Google Git
Sign in
chromium / chromium / src / a825f90e8fdbd9e41bd2dcafffa88662fb50878f / . / media / gpu / v4l2_slice_video_decode_accelerator.cc
blob: 419ffe65aab2c888c34a6ba1fd0629529e476e79 [file] [log] [blame]
// Copyright 2015 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/gpu/v4l2_slice_video_decode_accelerator.h"
#include <errno.h>
#include <fcntl.h>
#include <linux/videodev2.h>
#include <poll.h>
#include <string.h>
#include <sys/eventfd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <memory>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/numerics/safe_conversions.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/stringprintf.h"
#include "media/base/bind_to_current_loop.h"
#include "media/base/media_switches.h"
#include "media/gpu/shared_memory_region.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/scoped_binders.h"
#define LOGF(level) LOG(level) << __FUNCTION__ << "(): "
#define DLOGF(level) DLOG(level) << __FUNCTION__ << "(): "
#define DVLOGF(level) DVLOG(level) << __FUNCTION__ << "(): "
#define PLOGF(level) PLOG(level) << __FUNCTION__ << "(): "
#define NOTIFY_ERROR(x) \
do { \
LOGF(ERROR) << "Setting error state:" << x; \
SetErrorState(x); \
} while (0)
#define IOCTL_OR_ERROR_RETURN_VALUE(type, arg, value, type_str) \
do { \
if (device_->Ioctl(type, arg) != 0) { \
PLOGF(ERROR) << "ioctl() failed: " << type_str; \
return value; \
} \
} while (0)
#define IOCTL_OR_ERROR_RETURN(type, arg) \
IOCTL_OR_ERROR_RETURN_VALUE(type, arg, ((void)0), #type)
#define IOCTL_OR_ERROR_RETURN_FALSE(type, arg) \
IOCTL_OR_ERROR_RETURN_VALUE(type, arg, false, #type)
#define IOCTL_OR_LOG_ERROR(type, arg) \
do { \
if (device_->Ioctl(type, arg) != 0) \
PLOGF(ERROR) << "ioctl() failed: " << #type; \
} while (0)
namespace media {
// static
const uint32_t V4L2SliceVideoDecodeAccelerator::supported_input_fourccs_[] = {
V4L2_PIX_FMT_H264_SLICE, V4L2_PIX_FMT_VP8_FRAME,
};
class V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface
: public base::RefCounted<V4L2DecodeSurface> {
public:
using ReleaseCB = base::Callback<void(int)>;
V4L2DecodeSurface(int32_t bitstream_id,
int input_record,
int output_record,
const ReleaseCB& release_cb);
// Mark the surface as decoded. This will also release all references, as
// they are not needed anymore.
void SetDecoded();
bool decoded() const { return decoded_; }
int32_t bitstream_id() const { return bitstream_id_; }
int input_record() const { return input_record_; }
int output_record() const { return output_record_; }
uint32_t config_store() const { return config_store_; }
// Take references to each reference surface and keep them until the
// target surface is decoded.
void SetReferenceSurfaces(
const std::vector<scoped_refptr<V4L2DecodeSurface>>& ref_surfaces);
std::string ToString() const;
private:
friend class base::RefCounted<V4L2DecodeSurface>;
~V4L2DecodeSurface();
int32_t bitstream_id_;
int input_record_;
int output_record_;
uint32_t config_store_;
bool decoded_;
ReleaseCB release_cb_;
std::vector<scoped_refptr<V4L2DecodeSurface>> reference_surfaces_;
DISALLOW_COPY_AND_ASSIGN(V4L2DecodeSurface);
};
V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface::V4L2DecodeSurface(
int32_t bitstream_id,
int input_record,
int output_record,
const ReleaseCB& release_cb)
: bitstream_id_(bitstream_id),
input_record_(input_record),
output_record_(output_record),
config_store_(input_record + 1),
decoded_(false),
release_cb_(release_cb) {}
V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface::~V4L2DecodeSurface() {
DVLOGF(5) << "Releasing output record id=" << output_record_;
release_cb_.Run(output_record_);
}
void V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface::SetReferenceSurfaces(
const std::vector<scoped_refptr<V4L2DecodeSurface>>& ref_surfaces) {
DCHECK(reference_surfaces_.empty());
reference_surfaces_ = ref_surfaces;
}
void V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface::SetDecoded() {
DCHECK(!decoded_);
decoded_ = true;
// We can now drop references to all reference surfaces for this surface
// as we are done with decoding.
reference_surfaces_.clear();
}
std::string V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface::ToString()
const {
std::string out;
base::StringAppendF(&out, "Buffer %d -> %d. ", input_record_, output_record_);
base::StringAppendF(&out, "Reference surfaces:");
for (const auto& ref : reference_surfaces_) {
DCHECK_NE(ref->output_record(), output_record_);
base::StringAppendF(&out, " %d", ref->output_record());
}
return out;
}
V4L2SliceVideoDecodeAccelerator::InputRecord::InputRecord()
: input_id(-1),
address(nullptr),
length(0),
bytes_used(0),
at_device(false) {}
V4L2SliceVideoDecodeAccelerator::OutputRecord::OutputRecord()
: at_device(false),
at_client(false),
picture_id(-1),
texture_id(0),
egl_image(EGL_NO_IMAGE_KHR),
egl_sync(EGL_NO_SYNC_KHR),
cleared(false) {}
struct V4L2SliceVideoDecodeAccelerator::BitstreamBufferRef {
BitstreamBufferRef(
base::WeakPtr<VideoDecodeAccelerator::Client>& client,
const scoped_refptr<base::SingleThreadTaskRunner>& client_task_runner,
SharedMemoryRegion* shm,
int32_t input_id);
~BitstreamBufferRef();
const base::WeakPtr<VideoDecodeAccelerator::Client> client;
const scoped_refptr<base::SingleThreadTaskRunner> client_task_runner;
const std::unique_ptr<SharedMemoryRegion> shm;
off_t bytes_used;
const int32_t input_id;
};
V4L2SliceVideoDecodeAccelerator::BitstreamBufferRef::BitstreamBufferRef(
base::WeakPtr<VideoDecodeAccelerator::Client>& client,
const scoped_refptr<base::SingleThreadTaskRunner>& client_task_runner,
SharedMemoryRegion* shm,
int32_t input_id)
: client(client),
client_task_runner(client_task_runner),
shm(shm),
bytes_used(0),
input_id(input_id) {}
V4L2SliceVideoDecodeAccelerator::BitstreamBufferRef::~BitstreamBufferRef() {
if (input_id >= 0) {
DVLOGF(5) << "returning input_id: " << input_id;
client_task_runner->PostTask(
FROM_HERE,
base::Bind(&VideoDecodeAccelerator::Client::NotifyEndOfBitstreamBuffer,
client, input_id));
}
}
struct V4L2SliceVideoDecodeAccelerator::EGLSyncKHRRef {
EGLSyncKHRRef(EGLDisplay egl_display, EGLSyncKHR egl_sync);
~EGLSyncKHRRef();
EGLDisplay const egl_display;
EGLSyncKHR egl_sync;
};
V4L2SliceVideoDecodeAccelerator::EGLSyncKHRRef::EGLSyncKHRRef(
EGLDisplay egl_display,
EGLSyncKHR egl_sync)
: egl_display(egl_display), egl_sync(egl_sync) {}
V4L2SliceVideoDecodeAccelerator::EGLSyncKHRRef::~EGLSyncKHRRef() {
// We don't check for eglDestroySyncKHR failures, because if we get here
// with a valid sync object, something went wrong and we are getting
// destroyed anyway.
if (egl_sync != EGL_NO_SYNC_KHR)
eglDestroySyncKHR(egl_display, egl_sync);
}
struct V4L2SliceVideoDecodeAccelerator::PictureRecord {
PictureRecord(bool cleared, const Picture& picture);
~PictureRecord();
bool cleared; // Whether the texture is cleared and safe to render from.
Picture picture; // The decoded picture.
};
V4L2SliceVideoDecodeAccelerator::PictureRecord::PictureRecord(
bool cleared,
const Picture& picture)
: cleared(cleared), picture(picture) {}
V4L2SliceVideoDecodeAccelerator::PictureRecord::~PictureRecord() {}
class V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator
: public H264Decoder::H264Accelerator {
public:
V4L2H264Accelerator(V4L2SliceVideoDecodeAccelerator* v4l2_dec);
~V4L2H264Accelerator() override;
// H264Decoder::H264Accelerator implementation.
scoped_refptr<H264Picture> CreateH264Picture() override;
bool SubmitFrameMetadata(const H264SPS* sps,
const H264PPS* pps,
const H264DPB& dpb,
const H264Picture::Vector& ref_pic_listp0,
const H264Picture::Vector& ref_pic_listb0,
const H264Picture::Vector& ref_pic_listb1,
const scoped_refptr<H264Picture>& pic) override;
bool SubmitSlice(const H264PPS* pps,
const H264SliceHeader* slice_hdr,
const H264Picture::Vector& ref_pic_list0,
const H264Picture::Vector& ref_pic_list1,
const scoped_refptr<H264Picture>& pic,
const uint8_t* data,
size_t size) override;
bool SubmitDecode(const scoped_refptr<H264Picture>& pic) override;
bool OutputPicture(const scoped_refptr<H264Picture>& pic) override;
void Reset() override;
private:
// Max size of reference list.
static const size_t kDPBIndicesListSize = 32;
void H264PictureListToDPBIndicesList(const H264Picture::Vector& src_pic_list,
uint8_t dst_list[kDPBIndicesListSize]);
void H264DPBToV4L2DPB(
const H264DPB& dpb,
std::vector<scoped_refptr<V4L2DecodeSurface>>* ref_surfaces);
scoped_refptr<V4L2DecodeSurface> H264PictureToV4L2DecodeSurface(
const scoped_refptr<H264Picture>& pic);
size_t num_slices_;
V4L2SliceVideoDecodeAccelerator* v4l2_dec_;
// TODO(posciak): This should be queried from hardware once supported.
static const size_t kMaxSlices = 16;
struct v4l2_ctrl_h264_slice_param v4l2_slice_params_[kMaxSlices];
struct v4l2_ctrl_h264_decode_param v4l2_decode_param_;
DISALLOW_COPY_AND_ASSIGN(V4L2H264Accelerator);
};
class V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator
: public VP8Decoder::VP8Accelerator {
public:
V4L2VP8Accelerator(V4L2SliceVideoDecodeAccelerator* v4l2_dec);
~V4L2VP8Accelerator() override;
// VP8Decoder::VP8Accelerator implementation.
scoped_refptr<VP8Picture> CreateVP8Picture() override;
bool SubmitDecode(const scoped_refptr<VP8Picture>& pic,
const Vp8FrameHeader* frame_hdr,
const scoped_refptr<VP8Picture>& last_frame,
const scoped_refptr<VP8Picture>& golden_frame,
const scoped_refptr<VP8Picture>& alt_frame) override;
bool OutputPicture(const scoped_refptr<VP8Picture>& pic) override;
private:
scoped_refptr<V4L2DecodeSurface> VP8PictureToV4L2DecodeSurface(
const scoped_refptr<VP8Picture>& pic);
V4L2SliceVideoDecodeAccelerator* v4l2_dec_;
DISALLOW_COPY_AND_ASSIGN(V4L2VP8Accelerator);
};
// Codec-specific subclasses of software decoder picture classes.
