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-rw-r--r--display.js14
1 files changed, 12 insertions, 2 deletions
diff --git a/display.js b/display.js
index 68e0af5..3f5d7bf 100644
--- a/display.js
+++ b/display.js
@@ -582,7 +582,9 @@ SpiceDisplayConn.prototype.process_channel_message = function(msg)
media.spiceconn = this;
v.spice_stream = s;
}
- else if (m.codec_type != SPICE_VIDEO_CODEC_TYPE_MJPEG)
+ else if (m.codec_type == SPICE_VIDEO_CODEC_TYPE_MJPEG)
+ this.streams[m.id].frames_loading = 0;
+ else
console.log("Unhandled stream codec: "+m.codec_type);
return true;
}
@@ -884,6 +886,9 @@ function handle_draw_jpeg_onload()
var temp_canvas = null;
var context;
+ if (this.o.sc.streams[this.o.id])
+ this.o.sc.streams[this.o.id].frames_loading--;
+
/*------------------------------------------------------------
** FIXME:
** The helper should be extended to be able to handle actual HtmlImageElements
@@ -970,7 +975,10 @@ function handle_draw_jpeg_onload()
function process_mjpeg_stream_data(sc, m, time_until_due)
{
- if (time_until_due < 0)
+ /* If we are currently processing an mjpeg frame when a new one arrives,
+ and the new one is 'late', drop the new frame. This helps the browsers
+ keep up, and provides rate control feedback as well */
+ if (time_until_due < 0 && sc.streams[m.base.id].frames_loading > 0)
{
if ("report" in sc.streams[m.base.id])
sc.streams[m.base.id].report.num_drops++;
@@ -1001,6 +1009,8 @@ function process_mjpeg_stream_data(sc, m, time_until_due)
};
img.onload = handle_draw_jpeg_onload;
img.src = tmpstr;
+
+ sc.streams[m.base.id].frames_loading++;
}
function process_stream_data_report(sc, id, msg_mmtime, time_until_due)