#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"
extern HTTPD *global_httpd;
-void Player::thread_func(Player::StreamOutput stream_output, AVFormatContext *file_avctx)
+void Player::thread_func(AVFormatContext *file_avctx)
{
pthread_setname_np(pthread_self(), "Player");
check_error();
- int64_t pts = 0;
- Clip next_clip;
- size_t next_clip_idx = size_t(-1);
- bool got_next_clip = false;
- double next_clip_fade_time = -1.0;
-
while (!should_quit) {
-wait_for_clip:
- bool clip_ready;
- steady_clock::time_point before_sleep = steady_clock::now();
+ play_playlist_once();
+ }
+}
- // Wait until we're supposed to play something.
- {
- unique_lock<mutex> lock(queue_state_mu);
- clip_ready = new_clip_changed.wait_for(lock, milliseconds(100), [this] {
- return should_quit || (new_clip_ready && current_clip.pts_in != -1);
- });
- if (should_quit) {
- return;
- }
+namespace {
+
+double calc_progress(const Clip &clip, int64_t pts)
+{
+ return double(pts - clip.pts_in) / (clip.pts_out - clip.pts_in);
+}
+
+} // namespace
+
+void Player::play_playlist_once()
+{
+ vector<Clip> clip_list;
+ bool clip_ready;
+ steady_clock::time_point before_sleep = steady_clock::now();
+
+ // Wait until we're supposed to play something.
+ {
+ unique_lock<mutex> lock(queue_state_mu);
+ playing = false;
+ clip_ready = new_clip_changed.wait_for(lock, milliseconds(100), [this] {
+ return should_quit || new_clip_ready;
+ });
+ if (should_quit) {
+ return;
+ }
+ if (clip_ready) {
new_clip_ready = false;
playing = true;
+ clip_list = move(queued_clip_list);
+ queued_clip_list.clear();
+ assert(!clip_list.empty());
}
+ }
- steady_clock::duration time_slept = steady_clock::now() - before_sleep;
- pts += duration_cast<duration<size_t, TimebaseRatio>>(time_slept).count();
+ steady_clock::duration time_slept = steady_clock::now() - before_sleep;
+ pts += duration_cast<duration<size_t, TimebaseRatio>>(time_slept).count();
- if (!clip_ready) {
- if (video_stream != nullptr) {
- ++metric_refresh_frame;
- video_stream->schedule_refresh_frame(steady_clock::now(), pts, /*display_func=*/nullptr, QueueSpotHolder());
- }
- continue;
+ if (!clip_ready) {
+ if (video_stream != nullptr) {
+ ++metric_refresh_frame;
+ video_stream->schedule_refresh_frame(steady_clock::now(), pts, /*display_func=*/nullptr, QueueSpotHolder());
}
+ return;
+ }
- Clip clip;
- size_t clip_idx;
- unsigned stream_idx;
- {
- lock_guard<mutex> lock(mu);
- clip = current_clip;
- clip_idx = current_clip_idx;
- stream_idx = current_stream_idx;
- }
- steady_clock::time_point origin = steady_clock::now(); // TODO: Add a 100 ms buffer for ramp-up?
- int64_t in_pts_origin = clip.pts_in;
-got_clip:
+ 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;
+ 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;
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);
+ }
+
+ int stream_idx = clip.stream_idx;
+
// Start playing exactly at a frame.
// TODO: Snap secondary (fade-to) clips in the same fashion
// so that we don't get jank here).
}
}
- int64_t in_pts_start_next_clip = -1;
steady_clock::time_point next_frame_start;
for (int frameno = 0; !should_quit; ++frameno) { // Ends when the clip ends.
double out_pts = out_pts_origin + TIMEBASE * frameno / global_flags.output_framerate;
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;
}
- double time_left_this_clip = double(clip.pts_out - in_pts) / TIMEBASE / clip.speed;
- if (!got_next_clip && next_clip_callback != nullptr && time_left_this_clip <= clip.fade_time_seconds) {
- // Find the next clip so that we can begin a fade.