// This allows us to keep decoders oblivious of our implementation details.
class V4L2H264Picture : public H264Picture {
public:
V4L2H264Picture(
const scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>&
dec_surface);
V4L2H264Picture* AsV4L2H264Picture() override { return this; }
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
dec_surface() {
return dec_surface_;
}
private:
~V4L2H264Picture() override;
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
dec_surface_;
DISALLOW_COPY_AND_ASSIGN(V4L2H264Picture);
};
V4L2H264Picture::V4L2H264Picture(
const scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>&
dec_surface)
: dec_surface_(dec_surface) {}
V4L2H264Picture::~V4L2H264Picture() {}
class V4L2VP8Picture : public VP8Picture {
public:
V4L2VP8Picture(
const scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>&
dec_surface);
V4L2VP8Picture* AsV4L2VP8Picture() override { return this; }
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
dec_surface() {
return dec_surface_;
}
private:
~V4L2VP8Picture() override;
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
dec_surface_;
DISALLOW_COPY_AND_ASSIGN(V4L2VP8Picture);
};
V4L2VP8Picture::V4L2VP8Picture(
const scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>&
dec_surface)
: dec_surface_(dec_surface) {}
V4L2VP8Picture::~V4L2VP8Picture() {}
V4L2SliceVideoDecodeAccelerator::V4L2SliceVideoDecodeAccelerator(
const scoped_refptr<V4L2Device>& device,
EGLDisplay egl_display,
const GetGLContextCallback& get_gl_context_cb,
const MakeGLContextCurrentCallback& make_context_current_cb)
: input_planes_count_(0),
output_planes_count_(0),
child_task_runner_(base::ThreadTaskRunnerHandle::Get()),
device_(device),
decoder_thread_("V4L2SliceVideoDecodeAcceleratorThread"),
device_poll_thread_("V4L2SliceVideoDecodeAcceleratorDevicePollThread"),
input_streamon_(false),
input_buffer_queued_count_(0),
output_streamon_(false),
output_buffer_queued_count_(0),
video_profile_(VIDEO_CODEC_PROFILE_UNKNOWN),
output_format_fourcc_(0),
state_(kUninitialized),
output_mode_(Config::OutputMode::ALLOCATE),
decoder_flushing_(false),
decoder_resetting_(false),
surface_set_change_pending_(false),
picture_clearing_count_(0),
egl_display_(egl_display),
get_gl_context_cb_(get_gl_context_cb),
make_context_current_cb_(make_context_current_cb),
weak_this_factory_(this) {
weak_this_ = weak_this_factory_.GetWeakPtr();
}
V4L2SliceVideoDecodeAccelerator::~V4L2SliceVideoDecodeAccelerator() {
DVLOGF(2);
DCHECK(child_task_runner_->BelongsToCurrentThread());
DCHECK(!decoder_thread_.IsRunning());
DCHECK(!device_poll_thread_.IsRunning());
DCHECK(input_buffer_map_.empty());
DCHECK(output_buffer_map_.empty());
}
void V4L2SliceVideoDecodeAccelerator::NotifyError(Error error) {
if (!child_task_runner_->BelongsToCurrentThread()) {
child_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::NotifyError,
weak_this_, error));
return;
}
if (client_) {
client_->NotifyError(error);
client_ptr_factory_.reset();
}
}
bool V4L2SliceVideoDecodeAccelerator::Initialize(const Config& config,
Client* client) {
DVLOGF(3) << "profile: " << config.profile;
DCHECK(child_task_runner_->BelongsToCurrentThread());
DCHECK_EQ(state_, kUninitialized);
if (!device_->SupportsDecodeProfileForV4L2PixelFormats(
config.profile, arraysize(supported_input_fourccs_),
supported_input_fourccs_)) {
DVLOGF(1) << "unsupported profile " << config.profile;
return false;
}
if (config.is_encrypted) {
NOTREACHED() << "Encrypted streams are not supported for this VDA";
return false;
}
if (config.output_mode != Config::OutputMode::ALLOCATE &&
config.output_mode != Config::OutputMode::IMPORT) {
NOTREACHED() << "Only ALLOCATE and IMPORT OutputModes are supported";
return false;
}
client_ptr_factory_.reset(
new base::WeakPtrFactory<VideoDecodeAccelerator::Client>(client));
client_ = client_ptr_factory_->GetWeakPtr();
// If we haven't been set up to decode on separate thread via
// TryToSetupDecodeOnSeparateThread(), use the main thread/client for
// decode tasks.
if (!decode_task_runner_) {
decode_task_runner_ = child_task_runner_;
DCHECK(!decode_client_);
decode_client_ = client_;
}
video_profile_ = config.profile;
if (video_profile_ >= H264PROFILE_MIN && video_profile_ <= H264PROFILE_MAX) {
h264_accelerator_.reset(new V4L2H264Accelerator(this));
decoder_.reset(new H264Decoder(h264_accelerator_.get()));
} else if (video_profile_ >= VP8PROFILE_MIN &&
video_profile_ <= VP8PROFILE_MAX) {
vp8_accelerator_.reset(new V4L2VP8Accelerator(this));
decoder_.reset(new VP8Decoder(vp8_accelerator_.get()));
} else {
NOTREACHED() << "Unsupported profile " << video_profile_;
return false;
}
// TODO(posciak): This needs to be queried once supported.
input_planes_count_ = 1;
output_planes_count_ = 1;
if (egl_display_ == EGL_NO_DISPLAY) {
LOGF(ERROR) << "could not get EGLDisplay";
return false;
}
// We need the context to be initialized to query extensions.
if (!make_context_current_cb_.is_null()) {
if (!make_context_current_cb_.Run()) {
LOGF(ERROR) << "could not make context current";
return false;
}
if (!gl::g_driver_egl.ext.b_EGL_KHR_fence_sync) {
LOGF(ERROR) << "context does not have EGL_KHR_fence_sync";
return false;
}
} else {
DVLOGF(1) << "No GL callbacks provided, initializing without GL support";
}
// Capabilities check.
struct v4l2_capability caps;
const __u32 kCapsRequired = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_QUERYCAP, &caps);
if ((caps.capabilities & kCapsRequired) != kCapsRequired) {
LOGF(ERROR) << "ioctl() failed: VIDIOC_QUERYCAP"
<< ", caps check failed: 0x" << std::hex << caps.capabilities;
return false;
}
if (!SetupFormats())
return false;
if (!decoder_thread_.Start()) {
DLOGF(ERROR) << "device thread failed to start";
return false;
}
decoder_thread_task_runner_ = decoder_thread_.task_runner();
state_ = kInitialized;
output_mode_ = config.output_mode;
// InitializeTask will NOTIFY_ERROR on failure.
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::InitializeTask,
base::Unretained(this)));
DVLOGF(1) << "V4L2SliceVideoDecodeAccelerator initialized";
return true;
}
void V4L2SliceVideoDecodeAccelerator::InitializeTask() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_EQ(state_, kInitialized);
if (!CreateInputBuffers())
NOTIFY_ERROR(PLATFORM_FAILURE);
// Output buffers will be created once decoder gives us information
// about their size and required count.
state_ = kDecoding;
}
void V4L2SliceVideoDecodeAccelerator::Destroy() {
DVLOGF(3);
DCHECK(child_task_runner_->BelongsToCurrentThread());
if (decoder_thread_.IsRunning()) {
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::DestroyTask,
base::Unretained(this)));
// Wait for tasks to finish/early-exit.
decoder_thread_.Stop();
}
delete this;
DVLOGF(3) << "Destroyed";
}
void V4L2SliceVideoDecodeAccelerator::DestroyTask() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
state_ = kError;
decoder_->Reset();
decoder_current_bitstream_buffer_.reset();
while (!decoder_input_queue_.empty())
decoder_input_queue_.pop();
// Stop streaming and the device_poll_thread_.
StopDevicePoll(false);
DestroyInputBuffers();
DestroyOutputs(false);
DCHECK(surfaces_at_device_.empty());
DCHECK(surfaces_at_display_.empty());
DCHECK(decoder_display_queue_.empty());
}
bool V4L2SliceVideoDecodeAccelerator::SetupFormats() {
DCHECK_EQ(state_, kUninitialized);
__u32 input_format_fourcc =
V4L2Device::VideoCodecProfileToV4L2PixFmt(video_profile_, true);
if (!input_format_fourcc) {
NOTREACHED();
return false;
}
size_t input_size;
gfx::Size max_resolution, min_resolution;
device_->GetSupportedResolution(input_format_fourcc, &min_resolution,
&max_resolution);
if (max_resolution.width() > 1920 && max_resolution.height() > 1088)
input_size = kInputBufferMaxSizeFor4k;
else
input_size = kInputBufferMaxSizeFor1080p;
struct v4l2_fmtdesc fmtdesc;
memset(&fmtdesc, 0, sizeof(fmtdesc));
fmtdesc.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
bool is_format_supported = false;
while (device_->Ioctl(VIDIOC_ENUM_FMT, &fmtdesc) == 0) {
if (fmtdesc.pixelformat == input_format_fourcc) {
is_format_supported = true;
break;
}
++fmtdesc.index;
}
if (!is_format_supported) {
DVLOGF(1) << "Input fourcc " << input_format_fourcc
<< " not supported by device.";
return false;
}
struct v4l2_format format;
memset(&format, 0, sizeof(format));
format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
format.fmt.pix_mp.pixelformat = input_format_fourcc;
format.fmt.pix_mp.plane_fmt[0].sizeimage = input_size;
format.fmt.pix_mp.num_planes = input_planes_count_;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_S_FMT, &format);
// We have to set up the format for output, because the driver may not allow
// changing it once we start streaming; whether it can support our chosen
// output format or not may depend on the input format.
memset(&fmtdesc, 0, sizeof(fmtdesc));
fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
output_format_fourcc_ = 0;
while (device_->Ioctl(VIDIOC_ENUM_FMT, &fmtdesc) == 0) {
if (device_->CanCreateEGLImageFrom(fmtdesc.pixelformat)) {
output_format_fourcc_ = fmtdesc.pixelformat;
break;
}
++fmtdesc.index;
}
if (output_format_fourcc_ == 0) {
LOGF(ERROR) << "Could not find a usable output format";
return false;
}
// Only set fourcc for output; resolution, etc., will come from the
// driver once it extracts it from the stream.
memset(&format, 0, sizeof(format));
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
format.fmt.pix_mp.pixelformat = output_format_fourcc_;
format.fmt.pix_mp.num_planes = output_planes_count_;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_S_FMT, &format);
return true;
}
bool V4L2SliceVideoDecodeAccelerator::CreateInputBuffers() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK(!input_streamon_);
DCHECK(input_buffer_map_.empty());
struct v4l2_requestbuffers reqbufs;
memset(&reqbufs, 0, sizeof(reqbufs));
reqbufs.count = kNumInputBuffers;
reqbufs.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
reqbufs.memory = V4L2_MEMORY_MMAP;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_REQBUFS, &reqbufs);
if (reqbufs.count < kNumInputBuffers) {
PLOGF(ERROR) << "Could not allocate enough output buffers";
return false;
}
input_buffer_map_.resize(reqbufs.count);
for (size_t i = 0; i < input_buffer_map_.size(); ++i) {
free_input_buffers_.push_back(i);
// Query for the MEMORY_MMAP pointer.
struct v4l2_plane planes[VIDEO_MAX_PLANES];
struct v4l2_buffer buffer;
memset(&buffer, 0, sizeof(buffer));
memset(planes, 0, sizeof(planes));
buffer.index = i;
buffer.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
buffer.memory = V4L2_MEMORY_MMAP;
buffer.m.planes = planes;
buffer.length = input_planes_count_;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_QUERYBUF, &buffer);
void* address = device_->Mmap(nullptr,
buffer.m.planes[0].length,
PROT_READ | PROT_WRITE,
MAP_SHARED,
buffer.m.planes[0].m.mem_offset);
if (address == MAP_FAILED) {
PLOGF(ERROR) << "mmap() failed";
return false;
}
input_buffer_map_[i].address = address;
input_buffer_map_[i].length = buffer.m.planes[0].length;
}
return true;
}
bool V4L2SliceVideoDecodeAccelerator::CreateOutputBuffers() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK(!output_streamon_);
DCHECK(output_buffer_map_.empty());
DCHECK(surfaces_at_display_.empty());
DCHECK(surfaces_at_device_.empty());
visible_size_ = decoder_->GetPicSize();
size_t num_pictures = decoder_->GetRequiredNumOfPictures();
DCHECK_GT(num_pictures, 0u);
DCHECK(!visible_size_.IsEmpty());
struct v4l2_format format;
memset(&format, 0, sizeof(format));
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
format.fmt.pix_mp.pixelformat = output_format_fourcc_;
format.fmt.pix_mp.width = visible_size_.width();
format.fmt.pix_mp.height = visible_size_.height();
format.fmt.pix_mp.num_planes = input_planes_count_;
if (device_->Ioctl(VIDIOC_S_FMT, &format) != 0) {
PLOGF(ERROR) << "Failed setting format to: " << output_format_fourcc_;
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
coded_size_.SetSize(base::checked_cast<int>(format.fmt.pix_mp.width),
base::checked_cast<int>(format.fmt.pix_mp.height));
DCHECK_EQ(coded_size_.width() % 16, 0);
DCHECK_EQ(coded_size_.height() % 16, 0);
if (!gfx::Rect(coded_size_).Contains(gfx::Rect(visible_size_))) {
LOGF(ERROR) << "Got invalid adjusted coded size: "
<< coded_size_.ToString();
return false;
}
DVLOGF(3) << "buffer_count=" << num_pictures
<< ", visible size=" << visible_size_.ToString()
<< ", coded size=" << coded_size_.ToString();
// With ALLOCATE mode the client can sample it as RGB and doesn't need to
// know the precise format.
VideoPixelFormat pixel_format =
(output_mode_ == Config::OutputMode::IMPORT)
? V4L2Device::V4L2PixFmtToVideoPixelFormat(output_format_fourcc_)
: PIXEL_FORMAT_UNKNOWN;
child_task_runner_->PostTask(
FROM_HERE,
base::Bind(&VideoDecodeAccelerator::Client::ProvidePictureBuffers,
client_, num_pictures, pixel_format, 1, coded_size_,
device_->GetTextureTarget()));
// Go into kAwaitingPictureBuffers to prevent us from doing any more decoding
// or event handling while we are waiting for AssignPictureBuffers(). Not
// having Pictures available would not have prevented us from making decoding
// progress entirely e.g. in the case of H.264 where we could further decode
// non-slice NALUs and could even get another resolution change before we were
// done with this one. After we get the buffers, we'll go back into kIdle and
// kick off further event processing, and eventually go back into kDecoding
// once no more events are pending (if any).
state_ = kAwaitingPictureBuffers;
return true;
}
void V4L2SliceVideoDecodeAccelerator::DestroyInputBuffers() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread() ||
!decoder_thread_.IsRunning());
DCHECK(!input_streamon_);
for (auto& input_record : input_buffer_map_) {
if (input_record.address != nullptr)
device_->Munmap(input_record.address, input_record.length);
}
struct v4l2_requestbuffers reqbufs;
memset(&reqbufs, 0, sizeof(reqbufs));
reqbufs.count = 0;
reqbufs.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
reqbufs.memory = V4L2_MEMORY_MMAP;
IOCTL_OR_LOG_ERROR(VIDIOC_REQBUFS, &reqbufs);
input_buffer_map_.clear();
free_input_buffers_.clear();
}
void V4L2SliceVideoDecodeAccelerator::DismissPictures(
const std::vector<int32_t>& picture_buffer_ids,
base::WaitableEvent* done) {
DVLOGF(3);
DCHECK(child_task_runner_->BelongsToCurrentThread());
for (auto picture_buffer_id : picture_buffer_ids) {
DVLOGF(1) << "dismissing PictureBuffer id=" << picture_buffer_id;
client_->DismissPictureBuffer(picture_buffer_id);
}
done->Signal();
}
void V4L2SliceVideoDecodeAccelerator::DevicePollTask(bool poll_device) {
DVLOGF(4);
DCHECK(device_poll_thread_.task_runner()->BelongsToCurrentThread());
bool event_pending;
if (!device_->Poll(poll_device, &event_pending)) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
// All processing should happen on ServiceDeviceTask(), since we shouldn't
// touch encoder state from this thread.
