Package com.jogamp.opengl.util.texture

Class ImageSequence

java.lang.Object

com.jogamp.opengl.util.texture.ImageSequence

All Implemented Interfaces:

TextureSequence

public class ImageSequence
extends Object
implements TextureSequence

Simple TextureSequence implementation allowing existing textures or image streams to be used and replayed as frames.

Nested Class Summary

Nested classes/interfaces inherited from interface com.jogamp.opengl.util.texture.TextureSequence

TextureSequence.TexSeqEventListener<T extends TextureSequence>, TextureSequence.TextureFrame

Field Summary

Fields inherited from interface com.jogamp.opengl.util.texture.TextureSequence

sampler2D, samplerExternalOES

Constructor Summary

Constructors

Constructor	Description
ImageSequence(int textureUnit, boolean useBuildInTexLookup)

Method Summary

Modifier and Type	Method	Description
void	addFrame(GL gl, Texture tex)
void	addFrame(GL gl, Class<?> context, String imageResourcePath, String imageSuffix)
void	destroy(GL gl)
int	getCurrentIdx()
TextureSequence.TextureFrame	getFrame(int idx)
int	getFrameCount()
TextureSequence.TextureFrame	getLastTexture()	Returns the last updated texture.
boolean	getManualStepping()
TextureSequence.TextureFrame	getNextTexture(GL gl)	Returns the next texture to be rendered.
String	getRequiredExtensionsShaderStub()	In case a shader extension is required, based on the implementation and the runtime GL profile, this method returns the preprocessor macros, e.g.:
int	getTextureFragmentShaderHashCode()	Returns the hash code of the strings: TextureSequence.getTextureLookupFragmentShaderImpl() TextureSequence.getTextureSampler2DType()
String	getTextureLookupFragmentShaderImpl()	Returns the complete texture2D lookup function code of type
String	getTextureLookupFunctionName(String desiredFuncName)
int[]	getTextureMinMagFilter()
String	getTextureSampler2DType()	Returns either sampler2D or samplerExternalOES depending on TextureSequence.getLastTexture().getTexture().getTarget().
int	getTextureTarget()	Returns the texture target used by implementation.
int	getTextureUnit()	Return the texture unit used to render the current frame.
int[]	getTextureWrapST()
boolean	isTextureAvailable()	Returns true if texture source is ready and a texture is available via TextureSequence.getNextTexture(GL) and TextureSequence.getLastTexture().
void	setCurrentIdx(int idx)
void	setManualStepping(boolean v)
void	setParams(int magFilter, int minFilter, int wrapS, int wrapT)

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageSequence

public ImageSequence(int textureUnit,
                     boolean useBuildInTexLookup)

Method Detail

setParams

public void setParams(int magFilter,
                      int minFilter,
                      int wrapS,
                      int wrapT)

addFrame

public final void addFrame(GL gl,
                           Texture tex)

addFrame

public final void addFrame(GL gl,
                           Class<?> context,
                           String imageResourcePath,
                           String imageSuffix)
                    throws IOException

Throws:

IOException

getFrameCount

public final int getFrameCount()

getCurrentIdx

public final int getCurrentIdx()

setCurrentIdx

public final void setCurrentIdx(int idx)
                         throws IndexOutOfBoundsException

Throws:

IndexOutOfBoundsException

setManualStepping

public final void setManualStepping(boolean v)

getManualStepping

public final boolean getManualStepping()

getFrame

public final TextureSequence.TextureFrame getFrame(int idx)

destroy

public void destroy(GL gl)
             throws GLException

Throws:

GLException

getTextureTarget

public int getTextureTarget()

Description copied from interface: TextureSequence

Returns the texture target used by implementation.

Specified by:

getTextureTarget in interface TextureSequence

getTextureUnit

public int getTextureUnit()

Description copied from interface: TextureSequence

Return the texture unit used to render the current frame.

