1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/common/gpu/media/exynos_video_encode_accelerator.h"
8 #include <linux/videodev2.h>
10 #include <sys/eventfd.h>
11 #include <sys/ioctl.h>
14 #include "base/callback.h"
15 #include "base/command_line.h"
16 #include "base/debug/trace_event.h"
17 #include "base/message_loop/message_loop_proxy.h"
18 #include "base/posix/eintr_wrapper.h"
19 #include "content/public/common/content_switches.h"
20 #include "media/base/bitstream_buffer.h"
22 #define NOTIFY_ERROR(x) \
24 SetEncoderState(kError); \
25 DLOG(ERROR) << "calling NotifyError(): " << x; \
29 #define IOCTL_OR_ERROR_RETURN(fd, type, arg) \
31 if (HANDLE_EINTR(ioctl(fd, type, arg) != 0)) { \
32 DPLOG(ERROR) << __func__ << "(): ioctl() failed: " << #type; \
33 NOTIFY_ERROR(kPlatformFailureError); \
38 #define IOCTL_OR_ERROR_RETURN_FALSE(fd, type, arg) \
40 if (HANDLE_EINTR(ioctl(fd, type, arg) != 0)) { \
41 DPLOG(ERROR) << __func__ << "(): ioctl() failed: " << #type; \
42 NOTIFY_ERROR(kPlatformFailureError); \
51 const char kExynosGscDevice[] = "/dev/gsc1";
52 const char kExynosMfcDevice[] = "/dev/mfc-enc";
54 // File descriptors we need to poll, one-bit flag for each.
60 } // anonymous namespace
62 struct ExynosVideoEncodeAccelerator::BitstreamBufferRef {
63 BitstreamBufferRef(int32 id, scoped_ptr<base::SharedMemory> shm, size_t size)
64 : id(id), shm(shm.Pass()), size(size) {}
66 const scoped_ptr<base::SharedMemory> shm;
71 ExynosVideoEncodeAccelerator::GscInputRecord::GscInputRecord()
74 ExynosVideoEncodeAccelerator::GscOutputRecord::GscOutputRecord()
75 : at_device(false), mfc_input(-1) {}
77 ExynosVideoEncodeAccelerator::MfcInputRecord::MfcInputRecord()
82 ExynosVideoEncodeAccelerator::MfcOutputRecord::MfcOutputRecord()
83 : at_device(false), address(NULL), length(0) {}
85 ExynosVideoEncodeAccelerator::ExynosVideoEncodeAccelerator(
86 media::VideoEncodeAccelerator::Client* client)
87 : child_message_loop_proxy_(base::MessageLoopProxy::current()),
88 weak_this_ptr_factory_(this),
89 weak_this_(weak_this_ptr_factory_.GetWeakPtr()),
90 client_ptr_factory_(client),
91 client_(client_ptr_factory_.GetWeakPtr()),
92 encoder_thread_("ExynosEncoderThread"),
93 encoder_state_(kUninitialized),
94 output_buffer_byte_size_(0),
95 stream_header_size_(0),
96 input_format_fourcc_(0),
97 output_format_fourcc_(0),
99 gsc_input_streamon_(false),
100 gsc_input_buffer_queued_count_(0),
101 gsc_output_streamon_(false),
102 gsc_output_buffer_queued_count_(0),
104 mfc_input_streamon_(false),
105 mfc_input_buffer_queued_count_(0),
106 mfc_output_streamon_(false),
107 mfc_output_buffer_queued_count_(0),
108 device_poll_thread_("ExynosEncoderDevicePollThread"),
109 device_poll_interrupt_fd_(-1) {
113 ExynosVideoEncodeAccelerator::~ExynosVideoEncodeAccelerator() {
114 DCHECK(!encoder_thread_.IsRunning());
115 DCHECK(!device_poll_thread_.IsRunning());
117 if (device_poll_interrupt_fd_ != -1) {
118 HANDLE_EINTR(close(device_poll_interrupt_fd_));
119 device_poll_interrupt_fd_ = -1;
122 DestroyGscInputBuffers();
123 DestroyGscOutputBuffers();
124 HANDLE_EINTR(close(gsc_fd_));
128 DestroyMfcInputBuffers();
129 DestroyMfcOutputBuffers();
130 HANDLE_EINTR(close(mfc_fd_));
135 void ExynosVideoEncodeAccelerator::Initialize(
136 media::VideoFrame::Format input_format,
137 const gfx::Size& input_visible_size,
138 media::VideoCodecProfile output_profile,
139 uint32 initial_bitrate) {
140 DVLOG(3) << "Initialize(): input_format=" << input_format
141 << ", input_visible_size=" << input_visible_size.ToString()
142 << ", output_profile=" << output_profile
143 << ", initial_bitrate=" << initial_bitrate;
145 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
146 DCHECK_EQ(encoder_state_, kUninitialized);
148 input_visible_size_ = input_visible_size;
149 input_allocated_size_.SetSize((input_visible_size_.width() + 0xF) & ~0xF,
150 (input_visible_size_.height() + 0xF) & ~0xF);
151 converted_visible_size_.SetSize((input_visible_size_.width() + 0x1) & ~0x1,
152 (input_visible_size_.height() + 0x1) & ~0x1);
153 converted_allocated_size_.SetSize(
154 (converted_visible_size_.width() + 0xF) & ~0xF,
155 (converted_visible_size_.height() + 0xF) & ~0xF);
156 output_visible_size_ = converted_visible_size_;
158 switch (input_format) {
159 case media::VideoFrame::RGB32:
160 input_format_fourcc_ = V4L2_PIX_FMT_RGB32;
162 case media::VideoFrame::I420:
163 input_format_fourcc_ = V4L2_PIX_FMT_YUV420M;
166 NOTIFY_ERROR(kInvalidArgumentError);
170 if (output_profile >= media::H264PROFILE_MIN &&
171 output_profile <= media::H264PROFILE_MAX) {
172 output_format_fourcc_ = V4L2_PIX_FMT_H264;
173 } else if (output_profile >= media::VP8PROFILE_MIN &&
174 output_profile <= media::VP8PROFILE_MAX) {
175 output_format_fourcc_ = V4L2_PIX_FMT_VP8;
177 NOTIFY_ERROR(kInvalidArgumentError);
181 // Open the color conversion device.
182 DVLOG(2) << "Initialize(): opening GSC device: " << kExynosGscDevice;
184 HANDLE_EINTR(open(kExynosGscDevice, O_RDWR | O_NONBLOCK | O_CLOEXEC));
186 DPLOG(ERROR) << "Initialize(): could not open GSC device: "
188 NOTIFY_ERROR(kPlatformFailureError);
192 // Capabilities check.
193 struct v4l2_capability caps;
194 memset(&caps, 0, sizeof(caps));
195 const __u32 kCapsRequired = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
196 V4L2_CAP_VIDEO_OUTPUT_MPLANE | V4L2_CAP_STREAMING;
197 IOCTL_OR_ERROR_RETURN(gsc_fd_, VIDIOC_QUERYCAP, &caps);
198 if ((caps.capabilities & kCapsRequired) != kCapsRequired) {
199 DLOG(ERROR) << "Initialize(): ioctl() failed: VIDIOC_QUERYCAP: "
200 "caps check failed: 0x" << std::hex << caps.capabilities;
201 NOTIFY_ERROR(kPlatformFailureError);
205 // Open the video encoder device.
206 DVLOG(2) << "Initialize(): opening MFC device: " << kExynosMfcDevice;
208 HANDLE_EINTR(open(kExynosMfcDevice, O_RDWR | O_NONBLOCK | O_CLOEXEC));
210 DPLOG(ERROR) << "Initialize(): could not open MFC device: "
212 NOTIFY_ERROR(kPlatformFailureError);
216 memset(&caps, 0, sizeof(caps));
217 IOCTL_OR_ERROR_RETURN(mfc_fd_, VIDIOC_QUERYCAP, &caps);
218 if ((caps.capabilities & kCapsRequired) != kCapsRequired) {
219 DLOG(ERROR) << "Initialize(): ioctl() failed: VIDIOC_QUERYCAP: "
220 "caps check failed: 0x" << std::hex << caps.capabilities;
221 NOTIFY_ERROR(kPlatformFailureError);
225 // Create the interrupt fd.