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::ServiceDeviceTask,
base::Unretained(this)));
}
void V4L2SliceVideoDecodeAccelerator::ServiceDeviceTask() {
DVLOGF(4);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
// ServiceDeviceTask() should only ever be scheduled from DevicePollTask().
Dequeue();
SchedulePollIfNeeded();
}
void V4L2SliceVideoDecodeAccelerator::SchedulePollIfNeeded() {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (!device_poll_thread_.IsRunning()) {
DVLOGF(2) << "Device poll thread stopped, will not schedule poll";
return;
}
DCHECK(input_streamon_ || output_streamon_);
if (input_buffer_queued_count_ + output_buffer_queued_count_ == 0) {
DVLOGF(4) << "No buffers queued, will not schedule poll";
return;
}
DVLOGF(4) << "Scheduling device poll task";
device_poll_thread_.message_loop()->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::DevicePollTask,
base::Unretained(this), true));
DVLOGF(2) << "buffer counts: "
<< "INPUT[" << decoder_input_queue_.size() << "]"
<< " => DEVICE["
<< free_input_buffers_.size() << "+"
<< input_buffer_queued_count_ << "/"
<< input_buffer_map_.size() << "]->["
<< free_output_buffers_.size() << "+"
<< output_buffer_queued_count_ << "/"
<< output_buffer_map_.size() << "]"
<< " => DISPLAYQ[" << decoder_display_queue_.size() << "]"
<< " => CLIENT[" << surfaces_at_display_.size() << "]";
}
void V4L2SliceVideoDecodeAccelerator::Enqueue(
const scoped_refptr<V4L2DecodeSurface>& dec_surface) {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
const int old_inputs_queued = input_buffer_queued_count_;
const int old_outputs_queued = output_buffer_queued_count_;
if (!EnqueueInputRecord(dec_surface->input_record(),
dec_surface->config_store())) {
DVLOGF(1) << "Failed queueing an input buffer";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
if (!EnqueueOutputRecord(dec_surface->output_record())) {
DVLOGF(1) << "Failed queueing an output buffer";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
bool inserted =
surfaces_at_device_
.insert(std::make_pair(dec_surface->output_record(), dec_surface))
.second;
DCHECK(inserted);
if (old_inputs_queued == 0 && old_outputs_queued == 0)
SchedulePollIfNeeded();
}
void V4L2SliceVideoDecodeAccelerator::Dequeue() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
struct v4l2_buffer dqbuf;
struct v4l2_plane planes[VIDEO_MAX_PLANES];
while (input_buffer_queued_count_ > 0) {
DCHECK(input_streamon_);
memset(&dqbuf, 0, sizeof(dqbuf));
memset(&planes, 0, sizeof(planes));
dqbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
dqbuf.memory = V4L2_MEMORY_MMAP;
dqbuf.m.planes = planes;
dqbuf.length = input_planes_count_;
if (device_->Ioctl(VIDIOC_DQBUF, &dqbuf) != 0) {
if (errno == EAGAIN) {
// EAGAIN if we're just out of buffers to dequeue.
break;
}
PLOGF(ERROR) << "ioctl() failed: VIDIOC_DQBUF";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
InputRecord& input_record = input_buffer_map_[dqbuf.index];
DCHECK(input_record.at_device);
input_record.at_device = false;
ReuseInputBuffer(dqbuf.index);
input_buffer_queued_count_--;
DVLOGF(4) << "Dequeued input=" << dqbuf.index
<< " count: " << input_buffer_queued_count_;
}
while (output_buffer_queued_count_ > 0) {
DCHECK(output_streamon_);
memset(&dqbuf, 0, sizeof(dqbuf));
memset(&planes, 0, sizeof(planes));
dqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dqbuf.memory =
(output_mode_ == Config::OutputMode::ALLOCATE ? V4L2_MEMORY_MMAP
: V4L2_MEMORY_DMABUF);
dqbuf.m.planes = planes;
dqbuf.length = output_planes_count_;
if (device_->Ioctl(VIDIOC_DQBUF, &dqbuf) != 0) {
if (errno == EAGAIN) {
// EAGAIN if we're just out of buffers to dequeue.
break;
}
PLOGF(ERROR) << "ioctl() failed: VIDIOC_DQBUF";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
OutputRecord& output_record = output_buffer_map_[dqbuf.index];
DCHECK(output_record.at_device);
output_record.at_device = false;
output_buffer_queued_count_--;
DVLOGF(3) << "Dequeued output=" << dqbuf.index
<< " count " << output_buffer_queued_count_;
V4L2DecodeSurfaceByOutputId::iterator it =
surfaces_at_device_.find(dqbuf.index);
if (it == surfaces_at_device_.end()) {
DLOGF(ERROR) << "Got invalid surface from device.";
NOTIFY_ERROR(PLATFORM_FAILURE);
}
it->second->SetDecoded();
surfaces_at_device_.erase(it);
}
// A frame was decoded, see if we can output it.
TryOutputSurfaces();
ProcessPendingEventsIfNeeded();
}
void V4L2SliceVideoDecodeAccelerator::NewEventPending() {
// Switch to event processing mode if we are decoding. Otherwise we are either
// already in it, or we will potentially switch to it later, after finishing
// other tasks.
if (state_ == kDecoding)
state_ = kIdle;
ProcessPendingEventsIfNeeded();
}
bool V4L2SliceVideoDecodeAccelerator::FinishEventProcessing() {
DCHECK_EQ(state_, kIdle);
state_ = kDecoding;
ScheduleDecodeBufferTaskIfNeeded();
return true;
}
void V4L2SliceVideoDecodeAccelerator::ProcessPendingEventsIfNeeded() {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
// Process pending events, if any, in the correct order.
// We always first process the surface set change, as it is an internal
// event from the decoder and interleaving it with external requests would
// put the decoder in an undefined state.
using ProcessFunc = bool (V4L2SliceVideoDecodeAccelerator::*)();
const ProcessFunc process_functions[] = {
&V4L2SliceVideoDecodeAccelerator::FinishSurfaceSetChange,
&V4L2SliceVideoDecodeAccelerator::FinishFlush,
&V4L2SliceVideoDecodeAccelerator::FinishReset,
&V4L2SliceVideoDecodeAccelerator::FinishEventProcessing,
};
for (const auto& fn : process_functions) {
if (state_ != kIdle)
return;
if (!(this->*fn)())
return;
}
}
void V4L2SliceVideoDecodeAccelerator::ReuseInputBuffer(int index) {
DVLOGF(4) << "Reusing input buffer, index=" << index;
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_LT(index, static_cast<int>(input_buffer_map_.size()));
InputRecord& input_record = input_buffer_map_[index];
DCHECK(!input_record.at_device);
input_record.input_id = -1;
input_record.bytes_used = 0;
DCHECK_EQ(
std::count(free_input_buffers_.begin(), free_input_buffers_.end(), index),
0);
free_input_buffers_.push_back(index);
}
void V4L2SliceVideoDecodeAccelerator::ReuseOutputBuffer(int index) {
DVLOGF(4) << "Reusing output buffer, index=" << index;
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_LT(index, static_cast<int>(output_buffer_map_.size()));
OutputRecord& output_record = output_buffer_map_[index];
DCHECK(!output_record.at_device);
DCHECK(!output_record.at_client);
DCHECK_EQ(std::count(free_output_buffers_.begin(), free_output_buffers_.end(),
index),
0);
free_output_buffers_.push_back(index);
ScheduleDecodeBufferTaskIfNeeded();
}
bool V4L2SliceVideoDecodeAccelerator::EnqueueInputRecord(
int index,
uint32_t config_store) {
DVLOGF(3);
DCHECK_LT(index, static_cast<int>(input_buffer_map_.size()));
DCHECK_GT(config_store, 0u);
// Enqueue an input (VIDEO_OUTPUT) buffer for an input video frame.
InputRecord& input_record = input_buffer_map_[index];
DCHECK(!input_record.at_device);
struct v4l2_buffer qbuf;
struct v4l2_plane qbuf_planes[VIDEO_MAX_PLANES];
memset(&qbuf, 0, sizeof(qbuf));
memset(qbuf_planes, 0, sizeof(qbuf_planes));
qbuf.index = index;
qbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
qbuf.memory = V4L2_MEMORY_MMAP;
qbuf.m.planes = qbuf_planes;
qbuf.m.planes[0].bytesused = input_record.bytes_used;
qbuf.length = input_planes_count_;
qbuf.config_store = config_store;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_QBUF, &qbuf);
input_record.at_device = true;
input_buffer_queued_count_++;
DVLOGF(4) << "Enqueued input=" << qbuf.index
<< " count: " << input_buffer_queued_count_;
return true;
}
bool V4L2SliceVideoDecodeAccelerator::EnqueueOutputRecord(int index) {
DVLOGF(3);
DCHECK_LT(index, static_cast<int>(output_buffer_map_.size()));
// Enqueue an output (VIDEO_CAPTURE) buffer.
OutputRecord& output_record = output_buffer_map_[index];
DCHECK(!output_record.at_device);
DCHECK(!output_record.at_client);
DCHECK_NE(output_record.picture_id, -1);
if (output_record.egl_sync != EGL_NO_SYNC_KHR) {
// If we have to wait for completion, wait. Note that
// free_output_buffers_ is a FIFO queue, so we always wait on the
// buffer that has been in the queue the longest.
if (eglClientWaitSyncKHR(egl_display_, output_record.egl_sync, 0,
EGL_FOREVER_KHR) == EGL_FALSE) {
// This will cause tearing, but is safe otherwise.
DVLOGF(1) << "eglClientWaitSyncKHR failed!";
}
if (eglDestroySyncKHR(egl_display_, output_record.egl_sync) != EGL_TRUE) {
LOGF(ERROR) << "eglDestroySyncKHR failed!";
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
output_record.egl_sync = EGL_NO_SYNC_KHR;
}
struct v4l2_buffer qbuf;
struct v4l2_plane qbuf_planes[VIDEO_MAX_PLANES];
memset(&qbuf, 0, sizeof(qbuf));
memset(qbuf_planes, 0, sizeof(qbuf_planes));
qbuf.index = index;
qbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
if (output_mode_ == Config::OutputMode::ALLOCATE) {
qbuf.memory = V4L2_MEMORY_MMAP;
} else {
qbuf.memory = V4L2_MEMORY_DMABUF;
DCHECK_EQ(output_planes_count_, output_record.dmabuf_fds.size());
for (size_t i = 0; i < output_record.dmabuf_fds.size(); ++i) {
DCHECK(output_record.dmabuf_fds[i].is_valid());
qbuf_planes[i].m.fd = output_record.dmabuf_fds[i].get();
}
}
qbuf.m.planes = qbuf_planes;
qbuf.length = output_planes_count_;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_QBUF, &qbuf);
output_record.at_device = true;
output_buffer_queued_count_++;
DVLOGF(4) << "Enqueued output=" << qbuf.index
<< " count: " << output_buffer_queued_count_;
return true;
}
bool V4L2SliceVideoDecodeAccelerator::StartDevicePoll() {
DVLOGF(3) << "Starting device poll";
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK(!device_poll_thread_.IsRunning());
// Start up the device poll thread and schedule its first DevicePollTask().
if (!device_poll_thread_.Start()) {
DLOGF(ERROR) << "Device thread failed to start";
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
if (!input_streamon_) {
__u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_STREAMON, &type);
input_streamon_ = true;
}
if (!output_streamon_) {
__u32 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_STREAMON, &type);
output_streamon_ = true;
}
device_poll_thread_.message_loop()->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::DevicePollTask,
base::Unretained(this), true));
return true;
}
bool V4L2SliceVideoDecodeAccelerator::StopDevicePoll(bool keep_input_state) {
DVLOGF(3) << "Stopping device poll";
if (decoder_thread_.IsRunning())
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
// Signal the DevicePollTask() to stop, and stop the device poll thread.
if (!device_->SetDevicePollInterrupt()) {
PLOGF(ERROR) << "SetDevicePollInterrupt(): failed";
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
device_poll_thread_.Stop();
DVLOGF(3) << "Device poll thread stopped";
// Clear the interrupt now, to be sure.
