#include "player.h"
#include "clip_list.h"
-#include "shared/context.h"
#include "defs.h"
-#include "shared/ffmpeg_raii.h"
#include "flags.h"
#include "frame_on_disk.h"
-#include "shared/httpd.h"
#include "jpeg_frame_view.h"
+#include "shared/context.h"
+#include "shared/ffmpeg_raii.h"
+#include "shared/httpd.h"
#include "shared/metrics.h"
#include "shared/mux.h"
#include "shared/timebase.h"
return double(pts - clip.pts_in) / (clip.pts_out - clip.pts_in);
}
+void do_splice(const vector<ClipWithID> &new_list, size_t playing_index1, ssize_t playing_index2, vector<ClipWithID> *old_list)
+{
+ assert(playing_index2 == -1 || size_t(playing_index2) == playing_index1 + 1);
+
+ // First see if we can do the simple thing; find an element in the new
+ // list that we are already playing, which will serve as our splice point.
+ int splice_start_new_list = -1;
+ for (size_t clip_idx = 0; clip_idx < new_list.size(); ++clip_idx) {
+ if (new_list[clip_idx].id == (*old_list)[playing_index1].id) {
+ splice_start_new_list = clip_idx + 1;
+ } else if (playing_index2 != -1 && new_list[clip_idx].id == (*old_list)[playing_index2].id) {
+ splice_start_new_list = clip_idx + 1;
+ }
+ }
+ if (splice_start_new_list == -1) {
+ // OK, so the playing items are no longer in the new list. Most likely,
+ // that means we deleted some range that included them. But the ones
+ // before should stay put -- and we don't want to play them. So find
+ // the ones that we've already played, and ignore them. Hopefully,
+ // they're contiguous; the last one that's not seen will be our cut point.
+ //
+ // Keeping track of the playlist range explicitly in the UI would remove
+ // the need for these heuristics, but it would probably also mean we'd
+ // have to lock the playing clip, which sounds annoying.
+ unordered_map<uint64_t, size_t> played_ids;
+ for (size_t clip_idx = 0; clip_idx < playing_index1; ++old_list) {
+ played_ids.emplace((*old_list)[clip_idx].id, clip_idx);
+ }
+ for (size_t clip_idx = 0; clip_idx < new_list.size(); ++clip_idx) {
+ if (played_ids.count(new_list[clip_idx].id)) {
+ splice_start_new_list = clip_idx + 1;
+ }
+ }
+
+ if (splice_start_new_list == -1) {
+ // OK, we didn't find any matches; the lists are totally distinct.
+ // So probably the entire thing was deleted; leave it alone.
+ return;
+ }
+ }
+
+ size_t splice_start_old_list = ((playing_index2 == -1) ? playing_index1 : playing_index2) + 1;
+ old_list->erase(old_list->begin() + splice_start_old_list, old_list->end());
+ old_list->insert(old_list->end(), new_list.begin() + splice_start_new_list, new_list.end());
+}
+
} // namespace
void Player::play_playlist_once()
{
- vector<Clip> clip_list;
+ vector<ClipWithID> clip_list;
bool clip_ready;
steady_clock::time_point before_sleep = steady_clock::now();
clip_list = move(queued_clip_list);
queued_clip_list.clear();
assert(!clip_list.empty());
+ assert(!splice_ready); // This corner case should have been handled in splice_play().
}
}
}
steady_clock::time_point origin = steady_clock::now(); // TODO: Add a 100 ms buffer for ramp-up?
- int64_t in_pts_origin = clip_list[0].pts_in;
+ int64_t in_pts_origin = clip_list[0].clip.pts_in;
for (size_t clip_idx = 0; clip_idx < clip_list.size(); ++clip_idx) {
- const Clip &clip = clip_list[clip_idx];
- const Clip *next_clip = (clip_idx + 1 < clip_list.size()) ? &clip_list[clip_idx + 1] : nullptr;
+ const Clip *clip = &clip_list[clip_idx].clip;
+ const Clip *next_clip = (clip_idx + 1 < clip_list.size()) ? &clip_list[clip_idx + 1].clip : nullptr;
int64_t out_pts_origin = pts;
double next_clip_fade_time = -1.0;
if (next_clip != nullptr) {
- double duration_this_clip = double(clip.pts_out - in_pts_origin) / TIMEBASE / clip.speed;
- double duration_next_clip = double(next_clip->pts_out - next_clip->pts_in) / TIMEBASE / clip.speed;
- next_clip_fade_time = min(min(duration_this_clip, duration_next_clip), clip.fade_time_seconds);
+ double duration_this_clip = double(clip->pts_out - in_pts_origin) / TIMEBASE / clip->speed;
+ double duration_next_clip = double(next_clip->pts_out - next_clip->pts_in) / TIMEBASE / clip->speed;
+ next_clip_fade_time = min(min(duration_this_clip, duration_next_clip), clip->fade_time_seconds);
}
- int stream_idx = clip.stream_idx;
+ int stream_idx = clip->stream_idx;
// Start playing exactly at a frame.