226 DCHECK_EQ(device_poll_interrupt_fd_, -1);
227 device_poll_interrupt_fd_ = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
228 if (device_poll_interrupt_fd_ == -1) {
229 DPLOG(ERROR) << "Initialize(): eventfd() failed";
230 NOTIFY_ERROR(kPlatformFailureError);
235 << "Initialize(): input_visible_size_=" << input_visible_size_.ToString()
236 << ", input_allocated_size_=" << input_allocated_size_.ToString()
237 << ", converted_visible_size_=" << converted_visible_size_.ToString()
238 << ", converted_allocated_size_=" << converted_allocated_size_.ToString()
239 << ", output_visible_size_=" << output_visible_size_.ToString();
241 if (!CreateGscInputBuffers() || !CreateGscOutputBuffers())
244 // MFC setup for encoding is rather particular in ordering:
246 // 1. Format (VIDIOC_S_FMT) set first on OUTPUT and CAPTURE queues.
247 // 2. VIDIOC_REQBUFS, VIDIOC_QBUF, and VIDIOC_STREAMON on CAPTURE queue.
248 // 3. VIDIOC_REQBUFS (and later VIDIOC_QBUF and VIDIOC_STREAMON) on OUTPUT
251 // Unfortunately, we cannot do (3) in Initialize() here since we have no
252 // buffers to QBUF in step (2) until the client has provided output buffers
253 // through UseOutputBitstreamBuffer(). So, we just do (1), and the
254 // VIDIOC_REQBUFS part of (2) here. The rest is done the first time we get
255 // a UseOutputBitstreamBuffer() callback.
257 if (!SetMfcFormats())
260 if (!InitMfcControls())
263 // VIDIOC_REQBUFS on CAPTURE queue.
264 if (!CreateMfcOutputBuffers())
268 if (!encoder_thread_.Start()) {
269 DLOG(ERROR) << "Initialize(): encoder thread failed to start";
270 NOTIFY_ERROR(kPlatformFailureError);
274 RequestEncodingParametersChange(initial_bitrate, kInitialFramerate);
276 SetEncoderState(kInitialized);
278 child_message_loop_proxy_->PostTask(
279 FROM_HERE, base::Bind(&Client::NotifyInitializeDone, client_));
281 child_message_loop_proxy_->PostTask(
283 base::Bind(&Client::RequireBitstreamBuffers,
285 gsc_input_buffer_map_.size(),
286 input_allocated_size_,
287 output_buffer_byte_size_));
290 void ExynosVideoEncodeAccelerator::Encode(
291 const scoped_refptr<media::VideoFrame>& frame,
292 bool force_keyframe) {
293 DVLOG(3) << "Encode(): force_keyframe=" << force_keyframe;
294 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
296 encoder_thread_.message_loop()->PostTask(
298 base::Bind(&ExynosVideoEncodeAccelerator::EncodeTask,
299 base::Unretained(this),
304 void ExynosVideoEncodeAccelerator::UseOutputBitstreamBuffer(
305 const media::BitstreamBuffer& buffer) {
306 DVLOG(3) << "UseOutputBitstreamBuffer(): id=" << buffer.id();
307 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
309 if (buffer.size() < output_buffer_byte_size_) {
310 NOTIFY_ERROR(kInvalidArgumentError);
314 scoped_ptr<base::SharedMemory> shm(
315 new base::SharedMemory(buffer.handle(), false));
316 if (!shm->Map(buffer.size())) {
317 NOTIFY_ERROR(kPlatformFailureError);
321 scoped_ptr<BitstreamBufferRef> buffer_ref(
322 new BitstreamBufferRef(buffer.id(), shm.Pass(), buffer.size()));
323 encoder_thread_.message_loop()->PostTask(
325 base::Bind(&ExynosVideoEncodeAccelerator::UseOutputBitstreamBufferTask,
326 base::Unretained(this),
327 base::Passed(&buffer_ref)));
330 void ExynosVideoEncodeAccelerator::RequestEncodingParametersChange(
333 DVLOG(3) << "RequestEncodingParametersChange(): bitrate=" << bitrate
334 << ", framerate=" << framerate;
335 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
337 encoder_thread_.message_loop()->PostTask(
340 &ExynosVideoEncodeAccelerator::RequestEncodingParametersChangeTask,
341 base::Unretained(this),
346 void ExynosVideoEncodeAccelerator::Destroy() {
347 DVLOG(3) << "Destroy()";
348 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
350 // We're destroying; cancel all callbacks.
351 client_ptr_factory_.InvalidateWeakPtrs();
353 // If the encoder thread is running, destroy using posted task.
354 if (encoder_thread_.IsRunning()) {
355 encoder_thread_.message_loop()->PostTask(
357 base::Bind(&ExynosVideoEncodeAccelerator::DestroyTask,
358 base::Unretained(this)));
359 // DestroyTask() will put the encoder into kError state and cause all tasks
361 encoder_thread_.Stop();
363 // Otherwise, call the destroy task directly.
367 // Set to kError state just in case.
368 SetEncoderState(kError);
374 std::vector<media::VideoEncodeAccelerator::SupportedProfile>
375 ExynosVideoEncodeAccelerator::GetSupportedProfiles() {
376 std::vector<SupportedProfile> profiles;
378 SupportedProfile profile;
380 const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
381 if (cmd_line->HasSwitch(switches::kEnableWebRtcHWVp8Encoding)) {
382 profile.profile = media::VP8PROFILE_MAIN;
383 profile.max_resolution.SetSize(1920, 1088);
384 profile.max_framerate.numerator = 30;
385 profile.max_framerate.denominator = 1;
386 profiles.push_back(profile);
388 profile.profile = media::H264PROFILE_MAIN;
389 profile.max_resolution.SetSize(1920, 1088);
390 profile.max_framerate.numerator = 30;
391 profile.max_framerate.denominator = 1;
392 profiles.push_back(profile);
398 void ExynosVideoEncodeAccelerator::EncodeTask(
399 const scoped_refptr<media::VideoFrame>& frame, bool force_keyframe) {
400 DVLOG(3) << "EncodeTask(): force_keyframe=" << force_keyframe;
401 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
402 DCHECK_NE(encoder_state_, kUninitialized);
404 if (encoder_state_ == kError) {
405 DVLOG(2) << "EncodeTask(): early out: kError state";
409 encoder_input_queue_.push_back(frame);
412 if (force_keyframe) {
413 // TODO(sheu): this presently makes for slightly imprecise encoding
414 // parameters updates. To precisely align the parameter updates with the
415 // incoming input frame, we should track the parameters through the GSC
416 // pipeline and only apply them when the MFC input is about to be queued.
417 struct v4l2_ext_control ctrls[1];
418 struct v4l2_ext_controls control;
419 memset(&ctrls, 0, sizeof(ctrls));
420 memset(&control, 0, sizeof(control));
421 ctrls[0].id = V4L2_CID_MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE;
422 ctrls[0].value = V4L2_MPEG_MFC51_VIDEO_FORCE_FRAME_TYPE_I_FRAME;
423 control.ctrl_class = V4L2_CTRL_CLASS_MPEG;
425 control.controls = ctrls;
426 IOCTL_OR_ERROR_RETURN(mfc_fd_, VIDIOC_S_EXT_CTRLS, &control);
430 void ExynosVideoEncodeAccelerator::UseOutputBitstreamBufferTask(
431 scoped_ptr<BitstreamBufferRef> buffer_ref) {
432 DVLOG(3) << "UseOutputBitstreamBufferTask(): id=" << buffer_ref->id;
433 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
435 encoder_output_queue_.push_back(
436 linked_ptr<BitstreamBufferRef>(buffer_ref.release()));
439 if (encoder_state_ == kInitialized) {
440 // Finish setting up our MFC OUTPUT queue. See: Initialize().
441 // VIDIOC_REQBUFS on OUTPUT queue.
