#include "context.h"
#include "defs.h"
+#include "flags.h"
#include "httpd.h"
#include "timebase.h"
#define BITSTREAM_ALLOCATE_STEPPING 4096
#define SURFACE_NUM 16 /* 16 surfaces for source YUV */
+#define MAX_NUM_REF1 16 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
+#define MAX_NUM_REF2 32 // Seemingly a hardware-fixed value, not related to SURFACE_NUM
static constexpr unsigned int MaxFrameNum = (2<<16);
static constexpr unsigned int MaxPicOrderCntLsb = (2<<8);
using namespace std;
+// H.264 video comes out in encoding order (e.g. with two B-frames:
+// 0, 3, 1, 2, 6, 4, 5, etc.), but uncompressed video needs to
+// come in the right order. Since we do everything, including waiting
+// for the frames to come out of OpenGL, in encoding order, we need
+// a reordering buffer for uncompressed frames so that they come out
+// correctly. We go the super-lazy way of not making it understand
+// anything about the true order (which introduces some extra latency,
+// though); we know that for N B-frames we need at most (N-1) frames
+// in the reorder buffer, and can just sort on that.
+//
+// The class also deals with keeping a freelist as needed.
+class FrameReorderer {
+public:
+ FrameReorderer(unsigned queue_length, int width, int height);
+
+ // Returns the next frame to insert with its pts, if any. Otherwise -1 and nullptr.
+ // Does _not_ take ownership of data; a copy is taken if needed.
+ // The returned pointer is valid until the next call to reorder_frame, or destruction.
+ // As a special case, if queue_length == 0, will just return pts and data (no reordering needed).
+ pair<int64_t, const uint8_t *> reorder_frame(int64_t pts, const uint8_t *data);
+
+ // The same as reorder_frame, but without inserting anything. Used to empty the queue.
+ pair<int64_t, const uint8_t *> get_first_frame();
+
+ bool empty() const { return frames.empty(); }
+
+private:
+ unsigned queue_length;
+ int width, height;
+
+ priority_queue<pair<int64_t, uint8_t *>> frames;
+ stack<uint8_t *> freelist; // Includes the last value returned from reorder_frame.
+
+ // Owns all the pointers. Normally, freelist and frames could do this themselves,
+ // except priority_queue doesn't work well with movable-only types.
+ vector<unique_ptr<uint8_t[]>> owner;
+};
+
+FrameReorderer::FrameReorderer(unsigned queue_length, int width, int height)
+ : queue_length(queue_length), width(width), height(height)
+{
+ for (unsigned i = 0; i < queue_length; ++i) {
+ owner.emplace_back(new uint8_t[width * height * 2]);
+ freelist.push(owner.back().get());
+ }
+}
+
+pair<int64_t, const uint8_t *> FrameReorderer::reorder_frame(int64_t pts, const uint8_t *data)
+{
+ if (queue_length == 0) {
+ return make_pair(pts, data);
+ }
+
+ assert(!freelist.empty());
+ uint8_t *storage = freelist.top();
+ freelist.pop();
+ memcpy(storage, data, width * height * 2);
+ frames.emplace(-pts, storage); // Invert pts to get smallest first.
+
+ if (frames.size() >= queue_length) {
+ return get_first_frame();
+ } else {
+ return make_pair(-1, nullptr);
+ }
+}
+
+pair<int64_t, const uint8_t *> FrameReorderer::get_first_frame()
+{
+ assert(!frames.empty());
+ pair<int64_t, uint8_t *> storage = frames.top();
+ frames.pop();
+ int64_t pts = storage.first;
+ freelist.push(storage.second);
+ return make_pair(-pts, storage.second); // Re-invert pts (see reorder_frame()).
+}
+
class H264EncoderImpl {
public:
H264EncoderImpl(QSurface *surface, const string &va_display, int width, int height, HTTPD *httpd);
void encode_thread_func();
void encode_remaining_frames_as_p(int encoding_frame_num, int gop_start_display_frame_num, int64_t last_dts);
+ void add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data);
void encode_frame(PendingFrame frame, int encoding_frame_num, int display_frame_num, int gop_start_display_frame_num,
int frame_type, int64_t pts, int64_t dts);
void storage_task_thread();
QSurface *surface;
AVCodecContext *context_audio;
+ AVFrame *audio_frame = nullptr;
HTTPD *httpd;
+ unique_ptr<FrameReorderer> reorderer;
Display *x11_display = nullptr;
EGLImage y_egl_image, cbcr_egl_image;
// Only if use_zerocopy == false.
