Add support for HEIC_ULTRAHDR

Author: epeevs

app/src/main/java/com/example/platform/app/SampleDemo.kt

@@ -24,6 +24,7 @@ import com.example.android.pip.PiPSampleActivity
 import com.example.platform.accessibility.ColorContrast
 import com.example.platform.accessibility.LiveRegionView
 import com.example.platform.accessibility.SpeakableText
+import com.example.platform.camera.imagecapture.Camera2HeicUltraHDRCapture
 import com.example.platform.camera.imagecapture.Camera2ImageCapture
 import com.example.platform.camera.imagecapture.Camera2UltraHDRCapture
 import com.example.platform.camera.preview.Camera2Preview
@@ -209,7 +210,18 @@ val SAMPLE_DEMOS by lazy {
             content = { AndroidFragment<Camera2UltraHDRCapture>() },
         ),
         ComposableSampleDemo(
-            id = "ultrahdr-image-capture",
+            id = "ultrahdr-heic-image-capture",
+            name = "HEIC UltraHDR Image Capture",
+            description = "This sample demonstrates how to capture a 10-bit compressed still image and " +
+                    "store it using the new UltraHDR image format using Camera2.",
+            documentation = "https://developer.android.com/guide/topics/media/hdr-image-format",
+            minSdk = android.os.Build.VERSION_CODES.BAKLAVA, // Added minSdk for HEIC_ULTRAHDR
+            apiSurface = CameraCamera2ApiSurface,
+            tags = listOf("UltraHDR", "Camera2"),
+            content = { AndroidFragment<Camera2HeicUltraHDRCapture>() },
+        ),
+        ComposableSampleDemo(
+            id = "image-preview",
             name = "Camera2 Preview",
             description = "Demonstrates displaying processed pixel data directly from the camera sensor "
                     + "to the screen using Camera2.",

samples/camera/camera2/build.gradle.kts

@@ -22,11 +22,11 @@ plugins {
 
 android {
     namespace = "com.example.platform.camera"
-    compileSdk = 35
+    compileSdk = 36
 
     defaultConfig {
         minSdk = 21
-        targetSdk = 35
+        targetSdk = 36
     }
     kotlinOptions {
         jvmTarget = "1.8"

samples/camera/camera2/src/main/java/com/example/platform/camera/imagecapture/Camera2HeicUltraHDRCapture.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.platform.camera.imagecapture
+
+import android.graphics.ImageFormat
+import android.os.Build
+import androidx.annotation.RequiresApi
+
+@RequiresApi(Build.VERSION_CODES.BAKLAVA)
+class Camera2HeicUltraHDRCapture : Camera2UltraHDRCapture() {
+    override val ULTRAHDR_FORMAT = ImageFormat.HEIC_ULTRAHDR
+}

samples/camera/camera2/src/main/java/com/example/platform/camera/imagecapture/Camera2UltraHDRCapture.kt

@@ -48,7 +48,6 @@ import androidx.annotation.RequiresApi
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.drawable.toDrawable
 import androidx.core.os.bundleOf
-import androidx.exifinterface.media.ExifInterface
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.commit
 import androidx.lifecycle.lifecycleScope
@@ -76,14 +75,15 @@ import kotlin.coroutines.resume
 import kotlin.coroutines.resumeWithException
 import kotlin.coroutines.suspendCoroutine
 
-@RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE)
-class Camera2UltraHDRCapture : Fragment() {
+open class Camera2UltraHDRCapture : Fragment() {
     /**
      *  Android ViewBinding.
      */
     private var _binding: Camera2UltrahdrCaptureBinding? = null
     private val binding get() = _binding!!
 
+    protected open val ULTRAHDR_FORMAT = ImageFormat.JPEG_R
+
     /**
      *  Detects, characterizes, and connects to a CameraDevice (used for all camera operations).
      */
@@ -303,13 +303,13 @@ class Camera2UltraHDRCapture : Fragment() {
 
     private fun setUpImageReader() {
         // Initialize an image reader which will be used to capture still photos
-        val pixelFormat = ImageFormat.JPEG_R
+        val pixelFormat = ULTRAHDR_FORMAT
         val configMap = characteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)
         configMap?.let { config ->
             config.getOutputSizes(pixelFormat).maxByOrNull { it.height * it.width }
                 ?.let { size ->
                     imageReader = ImageReader.newInstance(
-                        size.width, size.height, pixelFormat, IMAGE_BUFFER_SIZE,
+                        size.width, size.height, ULTRAHDR_FORMAT, IMAGE_BUFFER_SIZE,
                     )
                 }
         }
@@ -324,13 +324,11 @@ class Camera2UltraHDRCapture : Fragment() {
                 takePhoto().use { result ->
                     Log.d(TAG, "Result received: $result")
 
-                    // Save the result to disk, update EXIF metadata with orientation info
+                    // Save the result to disk, the previous EXIF orientation approach
+                    // will not work in case of HEIC images so use the corresponding
+                    // Camera2 control path instead.
                     val output = saveResult(result)
                     Log.d(TAG, "Image saved: ${output.absolutePath}")
-                    val exif = ExifInterface(output.absolutePath)
-                    exif.setAttribute(ExifInterface.TAG_ORIENTATION, result.orientation.toString())
-                    exif.saveAttributes()
-                    Log.d(TAG, "EXIF metadata saved: ${output.absolutePath}")
 
                     // Display the photo taken to user
                     lifecycleScope.launch(Dispatchers.Main) {
@@ -355,7 +353,7 @@ class Camera2UltraHDRCapture : Fragment() {
         // Query the available output formats.
         val formats = c.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)?.outputFormats
 
-        val canEncodeUltraHDR = formats?.contains(ImageFormat.JPEG_R) ?: false
+        val canEncodeUltraHDR = formats?.contains(ULTRAHDR_FORMAT) ?: false
 
         return canEncodeUltraHDR
     }
@@ -499,6 +497,7 @@ class Camera2UltraHDRCapture : Fragment() {
 
         val request = session.device.createCaptureRequest(CameraDevice.TEMPLATE_STILL_CAPTURE)
             .apply { addTarget(imageReader.surface) }
+        request.set(CaptureRequest.JPEG_ORIENTATION, relativeOrientation.value ?: 0)
 
         session.capture(
             request.build(),
@@ -584,7 +583,7 @@ class Camera2UltraHDRCapture : Fragment() {
         val buffer = result.image.planes[0].buffer
         val bytes = ByteArray(buffer.remaining()).apply { buffer.get(this) }
         try {
-            val output = createFile(requireContext())
+            val output = createFile(requireContext(), ULTRAHDR_FORMAT)
             FileOutputStream(output).use { it.write(bytes) }
             cont.resume(output)
         } catch (exc: IOException) {
@@ -635,9 +634,13 @@ class Camera2UltraHDRCapture : Fragment() {
          *
          * @return [File] created.
          */
-        private fun createFile(context: Context): File {
+        private fun createFile(context: Context, format: Int): File {
             val sdf = SimpleDateFormat("yyyy_MM_dd_HH_mm_ss_SSS", Locale.US)
-            return File(context.filesDir, "IMG_${sdf.format(Date())}.jpg")
+            val fileType = when (format) {
+                ImageFormat.JPEG_R -> ".jpg"
+                else -> ".heic"
+            }
+            return File(context.filesDir, "IMG_${sdf.format(Date())}" + fileType)
         }
     }
 }