/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2021, Ideas on Board Oy
*
* drm.h - DRM/KMS Helpers
*/
#pragma once
#include <array>
#include <list>
#include <map>
#include <memory>
#include <stdint.h>
#include <string>
#include <vector>
#include <libcamera/base/signal.h>
#include <libcamera/base/span.h>
#include <libdrm/drm.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
namespace libcamera {
class FrameBuffer;
class PixelFormat;
class Size;
} /* namespace libcamera */
namespace DRM {
class Device;
class Plane;
class Property;
class PropertyValue;
class Object
{
public:
enum Type {
TypeCrtc = DRM_MODE_OBJECT_CRTC,
TypeConnector = DRM_MODE_OBJECT_CONNECTOR,
TypeEncoder = DRM_MODE_OBJECT_ENCODER,
TypeMode = DRM_MODE_OBJECT_MODE,
TypeProperty = DRM_MODE_OBJECT_PROPERTY,
TypeFb = DRM_MODE_OBJECT_FB,
TypeBlob = DRM_MODE_OBJECT_BLOB,
TypePlane = DRM_MODE_OBJECT_PLANE,
TypeAny = DRM_MODE_OBJECT_ANY,
};
Object(Device *dev, uint32_t id, Type type);
virtual ~Object();
Device *device() const { return dev_; }
uint32_t id() const { return id_; }
Type type() const { return type_; }
const Property *property(const std::string &name) const;
const PropertyValue *propertyValue(const std::string &name) const;
const std::vector<PropertyValue> &properties() const { return properties_; }
protected:
virtual int setup()
{
return 0;
}
uint32_t id_;
private:
friend Device;
Device *dev_;
Type type_;
std::vector<PropertyValue> properties_;
};
class Property : public Object
{
public:
enum Type {
TypeUnknown = 0,
TypeRange,
TypeEnum,
TypeBlob,
TypeBitmask,
TypeObject,
TypeSignedRange,
};
Property(Device *dev, drmModePropertyRes *property);
Type type() const { return type_; }
const std::string &name() const { return name_; }
bool isImmutable() const { return flags_ & DRM_MODE_PROP_IMMUTABLE; }
const std::vector<uint64_t> values() const { return values_; }
const std::map<uint32_t, std::string> &enums() const { return enums_; }
const std::vector<uint32_t> blobs() const { return blobs_; }
private:
Type type_;
std::string name_;
uint32_t flags_;
std::vector<uint64_t> values_;
std::map<uint32_t, std::string> enums_;
std::vector<uint32_t> blobs_;
};
class PropertyValue
{
public:
PropertyValue(uint32_t id, uint64_t value)
: id_(id), value_(value)
{
}
uint32_t id() const { return id_; }
uint32_t value() const { return value_; }
private:
uint32_t id_;
uint64_t value_;
};
class Blob : public Object
{
public:
Blob(Device *dev, const libcamera::Span<const uint8_t> &data);
~Blob();
bool isValid() const { return id() != 0; }
};
class Mode : public drmModeModeInfo
{
public:
Mode(const drmModeModeInfo &mode);
std::unique_ptr<Blob> toBlob(Device *dev) const;
};
class Crtc : public Object
{
public:
Crtc(Device *dev, const drmModeCrtc *crtc, unsigned int index);
unsigned int index() const { return index_; }
const std::vector<const Plane *> &planes() const { return planes_; }
private:
friend Device;
unsigned int index_;
std::vector<const Plane *> planes_;
};
class Encoder : public Object
{
public:
Encoder(Device *dev, const drmModeEncoder *encoder);
uint32_t type() const { return type_; }
const std::vector<const Crtc *> &possibleCrtcs() const { return possibleCrtcs_; }
private:
uint32_t type_;
std::vector<const Crtc *> possibleCrtcs_;
};
class Connector : public Object
{
public:
enum Status {
Connected,
Disconnected,
Unknown,
};
Connector(Device *dev, const drmModeConnector *connector);
uint32_t type() const { return type_; }
const std::string &name() const { return name_; }
Status status() const { return status_; }
const std::vector<const Encoder *> &encoders() const { return encoders_; }
const std::vector<Mode> &modes() const { return modes_; }
private:
uint32_t type_;
std::string name_;
Status status_;
std::vector<const Encoder *> encoders_;
std::vector<Mode> modes_;
};
class Plane : public Object
{
public:
enum Type {
TypeOverlay,
TypePrimary,
TypeCursor,
};
Plane(Device *dev, const drmModePlane *plane);
Type type() const { return type_; }
const std::vector<uint32_t> &formats() const { return formats_; }
const std::vector<const Crtc *> &possibleCrtcs() const { return possibleCrtcs_; }
bool supportsFormat(const libcamera::PixelFormat &format) const;
protected:
int setup() override;
private:
friend class Device;
Type type_;
std::vector<uint32_t> formats_;