if (!device_->ClearDevicePollInterrupt()) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
if (!keep_input_state) {
if (input_streamon_) {
__u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_STREAMOFF, &type);
}
input_streamon_ = false;
}
if (output_streamon_) {
__u32 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_STREAMOFF, &type);
}
output_streamon_ = false;
if (!keep_input_state) {
for (size_t i = 0; i < input_buffer_map_.size(); ++i) {
InputRecord& input_record = input_buffer_map_[i];
if (input_record.at_device) {
input_record.at_device = false;
ReuseInputBuffer(i);
input_buffer_queued_count_--;
}
}
DCHECK_EQ(input_buffer_queued_count_, 0);
}
// STREAMOFF makes the driver drop all buffers without decoding and DQBUFing,
// so we mark them all as at_device = false and clear surfaces_at_device_.
for (size_t i = 0; i < output_buffer_map_.size(); ++i) {
OutputRecord& output_record = output_buffer_map_[i];
if (output_record.at_device) {
output_record.at_device = false;
output_buffer_queued_count_--;
}
}
surfaces_at_device_.clear();
DCHECK_EQ(output_buffer_queued_count_, 0);
// Drop all surfaces that were awaiting decode before being displayed,
// since we've just cancelled all outstanding decodes.
while (!decoder_display_queue_.empty())
decoder_display_queue_.pop();
DVLOGF(3) << "Device poll stopped";
return true;
}
void V4L2SliceVideoDecodeAccelerator::Decode(
const BitstreamBuffer& bitstream_buffer) {
DVLOGF(3) << "input_id=" << bitstream_buffer.id()
<< ", size=" << bitstream_buffer.size();
DCHECK(decode_task_runner_->BelongsToCurrentThread());
if (bitstream_buffer.id() < 0) {
LOGF(ERROR) << "Invalid bitstream_buffer, id: " << bitstream_buffer.id();
if (base::SharedMemory::IsHandleValid(bitstream_buffer.handle()))
base::SharedMemory::CloseHandle(bitstream_buffer.handle());
NOTIFY_ERROR(INVALID_ARGUMENT);
return;
}
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::DecodeTask,
base::Unretained(this), bitstream_buffer));
}
void V4L2SliceVideoDecodeAccelerator::DecodeTask(
const BitstreamBuffer& bitstream_buffer) {
DVLOGF(3) << "input_id=" << bitstream_buffer.id()
<< " size=" << bitstream_buffer.size();
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
std::unique_ptr<BitstreamBufferRef> bitstream_record(new BitstreamBufferRef(
decode_client_, decode_task_runner_,
new SharedMemoryRegion(bitstream_buffer, true), bitstream_buffer.id()));
// Skip empty buffer.
if (bitstream_buffer.size() == 0)
return;
if (!bitstream_record->shm->Map()) {
LOGF(ERROR) << "Could not map bitstream_buffer";
NOTIFY_ERROR(UNREADABLE_INPUT);
return;
}
DVLOGF(3) << "mapped at=" << bitstream_record->shm->memory();
decoder_input_queue_.push(
linked_ptr<BitstreamBufferRef>(bitstream_record.release()));
ScheduleDecodeBufferTaskIfNeeded();
}
bool V4L2SliceVideoDecodeAccelerator::TrySetNewBistreamBuffer() {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK(!decoder_current_bitstream_buffer_);
if (decoder_input_queue_.empty())
return false;
decoder_current_bitstream_buffer_.reset(
decoder_input_queue_.front().release());
decoder_input_queue_.pop();
if (decoder_current_bitstream_buffer_->input_id == kFlushBufferId) {
// This is a buffer we queued for ourselves to trigger flush at this time.
InitiateFlush();
return false;
}
const uint8_t* const data = reinterpret_cast<const uint8_t*>(
decoder_current_bitstream_buffer_->shm->memory());
const size_t data_size = decoder_current_bitstream_buffer_->shm->size();
decoder_->SetStream(data, data_size);
return true;
}
void V4L2SliceVideoDecodeAccelerator::ScheduleDecodeBufferTaskIfNeeded() {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (state_ == kDecoding) {
decoder_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&V4L2SliceVideoDecodeAccelerator::DecodeBufferTask,
base::Unretained(this)));
}
}
void V4L2SliceVideoDecodeAccelerator::DecodeBufferTask() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (state_ != kDecoding) {
DVLOGF(3) << "Early exit, not in kDecoding";
return;
}
while (true) {
AcceleratedVideoDecoder::DecodeResult res;
res = decoder_->Decode();
switch (res) {
case AcceleratedVideoDecoder::kAllocateNewSurfaces:
DVLOGF(2) << "Decoder requesting a new set of surfaces";
InitiateSurfaceSetChange();
return;
case AcceleratedVideoDecoder::kRanOutOfStreamData:
decoder_current_bitstream_buffer_.reset();
if (!TrySetNewBistreamBuffer())
return;
break;
case AcceleratedVideoDecoder::kRanOutOfSurfaces:
// No more surfaces for the decoder, we'll come back once we have more.
DVLOGF(4) << "Ran out of surfaces";
return;
case AcceleratedVideoDecoder::kDecodeError:
DVLOGF(1) << "Error decoding stream";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
}
}
void V4L2SliceVideoDecodeAccelerator::InitiateSurfaceSetChange() {
DVLOGF(2);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_EQ(state_, kDecoding);
DCHECK(!surface_set_change_pending_);
surface_set_change_pending_ = true;
NewEventPending();
}
bool V4L2SliceVideoDecodeAccelerator::FinishSurfaceSetChange() {
DVLOGF(2);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (!surface_set_change_pending_)
return true;
if (!surfaces_at_device_.empty())
return false;
DCHECK_EQ(state_, kIdle);
DCHECK(decoder_display_queue_.empty());
// All output buffers should've been returned from decoder and device by now.
// The only remaining owner of surfaces may be display (client), and we will
// dismiss them when destroying output buffers below.
DCHECK_EQ(free_output_buffers_.size() + surfaces_at_display_.size(),
output_buffer_map_.size());
// Keep input queue running while we switch outputs.
if (!StopDevicePoll(true)) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
// This will return only once all buffers are dismissed and destroyed.
// This does not wait until they are displayed however, as display retains
// references to the buffers bound to textures and will release them
// after displaying.
if (!DestroyOutputs(true)) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
if (!CreateOutputBuffers()) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return false;
}
surface_set_change_pending_ = false;
DVLOGF(3) << "Surface set change finished";
return true;
}
bool V4L2SliceVideoDecodeAccelerator::DestroyOutputs(bool dismiss) {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
std::vector<int32_t> picture_buffers_to_dismiss;
if (output_buffer_map_.empty())
return true;
for (const auto& output_record : output_buffer_map_) {
DCHECK(!output_record.at_device);
if (output_record.egl_sync != EGL_NO_SYNC_KHR) {
if (eglDestroySyncKHR(egl_display_, output_record.egl_sync) != EGL_TRUE)
DVLOGF(1) << "eglDestroySyncKHR failed.";
}
if (output_record.egl_image != EGL_NO_IMAGE_KHR) {
child_task_runner_->PostTask(
FROM_HERE,
base::Bind(base::IgnoreResult(&V4L2Device::DestroyEGLImage), device_,
egl_display_, output_record.egl_image));
}
picture_buffers_to_dismiss.push_back(output_record.picture_id);
}
if (dismiss) {
DVLOGF(2) << "Scheduling picture dismissal";
base::WaitableEvent done(base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED);
child_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::DismissPictures,
weak_this_, picture_buffers_to_dismiss, &done));
done.Wait();
}
// At this point client can't call ReusePictureBuffer on any of the pictures
// anymore, so it's safe to destroy.
return DestroyOutputBuffers();
}
bool V4L2SliceVideoDecodeAccelerator::DestroyOutputBuffers() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread() ||
!decoder_thread_.IsRunning());
DCHECK(!output_streamon_);
DCHECK(surfaces_at_device_.empty());
DCHECK(decoder_display_queue_.empty());
DCHECK_EQ(surfaces_at_display_.size() + free_output_buffers_.size(),
output_buffer_map_.size());
if (output_buffer_map_.empty())
return true;
// It's ok to do this, client will retain references to textures, but we are
// not interested in reusing the surfaces anymore.
// This will prevent us from reusing old surfaces in case we have some
// ReusePictureBuffer() pending on ChildThread already. It's ok to ignore
// them, because we have already dismissed them (in DestroyOutputs()).
for (const auto& surface_at_display : surfaces_at_display_) {
size_t index = surface_at_display.second->output_record();
DCHECK_LT(index, output_buffer_map_.size());
OutputRecord& output_record = output_buffer_map_[index];
DCHECK(output_record.at_client);
output_record.at_client = false;
}
surfaces_at_display_.clear();
DCHECK_EQ(free_output_buffers_.size(), output_buffer_map_.size());
free_output_buffers_.clear();
output_buffer_map_.clear();
struct v4l2_requestbuffers reqbufs;
memset(&reqbufs, 0, sizeof(reqbufs));
reqbufs.count = 0;
reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
reqbufs.memory = V4L2_MEMORY_MMAP;
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_REQBUFS, &reqbufs);
return true;
}
void V4L2SliceVideoDecodeAccelerator::AssignPictureBuffers(
const std::vector<PictureBuffer>& buffers) {
DVLOGF(3);
DCHECK(child_task_runner_->BelongsToCurrentThread());
decoder_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&V4L2SliceVideoDecodeAccelerator::AssignPictureBuffersTask,
base::Unretained(this), buffers));
}
void V4L2SliceVideoDecodeAccelerator::AssignPictureBuffersTask(
const std::vector<PictureBuffer>& buffers) {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_EQ(state_, kAwaitingPictureBuffers);
const uint32_t req_buffer_count = decoder_->GetRequiredNumOfPictures();
if (buffers.size() < req_buffer_count) {
DLOG(ERROR) << "Failed to provide requested picture buffers. "
<< "(Got " << buffers.size()
<< ", requested " << req_buffer_count << ")";
NOTIFY_ERROR(INVALID_ARGUMENT);
return;
}
// Allocate the output buffers.
struct v4l2_requestbuffers reqbufs;
memset(&reqbufs, 0, sizeof(reqbufs));
reqbufs.count = buffers.size();
reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
reqbufs.memory =
(output_mode_ == Config::OutputMode::ALLOCATE ? V4L2_MEMORY_MMAP
: V4L2_MEMORY_DMABUF);
IOCTL_OR_ERROR_RETURN(VIDIOC_REQBUFS, &reqbufs);
if (reqbufs.count != buffers.size()) {
DLOGF(ERROR) << "Could not allocate enough output buffers";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
DCHECK(free_output_buffers_.empty());
DCHECK(output_buffer_map_.empty());
output_buffer_map_.resize(buffers.size());
for (size_t i = 0; i < output_buffer_map_.size(); ++i) {
DCHECK(buffers[i].size() == coded_size_);
DCHECK_EQ(1u, buffers[i].texture_ids().size());
OutputRecord& output_record = output_buffer_map_[i];
DCHECK(!output_record.at_device);
DCHECK(!output_record.at_client);
DCHECK_EQ(output_record.egl_image, EGL_NO_IMAGE_KHR);
DCHECK_EQ(output_record.egl_sync, EGL_NO_SYNC_KHR);
DCHECK_EQ(output_record.picture_id, -1);
DCHECK(output_record.dmabuf_fds.empty());
DCHECK_EQ(output_record.cleared, false);
output_record.picture_id = buffers[i].id();
output_record.texture_id = buffers[i].texture_ids()[0];
// This will remain true until ImportBufferForPicture is called, either by
// the client, or by ourselves, if we are allocating.
output_record.at_client = true;
if (output_mode_ == Config::OutputMode::ALLOCATE) {
std::vector<base::ScopedFD> dmabuf_fds =
std::move(device_->GetDmabufsForV4L2Buffer(
i, output_planes_count_, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE));
if (dmabuf_fds.empty()) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
auto passed_dmabuf_fds(base::WrapUnique(
new std::vector<base::ScopedFD>(std::move(dmabuf_fds))));
ImportBufferForPictureTask(output_record.picture_id,
std::move(passed_dmabuf_fds));
} // else we'll get triggered via ImportBufferForPicture() from client.
DVLOGF(3) << "buffer[" << i << "]: picture_id=" << output_record.picture_id;
}
if (!StartDevicePoll()) {
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
// Put us in kIdle to allow further event processing.
