[stage] #575 Don't submit double amount of audio samples for interlaced modes

diff --git a/core/producer/stage.cpp b/core/producer/stage.cpp
index 54f30ff59542ba109eb8f24c904e2906ed846523..a0b16806d5aa03c348c696d7f191ba7b76aa0187 100644 (file)
--- a/core/producer/stage.cpp
+++ b/core/producer/stage.cpp
@@ -47,7 +47,7 @@
 #include <future>
 
 namespace caspar { namespace core {
-       
+
 struct stage::impl : public std::enable_shared_from_this<impl>
 {
        int                                                                                                                                             channel_index_;
@@ -67,21 +67,21 @@ public:
        {
                graph_->set_color("produce-time", diagnostics::color(0.0f, 1.0f, 0.0f));
        }
-               
+
        std::map<int, draw_frame> operator()(const video_format_desc& format_desc)
-       {               
+       {
                caspar::timer frame_timer;
 
                auto frames = executor_.invoke([=]() -> std::map<int, draw_frame>
                {
 
                        std::map<int, draw_frame> frames;
-                       
+
                        try
-                       {                       
+                       {
                                std::vector<int> indices;
 
-                               for (auto& layer : layers_)     
+                               for (auto& layer : layers_)
                                {
                                        // Prevent race conditions in parallel for each later
                                        frames[layer.first] = draw_frame::empty();
@@ -102,14 +102,14 @@ public:
                        {
                                layers_.clear();
                                CASPAR_LOG_CURRENT_EXCEPTION();
-                       }       
-                       
+                       }
+
 
                        return frames;
                });
-               
+
                //frames_subject_ << frames;
-               
+
                graph_->set_value("produce-time", frame_timer.elapsed()*format_desc.fps*0.5);
                *monitor_subject_ << monitor::message("/profiler/time") % frame_timer.elapsed() % (1.0/format_desc.fps);
 
@@ -122,8 +122,8 @@ public:
                auto& tween             = tweens_[index];
                auto& consumers = layer_consumers_[index];
 
-               auto frame  = layer.receive(format_desc);                                       
-               
+               auto frame  = layer.receive(format_desc);
+
                if (!consumers.empty())
                {
                        auto consumer_it = consumers | boost::adaptors::map_values;
@@ -134,13 +134,14 @@ public:
                }
 
                auto frame1 = frame;
-               
+
                frame1.transform() *= tween.fetch_and_tick(1);
 
                if(format_desc.field_mode != core::field_mode::progressive)
-               {                               
+               {
                        auto frame2 = frame;
                        frame2.transform() *= tween.fetch_and_tick(1);
+                       frame2.transform().audio_transform.volume = 0.0;
                        frame1 = core::draw_frame::interlace(frame1, frame2, format_desc.field_mode);
                }
 
@@ -157,7 +158,7 @@ public:
                }
                return it->second;
        }
-               
+
        std::future<void> apply_transforms(const std::vector<std::tuple<int, stage::transform_func_t, unsigned int, tweener>>& transforms)
        {
                return executor_.begin_invoke([=]
@@ -171,7 +172,7 @@ public:
                        }
                }, task_priority::high_priority);
        }
-                                               
+
        std::future<void> apply_transform(int index, const stage::transform_func_t& transform, unsigned int mix_duration, const tweener& tween)
        {
                return executor_.begin_invoke([=]
@@ -210,12 +211,12 @@ public:
        {
                return executor_.begin_invoke([=]
                {
-                       get_layer(index).load(producer, preview, auto_play_delta);                      
+                       get_layer(index).load(producer, preview, auto_play_delta);
                }, task_priority::high_priority);
        }
 
        std::future<void> pause(int index)
-       {               
+       {
                return executor_.begin_invoke([=]
                {
                        get_layer(index).pause();
@@ -231,7 +232,7 @@ public:
        }
 
        std::future<void> play(int index)
-       {               
+       {
                return executor_.begin_invoke([=]
                {
                        get_layer(index).play();
@@ -239,7 +240,7 @@ public:
        }
 
        std::future<void> stop(int index)
-       {               
+       {
                return executor_.begin_invoke([=]
                {
                        get_layer(index).stop();
@@ -253,15 +254,15 @@ public:
                        layers_.erase(index);
                }, task_priority::high_priority);
        }
-               
+
        std::future<void> clear()
        {
                return executor_.begin_invoke([=]
                {
                        layers_.clear();
                }, task_priority::high_priority);
-       }       
-               
+       }
+
        std::future<void> swap_layers(stage& other, bool swap_transforms)
        {
                auto other_impl = other.impl_;
@@ -270,7 +271,7 @@ public:
                {
                        return make_ready_future();
                }
-               
+
                auto func = [=]
                {
                        auto layers                     = layers_ | boost::adaptors::map_values;
@@ -278,15 +279,15 @@ public:
 
                        for (auto& layer : layers)
                                layer.monitor_output().detach_parent();
-                       
+
                        for (auto& layer : other_layers)
                                layer.monitor_output().detach_parent();
-                       
+
                        std::swap(layers_, other_impl->layers_);
-                                               
+
                        for (auto& layer : layers)
                                layer.monitor_output().attach_parent(monitor_subject_);
-                       
+
                        for (auto& layer : other_layers)
                                layer.monitor_output().attach_parent(monitor_subject_);
 
@@ -338,7 +339,7 @@ public:
                                        auto& other_tween       = other_impl->tweens_[other_index];
                                        std::swap(my_tween, other_tween);
                                }
-                       };              
+                       };
 
                        return executor_.begin_invoke([=]
                        {
@@ -375,7 +376,7 @@ public:
                        return get_layer(index).foreground();
                }, task_priority::high_priority);
        }
-       
+
        std::future<std::shared_ptr<frame_producer>> background(int index)
        {
                return executor_.begin_invoke([=]() -> std::shared_ptr<frame_producer>
@@ -389,9 +390,9 @@ public:
                return executor_.begin_invoke([this]() -> boost::property_tree::wptree
                {
                        boost::property_tree::wptree info;
-                       for (auto& layer : layers_)                     
+                       for (auto& layer : layers_)
                                info.add_child(L"layers.layer", layer.second.info())
-                                       .add(L"index", layer.first);    
+                                       .add(L"index", layer.first);
                        return info;
                }, task_priority::high_priority);
        }
@@ -424,7 +425,7 @@ public:
                        return get_layer(index).delay_info();
                }, task_priority::high_priority));
        }
-       
+
        std::future<std::wstring> call(int index, const std::vector<std::wstring>& params)
        {
                return flatten(executor_.begin_invoke([=]