First round of dead file removal

obsolete/tone/tone.cc

Index: obsolete/tone/tone.cc
diff --git a/obsolete/tone/tone.cc b/obsolete/tone/tone.cc
deleted file mode 100755
index 77abc09d3d498a375ecdf687710e2fdcf7abf07f..0000000000000000000000000000000000000000
--- a/obsolete/tone/tone.cc
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- * Copyright 2008 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can
- * be found in the LICENSE file.
- */
-
-// NaCl audio tone demo
-//   render a simple tone to the audio device for a couple seconds
-
-#include <errno.h>
-#include <math.h>
-#include <pthread.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <sys/time.h>
-#if !defined(STANDALONE)
-#include <nacl/nacl_av.h>
-#endif
-#if defined(STANDALONE)
-#include "native_client/common/standalone.h"
-#endif
-
-const int kMaxDuration = 60;
-const int kMaxFrequency = 24000;
-const int kMaxAmplitude = 32000;
-const int kSampling = 48000;
-const int kDesiredSampleRate = 4096;
-const int kMaxDemoLoop = 500;
-const int kMinAmplitudeCutoff = 200;
-const float kRampTime = 0.25f;
-const float kPI = 3.14159265f;
-int g_duration = 3;
-int g_frequency = 1000;
-int g_amplitude = 16000;
-int g_loopcount = 1;
-
-struct AudioControl {
-  int             uid;
-  volatile bool   running;
-  volatile bool   enable_output;
-  pthread_t       thread_id;
-  int             sample_rate;
-  pthread_mutex_t start_barrier;
-};
-
-int global_audio_thread_exit = 0;
-
-
-double gettimed() {
-  timeval tv;
-  double sec, usec;
-  const float kUSec = 1.e6f;
-  gettimeofday(&tv, NULL);
-  sec = static_cast<double>(tv.tv_sec);
-  usec = static_cast<double>(tv.tv_usec);
-  return (sec * kUSec + usec) / kUSec;
-}
-
-
-// pumps the audio via nacl_audio_update
-// this is a very simple sine wave generator, with no mixing
-void* AudioThread(void *userdata) {
-  AudioControl *ac = reinterpret_cast<AudioControl *>(userdata);
-  int16_t sbuffer[kNaClAudioBufferLength];
-  size_t count = 0;
-  float delta = static_cast<float>(g_frequency) * (2.0f * kPI / kSampling);
-  bool to_silence = false;
-  bool from_silence = false;
-  float grad = 0.0f, fclock = 0.0f, amplitude = 0.0f;
-
-  printf("Audio thread: Starting up...\n");
-  printf("Audio thread: uid = 0x%0X\n", ac->uid);
-  printf("Audio thread: running = %s\n", ac->running ? "yes" : "no");
-  // This lock/unlock will stall until main thread releases lock.
-  // We do this because we can't call nacl_audio_update until
-  // after the audio system has been successfully initialized.
-  pthread_mutex_lock(&ac->start_barrier);
-  pthread_mutex_unlock(&ac->start_barrier);
-  printf("Audio thread: Entering output loop\n");
-  while (ac->running) {
-    bool last_enable = ac->enable_output;
-    if (0 != nacl_audio_stream(sbuffer, &count))
-      break;
-    bool now_enable = ac->enable_output;
-    // eliminate audio pops at post-startup and pre-shutdown
-    if ((last_enable) && (!now_enable)) {
-      // shutting down to silence
-      to_silence = true;
-      from_silence = false;
-      grad = 1.0f;
-    } else if ((!last_enable) && (now_enable)) {
-      // starting up, reset sine wave clock
-      fclock = 0.0f;
-      from_silence = true;
-      to_silence = false;
-      grad = 1.0f;
-    }
-    // output to buffer
-    count = count / 2;
-    for (size_t i = 0; i < count; i += 2) {
-      // sine wave
-      int16_t wave = static_cast<int16_t>(sinf(fclock) * amplitude);
-      // left channel
-      sbuffer[i+0] = wave;
-      // right channel
-      sbuffer[i+1] = wave;
-      // increment fclock by delta
-      fclock += delta;
-      // keep fclock within -2PI..2PI
-      if (fclock > 2.0f * kPI)
-        fclock = fclock - (2.0f * kPI);
-      // ramp up / ramp down amplitude in transitions
-      if (to_silence) {
-        grad *= 0.99f;
-        // ramp down amplitude
-        amplitude = grad * g_amplitude;
-        // if the wave gets close to 0, cut it
-        if (abs(wave) < kMinAmplitudeCutoff)
-          grad = 0.0f;
-      } else if (from_silence) {
-        grad *= 0.99f;
-        // ramp up amplitude
-        amplitude = (1.0f - grad) * g_amplitude;
-      }
-    }
-  }
-  printf("Audio thread: Shutting down...\n");
-  global_audio_thread_exit++;
-  return NULL;
-}
-
-
-// Initializes the audio system with the desired sample rate.
-// (The audio system might choose a different sample rate.)
