mpegize: add support for dcraw_emu

mpegize.py

@@ -498,6 +498,19 @@ class Mpegize:
     def display_frames(m, v):
         return "%d frames %s" % (v, m.display_usec(v * 1000000 / 30.))
 
+    def dcraw_detect(m):
+        m.dcraw_bin = shutil.which("dcraw_emu")
+        if not m.dcraw_bin and os.path.isfile("/usr/lib/libraw/dcraw_emu"):
+            m.dcraw_bin = "/usr/lib/libraw/dcraw_emu"
+        if not m.dcraw_bin:
+            m.dcraw_bin = "dcraw"
+        return m.dcraw_bin
+
+    def tiffname(m, f):
+        if m.dcraw_bin == "dcraw":
+            f = f[:-4]
+        return f + '.tiff'
+
     def jpegize(m):
         i = 0
         os.chdir(m.base)
@@ -506,6 +519,7 @@ class Mpegize:
         l = list(l)
         l.sort()
         print("Have", m.display_frames(len(l)), "dngs")
+        m.dcraw_detect()
         for n in l:
             if n[-4:] != ".dng":
                 print("Something went terribly wrong")
@@ -514,7 +528,8 @@ class Mpegize:
             print("Message: %.0f%%" % ((100*i) / len(l)))
             sys.stdout.flush()
             base = n[:-4]
-            subprocess.run(['dcraw',
+            tiffname = m.tiffname(n)
+            subprocess.run([m.dcraw_bin,
                             '-w',      # -w Use camera white balance
                             '+M',      # +M use embedded color matrix
                             '-H', '2', # -H 2 Recover highlights by blending them
@@ -522,8 +537,8 @@ class Mpegize:
                             '-q', '0', # -q 0 Debayer with fast bi-linear interpolation
                             '-f',      # -f Interpolate RGGB as four colors
                             '-T', n])  # -T Output TIFF
-            subprocess.run(['convert', base+'.tiff', base+'.jpeg'])
+            subprocess.run(['convert', tiffname, base+'.jpeg'])
-            os.unlink(base+'.tiff')
+            os.unlink(tiffname)
             os.unlink(n)
             os.rename(base+'.jpeg', m.source+"/"+base+'.jpeg.sv')