- RefCountedGLsync readback_done_fence;
GLuint pbo;
uint8_t *y_ptr, *cbcr_ptr;
size_t y_offset, cbcr_offset;
VAEncPictureParameterBufferH264 pic_param;
VAEncSliceParameterBufferH264 slice_param;
VAPictureH264 CurrentCurrPic;
- VAPictureH264 ReferenceFrames[16], RefPicList0_P[32], RefPicList0_B[32], RefPicList1_B[32];
+ VAPictureH264 ReferenceFrames[MAX_NUM_REF1], RefPicList0_P[MAX_NUM_REF2], RefPicList0_B[MAX_NUM_REF2], RefPicList1_B[MAX_NUM_REF2];
// Static quality settings.
static constexpr unsigned int frame_bitrate = 15000000 / 60; // Doesn't really matter; only initial_qp does.
return NULL;
}
use_zerocopy = true;
+ if (global_flags.uncompressed_video_to_http) {
+ fprintf(stderr, "Disabling zerocopy H.264 encoding due to --uncompressed_video_to_http.\n");
+ use_zerocopy = false;
+ }
return vaGetDisplay(x11_display);
} else if (va_display[0] != '/') {
x11_display = XOpenDisplay(va_display.c_str());
return NULL;
}
use_zerocopy = true;
+ if (global_flags.uncompressed_video_to_http) {
+ fprintf(stderr, "Disabling zerocopy H.264 encoding due to --uncompressed_video_to_http.\n");
+ use_zerocopy = false;
+ }
return vaGetDisplay(x11_display);
} else {
drm_fd = open(va_display.c_str(), O_RDWR);
if (support_encode == 0) {
printf("Can't find VAEntrypointEncSlice for H264 profiles. If you are using a non-Intel GPU\n");
- printf("but have one in your system, try launching Nageru with --va-display /dev/dri/card0\n");
+ printf("but have one in your system, try launching Nageru with --va-display /dev/dri/renderD128\n");
printf("to use VA-API against DRM instead of X11.\n");
exit(1);
} else {
glBindBuffer(GL_PIXEL_PACK_BUFFER, gl_surfaces[i].pbo);
glBufferStorage(GL_PIXEL_PACK_BUFFER, frame_width * frame_height * 2, nullptr, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
uint8_t *ptr = (uint8_t *)glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, frame_width * frame_height * 2, GL_MAP_READ_BIT | GL_MAP_PERSISTENT_BIT);
- gl_surfaces[i].y_ptr = ptr;
- gl_surfaces[i].cbcr_ptr = ptr + frame_width * frame_height;
gl_surfaces[i].y_offset = 0;
gl_surfaces[i].cbcr_offset = frame_width * frame_height;
+ gl_surfaces[i].y_ptr = ptr + gl_surfaces[i].y_offset;
+ gl_surfaces[i].cbcr_ptr = ptr + gl_surfaces[i].cbcr_offset;
glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
}
}
CurrentCurrPic = pic_param.CurrPic;
memcpy(pic_param.ReferenceFrames, ReferenceFrames, numShortTerm*sizeof(VAPictureH264));
- for (i = numShortTerm; i < SURFACE_NUM; i++) {
+ for (i = numShortTerm; i < MAX_NUM_REF1; i++) {
pic_param.ReferenceFrames[i].picture_id = VA_INVALID_SURFACE;
pic_param.ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
}
int refpiclist0_max = h264_maxref & 0xffff;
memcpy(slice_param.RefPicList0, RefPicList0_P, refpiclist0_max*sizeof(VAPictureH264));
- for (i = refpiclist0_max; i < 32; i++) {
+ for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
}
int refpiclist1_max = (h264_maxref >> 16) & 0xffff;
memcpy(slice_param.RefPicList0, RefPicList0_B, refpiclist0_max*sizeof(VAPictureH264));
- for (i = refpiclist0_max; i < 32; i++) {
+ for (i = refpiclist0_max; i < MAX_NUM_REF2; i++) {
slice_param.RefPicList0[i].picture_id = VA_INVALID_SURFACE;
slice_param.RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
}
memcpy(slice_param.RefPicList1, RefPicList1_B, refpiclist1_max*sizeof(VAPictureH264));
- for (i = refpiclist1_max; i < 32; i++) {
+ for (i = refpiclist1_max; i < MAX_NUM_REF2; i++) {
slice_param.RefPicList1[i].picture_id = VA_INVALID_SURFACE;
slice_param.RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
}
pkt.data = reinterpret_cast<uint8_t *>(&data[0]);
pkt.size = data.size();
pkt.stream_index = 0;
- if (task.frame_type == FRAME_IDR || task.frame_type == FRAME_I) {
+ if (task.frame_type == FRAME_IDR) {
pkt.flags = AV_PKT_FLAG_KEY;
} else {
pkt.flags = 0;
}
//pkt.duration = 1;
- httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay);
+ httpd->add_packet(pkt, task.pts + global_delay, task.dts + global_delay,
+ global_flags.uncompressed_video_to_http ? HTTPD::DESTINATION_FILE_ONLY : HTTPD::DESTINATION_FILE_AND_HTTP);
}
// Encode and add all audio frames up to and including the pts of this video frame.