std::vector<const Crtc *> possibleCrtcs_;
uint32_t possibleCrtcsMask_;
};
class FrameBuffer : public Object
{
public:
struct Plane {
uint32_t handle;
};
~FrameBuffer();
private:
friend class Device;
FrameBuffer(Device *dev);
std::map<int, Plane> planes_;
};
class AtomicRequest
{
public:
enum Flags {
FlagAllowModeset = (1 << 0),
FlagAsync = (1 << 1),
FlagTestOnly = (1 << 2),
};
AtomicRequest(Device *dev);
~AtomicRequest();
Device *device() const { return dev_; }
bool isValid() const { return valid_; }
int addProperty(const Object *object, const std::string &property,
uint64_t value);
int addProperty(const Object *object, const std::string &property,
std::unique_ptr<Blob> blob);
int commit(unsigned int flags = 0);
private:
AtomicRequest(const AtomicRequest &) = delete;
AtomicRequest(const AtomicRequest &&) = delete;
AtomicRequest &operator=(const AtomicRequest &) = delete;
AtomicRequest &operator=(const AtomicRequest &&) = delete;
int addProperty(uint32_t object, uint32_t property, uint64_t value);
Device *dev_;
bool valid_;
drmModeAtomicReq *request_;
std::list<std::unique_ptr<Blob>> blobs_;
};
class Device
{
public:
Device();
~Device();
int init();
int fd() const { return fd_; }
const std::list<Crtc> &crtcs() const { return crtcs_; }
const std::list<Encoder> &encoders() const { return encoders_; }
const std::list<Connector> &connectors() const { return connectors_; }
const std::list<Plane> &planes() const { return planes_; }
const std::list<Property> &properties() const { return properties_; }
const Object *object(uint32_t id);
std::unique_ptr<FrameBuffer> createFrameBuffer(
const libcamera::FrameBuffer &buffer,
const libcamera::PixelFormat &format,
const libcamera::Size &size,
const std::array<uint32_t, 4> &strides);
libcamera::Signal<AtomicRequest *> requestComplete;
private:
Device(const Device &) = delete;
Device(const Device &&) = delete;
Device &operator=(const Device &) = delete;
Device &operator=(const Device &&) = delete;
int openCard();
int getResources();
void drmEvent();
static void pageFlipComplete(int fd, unsigned int sequence,
unsigned int tv_sec, unsigned int tv_usec,
void *user_data);
int fd_;
std::list<Crtc> crtcs_;
std::list<Encoder> encoders_;
std::list<Connector> connectors_;
std::list<Plane> planes_;
std::list<Property> properties_;
std::map<uint32_t, Object *> objects_;
};
} /* namespace DRM */
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</pre></td>
<td class='lines'><pre><code><span class="hl com">/* SPDX-License-Identifier: GPL-2.0-or-later */</span>
<span class="hl com">/*</span>
<span class="hl com"> * Copyright (C) 2021, Google Inc.</span>
<span class="hl com"> *</span>
<span class="hl com"> * fence.cpp - Fence test</span>
<span class="hl com"> */</span>
<span class="hl ppc">#include <iostream></span>
<span class="hl ppc">#include <memory></span>
<span class="hl ppc">#include <sys/eventfd.h></span>
<span class="hl ppc">#include <unistd.h></span>
<span class="hl ppc">#include <libcamera/base/event_dispatcher.h></span>
<span class="hl ppc">#include <libcamera/base/thread.h></span>
<span class="hl ppc">#include <libcamera/base/timer.h></span>
<span class="hl ppc">#include <libcamera/base/unique_fd.h></span>
<span class="hl ppc">#include <libcamera/base/utils.h></span>
<span class="hl ppc">#include <libcamera/fence.h></span>
<span class="hl ppc">#include <libcamera/framebuffer_allocator.h></span>
<span class="hl ppc">#include</span> <span class="hl pps">"camera_test.h"</span><span class="hl ppc"></span>
<span class="hl ppc">#include</span> <span class="hl pps">"test.h"</span><span class="hl ppc"></span>
<span class="hl kwa">using namespace</span> libcamera<span class="hl opt">;</span>
<span class="hl kwa">using namespace</span> std<span class="hl opt">;</span>
<span class="hl kwa">using namespace</span> <span class="hl kwc">std</span><span class="hl opt">::</span>chrono_literals<span class="hl opt">;</span>
<span class="hl kwc">class</span> FenceTest <span class="hl opt">:</span> <span class="hl kwc">public</span> CameraTest<span class="hl opt">,</span> <span class="hl kwc">public</span> Test
<span class="hl opt">{</span>
<span class="hl kwc">public</span><span class="hl opt">:</span>
<span class="hl kwd">FenceTest</span><span class="hl opt">();</span>
<span class="hl kwc">protected</span><span class="hl opt">:</span>