442 if (!CreateMfcInputBuffers())
444 if (!StartDevicePoll())
446 encoder_state_ = kEncoding;
450 void ExynosVideoEncodeAccelerator::DestroyTask() {
451 DVLOG(3) << "DestroyTask()";
453 // DestroyTask() should run regardless of encoder_state_.
455 // Stop streaming and the device_poll_thread_.
458 // Set our state to kError, and early-out all tasks.
459 encoder_state_ = kError;
462 void ExynosVideoEncodeAccelerator::ServiceDeviceTask() {
463 DVLOG(3) << "ServiceDeviceTask()";
464 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
465 DCHECK_NE(encoder_state_, kUninitialized);
466 DCHECK_NE(encoder_state_, kInitialized);
468 if (encoder_state_ == kError) {
469 DVLOG(2) << "ServiceDeviceTask(): early out: kError state";
478 // Clear the interrupt fd.
479 if (!ClearDevicePollInterrupt())
482 unsigned int poll_fds = 0;
483 // Add GSC fd, if we should poll on it.
484 // GSC has to wait until both input and output buffers are queued.
485 if (gsc_input_buffer_queued_count_ > 0 && gsc_output_buffer_queued_count_ > 0)
486 poll_fds |= kPollGsc;
487 // Add MFC fd, if we should poll on it.
488 // MFC can be polled as soon as either input or output buffers are queued.
489 if (mfc_input_buffer_queued_count_ + mfc_output_buffer_queued_count_ > 0)
490 poll_fds |= kPollMfc;
492 // ServiceDeviceTask() should only ever be scheduled from DevicePollTask(),
494 // * device_poll_thread_ is running normally
495 // * device_poll_thread_ scheduled us, but then a DestroyTask() shut it down,
496 // in which case we're in kError state, and we should have early-outed
498 DCHECK(device_poll_thread_.message_loop());
499 // Queue the DevicePollTask() now.
500 device_poll_thread_.message_loop()->PostTask(
502 base::Bind(&ExynosVideoEncodeAccelerator::DevicePollTask,
503 base::Unretained(this),
506 DVLOG(2) << "ServiceDeviceTask(): buffer counts: ENC["
507 << encoder_input_queue_.size() << "] => GSC["
508 << gsc_free_input_buffers_.size() << "+"
509 << gsc_input_buffer_queued_count_ << "/"
510 << gsc_input_buffer_map_.size() << "->"
511 << gsc_free_output_buffers_.size() << "+"
512 << gsc_output_buffer_queued_count_ << "/"
513 << gsc_output_buffer_map_.size() << "] => "
514 << mfc_ready_input_buffers_.size() << " => MFC["
515 << mfc_free_input_buffers_.size() << "+"
516 << mfc_input_buffer_queued_count_ << "/"
517 << mfc_input_buffer_map_.size() << "->"
518 << mfc_free_output_buffers_.size() << "+"
519 << mfc_output_buffer_queued_count_ << "/"
520 << mfc_output_buffer_map_.size() << "] => OUT["
521 << encoder_output_queue_.size() << "]";
524 void ExynosVideoEncodeAccelerator::EnqueueGsc() {
525 DVLOG(3) << "EnqueueGsc()";
526 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
528 const int old_gsc_inputs_queued = gsc_input_buffer_queued_count_;
529 while (!encoder_input_queue_.empty() && !gsc_free_input_buffers_.empty()) {
530 if (!EnqueueGscInputRecord())
533 if (old_gsc_inputs_queued == 0 && gsc_input_buffer_queued_count_ != 0) {
534 // We started up a previously empty queue.
535 // Queue state changed; signal interrupt.
536 if (!SetDevicePollInterrupt())
538 // Start VIDIOC_STREAMON if we haven't yet.
539 if (!gsc_input_streamon_) {
540 __u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
541 IOCTL_OR_ERROR_RETURN(gsc_fd_, VIDIOC_STREAMON, &type);
542 gsc_input_streamon_ = true;
546 // Enqueue a GSC output, only if we need one. GSC output buffers write
547 // directly to MFC input buffers, so we'll have to check for free MFC input
549 // GSC is liable to race conditions if more than one output buffer is
550 // simultaneously enqueued, so enqueue just one.
551 if (gsc_input_buffer_queued_count_ != 0 &&
552 gsc_output_buffer_queued_count_ == 0 &&
553 !gsc_free_output_buffers_.empty() && !mfc_free_input_buffers_.empty()) {
554 const int old_gsc_outputs_queued = gsc_output_buffer_queued_count_;
555 if (!EnqueueGscOutputRecord())
557 if (old_gsc_outputs_queued == 0 && gsc_output_buffer_queued_count_ != 0) {
558 // We just started up a previously empty queue.
559 // Queue state changed; signal interrupt.
560 if (!SetDevicePollInterrupt())
562 // Start VIDIOC_STREAMON if we haven't yet.
563 if (!gsc_output_streamon_) {
564 __u32 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
565 IOCTL_OR_ERROR_RETURN(gsc_fd_, VIDIOC_STREAMON, &type);
566 gsc_output_streamon_ = true;
570 DCHECK_LE(gsc_output_buffer_queued_count_, 1);
573 void ExynosVideoEncodeAccelerator::DequeueGsc() {
574 DVLOG(3) << "DequeueGsc()";
575 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
577 // Dequeue completed GSC input (VIDEO_OUTPUT) buffers, and recycle to the free
579 struct v4l2_buffer dqbuf;
580 struct v4l2_plane planes[3];
581 while (gsc_input_buffer_queued_count_ > 0) {
582 DCHECK(gsc_input_streamon_);
583 memset(&dqbuf, 0, sizeof(dqbuf));
584 memset(&planes, 0, sizeof(planes));
585 dqbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
586 dqbuf.memory = V4L2_MEMORY_USERPTR;
587 dqbuf.m.planes = planes;
588 dqbuf.length = arraysize(planes);
589 if (HANDLE_EINTR(ioctl(gsc_fd_, VIDIOC_DQBUF, &dqbuf)) != 0) {
590 if (errno == EAGAIN) {
591 // EAGAIN if we're just out of buffers to dequeue.
594 DPLOG(ERROR) << "DequeueGsc(): ioctl() failed: VIDIOC_DQBUF";
595 NOTIFY_ERROR(kPlatformFailureError);
598 GscInputRecord& input_record = gsc_input_buffer_map_[dqbuf.index];
599 DCHECK(input_record.at_device);
600 DCHECK(input_record.frame.get());
601 input_record.at_device = false;
602 input_record.frame = NULL;
603 gsc_free_input_buffers_.push_back(dqbuf.index);
604 gsc_input_buffer_queued_count_--;
607 // Dequeue completed GSC output (VIDEO_CAPTURE) buffers, and recycle to the
608 // free list. Queue the corresponding MFC buffer to the GSC->MFC holding
610 while (gsc_output_buffer_queued_count_ > 0) {
611 DCHECK(gsc_output_streamon_);
612 memset(&dqbuf, 0, sizeof(dqbuf));
613 memset(&planes, 0, sizeof(planes));
614 dqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
615 dqbuf.memory = V4L2_MEMORY_DMABUF;
616 dqbuf.m.planes = planes;
618 if (HANDLE_EINTR(ioctl(gsc_fd_, VIDIOC_DQBUF, &dqbuf)) != 0) {
619 if (errno == EAGAIN) {
620 // EAGAIN if we're just out of buffers to dequeue.
623 DPLOG(ERROR) << "DequeueGsc(): ioctl() failed: VIDIOC_DQBUF";
624 NOTIFY_ERROR(kPlatformFailureError);
627 GscOutputRecord& output_record = gsc_output_buffer_map_[dqbuf.index];
628 DCHECK(output_record.at_device);
629 DCHECK(output_record.mfc_input != -1);
630 mfc_ready_input_buffers_.push_back(output_record.mfc_input);
631 output_record.at_device = false;
632 output_record.mfc_input = -1;
633 gsc_free_output_buffers_.push_back(dqbuf.index);
634 gsc_output_buffer_queued_count_--;
637 void ExynosVideoEncodeAccelerator::EnqueueMfc() {
638 DVLOG(3) << "EnqueueMfc()";
639 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
641 // Enqueue all the MFC inputs we can.
