From 6d690577ffa6cb51a101c15c5634e719583f1fec Mon Sep 17 00:00:00 2001
From: Igor Murzov <igor@gplsoft.org>
Date: Sun, 1 May 2011 04:37:03 +0400
Subject: add support for webp image format

---
 GNUmakefile    |  9 ++++--
 fbi.man        |  4 +--
 rd/read-webp.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 101 insertions(+), 5 deletions(-)
 create mode 100644 rd/read-webp.c

diff --git a/GNUmakefile b/GNUmakefile
index 1ef958b..c96e635 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -46,6 +46,7 @@ HAVE_LIBPCD	:= $(call ac_lib,pcd_open,pcd)
 HAVE_LIBUNGIF	:= $(call ac_lib,DGifOpenFileName,ungif)
 HAVE_LIBPNG	:= $(call ac_lib,png_read_info,png,-lz)
 HAVE_LIBTIFF	:= $(call ac_lib,TIFFOpen,tiff)
+HAVE_LIBWEBP	:= $(call ac_lib,WebPDecodeRGBA,webp)
 #HAVE_LIBMAGICK	:= $(call ac_binary,Magick-config)
 HAVE_LIBSANE	:= $(call ac_lib,sane_init,sane)
 HAVE_LIBCURL	:= $(call ac_lib,curl_easy_init,curl)
@@ -73,9 +74,9 @@ endif
 # conditional stuff
 
 includes        = ENDIAN_H STRCASESTR NEW_EXIF
-libraries       = PCD UNGIF PNG TIFF CURL SANE LIRC
-ida_libs	= PCD UNGIF PNG TIFF CURL SANE
-fbi_libs	= PCD UNGIF PNG TIFF CURL LIRC
+libraries       = PCD UNGIF PNG TIFF WEBP CURL SANE LIRC
+ida_libs	= PCD UNGIF PNG TIFF WEBP CURL SANE
+fbi_libs	= PCD UNGIF PNG TIFF WEBP CURL LIRC
 
 #MAGICK_CFLAGS	= $(shell Magick-config --cflags)
 #MAGICK_LDFLAGS	= $(shell Magick-config --ldflags)
@@ -84,6 +85,7 @@ fbi_libs	= PCD UNGIF PNG TIFF CURL LIRC
 
 PNG_LDLIBS	:= -lpng -lz
 TIFF_LDLIBS	:= -ltiff
+WEBP_LDLIBS	:= -lwebp
 PCD_LDLIBS	:= -lpcd
 UNGIF_LDLIBS	:= -lungif
 SANE_LDLIBS	:= -lsane
@@ -92,6 +94,7 @@ LIRC_LDLIBS     := -llirc_client
 
 PNG_OBJS	:= rd/read-png.o  wr/write-png.o
 TIFF_OBJS	:= rd/read-tiff.o wr/write-tiff.o
+WEBP_OBJS	:= rd/read-webp.o
 PCD_OBJS	:= rd/read-pcd.o
 UNGIF_OBJS	:= rd/read-gif.o
 SANE_OBJS	:= sane.o
diff --git a/fbi.man b/fbi.man
index e04af2f..46fc8c6 100644
--- a/fbi.man
+++ b/fbi.man
@@ -13,8 +13,8 @@ fbi - Linux framebuffer imageviewer
 .BR fbi
 displays the specified file(s) on the linux console using the
 framebuffer device.
-\fIPhotoCD\fP, \fIjpeg\fP, \fIppm\fP,  \fIgif\fP, \fItiff\fP, \fIxwd\fP,
-\fIbmp\fP and \fIpng\fP are supported directly.
+\fIPhotoCD\fP, \fIjpeg\fP, \fIppm\fP, \fIgif\fP, \fItiff\fP, \fIxwd\fP,
+\fIbmp\fP, \fIpng\fP and \fIwebp\fP are supported directly.
 For other formats
 .BR fbi
 tries to use
diff --git a/rd/read-webp.c b/rd/read-webp.c
new file mode 100644
index 0000000..0dfe372
--- /dev/null
+++ b/rd/read-webp.c
@@ -0,0 +1,93 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <webp/decode.h>
+
+#include "readers.h"
+
+
+struct webp_state {
+	FILE *f;
+	int width, height;
+	uint8_t *data;
+};
+
+static void *
+webp_init(FILE *fp, char *filename, unsigned int page,
+          struct ida_image_info *i, int thumbnail)
+{
+	uint32_t img_size;
+	void *img;
+	struct webp_state *h;
+	h = malloc(sizeof(*h));
+
+	h->f = fp;
+	if(fseek(fp, 0, SEEK_END) != 0)
+	{
+		free(h);
+		return NULL;
+	}
+	img_size = ftell(fp);
+	img = malloc(img_size);
+
+	if(fseek(fp, 0, SEEK_SET) != 0)
+	{
+		free(img);
+		free(h);
+		return NULL;
+	}
+	if(fread(img, img_size, 1, fp) != 1)
+	{
+		free(img);
+		free(h);
+		return NULL;
+	}
+
+	h->data = WebPDecodeRGBA(img, img_size, &h->width, &h->height);
+
+	i->width = h->width;
+	i->height = h->height;
+	i->dpi = 100;
+	i->npages = 1;
+
+	free(img);
+
+	return h;
+}
+
+
+static void
+webp_read(unsigned char *dst, unsigned int line, void *data)
+{
+	struct webp_state *h = data;
+
+	load_rgba(dst, h->data + line * 4 * h->width, h->width);
+}
+
+
+static void
+webp_done(void *data)
+{
+	struct webp_state *h = data;
+
+	free(h->data);
+	fclose(h->f);
+	free(h);
+}
+
+
+static struct ida_loader webp_loader = {
+    magic: "WEBPVP8",
+    moff:  8,
+    mlen:  7,
+    name:  "libwebp",
+    init:  webp_init,
+    read:  webp_read,
+    done:  webp_done,
+};
+
+
+static void __init init_rd(void)
+{
+    load_register(&webp_loader);
+}
-- 
cgit