-int InitAudioDemo(AudioControl *ac, int desired_samples) {
-  int r;
-  void *thread_result;
-
-  // init basic audio controller
-  ac->uid = 0xC0DE5EED;
-  ac->running = true;
-  ac->enable_output = false;
-  pthread_mutex_init(&ac->start_barrier, NULL);
-  pthread_mutex_lock(&ac->start_barrier);
-
-  // create audio thread
-  printf("Main thread: Spawning audio thread...\n");
-  int p = pthread_create(&ac->thread_id, NULL, AudioThread, ac);
-  if (0 != p) {
-    printf("Main thread: Unable to create audio thread!\n");
-    pthread_mutex_unlock(&ac->start_barrier);
-    nacl_audio_shutdown();
-    nacl_multimedia_shutdown();
-    return -1;
-  }
-
-  // initialize multimedia
-  r = nacl_multimedia_init(NACL_SUBSYSTEM_AUDIO);
-  if (r != 0) {
-    printf("Main thread: Couldn't init multimedia w/ audio\n");
-    ac->running = false;
-    pthread_mutex_unlock(&ac->start_barrier);
-    pthread_join(ac->thread_id, &thread_result);
-    return -1;
-  }
-
-  // Open the audio device
-  printf("Main thread: Desired samples: %d\n", desired_samples);
-  r = nacl_audio_init(NACL_AUDIO_FORMAT_STEREO_48K,
-                      desired_samples, &ac->sample_rate);
-  if (r != 0) {
-    printf("Main thread: Couldn't init nacl audio\n");
-    nacl_multimedia_shutdown();
-    pthread_mutex_unlock(&ac->start_barrier);
-    ac->running = false;
-    pthread_join(ac->thread_id, &thread_result);
-    return -1;
-  }
-  printf("Main thread: Obtained samples: %d\n", ac->sample_rate);
-
-  // Audio thread can go ahead and start now
-  pthread_mutex_unlock(&ac->start_barrier);
-
-  return 0;
-}
-
-
-void Sleep(double x) {
-  double start, current;
-  start = gettimed();
-  while (true) {
-    current = gettimed();
-    if ((current - start) > x) break;
-  }
-}
-
-
-// Runs the demo loop for a few seconds...
-void RunAudioDemo(AudioControl *ac) {
-  // the audio is being continuously output by the AudioThread.
-  // So we can just wait g_duration seconds here and do nothing...
-  // (we'll be rude and ask for timeofday over and over
-  // to exercise the cpu and memory while audio is playing.)
-  printf("Main thread: Doing something for a few seconds\n");
-  Sleep(0.2f);
-  ac->enable_output = true;
-  Sleep(static_cast<float>(g_duration));
-  ac->enable_output = false;
-  Sleep(0.2f);
-}
-
-
-void ShutdownAudioDemo(AudioControl *ac) {
-  void *thread_result;
-  // tell audio thread to exit
-  ac->running = false;
-  pthread_join(ac->thread_id, &thread_result);
-  nacl_audio_shutdown();
-  nacl_multimedia_shutdown();
-  printf("Main thread: Exited gracefully\n");
-}
-
-
-int ToneTest() {
-  AudioControl ac;
-  if (0 == InitAudioDemo(&ac, kDesiredSampleRate)) {
-    RunAudioDemo(&ac);
-    ShutdownAudioDemo(&ac);
-    printf("TEST PASSED\n");
-    return 0;
-  } else {
-    printf("Main thread: Unable to init audio\n");
-    return -1;
-  }
-}
-
-
-// If user specifies options on cmd line, parse them
-// here and update global settings as needed.
-void ParseCmdLineArgs(int argc, char **argv) {
-  // look for cmd line args
-  if (argc > 1) {
-    for (int i = 1; i < argc; ++i) {
-      if (argv[i] == strstr(argv[i], "-d")) {
-        int d = atoi(&argv[i][2]);
-        if ((d > 0) && (d < kMaxDuration)) {
-          g_duration = d;
-        }
-      } else if (argv[i] == strstr(argv[i], "-a")) {
-        int a = atoi(&argv[i][2]);
-        if ((a > 0) && (a < kMaxAmplitude)) {
-          g_amplitude = a;
-        }
-      } else if (argv[i] == strstr(argv[i], "-f")) {
-        int f = atoi(&argv[i][2]);
-        if ((f > 0) && (f < kMaxFrequency)) {
-          g_frequency = f;
-        }
-      } else if (argv[i] == strstr(argv[i], "-c")) {
-        int c = atoi(&argv[i][2]);
-        if ((c > 0) && (c < kMaxDemoLoop)) {
-          g_loopcount = c;
-        }
-      } else {
-        printf("Tone SDL Demo\n");
-        printf("usage: -f<n>   output tone at frequency n.\n");
-        printf("       -a<n>   amplitude\n");
-        printf("       -d<n>   duration of n seconds.\n");
-        printf("       -c<n>   demo loop count.\n");
-        printf("       --help  show this screen.\n");
-        exit(0);
-      }
-    }
-  }
-}
-
-
-// Parses cmd line options, initializes surface, runs the demo & shuts down.
-int main(int argc, char **argv) {
-  ParseCmdLineArgs(argc, argv);
-  for (int i = 0; i < g_loopcount; ++i) {
-    printf("Test %d, %d:\n", i, global_audio_thread_exit);
-    ToneTest();
-  }
-  return 0;
-}