// ProcessPendingEventsIfNeeded() will put us back into kDecoding after all
// other pending events are processed successfully.
state_ = kIdle;
ProcessPendingEventsIfNeeded();
}
void V4L2SliceVideoDecodeAccelerator::CreateEGLImageFor(
size_t buffer_index,
int32_t picture_buffer_id,
std::unique_ptr<std::vector<base::ScopedFD>> passed_dmabuf_fds,
GLuint texture_id,
const gfx::Size& size,
uint32_t fourcc) {
DVLOGF(3) << "index=" << buffer_index;
DCHECK(child_task_runner_->BelongsToCurrentThread());
if (get_gl_context_cb_.is_null() || make_context_current_cb_.is_null()) {
DLOGF(ERROR) << "GL callbacks required for binding to EGLImages";
NOTIFY_ERROR(INVALID_ARGUMENT);
return;
}
gl::GLContext* gl_context = get_gl_context_cb_.Run();
if (!gl_context || !make_context_current_cb_.Run()) {
DLOGF(ERROR) << "No GL context";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
gl::ScopedTextureBinder bind_restore(GL_TEXTURE_EXTERNAL_OES, 0);
EGLImageKHR egl_image =
device_->CreateEGLImage(egl_display_, gl_context->GetHandle(), texture_id,
size, buffer_index, fourcc, *passed_dmabuf_fds);
if (egl_image == EGL_NO_IMAGE_KHR) {
LOGF(ERROR) << "Could not create EGLImageKHR,"
<< " index=" << buffer_index << " texture_id=" << texture_id;
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
decoder_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&V4L2SliceVideoDecodeAccelerator::AssignEGLImage,
base::Unretained(this), buffer_index, picture_buffer_id,
egl_image, base::Passed(&passed_dmabuf_fds)));
}
void V4L2SliceVideoDecodeAccelerator::AssignEGLImage(
size_t buffer_index,
int32_t picture_buffer_id,
EGLImageKHR egl_image,
std::unique_ptr<std::vector<base::ScopedFD>> passed_dmabuf_fds) {
DVLOGF(3) << "index=" << buffer_index;
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
// It's possible that while waiting for the EGLImages to be allocated and
// assigned, we have already decoded more of the stream and saw another
// resolution change. This is a normal situation, in such a case either there
// is no output record with this index awaiting an EGLImage to be assigned to
// it, or the record is already updated to use a newer PictureBuffer and is
// awaiting an EGLImage associated with a different picture_buffer_id. If so,
// just discard this image, we will get the one we are waiting for later.
if (buffer_index >= output_buffer_map_.size() ||
output_buffer_map_[buffer_index].picture_id != picture_buffer_id) {
DVLOGF(3) << "Picture set already changed, dropping EGLImage";
child_task_runner_->PostTask(
FROM_HERE, base::Bind(base::IgnoreResult(&V4L2Device::DestroyEGLImage),
device_, egl_display_, egl_image));
return;
}
OutputRecord& output_record = output_buffer_map_[buffer_index];
DCHECK_EQ(output_record.egl_image, EGL_NO_IMAGE_KHR);
DCHECK_EQ(output_record.egl_sync, EGL_NO_SYNC_KHR);
DCHECK(!output_record.at_client);
DCHECK(!output_record.at_device);
output_record.egl_image = egl_image;
if (output_mode_ == Config::OutputMode::IMPORT) {
DCHECK(output_record.dmabuf_fds.empty());
output_record.dmabuf_fds = std::move(*passed_dmabuf_fds);
}
DCHECK_EQ(std::count(free_output_buffers_.begin(), free_output_buffers_.end(),
buffer_index),
0);
free_output_buffers_.push_back(buffer_index);
ScheduleDecodeBufferTaskIfNeeded();
}
void V4L2SliceVideoDecodeAccelerator::ImportBufferForPicture(
int32_t picture_buffer_id,
const gfx::GpuMemoryBufferHandle& gpu_memory_buffer_handle) {
DVLOGF(3) << "picture_buffer_id=" << picture_buffer_id;
DCHECK(child_task_runner_->BelongsToCurrentThread());
auto passed_dmabuf_fds(base::WrapUnique(new std::vector<base::ScopedFD>()));
#if defined(USE_OZONE)
for (const auto& fd : gpu_memory_buffer_handle.native_pixmap_handle.fds) {
DCHECK_NE(fd.fd, -1);
passed_dmabuf_fds->push_back(base::ScopedFD(fd.fd));
}
#endif
if (output_mode_ != Config::OutputMode::IMPORT) {
LOGF(ERROR) << "Cannot import in non-import mode";
NOTIFY_ERROR(INVALID_ARGUMENT);
return;
}
decoder_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&V4L2SliceVideoDecodeAccelerator::ImportBufferForPictureTask,
base::Unretained(this), picture_buffer_id,
base::Passed(&passed_dmabuf_fds)));
}
void V4L2SliceVideoDecodeAccelerator::ImportBufferForPictureTask(
int32_t picture_buffer_id,
std::unique_ptr<std::vector<base::ScopedFD>> passed_dmabuf_fds) {
DVLOGF(3) << "picture_buffer_id=" << picture_buffer_id;
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
const auto iter =
std::find_if(output_buffer_map_.begin(), output_buffer_map_.end(),
[picture_buffer_id](const OutputRecord& output_record) {
return output_record.picture_id == picture_buffer_id;
});
if (iter == output_buffer_map_.end()) {
// It's possible that we've already posted a DismissPictureBuffer for this
// picture, but it has not yet executed when this ImportBufferForPicture was
// posted to us by the client. In that case just ignore this (we've already
// dismissed it and accounted for that).
DVLOGF(3) << "got picture id=" << picture_buffer_id
<< " not in use (anymore?).";
return;
}
if (!iter->at_client) {
LOGF(ERROR) << "Cannot import buffer that not owned by client";
NOTIFY_ERROR(INVALID_ARGUMENT);
return;
}
size_t index = iter - output_buffer_map_.begin();
DCHECK_EQ(std::count(free_output_buffers_.begin(), free_output_buffers_.end(),
index),
0);
DCHECK(!iter->at_device);
iter->at_client = false;
if (iter->texture_id != 0) {
if (iter->egl_image != EGL_NO_IMAGE_KHR) {
child_task_runner_->PostTask(
FROM_HERE,
base::Bind(base::IgnoreResult(&V4L2Device::DestroyEGLImage), device_,
egl_display_, iter->egl_image));
}
child_task_runner_->PostTask(
FROM_HERE,
base::Bind(&V4L2SliceVideoDecodeAccelerator::CreateEGLImageFor,
weak_this_, index, picture_buffer_id,
base::Passed(&passed_dmabuf_fds), iter->texture_id,
coded_size_, output_format_fourcc_));
} else {
// No need for an EGLImage, start using this buffer now.
DCHECK_EQ(output_planes_count_, passed_dmabuf_fds->size());
iter->dmabuf_fds.swap(*passed_dmabuf_fds);
free_output_buffers_.push_back(index);
ScheduleDecodeBufferTaskIfNeeded();
}
}
void V4L2SliceVideoDecodeAccelerator::ReusePictureBuffer(
int32_t picture_buffer_id) {
DCHECK(child_task_runner_->BelongsToCurrentThread());
DVLOGF(4) << "picture_buffer_id=" << picture_buffer_id;
std::unique_ptr<EGLSyncKHRRef> egl_sync_ref;
if (!make_context_current_cb_.is_null()) {
if (!make_context_current_cb_.Run()) {
LOGF(ERROR) << "could not make context current";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
EGLSyncKHR egl_sync =
eglCreateSyncKHR(egl_display_, EGL_SYNC_FENCE_KHR, NULL);
if (egl_sync == EGL_NO_SYNC_KHR) {
LOGF(ERROR) << "eglCreateSyncKHR() failed";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
egl_sync_ref.reset(new EGLSyncKHRRef(egl_display_, egl_sync));
}
decoder_thread_task_runner_->PostTask(
FROM_HERE,
base::Bind(&V4L2SliceVideoDecodeAccelerator::ReusePictureBufferTask,
base::Unretained(this), picture_buffer_id,
base::Passed(&egl_sync_ref)));
}
void V4L2SliceVideoDecodeAccelerator::ReusePictureBufferTask(
int32_t picture_buffer_id,
std::unique_ptr<EGLSyncKHRRef> egl_sync_ref) {
DVLOGF(3) << "picture_buffer_id=" << picture_buffer_id;
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
V4L2DecodeSurfaceByPictureBufferId::iterator it =
surfaces_at_display_.find(picture_buffer_id);
if (it == surfaces_at_display_.end()) {
// It's possible that we've already posted a DismissPictureBuffer for this
// picture, but it has not yet executed when this ReusePictureBuffer was
// posted to us by the client. In that case just ignore this (we've already
// dismissed it and accounted for that) and let the sync object get
// destroyed.
DVLOGF(3) << "got picture id=" << picture_buffer_id
<< " not in use (anymore?).";
return;
}
OutputRecord& output_record = output_buffer_map_[it->second->output_record()];
if (output_record.at_device || !output_record.at_client) {
DVLOGF(1) << "picture_buffer_id not reusable";
NOTIFY_ERROR(INVALID_ARGUMENT);
return;
}
DCHECK_EQ(output_record.egl_sync, EGL_NO_SYNC_KHR);
DCHECK(!output_record.at_device);
output_record.at_client = false;
if (egl_sync_ref) {
output_record.egl_sync = egl_sync_ref->egl_sync;
// Take ownership of the EGLSync.
egl_sync_ref->egl_sync = EGL_NO_SYNC_KHR;
}
surfaces_at_display_.erase(it);
}
void V4L2SliceVideoDecodeAccelerator::Flush() {
DVLOGF(3);
DCHECK(child_task_runner_->BelongsToCurrentThread());
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::FlushTask,
base::Unretained(this)));
}
void V4L2SliceVideoDecodeAccelerator::FlushTask() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
// Queue an empty buffer which - when reached - will trigger flush sequence.
decoder_input_queue_.push(
linked_ptr<BitstreamBufferRef>(new BitstreamBufferRef(
decode_client_, decode_task_runner_, nullptr, kFlushBufferId)));
ScheduleDecodeBufferTaskIfNeeded();
}
void V4L2SliceVideoDecodeAccelerator::InitiateFlush() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
// This will trigger output for all remaining surfaces in the decoder.
// However, not all of them may be decoded yet (they would be queued
// in hardware then).
if (!decoder_->Flush()) {
DVLOGF(1) << "Failed flushing the decoder.";
NOTIFY_ERROR(PLATFORM_FAILURE);
return;
}
// Put the decoder in an idle state, ready to resume.
decoder_->Reset();
DCHECK(!decoder_flushing_);
decoder_flushing_ = true;
NewEventPending();
}
bool V4L2SliceVideoDecodeAccelerator::FinishFlush() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (!decoder_flushing_)
return true;
if (!surfaces_at_device_.empty())
return false;
DCHECK_EQ(state_, kIdle);
// At this point, all remaining surfaces are decoded and dequeued, and since
// we have already scheduled output for them in InitiateFlush(), their
// respective PictureReady calls have been posted (or they have been queued on
// pending_picture_ready_). So at this time, once we SendPictureReady(),
// we will have all remaining PictureReady() posted to the client and we
// can post NotifyFlushDone().
DCHECK(decoder_display_queue_.empty());
// Decoder should have already returned all surfaces and all surfaces are
// out of hardware. There can be no other owners of input buffers.
DCHECK_EQ(free_input_buffers_.size(), input_buffer_map_.size());
SendPictureReady();
decoder_flushing_ = false;
DVLOGF(3) << "Flush finished";
child_task_runner_->PostTask(FROM_HERE,
base::Bind(&Client::NotifyFlushDone, client_));
return true;
}
void V4L2SliceVideoDecodeAccelerator::Reset() {
DVLOGF(3);
DCHECK(child_task_runner_->BelongsToCurrentThread());
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::ResetTask,
base::Unretained(this)));
}
void V4L2SliceVideoDecodeAccelerator::ResetTask() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (decoder_resetting_) {
// This is a bug in the client, multiple Reset()s before NotifyResetDone()
// are not allowed.
NOTREACHED() << "Client should not be requesting multiple Reset()s";
return;
}
// Put the decoder in an idle state, ready to resume.
decoder_->Reset();
// Drop all remaining inputs.
decoder_current_bitstream_buffer_.reset();
while (!decoder_input_queue_.empty())
decoder_input_queue_.pop();
decoder_resetting_ = true;
NewEventPending();
}
bool V4L2SliceVideoDecodeAccelerator::FinishReset() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
if (!decoder_resetting_)
return true;
if (!surfaces_at_device_.empty())
return false;
DCHECK_EQ(state_, kIdle);
DCHECK(!decoder_flushing_);
SendPictureReady();
// Drop any pending outputs.
while (!decoder_display_queue_.empty())
decoder_display_queue_.pop();
// At this point we can have no input buffers in the decoder, because we
// Reset()ed it in ResetTask(), and have not scheduled any new Decode()s
// having been in kIdle since. We don't have any surfaces in the HW either -
// we just checked that surfaces_at_device_.empty(), and inputs are tied
// to surfaces. Since there can be no other owners of input buffers, we can
// simply mark them all as available.
