1 // Copyright 2015 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. 4 // Note: ported from Chromium commit head: a9d98e6 5 6 #ifndef NATIVE_PIXMAP_HANDLE_H_ 7 #define NATIVE_PIXMAP_HANDLE_H_ 8 9 #include <vector> 10 11 #include "base/file_descriptor_posix.h" 12 13 namespace media { 14 15 // NativePixmapPlane is used to carry the plane related information for GBM 16 // buffer. More fields can be added if they are plane specific. 17 struct NativePixmapPlane { 18 // This is the same value as DRM_FORMAT_MOD_INVALID, which is not a valid 19 // modifier. We use this to indicate that layout information 20 // (tiling/compression) if any will be communicated out of band. 21 static constexpr uint64_t kNoModifier = 0x00ffffffffffffffULL; 22 23 NativePixmapPlane(); 24 NativePixmapPlane(int stride, 25 int offset, 26 uint64_t size, 27 uint64_t modifier = kNoModifier); 28 NativePixmapPlane(const NativePixmapPlane& other); 29 ~NativePixmapPlane(); 30 31 // The strides and offsets in bytes to be used when accessing the buffers via 32 // a memory mapping. One per plane per entry. 33 int stride; 34 int offset; 35 // Size in bytes of the plane. 36 // This is necessary to map the buffers. 37 uint64_t size; 38 // The modifier is retrieved from GBM library and passed to EGL driver. 39 // Generally it's platform specific, and we don't need to modify it in 40 // Chromium code. Also one per plane per entry. 41 uint64_t modifier; 42 }; 43 44 struct NativePixmapHandle { 45 NativePixmapHandle(); 46 NativePixmapHandle(const NativePixmapHandle& other); 47 48 ~NativePixmapHandle(); 49 50 // File descriptors for the underlying memory objects (usually dmabufs). 51 std::vector<base::FileDescriptor> fds; 52 std::vector<NativePixmapPlane> planes; 53 }; 54 55 } // namespace media 56 57 #endif // NATIVE_PIXMAP_HANDLE_H_ 58
