1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QVIDEOFRAMECONVERSIONHELPER_P_H
5#define QVIDEOFRAMECONVERSIONHELPER_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <qvideoframe.h>
19#include <private/qsimd_p.h>
20
21QT_BEGIN_NAMESPACE
22
23// Converts to RGB32 or ARGB32_Premultiplied
24typedef void (QT_FASTCALL *VideoFrameConvertFunc)(const QVideoFrame &frame, uchar *output);
25typedef void(QT_FASTCALL *PixelsCopyFunc)(uint32_t *dst, const uint32_t *src, size_t size, uint32_t mask);
26
27VideoFrameConvertFunc qConverterForFormat(QVideoFrameFormat::PixelFormat format);
28
29void Q_MULTIMEDIA_EXPORT qCopyPixelsWithAlphaMask(uint32_t *dst,
30 const uint32_t *src,
31 size_t size,
32 QVideoFrameFormat::PixelFormat format,
33 bool srcAlphaVaries);
34
35void Q_MULTIMEDIA_EXPORT qCopyPixelsWithMask(uint32_t *dst, const uint32_t *src, size_t size, uint32_t mask);
36
37uint32_t Q_MULTIMEDIA_EXPORT qAlphaMask(QVideoFrameFormat::PixelFormat format);
38
39template<int a, int r, int g, int b>
40struct ArgbPixel
41{
42 quint32 data;
43 inline quint32 convert() const
44 {
45#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
46 return (((data >> (8*a)) & 0xff) << 24)
47 | (((data >> (8*r)) & 0xff) << 16)
48 | (((data >> (8*g)) & 0xff) << 8)
49 | ((data >> (8*b)) & 0xff);
50#else
51 return (((data >> (32-8*a)) & 0xff) << 24)
52 | (((data >> (32-8*r)) & 0xff) << 16)
53 | (((data >> (32-8*g)) & 0xff) << 8)
54 | ((data >> (32-8*b)) & 0xff);
55#endif
56 }
57};
58
59template<int r, int g, int b>
60struct RgbPixel
61{
62 quint32 data;
63 inline quint32 convert() const
64 {
65#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN
66 return 0xff000000
67 | (((data >> (8*r)) & 0xff) << 16)
68 | (((data >> (8*g)) & 0xff) << 8)
69 | ((data >> (8*b)) & 0xff);
70#else
71 return 0xff000000
72 | (((data >> (32-8*r)) & 0xff) << 16)
73 | (((data >> (32-8*g)) & 0xff) << 8)
74 | ((data >> (32-8*b)) & 0xff);
75#endif
76 }
77};
78
79template<typename Y>
80struct YPixel
81{
82 Y data;
83 static constexpr uint shift = (sizeof(Y) - 1)*8;
84 inline quint32 convert() const
85 {
86 uint y = (data >> shift) & 0xff;
87 return (0xff000000)
88 | (y << 16)
89 | (y << 8)
90 | (y);
91 }
92
93};
94
95
96using ARGB8888 = ArgbPixel<0, 1, 2, 3>;
97using ABGR8888 = ArgbPixel<0, 3, 2, 1>;
98using RGBA8888 = ArgbPixel<3, 0, 1, 2>;
99using BGRA8888 = ArgbPixel<3, 2, 1, 0>;
100using XRGB8888 = RgbPixel<1, 2, 3>;
101using XBGR8888 = RgbPixel<3, 2, 1>;
102using RGBX8888 = RgbPixel<0, 1, 2>;
103using BGRX8888 = RgbPixel<2, 1, 0>;
104
105#define FETCH_INFO_PACKED(frame) \
106 const uchar *src = frame.bits(0); \
107 int stride = frame.bytesPerLine(0); \
108 int width = frame.width(); \
109 int height = frame.height();
110
111#define FETCH_INFO_BIPLANAR(frame) \
112 const uchar *plane1 = frame.bits(0); \
113 const uchar *plane2 = frame.bits(1); \
114 int plane1Stride = frame.bytesPerLine(0); \
115 int plane2Stride = frame.bytesPerLine(1); \
116 int width = frame.width(); \
117 int height = frame.height();
118
119#define FETCH_INFO_TRIPLANAR(frame) \
120 const uchar *plane1 = frame.bits(0); \
121 const uchar *plane2 = frame.bits(1); \
122 const uchar *plane3 = frame.bits(2); \
123 int plane1Stride = frame.bytesPerLine(0); \
124 int plane2Stride = frame.bytesPerLine(1); \
125 int plane3Stride = frame.bytesPerLine(2); \
126 int width = frame.width(); \
127 int height = frame.height(); \
128
129#define MERGE_LOOPS(width, height, stride, bpp) \
130 if (stride == width * bpp) { \
131 width *= height; \
132 height = 1; \
133 stride = 0; \
134 }
135
136#define QT_MEDIA_ALIGN(boundary, ptr, x, length) \
137 for (; ((reinterpret_cast<qintptr>(ptr) & (boundary - 1)) != 0) && x < length; ++x)
138
139QT_END_NAMESPACE
140
141#endif // QVIDEOFRAMECONVERSIONHELPER_P_H
142
143

source code of qtmultimedia/src/multimedia/video/qvideoframeconversionhelper_p.h