From: Marc-André Lureau <marcandre.lur...@redhat.com>
This is a tiny subset of PIXMAN API that is used pervasively in QEMU
codebase to manage images and identify the underlying format.
It doesn't seems worth to wrap this in a QEMU-specific API.
Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com>
---
include/ui/pixman-compat.h | 190 +++++++++++++++++++++++++++++++++++++
include/ui/qemu-pixman.h | 2 +
2 files changed, 192 insertions(+)
create mode 100644 include/ui/pixman-compat.h
diff --git a/include/ui/pixman-compat.h b/include/ui/pixman-compat.h
new file mode 100644
index 0000000000..e511c8b946
--- /dev/null
+++ b/include/ui/pixman-compat.h
@@ -0,0 +1,190 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Tiny subset of PIXMAN API commonly used by QEMU.
+ *
+ * Copyright 1987, 1988, 1989, 1998 The Open Group
+ * Copyright 1987, 1988, 1989 Digital Equipment Corporation
+ * Copyright 1999, 2004, 2008 Keith Packard
+ * Copyright 2000 SuSE, Inc.
+ * Copyright 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * Copyright 2004, 2005, 2007, 2008, 2009, 2010 Red Hat, Inc.
+ * Copyright 2004 Nicholas Miell
+ * Copyright 2005 Lars Knoll & Zack Rusin, Trolltech
+ * Copyright 2005 Trolltech AS
+ * Copyright 2007 Luca Barbato
+ * Copyright 2008 Aaron Plattner, NVIDIA Corporation
+ * Copyright 2008 Rodrigo Kumpera
+ * Copyright 2008 André Tupinambá
+ * Copyright 2008 Mozilla Corporation
+ * Copyright 2008 Frederic Plourde
+ * Copyright 2009, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2009, 2010 Nokia Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef PIXMAN_COMPAT_H
+#define PIXMAN_COMPAT_H
+
+#define PIXMAN_TYPE_OTHER 0
+#define PIXMAN_TYPE_ARGB 2
+#define PIXMAN_TYPE_ABGR 3
+#define PIXMAN_TYPE_BGRA 8
+#define PIXMAN_TYPE_RGBA 9
+
+#define PIXMAN_FORMAT(bpp,type,a,r,g,b) (((bpp) << 24) | \
+ ((type) << 16) | \
+ ((a) << 12) | \
+ ((r) << 8) | \
+ ((g) << 4) | \
+ ((b)))
+
+#define PIXMAN_FORMAT_RESHIFT(val, ofs, num) \
+ (((val >> (ofs)) & ((1 << (num)) - 1)) << ((val >> 22) & 3))
+
+#define PIXMAN_FORMAT_BPP(f) PIXMAN_FORMAT_RESHIFT(f, 24, 8)
+#define PIXMAN_FORMAT_TYPE(f) (((f) >> 16) & 0x3f)
+#define PIXMAN_FORMAT_A(f) PIXMAN_FORMAT_RESHIFT(f, 12, 4)
+#define PIXMAN_FORMAT_R(f) PIXMAN_FORMAT_RESHIFT(f, 8, 4)
+#define PIXMAN_FORMAT_G(f) PIXMAN_FORMAT_RESHIFT(f, 4, 4)
+#define PIXMAN_FORMAT_B(f) PIXMAN_FORMAT_RESHIFT(f, 0, 4)
+#define PIXMAN_FORMAT_DEPTH(f) (PIXMAN_FORMAT_A(f) + \
+ PIXMAN_FORMAT_R(f) + \
+ PIXMAN_FORMAT_G(f) + \
+ PIXMAN_FORMAT_B(f))
+
+typedef enum {
+ /* 32bpp formats */
+ PIXMAN_a8r8g8b8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,8,8,8,8),
+ PIXMAN_x8r8g8b8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ARGB,0,8,8,8),
+ PIXMAN_a8b8g8r8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,8,8,8,8),
+ PIXMAN_x8b8g8r8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_ABGR,0,8,8,8),
+ PIXMAN_b8g8r8a8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_BGRA,8,8,8,8),
