#include <movit/effect_chain.h>
#include <movit/flat_input.h>
+#include <zita-resampler/resampler.h>
#include <atomic>
#include <condition_variable>
#include <cstddef>
#include <vector>
#include "bmusb/bmusb.h"
+#include "alsa_output.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 "resampling_queue.h"
#include "theme.h"
#include "timebase.h"
#include "stereocompressor.h"
locut_cutoff_hz = cutoff_hz;
}
+ float get_limiter_threshold_dbfs()
+ {
+ return limiter_threshold_dbfs;
+ }
+
+ float get_compressor_threshold_dbfs()
+ {
+ return compressor_threshold_dbfs;
+ }
+
+ void set_limiter_threshold_dbfs(float threshold_dbfs)
+ {
+ limiter_threshold_dbfs = threshold_dbfs;
+ }
+
+ void set_compressor_threshold_dbfs(float threshold_dbfs)
+ {
+ compressor_threshold_dbfs = threshold_dbfs;
+ }
+
+ void set_limiter_enabled(bool enabled)
+ {
+ limiter_enabled = enabled;
+ }
+
+ void set_compressor_enabled(bool enabled)
+ {
+ compressor_enabled = enabled;
+ }
+
+ void reset_meters();
+
private:
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 audio_thread_func();
+ void process_audio_one_frame(int64_t frame_pts_int);
void subsample_chroma(GLuint src_tex, GLuint dst_dst);
void release_display_frame(DisplayFrame *frame);
double pts() { return double(pts_int) / TIMEBASE; }
unsigned dropped_frames = 0; // Before new_frame.
std::mutex audio_mutex;
- std::unique_ptr<Resampler> resampler; // Under audio_mutex.
+ std::unique_ptr<ResamplingQueue> resampling_queue; // Under audio_mutex.
int last_timecode = -1; // Unwrapped.
};
CaptureCard cards[MAX_CARDS]; // protected by <bmusb_mutex>
OutputChannel output_channel[NUM_OUTPUTS];
std::thread mixer_thread;
- bool should_quit = false;
+ std::thread audio_thread;
+ std::atomic<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;
+ Resampler peak_resampler;
+ std::atomic<float> peak{0.0f};
StereoFilter locut; // Default cutoff 150 Hz, 24 dB/oct.
std::atomic<float> locut_cutoff_hz;
StereoCompressor level_compressor;
float last_gain_staging_db = 0.0f;
+ static constexpr float ref_level_dbfs = -14.0f;
+
StereoCompressor limiter;
+ std::atomic<float> limiter_threshold_dbfs{ref_level_dbfs + 4.0f}; // 4 dB.
+ std::atomic<bool> limiter_enabled{true};
StereoCompressor compressor;
+ std::atomic<float> compressor_threshold_dbfs{ref_level_dbfs - 12.0f}; // -12 dB.
+ std::atomic<bool> compressor_enabled{true};
+
+ std::unique_ptr<ALSAOutput> alsa;
+
+ std::mutex audio_mutex;
+ std::condition_variable audio_pts_queue_changed;
+ std::queue<int64_t> audio_pts_queue;
};
extern Mixer *global_mixer;