BE_r8g8b8     PIXMAN_b8g8r8
+# define PIXMAN_LE_r8g8b8     PIXMAN_r8g8b8
+# define PIXMAN_LE_a8r8g8b8   PIXMAN_a8r8g8b8
 # define PIXMAN_LE_x8r8g8b8   PIXMAN_x8r8g8b8
 #endif
 
@@ -46,6 +50,8 @@ pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format,
                                           pixman_image_t *image);
 void qemu_pixman_image_unref(pixman_image_t *image);
 
+pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format);
+
 pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color);
 pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
                                                unsigned int ch);
diff --git a/ui/qemu-pixman.c b/ui/qemu-pixman.c
index 254bd8c..4be422c 100644
--- a/ui/qemu-pixman.c
+++ b/ui/qemu-pixman.c
@@ -5,6 +5,28 @@
 
 #include "qemu-common.h"
 #include "ui/console.h"
+#include "drm_fourcc.h"
+
+/* Note: drm is little endian, pixman is native endian */
+pixman_format_code_t qemu_drm_format_to_pixman(uint32_t drm_format)
+{
+    static const struct {
+        uint32_t drm_format;
+        pixman_format_code_t pixman;
+    } map[] = {
+        { DRM_FORMAT_RGB888,   PIXMAN_LE_r8g8b8   },
+        { DRM_FORMAT_ARGB8888, PIXMAN_LE_a8r8g8b8 },
+        { DRM_FORMAT_XRGB8888, PIXMAN_LE_x8r8g8b8 }
+    };
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(map); i++) {
+        if (drm_format == map[i].drm_format) {
+            return map[i].pixman;
+        }
+    }
+    return 0;
+}
 
 int qemu_pixman_get_type(int rshift, int gshift, int bshift)
 {
-- 
1.8.3.1