DCHECK_EQ(input_buffer_queued_count_, 0);
free_input_buffers_.clear();
for (size_t i = 0; i < input_buffer_map_.size(); ++i) {
DCHECK(!input_buffer_map_[i].at_device);
ReuseInputBuffer(i);
}
decoder_resetting_ = false;
DVLOGF(3) << "Reset finished";
child_task_runner_->PostTask(FROM_HERE,
base::Bind(&Client::NotifyResetDone, client_));
return true;
}
void V4L2SliceVideoDecodeAccelerator::SetErrorState(Error error) {
// We can touch decoder_state_ only if this is the decoder thread or the
// decoder thread isn't running.
if (decoder_thread_.IsRunning() &&
!decoder_thread_task_runner_->BelongsToCurrentThread()) {
decoder_thread_task_runner_->PostTask(
FROM_HERE, base::Bind(&V4L2SliceVideoDecodeAccelerator::SetErrorState,
base::Unretained(this), error));
return;
}
// Post NotifyError only if we are already initialized, as the API does
// not allow doing so before that.
if (state_ != kError && state_ != kUninitialized)
NotifyError(error);
state_ = kError;
}
V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::V4L2H264Accelerator(
V4L2SliceVideoDecodeAccelerator* v4l2_dec)
: num_slices_(0), v4l2_dec_(v4l2_dec) {
DCHECK(v4l2_dec_);
}
V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::~V4L2H264Accelerator() {}
scoped_refptr<H264Picture>
V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::CreateH264Picture() {
scoped_refptr<V4L2DecodeSurface> dec_surface = v4l2_dec_->CreateSurface();
if (!dec_surface)
return nullptr;
return new V4L2H264Picture(dec_surface);
}
void V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::
H264PictureListToDPBIndicesList(const H264Picture::Vector& src_pic_list,
uint8_t dst_list[kDPBIndicesListSize]) {
size_t i;
for (i = 0; i < src_pic_list.size() && i < kDPBIndicesListSize; ++i) {
const scoped_refptr<H264Picture>& pic = src_pic_list[i];
dst_list[i] = pic ? pic->dpb_position : VIDEO_MAX_FRAME;
}
while (i < kDPBIndicesListSize)
dst_list[i++] = VIDEO_MAX_FRAME;
}
void V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::H264DPBToV4L2DPB(
const H264DPB& dpb,
std::vector<scoped_refptr<V4L2DecodeSurface>>* ref_surfaces) {
memset(v4l2_decode_param_.dpb, 0, sizeof(v4l2_decode_param_.dpb));
size_t i = 0;
for (const auto& pic : dpb) {
if (i >= arraysize(v4l2_decode_param_.dpb)) {
DVLOGF(1) << "Invalid DPB size";
break;
}
int index = VIDEO_MAX_FRAME;
if (!pic->nonexisting) {
scoped_refptr<V4L2DecodeSurface> dec_surface =
H264PictureToV4L2DecodeSurface(pic);
index = dec_surface->output_record();
ref_surfaces->push_back(dec_surface);
}
struct v4l2_h264_dpb_entry& entry = v4l2_decode_param_.dpb[i++];
entry.buf_index = index;
entry.frame_num = pic->frame_num;
entry.pic_num = pic->pic_num;
entry.top_field_order_cnt = pic->top_field_order_cnt;
entry.bottom_field_order_cnt = pic->bottom_field_order_cnt;
entry.flags = (pic->ref ? V4L2_H264_DPB_ENTRY_FLAG_ACTIVE : 0) |
(pic->long_term ? V4L2_H264_DPB_ENTRY_FLAG_LONG_TERM : 0);
}
}
bool V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::SubmitFrameMetadata(
const H264SPS* sps,
const H264PPS* pps,
const H264DPB& dpb,
const H264Picture::Vector& ref_pic_listp0,
const H264Picture::Vector& ref_pic_listb0,
const H264Picture::Vector& ref_pic_listb1,
const scoped_refptr<H264Picture>& pic) {
struct v4l2_ext_control ctrl;
std::vector<struct v4l2_ext_control> ctrls;
struct v4l2_ctrl_h264_sps v4l2_sps;
memset(&v4l2_sps, 0, sizeof(v4l2_sps));
v4l2_sps.constraint_set_flags =
(sps->constraint_set0_flag ? V4L2_H264_SPS_CONSTRAINT_SET0_FLAG : 0) |
(sps->constraint_set1_flag ? V4L2_H264_SPS_CONSTRAINT_SET1_FLAG : 0) |
(sps->constraint_set2_flag ? V4L2_H264_SPS_CONSTRAINT_SET2_FLAG : 0) |
(sps->constraint_set3_flag ? V4L2_H264_SPS_CONSTRAINT_SET3_FLAG : 0) |
(sps->constraint_set4_flag ? V4L2_H264_SPS_CONSTRAINT_SET4_FLAG : 0) |
(sps->constraint_set5_flag ? V4L2_H264_SPS_CONSTRAINT_SET5_FLAG : 0);
#define SPS_TO_V4L2SPS(a) v4l2_sps.a = sps->a
SPS_TO_V4L2SPS(profile_idc);
SPS_TO_V4L2SPS(level_idc);
SPS_TO_V4L2SPS(seq_parameter_set_id);
SPS_TO_V4L2SPS(chroma_format_idc);
SPS_TO_V4L2SPS(bit_depth_luma_minus8);
SPS_TO_V4L2SPS(bit_depth_chroma_minus8);
SPS_TO_V4L2SPS(log2_max_frame_num_minus4);
SPS_TO_V4L2SPS(pic_order_cnt_type);
SPS_TO_V4L2SPS(log2_max_pic_order_cnt_lsb_minus4);
SPS_TO_V4L2SPS(offset_for_non_ref_pic);
SPS_TO_V4L2SPS(offset_for_top_to_bottom_field);
SPS_TO_V4L2SPS(num_ref_frames_in_pic_order_cnt_cycle);
static_assert(arraysize(v4l2_sps.offset_for_ref_frame) ==
arraysize(sps->offset_for_ref_frame),
"offset_for_ref_frame arrays must be same size");
for (size_t i = 0; i < arraysize(v4l2_sps.offset_for_ref_frame); ++i)
v4l2_sps.offset_for_ref_frame[i] = sps->offset_for_ref_frame[i];
SPS_TO_V4L2SPS(max_num_ref_frames);
SPS_TO_V4L2SPS(pic_width_in_mbs_minus1);
SPS_TO_V4L2SPS(pic_height_in_map_units_minus1);
#undef SPS_TO_V4L2SPS
#define SET_V4L2_SPS_FLAG_IF(cond, flag) \
v4l2_sps.flags |= ((sps->cond) ? (flag) : 0)
SET_V4L2_SPS_FLAG_IF(separate_colour_plane_flag,
V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE);
SET_V4L2_SPS_FLAG_IF(qpprime_y_zero_transform_bypass_flag,
V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS);
SET_V4L2_SPS_FLAG_IF(delta_pic_order_always_zero_flag,
V4L2_H264_SPS_FLAG_DELTA_PIC_ORDER_ALWAYS_ZERO);
SET_V4L2_SPS_FLAG_IF(gaps_in_frame_num_value_allowed_flag,
V4L2_H264_SPS_FLAG_GAPS_IN_FRAME_NUM_VALUE_ALLOWED);
SET_V4L2_SPS_FLAG_IF(frame_mbs_only_flag, V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY);
SET_V4L2_SPS_FLAG_IF(mb_adaptive_frame_field_flag,
V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD);
SET_V4L2_SPS_FLAG_IF(direct_8x8_inference_flag,
V4L2_H264_SPS_FLAG_DIRECT_8X8_INFERENCE);
#undef SET_FLAG
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_MPEG_VIDEO_H264_SPS;
ctrl.size = sizeof(v4l2_sps);
ctrl.p_h264_sps = &v4l2_sps;
ctrls.push_back(ctrl);
struct v4l2_ctrl_h264_pps v4l2_pps;
memset(&v4l2_pps, 0, sizeof(v4l2_pps));
#define PPS_TO_V4L2PPS(a) v4l2_pps.a = pps->a
PPS_TO_V4L2PPS(pic_parameter_set_id);
PPS_TO_V4L2PPS(seq_parameter_set_id);
PPS_TO_V4L2PPS(num_slice_groups_minus1);
PPS_TO_V4L2PPS(num_ref_idx_l0_default_active_minus1);
PPS_TO_V4L2PPS(num_ref_idx_l1_default_active_minus1);
PPS_TO_V4L2PPS(weighted_bipred_idc);
PPS_TO_V4L2PPS(pic_init_qp_minus26);
PPS_TO_V4L2PPS(pic_init_qs_minus26);
PPS_TO_V4L2PPS(chroma_qp_index_offset);
PPS_TO_V4L2PPS(second_chroma_qp_index_offset);
#undef PPS_TO_V4L2PPS
#define SET_V4L2_PPS_FLAG_IF(cond, flag) \
v4l2_pps.flags |= ((pps->cond) ? (flag) : 0)
SET_V4L2_PPS_FLAG_IF(entropy_coding_mode_flag,
V4L2_H264_PPS_FLAG_ENTROPY_CODING_MODE);
SET_V4L2_PPS_FLAG_IF(
bottom_field_pic_order_in_frame_present_flag,
V4L2_H264_PPS_FLAG_BOTTOM_FIELD_PIC_ORDER_IN_FRAME_PRESENT);
SET_V4L2_PPS_FLAG_IF(weighted_pred_flag, V4L2_H264_PPS_FLAG_WEIGHTED_PRED);
SET_V4L2_PPS_FLAG_IF(deblocking_filter_control_present_flag,
V4L2_H264_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT);
SET_V4L2_PPS_FLAG_IF(constrained_intra_pred_flag,
V4L2_H264_PPS_FLAG_CONSTRAINED_INTRA_PRED);
SET_V4L2_PPS_FLAG_IF(redundant_pic_cnt_present_flag,
V4L2_H264_PPS_FLAG_REDUNDANT_PIC_CNT_PRESENT);
SET_V4L2_PPS_FLAG_IF(transform_8x8_mode_flag,
V4L2_H264_PPS_FLAG_TRANSFORM_8X8_MODE);
SET_V4L2_PPS_FLAG_IF(pic_scaling_matrix_present_flag,
V4L2_H264_PPS_FLAG_PIC_SCALING_MATRIX_PRESENT);
#undef SET_V4L2_PPS_FLAG_IF
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_MPEG_VIDEO_H264_PPS;
ctrl.size = sizeof(v4l2_pps);
ctrl.p_h264_pps = &v4l2_pps;
ctrls.push_back(ctrl);
struct v4l2_ctrl_h264_scaling_matrix v4l2_scaling_matrix;
memset(&v4l2_scaling_matrix, 0, sizeof(v4l2_scaling_matrix));
static_assert(arraysize(v4l2_scaling_matrix.scaling_list_4x4) <=
arraysize(pps->scaling_list4x4) &&
arraysize(v4l2_scaling_matrix.scaling_list_4x4[0]) <=
arraysize(pps->scaling_list4x4[0]) &&
arraysize(v4l2_scaling_matrix.scaling_list_8x8) <=
arraysize(pps->scaling_list8x8) &&
arraysize(v4l2_scaling_matrix.scaling_list_8x8[0]) <=
arraysize(pps->scaling_list8x8[0]),
"scaling_lists must be of correct size");
for (size_t i = 0; i < arraysize(v4l2_scaling_matrix.scaling_list_4x4); ++i) {
for (size_t j = 0; j < arraysize(v4l2_scaling_matrix.scaling_list_4x4[i]);
++j) {
v4l2_scaling_matrix.scaling_list_4x4[i][j] = pps->scaling_list4x4[i][j];
}
}
for (size_t i = 0; i < arraysize(v4l2_scaling_matrix.scaling_list_8x8); ++i) {
for (size_t j = 0; j < arraysize(v4l2_scaling_matrix.scaling_list_8x8[i]);
++j) {
v4l2_scaling_matrix.scaling_list_8x8[i][j] = pps->scaling_list8x8[i][j];
}
}
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_MPEG_VIDEO_H264_SCALING_MATRIX;
ctrl.size = sizeof(v4l2_scaling_matrix);
ctrl.p_h264_scal_mtrx = &v4l2_scaling_matrix;
ctrls.push_back(ctrl);
scoped_refptr<V4L2DecodeSurface> dec_surface =
H264PictureToV4L2DecodeSurface(pic);
struct v4l2_ext_controls ext_ctrls;
memset(&ext_ctrls, 0, sizeof(ext_ctrls));
ext_ctrls.count = ctrls.size();
ext_ctrls.controls = &ctrls[0];
ext_ctrls.config_store = dec_surface->config_store();
v4l2_dec_->SubmitExtControls(&ext_ctrls);
H264PictureListToDPBIndicesList(ref_pic_listp0,
v4l2_decode_param_.ref_pic_list_p0);
H264PictureListToDPBIndicesList(ref_pic_listb0,
v4l2_decode_param_.ref_pic_list_b0);
H264PictureListToDPBIndicesList(ref_pic_listb1,
v4l2_decode_param_.ref_pic_list_b1);
std::vector<scoped_refptr<V4L2DecodeSurface>> ref_surfaces;
H264DPBToV4L2DPB(dpb, &ref_surfaces);
dec_surface->SetReferenceSurfaces(ref_surfaces);
return true;
}
bool V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::SubmitSlice(
const H264PPS* pps,
const H264SliceHeader* slice_hdr,
const H264Picture::Vector& ref_pic_list0,
const H264Picture::Vector& ref_pic_list1,
const scoped_refptr<H264Picture>& pic,
const uint8_t* data,
size_t size) {
if (num_slices_ == kMaxSlices) {
LOGF(ERROR) << "Over limit of supported slices per frame";
return false;
}
struct v4l2_ctrl_h264_slice_param& v4l2_slice_param =
v4l2_slice_params_[num_slices_++];
memset(&v4l2_slice_param, 0, sizeof(v4l2_slice_param));
