Add an option --flat-audio to start with almost all the audio processing turned off.

[nageru] / mixer.cpp

diff --git a/mixer.cpp b/mixer.cpp
index f0b06941225fb78d2e8f1ac35ac89698a7077413..1f1035bf84065ef9c7ccca19afb8a5a51a1075e0 100644 (file)
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -114,15 +114,19 @@ string generate_local_dump_filename(int frame)
 void QueueLengthPolicy::update_policy(int queue_length)
 {
        if (queue_length < 0) {  // Starvation.
-               if (safe_queue_length < 5) {
+               if (been_at_safe_point_since_last_starvation && safe_queue_length < 5) {
                        ++safe_queue_length;
                        fprintf(stderr, "Card %u: Starvation, increasing safe limit to %u frames\n",
                                card_index, safe_queue_length);
                }
                frames_with_at_least_one = 0;
+               been_at_safe_point_since_last_starvation = false;
                return;
        }
        if (queue_length > 0) {
+               if (queue_length >= int(safe_queue_length)) {
+                       been_at_safe_point_since_last_starvation = true;
+               }
                if (++frames_with_at_least_one >= 50 && safe_queue_length > 0) {
                        --safe_queue_length;
                        fprintf(stderr, "Card %u: Spare frames for more than 50 frames, reducing safe limit to %u frames\n",
@@ -155,7 +159,7 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards)
        movit_texel_subpixel_precision /= 2.0;
 
        resource_pool.reset(new ResourcePool);
-       theme.reset(new Theme("theme.lua", resource_pool.get(), num_cards));
+       theme.reset(new Theme(global_flags.theme_filename.c_str(), resource_pool.get(), num_cards));
        for (unsigned i = 0; i < NUM_OUTPUTS; ++i) {
                output_channel[i].parent = this;
        }
@@ -257,6 +261,14 @@ Mixer::Mixer(const QSurfaceFormat &format, unsigned num_cards)
 
        locut.init(FILTER_HPF, 2);
 
+       // If --flat-audio is given, turn off everything that messes with the sound,
+       // except the final makeup gain.
+       if (global_flags.flat_audio) {
+               set_locut_enabled(false);
+               set_limiter_enabled(false);
+               set_compressor_enabled(false);
+       }
+
        // hlen=16 is pretty low quality, but we use quite a bit of CPU otherwise,
        // and there's a limit to how important the peak meter is.
        peak_resampler.setup(OUTPUT_FREQUENCY, OUTPUT_FREQUENCY * 4, /*num_channels=*/2, /*hlen=*/16, /*frel=*/1.0);
@@ -529,7 +541,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode,
 
                GLuint pbo = userdata->pbo;
                check_error();
-               glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
+               glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
                check_error();
                glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, video_frame.size);
                check_error();
@@ -544,7 +556,7 @@ void Mixer::bm_frame(unsigned card_index, uint16_t timecode,
                check_error();
                glBindTexture(GL_TEXTURE_2D, 0);
                check_error();
-               glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
+               glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
                check_error();
                RefCountedGLsync fence(GL_SYNC_GPU_COMMANDS_COMPLETE, /*flags=*/0);
                check_error();