<span class="hl kwb">int</span> <span class="hl kwd">init</span><span class="hl opt">()</span> override<span class="hl opt">;</span>
<span class="hl kwb">int</span> <span class="hl kwd">run</span><span class="hl opt">()</span> override<span class="hl opt">;</span>
<span class="hl kwc">private</span><span class="hl opt">:</span>
<span class="hl kwb">int</span> <span class="hl kwd">validateExpiredRequest</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">);</span>
<span class="hl kwb">int</span> <span class="hl kwd">validateRequest</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">);</span>
<span class="hl kwb">void</span> <span class="hl kwd">requestComplete</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">);</span>
<span class="hl kwb">void</span> <span class="hl kwd">requestRequeue</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">);</span>
<span class="hl kwb">void</span> <span class="hl kwd">signalFence</span><span class="hl opt">();</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Fence<span class="hl opt">></span> fence_<span class="hl opt">;</span>
EventDispatcher <span class="hl opt">*</span>dispatcher_<span class="hl opt">;</span>
UniqueFD eventFd_<span class="hl opt">;</span>
UniqueFD eventFd2_<span class="hl opt">;</span>
Timer fenceTimer_<span class="hl opt">;</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>vector<span class="hl opt"><</span><span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Request<span class="hl opt">>></span> requests_<span class="hl opt">;</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>CameraConfiguration<span class="hl opt">></span> config_<span class="hl opt">;</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>FrameBufferAllocator<span class="hl opt">></span> allocator_<span class="hl opt">;</span>
Stream <span class="hl opt">*</span>stream_<span class="hl opt">;</span>
<span class="hl kwb">bool</span> expectedCompletionResult_ <span class="hl opt">=</span> <span class="hl kwa">true</span><span class="hl opt">;</span>
<span class="hl kwb">bool</span> setFence_ <span class="hl opt">=</span> <span class="hl kwa">true</span><span class="hl opt">;</span>
<span class="hl kwb">unsigned int</span> completedRequest_<span class="hl opt">;</span>
<span class="hl kwb">unsigned int</span> signalledRequestId_<span class="hl opt">;</span>
<span class="hl kwb">unsigned int</span> expiredRequestId_<span class="hl opt">;</span>
<span class="hl kwb">unsigned int</span> nbuffers_<span class="hl opt">;</span>
<span class="hl kwb">int</span> efd2_<span class="hl opt">;</span>
<span class="hl kwb">int</span> efd_<span class="hl opt">;</span>
<span class="hl opt">};</span>
<span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">FenceTest</span><span class="hl opt">()</span>
<span class="hl opt">:</span> <span class="hl kwd">CameraTest</span><span class="hl opt">(</span><span class="hl str">"platform/vimc.0 Sensor B"</span><span class="hl opt">)</span>
<span class="hl opt">{</span>
<span class="hl opt">}</span>
<span class="hl kwb">int</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">init</span><span class="hl opt">()</span>
<span class="hl opt">{</span>
<span class="hl com">/* Make sure the CameraTest constructor succeeded. */</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>status_ <span class="hl opt">!=</span> TestPass<span class="hl opt">)</span>
<span class="hl kwa">return</span> status_<span class="hl opt">;</span>
dispatcher_ <span class="hl opt">=</span> <span class="hl kwc">Thread</span><span class="hl opt">::</span><span class="hl kwd">current</span><span class="hl opt">()-></span><span class="hl kwd">eventDispatcher</span><span class="hl opt">();</span>
<span class="hl com">/*</span>
<span class="hl com"> * Create two eventfds to model the fences. This is enough to support the</span>
<span class="hl com"> * needs of libcamera which only needs to wait for read events through</span>
<span class="hl com"> * poll(). Once native support for fences will be available in the</span>
<span class="hl com"> * backend kernel APIs this will need to be replaced by a sw_sync fence,</span>
<span class="hl com"> * but that requires debugfs.</span>
<span class="hl com"> */</span>
