lib: Remove num_stripes from fpi_assemble_frames()

libfprint/drivers/aes1610.c

@@ -591,8 +591,7 @@ static void capture_read_strip_cb(FpiUsbTransfer *transfer, FpDevice *device,
 		aes_write_regv(dev, capture_stop, G_N_ELEMENTS(capture_stop), stub_capture_stop_cb, NULL);
 		self->strips = g_slist_reverse(self->strips);
 		fpi_do_movement_estimation(&assembling_ctx, self->strips);
-		img = fpi_assemble_frames(&assembling_ctx, self->strips,
-					  self->strips_len);
+		img = fpi_assemble_frames(&assembling_ctx, self->strips);
 
 		g_slist_free_full(self->strips, g_free);
 		self->strips = NULL;

libfprint/drivers/aes2501.c

@@ -437,8 +437,7 @@ static void capture_read_strip_cb(FpiUsbTransfer *transfer, FpDevice *_dev,
 			self->strips = g_slist_reverse(self->strips);
 			fpi_do_movement_estimation(&assembling_ctx, self->strips);
 			img = fpi_assemble_frames(&assembling_ctx,
-						  self->strips,
-						  self->strips_len);
+						  self->strips);
 			g_slist_free_full(self->strips, g_free);
 			self->strips = NULL;
 			self->strips_len = 0;

libfprint/drivers/aes2550.c

@@ -227,8 +227,7 @@ static void capture_set_idle_reqs_cb(FpiUsbTransfer *transfer,
 		FpImage *img;
 
 		self->strips = g_slist_reverse(self->strips);
-		img = fpi_assemble_frames(&assembling_ctx,
-					  self->strips, self->strips_len);
+		img = fpi_assemble_frames(&assembling_ctx, self->strips);
 		g_slist_free_full(self->strips, g_free);
 		self->strips = NULL;
 		self->strips_len = 0;

libfprint/drivers/aesx660.c

@@ -312,7 +312,7 @@ static void capture_set_idle_cmd_cb(FpiUsbTransfer *transfer, FpDevice *device,
 		FpImage *img;
 
 		priv->strips = g_slist_reverse(priv->strips);
-		img = fpi_assemble_frames(cls->assembling_ctx, priv->strips, priv->strips_len);
+		img = fpi_assemble_frames(cls->assembling_ctx, priv->strips);
 		g_slist_foreach(priv->strips, (GFunc) g_free, NULL);
 		g_slist_free(priv->strips);
 		priv->strips = NULL;

libfprint/drivers/elan.c

@@ -288,14 +288,12 @@ static void elan_process_frame_thirds(unsigned short *raw_frame,
 static void elan_submit_image(FpImageDevice *dev)
 {
 	FpiDeviceElan *self = FPI_DEVICE_ELAN(dev);
-	int num_frames;
 	GSList *raw_frames;
 	GSList *frames = NULL;
 	FpImage *img;
 
 	G_DEBUG_HERE();
 
-	num_frames = self->num_frames - ELAN_SKIP_LAST_FRAMES;
 	raw_frames = g_slist_nth(self->frames, ELAN_SKIP_LAST_FRAMES);
 
 	assembling_ctx.frame_width = self->frame_width;
@@ -303,7 +301,7 @@ static void elan_submit_image(FpImageDevice *dev)
 	assembling_ctx.image_width = self->frame_width * 3 / 2;
 	g_slist_foreach(raw_frames, (GFunc) self->process_frame, &frames);
 	fpi_do_movement_estimation(&assembling_ctx, frames);
-	img = fpi_assemble_frames(&assembling_ctx, frames, num_frames);
+	img = fpi_assemble_frames(&assembling_ctx, frames);
 
 	fpi_image_device_image_captured(dev, img);
 }

libfprint/fpi-assembling.c

@@ -269,48 +269,37 @@ aes_blit_stripe (struct fpi_frame_asmbl_ctx *ctx,
  * fpi_assemble_frames:
  * @ctx: #fpi_frame_asmbl_ctx - frame assembling context
  * @stripes: linked list of #fpi_frame
- * @num_stripes: number of items in @stripes to process
  *
  * fpi_assemble_frames() assembles individual frames into a single image.
  * It expects @delta_x and @delta_y of #fpi_frame to be populated.
  *
- * Note that @num_stripes might be shorter than the length of the list,
- * if some stripes should be skipped.
- *
  * Returns: a newly allocated #fp_img.
  */
 FpImage *
 fpi_assemble_frames (struct fpi_frame_asmbl_ctx *ctx,
-                     GSList *stripes, size_t num_stripes)
+                     GSList *stripes)
 {
-  GSList *stripe;
+  GSList *l;
   FpImage *img;
   int height = 0;
-  int i, y, x;
+  int y, x;
   gboolean reverse = FALSE;
   struct fpi_frame *fpi_frame;
 
   //FIXME g_return_if_fail
-  BUG_ON (num_stripes == 0);
+  g_return_val_if_fail (stripes != NULL, NULL);
   BUG_ON (ctx->image_width < ctx->frame_width);
 
-  /* Calculate height */
-  i = 0;
-  stripe = stripes;
-
   /* No offset for 1st image */
-  fpi_frame = stripe->data;
+  fpi_frame = stripes->data;
   fpi_frame->delta_x = 0;
   fpi_frame->delta_y = 0;
-  do
+  for (l = stripes; l != NULL; l = l->next)
     {
-      fpi_frame = stripe->data;
+      fpi_frame = l->data;
 
       height += fpi_frame->delta_y;
-      i++;
-      stripe = g_slist_next (stripe);
     }
-  while (i < num_stripes);
 
   fp_dbg ("height is %d", height);
 
@@ -331,14 +320,12 @@ fpi_assemble_frames (struct fpi_frame_asmbl_ctx *ctx,
   img->height = height;
 
   /* Assemble stripes */
-  i = 0;
-  stripe = stripes;
   y = reverse ? (height - ctx->frame_height) : 0;
   x = (ctx->image_width - ctx->frame_width) / 2;
 
-  do
+  for (l = stripes; l != NULL; l = l->next)
     {
-      fpi_frame = stripe->data;
+      fpi_frame = l->data;
 
       if(reverse)
         {
@@ -353,11 +340,7 @@ fpi_assemble_frames (struct fpi_frame_asmbl_ctx *ctx,
           y += fpi_frame->delta_y;
           x += fpi_frame->delta_x;
         }
-
-      stripe = g_slist_next (stripe);
-      i++;
     }
-  while (i < num_stripes);
 
   return img;
 }

libfprint/fpi-assembling.h

@@ -68,8 +68,7 @@ void fpi_do_movement_estimation (struct fpi_frame_asmbl_ctx *ctx,
                                  GSList                     *stripes);
 
 FpImage *fpi_assemble_frames (struct fpi_frame_asmbl_ctx *ctx,
-                              GSList                     *stripes,
-                              size_t                      num_stripes);
+                              GSList                     *stripes);
 
 /**
  * fpi_line_asmbl_ctx: