android/loghandler.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2014 Marcus Comstedt <marcus@mc.pp.se>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifdef ENABLE_DECODE
  21 #include <libsigrokdecode/libsigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
  22 #endif
  23
  24 #include <android/log.h>
  25
  26 #include <cstdint>
  27 #include <libsigrok/libsigrok.h>
  28
  29 #include "android/loghandler.hpp"
  30
  31 namespace pv {
  32
  33 static sr_log_callback prev_sr_log_cb;
  34 static void *prev_sr_log_cb_data;
  35
  36 #ifdef ENABLE_DECODE
  37 static srd_log_callback prev_srd_log_cb;
  38 static void *prev_srd_log_cb_data;
  39 #endif
  40
  41 int AndroidLogHandler::sr_callback(void *cb_data, int loglevel, const char *format, va_list args)
  42 {
  43         static const int prio[] = {
  44                 [SR_LOG_NONE] = ANDROID_LOG_SILENT,
  45                 [SR_LOG_ERR] = ANDROID_LOG_ERROR,
  46                 [SR_LOG_WARN] = ANDROID_LOG_WARN,
  47                 [SR_LOG_INFO] = ANDROID_LOG_INFO,
  48                 [SR_LOG_DBG] = ANDROID_LOG_DEBUG,
  49                 [SR_LOG_SPEW] = ANDROID_LOG_VERBOSE,
  50         };
  51         va_list args2;
  52         int ret;
  53
  54         /* This specific log callback doesn't need the void pointer data. */
  55         (void)cb_data;
  56
  57         /* Call the previously registered log callback (library's default). */
  58         va_copy(args2, args);
  59         if (prev_sr_log_cb)
  60                 prev_sr_log_cb(prev_sr_log_cb_data, loglevel, format, args2);
  61         va_end(args2);
  62
  63         /* Only output messages of at least the selected loglevel(s). */
  64         if (loglevel > sr_log_loglevel_get())
  65                 return SR_OK;
  66
  67         if (loglevel < SR_LOG_NONE)
  68                 loglevel = SR_LOG_NONE;
  69         else if (loglevel > SR_LOG_SPEW)
  70                 loglevel = SR_LOG_SPEW;
  71
  72         ret = __android_log_vprint(prio[loglevel], "sr", format, args);
  73
  74         return ret;
  75 }
  76
  77 int AndroidLogHandler::srd_callback(void *cb_data, int loglevel, const char *format, va_list args)
  78 {
  79 #ifdef ENABLE_DECODE
  80         static const int prio[] = {
  81                 [SRD_LOG_NONE] = ANDROID_LOG_SILENT,
  82                 [SRD_LOG_ERR] = ANDROID_LOG_ERROR,
  83                 [SRD_LOG_WARN] = ANDROID_LOG_WARN,
  84                 [SRD_LOG_INFO] = ANDROID_LOG_INFO,
  85                 [SRD_LOG_DBG] = ANDROID_LOG_DEBUG,
  86                 [SRD_LOG_SPEW] = ANDROID_LOG_VERBOSE,
  87         };
  88         va_list args2;
  89         int ret;
  90
  91         /* This specific log callback doesn't need the void pointer data. */
  92         (void)cb_data;
  93
  94         /* Call the previously registered log callback (library's default). */
  95         va_copy(args2, args);
  96         if (prev_srd_log_cb)
  97                 prev_srd_log_cb(prev_srd_log_cb_data, loglevel, format, args2);
  98         va_end(args2);
  99
 100         /* Only output messages of at least the selected loglevel(s). */
 101         if (loglevel > srd_log_loglevel_get())
 102                 return SRD_OK;
 103
 104         if (loglevel < SRD_LOG_NONE)
 105                 loglevel = SRD_LOG_NONE;
 106         else if (loglevel > SRD_LOG_SPEW)
 107                 loglevel = SRD_LOG_SPEW;
 108
 109         ret = __android_log_vprint(prio[loglevel], "srd", format, args);
 110
 111         return ret;
 112 #else
 113         return 0;
 114 #endif
 115 }
 116
 117 void AndroidLogHandler::install_callbacks()
 118 {
 119         sr_log_callback_get(&prev_sr_log_cb, &prev_sr_log_cb_data);
 120         sr_log_callback_set(sr_callback, nullptr);
 121 #ifdef ENABLE_DECODE
 122         srd_log_callback_get(&prev_srd_log_cb, &prev_srd_log_cb_data);
 123         srd_log_callback_set(srd_callback, nullptr);
 124 #endif
 125 }
 126
 127 } // namespace pv