// The actual video mixer, running in its own separate background thread.
+#include <assert.h>
#include <epoxy/gl.h>
+
#undef Success
+
#include <stdbool.h>
#include <stdint.h>
-
-#include <movit/effect_chain.h>
-#include <movit/flat_input.h>
-#include <zita-resampler/resampler.h>
#include <atomic>
+#include <chrono>
#include <condition_variable>
#include <cstddef>
#include <functional>
+#include <map>
#include <memory>
#include <mutex>
+#include <queue>
#include <string>
#include <thread>
#include <vector>
+#include "audio_mixer.h"
#include "bmusb/bmusb.h"
-#include "alsa_output.h"
-#include "ebu_r128_proc.h"
-#include "video_encoder.h"
+#include "defs.h"
#include "httpd.h"
+#include "input_state.h"
+#include "libusb.h"
#include "pbo_frame_allocator.h"
#include "ref_counted_frame.h"
#include "ref_counted_gl_sync.h"
-#include "resampling_queue.h"
#include "theme.h"
#include "timebase.h"
-#include "stereocompressor.h"
-#include "filter.h"
-#include "input_state.h"
-#include "correlation_measurer.h"
+#include "video_encoder.h"
-class QuickSyncEncoder;
+class ALSAOutput;
class QSurface;
+
namespace movit {
class Effect;
class EffectChain;
class FlatInput;
class ResourcePool;
} // namespace movit
-
-namespace movit {
-class YCbCrInput;
-}
class QSurfaceFormat;
// For any card that's not the master (where we pick out the frames as they
output_channel[output].set_color_updated_callback(callback);
}
- typedef std::function<void(float level_lufs, float peak_db,
- float global_level_lufs, float range_low_lufs, float range_high_lufs,
- float gain_staging_db, float final_makeup_gain_db,
- float correlation)> 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(pts());
return theme->map_signal(channel);
}
- unsigned get_audio_source() const
- {
- return audio_source_channel;
- }
-
- void set_audio_source(unsigned channel)
- {
- audio_source_channel = channel;
- }
-
unsigned get_master_clock() const
{
return master_clock_channel;
theme->set_wb(channel, r, g, b);
}
- void set_locut_cutoff(float cutoff_hz)
- {
- locut_cutoff_hz = cutoff_hz;
- }
-
- void set_locut_enabled(bool enabled)
- {
- locut_enabled = enabled;
- }
-
- bool get_locut_enabled() const
- {
- return locut_enabled;
- }
-
- 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;
- }
-
- bool get_limiter_enabled() const
- {
- return limiter_enabled;
- }
-
- void set_compressor_enabled(bool enabled)
- {
- compressor_enabled = enabled;
- }
-
- bool get_compressor_enabled() const
- {
- return compressor_enabled;
- }
-
- void set_gain_staging_db(float gain_db)
- {
- std::unique_lock<std::mutex> lock(compressor_mutex);
- level_compressor_enabled = false;
- gain_staging_db = gain_db;
- }
-
- void set_gain_staging_auto(bool enabled)
- {
- std::unique_lock<std::mutex> lock(compressor_mutex);
- level_compressor_enabled = enabled;
- }
-
- bool get_gain_staging_auto() const
- {
- std::unique_lock<std::mutex> lock(compressor_mutex);
- return level_compressor_enabled;
- }
-
- void set_final_makeup_gain_db(float gain_db)
- {
- std::unique_lock<std::mutex> lock(compressor_mutex);
- final_makeup_gain_auto = false;
- final_makeup_gain = pow(10.0f, gain_db / 20.0f);
- }
-
- void set_final_makeup_gain_auto(bool enabled)
- {
- std::unique_lock<std::mutex> lock(compressor_mutex);
- final_makeup_gain_auto = enabled;
- }
+ // Note: You can also get this through the global variable global_audio_mixer.
