Add getTransformMatrix to the SurfaceTexture API. (b0ba48c9) · Commits · e / os / android_frameworks_base

api/current.xml

+13 −0

Original line number	Diff line number	Diff line
		@@ -86020,6 +86020,19 @@
		<parameter name="texName" type="int">
		</parameter>
		</constructor>
		<method name="getTransformMatrix"
		return="void"
		abstract="false"
		native="false"
		synchronized="false"
		static="false"
		final="false"
		deprecated="not deprecated"
		visibility="public"
		>
		<parameter name="mtx" type="float[]">
		</parameter>
		</method>
		<method name="setOnFrameAvailableListener"
		return="void"
		abstract="false"

+10 −0

Original line number	Diff line number	Diff line
		@@ -82,6 +82,15 @@ static void SurfaceTexture_updateTexImage(JNIEnv* env, jobject clazz)
		surfaceTexture->updateTexImage();
		}

		static void SurfaceTexture_getTransformMatrix(JNIEnv* env, jobject clazz,
		jfloatArray jmtx)
		{
		sp<SurfaceTexture> surfaceTexture(getSurfaceTexture(env, clazz));
		float* mtx = env->GetFloatArrayElements(jmtx, NULL);
		surfaceTexture->getTransformMatrix(mtx);
		env->ReleaseFloatArrayElements(jmtx, mtx, 0);
		}

		// ----------------------------------------------------------------------------

		const char* const kSurfaceTextureClassPathName = "android/graphics/SurfaceTexture";
		@@ -91,6 +100,7 @@ static JNINativeMethod gSurfaceTextureMethods[] = {
		{"nativeClassInit", "()V", (void*)nativeClassInit },
		{"init", "(I)V", (void*)SurfaceTexture_init },
		{"updateTexImage", "()V", (void*)SurfaceTexture_updateTexImage },
		{"getTransformMatrixImpl", "([F)V", (void*)SurfaceTexture_getTransformMatrix },
		};

		static void nativeClassInit(JNIEnv* env, jclass clazz)

+25 −0

Original line number	Diff line number	Diff line
		@@ -79,6 +79,31 @@ public class SurfaceTexture {
		*/
		public native void updateTexImage();


		/**
		* Retrieve the 4x4 texture coordinate transform matrix associated with the texture image set by
		* the most recent call to updateTexImage.
		*
		* This transform matrix maps 2D homogeneous texture coordinates of the form (s, t, 0, 1) with s
		* and t in the inclusive range [0, 1] to the texture coordinate that should be used to sample
		* that location from the texture. Sampling the texture outside of the range of this transform
		* is undefined.
		*
		* The matrix is stored in column-major order so that it may be passed directly to OpenGL ES via
		* the glLoadMatrixf or glUniformMatrix4fv functions.
		*
		* @param mtx the array into which the 4x4 matrix will be stored. The array must have exactly
		* 16 elements.
		*/
		public void getTransformMatrix(float[] mtx) {
		if (mtx.length != 16) {
		throw new IllegalArgumentException();
		}
		getTransformMatrixImpl(mtx);
		}

		private native void getTransformMatrixImpl(float[] mtx);

		private native void init(int texName);

		/*