blob: 73237bc7569f20482fbf5194613ab171105ba3d2 (
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
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/capture/video/chromeos/pixel_format_utils.h"
#include <drm_fourcc.h>
namespace media {
namespace {
struct SupportedFormat {
cros::mojom::HalPixelFormat hal_format;
ChromiumPixelFormat cr_format;
} const kSupportedFormats[] = {
// The Android camera HAL v3 has three types of mandatory pixel formats:
//
// 1. HAL_PIXEL_FORMAT_YCbCr_420_888 (YUV flexible format).
// 2. HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED (platform-specific format).
// 3. HAL_PIXEL_FORMAT_BLOB (for JPEG).
//
// We can't use HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED as it is highly
// platform specific and there is no way for Chrome to query the exact
// pixel layout of the implementation-defined buffer.
//
// On Android the framework requests the preview stream with the
// implementation-defined format, and as a result some camera HALs support
// only implementation-defined preview buffers. We should use the video
// capture stream in Chrome VCD as it is mandatory for the camera HAL to
// support YUV flexbile format video streams.
{cros::mojom::HalPixelFormat::HAL_PIXEL_FORMAT_YCbCr_420_888,
{PIXEL_FORMAT_NV12, gfx::BufferFormat::YUV_420_BIPLANAR}},
// FIXME(jcliang): MJPEG is not accurate; we should have BLOB or JPEG
{cros::mojom::HalPixelFormat::HAL_PIXEL_FORMAT_BLOB,
{PIXEL_FORMAT_MJPEG, gfx::BufferFormat::R_8}},
// Add more mappings when we have more devices.
};
} // namespace
std::vector<ChromiumPixelFormat> PixFormatHalToChromium(
cros::mojom::HalPixelFormat from) {
std::vector<ChromiumPixelFormat> ret;
for (const auto& it : kSupportedFormats) {
if (it.hal_format == from) {
ret.push_back(it.cr_format);
}
}
return ret;
}
uint32_t PixFormatVideoToDrm(VideoPixelFormat from) {
switch (from) {
case PIXEL_FORMAT_NV12:
return DRM_FORMAT_NV12;
case PIXEL_FORMAT_MJPEG:
return DRM_FORMAT_R8;
default:
// Unsupported format.
return 0;
}
}
absl::optional<gfx::BufferFormat> PixFormatVideoToGfx(
VideoPixelFormat pixel_format) {
switch (pixel_format) {
case PIXEL_FORMAT_MJPEG:
return gfx::BufferFormat::R_8;
case PIXEL_FORMAT_NV12:
return gfx::BufferFormat::YUV_420_BIPLANAR;
default:
return absl::nullopt;
}
}
} // namespace media
|
