OBJS += glwidget.moc.o mainwindow.moc.o vumeter.moc.o lrameter.moc.o correlation_meter.moc.o aboutdialog.moc.o ellipsis_label.moc.o input_mapping_dialog.moc.o nonlinear_fader.moc.o
# Mixer objects
-OBJS += mixer.o audio_mixer.o pbo_frame_allocator.o context.o ref_counted_frame.o theme.o resampling_queue.o httpd.o ebu_r128_proc.o flags.o image_input.o stereocompressor.o filter.o alsa_input.o alsa_output.o correlation_measurer.o disk_space_estimator.o
+AUDIO_MIXER_OBJS = audio_mixer.o alsa_input.o ebu_r128_proc.o stereocompressor.o resampling_queue.o flags.o correlation_measurer.o filter.o disk_space_estimator.o
+OBJS += mixer.o pbo_frame_allocator.o context.o ref_counted_frame.o theme.o httpd.o flags.o image_input.o alsa_output.o disk_space_estimator.o $(AUDIO_MIXER_OBJS)
# Streaming and encoding objects
OBJS += quicksync_encoder.o x264_encoder.o x264_speed_control.o video_encoder.o metacube2.o mux.o audio_encoder.o ffmpeg_raii.o
OBJS += bmusb/bmusb.o bmusb/fake_capture.o
endif
+# Benchmark program.
+BM_OBJS = benchmark_audio_mixer.o $(AUDIO_MIXER_OBJS) flags.o
+
%.o: %.cpp
$(CXX) -MMD -MP $(CPPFLAGS) $(CXXFLAGS) -o $@ -c $<
%.o: %.cc
%.moc.cpp: %.h
moc $< -o $@
-all: nageru
+all: nageru benchmark_audio_mixer
nageru: $(OBJS)
$(CXX) -o $@ $^ $(LDFLAGS) $(LDLIBS)
+benchmark_audio_mixer: $(BM_OBJS)
+ $(CXX) -o $@ $^ $(LDFLAGS) $(LDLIBS)
mainwindow.o: mainwindow.cpp ui_mainwindow.h ui_display.h ui_audio_miniview.h ui_audio_expanded_view.h
-include $(DEPS)
clean:
- $(RM) $(OBJS) $(DEPS) nageru ui_aboutdialog.h ui_mainwindow.h ui_display.h ui_about.h ui_audio_miniview.h ui_audio_expanded_view.h aboutdialog.moc.cpp correlation_meter.moc.cpp lrameter.moc.cpp vumeter.moc.cpp glwidget.moc.cpp mainwindow.moc.cpp window.moc.cpp chain-*.frag *.dot
+ $(RM) $(OBJS) $(BM_OBJS) $(DEPS) nageru benchmark_audio_mixer ui_aboutdialog.h ui_mainwindow.h ui_display.h ui_about.h ui_audio_miniview.h ui_audio_expanded_view.h aboutdialog.moc.cpp correlation_meter.moc.cpp lrameter.moc.cpp vumeter.moc.cpp glwidget.moc.cpp mainwindow.moc.cpp window.moc.cpp chain-*.frag *.dot
PREFIX=/usr/local
install:
--- /dev/null
+// Rather simplistic benchmark of AudioMixer. Sets up a simple mapping
+// with the default settings, feeds some white noise to the inputs and
+// runs a while. Useful for e.g. profiling.
+
+#include <stdio.h>
+#include <stdint.h>
+#include <vector>
+#include <chrono>
+#include "audio_mixer.h"
+#include "timebase.h"
+
+#define NUM_BENCHMARK_CARDS 4
+#define NUM_WARMUP_FRAMES 100
+#define NUM_BENCHMARK_FRAMES 1000
+#define NUM_CHANNELS 8
+#define NUM_SAMPLES 1024
+
+using namespace std;
+using namespace std::chrono;
+
+uint8_t samples[(NUM_SAMPLES * NUM_CHANNELS + 1024) * sizeof(uint16_t)];
+
+void callback(float level_lufs, float peak_db,
+ std::vector<AudioMixer::BusLevel> bus_levels,
+ float global_level_lufs, float range_low_lufs, float range_high_lufs,
+ float final_makeup_gain_db,
+ float correlation)
+{
+ // Empty.
+}
+
+int main(void)
+{
+ for (unsigned i = 0; i < NUM_SAMPLES * NUM_CHANNELS + 1024; ++i) {
+ samples[i] = rand() & 0xff;
+ }
+ AudioMixer mixer(NUM_BENCHMARK_CARDS);
+ mixer.set_audio_level_callback(callback);
+
+ InputMapping mapping;
+
+ InputMapping::Bus bus1;
+ bus1.device = DeviceSpec{InputSourceType::CAPTURE_CARD, 0};
+ bus1.source_channel[0] = 0;
+ bus1.source_channel[1] = 1;
+ mapping.buses.push_back(bus1);
+
+ InputMapping::Bus bus2;
+ bus2.device = DeviceSpec{InputSourceType::CAPTURE_CARD, 3};
+ bus2.source_channel[0] = 6;
+ bus2.source_channel[1] = 4;
+ mapping.buses.push_back(bus2);
+
+ mixer.set_input_mapping(mapping);
+
+ size_t out_samples = 0;
+
+ steady_clock::time_point start, end;
+ for (unsigned i = 0; i < NUM_WARMUP_FRAMES + NUM_BENCHMARK_FRAMES; ++i) {
+ if (i == NUM_WARMUP_FRAMES) {
+ start = steady_clock::now();
+ }
+ // Feed the inputs.
+ for (unsigned card_index = 0; card_index < NUM_BENCHMARK_CARDS; ++card_index) {
+ bmusb::AudioFormat audio_format;
+ audio_format.bits_per_sample = 16;
+ audio_format.num_channels = NUM_CHANNELS;
+
+ unsigned num_samples = NUM_SAMPLES + (rand() % 9) - 5;
+ bool ok = mixer.add_audio(DeviceSpec{InputSourceType::CAPTURE_CARD, card_index}, samples, num_samples, audio_format, NUM_SAMPLES * TIMEBASE / OUTPUT_FREQUENCY);
+ assert(ok);
+ }
+
+ double pts = double(i) * NUM_SAMPLES / OUTPUT_FREQUENCY;
+ vector<float> output = mixer.get_output(pts, NUM_SAMPLES, ResamplingQueue::ADJUST_RATE);
+ if (i >= NUM_WARMUP_FRAMES) {
+ out_samples += output.size();
+ }
+ }
+ end = steady_clock::now();
+
+ double elapsed = duration<double>(end - start).count();
+ double simulated = double(out_samples) / (OUTPUT_FREQUENCY * 2);
+ printf("%ld samples produced in %.1f ms (%.1f%% CPU, %.1fx realtime).\n",
+ out_samples, elapsed * 1e3, 100.0 * elapsed / simulated, simulated / elapsed);
+}