dashdemux: Add properties to select maximum allowed width/height and framerate

https://bugzilla.gnome.org/show_bug.cgi?id=770408

ext/dash/gstdashdemux.c

@@ -189,6 +189,9 @@ enum
   PROP_MAX_BUFFERING_TIME,
   PROP_BANDWIDTH_USAGE,
   PROP_MAX_BITRATE,
+  PROP_MAX_VIDEO_WIDTH,
+  PROP_MAX_VIDEO_HEIGHT,
+  PROP_MAX_VIDEO_FRAMERATE,
   PROP_PRESENTATION_DELAY,
   PROP_LAST
 };
@@ -196,7 +199,11 @@ enum
 /* Default values for properties */
 #define DEFAULT_MAX_BUFFERING_TIME       30     /* in seconds */
 #define DEFAULT_BANDWIDTH_USAGE         0.8     /* 0 to 1     */
-#define DEFAULT_MAX_BITRATE        24000000     /* in bit/s  */
+#define DEFAULT_MAX_BITRATE               0     /* in bit/s  */
+#define DEFAULT_MAX_VIDEO_WIDTH           0
+#define DEFAULT_MAX_VIDEO_HEIGHT          0
+#define DEFAULT_MAX_VIDEO_FRAMERATE_N     0
+#define DEFAULT_MAX_VIDEO_FRAMERATE_D     1
 #define DEFAULT_PRESENTATION_DELAY     NULL     /* zero */
 
 /* Clock drift compensation for live streams */
@@ -418,8 +425,27 @@ gst_dash_demux_class_init (GstDashDemuxClass * klass)
 
   g_object_class_install_property (gobject_class, PROP_MAX_BITRATE,
       g_param_spec_uint ("max-bitrate", "Max bitrate",
-          "Max of bitrate supported by target decoder",
+          "Max of bitrate supported by target video decoder (0 = no maximum)",
-          1000, G_MAXUINT, DEFAULT_MAX_BITRATE,
+          0, G_MAXUINT, DEFAULT_MAX_BITRATE,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (gobject_class, PROP_MAX_VIDEO_WIDTH,
+      g_param_spec_uint ("max-video-width", "Max video width",
+          "Max video width to select (0 = no maximum)",
+          0, G_MAXUINT, DEFAULT_MAX_VIDEO_WIDTH,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (gobject_class, PROP_MAX_VIDEO_HEIGHT,
+      g_param_spec_uint ("max-video-height", "Max video height",
+          "Max video height to select (0 = no maximum)",
+          0, G_MAXUINT, DEFAULT_MAX_VIDEO_HEIGHT,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_property (gobject_class, PROP_MAX_VIDEO_FRAMERATE,
+      gst_param_spec_fraction ("max-video-framerate", "Max video framerate",
+          "Max video framerate to select (0/1 = no maximum)",
+          0, 1, G_MAXINT, 1, DEFAULT_MAX_VIDEO_FRAMERATE_N,
+          DEFAULT_MAX_VIDEO_FRAMERATE_D,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
   g_object_class_install_property (gobject_class, PROP_PRESENTATION_DELAY,
@@ -492,6 +518,10 @@ gst_dash_demux_init (GstDashDemux * demux)
   /* Properties */
   demux->max_buffering_time = DEFAULT_MAX_BUFFERING_TIME * GST_SECOND;
   demux->max_bitrate = DEFAULT_MAX_BITRATE;
+  demux->max_video_width = DEFAULT_MAX_VIDEO_WIDTH;
+  demux->max_video_height = DEFAULT_MAX_VIDEO_HEIGHT;
+  demux->max_video_framerate_n = DEFAULT_MAX_VIDEO_FRAMERATE_N;
+  demux->max_video_framerate_d = DEFAULT_MAX_VIDEO_FRAMERATE_D;
   demux->default_presentation_delay = DEFAULT_PRESENTATION_DELAY;
 
   g_mutex_init (&demux->client_lock);
@@ -517,6 +547,16 @@ gst_dash_demux_set_property (GObject * object, guint prop_id,
     case PROP_MAX_BITRATE:
       demux->max_bitrate = g_value_get_uint (value);
       break;
+    case PROP_MAX_VIDEO_WIDTH:
+      demux->max_video_width = g_value_get_uint (value);
+      break;
+    case PROP_MAX_VIDEO_HEIGHT:
+      demux->max_video_height = g_value_get_uint (value);
+      break;
+    case PROP_MAX_VIDEO_FRAMERATE:
+      demux->max_video_framerate_n = gst_value_get_fraction_numerator (value);
+      demux->max_video_framerate_d = gst_value_get_fraction_denominator (value);
+      break;
     case PROP_PRESENTATION_DELAY:
       g_free (demux->default_presentation_delay);
       demux->default_presentation_delay = g_value_dup_string (value);
@@ -544,6 +584,16 @@ gst_dash_demux_get_property (GObject * object, guint prop_id, GValue * value,
     case PROP_MAX_BITRATE:
       g_value_set_uint (value, demux->max_bitrate);
       break;
+    case PROP_MAX_VIDEO_WIDTH:
+      g_value_set_uint (value, demux->max_video_width);
+      break;
+    case PROP_MAX_VIDEO_HEIGHT:
+      g_value_set_uint (value, demux->max_video_height);
+      break;
+    case PROP_MAX_VIDEO_FRAMERATE:
+      gst_value_set_fraction (value, demux->max_video_framerate_n,
+          demux->max_video_framerate_d);
+      break;
     case PROP_PRESENTATION_DELAY:
       if (demux->default_presentation_delay == NULL)
         g_value_set_static_string (value, "");
@@ -1457,15 +1507,23 @@ gst_dash_demux_stream_select_bitrate (GstAdaptiveDemuxStream * stream,
   GST_DEBUG_OBJECT (stream->pad,
       "Trying to change to bitrate: %" G_GUINT64_FORMAT, bitrate);
 
