video: add NV16 format

This format is usually used by hardware video decoders for 4:2:2 sampling

https://bugzilla.gnome.org/show_bug.cgi?id=700377

gst-libs/gst/video/video-format.c

@@ -921,6 +921,26 @@ pack_NV21 (const GstVideoFormatInfo * info, GstVideoPackFlags flags,
       GET_PLANE_LINE (1, uv), src, width / 2);
 }
 
+#define PACK_NV16 GST_VIDEO_FORMAT_AYUV, unpack_NV16, 1, pack_NV16
+static void
+unpack_NV16 (const GstVideoFormatInfo * info, GstVideoPackFlags flags,
+    gpointer dest, const gpointer data[GST_VIDEO_MAX_PLANES],
+    const gint stride[GST_VIDEO_MAX_PLANES], gint x, gint y, gint width)
+{
+  video_orc_unpack_NV16 (dest,
+      GET_PLANE_LINE (0, y), GET_PLANE_LINE (1, y), width);
+}
+
+static void
+pack_NV16 (const GstVideoFormatInfo * info, GstVideoPackFlags flags,
+    const gpointer src, gint sstride, gpointer data[GST_VIDEO_MAX_PLANES],
+    const gint stride[GST_VIDEO_MAX_PLANES], GstVideoChromaSite chroma_site,
+    gint y, gint width)
+{
+  video_orc_pack_NV16 (GET_PLANE_LINE (0, y),
+      GET_PLANE_LINE (1, y), src, width / 2);
+}
+
 #define PACK_UYVP GST_VIDEO_FORMAT_AYUV64, unpack_UYVP, 1, pack_UYVP
 static void
 unpack_UYVP (const GstVideoFormatInfo * info, GstVideoPackFlags flags,
@@ -2020,6 +2040,9 @@ static VideoFormat formats[] = {
   MAKE_RGB_LE_FORMAT (GBR_10LE, "raw video", DPTH10_10_10, PSTR222, PLANE201,
       OFFS0, SUB444,
       PACK_GBR_10LE),
+
+  MAKE_YUV_FORMAT (NV16, "raw video", GST_MAKE_FOURCC ('N', 'V', '1', '6'),
+      DPTH888, PSTR111, PLANE011, OFFS001, SUB422, PACK_NV16),
 };
 
 static GstVideoFormat
@@ -2221,6 +2244,8 @@ gst_video_format_from_fourcc (guint32 fourcc)
       return GST_VIDEO_FORMAT_NV12;
     case GST_MAKE_FOURCC ('N', 'V', '2', '1'):
       return GST_VIDEO_FORMAT_NV21;
+    case GST_MAKE_FOURCC ('N', 'V', '1', '6'):
+      return GST_VIDEO_FORMAT_NV16;
     case GST_MAKE_FOURCC ('v', '3', '0', '8'):
       return GST_VIDEO_FORMAT_v308;
     case GST_MAKE_FOURCC ('Y', '8', '0', '0'):

gst-libs/gst/video/video-format.h

@@ -79,6 +79,7 @@ G_BEGIN_DECLS
  * @GST_VIDEO_FORMAT_GBR: planar 4:4:4 RGB, 8 bits per channel
  * @GST_VIDEO_FORMAT_GBR_10BE: planar 4:4:4 RGB, 10 bits per channel
  * @GST_VIDEO_FORMAT_GBR_10LE: planar 4:4:4 RGB, 10 bits per channel
+ * @GST_VIDEO_FORMAT_NV16: planar 4:2:2 YUV with interleaved UV plane
  *
  * Enum value describing the most common video formats.
  */
@@ -134,6 +135,7 @@ typedef enum {
   GST_VIDEO_FORMAT_GBR,
   GST_VIDEO_FORMAT_GBR_10BE,
   GST_VIDEO_FORMAT_GBR_10LE,
+  GST_VIDEO_FORMAT_NV16,
 } GstVideoFormat;
 
 #define GST_VIDEO_MAX_PLANES 4
@@ -451,7 +453,7 @@ gconstpointer  gst_video_format_get_palette          (GstVideoFormat format, gsi
 
 #define GST_VIDEO_FORMATS_ALL "{ I420, YV12, YUY2, UYVY, AYUV, RGBx, "  \
     "BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR, Y41B, Y42B, "  \
-    "YVYU, Y444, v210, v216, NV12, NV21, GRAY8, GRAY16_BE, GRAY16_LE, " \
+    "YVYU, Y444, v210, v216, NV12, NV21, NV16, GRAY8, GRAY16_BE, GRAY16_LE, " \
     "v308, RGB16, BGR16, RGB15, BGR15, UYVP, A420, RGB8P, YUV9, YVU9, " \
     "IYU1, ARGB64, AYUV64, r210, I420_10LE, I420_10BE, I422_10LE, I422_10BE, " \
     " Y444_10LE, Y444_10BE, GBR, GBR_10LE, GBR_10BE }"

gst-libs/gst/video/video-info.c

@@ -495,6 +495,13 @@ fill_planes (GstVideoInfo * info)
       info->offset[1] = info->stride[0] * GST_ROUND_UP_2 (height);
       info->size = info->stride[0] * GST_ROUND_UP_2 (height) * 3 / 2;
       break;
+    case GST_VIDEO_FORMAT_NV16:
+      info->stride[0] = GST_ROUND_UP_4 (width);
+      info->stride[1] = info->stride[0];
+      info->offset[0] = 0;
+      info->offset[1] = info->stride[0] * height;
+      info->size = info->stride[0] * height * 2;
+      break;
     case GST_VIDEO_FORMAT_A420:
       info->stride[0] = GST_ROUND_UP_4 (width);
       info->stride[1] = GST_ROUND_UP_4 (GST_ROUND_UP_2 (width) / 2);

gst-libs/gst/video/video-orc.orc

@@ -440,6 +440,30 @@ x2 avgub uv, uv1, uv2
 swapw vu, uv
 
 
+.function video_orc_unpack_NV16
+.dest 4 d guint8
+.source 1 y guint8
+.source 2 uv guint8
+.const 1 c255 255
+.temp 2 ay
+.temp 2 tuv
+
+x2 loadupdb tuv, uv
+mergebw ay, c255, y
+mergewl d, ay, tuv
+
+.function video_orc_pack_NV16
+.dest 2 y guint8
+.dest 2 uv guint8
+.source 8 ayuv guint8
+.temp 4 ay
+.temp 4 tuv
+
+x2 splitlw tuv, ay, ayuv
+x2 select1wb y, ay
+select0lw uv, tuv
+
+
 .function video_orc_unpack_A420
 .dest 4 d guint8
 .source 1 y guint8