loliball/media3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add method to compile program from shader paths in GlUtil

Browse Source 
This method will be useful for adding Open GL to the Transformer.

PiperOrigin-RevId: 394420744
This commit is contained in:
kimvde 2021-09-02 11:15:47 +01:00 committed by bachinger
parent 68eff51d96
commit 373db56a52
2 changed files with 29 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
demos/gl/src/main/java/com/google/android/exoplayer2/gldemo/BitmapOverlayVideoProcessor.java
View File

@ -28,9 +28,7 @@ import androidx.annotation.Nullable;
import com.google.android.exoplayer2.C;
import com.google.android.exoplayer2.util.Assertions;
import com.google.android.exoplayer2.util.GlUtil;
import com.google.android.exoplayer2.util.Util;
import java.io.IOException;
import java.io.InputStream;
import java.util.Locale;
import javax.microedition.khronos.opengles.GL10;
@ -79,10 +77,15 @@ import javax.microedition.khronos.opengles.GL10;
@Override
public void initialize() {
String vertexShaderCode =
loadAssetAsString(context, "bitmap_overlay_video_processor_vertex.glsl");
String fragmentShaderCode =
loadAssetAsString(context, "bitmap_overlay_video_processor_fragment.glsl");
String vertexShaderCode;
String fragmentShaderCode;
try {
vertexShaderCode = GlUtil.loadAsset(context, "bitmap_overlay_video_processor_vertex.glsl");
fragmentShaderCode =
GlUtil.loadAsset(context, "bitmap_overlay_video_processor_fragment.glsl");
} catch (IOException e) {
throw new IllegalStateException(e);
}
program = GlUtil.compileProgram(vertexShaderCode, fragmentShaderCode);
GlUtil.Attribute[] attributes = GlUtil.getAttributes(program);
GlUtil.Uniform[] uniforms = GlUtil.getUniforms(program);
@ -156,16 +159,4 @@ import javax.microedition.khronos.opengles.GL10;
GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, /* first= */ 0, /* count= */ 4);
GlUtil.checkGlError();
}
private static String loadAssetAsString(Context context, String assetFileName) {
@Nullable InputStream inputStream = null;
try {
inputStream = context.getAssets().open(assetFileName);
return Util.fromUtf8Bytes(Util.toByteArray(inputStream));
} catch (IOException e) {
throw new IllegalStateException(e);
} finally {
Util.closeQuietly(inputStream);
}
}
}

20
library/common/src/main/java/com/google/android/exoplayer2/util/GlUtil.java
View File

@ -31,6 +31,8 @@ import androidx.annotation.DoNotInline;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
import com.google.android.exoplayer2.C;
import java.io.IOException;
import java.io.InputStream;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
@ -435,6 +437,24 @@ public final class GlUtil {
return byteBuffer.order(ByteOrder.nativeOrder()).asFloatBuffer();
}
/**
* Loads a file from the assets folder.
*
* @param context The {@link Context}.
* @param assetPath The path to the file to load, from the assets folder.
* @return The content of the file to load.
* @throws IOException If the file couldn't be read.
*/
public static String loadAsset(Context context, String assetPath) throws IOException {
@Nullable InputStream inputStream = null;
try {
inputStream = context.getAssets().open(assetPath);
return Util.fromUtf8Bytes(Util.toByteArray(inputStream));
} finally {
Util.closeQuietly(inputStream);
}
}
/**
* Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and
* GL_CLAMP_TO_EDGE wrapping.