diff options
Diffstat (limited to 'en/devices/audio/debugging.html')
| -rw-r--r-- | en/devices/audio/debugging.html | 69 |
1 files changed, 35 insertions, 34 deletions
diff --git a/en/devices/audio/debugging.html b/en/devices/audio/debugging.html index 9f8efb79..67e23d03 100644 --- a/en/devices/audio/debugging.html +++ b/en/devices/audio/debugging.html @@ -50,30 +50,31 @@ For Android 7.x, replace <code>/data/misc/media</code> with <code>/data/misc/audioserver</code>. Additionally, you must use a userdebug or eng build. If you use a userdebug build, then disable verity with:</p> -<pre> -<code>$ adb root && adb disable-verity && adb reboot</code> + +<pre class="devsite-terminal devsite-click-to-copy"> +adb root && adb disable-verity && adb reboot </pre> <h3 id="compile">Compile-time setup</h3> <ol> -<li><code>$ cd frameworks/av/services/audioflinger</code></li> + <li><code class="devsite-terminal">cd frameworks/av/services/audioflinger</code></li> <li>Edit <code>Configuration.h</code>.</li> <li>Uncomment <code>#define TEE_SINK</code>.</li> <li>Re-build <code>libaudioflinger.so</code>.</li> -<li><code>$ adb root</code></li> -<li><code>$ adb remount</code></li> +<li><code class="devsite-terminal">adb root</code></li> +<li><code class="devsite-terminal">adb remount</code></li> <li>Push or sync the new <code>libaudioflinger.so</code> to the device's <code>/system/lib</code>.</li> </ol> <h3 id="runtime">Run-time setup</h3> <ol> -<li><code>$ adb shell getprop | grep ro.debuggable</code> +<li><code class="devsite-terminal">adb shell getprop | grep ro.debuggable</code> <br />Confirm that the output is: <code>[ro.debuggable]: [1]</code> </li> -<li><code>$ adb shell</code></li> -<li><code>$ ls -ld /data/misc/media</code> +<li><code class="devsite-terminal">adb shell</code></li> +<li><code class="devsite-terminal">ls -ld /data/misc/media</code> <br /> <p> Confirm that the output is: @@ -81,20 +82,19 @@ Confirm that the output is: <pre> drwx------ media media ... media </pre> -<br /> <p> If the directory does not exist, create it as follows: </p> -<pre> -$ mkdir /data/misc/media -$ chown media:media /data/misc/media +<pre class="devsite-click-to-copy"> +<code class="devsite-terminal">mkdir /data/misc/media</code> +<code class="devsite-terminal">chown media:media /data/misc/media</code> </pre> </li> -<li><code>$ echo af.tee=# > /data/local.prop</code> +<li><code class="devsite-terminal">echo af.tee=# > /data/local.prop</code> <br />Where the <code>af.tee</code> value is a number described below. </li> -<li><code>$ chmod 644 /data/local.prop</code></li> -<li><code>$ reboot</code></li> +<li><code class="devsite-terminal">chmod 644 /data/local.prop</code></li> +<li><code class="devsite-terminal">reboot</code></li> </ol> <h4>Values for <code>af.tee</code> property</h4> @@ -120,7 +120,7 @@ but you can get similar results using "4." <ol> <li>Run your audio test.</li> -<li><code>$ adb shell dumpsys media.audio_flinger</code></li> +<li><code class="devsite-terminal">adb shell dumpsys media.audio_flinger</code></li> <li>Look for a line in dumpsys output such as this:<br /> <code>tee copied to /data/misc/media/20131010101147_2.wav</code> <br />This is a PCM .wav file. @@ -165,10 +165,10 @@ Restore your build and device as follows: <li>Push or sync the restored <code>libaudioflinger.so</code> to the device's <code>/system/lib</code>. </li> -<li><code>$ adb shell</code></li> -<li><code>$ rm /data/local.prop</code></li> -<li><code>$ rm /data/misc/media/*.wav</code></li> -<li><code>$ reboot</code></li> +<li><code class="devsite-terminal">adb shell</code></li> +<li><code class="devsite-terminal">rm /data/local.prop</code></li> +<li><code class="devsite-terminal">rm /data/misc/media/*.wav</code></li> +<li><code class="devsite-terminal">reboot</code></li> </ol> <h2 id="mediaLog">media.log</h2> @@ -345,7 +345,7 @@ First, you need to add logs to your code. <p> In <code>FastMixer</code> and <code>FastCapture</code> threads, use code such as this: </p> -<pre> +<pre class="devsite-click-to-copy"> logWriter->log("string"); logWriter->logf("format", parameters); logWriter->logTimestamp(); @@ -359,7 +359,7 @@ there is no need for mutual exclusion. <p> In other AudioFlinger threads, use <code>mNBLogWriter</code>: </p> -<pre> +<pre class="devsite-click-to-copy"> mNBLogWriter->log("string"); mNBLogWriter->logf("format", parameters); mNBLogWriter->logTimestamp(); @@ -397,19 +397,19 @@ The full <code>NBLog</code> API is at <code>frameworks/av/include/media/nbaio/NB <code>ro.test_harness</code> is <code>1</code>. You can enable it by: </p> -<pre> -$ adb root -$ adb shell -$ echo ro.test_harness=1 > /data/local.prop -$ chmod 644 /data/local.prop -$ reboot +<pre class="devsite-click-to-copy"> +<code class="devsite-terminal">adb root</code> +<code class="devsite-terminal">adb shell</code> +<code class="devsite-terminal">echo ro.test_harness=1 > /data/local.prop</code> +<code class="devsite-terminal">chmod 644 /data/local.prop</code> +<code class="devsite-terminal">reboot</code> </pre> <p> The connection is lost during reboot, so: </p> -<pre> -$ adb shell +<pre class="devsite-terminal devsite-click-to-copy"> +adb shell </pre> The command <code>ps media</code> will now show two processes: @@ -427,8 +427,8 @@ Note the process ID of <code>mediaserver</code> for later. You can manually request a log dump at any time. This command shows logs from all the active and recent timelines, and then clears them: </p> -<pre> -$ dumpsys media.log +<pre class="devsite-terminal devsite-click-to-copy"> +dumpsys media.log </pre> <p> @@ -443,8 +443,9 @@ Now try killing <code>mediaserver</code> process: <code>kill -9 #</code>, where the process ID you noted earlier. You should see a dump from <code>media.log</code> in the main <code>logcat</code>, showing all the logs leading up to the crash. </p> -<pre> -$ dumpsys media.log + +<pre class="devsite-terminal devsite-click-to-copy"> +dumpsys media.log </pre> </body> |