Initial revision

1 files changed, 103 insertions, 0 deletions

diff --git a/wr/write-jpeg.c b/wr/write-jpeg.c
new file mode 100644
index 0000000..2e39c68
--- /dev/null
+++ b/wr/write-jpeg.c
@@ -0,0 +1,103 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+#include <errno.h>
+#include <jpeglib.h>
+
+#include "readers.h"
+#include "writers.h"
+#include "misc.h"
+
+#include <X11/Xlib.h>
+#include <X11/Intrinsic.h>
+#include <Xm/Xm.h>
+#include <Xm/Text.h>
+#include <Xm/SelectioB.h>
+#include "RegEdit.h"
+#include "ida.h"
+#include "viewer.h"
+
+/* ---------------------------------------------------------------------- */
+/* jpeg writer                                                            */
+
+static Widget jpeg_shell;
+static Widget jpeg_text;
+static int jpeg_quality = 75;
+
+static void
+jpeg_button_cb(Widget widget, XtPointer clientdata, XtPointer call_data)
+{
+    XmSelectionBoxCallbackStruct *cb = call_data;
+
+    if (XmCR_OK == cb->reason) {
+	jpeg_quality = atoi(XmTextGetString(jpeg_text));
+	do_save_print();
+    }
+    XtUnmanageChild(jpeg_shell);
+}
+
+static int
+jpeg_conf(Widget parent, struct ida_image *img)
+{
+    char tmp[32];
+    
+    if (!jpeg_shell) {
+	/* build dialog */
+	jpeg_shell = XmCreatePromptDialog(parent,"jpeg",NULL,0);
+	XmdRegisterEditres(XtParent(jpeg_shell));
+	XtUnmanageChild(XmSelectionBoxGetChild(jpeg_shell,XmDIALOG_HELP_BUTTON));
+        jpeg_text = XmSelectionBoxGetChild(jpeg_shell,XmDIALOG_TEXT);
+	XtAddCallback(jpeg_shell,XmNokCallback,jpeg_button_cb,NULL);
+	XtAddCallback(jpeg_shell,XmNcancelCallback,jpeg_button_cb,NULL);
+    }
+    sprintf(tmp,"%d",jpeg_quality);
+    XmTextSetString(jpeg_text,tmp);
+    XtManageChild(jpeg_shell);
+    return 0;
+}
+
+static int
+jpeg_write(FILE *fp, struct ida_image *img)
+{
+    struct jpeg_compress_struct cinfo;
+    struct jpeg_error_mgr jerr;
+    unsigned char *line;
+    unsigned int i;
+
+    cinfo.err = jpeg_std_error(&jerr);
+    jpeg_create_compress(&cinfo);
+    jpeg_stdio_dest(&cinfo, fp);
+    cinfo.image_width  = img->i.width;
+    cinfo.image_height = img->i.height;
+    if (img->i.dpi) {
+	cinfo.density_unit = 1;
+	cinfo.X_density = img->i.dpi;
+	cinfo.Y_density = img->i.dpi;
+    }
+    cinfo.input_components = 3;
+    cinfo.in_color_space = JCS_RGB;
+    jpeg_set_defaults(&cinfo);
+    jpeg_set_quality(&cinfo, jpeg_quality, TRUE);
+    jpeg_start_compress(&cinfo, TRUE);
+
+    for (i = 0, line = img->data; i < img->i.height; i++, line += img->i.width*3)
+        jpeg_write_scanlines(&cinfo, &line, 1);
+    
+    jpeg_finish_compress(&(cinfo));
+    jpeg_destroy_compress(&(cinfo));
+    return 0;
+}
+
+struct ida_writer jpeg_writer = {
+    label:  "JPEG",
+    ext:    { "jpg", "jpeg", NULL},
+    write:  jpeg_write,
+    conf:   jpeg_conf,
+};
+
+static void __init init_wr(void)
+{
+    write_register(&jpeg_writer);
+}
+