Fix supported vs available format descriptions

xbob/io/externals.cpp

@@ -677,10 +677,11 @@ built-in input formats for videos that are available, but **not\n\
 necessarily supported** by this library.\n\
 ");
 
-static PyObject* get_video_oformats(void (*f)(std::map<std::string, AVOutputFormat*>&)) {
+static PyObject* get_video_oformats(bool supported) {
 
   std::map<std::string, AVOutputFormat*> m;
-  f(m);
+  if (supported) bob::io::detail::ffmpeg::oformats_supported(m);
+  else bob::io::detail::ffmpeg::oformats_installed(m);
   
   PyObject* retval = PyDict_New();
   if (!retval) return 0;
@@ -723,6 +724,7 @@ static PyObject* get_video_oformats(void (*f)(std::map<std::string, AVOutputForm
     }
 
     for (auto ext=exts.begin(); ext!=exts.end(); ++ext) {
+
       if (!list_append(ext_list, ext->c_str())) {
         Py_DECREF(ext_list);
         Py_DECREF(property);
@@ -763,9 +765,17 @@ static PyObject* get_video_oformats(void (*f)(std::map<std::string, AVOutputForm
     }
 
     /** get supported codec list **/
+    if (supported) {
       std::vector<const AVCodec*> codecs;
       bob::io::detail::ffmpeg::oformat_supported_codecs(k->second->name, codecs);
+
       PyObject* supported_codecs = PyDict_New();
+      if (!supported_codecs) {
+        Py_DECREF(property);
+        Py_DECREF(retval);
+        return 0;
+      }
+
       for (auto c=codecs.begin(); c!=codecs.end(); ++c) {
         PyObject* codec_descr = describe_codec(*c);
         if (!codec_descr) {
@@ -786,6 +796,7 @@ static PyObject* get_video_oformats(void (*f)(std::map<std::string, AVOutputForm
         Py_DECREF(retval);
         return 0;
       }
+    }
 
     if (!dict_steal(retval, k->first.c_str(), property)) {
       Py_DECREF(retval);
@@ -799,11 +810,11 @@ static PyObject* get_video_oformats(void (*f)(std::map<std::string, AVOutputForm
 }
   
 static PyObject* PyBobIo_SupportedOutputFormats(PyObject*) {
-  return get_video_oformats(&bob::io::detail::ffmpeg::oformats_supported); 
+  return get_video_oformats(true);
 }
 
 static PyObject* PyBobIo_AvailableOutputFormats(PyObject*) {
-  return get_video_oformats(&bob::io::detail::ffmpeg::oformats_installed); 
+  return get_video_oformats(false);
 }
 
 PyDoc_STRVAR(s_supported_oformats_str, "supported_videowriter_formats");

xbob/io/script/video_test.py

@@ -44,6 +44,8 @@ def list_codecs(*args, **kwargs):
 
 def list_all_codecs(*args, **kwargs):
 
+  from .._externals import supported_video_codecs, available_video_codecs
+
   CODECS = supported_video_codecs()
   ALL_CODECS = available_video_codecs()
 

xbob/io/utils.py

@@ -61,7 +61,7 @@ def print_numbers(frame, counter, format, fontsize):
   img = Image.fromstring('RGB', (frame.shape[1], frame.shape[2]), frame.transpose(1,2,0).tostring())
   draw = ImageDraw.Draw(img)
   draw.text((x_pos, y_pos), text, font=font, fill=(255,255,255))
-  return numpy.asarray(img).transpose(2,0,1).copy()
+  return numpy.asarray(img).transpose(2,0,1)
 
 def generate_colors(height, width, shift):
   """Generates an image that serves as a test pattern for encoding/decoding and