eventFd_ <span class="hl opt">=</span> <span class="hl kwd">UniqueFD</span><span class="hl opt">(</span><span class="hl kwd">eventfd</span><span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">,</span> EFD_CLOEXEC <span class="hl opt">|</span> EFD_NONBLOCK<span class="hl opt">));</span>
eventFd2_ <span class="hl opt">=</span> <span class="hl kwd">UniqueFD</span><span class="hl opt">(</span><span class="hl kwd">eventfd</span><span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">,</span> EFD_CLOEXEC <span class="hl opt">|</span> EFD_NONBLOCK<span class="hl opt">));</span>
<span class="hl kwa">if</span> <span class="hl opt">(!</span>eventFd_<span class="hl opt">.</span><span class="hl kwd">isValid</span><span class="hl opt">() || !</span>eventFd2_<span class="hl opt">.</span><span class="hl kwd">isValid</span><span class="hl opt">()) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Unable to create eventfd"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
efd_ <span class="hl opt">=</span> eventFd_<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">();</span>
efd2_ <span class="hl opt">=</span> eventFd2_<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">();</span>
config_ <span class="hl opt">=</span> camera_<span class="hl opt">-></span><span class="hl kwd">generateConfiguration</span><span class="hl opt">({</span> <span class="hl kwc">StreamRole</span><span class="hl opt">::</span>Viewfinder <span class="hl opt">});</span>
<span class="hl kwa">if</span> <span class="hl opt">(!</span>config_ <span class="hl opt">||</span> config_<span class="hl opt">-></span><span class="hl kwd">size</span><span class="hl opt">() !=</span> <span class="hl num">1</span><span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to generate default configuration"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>camera_<span class="hl opt">-></span><span class="hl kwd">acquire</span><span class="hl opt">()) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to acquire the camera"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>camera_<span class="hl opt">-></span><span class="hl kwd">configure</span><span class="hl opt">(</span>config_<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">())) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to set default configuration"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
StreamConfiguration <span class="hl opt">&</span>cfg <span class="hl opt">=</span> config_<span class="hl opt">-></span><span class="hl kwd">at</span><span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">);</span>
stream_ <span class="hl opt">=</span> cfg<span class="hl opt">.</span><span class="hl kwd">stream</span><span class="hl opt">();</span>
allocator_ <span class="hl opt">=</span> <span class="hl kwc">std</span><span class="hl opt">::</span>make_unique<span class="hl opt"><</span>FrameBufferAllocator<span class="hl opt">>(</span>camera_<span class="hl opt">);</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>allocator_<span class="hl opt">-></span><span class="hl kwd">allocate</span><span class="hl opt">(</span>stream_<span class="hl opt">) <</span> <span class="hl num">0</span><span class="hl opt">)</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
nbuffers_ <span class="hl opt">=</span> allocator_<span class="hl opt">-></span><span class="hl kwd">buffers</span><span class="hl opt">(</span>stream_<span class="hl opt">).</span><span class="hl kwd">size</span><span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>nbuffers_ <span class="hl opt"><</span> <span class="hl num">2</span><span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Not enough buffers available"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
signalledRequestId_ <span class="hl opt">=</span> nbuffers_ <span class="hl opt">-</span> <span class="hl num">2</span><span class="hl opt">;</span>
expiredRequestId_ <span class="hl opt">=</span> nbuffers_ <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl kwa">return</span> TestPass<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwb">int</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">validateExpiredRequest</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">)</span>
<span class="hl opt">{</span>