Specified by:

getTextureUnit in interface TextureSequence

getTextureMinMagFilter

public int[] getTextureMinMagFilter()

Specified by:

getTextureMinMagFilter in interface TextureSequence

getTextureWrapST

public int[] getTextureWrapST()

Specified by:

getTextureWrapST in interface TextureSequence

isTextureAvailable

public boolean isTextureAvailable()

Description copied from interface: TextureSequence

Returns true if texture source is ready and a texture is available via TextureSequence.getNextTexture(GL) and TextureSequence.getLastTexture().

Specified by:

isTextureAvailable in interface TextureSequence

getLastTexture

public TextureSequence.TextureFrame getLastTexture()
                                            throws IllegalStateException

Description copied from interface: TextureSequence

Returns the last updated texture.

In case the instance is just initialized, it shall return a TextureFrame object with valid attributes. The texture content may be undefined until the first call of TextureSequence.getNextTexture(GL).

Not blocking.

Specified by:

getLastTexture in interface TextureSequence

Throws:

IllegalStateException - if instance is not initialized

getNextTexture

public TextureSequence.TextureFrame getNextTexture(GL gl)
                                            throws IllegalStateException

Description copied from interface: TextureSequence

Returns the next texture to be rendered.

Implementation shall return the next frame if available, may block if a next frame may arrive soon. Otherwise implementation shall return the last frame.

Shall return null in case no next or last frame is available.

Specified by:

getNextTexture in interface TextureSequence

Throws:

IllegalStateException - if instance is not initialized

getRequiredExtensionsShaderStub

public String getRequiredExtensionsShaderStub()
                                       throws IllegalStateException

Description copied from interface: TextureSequence

In case a shader extension is required, based on the implementation and the runtime GL profile, this method returns the preprocessor macros, e.g.:

 #extension GL_OES_EGL_image_external : enable
 

Specified by:

getRequiredExtensionsShaderStub in interface TextureSequence

Throws:

IllegalStateException - if instance is not initialized

getTextureSampler2DType

public String getTextureSampler2DType()
                               throws IllegalStateException

Description copied from interface: TextureSequence

Returns either sampler2D or samplerExternalOES depending on TextureSequence.getLastTexture().getTexture().getTarget().

Specified by:

getTextureSampler2DType in interface TextureSequence

Throws:

IllegalStateException - if instance is not initialized

getTextureLookupFunctionName

public String getTextureLookupFunctionName(String desiredFuncName)
                                    throws IllegalStateException

Specified by:

getTextureLookupFunctionName in interface TextureSequence

Parameters:

desiredFuncName - desired lookup function name. If null or ignored by the implementation, a build-in name is returned.

Returns:

the final lookup function name

Throws:

IllegalStateException - if instance is not initialized

getTextureLookupFragmentShaderImpl

public String getTextureLookupFragmentShaderImpl()
                                          throws IllegalStateException

Description copied from interface: TextureSequence

Returns the complete texture2D lookup function code of type

   vec4 funcName(in getTextureSampler2DType() image, in vec2 texCoord) {
      vec4 texColor = do_something_with(image, texCoord);
      return texColor;
   }
 

funcName can be negotiated and queried via TextureSequence.getTextureLookupFunctionName(String).

Note: This function may return an empty string in case a build-in lookup function is being chosen. If the implementation desires so, TextureSequence.getTextureLookupFunctionName(String) will ignore the desired function name and returns the build-in lookup function name.

Specified by:

getTextureLookupFragmentShaderImpl in interface TextureSequence

Throws:

IllegalStateException - if instance is not initialized

See Also:

TextureSequence.getTextureLookupFunctionName(String), TextureSequence.getTextureSampler2DType()

getTextureFragmentShaderHashCode

public int getTextureFragmentShaderHashCode()

Description copied from interface: TextureSequence

Returns the hash code of the strings:

• TextureSequence.getTextureLookupFragmentShaderImpl()
• TextureSequence.getTextureSampler2DType()

Returns zero if texture is not available.

The returned hash code allows selection of a matching shader program for this TextureSequence instance.

Implementation shall cache the resulting hash code, which must be reset to zero if texture is not available.

Specified by:

getTextureFragmentShaderHashCode in interface TextureSequence