Add some helper functions which will be put
into use by following patches.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
Makefile.objs | 1 +
qemu-pixman.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
qemu-pixman.h | 32 ++++++++++++++++++++++++++++++
3 files changed, 93 insertions(+), 0 deletions(-)
create mode 100644 qemu-pixman.c
create mode 100644 qemu-pixman.h
diff --git a/Makefile.objs b/Makefile.objs
index 74b3542..73dd3bc 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -64,6 +64,7 @@ common-obj-y = $(block-obj-y) blockdev.o block/
common-obj-y += net.o net/
common-obj-y += qom/
common-obj-y += readline.o console.o cursor.o
+common-obj-y += qemu-pixman.o
common-obj-y += $(oslib-obj-y)
common-obj-$(CONFIG_WIN32) += os-win32.o
common-obj-$(CONFIG_POSIX) += os-posix.o
diff --git a/qemu-pixman.c b/qemu-pixman.c
new file mode 100644
index 0000000..7547ed7
--- /dev/null
+++ b/qemu-pixman.c
@@ -0,0 +1,60 @@
+#include "qemu-pixman.h"
+
+int qemu_pixman_get_type(int rshift, int gshift, int bshift)
+{
+ int type = PIXMAN_TYPE_OTHER;
+
+ if (rshift > gshift && gshift > bshift) {
+ if (bshift == 0) {
+ type = PIXMAN_TYPE_ARGB;
+ } else {
+#if PIXMAN_VERSION >= PIXMAN_VERSION_ENCODE(0, 21, 8)
+ type = PIXMAN_TYPE_RGBA;
+#endif
+ }
+ } else if (rshift < gshift && gshift < bshift) {
+ if (rshift == 0) {
+ type = PIXMAN_TYPE_ABGR;
+ } else {
+ type = PIXMAN_TYPE_BGRA;
+ }
+ }
+ return type;
+}
+
+pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf)
+{
+ pixman_format_code_t format;
+ int type;
+
+ type = qemu_pixman_get_type(pf->rshift, pf->gshift, pf->bshift);
+ format = PIXMAN_FORMAT(pf->bits_per_pixel, type,
+ pf->abits, pf->rbits, pf->gbits, pf->bbits);
+ if (!pixman_format_supported_source(format)) {
+ return 0;
+ }
+ return format;
+}
+
+pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
+ int width)
+{
+ pixman_image_t *image = pixman_image_create_bits(format, width, 1, NULL,
0);
+ assert(image != NULL);
+ return image;
+}
+
+void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
+ int width, int y)
+{
+ pixman_image_composite(PIXMAN_OP_SRC, fb, NULL, linebuf,
+ 0, y, 0, 0, 0, 0, width, 1);
+}
+
+void qemu_pixman_image_unref(pixman_image_t *image)
+{
+ if (image == NULL) {
+ return;
+ }
+ pixman_image_unref(image);
+}
diff --git a/qemu-pixman.h b/qemu-pixman.h
new file mode 100644
index 0000000..7652c41
--- /dev/null
+++ b/qemu-pixman.h
@@ -0,0 +1,32 @@
+#ifndef QEMU_PIXMAN_H
+#define QEMU_PIXMAN_H
+
+#include <pixman.h>
+
+#include "console.h"
+
+/*
+ * pixman image formats are defined to be native endian,
+ * that means host byte order on qemu. So we go define
+ * fixed formats here for cases where it is needed, like
+ * feeding libjpeg / libpng and writing screenshots.
+ */
+
+#ifdef HOST_WORDS_BIGENDIAN
+# define PIXMAN_BE_r8g8b8 PIXMAN_r8g8b8
+#else
+# define PIXMAN_BE_r8g8b8 PIXMAN_b8g8r8
+#endif
+
+/* -------------------------------------------------------------------- */
+
+int qemu_pixman_get_type(int rshift, int gshift, int bshift);
+pixman_format_code_t qemu_pixman_get_format(PixelFormat *pf);
+
+pixman_image_t *qemu_pixman_linebuf_create(pixman_format_code_t format,
+ int width);
+void qemu_pixman_linebuf_fill(pixman_image_t *linebuf, pixman_image_t *fb,
+ int width, int y);
+void qemu_pixman_image_unref(pixman_image_t *image);
+
+#endif /* QEMU_PIXMAN_H */
--
1.7.1
