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[Android] Move readCPUInfo into UserPreferences.java. Also, a little bit of documentation in UserPreferences.java.

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This commit is contained in:
Lioncash 2013-10-08 22:55:07 -04:00
parent da6b6f4f50
commit 8112c1e36f
3 changed files with 124 additions and 29 deletions
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2
android/phoenix/src/org/retroarch/browser/CoreSelection.java
View File

@ -31,7 +31,7 @@ public final class CoreSelection extends Activity implements AdapterView.OnItemC
Log.e(TAG, "Failed to load libretro_cores.cfg from assets.");
}
String cpuInfo = MainMenuActivity.readCPUInfo();
String cpuInfo = UserPreferences.readCPUInfo();
boolean cpuIsNeon = cpuInfo.contains("neon");
setContentView(R.layout.line_list);

17
android/phoenix/src/org/retroarch/browser/MainMenuActivity.java
View File

@ -102,22 +102,7 @@ public final class MainMenuActivity extends PreferenceActivity {
return instance;
}
public static String readCPUInfo() {
String result = "";
try {
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream("/proc/cpuinfo")));
String line;
while ((line = br.readLine()) != null)
result += line + "\n";
br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return result;
}
private byte[] loadAsset(String asset) throws IOException {
InputStream stream = getAssets().open(asset);

134
android/phoenix/src/org/retroarch/browser/preferences/UserPreferences.java
View File

@ -1,7 +1,10 @@
package org.retroarch.browser.preferences;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import org.retroarch.R;
@ -18,13 +21,20 @@ import android.view.Display;
import android.view.WindowManager;
/**
* Class retrieving, saving, or loading preferences.
* Utility class for retrieving, saving, or loading preferences.
*/
public final class UserPreferences
{
// Logging tag.
private static final String TAG = "UserPreferences";
/**
* Retrieves the path to the default location of the libretro config.
*
* @param ctx the current {@link Context}
*
* @return the path to the default location of the libretro config.
*/
public static String getDefaultConfigPath(Context ctx)
{
// Internal/External storage dirs.
@ -85,6 +95,12 @@ public final class UserPreferences
return "/mnt/sd" + append_path;
}
/**
* Re-reads the configuration file into the {@link SharedPreferences}
* instance that contains all of the settings for the front-end.
*
* @param ctx the current {@link Context}.
*/
public static void readbackConfigFile(Context ctx)
{
String path = getDefaultConfigPath(ctx);
@ -134,7 +150,13 @@ public final class UserPreferences
edit.commit();
}
/**
* Updates the libretro configuration file
* with new values if settings have changed.
*
* @param ctx the current {@link Context}.
*/
public static void updateConfigFile(Context ctx)
{
String path = getDefaultConfigPath(ctx);
@ -337,11 +359,13 @@ public final class UserPreferences
edit.remove(key);
}
public static SharedPreferences getPreferences(Context ctx)
{
return PreferenceManager.getDefaultSharedPreferences(ctx);
}
/**
* Sanitizes a libretro core path.
*
* @param path The path to the libretro core.
*
* @return the sanitized libretro path.
*/
private static String sanitizeLibretroPath(String path)
{
String sanitized_name = path.substring(
@ -349,10 +373,34 @@ public final class UserPreferences
path.lastIndexOf("."));
sanitized_name = sanitized_name.replace("neon", "");
sanitized_name = sanitized_name.replace("libretro_", "");
return sanitized_name;
}
public static double getRefreshRate(Context ctx)
/**
* Gets a {@link SharedPreferences} instance containing current settings.
*
* @param ctx the current {@link Context}.
*
* @return A SharedPreference instance containing current settings.
*/
public static SharedPreferences getPreferences(Context ctx)
{
return PreferenceManager.getDefaultSharedPreferences(ctx);
}
/**
* Retrieves an approximate display refresh rate for a device.
* <p>
* Note that some devices will return completely wrong values
* with the {@link Display#getRefreshRate()} method, and so
* this method attempts to ballpark an appropriate value.
*
* @param ctx the current {@link Context}.
*
* @return an approximately correct display refresh rate for a device.
*/
private static double getRefreshRate(Context ctx)
{
double rate = 0;
SharedPreferences prefs = getPreferences(ctx);
@ -378,6 +426,7 @@ public final class UserPreferences
return rate;
}
// Utility function used with getRefreshRate.
private static double getDisplayRefreshRate(Context ctx)
{
// Android is *very* likely to screw this up.
@ -393,8 +442,15 @@ public final class UserPreferences
return rate;
}
/**
* Gets the optimal sampling rate for low-latency audio playback.
*
* @param ctx the current {@link Context}.
*
* @return the optimal sampling rate for low-latency audio playback in Hz.
*/
@TargetApi(17)
public static int getLowLatencyOptimalSamplingRate(Context ctx)
private static int getLowLatencyOptimalSamplingRate(Context ctx)
{
AudioManager manager = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
@ -402,8 +458,15 @@ public final class UserPreferences
.getProperty(AudioManager.PROPERTY_OUTPUT_SAMPLE_RATE));
}
/**
* Gets the optimal buffer size for low-latency audio playback.
*
* @param ctx the current {@link Context}.
*
* @return the optimal output buffer size in decimal PCM frames.
*/
@TargetApi(17)
public static int getLowLatencyBufferSize(Context ctx)
private static int getLowLatencyBufferSize(Context ctx)
{
AudioManager manager = (AudioManager) ctx.getSystemService(Context.AUDIO_SERVICE);
int buffersize = Integer.parseInt(manager
@ -412,14 +475,34 @@ public final class UserPreferences
return buffersize;
}
/**
* Checks whether or not a device supports low-latency audio.
*
* @param ctx the current {@link Context}.
*
* @return true if the device supports low-latency audio; false otherwise.
*/
@TargetApi(17)
public static boolean hasLowLatencyAudio(Context ctx)
private static boolean hasLowLatencyAudio(Context ctx)
{
PackageManager pm = ctx.getPackageManager();
return pm.hasSystemFeature(PackageManager.FEATURE_AUDIO_LOW_LATENCY);
}
public static int getOptimalSamplingRate(Context ctx)
/**
* Gets the optimal audio sampling rate.
* <p>
* On Android 4.2+ devices this will retrieve the optimal low-latency sampling rate,
* since Android 4.2 adds support for low latency audio in general.
* <p>
* On other devices, it simply returns the regular optimal sampling rate
* as returned by the hardware.
*
* @param ctx The current {@link Context}.
*
* @return the optimal audio sampling rate in Hz.
*/
private static int getOptimalSamplingRate(Context ctx)
{
int ret;
if (Build.VERSION.SDK_INT >= 17)
@ -430,4 +513,31 @@ public final class UserPreferences
Log.i(TAG, "Using sampling rate: " + ret + " Hz");
return ret;
}
/**
* Retrieves the CPU info, as provided by /proc/cpuinfo.
*
* @return the CPU info.
*/
public static String readCPUInfo()
{
String result = "";
try
{
BufferedReader br = new BufferedReader(new InputStreamReader(
new FileInputStream("/proc/cpuinfo")));
String line;
while ((line = br.readLine()) != null)
result += line + "\n";
br.close();
}
catch (IOException ex)
{
ex.printStackTrace();
}
return result;
}
}