From 5b7c7a70078cb688e1c5bdf8ee9350281c2d8708 Mon Sep 17 00:00:00 2001
From: Fabian Schlenz <mail@fabianonline.de>
Date: Thu, 6 Jun 2019 06:39:52 +0200
Subject: [PATCH] gif2c: Now has an option --full-frames which encodes every
 frame completely, without the "leave the previous pixel intact" bits.

---
 src/tools/gif2c.rb | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/src/tools/gif2c.rb b/src/tools/gif2c.rb
index 03f5e89..ac19add 100755
--- a/src/tools/gif2c.rb
+++ b/src/tools/gif2c.rb
@@ -48,29 +48,26 @@ def compress(data, use_cutoff=true)
 	return result
 end
 		
-unless ARGV[0] && ARGV[1]
+unless ARGV[0]
 	puts "Usage:"
-	puts "#{$0} <gif_file> <variable_name>"
-	puts "e.g. '#{$0} mario.gif mario'"
+	puts "#{$0} <gif_file> [OPTIONS]"
+	puts "e.g. '#{$0} mario.gif'"
+	puts
+	puts "OPTIONS:"
+	puts "  --full-frames         Don't use optimiziation; output each frame as full frame."
 	puts
 	puts "Resulting data format is described in animations.h"
 	exit 1
 end	
 
 image_file=ARGV[0]
-name=ARGV[1]
+full_frames = ARGV.include?("--full-frames")
+name=File.basename(image_file, File.extname(image_file))
 frames = Magick::ImageList.new(image_file)
 
 STDERR.puts "Found #{frames.count} frames."
 
-STDERR.puts "Getting delays..."
 ticks_per_second = frames.ticks_per_second
-times = [] ; frames.each{|f| times << (1000.0 / ticks_per_second * f.delay).round}
-individual_frame_times = true
-if times.uniq.count==1
-	individual_frame_times = false
-	times = times[0, 1]
-end
 
 total_x, total_y = frames.first.columns, frames.first.rows
 
@@ -128,7 +125,7 @@ frames.each_with_index do |frame, index|
 				color = frame.pixel_color(x, y).to_color(Magick::AllCompliance, true, 8, true)[1,8].to_i(16)
 				p_color = p_frame.pixel_color(x, y).to_color(Magick::AllCompliance, true, 8, true)[1,8].to_i(16)
 				
-				if color==p_color
+				if color==p_color && !full_frames
 					data << 0
 				elsif transparent.include? color
 					data << 1
@@ -149,18 +146,21 @@ frames.each_with_index do |frame, index|
 	p_frame = frame
 	
 	if DEBUG
-		puts "Frame ##{index}:"
+		STDERR.puts "Frame ##{index}:"
 		total_y.times do |y|
 			total_x.times do |x|
-				print data[x + y*total_x]==0 ? "." : "X"
+				STDERR.print data[x + y*total_x]==0 ? "." : "X"
 			end
-			puts
+			STDERR.puts
 		end
 	end
 end
 
 data = frames_data.map{|d| compress(d, true)}
 
+individual_frame_times = times.uniq.count>1
+times = [times[0]] unless individual_frame_times
+
 puts "uint8_t animation_#{name}_data[] PROGMEM = {\n  #{data.map{|d| d.join(",")}.join(",\n  ")}\n};"
 puts "uint16_t animation_#{name}_delays[] = {#{times.join(",")}};"
 s=0
@@ -172,7 +172,7 @@ STDERR.puts
 STDERR.puts "Space usage:"
 STDERR.puts "  Colors:      %6d bytes." % [s1=(colors.count-2) * 3] # colors are 3-bytes, but we have to use uint32_t, which takes up 4 bytes.
 STDERR.puts "  Data:        %6d bytes." % [s2=data.flatten.count]
-STDERR.puts "  Delays:      %6d bytes." % [s5=times.count * 3 + 1]
+STDERR.puts "  Delays:      %6d bytes." % [s5=times.count * 2 + 1]
 STDERR.puts "  Offsets:     %6d bytes." % [s3=data.count * 2]
 STDERR.puts "  TOTAL:       %6d bytes." % [s1+s2+s3+s5]
 STDERR.puts "Original size: %6d bytes." % [s4=File.new(image_file).size]