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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "ui/ozone/platform/drm/gpu/drm_framebuffer.h"
#include <utility>
#include "base/containers/contains.h"
#include "base/logging.h"
#include "ui/gfx/linux/drm_util_linux.h"
#include "ui/gfx/linux/gbm_buffer.h"
#include "ui/ozone/platform/drm/common/drm_util.h"
#include "ui/ozone/platform/drm/gpu/drm_device.h"
#include "ui/ozone/platform/drm/gpu/hardware_display_plane_manager.h"
namespace ui {
namespace {
// Some Display Controllers (e.g. Intel Gen 9.5) don't support AR/B30
// framebuffers, only XR/B30; this function indicates if an opaque format should
// be used instead of the non-opaque |buffer_format| for AddFramebuffer2().
bool ForceUsingOpaqueFormatWorkaround(
const scoped_refptr<DrmDevice>& drm_device,
uint32_t drm_fourcc) {
constexpr uint32_t kHighBitDepthARGBFormats[] = {
DRM_FORMAT_ARGB2101010, DRM_FORMAT_ABGR2101010, DRM_FORMAT_RGBA1010102,
DRM_FORMAT_BGRA1010102};
const bool is_high_bit_depth_format_with_alpha =
base::Contains(kHighBitDepthARGBFormats, drm_fourcc);
if (!is_high_bit_depth_format_with_alpha)
return false;
const std::vector<uint32_t>& supported_formats =
drm_device->plane_manager()->GetSupportedFormats();
return !base::Contains(supported_formats, drm_fourcc);
}
} // namespace
DrmFramebuffer::AddFramebufferParams::AddFramebufferParams() = default;
DrmFramebuffer::AddFramebufferParams::AddFramebufferParams(
const AddFramebufferParams& other) = default;
DrmFramebuffer::AddFramebufferParams::~AddFramebufferParams() = default;
// static
scoped_refptr<DrmFramebuffer> DrmFramebuffer::AddFramebuffer(
scoped_refptr<DrmDevice> drm_device,
DrmFramebuffer::AddFramebufferParams params) {
uint64_t modifiers[4] = {};
if (params.modifier != DRM_FORMAT_MOD_INVALID) {
for (size_t i = 0; i < params.num_planes; ++i)
modifiers[i] = params.modifier;
}
const auto buffer_format = GetBufferFormatFromFourCCFormat(params.format);
const uint32_t opaque_format =
GetFourCCFormatForOpaqueFramebuffer(buffer_format);
const auto drm_format =
ForceUsingOpaqueFormatWorkaround(drm_device, params.format)
? opaque_format
: params.format;
uint32_t framebuffer_id = 0;
if (!drm_device->AddFramebuffer2(params.width, params.height, drm_format,
params.handles, params.strides,
params.offsets, modifiers, &framebuffer_id,
params.flags)) {
VLOG(4) << "AddFramebuffer2:" << "size=" << params.width << "x"
<< params.height << " drm_format=" << DrmFormatToString(drm_format)
<< " fb_id=" << framebuffer_id << " flags=" << params.flags;
return nullptr;
}
uint32_t opaque_framebuffer_id = 0;
if (opaque_format != drm_format &&
!drm_device->AddFramebuffer2(params.width, params.height, opaque_format,
params.handles, params.strides,
params.offsets, modifiers,
&opaque_framebuffer_id, params.flags)) {
VLOG(4) << "AddFramebuffer2:" << "size=" << params.width << "x"
<< params.height << " drm_format=" << DrmFormatToString(drm_format)
<< " fb_id=" << opaque_framebuffer_id << " flags=" << params.flags;
drm_device->RemoveFramebuffer(framebuffer_id);
return nullptr;
}
return base::MakeRefCounted<DrmFramebuffer>(
std::move(drm_device), framebuffer_id, drm_format, opaque_framebuffer_id,
opaque_format, params.modifier, params.preferred_modifiers,
gfx::Size(params.width, params.height), params.is_original_buffer);
}
// static
scoped_refptr<DrmFramebuffer> DrmFramebuffer::AddFramebuffer(
scoped_refptr<DrmDevice> drm,
const GbmBuffer* buffer,
const gfx::Size& framebuffer_size,
std::vector<uint64_t> preferred_modifiers,
bool is_original_buffer) {
DCHECK(gfx::Rect(buffer->GetSize()).Contains(gfx::Rect(framebuffer_size)));
AddFramebufferParams params;
params.format = buffer->GetFormat();
params.modifier = buffer->GetFormatModifier();
params.width = framebuffer_size.width();
params.height = framebuffer_size.height();
params.num_planes = buffer->GetNumPlanes();
params.is_original_buffer = is_original_buffer;
params.preferred_modifiers = preferred_modifiers;
for (size_t i = 0; i < params.num_planes; ++i) {
params.handles[i] = buffer->GetPlaneHandle(i);
params.strides[i] = buffer->GetPlaneStride(i);
params.offsets[i] = buffer->GetPlaneOffset(i);
}
// AddFramebuffer2 only considers the modifiers if addfb_flags has
// DRM_MODE_FB_MODIFIERS set. We only set that when we've created
// a bo with modifiers, otherwise, we rely on the "no modifiers"
// behavior doing the right thing.
params.flags = 0;
if (IsAddfb2ModifierCapable(*drm) &&
params.modifier != DRM_FORMAT_MOD_INVALID) {
params.flags |= DRM_MODE_FB_MODIFIERS;
}
return AddFramebuffer(std::move(drm), params);
}
DrmFramebuffer::DrmFramebuffer(scoped_refptr<DrmDevice> drm_device,
uint32_t framebuffer_id,
uint32_t framebuffer_pixel_format,
uint32_t opaque_framebuffer_id,
uint32_t opaque_framebuffer_pixel_format,
uint64_t format_modifier,
std::vector<uint64_t> modifiers,
const gfx::Size& size,
bool is_original_buffer)
: drm_device_(std::move(drm_device)),
framebuffer_id_(framebuffer_id),
framebuffer_pixel_format_(framebuffer_pixel_format),
opaque_framebuffer_id_(opaque_framebuffer_id),
opaque_framebuffer_pixel_format_(opaque_framebuffer_pixel_format),
format_modifier_(format_modifier),
is_original_buffer_(is_original_buffer),
preferred_modifiers_(modifiers),
size_(size),
modeset_sequence_id_at_allocation_(drm_device_->modeset_sequence_id()) {}
DrmFramebuffer::~DrmFramebuffer() {
if (!drm_device_->RemoveFramebuffer(framebuffer_id_)) {
VLOG(4) << "RemoveFramebuffer";
}
if (opaque_framebuffer_id_ &&
!drm_device_->RemoveFramebuffer(opaque_framebuffer_id_)) {
VLOG(4) << "RemoveFramebuffer";
}
}
} // namespace ui
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