+ PIXMAN_b8g8r8x8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_BGRA,0,8,8,8),
+ PIXMAN_r8g8b8a8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_RGBA,8,8,8,8),
+ PIXMAN_r8g8b8x8 = PIXMAN_FORMAT(32,PIXMAN_TYPE_RGBA,0,8,8,8),
+ /* 24bpp formats */
+ PIXMAN_r8g8b8 = PIXMAN_FORMAT(24,PIXMAN_TYPE_ARGB,0,8,8,8),
+ PIXMAN_b8g8r8 = PIXMAN_FORMAT(24,PIXMAN_TYPE_ABGR,0,8,8,8),
+ /* 16bpp formats */
+ PIXMAN_r5g6b5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,5,6,5),
+ PIXMAN_a1r5g5b5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,1,5,5,5),
+ PIXMAN_x1r5g5b5 = PIXMAN_FORMAT(16,PIXMAN_TYPE_ARGB,0,5,5,5),
+} pixman_format_code_t;
+
+typedef struct pixman_image pixman_image_t;
+
+typedef void (* pixman_image_destroy_func_t)(pixman_image_t *image, void
*data);
+
+struct pixman_image {
+ int ref_count;
+ pixman_format_code_t format;
+ int width;
+ int height;
+ int stride;
+ uint8_t *data;
+ pixman_image_destroy_func_t destroy_func;
+ void *destroy_data;
+};
+
+typedef struct pixman_color {
+ uint16_t red;
+ uint16_t green;
+ uint16_t blue;
+ uint16_t alpha;
+} pixman_color_t;
+
+static inline pixman_image_t *pixman_image_create_bits(pixman_format_code_t
format,
+ int width,
+ int height,
+ uint32_t *bits,
+ int rowstride_bytes)
+{
+ pixman_image_t *i = g_new0(pixman_image_t, 1);
+
+ i->width = width;
+ i->height = height;
+ i->stride = rowstride_bytes ?: width *
DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8);
+ i->format = format;
+ i->data = bits ?: g_malloc0(rowstride_bytes * height);
+ i->ref_count = 1;
+
+ return i;
+}
+
+static inline pixman_image_t *pixman_image_ref(pixman_image_t *i)
+{
+ i->ref_count++;
+ return i;
+}
+
+static inline bool pixman_image_unref(pixman_image_t *i)
+{
+ i->ref_count--;
+
+ if (i->ref_count == 0) {
+ if (i->destroy_func) {
+ i->destroy_func (i, i->destroy_data);
+ g_free(i->data);
+ g_free(i);
+ }
+
+ return true;
+ }
+
+ return false;
+}
+
+static inline void pixman_image_set_destroy_function(pixman_image_t *i,
+
pixman_image_destroy_func_t func,
+ void *data)
+
+{
+ i->destroy_func = func;
+ i->destroy_data = data;
+}
+
+static inline uint8_t* pixman_image_get_data(pixman_image_t *i)
+{
+ return i->data;
+}
+
+static inline int pixman_image_get_height(pixman_image_t *i)
+{
+ return i->height;
+}
+
+static inline int pixman_image_get_width(pixman_image_t *i)
+{
+ return i->width;
+}
+
+static inline int pixman_image_get_stride(pixman_image_t *i)
+{
+ return i->stride;
+}
+
+static inline pixman_format_code_t pixman_image_get_format(pixman_image_t *i)
+{
+ return i->format;
+}
+
+#endif /* PIXMAN_COMPAT_H */
diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h
index 539c089f1d..9c693df8dd 100644
--- a/include/ui/qemu-pixman.h
+++ b/include/ui/qemu-pixman.h
@@ -12,6 +12,8 @@
#pragma GCC diagnostic ignored "-Wredundant-decls"
#include <pixman.h>
#pragma GCC diagnostic pop
+#else
+#include "pixman-compat.h"
#endif
/*
--
2.41.0