v4l2_slice_param.size = size;
#define SHDR_TO_V4L2SPARM(a) v4l2_slice_param.a = slice_hdr->a
SHDR_TO_V4L2SPARM(header_bit_size);
SHDR_TO_V4L2SPARM(first_mb_in_slice);
SHDR_TO_V4L2SPARM(slice_type);
SHDR_TO_V4L2SPARM(pic_parameter_set_id);
SHDR_TO_V4L2SPARM(colour_plane_id);
SHDR_TO_V4L2SPARM(frame_num);
SHDR_TO_V4L2SPARM(idr_pic_id);
SHDR_TO_V4L2SPARM(pic_order_cnt_lsb);
SHDR_TO_V4L2SPARM(delta_pic_order_cnt_bottom);
SHDR_TO_V4L2SPARM(delta_pic_order_cnt0);
SHDR_TO_V4L2SPARM(delta_pic_order_cnt1);
SHDR_TO_V4L2SPARM(redundant_pic_cnt);
SHDR_TO_V4L2SPARM(dec_ref_pic_marking_bit_size);
SHDR_TO_V4L2SPARM(cabac_init_idc);
SHDR_TO_V4L2SPARM(slice_qp_delta);
SHDR_TO_V4L2SPARM(slice_qs_delta);
SHDR_TO_V4L2SPARM(disable_deblocking_filter_idc);
SHDR_TO_V4L2SPARM(slice_alpha_c0_offset_div2);
SHDR_TO_V4L2SPARM(slice_beta_offset_div2);
SHDR_TO_V4L2SPARM(num_ref_idx_l0_active_minus1);
SHDR_TO_V4L2SPARM(num_ref_idx_l1_active_minus1);
SHDR_TO_V4L2SPARM(pic_order_cnt_bit_size);
#undef SHDR_TO_V4L2SPARM
#define SET_V4L2_SPARM_FLAG_IF(cond, flag) \
v4l2_slice_param.flags |= ((slice_hdr->cond) ? (flag) : 0)
SET_V4L2_SPARM_FLAG_IF(field_pic_flag, V4L2_SLICE_FLAG_FIELD_PIC);
SET_V4L2_SPARM_FLAG_IF(bottom_field_flag, V4L2_SLICE_FLAG_BOTTOM_FIELD);
SET_V4L2_SPARM_FLAG_IF(direct_spatial_mv_pred_flag,
V4L2_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED);
SET_V4L2_SPARM_FLAG_IF(sp_for_switch_flag, V4L2_SLICE_FLAG_SP_FOR_SWITCH);
#undef SET_V4L2_SPARM_FLAG_IF
struct v4l2_h264_pred_weight_table* pred_weight_table =
&v4l2_slice_param.pred_weight_table;
if (((slice_hdr->IsPSlice() || slice_hdr->IsSPSlice()) &&
pps->weighted_pred_flag) ||
(slice_hdr->IsBSlice() && pps->weighted_bipred_idc == 1)) {
pred_weight_table->luma_log2_weight_denom =
slice_hdr->luma_log2_weight_denom;
pred_weight_table->chroma_log2_weight_denom =
slice_hdr->chroma_log2_weight_denom;
struct v4l2_h264_weight_factors* factorsl0 =
&pred_weight_table->weight_factors[0];
for (int i = 0; i < 32; ++i) {
factorsl0->luma_weight[i] =
slice_hdr->pred_weight_table_l0.luma_weight[i];
factorsl0->luma_offset[i] =
slice_hdr->pred_weight_table_l0.luma_offset[i];
for (int j = 0; j < 2; ++j) {
factorsl0->chroma_weight[i][j] =
slice_hdr->pred_weight_table_l0.chroma_weight[i][j];
factorsl0->chroma_offset[i][j] =
slice_hdr->pred_weight_table_l0.chroma_offset[i][j];
}
}
if (slice_hdr->IsBSlice()) {
struct v4l2_h264_weight_factors* factorsl1 =
&pred_weight_table->weight_factors[1];
for (int i = 0; i < 32; ++i) {
factorsl1->luma_weight[i] =
slice_hdr->pred_weight_table_l1.luma_weight[i];
factorsl1->luma_offset[i] =
slice_hdr->pred_weight_table_l1.luma_offset[i];
for (int j = 0; j < 2; ++j) {
factorsl1->chroma_weight[i][j] =
slice_hdr->pred_weight_table_l1.chroma_weight[i][j];
factorsl1->chroma_offset[i][j] =
slice_hdr->pred_weight_table_l1.chroma_offset[i][j];
}
}
}
}
H264PictureListToDPBIndicesList(ref_pic_list0,
v4l2_slice_param.ref_pic_list0);
H264PictureListToDPBIndicesList(ref_pic_list1,
v4l2_slice_param.ref_pic_list1);
scoped_refptr<V4L2DecodeSurface> dec_surface =
H264PictureToV4L2DecodeSurface(pic);
v4l2_decode_param_.nal_ref_idc = slice_hdr->nal_ref_idc;
// TODO(posciak): Don't add start code back here, but have it passed from
// the parser.
size_t data_copy_size = size + 3;
std::unique_ptr<uint8_t[]> data_copy(new uint8_t[data_copy_size]);
memset(data_copy.get(), 0, data_copy_size);
data_copy[2] = 0x01;
memcpy(data_copy.get() + 3, data, size);
return v4l2_dec_->SubmitSlice(dec_surface->input_record(), data_copy.get(),
data_copy_size);
}
bool V4L2SliceVideoDecodeAccelerator::SubmitSlice(int index,
const uint8_t* data,
size_t size) {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
InputRecord& input_record = input_buffer_map_[index];
if (input_record.bytes_used + size > input_record.length) {
DVLOGF(1) << "Input buffer too small";
return false;
}
memcpy(static_cast<uint8_t*>(input_record.address) + input_record.bytes_used,
data, size);
input_record.bytes_used += size;
return true;
}
bool V4L2SliceVideoDecodeAccelerator::SubmitExtControls(
struct v4l2_ext_controls* ext_ctrls) {
DCHECK_GT(ext_ctrls->config_store, 0u);
IOCTL_OR_ERROR_RETURN_FALSE(VIDIOC_S_EXT_CTRLS, ext_ctrls);
return true;
}
bool V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::SubmitDecode(
const scoped_refptr<H264Picture>& pic) {
scoped_refptr<V4L2DecodeSurface> dec_surface =
H264PictureToV4L2DecodeSurface(pic);
v4l2_decode_param_.num_slices = num_slices_;
v4l2_decode_param_.idr_pic_flag = pic->idr;
v4l2_decode_param_.top_field_order_cnt = pic->top_field_order_cnt;
v4l2_decode_param_.bottom_field_order_cnt = pic->bottom_field_order_cnt;
struct v4l2_ext_control ctrl;
std::vector<struct v4l2_ext_control> ctrls;
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_MPEG_VIDEO_H264_SLICE_PARAM;
ctrl.size = sizeof(v4l2_slice_params_);
ctrl.p_h264_slice_param = v4l2_slice_params_;
ctrls.push_back(ctrl);
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_MPEG_VIDEO_H264_DECODE_PARAM;
ctrl.size = sizeof(v4l2_decode_param_);
ctrl.p_h264_decode_param = &v4l2_decode_param_;
ctrls.push_back(ctrl);
struct v4l2_ext_controls ext_ctrls;
memset(&ext_ctrls, 0, sizeof(ext_ctrls));
ext_ctrls.count = ctrls.size();
ext_ctrls.controls = &ctrls[0];
ext_ctrls.config_store = dec_surface->config_store();
v4l2_dec_->SubmitExtControls(&ext_ctrls);
Reset();
v4l2_dec_->DecodeSurface(dec_surface);
return true;
}
bool V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::OutputPicture(
const scoped_refptr<H264Picture>& pic) {
scoped_refptr<V4L2DecodeSurface> dec_surface =
H264PictureToV4L2DecodeSurface(pic);
v4l2_dec_->SurfaceReady(dec_surface);
return true;
}
void V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::Reset() {
num_slices_ = 0;
memset(&v4l2_decode_param_, 0, sizeof(v4l2_decode_param_));
memset(&v4l2_slice_params_, 0, sizeof(v4l2_slice_params_));
}
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
V4L2SliceVideoDecodeAccelerator::V4L2H264Accelerator::
H264PictureToV4L2DecodeSurface(const scoped_refptr<H264Picture>& pic) {
V4L2H264Picture* v4l2_pic = pic->AsV4L2H264Picture();
CHECK(v4l2_pic);
return v4l2_pic->dec_surface();
}
V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator::V4L2VP8Accelerator(
V4L2SliceVideoDecodeAccelerator* v4l2_dec)
: v4l2_dec_(v4l2_dec) {
DCHECK(v4l2_dec_);
}
V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator::~V4L2VP8Accelerator() {}
scoped_refptr<VP8Picture>
V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator::CreateVP8Picture() {
scoped_refptr<V4L2DecodeSurface> dec_surface = v4l2_dec_->CreateSurface();
if (!dec_surface)
return nullptr;
return new V4L2VP8Picture(dec_surface);
}
#define ARRAY_MEMCPY_CHECKED(to, from) \
do { \
static_assert(sizeof(to) == sizeof(from), \
#from " and " #to " arrays must be of same size"); \
memcpy(to, from, sizeof(to)); \
} while (0)
static void FillV4L2SegmentationHeader(
const Vp8SegmentationHeader& vp8_sgmnt_hdr,
struct v4l2_vp8_sgmnt_hdr* v4l2_sgmnt_hdr) {
#define SET_V4L2_SGMNT_HDR_FLAG_IF(cond, flag) \
v4l2_sgmnt_hdr->flags |= ((vp8_sgmnt_hdr.cond) ? (flag) : 0)
SET_V4L2_SGMNT_HDR_FLAG_IF(segmentation_enabled,
V4L2_VP8_SEGMNT_HDR_FLAG_ENABLED);
SET_V4L2_SGMNT_HDR_FLAG_IF(update_mb_segmentation_map,
V4L2_VP8_SEGMNT_HDR_FLAG_UPDATE_MAP);
SET_V4L2_SGMNT_HDR_FLAG_IF(update_segment_feature_data,
V4L2_VP8_SEGMNT_HDR_FLAG_UPDATE_FEATURE_DATA);
#undef SET_V4L2_SPARM_FLAG_IF
v4l2_sgmnt_hdr->segment_feature_mode = vp8_sgmnt_hdr.segment_feature_mode;
ARRAY_MEMCPY_CHECKED(v4l2_sgmnt_hdr->quant_update,
vp8_sgmnt_hdr.quantizer_update_value);
ARRAY_MEMCPY_CHECKED(v4l2_sgmnt_hdr->lf_update,
vp8_sgmnt_hdr.lf_update_value);
ARRAY_MEMCPY_CHECKED(v4l2_sgmnt_hdr->segment_probs,
vp8_sgmnt_hdr.segment_prob);
}
static void FillV4L2LoopfilterHeader(
const Vp8LoopFilterHeader& vp8_loopfilter_hdr,
struct v4l2_vp8_loopfilter_hdr* v4l2_lf_hdr) {
#define SET_V4L2_LF_HDR_FLAG_IF(cond, flag) \
v4l2_lf_hdr->flags |= ((vp8_loopfilter_hdr.cond) ? (flag) : 0)
SET_V4L2_LF_HDR_FLAG_IF(loop_filter_adj_enable, V4L2_VP8_LF_HDR_ADJ_ENABLE);
SET_V4L2_LF_HDR_FLAG_IF(mode_ref_lf_delta_update,
V4L2_VP8_LF_HDR_DELTA_UPDATE);
#undef SET_V4L2_SGMNT_HDR_FLAG_IF
#define LF_HDR_TO_V4L2_LF_HDR(a) v4l2_lf_hdr->a = vp8_loopfilter_hdr.a;
LF_HDR_TO_V4L2_LF_HDR(type);
LF_HDR_TO_V4L2_LF_HDR(level);
LF_HDR_TO_V4L2_LF_HDR(sharpness_level);
#undef LF_HDR_TO_V4L2_LF_HDR
ARRAY_MEMCPY_CHECKED(v4l2_lf_hdr->ref_frm_delta_magnitude,
vp8_loopfilter_hdr.ref_frame_delta);
ARRAY_MEMCPY_CHECKED(v4l2_lf_hdr->mb_mode_delta_magnitude,
vp8_loopfilter_hdr.mb_mode_delta);
}
static void FillV4L2QuantizationHeader(
const Vp8QuantizationHeader& vp8_quant_hdr,
struct v4l2_vp8_quantization_hdr* v4l2_quant_hdr) {
v4l2_quant_hdr->y_ac_qi = vp8_quant_hdr.y_ac_qi;
v4l2_quant_hdr->y_dc_delta = vp8_quant_hdr.y_dc_delta;
v4l2_quant_hdr->y2_dc_delta = vp8_quant_hdr.y2_dc_delta;
v4l2_quant_hdr->y2_ac_delta = vp8_quant_hdr.y2_ac_delta;
v4l2_quant_hdr->uv_dc_delta = vp8_quant_hdr.uv_dc_delta;
v4l2_quant_hdr->uv_ac_delta = vp8_quant_hdr.uv_ac_delta;
}
static void FillV4L2EntropyHeader(
const Vp8EntropyHeader& vp8_entropy_hdr,
struct v4l2_vp8_entropy_hdr* v4l2_entropy_hdr) {
ARRAY_MEMCPY_CHECKED(v4l2_entropy_hdr->coeff_probs,
vp8_entropy_hdr.coeff_probs);
ARRAY_MEMCPY_CHECKED(v4l2_entropy_hdr->y_mode_probs,
vp8_entropy_hdr.y_mode_probs);
ARRAY_MEMCPY_CHECKED(v4l2_entropy_hdr->uv_mode_probs,
vp8_entropy_hdr.uv_mode_probs);
ARRAY_MEMCPY_CHECKED(v4l2_entropy_hdr->mv_probs, vp8_entropy_hdr.mv_probs);
}
bool V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator::SubmitDecode(
const scoped_refptr<VP8Picture>& pic,
const Vp8FrameHeader* frame_hdr,
const scoped_refptr<VP8Picture>& last_frame,
const scoped_refptr<VP8Picture>& golden_frame,
const scoped_refptr<VP8Picture>& alt_frame) {
struct v4l2_ctrl_vp8_frame_hdr v4l2_frame_hdr;
memset(&v4l2_frame_hdr, 0, sizeof(v4l2_frame_hdr));