+  if (active_stream->mimeType == GST_STREAM_VIDEO && demux->max_bitrate) {
+    bitrate = MIN (demux->max_bitrate, bitrate);
+  }
+
   /* get representation index with current max_bandwidth */
   if ((base_demux->segment.flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS) ||
       ABS (base_demux->segment.rate) <= 1.0) {
     new_index =
-        gst_mpdparser_get_rep_idx_with_max_bandwidth (rep_list, bitrate);
+        gst_mpdparser_get_rep_idx_with_max_bandwidth (rep_list, bitrate,
+        demux->max_video_width, demux->max_video_height,
+        demux->max_video_framerate_n, demux->max_video_framerate_d);
   } else {
     new_index =
         gst_mpdparser_get_rep_idx_with_max_bandwidth (rep_list,
-        bitrate / ABS (base_demux->segment.rate));
+        bitrate / ABS (base_demux->segment.rate), demux->max_video_width,
+        demux->max_video_height, demux->max_video_framerate_n,
+        demux->max_video_framerate_d);
   }
 
   /* if no representation has the required bandwidth, take the lowest one */

ext/dash/gstdashdemux.h

@@ -120,6 +120,8 @@ struct _GstDashDemux
   /* Properties */
   GstClockTime max_buffering_time;      /* Maximum buffering time accumulated during playback */
   guint64 max_bitrate;          /* max of bitrate supported by target decoder         */
+  gint max_video_width, max_video_height;
+  gint max_video_framerate_n, max_video_framerate_d;
   gchar* default_presentation_delay; /* presentation time delay if MPD@suggestedPresentationDelay is not present */
 
   gint n_audio_streams;

ext/dash/gstmpdparser.c

@@ -2453,7 +2453,8 @@ gst_mpdparser_get_rep_idx_with_min_bandwidth (GList * Representations)
 
 gint
 gst_mpdparser_get_rep_idx_with_max_bandwidth (GList * Representations,
-    gint max_bandwidth)
+    gint max_bandwidth, gint max_video_width, gint max_video_height, gint
+    max_video_framerate_n, gint max_video_framerate_d)
 {
   GList *list = NULL, *best = NULL;
   GstRepresentationNode *representation;
@@ -2468,8 +2469,32 @@ gst_mpdparser_get_rep_idx_with_max_bandwidth (GList * Representations,
     return gst_mpdparser_get_rep_idx_with_min_bandwidth (Representations);
 
   for (list = g_list_first (Representations); list; list = g_list_next (list)) {
+    GstFrameRate *framerate = NULL;
+
     representation = (GstRepresentationNode *) list->data;
-    if (representation && representation->bandwidth <= max_bandwidth &&
+
+    /* FIXME: Really? */
+    if (!representation)
+      continue;
+
+    framerate = representation->RepresentationBase->frameRate;
+    if (!framerate)
+      framerate = representation->RepresentationBase->maxFrameRate;
+
+    if (framerate && max_video_framerate_n > 0) {
+      if (gst_util_fraction_compare (framerate->num, framerate->den,
+              max_video_framerate_n, max_video_framerate_d) > 0)
+        continue;
+    }
+
+    if (max_video_width > 0
+        && representation->RepresentationBase->width > max_video_width)
+      continue;
+    if (max_video_height > 0
+        && representation->RepresentationBase->height > max_video_height)
+      continue;
+
+    if (representation->bandwidth <= max_bandwidth &&
         representation->bandwidth > best_bandwidth) {
       best = list;
       best_bandwidth = representation->bandwidth;

ext/dash/gstmpdparser.h

@@ -561,7 +561,7 @@ gboolean gst_mpd_client_has_next_period (GstMpdClient *client);
 gboolean gst_mpd_client_has_previous_period (GstMpdClient * client);
 
 /* Representation selection */
-gint gst_mpdparser_get_rep_idx_with_max_bandwidth (GList *Representations, gint max_bandwidth);
+gint gst_mpdparser_get_rep_idx_with_max_bandwidth (GList *Representations, gint max_bandwidth, gint max_video_width, gint max_video_height, gint max_video_framerate_n, gint max_video_framerate_d);
 gint gst_mpdparser_get_rep_idx_with_min_bandwidth (GList * Representations);
 
 /* URL management */