Bug 1670827 - P3: Telemetry tracking YUV color space r=jbauman

Add a telemetry probe tracking the YUV color space of the AVIF images

Differential Revision: https://phabricator.services.mozilla.com/D93708

image/decoders/nsAVIFDecoder.cpp

@@ -24,9 +24,16 @@ namespace image {
 
 using Telemetry::LABELS_AVIF_DECODE_RESULT;
 using Telemetry::LABELS_AVIF_DECODER;
+using Telemetry::LABELS_AVIF_YUV_COLOR_SPACE;
 
 static LazyLogModule sAVIFLog("AVIFDecoder");
 
+static const LABELS_AVIF_YUV_COLOR_SPACE gColorSpaceLabel[static_cast<size_t>(
+    gfx::YUVColorSpace::_NUM_COLORSPACE)] = {
+    LABELS_AVIF_YUV_COLOR_SPACE::BT601, LABELS_AVIF_YUV_COLOR_SPACE::BT709,
+    LABELS_AVIF_YUV_COLOR_SPACE::BT2020, LABELS_AVIF_YUV_COLOR_SPACE::identity,
+    LABELS_AVIF_YUV_COLOR_SPACE::unknown};
+
 // Wrapper to allow rust to call our read adaptor.
 intptr_t nsAVIFDecoder::ReadSource(uint8_t* aDestBuf, uintptr_t aDestBufSize,
                                    void* aUserData) {
@@ -519,6 +526,9 @@ nsAVIFDecoder::DecodeResult nsAVIFDecoder::Decode(
     return AsVariant(NonDecoderResult::MetadataOk);
   }
 
+  AccumulateCategorical(
+      gColorSpaceLabel[static_cast<size_t>(decodedData.mYUVColorSpace)]);
+
   gfx::SurfaceFormat format =
       hasAlpha ? SurfaceFormat::OS_RGBA : SurfaceFormat::OS_RGBX;
   const IntSize intrinsicSize = Size();

toolkit/components/telemetry/Histograms.json

@@ -1671,6 +1671,17 @@
     "description": "Decoder of AVIF image",
     "bug_numbers": [1670827]
   },
+  "AVIF_YUV_COLOR_SPACE": {
+    "record_in_processes": ["main", "content"],
+    "products": ["firefox", "geckoview_streaming"],
+    "alert_emails": ["cchang@mozilla.com", "jbauman@mozilla.com"],
+    "expires_in_version": "never",
+    "releaseChannelCollection": "opt-out",
+    "kind": "categorical",
+    "labels": ["BT601", "BT709", "BT2020", "identity", "unknown"],
+    "description": "YUV color space of AVIF image",
+    "bug_numbers": [1670827]
+  },
   "KEYPRESS_PRESENT_LATENCY": {
     "record_in_processes": [ "all" ],
     "products": ["firefox", "fennec", "geckoview_streaming"],

toolkit/components/telemetry/geckoview/streaming/metrics.yaml

@@ -835,6 +835,26 @@ avif:
       - jbauman@mozilla.com
     expires: never
 
+  yuv_color_space:
+    type: labeled_counter
+    labels:
+      - bt601
+      - bt709
+      - bt2020
+      - identity
+      - unknown
+    gecko_datapoint: AVIF_YUV_COLOR_SPACE
+    description: >
+      YUV color space of AVIF image.
+    bugs:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1670827
+    data_reviews:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1670827#c9
+    notification_emails:
+      - cchang@mozilla.com
+      - jbauman@mozilla.com
+    expires: never
+
 network:
   cache_hit_time:
     type: timing_distribution