From 89b54dc15de5f3c27ce8bed9f1490b9b4ba16b35 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sesse@debian.org>
Date: Sat, 12 Jul 2008 23:22:49 +0200
Subject: [PATCH] Support progressive mode in JPEGs.

---
 libqscale.c | 5 +++++
 libqscale.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/libqscale.c b/libqscale.c
index c26a441..ab19365 100644
--- a/libqscale.c
+++ b/libqscale.c
@@ -608,6 +608,11 @@ int qscale_save_jpeg_to_stdio(const qscale_img *img, FILE *file, unsigned jpeg_q
         cinfo.input_components = 3;
         jpeg_set_defaults(&cinfo);
         jpeg_set_quality(&cinfo, jpeg_quality, FALSE);
+
+	if (jpeg_mode == PROGRESSIVE) {
+		jpeg_simple_progression(&cinfo);
+	}
+
         cinfo.image_width = img->width;
         cinfo.image_height = img->height;
         cinfo.raw_data_in = TRUE;
diff --git a/libqscale.h b/libqscale.h
index fd9b22f..0d23510 100644
--- a/libqscale.h
+++ b/libqscale.h
@@ -28,6 +28,7 @@ enum qscale_scaling_filter {
 
 enum qscale_jpeg_mode {
 	SEQUENTIAL = 0,
+	PROGRESSIVE = 1,
 };
 
 qscale_img *qscale_load_jpeg(const char *filename);
-- 
2.39.2