- tie(next_clip, next_clip_idx) = next_clip_callback();
- if (next_clip.pts_in != -1) {
- got_next_clip = true;
-
- double duration_next_clip = double(next_clip.pts_out - next_clip.pts_in) / TIMEBASE / clip.speed;
- next_clip_fade_time = std::min(time_left_this_clip, duration_next_clip);
- in_pts_start_next_clip = next_clip.pts_in + lrint(next_clip_fade_time * TIMEBASE * clip.speed);
- }
- }
-
// 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;
- if (got_next_clip && time_left_this_clip <= next_clip_fade_time) {
- 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);
+ 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.
+ 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);
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.
- double played_this_clip = double(in_pts_for_progress - clip.pts_in) / TIMEBASE / clip.speed;
- double total_length = double(clip.pts_out - clip.pts_in) / TIMEBASE / clip.speed;
- map<size_t, double> progress{{ clip_idx, played_this_clip / total_length }};
-
- if (got_next_clip && time_left_this_clip <= next_clip_fade_time) {
- double played_next_clip = double(in_pts_secondary_for_progress - next_clip.pts_in) / TIMEBASE / next_clip.speed;
- double total_next_length = double(next_clip.pts_out - next_clip.pts_in) / TIMEBASE / next_clip.speed;
- progress[next_clip_idx] = played_next_clip / total_next_length;
+ map<size_t, double> progress{ { clip_idx, calc_progress(clip, in_pts_for_progress) } };
+ 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);
}
progress_callback(progress);
}
break;
}
+ // Wait until we should, or (given buffering) can, output the frame.
{
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) {
- return;
- }
+ if (should_quit) {
+ return;
+ }
} else {
// If the queue is full (which is really the state we'd like to be in),
// wait until there's room for one more frame (ie., one was output from
//
// 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;
}
video_stream->clear_queue();
lock.lock();
}
- got_next_clip = false;
- goto wait_for_clip;
+ return;
}
+ // Honor if we got an override request for the camera.
if (override_stream_idx != -1) {
stream_idx = override_stream_idx;
override_stream_idx = -1;
}
}
- if (frame_lower.pts == frame_upper.pts || global_flags.interpolation_quality == 0) {
- auto display_func = [this, primary_stream_idx, frame_lower, secondary_frame, fade_alpha]{
- if (destination != nullptr) {
- destination->setFrame(primary_stream_idx, frame_lower, secondary_frame, fade_alpha);
- }
- };
- if (video_stream == nullptr) {
- display_func();
- } else {
- if (secondary_stream_idx == -1) {
- ++metric_original_frame;
- video_stream->schedule_original_frame(
- next_frame_start, pts, display_func, QueueSpotHolder(this),
- frame_lower);
- } else {
- assert(secondary_frame.pts != -1);
- ++metric_faded_frame;
- video_stream->schedule_faded_frame(next_frame_start, pts, display_func,
- QueueSpotHolder(this), frame_lower,
- secondary_frame, fade_alpha);
- }
- }
+ // If there's nothing to interpolate between, or if interpolation is turned off,
+ // or we're a preview, then just display the frame.