<span class="hl com">/* The last request is expected to fail. */</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>request<span class="hl opt">-></span><span class="hl kwd">status</span><span class="hl opt">() !=</span> <span class="hl kwc">Request</span><span class="hl opt">::</span>RequestCancelled<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"The last request should have failed: "</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
FrameBuffer <span class="hl opt">*</span>buffer <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">buffers</span><span class="hl opt">().</span><span class="hl kwd">begin</span><span class="hl opt">()-></span>second<span class="hl opt">;</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Fence<span class="hl opt">></span> fence <span class="hl opt">=</span> buffer<span class="hl opt">-></span><span class="hl kwd">releaseFence</span><span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(!</span>fence<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"The expired fence should be present"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">if</span> <span class="hl opt">(!</span>fence<span class="hl opt">-></span><span class="hl kwd">isValid</span><span class="hl opt">()) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"The expired fence should be valid"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
UniqueFD fd <span class="hl opt">=</span> fence<span class="hl opt">-></span><span class="hl kwd">release</span><span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>fd<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">() !=</span> efd_<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"The expired fence file descriptor should not change"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">return</span> TestPass<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwb">int</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">validateRequest</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">)</span>
<span class="hl opt">{</span>
<span class="hl kwb">uint64_t</span> cookie <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">cookie</span><span class="hl opt">();</span>
<span class="hl com">/* All requests but the last are expected to succeed. */</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>request<span class="hl opt">-></span><span class="hl kwd">status</span><span class="hl opt">() !=</span> <span class="hl kwc">Request</span><span class="hl opt">::</span>RequestComplete<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Unexpected request failure: "</span> <span class="hl opt"><<</span> cookie <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl com">/* A successfully completed request should have the Fence closed. */</span>
<span class="hl kwb">const</span> <span class="hl kwc">Request</span><span class="hl opt">::</span>BufferMap <span class="hl opt">&</span>buffers <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">buffers</span><span class="hl opt">();</span>
FrameBuffer <span class="hl opt">*</span>buffer <span class="hl opt">=</span> buffers<span class="hl opt">.</span><span class="hl kwd">begin</span><span class="hl opt">()-></span>second<span class="hl opt">;</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Fence<span class="hl opt">></span> bufferFence <span class="hl opt">=</span> buffer<span class="hl opt">-></span><span class="hl kwd">releaseFence</span><span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>bufferFence<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Unexpected valid fence in completed request"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">return</span> TestPass<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwb">void</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">requestRequeue</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">)</span>
<span class="hl opt">{</span>
<span class="hl kwb">const</span> <span class="hl kwc">Request</span><span class="hl opt">::</span>BufferMap <span class="hl opt">&</span>buffers <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">buffers</span><span class="hl opt">();</span>
<span class="hl kwb">const</span> Stream <span class="hl opt">*</span>stream <span class="hl opt">=</span> buffers<span class="hl opt">.</span><span class="hl kwd">begin</span><span class="hl opt">()-></span>first<span class="hl opt">;</span>
