blob: a4197a8192193bcd1d9507e7d777d9635f00fb95 [file] [log] [blame]
// 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;
}
}
} // namespace media