// TODO: Snap secondary (fade-to) clips in the same fashion
double out_pts = out_pts_origin + TIMEBASE * frameno / global_flags.output_framerate;
next_frame_start =
origin + microseconds(lrint((out_pts - out_pts_origin) * 1e6 / TIMEBASE));
- int64_t in_pts = lrint(in_pts_origin + TIMEBASE * frameno * clip.speed / global_flags.output_framerate);
+ int64_t in_pts = lrint(in_pts_origin + TIMEBASE * frameno * clip->speed / global_flags.output_framerate);
pts = lrint(out_pts);
- if (in_pts >= clip.pts_out) {
+ if (in_pts >= clip->pts_out) {
break;
}
+ {
+ lock_guard<mutex> lock(queue_state_mu);
+ if (splice_ready) {
+ fprintf(stderr, "splicing\n");
+ if (next_clip == nullptr) {
+ do_splice(to_splice_clip_list, clip_idx, -1, &clip_list);
+ } else {
+ do_splice(to_splice_clip_list, clip_idx, clip_idx + 1, &clip_list);
+ }
+ to_splice_clip_list.clear();
+ splice_ready = false;
+
+ // Refresh the clip pointer, since the clip list may have been reallocated.
+ clip = &clip_list[clip_idx].clip;
+
+ // Recompute next_clip and any needed fade times, since the next clip may have changed
+ // (or we may have gone from no new clip to having one, or the other way).
+ next_clip = (clip_idx + 1 < clip_list.size()) ? &clip_list[clip_idx + 1].clip : nullptr;
+ if (next_clip != nullptr) {
+ double duration_this_clip = double(clip->pts_out - in_pts) / TIMEBASE / clip->speed;
+ double duration_next_clip = double(next_clip->pts_out - next_clip->pts_in) / TIMEBASE / clip->speed;
+ next_clip_fade_time = min(min(duration_this_clip, duration_next_clip), clip->fade_time_seconds);
+ }
+ }
+ }
+
steady_clock::duration time_behind = steady_clock::now() - next_frame_start;
if (stream_output != FILE_STREAM_OUTPUT && time_behind >= milliseconds(200)) {
fprintf(stderr, "WARNING: %ld ms behind, dropping a frame (no matter the type).\n",
- lrint(1e3 * duration<double>(time_behind).count()));
+ lrint(1e3 * duration<double>(time_behind).count()));
++metric_dropped_unconditional_frame;
continue;
}
-
// pts not affected by the swapping below.
int64_t in_pts_for_progress = in_pts, in_pts_secondary_for_progress = -1;
FrameOnDisk secondary_frame;
int secondary_stream_idx = -1;
float fade_alpha = 0.0f;
- double time_left_this_clip = double(clip.pts_out - in_pts) / TIMEBASE / clip.speed;
+ double time_left_this_clip = double(clip->pts_out - in_pts) / TIMEBASE / clip->speed;
if (next_clip != nullptr && time_left_this_clip <= next_clip_fade_time) {
- // We're in a fade to the next clip.
+ // We're in a fade to the next clip->
secondary_stream_idx = next_clip->stream_idx;
- int64_t in_pts_secondary = lrint(next_clip->pts_in + (next_clip_fade_time - time_left_this_clip) * TIMEBASE * clip.speed);
+ int64_t in_pts_secondary = lrint(next_clip->pts_in + (next_clip_fade_time - time_left_this_clip) * TIMEBASE * clip->speed);
in_pts_secondary_for_progress = in_pts_secondary;
fade_alpha = 1.0f - time_left_this_clip / next_clip_fade_time;
if (progress_callback != nullptr) {
// NOTE: None of this will take into account any snapping done below.