FrameBuffer <span class="hl opt">*</span>buffer <span class="hl opt">=</span> buffers<span class="hl opt">.</span><span class="hl kwd">begin</span><span class="hl opt">()-></span>second<span class="hl opt">;</span>
<span class="hl kwb">uint64_t</span> cookie <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">cookie</span><span class="hl opt">();</span>
request<span class="hl opt">-></span><span class="hl kwd">reuse</span><span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>cookie <span class="hl opt">==</span> signalledRequestId_ <span class="hl opt">&&</span> setFence_<span class="hl opt">) {</span>
<span class="hl com">/*</span>
<span class="hl com"> * The second time this request is queued add a fence to it.</span>
<span class="hl com"> *</span>
<span class="hl com"> * The main loop signals it by using a timer to write to the</span>
<span class="hl com"> * efd2_ file descriptor before the fence expires.</span>
<span class="hl com"> */</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Fence<span class="hl opt">></span> fence <span class="hl opt">=</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>make_unique<span class="hl opt"><</span>Fence<span class="hl opt">>(</span><span class="hl kwc">std</span><span class="hl opt">::</span><span class="hl kwd">move</span><span class="hl opt">(</span>eventFd2_<span class="hl opt">));</span>
request<span class="hl opt">-></span><span class="hl kwd">addBuffer</span><span class="hl opt">(</span>stream<span class="hl opt">,</span> buffer<span class="hl opt">,</span> <span class="hl kwc">std</span><span class="hl opt">::</span><span class="hl kwd">move</span><span class="hl opt">(</span>fence<span class="hl opt">));</span>
<span class="hl opt">}</span> <span class="hl kwa">else</span> <span class="hl opt">{</span>
<span class="hl com">/* All the other requests continue to operate without fences. */</span>
request<span class="hl opt">-></span><span class="hl kwd">addBuffer</span><span class="hl opt">(</span>stream<span class="hl opt">,</span> buffer<span class="hl opt">);</span>
<span class="hl opt">}</span>
camera_<span class="hl opt">-></span><span class="hl kwd">queueRequest</span><span class="hl opt">(</span>request<span class="hl opt">);</span>
<span class="hl opt">}</span>
<span class="hl kwb">void</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">requestComplete</span><span class="hl opt">(</span>Request <span class="hl opt">*</span>request<span class="hl opt">)</span>
<span class="hl opt">{</span>
<span class="hl kwb">uint64_t</span> cookie <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">cookie</span><span class="hl opt">();</span>
completedRequest_ <span class="hl opt">=</span> cookie<span class="hl opt">;</span>
<span class="hl com">/*</span>
<span class="hl com"> * The last request is expected to fail as its fence has not been</span>
<span class="hl com"> * signaled.</span>
<span class="hl com"> *</span>
<span class="hl com"> * Validate the fence status but do not re-queue it.</span>
<span class="hl com"> */</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>cookie <span class="hl opt">==</span> expiredRequestId_<span class="hl opt">) {</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">validateExpiredRequest</span><span class="hl opt">(</span>request<span class="hl opt">) !=</span> TestPass<span class="hl opt">)</span>
expectedCompletionResult_ <span class="hl opt">=</span> <span class="hl kwa">false</span><span class="hl opt">;</span>
dispatcher_<span class="hl opt">-></span><span class="hl kwd">interrupt</span><span class="hl opt">();</span>
<span class="hl kwa">return</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl com">/* Validate all requests but the last. */</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">validateRequest</span><span class="hl opt">(</span>request<span class="hl opt">) !=</span> TestPass<span class="hl opt">) {</span>
expectedCompletionResult_ <span class="hl opt">=</span> <span class="hl kwa">false</span><span class="hl opt">;</span>
dispatcher_<span class="hl opt">-></span><span class="hl kwd">interrupt</span><span class="hl opt">();</span>
<span class="hl kwa">return</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwd">requestRequeue</span><span class="hl opt">(</span>request<span class="hl opt">);</span>
<span class="hl com">/*</span>
