[project @ 2004-03-17 21:05:55 by rjw]

Added basic framework for animation.

svn path=/import/netsurf/; revision=632

1 files changed, 43 insertions, 0 deletions

diff --git a/riscos/gif.h b/riscos/gif.h
index c0f467bda..107ceaed1 100644
--- a/riscos/gif.h
+++ b/riscos/gif.h
@@ -3,6 +3,7 @@
  * Licensed under the GNU General Public License,
  *                http://www.opensource.org/licenses/gpl-license
  * Copyright 2003 Philip Pemberton <philpem@users.sourceforge.net>
+ * Copyright 2004 Richard Wilson <not_ginger_matt@hotmail.com>
  */
 
 #ifndef _NETSURF_RISCOS_GIF_H_
@@ -14,16 +15,58 @@ struct content;
 
 struct content_gif_data {
 	unsigned long buffer_pos;
+
+        /*	The sprite area containing the 8bpp frames.
+	*/
 	osspriteop_area *sprite_area;
+	
+	/*	The sprite image of the current 8bpp frame
+	*/
 	char *sprite_image;
+	
+	/*	The sprite header of the current 32bpp image.
+	*/
+	osspriteop_header *buffer_header;
+
+	/**	The current frame number of the GIF to display, [0...(max-1)]
+	*/
+	unsigned int current_frame;
+	
+	/**	The current frame that we hold a 32bpp version of [0...(max-1)]
+	*/
+	unsigned int expanded_frame;
+
+	/**	Whether the GIF should be animated
+	*/
+	bool animate_gif;
+
+	/**	Whether the GIF should loop
+	*/
+	bool loop_gif;
+	
+	/**	The number of cs unprocessed as the next transition has
+		not yet occurred.
+	*/
+	unsigned int remainder_time;
+
+	/**	The total number of frames
+	*/
+	unsigned int total_frames;
+
+	/**	An array of times (in cs) for the frame transitions between each frame
+	*/
+	unsigned int *frame_transitions;
+	
 };
 
 void nsgif_init(void);
 void nsgif_create(struct content *c, const char *params[]);
 int nsgif_convert(struct content *c, unsigned int width, unsigned int height);
 void nsgif_destroy(struct content *c);
+int nsgif_animate(struct content *c, unsigned int advance_time);
 void nsgif_redraw(struct content *c, long x, long y,
 		unsigned long width, unsigned long height,
 		long clip_x0, long clip_y0, long clip_x1, long clip_y1,
 		float scale);
+osspriteop_header *nsgif_get_sprite_address(struct content *c, unsigned int frame);
 #endif