tvi.webrtc

Class RendererCommon

java.lang.Object

tvi.webrtc.RendererCommon

public class RendererCommon
extends java.lang.Object

Static helper functions for renderer implementations.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	RendererCommon.GlDrawer Interface for rendering frames on an EGLSurface with specified viewport location.
static interface	RendererCommon.RendererEvents Interface for reporting rendering events.
static class	RendererCommon.ScalingType
static class	RendererCommon.VideoLayoutMeasure Helper class for determining layout size based on layout requirements, scaling type, and video aspect ratio.

Constructor Summary

Constructors

Constructor and Description
RendererCommon()

Method Summary

Modifier and Type	Method and Description
static float[]	convertMatrixFromAndroidGraphicsMatrix(android.graphics.Matrix matrix) Converts android.graphics.Matrix to a float[16] matrix array.
static android.graphics.Matrix	convertMatrixToAndroidGraphicsMatrix(float[] matrix4x4) Converts a float[16] matrix array to android.graphics.Matrix.
static android.graphics.Point	getDisplaySize(float minVisibleFraction, float videoAspectRatio, int maxDisplayWidth, int maxDisplayHeight) Calculate display size based on minimum fraction of the video that must remain visible, video aspect ratio, and maximum display size.
static android.graphics.Point	getDisplaySize(RendererCommon.ScalingType scalingType, float videoAspectRatio, int maxDisplayWidth, int maxDisplayHeight) Calculate display size based on scaling type, video aspect ratio, and maximum display size.
static float[]	getLayoutMatrix(boolean mirror, float videoAspectRatio, float displayAspectRatio) Returns layout transformation matrix that applies an optional mirror effect and compensates for video vs display aspect ratio.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RendererCommon

public RendererCommon()

Method Detail

getLayoutMatrix

public static float[] getLayoutMatrix(boolean mirror,
                                      float videoAspectRatio,
                                      float displayAspectRatio)

Returns layout transformation matrix that applies an optional mirror effect and compensates for video vs display aspect ratio.

convertMatrixToAndroidGraphicsMatrix

public static android.graphics.Matrix convertMatrixToAndroidGraphicsMatrix(float[] matrix4x4)

Converts a float[16] matrix array to android.graphics.Matrix.

convertMatrixFromAndroidGraphicsMatrix

public static float[] convertMatrixFromAndroidGraphicsMatrix(android.graphics.Matrix matrix)

Converts android.graphics.Matrix to a float[16] matrix array.

getDisplaySize

public static android.graphics.Point getDisplaySize(RendererCommon.ScalingType scalingType,
                                                    float videoAspectRatio,
                                                    int maxDisplayWidth,
                                                    int maxDisplayHeight)

Calculate display size based on scaling type, video aspect ratio, and maximum display size.

getDisplaySize

public static android.graphics.Point getDisplaySize(float minVisibleFraction,
                                                    float videoAspectRatio,
                                                    int maxDisplayWidth,
                                                    int maxDisplayHeight)

Calculate display size based on minimum fraction of the video that must remain visible, video aspect ratio, and maximum display size.