1 files changed, 0 insertions, 159 deletions
diff --git a/services/common_time/clock_recovery.h b/services/common_time/clock_recovery.h
deleted file mode 100644
index b6c87ff..0000000
--- a/services/common_time/clock_recovery.h
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Copyright (C) 2011 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.
- */
-
-#ifndef __CLOCK_RECOVERY_H__
-#define __CLOCK_RECOVERY_H__
-
-#include <stdint.h>
-#include <common_time/ICommonClock.h>
-#include <utils/LinearTransform.h>
-#include <utils/threads.h>
-
-#ifdef TIME_SERVICE_DEBUG
-#include "diag_thread.h"
-#endif
-
-#include "utils.h"
-
-namespace android {
-
-class CommonClock;
-class LocalClock;
-
-class ClockRecoveryLoop {
-  public:
-     ClockRecoveryLoop(LocalClock* local_clock, CommonClock* common_clock);
-    ~ClockRecoveryLoop();
-
-    void reset(bool position, bool frequency);
-    bool pushDisciplineEvent(int64_t local_time,
-                             int64_t nominal_common_time,
-                             int64_t data_point_rtt);
-    int32_t getLastErrorEstimate();
-
-    // Applies the next step in any ongoing slew change operation.  Returns a
-    // timeout suitable for use with poll/select indicating the number of mSec
-    // until the next change should be applied.
-    int applyRateLimitedSlew();
-
-  private:
-
-    // Tuned using the "Good Gain" method.
-    // See:
-    // http://techteach.no/publications/books/dynamics_and_control/tuning_pid_controller.pdf
-
-    // Controller period (1Hz for now).
-    static const float dT;
-
-    // Controller gain, positive and unitless. Larger values converge faster,
-    // but can cause instability.
-    static const float Kc;
-
-    // Integral reset time. Smaller values cause loop to track faster, but can
-    // also cause instability.
-    static const float Ti;
-
-    // Controller output filter time constant. Range (0-1). Smaller values make
-    // output smoother, but slow convergence.
-    static const float Tf;
-
-    // Low-pass filter for bias tracker.
-    static const float bias_Fc; // HZ
-    static const float bias_RC; // Computed in constructor.
-    static const float bias_Alpha; // Computed inconstructor.
-
-    // The maximum allowed error (as indicated by a  pushDisciplineEvent) before
-    // we panic.
-    static const int64_t panic_thresh_;
-
-    // The maximum allowed error rtt time for packets to be used for control
-    // feedback, unless the packet is the best in recent memory.
-    static const int64_t control_thresh_;
-
-    typedef struct {
-        int64_t local_time;
-        int64_t observed_common_time;
-        int64_t nominal_common_time;
-        int64_t rtt;
-        bool point_used;
-    } DisciplineDataPoint;
-
-    static uint32_t findMinRTTNdx(DisciplineDataPoint* data, uint32_t count);
-
-    void reset_l(bool position, bool frequency);
-    void setTargetCorrection_l(int32_t tgt);
-    bool applySlew_l();
-
-    // The local clock HW abstraction we use as the basis for common time.
-    LocalClock* local_clock_;
-    bool local_clock_can_slew_;
-
-    // The common clock we end up controlling along with the lock used to
-    // serialize operations.
-    CommonClock* common_clock_;
-    Mutex lock_;
-
-    // parameters maintained while running and reset during a reset
-    // of the frequency correction.
-    bool    last_error_est_valid_;
-    int32_t last_error_est_usec_;
-    float last_delta_f_;
-    int32_t integrated_error_;
-    int32_t tgt_correction_;
-    int32_t cur_correction_;
-    LinearTransform time_to_cur_slew_;
-    int64_t slew_change_end_time_;
-    Timeout next_slew_change_timeout_;
-
-    // Contoller Output.
-    float CO;
-
-    // Bias tracking for trajectory estimation.
-    float CObias;
-    float lastCObias;
-
-    // Controller output bounds. The controller will not try to
-    // slew faster that +/-100ppm offset from center per interation.
-    static const float COmin;
-    static const float COmax;
-
-    // State kept for filtering the discipline data.
-    static const uint32_t kFilterSize = 16;
-    DisciplineDataPoint filter_data_[kFilterSize];
-    uint32_t filter_wr_;
-    bool filter_full_;
-
-    static const uint32_t kStartupFilterSize = 4;
-    DisciplineDataPoint startup_filter_data_[kStartupFilterSize];
-    uint32_t startup_filter_wr_;
-
-    // Minimum number of milliseconds over which we allow a full range change
-    // (from rail to rail) of the VCXO control signal.  This is the rate
-    // limiting factor which keeps us from changing the clock rate so fast that
-    // we get in trouble with certain HDMI sinks.
-    static const uint32_t kMinFullRangeSlewChange_mSec;
-
-    // How much time (in msec) to wait 
-    static const int kSlewChangeStepPeriod_mSec;
-
-#ifdef TIME_SERVICE_DEBUG
-    sp<DiagThread> diag_thread_;
-#endif
-};
-
-}  // namespace android
-
-#endif  // __CLOCK_RECOVERY_H__