#define FHDR_TO_V4L2_FHDR(a) v4l2_frame_hdr.a = frame_hdr->a
FHDR_TO_V4L2_FHDR(key_frame);
FHDR_TO_V4L2_FHDR(version);
FHDR_TO_V4L2_FHDR(width);
FHDR_TO_V4L2_FHDR(horizontal_scale);
FHDR_TO_V4L2_FHDR(height);
FHDR_TO_V4L2_FHDR(vertical_scale);
FHDR_TO_V4L2_FHDR(sign_bias_golden);
FHDR_TO_V4L2_FHDR(sign_bias_alternate);
FHDR_TO_V4L2_FHDR(prob_skip_false);
FHDR_TO_V4L2_FHDR(prob_intra);
FHDR_TO_V4L2_FHDR(prob_last);
FHDR_TO_V4L2_FHDR(prob_gf);
FHDR_TO_V4L2_FHDR(bool_dec_range);
FHDR_TO_V4L2_FHDR(bool_dec_value);
FHDR_TO_V4L2_FHDR(bool_dec_count);
#undef FHDR_TO_V4L2_FHDR
#define SET_V4L2_FRM_HDR_FLAG_IF(cond, flag) \
v4l2_frame_hdr.flags |= ((frame_hdr->cond) ? (flag) : 0)
SET_V4L2_FRM_HDR_FLAG_IF(is_experimental,
V4L2_VP8_FRAME_HDR_FLAG_EXPERIMENTAL);
SET_V4L2_FRM_HDR_FLAG_IF(show_frame, V4L2_VP8_FRAME_HDR_FLAG_SHOW_FRAME);
SET_V4L2_FRM_HDR_FLAG_IF(mb_no_skip_coeff,
V4L2_VP8_FRAME_HDR_FLAG_MB_NO_SKIP_COEFF);
#undef SET_V4L2_FRM_HDR_FLAG_IF
FillV4L2SegmentationHeader(frame_hdr->segmentation_hdr,
&v4l2_frame_hdr.sgmnt_hdr);
FillV4L2LoopfilterHeader(frame_hdr->loopfilter_hdr, &v4l2_frame_hdr.lf_hdr);
FillV4L2QuantizationHeader(frame_hdr->quantization_hdr,
&v4l2_frame_hdr.quant_hdr);
FillV4L2EntropyHeader(frame_hdr->entropy_hdr, &v4l2_frame_hdr.entropy_hdr);
v4l2_frame_hdr.first_part_size =
base::checked_cast<__u32>(frame_hdr->first_part_size);
v4l2_frame_hdr.first_part_offset =
base::checked_cast<__u32>(frame_hdr->first_part_offset);
v4l2_frame_hdr.macroblock_bit_offset =
base::checked_cast<__u32>(frame_hdr->macroblock_bit_offset);
v4l2_frame_hdr.num_dct_parts = frame_hdr->num_of_dct_partitions;
static_assert(arraysize(v4l2_frame_hdr.dct_part_sizes) ==
arraysize(frame_hdr->dct_partition_sizes),
"DCT partition size arrays must have equal number of elements");
for (size_t i = 0; i < frame_hdr->num_of_dct_partitions &&
i < arraysize(v4l2_frame_hdr.dct_part_sizes);
++i)
v4l2_frame_hdr.dct_part_sizes[i] = frame_hdr->dct_partition_sizes[i];
scoped_refptr<V4L2DecodeSurface> dec_surface =
VP8PictureToV4L2DecodeSurface(pic);
std::vector<scoped_refptr<V4L2DecodeSurface>> ref_surfaces;
if (last_frame) {
scoped_refptr<V4L2DecodeSurface> last_frame_surface =
VP8PictureToV4L2DecodeSurface(last_frame);
v4l2_frame_hdr.last_frame = last_frame_surface->output_record();
ref_surfaces.push_back(last_frame_surface);
} else {
v4l2_frame_hdr.last_frame = VIDEO_MAX_FRAME;
}
if (golden_frame) {
scoped_refptr<V4L2DecodeSurface> golden_frame_surface =
VP8PictureToV4L2DecodeSurface(golden_frame);
v4l2_frame_hdr.golden_frame = golden_frame_surface->output_record();
ref_surfaces.push_back(golden_frame_surface);
} else {
v4l2_frame_hdr.golden_frame = VIDEO_MAX_FRAME;
}
if (alt_frame) {
scoped_refptr<V4L2DecodeSurface> alt_frame_surface =
VP8PictureToV4L2DecodeSurface(alt_frame);
v4l2_frame_hdr.alt_frame = alt_frame_surface->output_record();
ref_surfaces.push_back(alt_frame_surface);
} else {
v4l2_frame_hdr.alt_frame = VIDEO_MAX_FRAME;
}
struct v4l2_ext_control ctrl;
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_MPEG_VIDEO_VP8_FRAME_HDR;
ctrl.size = sizeof(v4l2_frame_hdr);
ctrl.p_vp8_frame_hdr = &v4l2_frame_hdr;
struct v4l2_ext_controls ext_ctrls;
memset(&ext_ctrls, 0, sizeof(ext_ctrls));
ext_ctrls.count = 1;
ext_ctrls.controls = &ctrl;
ext_ctrls.config_store = dec_surface->config_store();
if (!v4l2_dec_->SubmitExtControls(&ext_ctrls))
return false;
dec_surface->SetReferenceSurfaces(ref_surfaces);
if (!v4l2_dec_->SubmitSlice(dec_surface->input_record(), frame_hdr->data,
frame_hdr->frame_size))
return false;
v4l2_dec_->DecodeSurface(dec_surface);
return true;
}
bool V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator::OutputPicture(
const scoped_refptr<VP8Picture>& pic) {
scoped_refptr<V4L2DecodeSurface> dec_surface =
VP8PictureToV4L2DecodeSurface(pic);
v4l2_dec_->SurfaceReady(dec_surface);
return true;
}
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
V4L2SliceVideoDecodeAccelerator::V4L2VP8Accelerator::
VP8PictureToV4L2DecodeSurface(const scoped_refptr<VP8Picture>& pic) {
V4L2VP8Picture* v4l2_pic = pic->AsV4L2VP8Picture();
CHECK(v4l2_pic);
return v4l2_pic->dec_surface();
}
void V4L2SliceVideoDecodeAccelerator::DecodeSurface(
const scoped_refptr<V4L2DecodeSurface>& dec_surface) {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DVLOGF(3) << "Submitting decode for surface: " << dec_surface->ToString();
Enqueue(dec_surface);
}
void V4L2SliceVideoDecodeAccelerator::SurfaceReady(
const scoped_refptr<V4L2DecodeSurface>& dec_surface) {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
decoder_display_queue_.push(dec_surface);
TryOutputSurfaces();
}
void V4L2SliceVideoDecodeAccelerator::TryOutputSurfaces() {
while (!decoder_display_queue_.empty()) {
scoped_refptr<V4L2DecodeSurface> dec_surface =
decoder_display_queue_.front();
if (!dec_surface->decoded())
break;
decoder_display_queue_.pop();
OutputSurface(dec_surface);
}
}
void V4L2SliceVideoDecodeAccelerator::OutputSurface(
const scoped_refptr<V4L2DecodeSurface>& dec_surface) {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
OutputRecord& output_record =
output_buffer_map_[dec_surface->output_record()];
bool inserted =
surfaces_at_display_
.insert(std::make_pair(output_record.picture_id, dec_surface))
.second;
DCHECK(inserted);
DCHECK(!output_record.at_client);
DCHECK(!output_record.at_device);
DCHECK_NE(output_record.picture_id, -1);
output_record.at_client = true;
// TODO(posciak): Use visible size from decoder here instead
// (crbug.com/402760). Passing (0, 0) results in the client using the
// visible size extracted from the container instead.
Picture picture(output_record.picture_id, dec_surface->bitstream_id(),
gfx::Rect(0, 0), false);
DVLOGF(3) << dec_surface->ToString()
<< ", bitstream_id: " << picture.bitstream_buffer_id()
<< ", picture_id: " << picture.picture_buffer_id();
pending_picture_ready_.push(PictureRecord(output_record.cleared, picture));
SendPictureReady();
output_record.cleared = true;
}
scoped_refptr<V4L2SliceVideoDecodeAccelerator::V4L2DecodeSurface>
V4L2SliceVideoDecodeAccelerator::CreateSurface() {
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_EQ(state_, kDecoding);
if (free_input_buffers_.empty() || free_output_buffers_.empty())
return nullptr;
int input = free_input_buffers_.front();
free_input_buffers_.pop_front();
int output = free_output_buffers_.front();
free_output_buffers_.pop_front();
InputRecord& input_record = input_buffer_map_[input];
DCHECK_EQ(input_record.bytes_used, 0u);
DCHECK_EQ(input_record.input_id, -1);
DCHECK(decoder_current_bitstream_buffer_ != nullptr);
input_record.input_id = decoder_current_bitstream_buffer_->input_id;
scoped_refptr<V4L2DecodeSurface> dec_surface = new V4L2DecodeSurface(
decoder_current_bitstream_buffer_->input_id, input, output,
base::Bind(&V4L2SliceVideoDecodeAccelerator::ReuseOutputBuffer,
base::Unretained(this)));
DVLOGF(4) << "Created surface " << input << " -> " << output;
return dec_surface;
}
void V4L2SliceVideoDecodeAccelerator::SendPictureReady() {
DVLOGF(3);
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
bool resetting_or_flushing = (decoder_resetting_ || decoder_flushing_);
while (!pending_picture_ready_.empty()) {
bool cleared = pending_picture_ready_.front().cleared;
const Picture& picture = pending_picture_ready_.front().picture;
if (cleared && picture_clearing_count_ == 0) {
DVLOGF(4) << "Posting picture ready to decode task runner for: "
<< picture.picture_buffer_id();
// This picture is cleared. It can be posted to a thread different than
// the main GPU thread to reduce latency. This should be the case after
// all pictures are cleared at the beginning.
decode_task_runner_->PostTask(
FROM_HERE,
base::Bind(&Client::PictureReady, decode_client_, picture));
pending_picture_ready_.pop();
} else if (!cleared || resetting_or_flushing) {
DVLOGF(3) << "cleared=" << pending_picture_ready_.front().cleared
<< ", decoder_resetting_=" << decoder_resetting_
<< ", decoder_flushing_=" << decoder_flushing_
<< ", picture_clearing_count_=" << picture_clearing_count_;
DVLOGF(4) << "Posting picture ready to GPU for: "
<< picture.picture_buffer_id();
// If the picture is not cleared, post it to the child thread because it
// has to be cleared in the child thread. A picture only needs to be
// cleared once. If the decoder is resetting or flushing, send all
// pictures to ensure PictureReady arrive before reset or flush done.
child_task_runner_->PostTaskAndReply(
FROM_HERE, base::Bind(&Client::PictureReady, client_, picture),
// Unretained is safe. If Client::PictureReady gets to run, |this| is
// alive. Destroy() will wait the decode thread to finish.
base::Bind(&V4L2SliceVideoDecodeAccelerator::PictureCleared,
base::Unretained(this)));
picture_clearing_count_++;
pending_picture_ready_.pop();
} else {
// This picture is cleared. But some pictures are about to be cleared on
// the child thread. To preserve the order, do not send this until those
// pictures are cleared.
break;
}
}
}
void V4L2SliceVideoDecodeAccelerator::PictureCleared() {
DVLOGF(3) << "clearing count=" << picture_clearing_count_;
DCHECK(decoder_thread_task_runner_->BelongsToCurrentThread());
DCHECK_GT(picture_clearing_count_, 0);
picture_clearing_count_--;
SendPictureReady();
}
bool V4L2SliceVideoDecodeAccelerator::TryToSetupDecodeOnSeparateThread(
const base::WeakPtr<Client>& decode_client,
const scoped_refptr<base::SingleThreadTaskRunner>& decode_task_runner) {
decode_client_ = decode_client;
decode_task_runner_ = decode_task_runner;
return true;
}
// static
VideoDecodeAccelerator::SupportedProfiles
V4L2SliceVideoDecodeAccelerator::GetSupportedProfiles() {
scoped_refptr<V4L2Device> device = V4L2Device::Create(V4L2Device::kDecoder);
if (!device)
return SupportedProfiles();
return device->GetSupportedDecodeProfiles(arraysize(supported_input_fourccs_),
supported_input_fourccs_);
}
} // namespace media