diff options
Diffstat (limited to 'src/test_demo.cc')
| -rw-r--r-- | src/test_demo.cc | 81 |
1 files changed, 43 insertions, 38 deletions
diff --git a/src/test_demo.cc b/src/test_demo.cc index bb92446..887258b 100644 --- a/src/test_demo.cc +++ b/src/test_demo.cc @@ -145,6 +145,8 @@ int main(int argc, char** argv) { int height = 720; const char* log_peaks_file = nullptr; bool log_peaks_fine = false; + // Seek time needs to be declared here to be accessible globally for the loop. + float seek_time = 0.0f; #if !defined(STRIP_ALL) // Early exit for invalid options @@ -227,6 +229,7 @@ int main(int argc, char** argv) { if (tempo_test_enabled) { // Each bar = 2 seconds at 120 BPM (4 beats) const float bar_duration = 2.0f; + // Use physical_time for tempo modulation progression const int bar_number = (int)(physical_time / bar_duration); const float bar_progress = fmodf((float)physical_time, bar_duration) / @@ -265,21 +268,19 @@ int main(int argc, char** argv) { if (log_peaks_file) { peak_log = fopen(log_peaks_file, "w"); if (peak_log) { - fprintf(peak_log, "# Audio peak log from test_demo\n"); - fprintf(peak_log, "# Mode: %s\n", + fprintf(peak_log, "// Audio peak log from test_demo\n"); + fprintf(peak_log, "// Mode: %s\n", log_peaks_fine ? "fine (per-frame)" : "beat-aligned"); - fprintf(peak_log, "# To plot with gnuplot:\n"); + fprintf(peak_log, "// To plot with gnuplot:\n"); fprintf(peak_log, - "# gnuplot -p -e \"set xlabel 'Time (s)'; set ylabel 'Peak'; " - "plot '%s' using 2:3 with lines title 'Raw Peak'\"\n", + "// gnuplot -p -e \"set xlabel 'Time (s)'; set ylabel 'Peak'; plot '%s' using 2:3 with lines title 'Raw Peak'\"\n", log_peaks_file); if (log_peaks_fine) { - fprintf(peak_log, - "# Columns: frame_number clock_time raw_peak beat_number\n"); + fprintf(peak_log, "// Columns: frame_number clock_time raw_peak beat_number\n"); } else { - fprintf(peak_log, "# Columns: beat_number clock_time raw_peak\n"); + fprintf(peak_log, "// Columns: beat_number clock_time raw_peak\n"); } - fprintf(peak_log, "#\n"); + fprintf(peak_log, "//\n"); } else { fprintf(stderr, "Warning: Could not open log file '%s'\n", log_peaks_file); @@ -301,35 +302,36 @@ int main(int argc, char** argv) { gpu_resize(last_width, last_height); } - const double physical_time = platform_state.time; + // Graphics frame time - derived from platform's clock + const double current_physical_time = platform_state.time + seek_time; + // Audio playback time - master clock for audio events + const float current_audio_time = audio_get_playback_time(); + // Delta time for audio processing, based on audio clock + const float audio_dt = current_audio_time - g_last_audio_time; + g_last_audio_time = current_audio_time; - // Auto-exit at end (based on physical time for reliability) - if (demo_duration > 0.0f && physical_time >= demo_duration) { + // Auto-exit at end (based on physical time for graphics loop consistency) + if (demo_duration > 0.0f && current_physical_time >= demo_duration) { #if !defined(STRIP_ALL) - printf("test_demo finished at %.2f seconds.\n", physical_time); + printf("test_demo finished at %.2f seconds. Exiting...\n", current_physical_time); #endif break; } - // Calculate stable audio dt for jitter-free tracker updates - const float audio_time = audio_get_playback_time(); - const float audio_dt = audio_time - g_last_audio_time; - g_last_audio_time = audio_time; + // This fill_audio_buffer call is crucial for audio system to process + // events based on the *current audio time* and *graphics physical time* context + fill_audio_buffer(audio_dt, current_physical_time); - fill_audio_buffer(audio_dt, physical_time); - - // Audio-visual synchronization: Use audio playback time (not physical - // time!) This accounts for ring buffer latency automatically (no hardcoded - // constants) - - // Audio/visual sync parameters + // --- Graphics Update --- const float aspect_ratio = platform_state.aspect_ratio; - // Peak is measured at audio playback time, so it matches audio_time + + // Peak value derived from audio, but used for visual effect intensity const float raw_peak = audio_get_realtime_peak(); const float visual_peak = fminf(raw_peak * 8.0f, 1.0f); - // Beat calculation uses AUDIO TIME (what's being heard), not physical time - const float beat_time = audio_time * 120.0f / 60.0f; + // Beat calculation should use audio time to align with audio events. + // The graphics loop time (current_physical_time) is used for frame rate. + const float beat_time = current_audio_time * 120.0f / 60.0f; const int beat_number = (int)beat_time; const float beat = fmodf(beat_time, 1.0f); @@ -345,30 +347,33 @@ int main(int argc, char** argv) { raw_peak, beat_number); } else if (beat_number != last_beat_logged) { // Log only at beat boundaries - fprintf(peak_log, "%d %.6f %.6f\n", beat_number, audio_time, raw_peak); + fprintf(peak_log, "%d %.6f %.6f\n", beat_number, current_audio_time, raw_peak); last_beat_logged = beat_number; } } frame_number++; - // Debug output every 0.5 seconds (based on audio time for consistency) - static float last_print_time = -1.0f; - if (audio_time - last_print_time >= 0.5f) { + // Debug output every 0.5 seconds (based on graphics time for consistency) + static float last_graphics_print_time = -1.0f; + if (current_physical_time - last_graphics_print_time >= 0.5f) { if (tempo_test_enabled) { printf( - "[AudioT=%.2f, PhysT=%.2f, MusicT=%.2f, Beat=%d, Frac=%.2f, " - "Peak=%.2f, Tempo=%.2fx]\n", - audio_time, (float)physical_time, g_music_time, beat_number, beat, + "[GraphicsT=%.2f, AudioT=%.2f, MusicT=%.2f, Beat=%d, Frac=%.2f, Peak=%.2f, Tempo=%.2fx]\n", + current_physical_time, current_audio_time, g_music_time, beat_number, beat, visual_peak, g_tempo_scale); } else { - printf("[AudioT=%.2f, Beat=%d, Frac=%.2f, Peak=%.2f]\n", audio_time, - beat_number, beat, visual_peak); + printf("[GraphicsT=%.2f, AudioT=%.2f, Beat=%d, Frac=%.2f, Peak=%.2f]\n", + current_physical_time, current_audio_time, beat_number, beat, visual_peak); } - last_print_time = audio_time; + last_graphics_print_time = current_physical_time; } #endif - gpu_draw(visual_peak, aspect_ratio, audio_time, beat); + // Draw graphics using the graphics frame time and synchronized audio events + const float graphics_frame_time = (float)current_physical_time; + gpu_draw(visual_peak, aspect_ratio, graphics_frame_time, beat); + + // Update audio systems (tracker, synth, etc.) based on audio time progression audio_update(); } |