usbcamera: initial implementation of default usb camera HAL
* Basic skeleton of usb camera hal implementation
* Vendor tag is not supported yet
* Further usb camera hal implementation can be filled into UsbCamera.cpp
* Hot plug thread need to be implemented
Change-Id: Ida63b6d640e32192f5b60a280d9d5106d80e523f
diff --git a/modules/usbcamera/UsbCamera.cpp b/modules/usbcamera/UsbCamera.cpp
new file mode 100644
index 0000000..ded3e92
--- /dev/null
+++ b/modules/usbcamera/UsbCamera.cpp
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2015 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
+ *
+ * http://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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "UsbCameraDevice"
+#include <cutils/log.h>
+
+#include <system/camera_metadata.h>
+
+#define ATRACE_TAG (ATRACE_TAG_CAMERA | ATRACE_TAG_HAL)
+#include <utils/Trace.h>
+
+#include "Camera.h"
+#include "UsbCamera.h"
+
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+
+namespace usb_camera_hal {
+
+UsbCamera::UsbCamera(int id) : Camera(id) {
+}
+
+UsbCamera::~UsbCamera() {
+}
+
+int UsbCamera::initStaticInfo() {
+ /*
+ * Setup static camera info. This will have to customized per camera
+ * device.
+ * TODO: this is just some sample code, need tailor for USB cameras.
+ */
+ if (mStaticInfo != NULL) {
+ free_camera_metadata(mStaticInfo);
+ }
+
+ Metadata m;
+
+ /* android.control */
+ int32_t android_control_ae_available_target_fps_ranges[] = {30, 30};
+ m.addInt32(ANDROID_CONTROL_AE_AVAILABLE_TARGET_FPS_RANGES,
+ ARRAY_SIZE(android_control_ae_available_target_fps_ranges),
+ android_control_ae_available_target_fps_ranges);
+
+ int32_t android_control_ae_compensation_range[] = {-4, 4};
+ m.addInt32(ANDROID_CONTROL_AE_COMPENSATION_RANGE,
+ ARRAY_SIZE(android_control_ae_compensation_range),
+ android_control_ae_compensation_range);
+
+ camera_metadata_rational_t android_control_ae_compensation_step[] = {{2,1}};
+ m.addRational(ANDROID_CONTROL_AE_COMPENSATION_STEP,
+ ARRAY_SIZE(android_control_ae_compensation_step),
+ android_control_ae_compensation_step);
+
+ int32_t android_control_max_regions[] = {/*AE*/ 1,/*AWB*/ 1,/*AF*/ 1};
+ m.addInt32(ANDROID_CONTROL_MAX_REGIONS,
+ ARRAY_SIZE(android_control_max_regions),
+ android_control_max_regions);
+
+ /* android.jpeg */
+ int32_t android_jpeg_available_thumbnail_sizes[] = {0, 0, 128, 96};
+ m.addInt32(ANDROID_JPEG_AVAILABLE_THUMBNAIL_SIZES,
+ ARRAY_SIZE(android_jpeg_available_thumbnail_sizes),
+ android_jpeg_available_thumbnail_sizes);
+
+ int32_t android_jpeg_max_size[] = {13 * 1024 * 1024}; // 13MB
+ m.addInt32(ANDROID_JPEG_MAX_SIZE,
+ ARRAY_SIZE(android_jpeg_max_size),
+ android_jpeg_max_size);
+
+ /* android.lens */
+ float android_lens_info_available_focal_lengths[] = {1.0};
+ m.addFloat(ANDROID_LENS_INFO_AVAILABLE_FOCAL_LENGTHS,
+ ARRAY_SIZE(android_lens_info_available_focal_lengths),
+ android_lens_info_available_focal_lengths);
+
+ /* android.request */
+ int32_t android_request_max_num_output_streams[] = {0, 3, 1};
+ m.addInt32(ANDROID_REQUEST_MAX_NUM_OUTPUT_STREAMS,
+ ARRAY_SIZE(android_request_max_num_output_streams),
+ android_request_max_num_output_streams);
+
+ /* android.scaler */
+ int32_t android_scaler_available_formats[] = {
+ HAL_PIXEL_FORMAT_RAW_SENSOR,
+ HAL_PIXEL_FORMAT_BLOB,
+ HAL_PIXEL_FORMAT_RGBA_8888,
+ HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED,
+ // These are handled by YCbCr_420_888