642 const int old_mfc_inputs_queued = mfc_input_buffer_queued_count_;
643 while (!mfc_ready_input_buffers_.empty()) {
644 if (!EnqueueMfcInputRecord())
647 if (old_mfc_inputs_queued == 0 && mfc_input_buffer_queued_count_ != 0) {
648 // We just started up a previously empty queue.
649 // Queue state changed; signal interrupt.
650 if (!SetDevicePollInterrupt())
652 // Start VIDIOC_STREAMON if we haven't yet.
653 if (!mfc_input_streamon_) {
654 __u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
655 IOCTL_OR_ERROR_RETURN(mfc_fd_, VIDIOC_STREAMON, &type);
656 mfc_input_streamon_ = true;
660 // Enqueue all the MFC outputs we can.
661 const int old_mfc_outputs_queued = mfc_output_buffer_queued_count_;
662 while (!mfc_free_output_buffers_.empty() && !encoder_output_queue_.empty()) {
663 if (!EnqueueMfcOutputRecord())
666 if (old_mfc_outputs_queued == 0 && mfc_output_buffer_queued_count_ != 0) {
667 // We just started up a previously empty queue.
668 // Queue state changed; signal interrupt.
669 if (!SetDevicePollInterrupt())
671 // Start VIDIOC_STREAMON if we haven't yet.
672 if (!mfc_output_streamon_) {
673 __u32 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
674 IOCTL_OR_ERROR_RETURN(mfc_fd_, VIDIOC_STREAMON, &type);
675 mfc_output_streamon_ = true;
680 void ExynosVideoEncodeAccelerator::DequeueMfc() {
681 DVLOG(3) << "DequeueMfc()";
682 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
684 // Dequeue completed MFC input (VIDEO_OUTPUT) buffers, and recycle to the free
686 struct v4l2_buffer dqbuf;
687 struct v4l2_plane planes[2];
688 while (mfc_input_buffer_queued_count_ > 0) {
689 DCHECK(mfc_input_streamon_);
690 memset(&dqbuf, 0, sizeof(dqbuf));
691 memset(&planes, 0, sizeof(planes));
692 dqbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
693 dqbuf.memory = V4L2_MEMORY_MMAP;
694 dqbuf.m.planes = planes;
696 if (HANDLE_EINTR(ioctl(mfc_fd_, VIDIOC_DQBUF, &dqbuf)) != 0) {
697 if (errno == EAGAIN) {
698 // EAGAIN if we're just out of buffers to dequeue.
701 DPLOG(ERROR) << "DequeueMfc(): ioctl() failed: VIDIOC_DQBUF";
702 NOTIFY_ERROR(kPlatformFailureError);
705 MfcInputRecord& input_record = mfc_input_buffer_map_[dqbuf.index];
706 DCHECK(input_record.at_device);
707 input_record.at_device = false;
708 mfc_free_input_buffers_.push_back(dqbuf.index);
709 mfc_input_buffer_queued_count_--;
712 // Dequeue completed MFC output (VIDEO_CAPTURE) buffers, and recycle to the
713 // free list. Notify the client that an output buffer is complete.
714 while (mfc_output_buffer_queued_count_ > 0) {
715 DCHECK(mfc_output_streamon_);
716 memset(&dqbuf, 0, sizeof(dqbuf));
717 memset(planes, 0, sizeof(planes));
718 dqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
719 dqbuf.memory = V4L2_MEMORY_MMAP;
720 dqbuf.m.planes = planes;
722 if (HANDLE_EINTR(ioctl(mfc_fd_, VIDIOC_DQBUF, &dqbuf)) != 0) {
723 if (errno == EAGAIN) {
724 // EAGAIN if we're just out of buffers to dequeue.
727 DPLOG(ERROR) << "DequeueMfc(): ioctl() failed: VIDIOC_DQBUF";
728 NOTIFY_ERROR(kPlatformFailureError);
731 const bool key_frame = ((dqbuf.flags & V4L2_BUF_FLAG_KEYFRAME) != 0);
732 MfcOutputRecord& output_record = mfc_output_buffer_map_[dqbuf.index];
733 DCHECK(output_record.at_device);
734 DCHECK(output_record.buffer_ref.get());
736 void* output_data = output_record.address;
737 size_t output_size = dqbuf.m.planes[0].bytesused;
738 // This shouldn't happen, but just in case. We should be able to recover
739 // after next keyframe after showing some corruption.
740 DCHECK_LE(output_size, output_buffer_byte_size_);
741 if (output_size > output_buffer_byte_size_)
742 output_size = output_buffer_byte_size_;
744 reinterpret_cast<uint8*>(output_record.buffer_ref->shm->memory());
745 if (output_format_fourcc_ == V4L2_PIX_FMT_H264) {
746 if (stream_header_size_ == 0) {
747 // Assume that the first buffer dequeued is the stream header.
748 stream_header_size_ = output_size;
749 stream_header_.reset(new uint8[stream_header_size_]);
750 memcpy(stream_header_.get(), output_data, stream_header_size_);
753 output_buffer_byte_size_ - stream_header_size_ >= output_size) {
754 // Insert stream header before every keyframe.
755 memcpy(target_data, stream_header_.get(), stream_header_size_);
756 memcpy(target_data + stream_header_size_, output_data, output_size);
757 output_size += stream_header_size_;
759 memcpy(target_data, output_data, output_size);
762 memcpy(target_data, output_data, output_size);
765 DVLOG(3) << "DequeueMfc(): returning "
766 "bitstream_buffer_id=" << output_record.buffer_ref->id
767 << ", key_frame=" << key_frame;
768 child_message_loop_proxy_->PostTask(
770 base::Bind(&Client::BitstreamBufferReady,
772 output_record.buffer_ref->id,
775 output_record.at_device = false;
776 output_record.buffer_ref.reset();
777 mfc_free_output_buffers_.push_back(dqbuf.index);
778 mfc_output_buffer_queued_count_--;
782 bool ExynosVideoEncodeAccelerator::EnqueueGscInputRecord() {
783 DVLOG(3) << "EnqueueGscInputRecord()";
784 DCHECK(!encoder_input_queue_.empty());
785 DCHECK(!gsc_free_input_buffers_.empty());
787 // Enqueue a GSC input (VIDEO_OUTPUT) buffer for an input video frame
788 scoped_refptr<media::VideoFrame> frame = encoder_input_queue_.front();
789 const int gsc_buffer = gsc_free_input_buffers_.back();
790 GscInputRecord& input_record = gsc_input_buffer_map_[gsc_buffer];
791 DCHECK(!input_record.at_device);
792 DCHECK(!input_record.frame.get());
793 struct v4l2_buffer qbuf;
794 struct v4l2_plane qbuf_planes[3];
795 memset(&qbuf, 0, sizeof(qbuf));
796 memset(qbuf_planes, 0, sizeof(qbuf_planes));
797 qbuf.index = gsc_buffer;
798 qbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
799 qbuf.memory = V4L2_MEMORY_USERPTR;
800 qbuf.m.planes = qbuf_planes;
801 switch (input_format_fourcc_) {
802 case V4L2_PIX_FMT_RGB32: {
803 qbuf.m.planes[0].bytesused = input_allocated_size_.GetArea() * 4;
804 qbuf.m.planes[0].length = input_allocated_size_.GetArea() * 4;
805 qbuf.m.planes[0].m.userptr = reinterpret_cast<unsigned long>(
806 frame->data(media::VideoFrame::kRGBPlane));
810 case V4L2_PIX_FMT_YUV420M: {
811 qbuf.m.planes[0].bytesused = input_allocated_size_.GetArea();
812 qbuf.m.planes[0].length = input_allocated_size_.GetArea();
813 qbuf.m.planes[0].m.userptr = reinterpret_cast<unsigned long>(
814 frame->data(media::VideoFrame::kYPlane));
815 qbuf.m.planes[1].bytesused = input_allocated_size_.GetArea() / 4;
816 qbuf.m.planes[1].length = input_allocated_size_.GetArea() / 4;
817 qbuf.m.planes[1].m.userptr = reinterpret_cast<unsigned long>(
818 frame->data(media::VideoFrame::kUPlane));
819 qbuf.m.planes[2].bytesused = input_allocated_size_.GetArea() / 4;
820 qbuf.m.planes[2].length = input_allocated_size_.GetArea() / 4;
821 qbuf.m.planes[2].m.userptr = reinterpret_cast<unsigned long>(
822 frame->data(media::VideoFrame::kVPlane));
828 NOTIFY_ERROR(kIllegalStateError);
831 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_QBUF, &qbuf);
832 input_record.at_device = true;
833 input_record.frame = frame;
834 encoder_input_queue_.pop_front();
835 gsc_free_input_buffers_.pop_back();
836 gsc_input_buffer_queued_count_++;
840 bool ExynosVideoEncodeAccelerator::EnqueueGscOutputRecord() {
841 DVLOG(3) << "EnqueueGscOutputRecord()";
842 DCHECK(!gsc_free_output_buffers_.empty());
843 DCHECK(!mfc_free_input_buffers_.empty());
845 // Enqueue a GSC output (VIDEO_CAPTURE) buffer.