- map<size_t, double> progress{{ clip_idx, calc_progress(clip, in_pts_for_progress) }};
+ double clip_progress = calc_progress(*clip, in_pts_for_progress);
+ map<uint64_t, double> progress{ { clip_list[clip_idx].id, clip_progress } };
+ double time_remaining;
if (next_clip != nullptr && time_left_this_clip <= next_clip_fade_time) {
- progress[clip_idx + 1] = calc_progress(*next_clip, in_pts_secondary_for_progress);
+ double next_clip_progress = calc_progress(*next_clip, in_pts_secondary_for_progress);
+ progress[clip_list[clip_idx + 1].id] = next_clip_progress;
+ time_remaining = compute_time_left(clip_list, clip_idx + 1, next_clip_progress);
+ } else {
+ time_remaining = compute_time_left(clip_list, clip_idx, clip_progress);
}
- progress_callback(progress);
+ progress_callback(progress, time_remaining);
}
FrameOnDisk frame_lower, frame_upper;
unique_lock<mutex> lock(queue_state_mu);
if (video_stream == nullptr) {
// No queue, just wait until the right time and then show the frame.
- new_clip_changed.wait_until(lock, next_frame_start, [this]{
+ new_clip_changed.wait_until(lock, next_frame_start, [this] {
return should_quit || new_clip_ready || override_stream_idx != -1;
});
if (should_quit) {
//
// In this case, we don't sleep until next_frame_start; the displaying is
// done by the queue.
- new_clip_changed.wait(lock, [this]{
+ new_clip_changed.wait(lock, [this] {
if (num_queued_frames < max_queued_frames) {
return true;
}
for (FrameOnDisk snap_frame : { frame_lower, frame_upper }) {
if (fabs(snap_frame.pts - in_pts) < pts_snap_tolerance) {
display_single_frame(primary_stream_idx, snap_frame, secondary_stream_idx,
- secondary_frame, fade_alpha, next_frame_start, /*snapped=*/true);
+ secondary_frame, fade_alpha, next_frame_start, /*snapped=*/true);
in_pts_origin += snap_frame.pts - in_pts;
snapped = true;
break;
// decorrelated with no common factor, of course (e.g. 12.345 → 34.567, which we should
// really never see in practice).
for (double fraction : { 1.0 / 2.0, 1.0 / 3.0, 2.0 / 3.0, 1.0 / 4.0, 3.0 / 4.0,
- 1.0 / 5.0, 2.0 / 5.0, 3.0 / 5.0, 4.0 / 5.0 }) {
+ 1.0 / 5.0, 2.0 / 5.0, 3.0 / 5.0, 4.0 / 5.0 }) {
double subsnap_pts = frame_lower.pts + fraction * (frame_upper.pts - frame_lower.pts);
if (fabs(subsnap_pts - in_pts) < pts_snap_tolerance) {
in_pts_origin += lrint(subsnap_pts) - in_pts;
if (stream_output != FILE_STREAM_OUTPUT && time_behind >= milliseconds(100)) {
fprintf(stderr, "WARNING: %ld ms behind, dropping an interpolated frame.\n",
- lrint(1e3 * duration<double>(time_behind).count()));
+ lrint(1e3 * duration<double>(time_behind).count()));
++metric_dropped_interpolated_frame;
continue;
}
if (should_quit) {
return;
}
- if (done_callback != nullptr) {
- done_callback();
- }
// Start the next clip from the point where the fade went out.
if (next_clip != nullptr) {
origin = next_frame_start;
- in_pts_origin = next_clip->pts_in + lrint(next_clip_fade_time * TIMEBASE * clip.speed);
+ in_pts_origin = next_clip->pts_in + lrint(next_clip_fade_time * TIMEBASE * clip->speed);
}
}
void Player::display_single_frame(int primary_stream_idx, const FrameOnDisk &primary_frame, int secondary_stream_idx, const FrameOnDisk &secondary_frame, double fade_alpha, steady_clock::time_point frame_start, bool snapped)
{
- auto display_func = [this, primary_stream_idx, primary_frame, secondary_frame, fade_alpha]{
+ auto display_func = [this, primary_stream_idx, primary_frame, secondary_frame, fade_alpha] {
if (destination != nullptr) {
destination->setFrame(primary_stream_idx, primary_frame, secondary_frame, fade_alpha);
}
++metric_faded_frame;
}
video_stream->schedule_faded_frame(frame_start, pts, display_func,
- QueueSpotHolder(this), primary_frame,
- secondary_frame, fade_alpha);
+ QueueSpotHolder(this), primary_frame,
+ secondary_frame, fade_alpha);
}
}
last_pts_played = primary_frame.pts;
player_thread = thread(&Player::thread_func, this, file_avctx);
if (stream_output == HTTPD_STREAM_OUTPUT) {
- global_metrics.add("http_output_frames", {{ "type", "original" }, { "reason", "edge_frame_or_no_interpolation" }}, &metric_original_frame);