for ( ;; ) {
pending_audio_frames.erase(it);
}
- AVFrame *frame = avcodec_alloc_frame();
- frame->nb_samples = audio.size() / 2;
- frame->format = AV_SAMPLE_FMT_S32;
- frame->channel_layout = AV_CH_LAYOUT_STEREO;
+ audio_frame->nb_samples = audio.size() / 2;
+ audio_frame->format = AV_SAMPLE_FMT_S32;
+ audio_frame->channel_layout = AV_CH_LAYOUT_STEREO;
unique_ptr<int32_t[]> int_samples(new int32_t[audio.size()]);
- int ret = avcodec_fill_audio_frame(frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
+ int ret = avcodec_fill_audio_frame(audio_frame, 2, AV_SAMPLE_FMT_S32, (const uint8_t*)int_samples.get(), audio.size() * sizeof(int32_t), 1);
if (ret < 0) {
fprintf(stderr, "avcodec_fill_audio_frame() failed with %d\n", ret);
exit(1);
}
- for (int i = 0; i < frame->nb_samples * 2; ++i) {
+ for (int i = 0; i < audio_frame->nb_samples * 2; ++i) {
if (audio[i] >= 1.0f) {
int_samples[i] = 2147483647;
} else if (audio[i] <= -1.0f) {
pkt.data = nullptr;
pkt.size = 0;
int got_output;
- avcodec_encode_audio2(context_audio, &pkt, frame, &got_output);
+ avcodec_encode_audio2(context_audio, &pkt, audio_frame, &got_output);
if (got_output) {
pkt.stream_index = 1;
- httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay);
+ pkt.flags = AV_PKT_FLAG_KEY;
+ httpd->add_packet(pkt, audio_pts + global_delay, audio_pts + global_delay, HTTPD::DESTINATION_FILE_AND_HTTP);
}
// TODO: Delayed frames.
- avcodec_free_frame(&frame);
+ av_frame_unref(audio_frame);
av_free_packet(&pkt);
if (audio_pts == task.pts) break;
}
-
-#if 0
- printf("\r "); /* return back to startpoint */
- switch (encode_order % 4) {
- case 0:
- printf("|");
- break;
- case 1:
- printf("/");
- break;
- case 2:
- printf("-");
- break;
- case 3:
- printf("\\");
- break;
- }
- printf("%08lld", encode_order);
-#endif
}
{
unique_lock<mutex> lock(storage_task_queue_mutex);
storage_task_queue.push(move(task));
- srcsurface_status[task.display_order % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
storage_task_queue_changed.notify_all();
}
fprintf(stderr, "Could not open codec\n");
exit(1);
}
+ audio_frame = av_frame_alloc();
frame_width = width;
frame_height = height;
//print_input();
+ if (global_flags.uncompressed_video_to_http) {
+ reorderer.reset(new FrameReorderer(ip_period - 1, frame_width, frame_height));
+ }
+
init_va(va_display);
setup_encode();
H264EncoderImpl::~H264EncoderImpl()
{
shutdown();
+ av_frame_free(&audio_frame);
+
+ // TODO: Destroy context.