<span class="hl com"> * Interrupt the dispatcher to return control to the main loop and</span>
<span class="hl com"> * activate the fenceTimer.</span>
<span class="hl com"> */</span>
dispatcher_<span class="hl opt">-></span><span class="hl kwd">interrupt</span><span class="hl opt">();</span>
<span class="hl opt">}</span>
<span class="hl com">/* Callback to signal a fence waiting on the eventfd file descriptor. */</span>
<span class="hl kwb">void</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">signalFence</span><span class="hl opt">()</span>
<span class="hl opt">{</span>
<span class="hl kwb">uint64_t</span> value <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl kwb">int</span> ret<span class="hl opt">;</span>
ret <span class="hl opt">=</span> <span class="hl kwd">write</span><span class="hl opt">(</span>efd2_<span class="hl opt">, &</span>value<span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>value<span class="hl opt">));</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>ret <span class="hl opt">!=</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>value<span class="hl opt">))</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to signal fence"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
setFence_ <span class="hl opt">=</span> <span class="hl kwa">false</span><span class="hl opt">;</span>
dispatcher_<span class="hl opt">-></span><span class="hl kwd">processEvents</span><span class="hl opt">();</span>
<span class="hl opt">}</span>
<span class="hl kwb">int</span> <span class="hl kwc">FenceTest</span><span class="hl opt">::</span><span class="hl kwd">run</span><span class="hl opt">()</span>
<span class="hl opt">{</span>
<span class="hl kwa">for</span> <span class="hl opt">(</span><span class="hl kwb">const</span> <span class="hl kwc">auto</span> <span class="hl opt">&[</span>i<span class="hl opt">,</span> buffer<span class="hl opt">] :</span> <span class="hl kwc">utils</span><span class="hl opt">::</span><span class="hl kwd">enumerate</span><span class="hl opt">(</span>allocator_<span class="hl opt">-></span><span class="hl kwd">buffers</span><span class="hl opt">(</span>stream_<span class="hl opt">))) {</span>
<span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Request<span class="hl opt">></span> request <span class="hl opt">=</span> camera_<span class="hl opt">-></span><span class="hl kwd">createRequest</span><span class="hl opt">(</span>i<span class="hl opt">);</span>
<span class="hl kwa">if</span> <span class="hl opt">(!</span>request<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to create request"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwb">int</span> ret<span class="hl opt">;</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>i <span class="hl opt">==</span> expiredRequestId_<span class="hl opt">) {</span>
<span class="hl com">/* This request will have a fence, and it will expire. */</span>
fence_ <span class="hl opt">=</span> <span class="hl kwc">std</span><span class="hl opt">::</span>make_unique<span class="hl opt"><</span>Fence<span class="hl opt">>(</span><span class="hl kwc">std</span><span class="hl opt">::</span><span class="hl kwd">move</span><span class="hl opt">(</span>eventFd_<span class="hl opt">));</span>
<span class="hl kwa">if</span> <span class="hl opt">(!</span>fence_<span class="hl opt">-></span><span class="hl kwd">isValid</span><span class="hl opt">()) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Fence should be valid"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
ret <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">addBuffer</span><span class="hl opt">(</span>stream_<span class="hl opt">,</span> buffer<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">(),</span> <span class="hl kwc">std</span><span class="hl opt">::</span><span class="hl kwd">move</span><span class="hl opt">(</span>fence_<span class="hl opt">));</span>
<span class="hl opt">}</span> <span class="hl kwa">else</span> <span class="hl opt">{</span>
<span class="hl com">/* All other requests will have no Fence. */</span>
ret <span class="hl opt">=</span> request<span class="hl opt">-></span><span class="hl kwd">addBuffer</span><span class="hl opt">(</span>stream_<span class="hl opt">,</span> buffer<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">());</span>
