Loading media/java/android/media/MediaCodecInfo.java +23 −6 Original line number Diff line number Diff line Loading @@ -1372,16 +1372,33 @@ public final class MediaCodecInfo { * May return {@code null}, if the codec did not publish any measurement * data. * <p> * This is a performance estimate provided by the device manufacturer * based on full-speed decoding and encoding measurements in various configurations * This is a performance estimate provided by the device manufacturer based on statistical * sampling of full-speed decoding and encoding measurements in various configurations * of common video sizes supported by the codec. As such it should only be used to * compare individual codecs on the device. The value is not suitable for comparing * different devices or even different android releases for the same device. * <p> * The returned range corresponds to the fastest frame rates achieved in the tested * configurations. It is interpolated from the nearest frame size(s) tested. Codec * performance is severely impacted by other activity on the device, and can vary * significantly. * <em>On {@link android.os.Build.VERSION_CODES#M} release</em> the returned range * corresponds to the fastest frame rates achieved in the tested configurations. As * such, it should not be used to gauge guaranteed or even average codec performance * on the device. * <p> * <em>On {@link android.os.Build.VERSION_CODES#N} release</em> the returned range * corresponds closer to sustained performance <em>in tested configurations</em>. * One can expect to achieve sustained performance higher than the lower limit more than * 50% of the time, and higher than half of the lower limit at least 90% of the time * <em>in tested configurations</em>. * Conversely, one can expect performance lower than twice the upper limit at least * 90% of the time. * <p class=note> * Tested configurations use a single active codec. For use cases where multiple * codecs are active, applications can expect lower and in most cases significantly lower * performance. * <p class=note> * The returned range value is interpolated from the nearest frame size(s) tested. * Codec performance is severely impacted by other activity on the device as well * as environmental factors (such as battery level, temperature or power source), and can * vary significantly even in a steady environment. * <p class=note> * Use this method in cases where only codec performance matters, e.g. to evaluate if * a codec has any chance of meeting a performance target. Codecs are listed Loading Loading
media/java/android/media/MediaCodecInfo.java +23 −6 Original line number Diff line number Diff line Loading @@ -1372,16 +1372,33 @@ public final class MediaCodecInfo { * May return {@code null}, if the codec did not publish any measurement * data. * <p> * This is a performance estimate provided by the device manufacturer * based on full-speed decoding and encoding measurements in various configurations * This is a performance estimate provided by the device manufacturer based on statistical * sampling of full-speed decoding and encoding measurements in various configurations * of common video sizes supported by the codec. As such it should only be used to * compare individual codecs on the device. The value is not suitable for comparing * different devices or even different android releases for the same device. * <p> * The returned range corresponds to the fastest frame rates achieved in the tested * configurations. It is interpolated from the nearest frame size(s) tested. Codec * performance is severely impacted by other activity on the device, and can vary * significantly. * <em>On {@link android.os.Build.VERSION_CODES#M} release</em> the returned range * corresponds to the fastest frame rates achieved in the tested configurations. As * such, it should not be used to gauge guaranteed or even average codec performance * on the device. * <p> * <em>On {@link android.os.Build.VERSION_CODES#N} release</em> the returned range * corresponds closer to sustained performance <em>in tested configurations</em>. * One can expect to achieve sustained performance higher than the lower limit more than * 50% of the time, and higher than half of the lower limit at least 90% of the time * <em>in tested configurations</em>. * Conversely, one can expect performance lower than twice the upper limit at least * 90% of the time. * <p class=note> * Tested configurations use a single active codec. For use cases where multiple * codecs are active, applications can expect lower and in most cases significantly lower * performance. * <p class=note> * The returned range value is interpolated from the nearest frame size(s) tested. * Codec performance is severely impacted by other activity on the device as well * as environmental factors (such as battery level, temperature or power source), and can * vary significantly even in a steady environment. * <p class=note> * Use this method in cases where only codec performance matters, e.g. to evaluate if * a codec has any chance of meeting a performance target. Codecs are listed Loading