846 const int gsc_buffer = gsc_free_output_buffers_.back();
847 const int mfc_buffer = mfc_free_input_buffers_.back();
848 GscOutputRecord& output_record = gsc_output_buffer_map_[gsc_buffer];
849 MfcInputRecord& input_record = mfc_input_buffer_map_[mfc_buffer];
850 DCHECK(!output_record.at_device);
851 DCHECK_EQ(output_record.mfc_input, -1);
852 DCHECK(!input_record.at_device);
853 struct v4l2_buffer qbuf;
854 struct v4l2_plane qbuf_planes[2];
855 memset(&qbuf, 0, sizeof(qbuf));
856 memset(qbuf_planes, 0, sizeof(qbuf_planes));
857 qbuf.index = gsc_buffer;
858 qbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
859 qbuf.memory = V4L2_MEMORY_DMABUF;
860 qbuf.m.planes = qbuf_planes;
861 qbuf.m.planes[0].m.fd = input_record.fd[0];
862 qbuf.m.planes[1].m.fd = input_record.fd[1];
864 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_QBUF, &qbuf);
865 output_record.at_device = true;
866 output_record.mfc_input = mfc_buffer;
867 mfc_free_input_buffers_.pop_back();
868 gsc_free_output_buffers_.pop_back();
869 gsc_output_buffer_queued_count_++;
873 bool ExynosVideoEncodeAccelerator::EnqueueMfcInputRecord() {
874 DVLOG(3) << "EnqueueMfcInputRecord()";
875 DCHECK(!mfc_ready_input_buffers_.empty());
877 // Enqueue a MFC input (VIDEO_OUTPUT) buffer.
878 const int mfc_buffer = mfc_ready_input_buffers_.front();
879 MfcInputRecord& input_record = mfc_input_buffer_map_[mfc_buffer];
880 DCHECK(!input_record.at_device);
881 struct v4l2_buffer qbuf;
882 struct v4l2_plane qbuf_planes[2];
883 memset(&qbuf, 0, sizeof(qbuf));
884 memset(qbuf_planes, 0, sizeof(qbuf_planes));
885 qbuf.index = mfc_buffer;
886 qbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
887 qbuf.memory = V4L2_MEMORY_MMAP;
888 qbuf.m.planes = qbuf_planes;
890 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_QBUF, &qbuf);
891 input_record.at_device = true;
892 mfc_ready_input_buffers_.pop_front();
893 mfc_input_buffer_queued_count_++;
897 bool ExynosVideoEncodeAccelerator::EnqueueMfcOutputRecord() {
898 DVLOG(3) << "EnqueueMfcOutputRecord()";
899 DCHECK(!mfc_free_output_buffers_.empty());
900 DCHECK(!encoder_output_queue_.empty());
902 // Enqueue a MFC output (VIDEO_CAPTURE) buffer.
903 linked_ptr<BitstreamBufferRef> output_buffer = encoder_output_queue_.back();
904 const int mfc_buffer = mfc_free_output_buffers_.back();
905 MfcOutputRecord& output_record = mfc_output_buffer_map_[mfc_buffer];
906 DCHECK(!output_record.at_device);
907 DCHECK(!output_record.buffer_ref.get());
908 struct v4l2_buffer qbuf;
909 struct v4l2_plane qbuf_planes[1];
910 memset(&qbuf, 0, sizeof(qbuf));
911 memset(qbuf_planes, 0, sizeof(qbuf_planes));
912 qbuf.index = mfc_buffer;
913 qbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
914 qbuf.memory = V4L2_MEMORY_MMAP;
915 qbuf.m.planes = qbuf_planes;
917 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_QBUF, &qbuf);
918 output_record.at_device = true;
919 output_record.buffer_ref = output_buffer;
920 encoder_output_queue_.pop_back();
921 mfc_free_output_buffers_.pop_back();
922 mfc_output_buffer_queued_count_++;
926 bool ExynosVideoEncodeAccelerator::StartDevicePoll() {
927 DVLOG(3) << "StartDevicePoll()";
928 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
929 DCHECK(!device_poll_thread_.IsRunning());
931 // Start up the device poll thread and schedule its first DevicePollTask().
932 if (!device_poll_thread_.Start()) {
933 DLOG(ERROR) << "StartDevicePoll(): Device thread failed to start";
934 NOTIFY_ERROR(kPlatformFailureError);
937 // Enqueue a poll task with no devices to poll on -- it will wait only on the
939 device_poll_thread_.message_loop()->PostTask(
941 base::Bind(&ExynosVideoEncodeAccelerator::DevicePollTask,
942 base::Unretained(this),
948 bool ExynosVideoEncodeAccelerator::StopDevicePoll() {
949 DVLOG(3) << "StopDevicePoll()";
951 // Signal the DevicePollTask() to stop, and stop the device poll thread.
952 if (!SetDevicePollInterrupt())
954 device_poll_thread_.Stop();
955 // Clear the interrupt now, to be sure.
956 if (!ClearDevicePollInterrupt())
960 if (gsc_input_streamon_) {
961 __u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
962 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_STREAMOFF, &type);
964 gsc_input_streamon_ = false;
965 if (gsc_output_streamon_) {
966 __u32 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
967 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_STREAMOFF, &type);
969 gsc_output_streamon_ = false;
970 if (mfc_input_streamon_) {
971 __u32 type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
972 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_STREAMOFF, &type);
974 mfc_input_streamon_ = false;
975 if (mfc_output_streamon_) {
976 __u32 type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
977 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_STREAMOFF, &type);
979 mfc_output_streamon_ = false;
981 // Reset all our accounting info.
982 encoder_input_queue_.clear();
983 gsc_free_input_buffers_.clear();
984 for (size_t i = 0; i < gsc_input_buffer_map_.size(); ++i) {
985 GscInputRecord& input_record = gsc_input_buffer_map_[i];
986 input_record.at_device = false;
987 input_record.frame = NULL;
988 gsc_free_input_buffers_.push_back(i);
990 gsc_input_buffer_queued_count_ = 0;
991 gsc_free_output_buffers_.clear();
992 for (size_t i = 0; i < gsc_output_buffer_map_.size(); ++i) {
993 GscOutputRecord& output_record = gsc_output_buffer_map_[i];
994 output_record.at_device = false;
995 output_record.mfc_input = -1;
996 gsc_free_output_buffers_.push_back(i);
998 gsc_output_buffer_queued_count_ = 0;
999 mfc_ready_input_buffers_.clear();
1000 mfc_free_input_buffers_.clear();
1001 for (size_t i = 0; i < mfc_input_buffer_map_.size(); ++i) {
1002 MfcInputRecord& input_record = mfc_input_buffer_map_[i];
1003 input_record.at_device = false;
1004 mfc_free_input_buffers_.push_back(i);
1006 mfc_input_buffer_queued_count_ = 0;
1007 mfc_free_output_buffers_.clear();
1008 for (size_t i = 0; i < mfc_output_buffer_map_.size(); ++i) {
1009 MfcOutputRecord& output_record = mfc_output_buffer_map_[i];
1010 output_record.at_device = false;
1011 output_record.buffer_ref.reset();
1012 mfc_free_output_buffers_.push_back(i);
1014 mfc_output_buffer_queued_count_ = 0;
1015 encoder_output_queue_.clear();
1017 DVLOG(3) << "StopDevicePoll(): device poll stopped";
1021 bool ExynosVideoEncodeAccelerator::SetDevicePollInterrupt() {
1022 DVLOG(3) << "SetDevicePollInterrupt()";
1024 // We might get called here if we fail during initialization, in which case we
1025 // don't have a file descriptor.
