Update GObject introspection annotations for libvips/histogram directory

configure.ac

@@ -103,6 +103,7 @@ headers="\
 	foreign.h \
 	interpolate.h \
 	header.h \
+	histogram.h \
 	operation.h \
 	enumtypes.h \
 	conversion.h \

libvips/histogram/hist_cum.c

@@ -157,9 +157,9 @@ vips_hist_cum_init( VipsHistCum *hist_cum )
 }
 
 /**
- * vips_hist_cum:
+ * vips_hist_cum: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @...: %NULL-terminated list of optional named arguments
  *
  * Form cumulative histogram. 

libvips/histogram/hist_entropy.c

@@ -130,9 +130,9 @@ vips_hist_entropy_init( VipsHistEntropy *entropy )
 }
 
 /**
- * vips_hist_entropy:
+ * vips_hist_entropy: (method)
  * @in: input histogram 
- * @out: image entropy
+ * @out: (out): image entropy
  * @...: %NULL-terminated list of optional named arguments
  *
  * Estimate image entropy from a histogram. Entropy is calculated as:

libvips/histogram/hist_equal.c

@@ -137,9 +137,9 @@ vips_hist_equal_init( VipsHistEqual *equal )
 }
 
 /**
- * vips_hist_equal:
+ * vips_hist_equal: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @...: %NULL-terminated list of optional named arguments
  *
  * Optional arguments:

libvips/histogram/hist_ismonotonic.c

@@ -136,9 +136,9 @@ vips_hist_ismonotonic_init( VipsHistIsmonotonic *ismonotonic )
 }
 
 /**
- * vips_hist_ismonotonic:
+ * vips_hist_ismonotonic: (method)
  * @in: lookup-table to test
- * @out: set non-zero if @in is monotonic 
+ * @out: (out): set non-zero if @in is monotonic
  * @...: %NULL-terminated list of optional named arguments
  *
  * Test @in for monotonicity. @out is set non-zero if @in is monotonic.

libvips/histogram/hist_local.c

@@ -395,9 +395,9 @@ vips_hist_local_init( VipsHistLocal *local )
 }
 
 /**
- * vips_hist_local:
+ * vips_hist_local: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @width: width of region
  * @height: height of region
  * @...: %NULL-terminated list of optional named arguments

libvips/histogram/hist_match.c

@@ -177,10 +177,10 @@ vips_hist_match_init( VipsHistMatch *match )
 }
 
 /**
- * vips_hist_match:
+ * vips_hist_match: (method)
  * @in: input histogram
  * @ref: reference histogram 
- * @out: output histogram
+ * @out: (out): output histogram
  * @...: %NULL-terminated list of optional named arguments
  *
  * Adjust @in to match @ref. If @in and @ref are normalised

libvips/histogram/hist_norm.c

@@ -156,9 +156,9 @@ vips_hist_norm_init( VipsHistNorm *hist_norm )
 }
 
 /**
- * vips_hist_norm:
+ * vips_hist_norm: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @...: %NULL-terminated list of optional named arguments
  * 
  * Normalise histogram ... normalise range to make it square (ie. max ==

libvips/histogram/hist_plot.c

@@ -357,9 +357,9 @@ vips_hist_plot_init( VipsHistPlot *hist_plot )
 }
 
 /**
- * vips_hist_plot:
+ * vips_hist_plot: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @...: %NULL-terminated list of optional named arguments
  *
  * Plot a 1 by any or any by 1 image file as a max by any or 

libvips/histogram/maplut.c

@@ -724,9 +724,9 @@ vips_maplut_init( VipsMaplut *maplut )
 }
 
 /**
- * vips_maplut:
+ * vips_maplut: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @lut: look-up table
  * @...: %NULL-terminated list of optional named arguments
  *

libvips/histogram/percent.c

@@ -134,10 +134,10 @@ vips_percent_init( VipsPercent *percent )
 }
 
 /**
- * vips_percent:
+ * vips_percent: (method)
  * @in: input image
  * @percent: threshold percentage
- * @threshold: output threshold value
+ * @threshold: (out): output threshold value
  * @...: %NULL-terminated list of optional named arguments
  *
  * vips_percent() returns (through the @threshold parameter) the threshold 

libvips/histogram/stdif.c

@@ -360,9 +360,9 @@ vips_stdif_init( VipsStdif *stdif )
 }
 
 /**
- * vips_stdif:
+ * vips_stdif: (method)
  * @in: input image
- * @out: output image
+ * @out: (out): output image
  * @width: width of region
  * @height: height of region
  * @...: %NULL-terminated list of optional named arguments