[PATCH v2 4/5] logo: Enable image format selection for the logo

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Enables the selection of an image format to be used for the built-in
barebox logo. The default image format is set to png, has it was the
only choice before. This also adds bmp as the other option.

Signed-off-by: Jules Maselbas <jmaselbas@xxxxxxxxx>
---
 lib/logo/Kconfig  | 20 +++++++++++++++++++-
 lib/logo/Makefile | 43 ++++++++++++++++++++++++++++++-------------
 lib/logo/logo.c   |  8 +++++++-
 3 files changed, 56 insertions(+), 15 deletions(-)

diff --git a/lib/logo/Kconfig b/lib/logo/Kconfig
index 7d55f7fa27..8edfaaeb51 100644
--- a/lib/logo/Kconfig
+++ b/lib/logo/Kconfig
@@ -3,10 +3,28 @@ menuconfig BAREBOX_LOGO
 	help
 	  Say yes here to build the barebox logos. This adds ImageMagick's
 	  convert tool to the build dependencies. The logo can be found under
-	  /logo/barebox-logo-<width>.png in the running barebox.
+	  /logo/barebox-logo-<width>.<ext> in the running barebox.
 
 if BAREBOX_LOGO
 
+choice
+	prompt "Logo image encoding format to be used"
+	default BAREBOX_LOGO_PNG
+
+config BAREBOX_LOGO_PNG
+	bool "png"
+	select PNG
+	help
+	  Encode logo with the PNG image format
+
+config BAREBOX_LOGO_BMP
+	bool "bmp"
+	select BMP
+	help
+	  Encode logo with the BMP image format
+
+endchoice
+
 config BAREBOX_LOGO_64
 	bool "include 64x32 pixel logo"
 
diff --git a/lib/logo/Makefile b/lib/logo/Makefile
index f08beef76b..04c4906838 100644
--- a/lib/logo/Makefile
+++ b/lib/logo/Makefile
@@ -1,17 +1,17 @@
 
-OPTS_barebox-logo-w64.bblogo = -resize 64
+OPTS_barebox-logo-w64 = -resize 64
 bblogo-$(CONFIG_BAREBOX_LOGO_64) += barebox-logo-w64
 
-OPTS_barebox-logo-w240.bblogo = -resize 240
+OPTS_barebox-logo-w240 = -resize 240
 bblogo-$(CONFIG_BAREBOX_LOGO_240) += barebox-logo-w240
 
-OPTS_barebox-logo-w320.bblogo = -resize 320
+OPTS_barebox-logo-w320 = -resize 320
 bblogo-$(CONFIG_BAREBOX_LOGO_320) += barebox-logo-w320
 
-OPTS_barebox-logo-w400.bblogo = -resize 400
+OPTS_barebox-logo-w400 = -resize 400
 bblogo-$(CONFIG_BAREBOX_LOGO_400) += barebox-logo-w400
 
-OPTS_barebox-logo-w640.bblogo = -resize 640
+OPTS_barebox-logo-w640 = -resize 640
 bblogo-$(CONFIG_BAREBOX_LOGO_640) += barebox-logo-w640
 
 obj-y += $(patsubst %,%.bblogo.o,$(bblogo-y))
@@ -38,15 +38,32 @@ cmd_logo_S =							\
 %.bblogo.S: %.bblogo FORCE
 	$(call if_changed,logo_S)
 
+quiet_cmd_logo = LOGO     $@
+      cmd_logo = cp $< $@
+
+ifdef CONFIG_BAREBOX_LOGO_PNG
+extra-y += $(patsubst %,%.png,$(bblogo-y))
+%.bblogo: %.png FORCE
+	$(call if_changed,logo)
+endif
+ifdef CONFIG_BAREBOX_LOGO_BMP
+extra-y += $(patsubst %,%.bmp,$(bblogo-y))
+%.bblogo: %.bmp FORCE
+	$(call if_changed,logo)
+endif
+
 CONVERTOPTS += -background none
 
-quiet_cmd_logo = PNG     $@
-cmd_logo =							\
-(								\
-	convert $(OPTS_$(@F)) $(CONVERTOPTS) $< png:$@; \
-)
+quiet_cmd_bmp = BMP     $@
+      cmd_bmp = convert $(OPTS_$(@F:.bmp=)) $(CONVERTOPTS) $< bmp:$@
 
-%.bblogo: $(srctree)/Documentation/barebox.svg FORCE
-	$(call if_changed,logo)
+%.bmp: $(srctree)/Documentation/barebox.svg FORCE
+	$(call if_changed,bmp)
+
+quiet_cmd_png = PNG     $@
+      cmd_png =	convert $(OPTS_$(@F:.png=)) $(CONVERTOPTS) $< png:$@
+
+%.png: $(srctree)/Documentation/barebox.svg FORCE
+	$(call if_changed,png)
 
-clean-files += *.bblogo *.bblogo.S
+clean-files += *.png *.bmp *.bblogo *.bblogo.S
diff --git a/lib/logo/logo.c b/lib/logo/logo.c
index 8349b060ac..200eb992b3 100644
--- a/lib/logo/logo.c
+++ b/lib/logo/logo.c
@@ -32,8 +32,14 @@ static void load_logo(int width, void *start, void *end)
 {
 	char *filename;
 	size_t size = end - start;
+	char *ext = "";
 
-	filename = basprintf("/logo/barebox-logo-%d.png", width);
+	if (IS_ENABLED(CONFIG_BAREBOX_LOGO_PNG))
+		ext = "png";
+	else if (IS_ENABLED(CONFIG_BAREBOX_LOGO_BMP))
+		ext = "bmp";
+
+	filename = basprintf("/logo/barebox-logo-%d.%s", width, ext);
 	write_file(filename, start, size);
 	free(filename);
 }
-- 
2.17.1


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