Function PrintCameras

camera/camera-utils/src/main/cpp/camera_utils.cpp:363–400

* PrintCamera(): * Enumerate existing camera and its metadata. */

 *   Enumerate existing camera and its metadata.
 */
void PrintCameras(ACameraManager* cmrMgr) {
  if (!cmrMgr) return;

  ACameraIdList* cameraIds = nullptr;
  camera_status_t status = ACameraManager_getCameraIdList(cmrMgr, &cameraIds);
  LOGI("camera Status = %d, %s", status, GetErrorStr(status));

  for (int i = 0; i < cameraIds->numCameras; ++i) {
    const char* id = cameraIds->cameraIds[i];
    LOGI("=====cameraId = %d, cameraName = %s=====", i, id);
    ACameraMetadata* metadataObj;
    CALL_MGR(getCameraCharacteristics(cmrMgr, id, &metadataObj));

    int32_t count = 0;
    const uint32_t* tags = nullptr;
    ACameraMetadata_getAllTags(metadataObj, &count, &tags);

    for (int tagIdx = 0; tagIdx < count; ++tagIdx) {
      ACameraMetadata_const_entry val = {};
      camera_status_t status =
          ACameraMetadata_getConstEntry(metadataObj, tags[tagIdx], &val);
      if (status != ACAMERA_OK) {
        LOGW("Unsupported Tag: %s",
             GetTagStr(static_cast<acamera_metadata_tag_t>(tags[tagIdx])));
        continue;
      }

      PrintTagVal("Camera Tag:", val);

      if (ACAMERA_LENS_FACING == tags[tagIdx]) {
        PrintLensFacing(val);
      }
    }
    ACameraMetadata_free(metadataObj);
  }

  ACameraManager_deleteCameraIdList(cameraIds);
}

void PrintRequestMetadata(ACaptureRequest* req) {
  if (!req) return;