gecko-dev/dom/canvas/TexUnpackBlob.h

163 строки
5.3 KiB
C++

/* -*- Mode: C++; tab-width: 4; 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 TEX_UNPACK_BLOB_H_
#define TEX_UNPACK_BLOB_H_
#include "GLContextTypes.h"
#include "GLTypes.h"
#include "WebGLStrongTypes.h"
template <class T>
class RefPtr;
namespace mozilla {
class UniqueBuffer;
class WebGLContext;
class WebGLTexture;
namespace dom {
class Element;
class HTMLCanvasElement;
class HTMLVideoElement;
} // namespace dom
namespace gfx {
class DataSourceSurface;
} // namespace gfx
namespace gl {
class GLContext;
} // namespace gl
namespace layers {
class Image;
class ImageContainer;
} // namespace layers
namespace webgl {
struct PackingInfo;
struct DriverUnpackInfo;
class TexUnpackBlob
{
public:
const GLsizei mWidth;
const GLsizei mHeight;
const GLsizei mDepth;
const bool mHasData;
protected:
TexUnpackBlob(GLsizei width, GLsizei height, GLsizei depth, bool hasData)
: mWidth(width)
, mHeight(height)
, mDepth(depth)
, mHasData(hasData)
{ }
public:
virtual ~TexUnpackBlob() {}
virtual bool ValidateUnpack(WebGLContext* webgl, const char* funcName, bool isFunc3D,
const webgl::PackingInfo& pi) = 0;
virtual void TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset,
GLenum* const out_glError) = 0;
static void OriginsForDOM(WebGLContext* webgl, gl::OriginPos* const out_src,
gl::OriginPos* const out_dst);
};
class TexUnpackBytes : public TexUnpackBlob
{
public:
const size_t mByteCount;
const void* const mBytes;
TexUnpackBytes(GLsizei width, GLsizei height, GLsizei depth, size_t byteCount,
const void* bytes)
: TexUnpackBlob(width, height, depth, bool(bytes))
, mByteCount(byteCount)
, mBytes(bytes)
{ }
virtual bool ValidateUnpack(WebGLContext* webgl, const char* funcName, bool isFunc3D,
const webgl::PackingInfo& pi) override;
virtual void TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset,
GLenum* const out_glError) override;
};
class TexUnpackImage : public TexUnpackBlob
{
public:
const RefPtr<layers::Image> mImage;
const bool mIsAlphaPremult;
TexUnpackImage(const RefPtr<layers::Image>& image, bool isAlphaPremult);
virtual ~TexUnpackImage() override;
virtual bool ValidateUnpack(WebGLContext* webgl, const char* funcName, bool isFunc3D,
const webgl::PackingInfo& pi) override
{
return true;
}
virtual void TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset,
GLenum* const out_glError) override;
};
class TexUnpackSurface : public TexUnpackBlob
{
public:
const RefPtr<gfx::SourceSurface> mSurf;
const bool mIsAlphaPremult;
TexUnpackSurface(const RefPtr<gfx::SourceSurface>& surf, bool isAlphaPremult);
virtual ~TexUnpackSurface() override;
virtual bool ValidateUnpack(WebGLContext* webgl, const char* funcName, bool isFunc3D,
const webgl::PackingInfo& pi) override
{
return true;
}
virtual void TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset,
GLenum* const out_glError) override;
protected:
static bool ConvertSurface(WebGLContext* webgl, const webgl::DriverUnpackInfo* dui,
gfx::DataSourceSurface* surf, bool isSurfAlphaPremult,
UniqueBuffer* const out_convertedBuffer,
uint8_t* const out_convertedAlignment,
bool* const out_outOfMemory);
static bool UploadDataSurface(bool isSubImage, WebGLContext* webgl,
TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, GLsizei width,
GLsizei height, gfx::DataSourceSurface* surf,
bool isSurfAlphaPremult, GLenum* const out_glError);
};
} // namespace webgl
} // namespace mozilla
#endif // TEX_UNPACK_BLOB_H_