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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GLBLITHELPER_H_
#define GLBLITHELPER_H_
#include "GLContextTypes.h"
#include "GLConsts.h"
#include "nsSize.h"
#include "mozilla/Attributes.h"
#include "mozilla/gfx/Point.h"
namespace mozilla {
namespace layers {
class Image;
class PlanarYCbCrImage;
class GrallocImage;
class SurfaceTextureImage;
class MacIOSurfaceImage;
class EGLImageImage;
} // namespace layers
namespace gl {
class GLContext;
/** Buffer blitting helper */
class GLBlitHelper final
{
enum Channel
{
Channel_Y = 0,
Channel_Cb,
Channel_Cr,
Channel_Max,
};
/**
* BlitTex2D is used to copy blit the content of a GL_TEXTURE_2D object,
* BlitTexRect is used to copy blit the content of a GL_TEXTURE_RECT object,
* The difference between BlitTex2D and BlitTexRect is the texture type, which affect
* the fragment shader a bit.
*
* ConvertGralloc is used to color convert copy blit the GrallocImage into a
* normal RGB texture by egl_image_external extension
* ConvertPlnarYcbCr is used to color convert copy blit the PlanarYCbCrImage
* into a normal RGB texture by create textures of each color channel, and
* convert it in GPU.
* Convert type is created for canvas.
*/
enum BlitType
{
BlitTex2D,
BlitTexRect,
ConvertGralloc,
ConvertPlanarYCbCr,
ConvertSurfaceTexture,
ConvertEGLImage,
ConvertMacIOSurfaceImage
};
// The GLContext is the sole owner of the GLBlitHelper.
GLContext* mGL;
GLuint mTexBlit_Buffer;
GLuint mTexBlit_VertShader;
GLuint mTex2DBlit_FragShader;
GLuint mTex2DRectBlit_FragShader;
GLuint mTex2DBlit_Program;
GLuint mTex2DRectBlit_Program;
GLint mYFlipLoc;
GLint mTextureTransformLoc;
// Data for image blit path
GLuint mTexExternalBlit_FragShader;
GLuint mTexYUVPlanarBlit_FragShader;
GLuint mTexNV12PlanarBlit_FragShader;
GLuint mTexExternalBlit_Program;
GLuint mTexYUVPlanarBlit_Program;
GLuint mTexNV12PlanarBlit_Program;
GLuint mFBO;
GLuint mSrcTexY;
GLuint mSrcTexCb;
GLuint mSrcTexCr;
GLuint mSrcTexEGL;
GLint mYTexScaleLoc;
GLint mCbCrTexScaleLoc;
GLint mYuvColorMatrixLoc;
int mTexWidth;
int mTexHeight;
// Cache some uniform values
float mCurYScale;
float mCurCbCrScale;
void UseBlitProgram();
void SetBlitFramebufferForDestTexture(GLuint aTexture);
bool UseTexQuadProgram(BlitType target, const gfx::IntSize& srcSize);
bool InitTexQuadProgram(BlitType target = BlitTex2D);
void DeleteTexBlitProgram();
void BindAndUploadYUVTexture(Channel which, uint32_t width, uint32_t height, void* data, bool allocation);
void BindAndUploadEGLImage(EGLImage image, GLuint target);
bool BlitPlanarYCbCrImage(layers::PlanarYCbCrImage* yuvImage);
#ifdef XP_MACOSX
bool BlitMacIOSurfaceImage(layers::MacIOSurfaceImage* ioImage);
#endif
explicit GLBlitHelper(GLContext* gl);
friend class GLContext;
public:
~GLBlitHelper();
// If you don't have |srcFormats| for the 2nd definition,
// then you'll need the framebuffer_blit extensions to use
// the first BlitFramebufferToFramebuffer.
void BlitFramebufferToFramebuffer(GLuint srcFB, GLuint destFB,
const gfx::IntSize& srcSize,
const gfx::IntSize& destSize,
bool internalFBs = false);
void BlitFramebufferToFramebuffer(GLuint srcFB, GLuint destFB,
const gfx::IntSize& srcSize,
const gfx::IntSize& destSize,
const GLFormats& srcFormats,
bool internalFBs = false);
void BlitTextureToFramebuffer(GLuint srcTex, GLuint destFB,
const gfx::IntSize& srcSize,
const gfx::IntSize& destSize,
GLenum srcTarget = LOCAL_GL_TEXTURE_2D,
bool internalFBs = false);
void DrawBlitTextureToFramebuffer(GLuint srcTex, GLuint destFB,
const gfx::IntSize& srcSize,
const gfx::IntSize& destSize,
GLenum srcTarget = LOCAL_GL_TEXTURE_2D,
bool internalFBs = false);
void BlitFramebufferToTexture(GLuint srcFB, GLuint destTex,
const gfx::IntSize& srcSize,
const gfx::IntSize& destSize,
GLenum destTarget = LOCAL_GL_TEXTURE_2D,
bool internalFBs = false);
void BlitTextureToTexture(GLuint srcTex, GLuint destTex,
const gfx::IntSize& srcSize,
const gfx::IntSize& destSize,
GLenum srcTarget = LOCAL_GL_TEXTURE_2D,
GLenum destTarget = LOCAL_GL_TEXTURE_2D);
bool BlitImageToFramebuffer(layers::Image* srcImage, const gfx::IntSize& destSize,
GLuint destFB, OriginPos destOrigin);
bool BlitImageToTexture(layers::Image* srcImage, const gfx::IntSize& destSize,
GLuint destTex, GLenum destTarget, OriginPos destOrigin);
};
} // namespace gl
} // namespace mozilla
#endif // GLBLITHELPER_H_
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