size_t last_used;
};
-struct PendingDecode {
- JPEGFrameView *destination;
-
- // For actual decodes (only if frame below is nullptr).
- FrameOnDisk primary, secondary;
- float fade_alpha; // Irrelevant if secondary.stream_idx == -1.
-
- // Already-decoded frames are also sent through PendingDecode,
- // so that they get drawn in the right order. If frame is nullptr,
- // it's a real decode.
- shared_ptr<Frame> frame;
-};
-
// There can be multiple JPEGFrameView instances, so make all the metrics static.
once_flag jpeg_metrics_inited;
atomic<int64_t> metric_jpeg_cache_used_bytes{ 0 }; // Same value as cache_bytes_used.
} // namespace
-thread JPEGFrameView::jpeg_decoder_thread;
mutex cache_mu;
map<FrameOnDisk, LRUFrame, FrameOnDiskLexicalOrder> cache; // Under cache_mu.
size_t cache_bytes_used = 0; // Under cache_mu.
-condition_variable any_pending_decodes;
-deque<PendingDecode> pending_decodes; // Under cache_mu.
atomic<size_t> event_counter{ 0 };
extern QGLWidget *global_share_widget;
extern atomic<bool> should_quit;
dinfo.comp_info[0].h_samp_factor, dinfo.comp_info[0].v_samp_factor,
dinfo.comp_info[1].h_samp_factor, dinfo.comp_info[1].v_samp_factor,
dinfo.comp_info[2].h_samp_factor, dinfo.comp_info[2].v_samp_factor);
- exit(1);
+ abort();
}
dinfo.raw_data_out = true;
++metric_jpeg_cache_miss_frames;
*did_decode = true;
- shared_ptr<Frame> frame = decode_jpeg(frame_reader->read_frame(frame_spec));
+ shared_ptr<Frame> frame = decode_jpeg(frame_reader->read_frame(frame_spec, /*read_video=*/true, /*read_audio=*/false).video);
lock_guard<mutex> lock(cache_mu);
cache_bytes_used += frame_size(*frame);
CacheMissBehavior cache_miss_behavior = DECODE_IF_NOT_IN_CACHE;
{
unique_lock<mutex> lock(cache_mu); // TODO: Perhaps under another lock?
- any_pending_decodes.wait(lock, [] {
+ any_pending_decodes.wait(lock, [this] {
return !pending_decodes.empty() || should_quit.load();
});
if (should_quit.load())
decode = pending_decodes.front();
pending_decodes.pop_front();
- size_t num_pending = 0;
- for (const PendingDecode &other_decode : pending_decodes) {
- if (other_decode.destination == decode.destination) {
- ++num_pending;
- }
- }
- if (num_pending > 3) {
+ if (pending_decodes.size() > 3) {
cache_miss_behavior = RETURN_NULLPTR_IF_NOT_IN_CACHE;
}
}
if (decode.frame != nullptr) {
// Already decoded, so just show it.
- decode.destination->setDecodedFrame(decode.frame, nullptr, 1.0f);
+ setDecodedFrame(decode.frame, nullptr, 1.0f);
continue;
}
}
bool found_in_cache;
- shared_ptr<Frame> frame = decode_jpeg_with_cache(frame_spec, cache_miss_behavior, &decode.destination->frame_reader, &found_in_cache);
+ shared_ptr<Frame> frame = decode_jpeg_with_cache(frame_spec, cache_miss_behavior, &frame_reader, &found_in_cache);
if (frame == nullptr) {
assert(cache_miss_behavior == RETURN_NULLPTR_IF_NOT_IN_CACHE);
}
// TODO: Could we get jitter between non-interpolated and interpolated frames here?
- decode.destination->setDecodedFrame(primary_frame, secondary_frame, decode.fade_alpha);
+ setDecodedFrame(primary_frame, secondary_frame, decode.fade_alpha);
}
}
-void JPEGFrameView::shutdown()
+JPEGFrameView::~JPEGFrameView()
{
any_pending_decodes.notify_all();
jpeg_decoder_thread.join();
decode.primary = frame;
decode.secondary = secondary_frame;
decode.fade_alpha = fade_alpha;
- decode.destination = this;
pending_decodes.push_back(decode);
any_pending_decodes.notify_all();
}
lock_guard<mutex> lock(cache_mu);
PendingDecode decode;
decode.frame = std::move(frame);
- decode.destination = this;
pending_decodes.push_back(decode);
any_pending_decodes.notify_all();
}
-ResourcePool *resource_pool = nullptr;
-
void JPEGFrameView::initializeGL()
{
glDisable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
check_error();
- static once_flag once;
- call_once(once, [] {
- resource_pool = new ResourcePool;
- jpeg_decoder_thread = std::thread(jpeg_decoder_thread_func);
- });
+ resource_pool = new ResourcePool;
+ jpeg_decoder_thread = std::thread(&JPEGFrameView::jpeg_decoder_thread_func, this);
ycbcr_converter.reset(new YCbCrConverter(YCbCrConverter::OUTPUT_TO_RGBA, resource_pool));