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Implement remaining aspect ratio calculations

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This commit is contained in:
Xavi Artigas 2012-10-19 14:35:10 +02:00
parent 3cfa87cbb7
commit dea0bd1f0b
1 changed files with 20 additions and 7 deletions
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27
gst-sdk/tutorials/android-tutorial-3/src/com/gst_sdk_tutorials/tutorial_3/GStreamerSurfaceView.java
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@ -25,27 +25,41 @@ public class GStreamerSurfaceView extends SurfaceView {
super(context);
}
// Called by the layout manager to find out our size and give us some rules
// Called by the layout manager to find out our size and give us some rules.
// We will try to maximize our size, and preserve the media's aspect ratio if
// we are given the freedom to do so.
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int width = 0, height = 0;
int wmode = View.MeasureSpec.getMode(widthMeasureSpec);
int hmode = View.MeasureSpec.getMode(heightMeasureSpec);
int wsize = View.MeasureSpec.getSize(widthMeasureSpec);
int hsize = View.MeasureSpec.getSize(heightMeasureSpec);
Log.i ("GStreamer", "onMeasure called with " + media_width + "x" + media_height);
// Obey width rules
switch (View.MeasureSpec.getMode(widthMeasureSpec)) {
switch (wmode) {
case View.MeasureSpec.AT_MOST:
if (hmode == View.MeasureSpec.EXACTLY) {
width = Math.min(hsize * media_width / media_height, wsize);
break;
}
case View.MeasureSpec.EXACTLY:
width = View.MeasureSpec.getSize(widthMeasureSpec);
width = wsize;
break;
case View.MeasureSpec.UNSPECIFIED:
width = media_width;
}
// Obey height rules
switch (View.MeasureSpec.getMode(heightMeasureSpec)) {
switch (hmode) {
case View.MeasureSpec.AT_MOST:
if (wmode == View.MeasureSpec.EXACTLY) {
height = Math.min(wsize * media_height / media_width, hsize);
break;
}
case View.MeasureSpec.EXACTLY:
height = View.MeasureSpec.getSize(heightMeasureSpec);
height = hsize;
break;
case View.MeasureSpec.UNSPECIFIED:
height = media_height;
@ -53,8 +67,7 @@ public class GStreamerSurfaceView extends SurfaceView {
// Preserve aspect ratio if we are allowed freedom in both axes
// FIXME: Implement the case where only one axis is free
if (View.MeasureSpec.getMode(heightMeasureSpec) == View.MeasureSpec.AT_MOST &&
View.MeasureSpec.getMode(widthMeasureSpec) == View.MeasureSpec.AT_MOST) {
if (hmode == View.MeasureSpec.AT_MOST && wmode == View.MeasureSpec.AT_MOST) {
int correct_height = width * media_height / media_width;
int correct_width = height * media_width / media_height;