[Spice-devel] [PATCH spice-html5 4/4] Display: Add support for the VP9 codec type

[Pavel Grunt]

From: Tomáš Bohdálek <tom.bohdalek at gmail.com>

---
 display.js   | 26 ++++++++++++++++++++------
 spiceconn.js |  2 ++
 webm.js      | 12 ++++++++++--
 3 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/display.js b/display.js
index 0868f91..c458df6 100644
--- a/display.js
+++ b/display.js
@@ -543,7 +543,8 @@ SpiceDisplayConn.prototype.process_channel_message = function(msg)
         else
             this.streams[m.id] = m;
 
-        if (m.codec_type == SPICE_VIDEO_CODEC_TYPE_VP8)
+        if (m.codec_type == SPICE_VIDEO_CODEC_TYPE_VP8 ||
+            m.codec_type == SPICE_VIDEO_CODEC_TYPE_VP9)
         {
             var media = new MediaSource();
             var v = document.createElement("video");
@@ -606,7 +607,8 @@ SpiceDisplayConn.prototype.process_channel_message = function(msg)
         if (this.streams[m.base.id].codec_type === SPICE_VIDEO_CODEC_TYPE_MJPEG)
             process_mjpeg_stream_data(this, m, time_until_due);
 
-        if (this.streams[m.base.id].codec_type === SPICE_VIDEO_CODEC_TYPE_VP8)
+        if (this.streams[m.base.id].codec_type === SPICE_VIDEO_CODEC_TYPE_VP8 ||
+            this.streams[m.base.id].codec_type == SPICE_VIDEO_CODEC_TYPE_VP9)
             process_video_stream_data(this.streams[m.base.id], m);
 
         return true;
@@ -640,7 +642,8 @@ SpiceDisplayConn.prototype.process_channel_message = function(msg)
         var m = new SpiceMsgDisplayStreamDestroy(msg.data);
         STREAM_DEBUG > 0 && console.log(this.type + ": MsgStreamDestroy id" + m.id);
 
-        if (this.streams[m.id].codec_type == SPICE_VIDEO_CODEC_TYPE_VP8)
+        if (this.streams[m.id].codec_type == SPICE_VIDEO_CODEC_TYPE_VP8 ||
+            this.streams[m.id].codec_type == SPICE_VIDEO_CODEC_TYPE_VP9)
         {
             document.getElementById(this.parent.screen_id).removeChild(this.streams[m.id].video);
             this.streams[m.id].source_buffer = null;
@@ -1036,14 +1039,24 @@ function handle_video_source_open(e)
 {
     var stream = this.stream;
     var p = this.spiceconn;
+    var codec_type;
 
     if (stream.source_buffer)
         return;
 
-    var s = this.addSourceBuffer(SPICE_VP8_CODEC);
+    if (this.stream.codec_type == SPICE_VIDEO_CODEC_TYPE_VP8)
+    {
+        codec_type = SPICE_VP8_CODEC;
+    }
+    else
+    {
+        codec_type = SPICE_VP9_CODEC;
+    }
+
+    var s = this.addSourceBuffer(codec_type);
     if (! s)
     {
-        p.log_err('Codec ' + SPICE_VP8_CODEC + ' not available.');
+        p.log_err('Codec ' + codec_type + ' not available.');
         return;
     }
 
@@ -1054,7 +1067,8 @@ function handle_video_source_open(e)
     listen_for_video_events(stream);
 
     var h = new webm_Header();
-    var te = new webm_VideoTrackEntry(this.stream.stream_width, this.stream.stream_height);
+    var te = new webm_VideoTrackEntry(this.stream.stream_width, this.stream.stream_height,
+                                      this.stream.codec_type);
     var t = new webm_Tracks(te);
 
     var mb = new ArrayBuffer(h.buffer_size() + t.buffer_size())
diff --git a/spiceconn.js b/spiceconn.js
index d76f8e2..72b7934 100644
--- a/spiceconn.js
+++ b/spiceconn.js
@@ -147,6 +147,8 @@ SpiceConn.prototype =
                         (1 << SPICE_DISPLAY_CAP_CODEC_MJPEG);
             if ('MediaSource' in window && MediaSource.isTypeSupported(SPICE_VP8_CODEC))
                 caps |= (1 << SPICE_DISPLAY_CAP_CODEC_VP8);
+            if ('MediaSource' in window && MediaSource.isTypeSupported(SPICE_VP9_CODEC))
+                caps |= (1 << SPICE_DISPLAY_CAP_CODEC_VP9);
             msg.channel_caps.push(caps);
         }
 
diff --git a/webm.js b/webm.js
index 789da14..c697135 100644
--- a/webm.js
+++ b/webm.js
@@ -88,6 +88,7 @@ var EXPECTED_PACKET_DURATION                = 10;
 var GAP_DETECTION_THRESHOLD                 = 50;
 
 var SPICE_VP8_CODEC                         = 'video/webm; codecs="vp8"';
+var SPICE_VP9_CODEC                         = 'video/webm; codecs="vp9"';
 
 /*----------------------------------------------------------------------------
 **  EBML utility functions
@@ -467,7 +468,7 @@ webm_AudioTrackEntry.prototype =
     },
 }
 
-function webm_VideoTrackEntry(width, height)
+function webm_VideoTrackEntry(width, height, codec_type)
 {
     this.id = WEBM_TRACK_ENTRY;
     this.number = 1;
@@ -482,8 +483,15 @@ function webm_VideoTrackEntry(width, height)
     this.codec_decode_all = 0; // fixme - check
     this.seek_pre_roll = 0; // 80000000; // fixme - check
     this.codec_delay =   80000000; // Must match codec_private.preskip
-    this.codec_id = "V_VP8";
     this.video = new webm_Video(width, height);
+    if (codec_type == SPICE_VIDEO_CODEC_TYPE_VP8)
+    {
+        this.codec_id = "V_VP8";
+    }
+    else
+    {
+        this.codec_id = "V_VP9";
+    }
 }
 
 webm_VideoTrackEntry.prototype =
-- 
2.13.0