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PL286/hardware/libhardware/modules/usbcamera/UsbCamera.cpp

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/*
* 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 <stdint.h>
#include <log/log.h>
#define ATRACE_TAG (ATRACE_TAG_CAMERA | ATRACE_TAG_HAL)
#include <utils/Trace.h>
#include <system/camera_metadata.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_RAW16,
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