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/* -*- 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 "mozilla/RefPtr.h"
#include "WebGLStrongTypes.h"
#include "WebGLTypes.h"
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 layers {
class Image;
class ImageContainer;
} // namespace layers
namespace webgl {
struct PackingInfo;
struct DriverUnpackInfo;
class TexUnpackBlob
{
public:
const uint32_t mAlignment;
const uint32_t mRowLength;
const uint32_t mImageHeight;
const uint32_t mSkipPixels;
const uint32_t mSkipRows;
const uint32_t mSkipImages;
const uint32_t mWidth;
const uint32_t mHeight;
const uint32_t mDepth;
const bool mSrcIsPremult;
bool mNeedsExactUpload;
protected:
TexUnpackBlob(const WebGLContext* webgl, TexImageTarget target, uint32_t rowLength,
uint32_t width, uint32_t height, uint32_t depth, bool isSrcPremult);
public:
virtual ~TexUnpackBlob() { }
protected:
bool ConvertIfNeeded(WebGLContext* webgl, const char* funcName,
const uint32_t rowLength, const uint32_t rowCount,
WebGLTexelFormat srcFormat,
const uint8_t* const srcBegin, const ptrdiff_t srcStride,
WebGLTexelFormat dstFormat, const ptrdiff_t dstStride,
const uint8_t** const out_begin,
UniqueBuffer* const out_anchoredBuffer) const;
public:
virtual bool HasData() const { return true; }
virtual bool Validate(WebGLContext* webgl, const char* funcName,
const webgl::PackingInfo& pi) = 0;
// Returns false when we've generated a WebGL error.
// Returns true but with a non-zero *out_error if we still need to generate a WebGL
// error.
virtual bool 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_error) const = 0;
};
class TexUnpackBytes final : public TexUnpackBlob
{
public:
const bool mIsClientData;
const uint8_t* const mPtr;
const size_t mAvailBytes;
TexUnpackBytes(const WebGLContext* webgl, TexImageTarget target, uint32_t width,
uint32_t height, uint32_t depth, bool isClientData, const uint8_t* ptr,
size_t availBytes);
virtual bool HasData() const override { return !mIsClientData || bool(mPtr); }
virtual bool Validate(WebGLContext* webgl, const char* funcName,
const webgl::PackingInfo& pi) override;
virtual bool 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_error) const override;
};
class TexUnpackImage final : public TexUnpackBlob
{
public:
const RefPtr<layers::Image> mImage;
TexUnpackImage(const WebGLContext* webgl, TexImageTarget target, uint32_t width,
uint32_t height, uint32_t depth, layers::Image* image,
bool isAlphaPremult);
~TexUnpackImage(); // Prevent needing to define layers::Image in the header.
virtual bool Validate(WebGLContext* webgl, const char* funcName,
const webgl::PackingInfo& pi) override;
virtual bool 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_error) const override;
};
class TexUnpackSurface final : public TexUnpackBlob
{
public:
const RefPtr<gfx::DataSourceSurface> mSurf;
TexUnpackSurface(const WebGLContext* webgl, TexImageTarget target, uint32_t width,
uint32_t height, uint32_t depth, gfx::DataSourceSurface* surf,
bool isAlphaPremult);
virtual bool Validate(WebGLContext* webgl, const char* funcName,
const webgl::PackingInfo& pi) override;
virtual bool 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_error) const override;
};
} // namespace webgl
} // namespace mozilla
#endif // TEX_UNPACK_BLOB_H_
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