+ // HAL_PIXEL_FORMAT_YV12,
+ // HAL_PIXEL_FORMAT_YCrCb_420_SP,
+ HAL_PIXEL_FORMAT_YCbCr_420_888};
+ m.addInt32(ANDROID_SCALER_AVAILABLE_FORMATS,
+ ARRAY_SIZE(android_scaler_available_formats),
+ android_scaler_available_formats);
+
+ int64_t android_scaler_available_jpeg_min_durations[] = {1};
+ m.addInt64(ANDROID_SCALER_AVAILABLE_JPEG_MIN_DURATIONS,
+ ARRAY_SIZE(android_scaler_available_jpeg_min_durations),
+ android_scaler_available_jpeg_min_durations);
+
+ int32_t android_scaler_available_jpeg_sizes[] = {640, 480};
+ m.addInt32(ANDROID_SCALER_AVAILABLE_JPEG_SIZES,
+ ARRAY_SIZE(android_scaler_available_jpeg_sizes),
+ android_scaler_available_jpeg_sizes);
+
+ float android_scaler_available_max_digital_zoom[] = {1};
+ m.addFloat(ANDROID_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM,
+ ARRAY_SIZE(android_scaler_available_max_digital_zoom),
+ android_scaler_available_max_digital_zoom);
+
+ int64_t android_scaler_available_processed_min_durations[] = {1};
+ m.addInt64(ANDROID_SCALER_AVAILABLE_PROCESSED_MIN_DURATIONS,
+ ARRAY_SIZE(android_scaler_available_processed_min_durations),
+ android_scaler_available_processed_min_durations);
+
+ int32_t android_scaler_available_processed_sizes[] = {640, 480};
+ m.addInt32(ANDROID_SCALER_AVAILABLE_PROCESSED_SIZES,
+ ARRAY_SIZE(android_scaler_available_processed_sizes),
+ android_scaler_available_processed_sizes);
+
+ int64_t android_scaler_available_raw_min_durations[] = {1};
+ m.addInt64(ANDROID_SCALER_AVAILABLE_RAW_MIN_DURATIONS,
+ ARRAY_SIZE(android_scaler_available_raw_min_durations),
+ android_scaler_available_raw_min_durations);
+
+ int32_t android_scaler_available_raw_sizes[] = {640, 480};
+ m.addInt32(ANDROID_SCALER_AVAILABLE_RAW_SIZES,
+ ARRAY_SIZE(android_scaler_available_raw_sizes),
+ android_scaler_available_raw_sizes);
+
+ /* android.sensor */
+
+ int32_t android_sensor_info_active_array_size[] = {0, 0, 640, 480};
+ m.addInt32(ANDROID_SENSOR_INFO_ACTIVE_ARRAY_SIZE,
+ ARRAY_SIZE(android_sensor_info_active_array_size),
+ android_sensor_info_active_array_size);
+
+ int32_t android_sensor_info_sensitivity_range[] =
+ {100, 1600};
+ m.addInt32(ANDROID_SENSOR_INFO_SENSITIVITY_RANGE,
+ ARRAY_SIZE(android_sensor_info_sensitivity_range),
+ android_sensor_info_sensitivity_range);
+
+ int64_t android_sensor_info_max_frame_duration[] = {30000000000};
+ m.addInt64(ANDROID_SENSOR_INFO_MAX_FRAME_DURATION,
+ ARRAY_SIZE(android_sensor_info_max_frame_duration),
+ android_sensor_info_max_frame_duration);
+
+ float android_sensor_info_physical_size[] = {3.2, 2.4};
+ m.addFloat(ANDROID_SENSOR_INFO_PHYSICAL_SIZE,
+ ARRAY_SIZE(android_sensor_info_physical_size),
+ android_sensor_info_physical_size);
+
+ int32_t android_sensor_info_pixel_array_size[] = {640, 480};
+ m.addInt32(ANDROID_SENSOR_INFO_PIXEL_ARRAY_SIZE,
+ ARRAY_SIZE(android_sensor_info_pixel_array_size),
+ android_sensor_info_pixel_array_size);
+
+ int32_t android_sensor_orientation[] = {0};
+ m.addInt32(ANDROID_SENSOR_ORIENTATION,
+ ARRAY_SIZE(android_sensor_orientation),
+ android_sensor_orientation);
+
+ /* End of static camera characteristics */
+
+ mStaticInfo = clone_camera_metadata(m.get());
+
+ return 0;
+}
+
+int UsbCamera::openDevice() {
+ // TODO: implement usb camera device open sequence: open device nodes etc.
+
+ return 0;
+}
+
+int UsbCamera::closeDevice() {
+ // TODO: implement usb camera device close sequence: close device nodes etc.
