Don't stall with nvdec

src/audio_core/audio_core.cpp

@@ -57,4 +57,12 @@ void AudioCore::PauseSinks(const bool pausing) const {
     }
 }
 
+void AudioCore::SetNVDECActive(bool active) {
+    nvdec_active = active;
+}
+
+bool AudioCore::IsNVDECActive() const {
+    return nvdec_active;
+}
+
 } // namespace AudioCore

src/audio_core/audio_core.h

@@ -65,6 +65,18 @@ public:
      */
     void PauseSinks(bool pausing) const;
 
+    /**
+     * Toggle NVDEC state, used to avoid stall in playback.
+     *
+     * @param active - Set true if nvdec is active, otherwise false.
+     */
+    void SetNVDECActive(bool active);
+
+    /**
+     * Get NVDEC state.
+     */
+    bool IsNVDECActive() const;
+
 private:
     /**
      * Create the sinks on startup.
@@ -79,6 +91,8 @@ private:
     std::unique_ptr<Sink::Sink> input_sink;
     /// The ADSP in the sysmodule
     std::unique_ptr<AudioRenderer::ADSP::ADSP> adsp;
+    /// Is NVDec currently active?
+    bool nvdec_active{false};
 };
 
 } // namespace AudioCore

src/audio_core/sink/sink_stream.cpp

@@ -9,6 +9,7 @@
 #include <span>
 #include <vector>
 
+#include "audio_core/audio_core.h"
 #include "audio_core/common/common.h"
 #include "audio_core/sink/sink_stream.h"
 #include "common/common_types.h"
@@ -194,7 +195,12 @@ void SinkStream::ProcessAudioOutAndRender(std::span<s16> output_buffer, std::siz
     const std::size_t frame_size_bytes = frame_size * sizeof(s16);
     size_t frames_written{0};
 
-    if (queued_buffers > max_queue_size) {
+    // Due to many frames being queued up with nvdec (5 frames or so?), a lot of buffers also get
+    // queued up (30+) but not all at once, which causes constant stalling here, so just let the
+    // video play out without attempting to stall.
+    // Can hopefully remove this later with a more complete NVDEC implementation.
+    const auto nvdec_active{system.AudioCore().IsNVDECActive()};
+    if (!nvdec_active && queued_buffers > max_queue_size) {
         Stall();
     }