We started redesigning GpuMemoryBuffer interface to handle multiple buffers [0].
[chromium-blink-merge.git] / ui / gl / gl_image_linux_dma_buffer.cc
blob080c9b5a2da306913b2fa734beef317b9061fb1f
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "ui/gl/gl_image_linux_dma_buffer.h"
7 #include <unistd.h>
9 #define FOURCC(a, b, c, d) \
10 ((static_cast<uint32>(a)) | (static_cast<uint32>(b) << 8) | \
11 (static_cast<uint32>(c) << 16) | (static_cast<uint32>(d) << 24))
13 #define DRM_FORMAT_ARGB8888 FOURCC('A', 'R', '2', '4')
14 #define DRM_FORMAT_XRGB8888 FOURCC('X', 'R', '2', '4')
16 namespace gfx {
17 namespace {
19 bool ValidFormat(unsigned internalformat, gfx::GpuMemoryBuffer::Format format) {
20 switch (internalformat) {
21 case GL_ATC_RGB_AMD:
22 return format == gfx::GpuMemoryBuffer::ATC;
23 case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
24 return format == gfx::GpuMemoryBuffer::ATCIA;
25 case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
26 return format == gfx::GpuMemoryBuffer::DXT1;
27 case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
28 return format == gfx::GpuMemoryBuffer::DXT5;
29 case GL_ETC1_RGB8_OES:
30 return format == gfx::GpuMemoryBuffer::ETC1;
31 case GL_RGB:
32 switch (format) {
33 case gfx::GpuMemoryBuffer::RGBX_8888:
34 return true;
35 case gfx::GpuMemoryBuffer::ATC:
36 case gfx::GpuMemoryBuffer::ATCIA:
37 case gfx::GpuMemoryBuffer::DXT1:
38 case gfx::GpuMemoryBuffer::DXT5:
39 case gfx::GpuMemoryBuffer::ETC1:
40 case gfx::GpuMemoryBuffer::RGBA_8888:
41 case gfx::GpuMemoryBuffer::BGRA_8888:
42 case gfx::GpuMemoryBuffer::YUV_420:
43 return false;
45 NOTREACHED();
46 return false;
47 case GL_RGBA:
48 switch (format) {
49 case gfx::GpuMemoryBuffer::BGRA_8888:
50 return true;
51 case gfx::GpuMemoryBuffer::ATC:
52 case gfx::GpuMemoryBuffer::ATCIA:
53 case gfx::GpuMemoryBuffer::DXT1:
54 case gfx::GpuMemoryBuffer::DXT5:
55 case gfx::GpuMemoryBuffer::ETC1:
56 case gfx::GpuMemoryBuffer::RGBX_8888:
57 case gfx::GpuMemoryBuffer::RGBA_8888:
58 case gfx::GpuMemoryBuffer::YUV_420:
59 return false;
61 NOTREACHED();
62 return false;
63 default:
64 return false;
68 EGLint FourCC(gfx::GpuMemoryBuffer::Format format) {
69 switch (format) {
70 case gfx::GpuMemoryBuffer::BGRA_8888:
71 return DRM_FORMAT_ARGB8888;
72 case gfx::GpuMemoryBuffer::RGBX_8888:
73 return DRM_FORMAT_XRGB8888;
74 case gfx::GpuMemoryBuffer::ATC:
75 case gfx::GpuMemoryBuffer::ATCIA:
76 case gfx::GpuMemoryBuffer::DXT1:
77 case gfx::GpuMemoryBuffer::DXT5:
78 case gfx::GpuMemoryBuffer::ETC1:
79 case gfx::GpuMemoryBuffer::RGBA_8888:
80 case gfx::GpuMemoryBuffer::YUV_420:
81 NOTREACHED();
82 return 0;
85 NOTREACHED();
86 return 0;
89 bool IsHandleValid(const base::FileDescriptor& handle) {
90 return handle.fd >= 0;
93 } // namespace
95 GLImageLinuxDMABuffer::GLImageLinuxDMABuffer(const gfx::Size& size,
96 unsigned internalformat)
97 : GLImageEGL(size), internalformat_(internalformat) {
100 GLImageLinuxDMABuffer::~GLImageLinuxDMABuffer() {
103 bool GLImageLinuxDMABuffer::Initialize(const base::FileDescriptor& handle,
104 gfx::GpuMemoryBuffer::Format format,
105 int pitch) {
106 if (!ValidFormat(internalformat_, format)) {
107 LOG(ERROR) << "Invalid format: " << internalformat_;
108 return false;
111 if (!IsHandleValid(handle)) {
112 LOG(ERROR) << "Invalid file descriptor: " << handle.fd;
113 return false;
116 // Note: If eglCreateImageKHR is successful for a EGL_LINUX_DMA_BUF_EXT
117 // target, the EGL will take a reference to the dma_buf.
118 EGLint attrs[] = {EGL_WIDTH,
119 size_.width(),
120 EGL_HEIGHT,
121 size_.height(),
122 EGL_LINUX_DRM_FOURCC_EXT,
123 FourCC(format),
124 EGL_DMA_BUF_PLANE0_FD_EXT,
125 handle.fd,
126 EGL_DMA_BUF_PLANE0_OFFSET_EXT,
128 EGL_DMA_BUF_PLANE0_PITCH_EXT,
129 pitch,
130 EGL_NONE};
131 return GLImageEGL::Initialize(
132 EGL_LINUX_DMA_BUF_EXT, static_cast<EGLClientBuffer>(NULL), attrs);
135 } // namespace gfx