}
bool H264EncoderImpl::begin_frame(GLuint *y_tex, GLuint *cbcr_tex)
{
// Wait until this frame slot is done encoding.
unique_lock<mutex> lock(storage_task_queue_mutex);
+ if (srcsurface_status[current_storage_frame % SURFACE_NUM] != SRC_SURFACE_FREE) {
+ fprintf(stderr, "Warning: Slot %d (for frame %d) is still encoding, rendering has to wait for H.264 encoder\n",
+ current_storage_frame % SURFACE_NUM, current_storage_frame);
+ }
storage_task_queue_changed.wait(lock, [this]{ return storage_thread_should_quit || (srcsurface_status[current_storage_frame % SURFACE_NUM] == SRC_SURFACE_FREE); });
+ srcsurface_status[current_storage_frame % SURFACE_NUM] = SRC_SURFACE_IN_ENCODING;
if (storage_thread_should_quit) return false;
}
encode_frame(frame, encoding_frame_num++, display_frame_num, gop_start_display_frame_num, FRAME_P, frame.pts, dts);
last_dts = dts;
}
+
+ if (global_flags.uncompressed_video_to_http) {
+ // Add frames left in reorderer.
+ while (!reorderer->empty()) {
+ pair<int64_t, const uint8_t *> output_frame = reorderer->get_first_frame();
+ add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
+ }
+ }
+}
+
+void H264EncoderImpl::add_packet_for_uncompressed_frame(int64_t pts, const uint8_t *data)
+{
+ AVPacket pkt;
+ memset(&pkt, 0, sizeof(pkt));
+ pkt.buf = nullptr;
+ pkt.data = const_cast<uint8_t *>(data);
+ pkt.size = frame_width * frame_height * 2;
+ pkt.stream_index = 0;
+ pkt.flags = AV_PKT_FLAG_KEY;
+ httpd->add_packet(pkt, pts, pts, HTTPD::DESTINATION_HTTP_ONLY);
}
namespace {
int frame_type, int64_t pts, int64_t dts)
{
// Wait for the GPU to be done with the frame.
- glClientWaitSync(frame.fence.get(), 0, 0);
+ GLenum sync_status;
+ do {
+ sync_status = glClientWaitSync(frame.fence.get(), 0, 1000000000);
+ check_error();
+ } while (sync_status == GL_TIMEOUT_EXPIRED);
+ assert(sync_status != GL_WAIT_FAILED);
// Release back any input frames we needed to render this frame.
frame.input_frames.clear();
unsigned char *surface_p = nullptr;
vaMapBuffer(va_dpy, surf->surface_image.buf, (void **)&surface_p);
- unsigned char *y_ptr = (unsigned char *)surface_p;
- memcpy_with_pitch(y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
+ unsigned char *va_y_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[0];
+ memcpy_with_pitch(va_y_ptr, surf->y_ptr, frame_width, surf->surface_image.pitches[0], frame_height);
- unsigned char *cbcr_ptr = (unsigned char *)surface_p + frame_width * frame_height;
- memcpy_with_pitch(cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
+ unsigned char *va_cbcr_ptr = (unsigned char *)surface_p + surf->surface_image.offsets[1];
+ memcpy_with_pitch(va_cbcr_ptr, surf->cbcr_ptr, (frame_width / 2) * sizeof(uint16_t), surf->surface_image.pitches[1], frame_height / 2);
va_status = vaUnmapBuffer(va_dpy, surf->surface_image.buf);
CHECK_VASTATUS(va_status, "vaUnmapBuffer");
+
+ if (global_flags.uncompressed_video_to_http) {
+ // Add uncompressed video. (Note that pts == dts here.)
+ const int64_t global_delay = int64_t(ip_period - 1) * (TIMEBASE / MAX_FPS); // Needs to match audio.
+ pair<int64_t, const uint8_t *> output_frame = reorderer->reorder_frame(pts + global_delay, reinterpret_cast<uint8_t *>(surf->y_ptr));
+ if (output_frame.second != nullptr) {
+ add_packet_for_uncompressed_frame(output_frame.first, output_frame.second);
+ }
+ }
}
va_status = vaDestroyImage(va_dpy, surf->surface_image.image_id);