1026 if (device_poll_interrupt_fd_ == -1)
1029 const uint64 buf = 1;
1030 if (HANDLE_EINTR((write(device_poll_interrupt_fd_, &buf, sizeof(buf)))) <
1031 static_cast<ssize_t>(sizeof(buf))) {
1032 DPLOG(ERROR) << "SetDevicePollInterrupt(): write() failed";
1033 NOTIFY_ERROR(kPlatformFailureError);
1039 bool ExynosVideoEncodeAccelerator::ClearDevicePollInterrupt() {
1040 DVLOG(3) << "ClearDevicePollInterrupt()";
1042 // We might get called here if we fail during initialization, in which case we
1043 // don't have a file descriptor.
1044 if (device_poll_interrupt_fd_ == -1)
1048 if (HANDLE_EINTR(read(device_poll_interrupt_fd_, &buf, sizeof(buf))) <
1049 static_cast<ssize_t>(sizeof(buf))) {
1050 if (errno == EAGAIN) {
1051 // No interrupt flag set, and we're reading nonblocking. Not an error.
1054 DPLOG(ERROR) << "ClearDevicePollInterrupt(): read() failed";
1055 NOTIFY_ERROR(kPlatformFailureError);
1062 void ExynosVideoEncodeAccelerator::DevicePollTask(unsigned int poll_fds) {
1063 DVLOG(3) << "DevicePollTask()";
1064 DCHECK_EQ(device_poll_thread_.message_loop(), base::MessageLoop::current());
1065 DCHECK_NE(device_poll_interrupt_fd_, -1);
1067 // This routine just polls the set of device fds, and schedules a
1068 // ServiceDeviceTask() on encoder_thread_ when processing needs to occur.
1069 // Other threads may notify this task to return early by writing to
1070 // device_poll_interrupt_fd_.
1071 struct pollfd pollfds[3];
1074 // Add device_poll_interrupt_fd_;
1075 pollfds[0].fd = device_poll_interrupt_fd_;
1076 pollfds[0].events = POLLIN | POLLERR;
1079 // Add GSC fd, if we should poll on it.
1080 // GSC has to wait until both input and output buffers are queued.
1081 if (poll_fds & kPollGsc) {
1082 DVLOG(3) << "DevicePollTask(): adding GSC to poll() set";
1083 pollfds[nfds].fd = gsc_fd_;
1084 pollfds[nfds].events = POLLIN | POLLOUT | POLLERR;
1087 if (poll_fds & kPollMfc) {
1088 DVLOG(3) << "DevicePollTask(): adding MFC to poll() set";
1089 pollfds[nfds].fd = mfc_fd_;
1090 pollfds[nfds].events = POLLIN | POLLOUT | POLLERR;
1095 if (HANDLE_EINTR(poll(pollfds, nfds, -1)) == -1) {
1096 DPLOG(ERROR) << "DevicePollTask(): poll() failed";
1097 NOTIFY_ERROR(kPlatformFailureError);
1101 // All processing should happen on ServiceDeviceTask(), since we shouldn't
1102 // touch encoder state from this thread.
1103 encoder_thread_.message_loop()->PostTask(
1105 base::Bind(&ExynosVideoEncodeAccelerator::ServiceDeviceTask,
1106 base::Unretained(this)));
1109 void ExynosVideoEncodeAccelerator::NotifyError(Error error) {
1110 DVLOG(1) << "NotifyError(): error=" << error;
1112 if (!child_message_loop_proxy_->BelongsToCurrentThread()) {
1113 child_message_loop_proxy_->PostTask(
1116 &ExynosVideoEncodeAccelerator::NotifyError, weak_this_, error));
1121 client_->NotifyError(error);
1122 client_ptr_factory_.InvalidateWeakPtrs();
1126 void ExynosVideoEncodeAccelerator::SetEncoderState(State state) {
1127 DVLOG(3) << "SetEncoderState(): state=" << state;
1129 // We can touch encoder_state_ only if this is the encoder thread or the
1130 // encoder thread isn't running.
1131 if (encoder_thread_.message_loop() != NULL &&
1132 encoder_thread_.message_loop() != base::MessageLoop::current()) {
1133 encoder_thread_.message_loop()->PostTask(
1135 base::Bind(&ExynosVideoEncodeAccelerator::SetEncoderState,
1136 base::Unretained(this),
1139 encoder_state_ = state;
1143 void ExynosVideoEncodeAccelerator::RequestEncodingParametersChangeTask(
1146 DVLOG(3) << "RequestEncodingParametersChangeTask(): bitrate=" << bitrate
1147 << ", framerate=" << framerate;
1148 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
1155 struct v4l2_ext_control ctrls[1];
1156 struct v4l2_ext_controls control;
1157 memset(&ctrls, 0, sizeof(ctrls));
1158 memset(&control, 0, sizeof(control));
1159 ctrls[0].id = V4L2_CID_MPEG_VIDEO_BITRATE;
1160 ctrls[0].value = bitrate;
1161 control.ctrl_class = V4L2_CTRL_CLASS_MPEG;
1162 control.count = arraysize(ctrls);
1163 control.controls = ctrls;
1164 IOCTL_OR_ERROR_RETURN(mfc_fd_, VIDIOC_S_EXT_CTRLS, &control);
1166 struct v4l2_streamparm parms;
1167 memset(&parms, 0, sizeof(parms));
1168 parms.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1169 // Note that we are provided "frames per second" but V4L2 expects "time per
1170 // frame"; hence we provide the reciprocal of the framerate here.
1171 parms.parm.output.timeperframe.numerator = 1;
1172 parms.parm.output.timeperframe.denominator = framerate;
1173 IOCTL_OR_ERROR_RETURN(mfc_fd_, VIDIOC_S_PARM, &parms);
1176 bool ExynosVideoEncodeAccelerator::CreateGscInputBuffers() {
1177 DVLOG(3) << "CreateGscInputBuffers()";
1178 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1179 DCHECK_EQ(encoder_state_, kUninitialized);
1180 DCHECK(!gsc_input_streamon_);
1182 struct v4l2_control control;
1183 memset(&control, 0, sizeof(control));
1184 control.id = V4L2_CID_ROTATE;
1186 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CTRL, &control);
1188 // HFLIP actually seems to control vertical mirroring for GSC, and vice-versa.
1189 memset(&control, 0, sizeof(control));
1190 control.id = V4L2_CID_HFLIP;
1192 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CTRL, &control);
1194 memset(&control, 0, sizeof(control));
1195 control.id = V4L2_CID_VFLIP;
1197 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CTRL, &control);
1199 memset(&control, 0, sizeof(control));
1200 control.id = V4L2_CID_ALPHA_COMPONENT;
1201 control.value = 255;
1202 if (HANDLE_EINTR(ioctl(gsc_fd_, VIDIOC_S_CTRL, &control)) != 0) {
1203 // TODO(posciak): This is a temporary hack and should be removed when
1204 // all platforms migrate to kernel >=3.8.