+
+ return 0;
+}
+
+int UsbCamera::processCaptureBuffer(const camera3_stream_buffer_t *in,
+ camera3_stream_buffer_t *out) {
+ if (in->acquire_fence != -1) {
+ int res = sync_wait(in->acquire_fence, CAMERA_SYNC_TIMEOUT_MS);
+ if (res == -ETIME) {
+ ALOGE("%s:%d: Timeout waiting on buffer acquire fence",
+ __func__, mId);
+ return res;
+ } else if (res) {
+ ALOGE("%s:%d: Error waiting on buffer acquire fence: %s(%d)",
+ __func__, mId, strerror(-res), res);
+ return res;
+ }
+ }
+
+ out->stream = in->stream;
+ out->buffer = in->buffer;
+ out->status = CAMERA3_BUFFER_STATUS_OK;
+ // TODO: use driver-backed release fences
+ out->acquire_fence = -1;
+ out->release_fence = -1;
+
+ // TODO: lock and software-paint buffer
+ return 0;
+}
+
+int UsbCamera::initDevice() {
+ int res;
+ Metadata base;
+
+ // Create standard settings templates from copies of base metadata
+ res = base.add1UInt8(ANDROID_CONTROL_MODE, ANDROID_CONTROL_MODE_OFF);
+ if (res)
+ return res;
+
+ // Use base settings to create all other templates and set them. This is just some samples,
+ // More initialization may be needed.
+ res = initPreviewTemplate(base);
+ if (res)
+ return res;
+ res = initStillTemplate(base);
+ if (res)
+ return res;
+ res = initRecordTemplate(base);
+ if (res)
+ return res;
+ res = initSnapshotTemplate(base);
+ if (res)
+ return res;
+ res = initZslTemplate(base);
+ if (res)
+ return res;
+ res = initManualTemplate(base);
+ if (res)
+ return res;
+
+ return 0;
+}
+
+int UsbCamera::initPreviewTemplate(Metadata m) {
+ // Setup default preview controls
+ int res = m.add1UInt8(ANDROID_CONTROL_CAPTURE_INTENT,
+ ANDROID_CONTROL_CAPTURE_INTENT_PREVIEW);
+
+ if (res)
+ return res;
+ // TODO: set fast auto-focus, auto-whitebalance, auto-exposure, auto flash
+ return setTemplate(CAMERA3_TEMPLATE_PREVIEW, m.get());
+}
+
+int UsbCamera::initStillTemplate(Metadata m) {
+ int res = m.add1UInt8(ANDROID_CONTROL_CAPTURE_INTENT,
+ ANDROID_CONTROL_CAPTURE_INTENT_STILL_CAPTURE);
+ // Setup default still capture controls
+ if (res)
+ return res;
+ // TODO: set fast auto-focus, auto-whitebalance, auto-exposure, auto flash
+ return setTemplate(CAMERA3_TEMPLATE_STILL_CAPTURE, m.get());
+}
+
+int UsbCamera::initRecordTemplate(Metadata m) {
+ int res = m.add1UInt8(ANDROID_CONTROL_CAPTURE_INTENT,
+ ANDROID_CONTROL_CAPTURE_INTENT_VIDEO_RECORD);
+ // Setup default video record controls
+ if (res)
+ return res;
+ // TODO: set slow auto-focus, auto-whitebalance, auto-exposure, flash off
+ return setTemplate(CAMERA3_TEMPLATE_VIDEO_RECORD, m.get());
+}
+
+int UsbCamera::initSnapshotTemplate(Metadata m) {
+ int res = m.add1UInt8(ANDROID_CONTROL_CAPTURE_INTENT,
+ ANDROID_CONTROL_CAPTURE_INTENT_VIDEO_SNAPSHOT);
+ // Setup default video snapshot controls
+ if (res)
+ return res;
+ // TODO: set slow auto-focus, auto-whitebalance, auto-exposure, flash off
+ return setTemplate(CAMERA3_TEMPLATE_VIDEO_SNAPSHOT, m.get());
+}
+
+int UsbCamera::initZslTemplate(Metadata m) {
+ int res = m.add1UInt8(ANDROID_CONTROL_CAPTURE_INTENT,
+ ANDROID_CONTROL_CAPTURE_INTENT_ZERO_SHUTTER_LAG);
+ // Setup default zero shutter lag controls
+ if (res)
+ return res;
+ // TODO: set reprocessing parameters for zsl input queue
+ return setTemplate(CAMERA3_TEMPLATE_ZERO_SHUTTER_LAG, m.get());
+}
+
+int UsbCamera::initManualTemplate(Metadata m) {
+ int res = m.add1UInt8(ANDROID_CONTROL_CAPTURE_INTENT,
+ ANDROID_CONTROL_CAPTURE_INTENT_MANUAL);
+ // Setup manual controls
+ if (res)
+ return res;
+ // TODO: set reprocessing parameters for zsl input queue
+ return setTemplate(CAMERA3_TEMPLATE_MANUAL, m.get());
+}
+
+bool UsbCamera::isValidCaptureSettings(const camera_metadata_t* settings) {
+ // TODO: reject settings that cannot be captured
+ return true;
+}
+
+} // namespace usb_camera_hal