+ if (frame_lower.pts == frame_upper.pts || global_flags.interpolation_quality == 0 || video_stream == nullptr) {
+ display_single_frame(primary_stream_idx, frame_lower, secondary_stream_idx,
+ secondary_frame, fade_alpha, next_frame_start, /*snapped=*/false);
continue;
}
bool snapped = false;
for (FrameOnDisk snap_frame : { frame_lower, frame_upper }) {
if (fabs(snap_frame.pts - in_pts) < pts_snap_tolerance) {
- auto display_func = [this, primary_stream_idx, snap_frame, secondary_frame, fade_alpha]{
- if (destination != nullptr) {
- destination->setFrame(primary_stream_idx, snap_frame, secondary_frame, fade_alpha);
- }
- };
- if (video_stream == nullptr) {
- display_func();
- } else {
- if (secondary_stream_idx == -1) {
- ++metric_original_snapped_frame;
- video_stream->schedule_original_frame(
- next_frame_start, pts, display_func,
- QueueSpotHolder(this), snap_frame);
- } else {
- assert(secondary_frame.pts != -1);
- ++metric_faded_snapped_frame;
- video_stream->schedule_faded_frame(
- next_frame_start, pts, display_func, QueueSpotHolder(this),
- snap_frame, secondary_frame, fade_alpha);
- }
- }
+ display_single_frame(primary_stream_idx, snap_frame, secondary_stream_idx,
+ secondary_frame, fade_alpha, next_frame_start, /*snapped=*/true);
in_pts_origin += snap_frame.pts - in_pts;
snapped = true;
break;
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;
}
double alpha = double(in_pts - frame_lower.pts) / (frame_upper.pts - frame_lower.pts);
-
- if (video_stream == nullptr) {
- // Previews don't do any interpolation.
- assert(secondary_stream_idx == -1);
+ auto display_func = [this](shared_ptr<Frame> frame) {
if (destination != nullptr) {
- destination->setFrame(primary_stream_idx, frame_lower);
+ destination->setFrame(frame);
}
+ };
+ if (secondary_stream_idx == -1) {
+ ++metric_interpolated_frame;
} else {
- auto display_func = [this](shared_ptr<Frame> frame) {
- if (destination != nullptr) {
- destination->setFrame(frame);
- }
- };
- if (secondary_stream_idx == -1) {
- ++metric_interpolated_frame;
- } else {
- ++metric_interpolated_faded_frame;
- }
- video_stream->schedule_interpolated_frame(
- next_frame_start, pts, display_func, QueueSpotHolder(this),
- frame_lower, frame_upper, alpha,
- secondary_frame, fade_alpha);
+ ++metric_interpolated_faded_frame;
}
+ video_stream->schedule_interpolated_frame(
+ next_frame_start, pts, display_func, QueueSpotHolder(this),
+ frame_lower, frame_upper, alpha,
+ secondary_frame, fade_alpha);
+ last_pts_played = in_pts; // Not really needed; only previews use last_pts_played.
}
+ // The clip ended.
if (should_quit) {
return;
}
-
- // The clip ended.
-
- // Last-ditch effort to get the next clip (if e.g. the fade time was zero seconds).
- if (!got_next_clip && next_clip_callback != nullptr) {
- tie(next_clip, next_clip_idx) = next_clip_callback();
- if (next_clip.pts_in != -1) {
- got_next_clip = true;
- in_pts_start_next_clip = next_clip.pts_in;
- }
+ if (done_callback != nullptr) {
+ done_callback();
}
- // Switch to next clip if we got it.
- if (got_next_clip) {
- clip = next_clip;
- clip_idx = next_clip_idx;
- stream_idx = next_clip.stream_idx; // Override is used for previews only, and next_clip is used for live ony.
- if (done_callback != nullptr) {
- done_callback();
- }
- got_next_clip = false;
-
- // Start the next clip from the point where the fade went out.
+ // Start the next clip from the point where the fade went out.
+ if (next_clip != nullptr) {
origin = next_frame_start;
- in_pts_origin = in_pts_start_next_clip;
- goto got_clip;
+ in_pts_origin = next_clip->pts_in + lrint(next_clip_fade_time * TIMEBASE * clip.speed);
}
+ }
- {
- unique_lock<mutex> lock(queue_state_mu);
- playing = false;
+ if (done_callback != nullptr) {
+ done_callback();
+ }
+}
+
+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] {
+ if (destination != nullptr) {
+ destination->setFrame(primary_stream_idx, primary_frame, secondary_frame, fade_alpha);
}
- if (done_callback != nullptr) {
- done_callback();
+ };
+ if (video_stream == nullptr) {
+ display_func();
+ } else {
+ if (secondary_stream_idx == -1) {
+ // NOTE: We could be increasing unused metrics for previews, but that's harmless.