1205 memset(&control, 0, sizeof(control));
1206 control.id = V4L2_CID_GLOBAL_ALPHA;
1207 control.value = 255;
1208 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CTRL, &control);
1211 struct v4l2_format format;
1212 memset(&format, 0, sizeof(format));
1213 format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1214 format.fmt.pix_mp.width = input_allocated_size_.width();
1215 format.fmt.pix_mp.height = input_allocated_size_.height();
1216 format.fmt.pix_mp.pixelformat = input_format_fourcc_;
1217 switch (input_format_fourcc_) {
1218 case V4L2_PIX_FMT_RGB32:
1219 format.fmt.pix_mp.plane_fmt[0].sizeimage =
1220 input_allocated_size_.GetArea() * 4;
1221 format.fmt.pix_mp.plane_fmt[0].bytesperline =
1222 input_allocated_size_.width() * 4;
1223 format.fmt.pix_mp.num_planes = 1;
1225 case V4L2_PIX_FMT_YUV420M:
1226 format.fmt.pix_mp.plane_fmt[0].sizeimage =
1227 input_allocated_size_.GetArea();
1228 format.fmt.pix_mp.plane_fmt[0].bytesperline =
1229 input_allocated_size_.width();
1230 format.fmt.pix_mp.plane_fmt[1].sizeimage =
1231 input_allocated_size_.GetArea() / 4;
1232 format.fmt.pix_mp.plane_fmt[1].bytesperline =
1233 input_allocated_size_.width() / 2;
1234 format.fmt.pix_mp.plane_fmt[2].sizeimage =
1235 input_allocated_size_.GetArea() / 4;
1236 format.fmt.pix_mp.plane_fmt[2].bytesperline =
1237 input_allocated_size_.width() / 2;
1238 format.fmt.pix_mp.num_planes = 3;
1242 NOTIFY_ERROR(kIllegalStateError);
1245 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_FMT, &format);
1247 struct v4l2_crop crop;
1248 memset(&crop, 0, sizeof(crop));
1249 crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1252 crop.c.width = input_visible_size_.width();
1253 crop.c.height = input_visible_size_.height();
1254 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CROP, &crop);
1256 struct v4l2_requestbuffers reqbufs;
1257 memset(&reqbufs, 0, sizeof(reqbufs));
1258 reqbufs.count = kGscInputBufferCount;
1259 reqbufs.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1260 reqbufs.memory = V4L2_MEMORY_USERPTR;
1261 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_REQBUFS, &reqbufs);
1263 DCHECK(gsc_input_buffer_map_.empty());
1264 gsc_input_buffer_map_.resize(reqbufs.count);
1265 for (size_t i = 0; i < gsc_input_buffer_map_.size(); ++i)
1266 gsc_free_input_buffers_.push_back(i);
1271 bool ExynosVideoEncodeAccelerator::CreateGscOutputBuffers() {
1272 DVLOG(3) << "CreateGscOutputBuffers()";
1273 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1274 DCHECK_EQ(encoder_state_, kUninitialized);
1275 DCHECK(!gsc_output_streamon_);
1277 struct v4l2_format format;
1278 memset(&format, 0, sizeof(format));
1279 format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1280 format.fmt.pix_mp.width = converted_allocated_size_.width();
1281 format.fmt.pix_mp.height = converted_allocated_size_.height();
1282 format.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_NV12M;
1283 format.fmt.pix_mp.plane_fmt[0].sizeimage =
1284 converted_allocated_size_.GetArea();
1285 format.fmt.pix_mp.plane_fmt[1].sizeimage =
1286 converted_allocated_size_.GetArea() / 2;
1287 format.fmt.pix_mp.plane_fmt[0].bytesperline =
1288 converted_allocated_size_.width();
1289 format.fmt.pix_mp.plane_fmt[1].bytesperline =
1290 converted_allocated_size_.width();
1291 format.fmt.pix_mp.num_planes = 2;
1292 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_FMT, &format);
1294 struct v4l2_crop crop;
1295 memset(&crop, 0, sizeof(crop));
1296 crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1299 crop.c.width = converted_visible_size_.width();
1300 crop.c.height = converted_visible_size_.height();
1301 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_S_CROP, &crop);
1303 struct v4l2_requestbuffers reqbufs;
1304 memset(&reqbufs, 0, sizeof(reqbufs));
1305 reqbufs.count = kGscOutputBufferCount;
1306 reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1307 reqbufs.memory = V4L2_MEMORY_DMABUF;
1308 IOCTL_OR_ERROR_RETURN_FALSE(gsc_fd_, VIDIOC_REQBUFS, &reqbufs);
1310 DCHECK(gsc_output_buffer_map_.empty());
1311 gsc_output_buffer_map_.resize(reqbufs.count);
1312 for (size_t i = 0; i < gsc_output_buffer_map_.size(); ++i)
1313 gsc_free_output_buffers_.push_back(i);
1317 bool ExynosVideoEncodeAccelerator::SetMfcFormats() {
1318 DVLOG(3) << "SetMfcFormats()";
1319 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1320 DCHECK(!mfc_input_streamon_);
1321 DCHECK(!mfc_output_streamon_);
1323 // VIDIOC_S_FMT on OUTPUT queue.
1324 struct v4l2_format format;
1325 memset(&format, 0, sizeof(format));
1326 format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1327 format.fmt.pix_mp.width = input_allocated_size_.width();
1328 format.fmt.pix_mp.height = input_allocated_size_.height();
1329 format.fmt.pix_mp.pixelformat = V4L2_PIX_FMT_NV12M;
1330 format.fmt.pix_mp.num_planes = 2;
1331 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_S_FMT, &format);
1332 // We read direct from GSC, so we rely on the HW not changing our set
1334 DCHECK_EQ(format.fmt.pix_mp.plane_fmt[0].sizeimage,
1335 static_cast<__u32>(input_allocated_size_.GetArea()));
1336 DCHECK_EQ(format.fmt.pix_mp.plane_fmt[0].bytesperline,
1337 static_cast<__u32>(input_allocated_size_.width()));
1338 DCHECK_EQ(format.fmt.pix_mp.plane_fmt[1].sizeimage,
1339 static_cast<__u32>(input_allocated_size_.GetArea() / 2));
1340 DCHECK_EQ(format.fmt.pix_mp.plane_fmt[1].bytesperline,
1341 static_cast<__u32>(input_allocated_size_.width()));
1343 struct v4l2_crop crop;
1344 memset(&crop, 0, sizeof(crop));
1345 crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
1348 crop.c.width = input_visible_size_.width();
1349 crop.c.height = input_visible_size_.height();
1350 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_S_CROP, &crop);
1352 // VIDIOC_S_FMT on CAPTURE queue.
1353 output_buffer_byte_size_ = kMfcOutputBufferSize;
1354 memset(&format, 0, sizeof(format));
1355 format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1356 format.fmt.pix_mp.width = output_visible_size_.width();
1357 format.fmt.pix_mp.height = output_visible_size_.height();
1358 format.fmt.pix_mp.pixelformat = output_format_fourcc_;
1359 format.fmt.pix_mp.plane_fmt[0].sizeimage = output_buffer_byte_size_;
1360 format.fmt.pix_mp.num_planes = 1;
1361 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_S_FMT, &format);
1366 bool ExynosVideoEncodeAccelerator::InitMfcControls() {
1367 struct v4l2_ext_control ctrls[9];
1368 struct v4l2_ext_controls control;
1369 memset(&ctrls, 0, sizeof(ctrls));
1370 memset(&control, 0, sizeof(control));
1371 // No B-frames, for lowest decoding latency.
1372 ctrls[0].id = V4L2_CID_MPEG_VIDEO_B_FRAMES;
1374 // Enable frame-level bitrate control.
1375 ctrls[1].id = V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE;
1377 // Enable "tight" bitrate mode. For this to work properly, frame- and mb-level
1378 // bitrate controls have to be enabled as well.
1379 ctrls[2].id = V4L2_CID_MPEG_MFC51_VIDEO_RC_REACTION_COEFF;
1381 // Force bitrate control to average over a GOP (for tight bitrate
1383 ctrls[3].id = V4L2_CID_MPEG_MFC51_VIDEO_RC_FIXED_TARGET_BIT;
1385 // Quantization parameter maximum value (for variable bitrate control).
1386 ctrls[4].id = V4L2_CID_MPEG_VIDEO_H264_MAX_QP;
1387 ctrls[4].value = 51;
1388 // Separate stream header so we can cache it and insert into the stream.
1389 ctrls[5].id = V4L2_CID_MPEG_VIDEO_HEADER_MODE;
1390 ctrls[5].value = V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE;
1391 // Enable macroblock-level bitrate control.
