1 files changed, 115 insertions, 0 deletions
diff --git a/trunk/formats/format_jpeg.c b/trunk/formats/format_jpeg.c
new file mode 100644
index 000000000..4d8d7855d
--- /dev/null
+++ b/trunk/formats/format_jpeg.c
@@ -0,0 +1,115 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief JPEG File format support.
+ * 
+ * \arg File name extension: jpeg, jpg
+ * \ingroup formats
+ */
+ 
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/mod_format.h"
+#include "asterisk/module.h"
+#include "asterisk/image.h"
+#include "asterisk/endian.h"
+
+static struct ast_frame *jpeg_read_image(int fd, int len)
+{
+	struct ast_frame fr;
+	int res;
+	char buf[65536];
+	if (len > sizeof(buf) || len < 0) {
+		ast_log(LOG_WARNING, "JPEG image too large to read\n");
+		return NULL;
+	}
+	res = read(fd, buf, len);
+	if (res < len) {
+		ast_log(LOG_WARNING, "Only read %d of %d bytes: %s\n", res, len, strerror(errno));
+	}
+	memset(&fr, 0, sizeof(fr));
+	fr.frametype = AST_FRAME_IMAGE;
+	fr.subclass = AST_FORMAT_JPEG;
+	fr.data = buf;
+	fr.src = "JPEG Read";
+	fr.datalen = len;
+	return ast_frisolate(&fr);
+}
+
+static int jpeg_identify(int fd)
+{
+	char buf[10];
+	int res;
+	res = read(fd, buf, sizeof(buf));
+	if (res < sizeof(buf))
+		return 0;
+	if (memcmp(buf + 6, "JFIF", 4))
+		return 0;
+	return 1;
+}
+
+static int jpeg_write_image(int fd, struct ast_frame *fr)
+{
+	int res=0;
+	if (fr->frametype != AST_FRAME_IMAGE) {
+		ast_log(LOG_WARNING, "Not an image\n");
+		return -1;
+	}
+	if (fr->subclass != AST_FORMAT_JPEG) {
+		ast_log(LOG_WARNING, "Not a jpeg image\n");
+		return -1;
+	}
+	if (fr->datalen) {
+		res = write(fd, fr->data, fr->datalen);
+		if (res != fr->datalen) {
+			ast_log(LOG_WARNING, "Only wrote %d of %d bytes: %s\n", res, fr->datalen, strerror(errno));
+			return -1;
+		}
+	}
+	return res;
+}
+
+static struct ast_imager jpeg_format = {
+	.name = "jpg",
+	.desc = "JPEG (Joint Picture Experts Group)",
+	.exts = "jpg|jpeg",
+	.format = AST_FORMAT_JPEG,
+	.read_image = jpeg_read_image,
+	.identify = jpeg_identify,
+	.write_image = jpeg_write_image,
+};
+
+static int load_module(void)
+{
+	if (ast_image_register(&jpeg_format))
+		return AST_MODULE_LOAD_FAILURE;
+	return AST_MODULE_LOAD_SUCCESS;
+}
+
+static int unload_module(void)
+{
+	ast_image_unregister(&jpeg_format);
+
+	return 0;
+}	
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "JPEG (Joint Picture Experts Group) Image Format");