summaryrefslogtreecommitdiff
path: root/dom/canvas/TexUnpackBlob.h
blob: d2328c587253e7dd299d27f2412cf0c6235dfd53 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
/* -*- 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_