feat: import shared texture supports nv12. (#48922)

docs/api/structures/shared-texture-import-texture-info.md

@@ -4,6 +4,7 @@
   * `bgra` - 32bpp BGRA (byte-order), 1 plane.
   * `rgba` - 32bpp RGBA (byte-order), 1 plane.
   * `rgbaf16` - Half float RGBA, 1 plane.
+  * `nv12` - 12bpp with Y plane followed by a 2x2 interleaved UV plane.
 * `colorSpace` [ColorSpace](color-space.md) (optional) - The color space of the texture.
 * `codedSize` [Size](size.md) - The full dimensions of the shared texture.
 * `visibleRect` [Rectangle](rectangle.md) (optional) - A subsection of [0, 0, codedSize.width, codedSize.height]. In common cases, it is the full section area.

shell/common/api/electron_api_shared_texture.cc

@@ -126,6 +126,8 @@ std::string TransferVideoPixelFormatToString(media::VideoPixelFormat format) {
       return "rgba";
     case media::PIXEL_FORMAT_RGBAF16:
       return "rgbaf16";
+    case media::PIXEL_FORMAT_NV12:
+      return "nv12";
     default:
       NOTREACHED();
   }
@@ -566,6 +568,8 @@ struct Converter<ImportSharedTextureInfo> {
         out->pixel_format = media::PIXEL_FORMAT_ABGR;
       else if (pixel_format_str == "rgbaf16")
         out->pixel_format = media::PIXEL_FORMAT_RGBAF16;
+      else if (pixel_format_str == "nv12")
+        out->pixel_format = media::PIXEL_FORMAT_NV12;
       else
         return false;
     }
@@ -730,6 +734,14 @@ v8::Local<v8::Value> ImportSharedTexture(v8::Isolate* isolate,
                               shared_image_usage, "SharedTextureVideoFrame"},
                              std::move(gmb_handle));
 
+  if (!si) {
+    gin_helper::ErrorThrower(isolate).ThrowTypeError(
+        "Failed to create shared image from shared texture handle. Texture "
+        "format or dimension might not be supported on current device or "
+        "platform.");
+    return v8::Null(isolate);
+  }
+
   ImportedSharedTexture* imported = new ImportedSharedTexture();
   imported->pixel_format = shared_texture.pixel_format;
   imported->coded_size = shared_texture.coded_size;