Make audio input source selectable.

[nageru] / mixer.cpp

diff --git a/mixer.cpp b/mixer.cpp
index 4b92041396bb896f67fa806c171d5edc7340c88b..133fc28108a9b50e68e1e7ffa46848313a5e3d65 100644 (file)
--- a/mixer.cpp
+++ b/mixer.cpp
@@ -692,6 +692,11 @@ void Mixer::process_audio_one_frame(int64_t frame_pts_int, int num_samples)
 {
        vector<float> samples_card;
        vector<float> samples_out;
+
+       // TODO: Allow mixing audio from several sources.
+       unsigned selected_audio_card = theme->map_signal(audio_source_channel);
+       assert(selected_audio_card < num_cards);
+
        for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
                samples_card.resize(num_samples * 2);
                {
@@ -700,8 +705,7 @@ void Mixer::process_audio_one_frame(int64_t frame_pts_int, int num_samples)
                                printf("Card %d reported previous underrun.\n", card_index);
                        }
                }
-               // TODO: Allow using audio from the other card(s) as well.
-               if (card_index == 0) {
+               if (card_index == selected_audio_card) {
                        samples_out = move(samples_card);
                }
        }