- global_metrics.add("http_output_frames", {{ "type", "faded" }, { "reason", "edge_frame_or_no_interpolation" }}, &metric_faded_frame);
- global_metrics.add("http_output_frames", {{ "type", "original" }, { "reason", "snapped" }}, &metric_original_snapped_frame);
- global_metrics.add("http_output_frames", {{ "type", "faded" }, { "reason", "snapped" }}, &metric_faded_snapped_frame);
- global_metrics.add("http_output_frames", {{ "type", "interpolated" }}, &metric_interpolated_frame);
- global_metrics.add("http_output_frames", {{ "type", "interpolated_faded" }}, &metric_interpolated_faded_frame);
- global_metrics.add("http_output_frames", {{ "type", "refresh" }}, &metric_refresh_frame);
- global_metrics.add("http_dropped_frames", {{ "type", "interpolated" }}, &metric_dropped_interpolated_frame);
- global_metrics.add("http_dropped_frames", {{ "type", "unconditional" }}, &metric_dropped_unconditional_frame);
+ global_metrics.add("http_output_frames", { { "type", "original" }, { "reason", "edge_frame_or_no_interpolation" } }, &metric_original_frame);
+ global_metrics.add("http_output_frames", { { "type", "faded" }, { "reason", "edge_frame_or_no_interpolation" } }, &metric_faded_frame);
+ global_metrics.add("http_output_frames", { { "type", "original" }, { "reason", "snapped" } }, &metric_original_snapped_frame);
+ global_metrics.add("http_output_frames", { { "type", "faded" }, { "reason", "snapped" } }, &metric_faded_snapped_frame);
+ global_metrics.add("http_output_frames", { { "type", "interpolated" } }, &metric_interpolated_frame);
+ global_metrics.add("http_output_frames", { { "type", "interpolated_faded" } }, &metric_interpolated_faded_frame);
+ global_metrics.add("http_output_frames", { { "type", "refresh" } }, &metric_refresh_frame);
+ global_metrics.add("http_dropped_frames", { { "type", "interpolated" } }, &metric_dropped_interpolated_frame);
+ global_metrics.add("http_dropped_frames", { { "type", "unconditional" } }, &metric_dropped_unconditional_frame);
}
}
player_thread.join();
}
-void Player::play(const vector<Clip> &clips)
+void Player::play(const vector<ClipWithID> &clips)
{
lock_guard<mutex> lock(queue_state_mu);
new_clip_ready = true;
queued_clip_list = clips;
+ splice_ready = false;
override_stream_idx = -1;
new_clip_changed.notify_all();
}
+void Player::splice_play(const vector<ClipWithID> &clips)
+{
+ lock_guard<mutex> lock(queue_state_mu);
+ if (new_clip_ready) {
+ queued_clip_list = clips;
+ assert(!splice_ready);
+ return;
+ }
+
+ splice_ready = true;
+ to_splice_clip_list = clips; // Overwrite any queued but not executed splice.
+}
+
void Player::override_angle(unsigned stream_idx)
{
int64_t last_pts;
lock_guard<mutex> lock(queue_state_mu);
if (new_clip_ready) {
assert(queued_clip_list.size() == 1);
- queued_clip_list[0].stream_idx = stream_idx;
+ queued_clip_list[0].clip.stream_idx = stream_idx;
return;
}
new_clip_changed.notify_all();
}
-double compute_time_left(const vector<Clip> &clips, const map<size_t, double> &progress)
+double compute_time_left(const vector<ClipWithID> &clips, size_t currently_playing_idx, double progress_currently_playing)
{
// Look at the last clip and then start counting from there.
- assert(!progress.empty());
- auto last_it = progress.end();
- --last_it;
double remaining = 0.0;
double last_fade_time_seconds = 0.0;
- for (size_t row = last_it->first; row < clips.size(); ++row) {
- const Clip &clip = clips[row];
+ for (size_t row = currently_playing_idx; row < clips.size(); ++row) {
+ const Clip &clip = clips[row].clip;
double clip_length = double(clip.pts_out - clip.pts_in) / TIMEBASE / clip.speed;
- if (row == last_it->first) {
+ if (row == currently_playing_idx) {
// A clip we're playing: Subtract the part we've already played.
- remaining = clip_length * (1.0 - last_it->second);
+ remaining = clip_length * (1.0 - progress_currently_playing);
} else {
// A clip we haven't played yet: Subtract the part that's overlapping
// with a previous clip (due to fade).
projects / nageru / blobdiff