samples: usb: uvc: add h264/jpeg suffixed overlay/conf

Add conf and overlay files in order to enable usage of
the encoder in the UVC sample.
This work with platform defining node label
    zephyr_jpegenc
    zephyr_h264enc

Mode can be selected by using -DFILE_SUFFIX="jpegenc" or
-DFILE_SUFFIX="h264enc" when building the sample.

Signed-off-by: Alain Volmat <[email protected]>

Author: Alain Volmat

samples/subsys/usb/uvc/app_h264enc.overlay

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2025 tinyVision.ai Inc.
+ * Copyright (c) 2025 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	chosen {
+		zephyr,videoenc = &zephyr_h264enc;
+	};
+
+	uvc: uvc {
+		compatible = "zephyr,uvc-device";
+	};
+};

samples/subsys/usb/uvc/app_jpegenc.overlay

@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2025 tinyVision.ai Inc.
+ * Copyright (c) 2025 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	chosen {
+		zephyr,videoenc = &zephyr_jpegenc;
+	};
+
+	uvc: uvc {
+		compatible = "zephyr,uvc-device";
+	};
+};

samples/subsys/usb/uvc/prj_h264enc.conf

@@ -0,0 +1,16 @@
+CONFIG_LOG=y
+CONFIG_POLL=y
+CONFIG_SAMPLE_USBD_PID=0x0011
+CONFIG_SAMPLE_USBD_PRODUCT="UVC sample"
+CONFIG_UDC_BUF_POOL_SIZE=2048
+CONFIG_UDC_DRIVER_LOG_LEVEL_WRN=y
+CONFIG_USBD_LOG_LEVEL_WRN=y
+CONFIG_USBD_VIDEO_CLASS=y
+CONFIG_USBD_VIDEO_LOG_LEVEL_WRN=y
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=n
+CONFIG_VIDEO=y
+CONFIG_VIDEO_BUFFER_POOL_NUM_MAX=2
+CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=24576
+CONFIG_VIDEO_LOG_LEVEL_WRN=y
+CONFIG_VIDEO_ENCODER_H264=y

samples/subsys/usb/uvc/prj_jpegenc.conf

@@ -0,0 +1,16 @@
+CONFIG_LOG=y
+CONFIG_POLL=y
+CONFIG_SAMPLE_USBD_PID=0x0011
+CONFIG_SAMPLE_USBD_PRODUCT="UVC sample"
+CONFIG_UDC_BUF_POOL_SIZE=2048
+CONFIG_UDC_DRIVER_LOG_LEVEL_WRN=y
+CONFIG_USBD_LOG_LEVEL_WRN=y
+CONFIG_USBD_VIDEO_CLASS=y
+CONFIG_USBD_VIDEO_LOG_LEVEL_WRN=y
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=n
+CONFIG_VIDEO=y
+CONFIG_VIDEO_BUFFER_POOL_NUM_MAX=2
+CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=24576
+CONFIG_VIDEO_LOG_LEVEL_WRN=y
+CONFIG_VIDEO_ENCODER_JPEG=y