+ AudioMixer *get_audio_mixer() { return &audio_mixer; }
+ const AudioMixer *get_audio_mixer() const { return &audio_mixer; }
void schedule_cut()
{
should_cut = true;
}
- void reset_meters();
-
unsigned get_num_cards() const { return num_cards; }
std::string get_card_description(unsigned card_index) const {
return cards[card_index].capture->get_description();
}
- std::map<uint32_t, VideoMode> get_available_video_modes(unsigned card_index) const {
+ std::map<uint32_t, bmusb::VideoMode> get_available_video_modes(unsigned card_index) const {
assert(card_index < num_cards);
return cards[card_index].capture->get_available_video_modes();
}
cards[card_index].capture->set_audio_input(input);
}
+ void change_x264_bitrate(unsigned rate_kbit) {
+ video_encoder->change_x264_bitrate(rate_kbit);
+ }
+
private:
- void configure_card(unsigned card_index, CaptureInterface *capture, bool is_fake_capture);
+ void configure_card(unsigned card_index, bmusb::CaptureInterface *capture, bool is_fake_capture);
void bm_frame(unsigned card_index, uint16_t timecode,
- FrameAllocator::Frame video_frame, size_t video_offset, VideoFormat video_format,
- FrameAllocator::Frame audio_frame, size_t audio_offset, AudioFormat audio_format);
+ bmusb::FrameAllocator::Frame video_frame, size_t video_offset, bmusb::VideoFormat video_format,
+ bmusb::FrameAllocator::Frame audio_frame, size_t audio_offset, bmusb::AudioFormat audio_format);
void bm_hotplug_add(libusb_device *dev);
void bm_hotplug_remove(unsigned card_index);
void place_rectangle(movit::Effect *resample_effect, movit::Effect *padding_effect, float x0, float y0, float x1, float y1);
void handle_hotplugged_cards();
void schedule_audio_resampling_tasks(unsigned dropped_frames, int num_samples_per_frame, int length_per_frame);
void render_one_frame(int64_t duration);
- void send_audio_level_callback();
void audio_thread_func();
- void process_audio_one_frame(int64_t frame_pts_int, int num_samples);
void subsample_chroma(GLuint src_tex, GLuint dst_dst);
void release_display_frame(DisplayFrame *frame);
double pts() { return double(pts_int) / TIMEBASE; }
std::mutex bmusb_mutex;
bool has_bmusb_thread = false;
struct CaptureCard {
- CaptureInterface *capture = nullptr;
+ bmusb::CaptureInterface *capture = nullptr;
bool is_fake_capture;
std::unique_ptr<PBOFrameAllocator> frame_allocator;
// frame rate is integer, will always stay zero.
unsigned fractional_samples = 0;
- std::mutex audio_mutex;
- std::unique_ptr<ResamplingQueue> resampling_queue; // Under audio_mutex.
int last_timecode = -1; // Unwrapped.
- int64_t next_local_pts = 0; // Beginning of next frame, in TIMEBASE units.
};
- CaptureCard cards[MAX_CARDS]; // protected by <bmusb_mutex>
- void get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_CARDS], bool has_new_frame[MAX_CARDS], int num_samples[MAX_CARDS]);
+ CaptureCard cards[MAX_VIDEO_CARDS]; // protected by <bmusb_mutex>
+ AudioMixer audio_mixer; // Same as global_audio_mixer (see audio_mixer.h).
+ void get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS], bool has_new_frame[MAX_VIDEO_CARDS], int num_samples[MAX_VIDEO_CARDS]);
InputState input_state;
std::atomic<bool> should_quit{false};
std::atomic<bool> should_cut{false};
- audio_level_callback_t audio_level_callback = nullptr;
- mutable std::mutex compressor_mutex;
- Ebu_r128_proc r128; // Under compressor_mutex.
- CorrelationMeasurer correlation; // Under compressor_mutex.
-
- Resampler peak_resampler;
- std::atomic<float> peak{0.0f};
-
- StereoFilter locut; // Default cutoff 120 Hz, 24 dB/oct.
- std::atomic<float> locut_cutoff_hz;
- std::atomic<bool> locut_enabled{true};
-
- // First compressor; takes us up to about -12 dBFS.
- StereoCompressor level_compressor; // Under compressor_mutex. Used to set/override gain_staging_db if <level_compressor_enabled>.
- float gain_staging_db = 0.0f; // Under compressor_mutex.
- bool level_compressor_enabled = true; // Under compressor_mutex.
-
- static constexpr float ref_level_dbfs = -14.0f; // Chosen so that we end up around 0 LU in practice.
- static constexpr float ref_level_lufs = -23.0f; // 0 LU, more or less by definition.
-
- 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};
-
- double final_makeup_gain = 1.0; // Under compressor_mutex. Read/write by the user. Note: Not in dB, we want the numeric precision so that we can change it slowly.
- bool final_makeup_gain_auto = true; // Under compressor_mutex.
-
std::unique_ptr<ALSAOutput> alsa;
struct AudioTask {
int64_t pts_int;
int num_samples;
+ bool adjust_rate;
};
std::mutex audio_mutex;
std::condition_variable audio_task_queue_changed;
std::queue<AudioTask> audio_task_queue; // Under audio_mutex.
// For mode scanning.
- bool is_mode_scanning[MAX_CARDS]{ false };
- std::vector<uint32_t> mode_scanlist[MAX_CARDS];
- unsigned mode_scanlist_index[MAX_CARDS]{ 0 };
- timespec last_mode_scan_change[MAX_CARDS];
+ bool is_mode_scanning[MAX_VIDEO_CARDS]{ false };
+ std::vector<uint32_t> mode_scanlist[MAX_VIDEO_CARDS];
+ unsigned mode_scanlist_index[MAX_VIDEO_CARDS]{ 0 };
+ std::chrono::steady_clock::time_point last_mode_scan_change[MAX_VIDEO_CARDS];
};
extern Mixer *global_mixer;
projects / nageru / blobdiff