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[chef.git] / cookbooks / imagery / files / default / osstvw_make_diffs

diff --git a/cookbooks/imagery/files/default/osstvw_make_diffs b/cookbooks/imagery/files/default/osstvw_make_diffs
index f4da6dffc2e0ec37efe54297d514b0e17f1c30f1..636c6f33459295d79eefefb0eb683d33de154eb7 100644 (file)
--- a/cookbooks/imagery/files/default/osstvw_make_diffs
+++ b/cookbooks/imagery/files/default/osstvw_make_diffs
@@ -30,8 +30,8 @@ for (( i=0; i<${OSSV_EDITIONS_LENGTH}; i++ )); do
         if [ ! -f "${FILE_1}" ]; then
           FILE_1="${OSSV_EDITIONS_TMP}/blue.png"
         fi
-        # Skip existing files
-        if [ ! -f "${OSSV_DIFF_NAME}/${FILE}" ]; then
+        # Skip existing files or excluded files
+        if [ ! -f "${OSSV_DIFF_NAME}/${FILE}" ] && [ ! -f "${OSSV_DIFF_NAME}/${FILE}.skip" ]; then
           echo Creating diff ${OSSV_EDITIONS[$i]} ${OSSV_EDITIONS[$o]} "${FILE_1}" "${OSSV_DIFF_NAME}/${FILE}"
           # Background compare + gdalcopyproj
           ((compare -quiet "${FILE_1}" "${FILE_2}" -compose Src -highlight-color Red -lowlight-color 'rgba(255,255,255,0)' -define tiff:tile-geometry=512x512 "${OSSV_DIFF_NAME}/${FILE}" || true) && python ${GDALCOPYPROJ} "${FILE_2}" "${OSSV_DIFF_NAME}/${FILE}" ) &
@@ -44,6 +44,33 @@ for (( i=0; i<${OSSV_EDITIONS_LENGTH}; i++ )); do
           done
         fi
       done < <(find "${OSSV_EDITIONS[$o]}" -maxdepth 1 -name '*.tif' -printf '%f\0')
+
+      # Wait for background jobs to finish
+      wait
+
+      echo "Removing empty diffs"
+      # TIF cleanup loop for images which have no diff
+      while IFS= read -r -d $'\0' FILE; do
+        ( FILE_COLOURS=$(identify -quiet -format '%k' "${OSSV_DIFF_NAME}/${FILE}")
+        if [ "$FILE_COLOURS" -lt "2" ]; then
+          rm -f "${OSSV_DIFF_NAME}/${FILE}"
+          touch "${OSSV_DIFF_NAME}/${FILE}.skip"
+        fi ) &
+
+        # Check how many background processes and wait if exceed
+        running=($(jobs -rp))
+        while [ ${#running[@]} -ge 16 ] ; do
+          sleep 1   # this is not optimal, but you can't use wait here
+          running=($(jobs -rp))
+        done
+      done < <(find "${OSSV_DIFF_NAME}" -maxdepth 1 -name '*.tif' -size -180000c -printf '%f\0')
+      # Wait for background jobs to finish
+      wait
+      if [ ! -f "ossv-${OSSV_DIFF_NAME}-combined.vrt" ]; then
+        gdalbuildvrt -resolution highest -hidenodata "ossv-${OSSV_DIFF_NAME}-combined.vrt" ${OSSV_DIFF_NAME}/*.tif
+      fi
     fi
   done
 done
+echo Now create external overview layers
+echo eg: gdaladdo --config GDAL_CACHEMAX=16000 -ro --config COMPRESS DEFLATE --config COMPRESS_OVERVIEW DEFLATE --config ZLEVEL 9 --config BIGTIFF_OVERVIEW IF_SAFER --config GDAL_TIFF_OVR_BLOCKSIZE 512 -r average ossv-2016-04-combined.vrt 4 16 64 256 1024 4096