Add a compressor (kindly relicensed by Rune Holm). Fixed for now, and only to get...

[nageru] / mixer.h

diff --git a/mixer.h b/mixer.h
index b2561d15c0b395f2d82e2a5d92b682b7ab634942..8ac322fd921f66e902d02fc76202e1de957674a9 100644 (file)
--- a/mixer.h
+++ b/mixer.h
@@ -5,18 +5,40 @@
 
 #include <epoxy/gl.h>
 #undef Success
+#include <stdbool.h>
+#include <stdint.h>
+
 #include <movit/effect_chain.h>
 #include <movit/flat_input.h>
+#include <condition_variable>
+#include <cstddef>
 #include <functional>
-
-#include "bmusb.h"
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include "bmusb/bmusb.h"
+#include "ebu_r128_proc.h"
 #include "h264encode.h"
+#include "httpd.h"
 #include "pbo_frame_allocator.h"
 #include "ref_counted_frame.h"
 #include "ref_counted_gl_sync.h"
+#include "resampler.h"
 #include "theme.h"
+#include "timebase.h"
+#include "stereocompressor.h"
 
-#define NUM_CARDS 2
+class H264Encoder;
+class QSurface;
+namespace movit {
+class Effect;
+class EffectChain;
+class FlatInput;
+class ResourcePool;
+}  // namespace movit
 
 namespace movit {
 class YCbCrInput;
@@ -27,7 +49,7 @@ class QSurfaceFormat;
 class Mixer {
 public:
        // The surface format is used for offscreen destinations for OpenGL contexts we need.
-       Mixer(const QSurfaceFormat &format);
+       Mixer(const QSurfaceFormat &format, unsigned num_cards);
        ~Mixer();
        void start();
        void quit();
@@ -38,11 +60,8 @@ public:
        enum Output {
                OUTPUT_LIVE = 0,
                OUTPUT_PREVIEW,
-               OUTPUT_INPUT0,
-               OUTPUT_INPUT1,
-               OUTPUT_INPUT2,
-               OUTPUT_INPUT3,
-               NUM_OUTPUTS
+               OUTPUT_INPUT0,  // 1, 2, 3, up to 15 follow numerically.
+               NUM_OUTPUTS = 18
        };
 
        struct DisplayFrame {
@@ -77,19 +96,50 @@ public:
                output_channel[output].set_frame_ready_callback(callback);
        }
 
+       typedef std::function<void(float, float, float, float, float)> audio_level_callback_t;
+       void set_audio_level_callback(audio_level_callback_t callback)
+       {
+               audio_level_callback = callback;
+       }
+
        std::vector<std::string> get_transition_names()
        {
-               return theme->get_transition_names(frame / 60.0);
+               return theme->get_transition_names(pts());
+       }
+
+       unsigned get_num_channels() const
+       {
+               return theme->get_num_channels();
+       }
+
+       std::string get_channel_name(unsigned channel) const
+       {
+               return theme->get_channel_name(channel);
+       }
+
+       bool get_supports_set_wb(unsigned channel) const
+       {
+               return theme->get_supports_set_wb(channel);
+       }
+
+       void set_wb(unsigned channel, double r, double g, double b) const
+       {
+               theme->set_wb(channel, r, g, b);
        }
 
 private:
-       void bm_frame(int card_index, uint16_t timecode,
+       void bm_frame(unsigned card_index, uint16_t timecode,
                FrameAllocator::Frame video_frame, size_t video_offset, uint16_t video_format,
                FrameAllocator::Frame audio_frame, size_t audio_offset, uint16_t audio_format);
        void place_rectangle(movit::Effect *resample_effect, movit::Effect *padding_effect, float x0, float y0, float x1, float y1);
        void thread_func();
+       void process_audio_one_frame();
        void subsample_chroma(GLuint src_tex, GLuint dst_dst);
        void release_display_frame(DisplayFrame *frame);
+       double pts() { return double(pts_int) / TIMEBASE; }
+
+       HTTPD httpd;
+       unsigned num_cards;
 
        QSurface *mixer_surface, *h264_encoder_surface;
        std::unique_ptr<movit::ResourcePool> resource_pool;
@@ -101,7 +151,7 @@ private:
        // Effects part of <display_chain>. Owned by <display_chain>.
        movit::FlatInput *display_input;
 
-       int frame = 0;
+       int64_t pts_int = 0;  // In TIMEBASE units.
 
        std::mutex bmusb_mutex;
        struct CaptureCard {
@@ -113,13 +163,19 @@ private:
                QOpenGLContext *context;
 
                bool new_data_ready = false;  // Whether new_frame contains anything.
+               bool should_quit = false;
                RefCountedFrame new_frame;
                GLsync new_data_ready_fence;  // Whether new_frame is ready for rendering.
                std::condition_variable new_data_ready_changed;  // Set whenever new_data_ready is changed.
+               unsigned dropped_frames = 0;  // Before new_frame.
+
+               std::mutex audio_mutex;
+               std::unique_ptr<Resampler> resampler;  // Under audio_mutex.
+               int last_timecode = -1;  // Unwrapped.
        };
-       CaptureCard cards[NUM_CARDS];  // protected by <bmusb_mutex>
+       CaptureCard cards[MAX_CARDS];  // protected by <bmusb_mutex>
 
-       RefCountedFrame bmusb_current_rendering_frame[NUM_CARDS];
+       RefCountedFrame bmusb_current_rendering_frame[MAX_CARDS];
 
        class OutputChannel {
        public:
@@ -142,6 +198,14 @@ private:
 
        std::thread mixer_thread;
        bool should_quit = false;
+
+       audio_level_callback_t audio_level_callback = nullptr;
+       Ebu_r128_proc r128;
+
+       // TODO: Implement oversampled peak detection.
+       float peak = 0.0f;
+
+       StereoCompressor compressor;
 };
 
 extern Mixer *global_mixer;