+ if (snapped) {
+ ++metric_original_snapped_frame;
+ } else {
+ ++metric_original_frame;
+ }
+ video_stream->schedule_original_frame(
+ frame_start, pts, display_func, QueueSpotHolder(this),
+ primary_frame);
+ } else {
+ assert(secondary_frame.pts != -1);
+ // NOTE: We could be increasing unused metrics for previews, but that's harmless.
+ if (snapped) {
+ ++metric_faded_snapped_frame;
+ } else {
+ ++metric_faded_frame;
+ }
+ video_stream->schedule_faded_frame(frame_start, pts, display_func,
+ QueueSpotHolder(this), primary_frame,
+ secondary_frame, fade_alpha);
}
}
+ last_pts_played = primary_frame.pts;
}
// Find the frame immediately before and after this point.
}
Player::Player(JPEGFrameView *destination, Player::StreamOutput stream_output, AVFormatContext *file_avctx)
- : destination(destination)
+ : destination(destination), stream_output(stream_output)
{
- player_thread = thread(&Player::thread_func, this, stream_output, file_avctx);
+ 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_clip(const Clip &clip, size_t clip_idx, unsigned stream_idx)
+void Player::play(const vector<Clip> &clips)
{
- {
- lock_guard<mutex> lock(mu);
- current_clip = clip;
- current_stream_idx = stream_idx;
- current_clip_idx = clip_idx;
- }
-
- {
- lock_guard<mutex> lock(queue_state_mu);
- new_clip_ready = true;
- override_stream_idx = -1;
- new_clip_changed.notify_all();
- }
+ lock_guard<mutex> lock(queue_state_mu);
+ new_clip_ready = true;
+ queued_clip_list = clips;
+ override_stream_idx = -1;
+ new_clip_changed.notify_all();
}
void Player::override_angle(unsigned stream_idx)
{
+ int64_t last_pts;
+
// Corner case: If a new clip is waiting to be played, change its stream and then we're done.
{
- unique_lock<mutex> lock(queue_state_mu);
+ lock_guard<mutex> lock(queue_state_mu);
if (new_clip_ready) {
- lock_guard<mutex> lock2(mu);
- current_stream_idx = stream_idx;
+ assert(queued_clip_list.size() == 1);
+ queued_clip_list[0].stream_idx = stream_idx;
return;
}
- }
- // If we are playing a clip, set override_stream_idx, and the player thread will
- // pick it up and change its internal index.
- {
- unique_lock<mutex> lock(queue_state_mu);
+ // If we are playing a clip, set override_stream_idx, and the player thread will
+ // pick it up and change its internal index.
if (playing) {
override_stream_idx = stream_idx;
new_clip_changed.notify_all();
+ return;
}
- }
- // OK, so we're standing still, presumably at the end of a clip.
- // Look at the current pts_out (if it exists), and show the closest
- // thing we've got.
- int64_t pts_out;
- {
- lock_guard<mutex> lock(mu);
- if (current_clip.pts_out < 0) {
+ // OK, so we're standing still, presumably at the end of a clip.
+ // Look at the last frame played (if it exists), and show the closest
+ // thing we've got.
+ if (last_pts_played < 0) {
return;
}
- pts_out = current_clip.pts_out;
+ last_pts = last_pts_played;
}
lock_guard<mutex> lock(frame_mu);
- auto it = find_first_frame_at_or_after(frames[stream_idx], pts_out);
+ auto it = find_first_frame_at_or_after(frames[stream_idx], last_pts);
if (it == frames[stream_idx].end()) {
return;
}
void Player::take_queue_spot()
{
- unique_lock<mutex> lock(queue_state_mu);
+ lock_guard<mutex> lock(queue_state_mu);
++num_queued_frames;
}
void Player::release_queue_spot()
{
- unique_lock<mutex> lock(queue_state_mu);
+ lock_guard<mutex> lock(queue_state_mu);
assert(num_queued_frames > 0);
--num_queued_frames;
new_clip_changed.notify_all();
projects / nageru / blobdiff