1392 ctrls[6].id = V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE;
1394 // Use H.264 level 4.0 to match the supported max resolution.
1395 ctrls[7].id = V4L2_CID_MPEG_VIDEO_H264_LEVEL;
1396 ctrls[7].value = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
1397 // Disable periodic key frames.
1398 ctrls[8].id = V4L2_CID_MPEG_VIDEO_GOP_SIZE;
1400 control.ctrl_class = V4L2_CTRL_CLASS_MPEG;
1401 control.count = arraysize(ctrls);
1402 control.controls = ctrls;
1403 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_S_EXT_CTRLS, &control);
1408 bool ExynosVideoEncodeAccelerator::CreateMfcInputBuffers() {
1409 DVLOG(3) << "CreateMfcInputBuffers()";
1410 // This function runs on encoder_thread_ after output buffers have been
1411 // provided by the client.
1412 DCHECK_EQ(encoder_thread_.message_loop(), base::MessageLoop::current());
1413 DCHECK(!mfc_input_streamon_);
1415 struct v4l2_requestbuffers reqbufs;
1416 memset(&reqbufs, 0, sizeof(reqbufs));
1417 reqbufs.count = 1; // Driver will allocate the appropriate number of buffers.
1418 reqbufs.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1419 reqbufs.memory = V4L2_MEMORY_MMAP;
1420 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_REQBUFS, &reqbufs);
1422 DCHECK(mfc_input_buffer_map_.empty());
1423 mfc_input_buffer_map_.resize(reqbufs.count);
1424 for (size_t i = 0; i < mfc_input_buffer_map_.size(); ++i) {
1425 MfcInputRecord& input_record = mfc_input_buffer_map_[i];
1426 for (int j = 0; j < 2; ++j) {
1427 // Export the DMABUF fd so GSC can write to it.
1428 struct v4l2_exportbuffer expbuf;
1429 memset(&expbuf, 0, sizeof(expbuf));
1430 expbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1433 expbuf.flags = O_CLOEXEC;
1434 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_EXPBUF, &expbuf);
1435 input_record.fd[j] = expbuf.fd;
1437 mfc_free_input_buffers_.push_back(i);
1443 bool ExynosVideoEncodeAccelerator::CreateMfcOutputBuffers() {
1444 DVLOG(3) << "CreateMfcOutputBuffers()";
1445 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1446 DCHECK(!mfc_output_streamon_);
1448 struct v4l2_requestbuffers reqbufs;
1449 memset(&reqbufs, 0, sizeof(reqbufs));
1450 reqbufs.count = kMfcOutputBufferCount;
1451 reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1452 reqbufs.memory = V4L2_MEMORY_MMAP;
1453 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_REQBUFS, &reqbufs);
1455 DCHECK(mfc_output_buffer_map_.empty());
1456 mfc_output_buffer_map_.resize(reqbufs.count);
1457 for (size_t i = 0; i < mfc_output_buffer_map_.size(); ++i) {
1458 struct v4l2_plane planes[1];
1459 struct v4l2_buffer buffer;
1460 memset(&buffer, 0, sizeof(buffer));
1461 memset(planes, 0, sizeof(planes));
1463 buffer.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1464 buffer.memory = V4L2_MEMORY_MMAP;
1465 buffer.m.planes = planes;
1466 buffer.length = arraysize(planes);
1467 IOCTL_OR_ERROR_RETURN_FALSE(mfc_fd_, VIDIOC_QUERYBUF, &buffer);
1468 void* address = mmap(NULL, buffer.m.planes[0].length,
1469 PROT_READ | PROT_WRITE, MAP_SHARED, mfc_fd_,
1470 buffer.m.planes[0].m.mem_offset);
1471 if (address == MAP_FAILED) {
1472 DPLOG(ERROR) << "CreateMfcOutputBuffers(): mmap() failed";
1475 mfc_output_buffer_map_[i].address = address;
1476 mfc_output_buffer_map_[i].length = buffer.m.planes[0].length;
1477 mfc_free_output_buffers_.push_back(i);
1483 void ExynosVideoEncodeAccelerator::DestroyGscInputBuffers() {
1484 DVLOG(3) << "DestroyGscInputBuffers()";
1485 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1486 DCHECK(!gsc_input_streamon_);
1488 struct v4l2_requestbuffers reqbufs;
1489 memset(&reqbufs, 0, sizeof(reqbufs));
1491 reqbufs.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1492 reqbufs.memory = V4L2_MEMORY_USERPTR;
1493 if (HANDLE_EINTR(ioctl(gsc_fd_, VIDIOC_REQBUFS, &reqbufs)) != 0)
1494 DPLOG(ERROR) << "DestroyGscInputBuffers(): ioctl() failed: VIDIOC_REQBUFS";
1496 gsc_input_buffer_map_.clear();
1497 gsc_free_input_buffers_.clear();
1500 void ExynosVideoEncodeAccelerator::DestroyGscOutputBuffers() {
1501 DVLOG(3) << "DestroyGscOutputBuffers()";
1502 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1503 DCHECK(!gsc_output_streamon_);
1505 struct v4l2_requestbuffers reqbufs;
1506 memset(&reqbufs, 0, sizeof(reqbufs));
1508 reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1509 reqbufs.memory = V4L2_MEMORY_DMABUF;
1510 if (HANDLE_EINTR(ioctl(gsc_fd_, VIDIOC_REQBUFS, &reqbufs)) != 0)
1511 DPLOG(ERROR) << "DestroyGscOutputBuffers(): ioctl() failed: VIDIOC_REQBUFS";
1513 gsc_output_buffer_map_.clear();
1514 gsc_free_output_buffers_.clear();
1517 void ExynosVideoEncodeAccelerator::DestroyMfcInputBuffers() {
1518 DVLOG(3) << "DestroyMfcInputBuffers()";
1519 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1520 DCHECK(!mfc_input_streamon_);
1522 for (size_t buf = 0; buf < mfc_input_buffer_map_.size(); ++buf) {
1523 MfcInputRecord& input_record = mfc_input_buffer_map_[buf];
1525 for (size_t plane = 0; plane < arraysize(input_record.fd); ++plane)
1526 HANDLE_EINTR(close(mfc_input_buffer_map_[buf].fd[plane]));
1529 struct v4l2_requestbuffers reqbufs;
1530 memset(&reqbufs, 0, sizeof(reqbufs));
1532 reqbufs.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1533 reqbufs.memory = V4L2_MEMORY_MMAP;
1534 if (HANDLE_EINTR(ioctl(mfc_fd_, VIDIOC_REQBUFS, &reqbufs)) != 0)
1535 DPLOG(ERROR) << "DestroyMfcInputBuffers(): ioctl() failed: VIDIOC_REQBUFS";
1537 mfc_input_buffer_map_.clear();
1538 mfc_free_input_buffers_.clear();
1541 void ExynosVideoEncodeAccelerator::DestroyMfcOutputBuffers() {
1542 DVLOG(3) << "DestroyMfcOutputBuffers()";
1543 DCHECK(child_message_loop_proxy_->BelongsToCurrentThread());
1544 DCHECK(!mfc_output_streamon_);
1546 for (size_t i = 0; i < mfc_output_buffer_map_.size(); ++i) {
1547 if (mfc_output_buffer_map_[i].address != NULL) {
1548 munmap(mfc_output_buffer_map_[i].address,
1549 mfc_output_buffer_map_[i].length);
1553 struct v4l2_requestbuffers reqbufs;
1554 memset(&reqbufs, 0, sizeof(reqbufs));
1556 reqbufs.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1557 reqbufs.memory = V4L2_MEMORY_MMAP;
1558 if (HANDLE_EINTR(ioctl(mfc_fd_, VIDIOC_REQBUFS, &reqbufs)) != 0)
1559 DPLOG(ERROR) << "DestroyMfcOutputBuffers(): ioctl() failed: VIDIOC_REQBUFS";
1561 mfc_output_buffer_map_.clear();
1562 mfc_free_output_buffers_.clear();
1565 } // namespace content