From 699c0ca6c802c66b7997b885bf0307889e5c3d66 Mon Sep 17 00:00:00 2001
From: Ramakrishnan Muthukrishnan <ram@rkrishnan.org>
Date: Wed, 9 Aug 2023 18:57:32 +0530
Subject: [PATCH] waterfall: a few todo items for performance
---
waterfall.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/waterfall.c b/waterfall.c
index 58d883d..46932aa 100644
--- a/waterfall.c
+++ b/waterfall.c
@@ -112,6 +112,12 @@ static gboolean waterfall_scroll_event_cb(GtkWidget *widget,
void waterfall_update(RECEIVER *rx) {
int i;
+ // New idea:
+ // 1. make a copy of the pixbuf using gdk_pixbuf_copy()
+ // 2. shift the waterfall left or right with gdk_pixbuf_copy_area()
+ // 3. fill the new line.
+ // 4. copy the new pixbuf to old (for now)
+ // 5. later try to get rid of the copy.
float *samples;
if (rx->pixbuf) {
unsigned char *pixels = gdk_pixbuf_get_pixels(rx->pixbuf);
--
2.45.2