<span class="hl opt">}</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>ret<span class="hl opt">) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to associate buffer with request"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
requests_<span class="hl opt">.</span><span class="hl kwd">push_back</span><span class="hl opt">(</span><span class="hl kwc">std</span><span class="hl opt">::</span><span class="hl kwd">move</span><span class="hl opt">(</span>request<span class="hl opt">));</span>
<span class="hl opt">}</span>
camera_<span class="hl opt">-></span>requestCompleted<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &</span><span class="hl kwc">FenceTest</span><span class="hl opt">::</span>requestComplete<span class="hl opt">);</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>camera_<span class="hl opt">-></span><span class="hl kwd">start</span><span class="hl opt">()) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to start camera"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">for</span> <span class="hl opt">(</span><span class="hl kwc">std</span><span class="hl opt">::</span>unique_ptr<span class="hl opt"><</span>Request<span class="hl opt">> &</span>request <span class="hl opt">:</span> requests_<span class="hl opt">) {</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>camera_<span class="hl opt">-></span><span class="hl kwd">queueRequest</span><span class="hl opt">(</span>request<span class="hl opt">.</span><span class="hl kwd">get</span><span class="hl opt">())) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to queue request"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl opt">}</span>
expectedCompletionResult_ <span class="hl opt">=</span> <span class="hl kwa">true</span><span class="hl opt">;</span>
<span class="hl com">/* This timer serves to signal fences associated with "signalledRequestId_" */</span>
Timer fenceTimer<span class="hl opt">;</span>
fenceTimer<span class="hl opt">.</span>timeout<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &</span><span class="hl kwc">FenceTest</span><span class="hl opt">::</span>signalFence<span class="hl opt">);</span>
<span class="hl com">/* Loop for one second. */</span>
Timer timer<span class="hl opt">;</span>
timer<span class="hl opt">.</span><span class="hl kwd">start</span><span class="hl opt">(</span><span class="hl num">1000</span>ms<span class="hl opt">);</span>
<span class="hl kwa">while</span> <span class="hl opt">(</span>timer<span class="hl opt">.</span><span class="hl kwd">isRunning</span><span class="hl opt">() &&</span> expectedCompletionResult_<span class="hl opt">) {</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>completedRequest_ <span class="hl opt">==</span> signalledRequestId_ <span class="hl opt">&&</span> setFence_<span class="hl opt">)</span>
<span class="hl com">/*</span>
<span class="hl com"> * signalledRequestId_ has just completed and it has</span>
<span class="hl com"> * been re-queued with a fence. Start the timer to</span>
<span class="hl com"> * signal the fence in 10 msec.</span>
<span class="hl com"> */</span>
fenceTimer<span class="hl opt">.</span><span class="hl kwd">start</span><span class="hl opt">(</span><span class="hl num">10</span>ms<span class="hl opt">);</span>
dispatcher_<span class="hl opt">-></span><span class="hl kwd">processEvents</span><span class="hl opt">();</span>
<span class="hl opt">}</span>
camera_<span class="hl opt">-></span>requestCompleted<span class="hl opt">.</span><span class="hl kwd">disconnect</span><span class="hl opt">();</span>
<span class="hl kwa">if</span> <span class="hl opt">(</span>camera_<span class="hl opt">-></span><span class="hl kwd">stop</span><span class="hl opt">()) {</span>
cerr <span class="hl opt"><<</span> <span class="hl str">"Failed to stop camera"</span> <span class="hl opt"><<</span> endl<span class="hl opt">;</span>
<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwa">return</span> expectedCompletionResult_ <span class="hl opt">?</span> TestPass <span class="hl opt">:</span> TestFail<span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl kwd">TEST_REGISTER</span><span class="hl opt">(</span>FenceTest<span class="hl opt">)</span>
</code></pre></td></tr></table>
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