ui/events/ozone/evdev/touch_evdev_debug_buffer.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/events/ozone/evdev/touch_evdev_debug_buffer.h"
   6
   7 #include <stdio.h>
   8
   9 #include "base/files/file.h"
  10 #include "base/files/file_util.h"
  11 #include "base/logging.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "ui/events/ozone/evdev/event_device_info.h"
  14
  15 using base::File;
  16
  17 namespace ui {
  18
  19 TouchEventLogEvdev::TouchEventLogEvdev()
  20     : logged_events_(new TouchEvent[kDebugBufferSize]) {
  21 }
  22
  23 TouchEventLogEvdev::~TouchEventLogEvdev() {
  24 }
  25
  26 void TouchEventLogEvdev::Initialize(const EventDeviceInfo& devinfo) {
  27   device_name_ = devinfo.name();
  28   for (int code = ABS_X; code <= ABS_MAX; code++) {
  29     if (devinfo.HasAbsEvent(code)) {
  30       axes_.push_back(AbsAxisData(code, devinfo.GetAbsInfoByCode(code)));
  31     }
  32   }
  33 }
  34
  35 void TouchEventLogEvdev::ProcessEvent(size_t cur_slot, const input_event* ev) {
  36   if (ev->type == EV_ABS || ev->type == EV_SYN ||
  37       (ev->type == EV_KEY && ev->code == BTN_TOUCH)) {
  38     logged_events_[debug_buffer_tail_].ev = *ev;
  39     logged_events_[debug_buffer_tail_].slot = cur_slot;
  40     debug_buffer_tail_++;
  41     debug_buffer_tail_ %= kDebugBufferSize;
  42   }
  43 }
  44
  45 void TouchEventLogEvdev::DumpLog(const char* filename) {
  46   base::FilePath fp = base::FilePath(filename);
  47   File file(fp, File::FLAG_CREATE | File::FLAG_WRITE);
  48   std::string report_content("");
  49   std::string device_name_str =
  50       base::StringPrintf("# device: %s\n", device_name_.c_str());
  51   report_content += device_name_str;
  52   for (size_t i = 0; i < axes_.size(); ++i) {
  53     std::string absinfo = base::StringPrintf(
  54         "# absinfo: %d %d %d %d %d %d\n", axes_[i].code, axes_[i].info.maximum,
  55         axes_[i].info.maximum, axes_[i].info.fuzz, axes_[i].info.flat,
  56         axes_[i].info.resolution);
  57     report_content += absinfo;
  58   }
  59   for (int i = 0; i < kDebugBufferSize; ++i) {
  60     struct TouchEvent* te =
  61         &logged_events_[(debug_buffer_tail_ + i) % kDebugBufferSize];
  62     if (te->ev.time.tv_sec == 0 && te->ev.time.tv_usec == 0)
  63       continue;
  64     std::string event_string = base::StringPrintf(
  65         "E: %ld.%06ld %04x %04x %d %d\n", te->ev.time.tv_sec,
  66         te->ev.time.tv_usec, te->ev.type, te->ev.code, te->ev.value, te->slot);
  67     report_content += event_string;
  68   }
  69   file.Write(0, report_content.c_str(), report_content.length());
  70 }
  71
  72 TouchEventLogEvdev::AbsAxisData::AbsAxisData(int code,
  73                                              const input_absinfo& info)
  74     : code(code), info(info) {
  75 }
  76
  77 TouchEventLogEvdev::AbsAxisData::AbsAxisData(const AbsAxisData& other) =
  78     default;
  79
  80 TouchEventLogEvdev::AbsAxisData::~AbsAxisData() {
  81 }
  82
  83 }  // namespace ui