Monorepo for Aesthetic.Computer
aesthetic.computer
fix: remove HDMI audio, revert playback buffer, strip codec verbs
Restore audio_init to match original working state:
- Remove HDMI PCM open (exhausts HDA controller streams, blocks capture)
- Revert playback buffer from 6 periods back to 3 (original value)
- Remove HDA codec verb section (not in original working code)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
+5
-58
+5
-58
fedac/native/src/audio.c
+5
-58
fedac/native/src/audio.c
···
783
783
snd_pcm_uframes_t period = AUDIO_PERIOD_SIZE;
784
784
snd_pcm_hw_params_set_period_size_near(pcm, params, &period, 0);
785
785
786
-
snd_pcm_uframes_t buffer_size = AUDIO_PERIOD_SIZE * 6; // 6 periods for better underrun tolerance
786
+
snd_pcm_uframes_t buffer_size = AUDIO_PERIOD_SIZE * 3; // 3 periods (~3ms total at 192kHz)
787
787
snd_pcm_hw_params_set_buffer_size_near(pcm, params, &buffer_size);
788
788
789
789
err = snd_pcm_hw_params(pcm, params);
···
867
867
fprintf(stderr, "[audio] Cannot open mixer\n");
868
868
}
869
869
870
-
// Force-unmute via HDA codec verbs (bypasses ALSA mixer abstraction)
871
-
// ALC257: Node 0x14 = Speaker, Node 0x21 = HP Out
872
-
// Pin Widget Control verb (0x707) with OUT enabled (0x40)
873
-
// Amp Gain/Mute verb: 0x3 = set output amp, 0xb0 = unmute + gain
874
-
{
875
-
FILE *codec = fopen("/proc/asound/card0/codec#0", "r");
876
-
if (codec) {
877
-
fprintf(stderr, "[audio] HDA codec found, sending unmute verbs\n");
878
-
fclose(codec);
879
-
// Write verbs to hwdep (if available) — fallback: use sysfs
880
-
char verb_path[128];
881
-
snprintf(verb_path, sizeof(verb_path), "/sys/class/sound/hwC0D0/init_pin_configs");
882
-
if (access(verb_path, F_OK) == 0)
883
-
fprintf(stderr, "[audio] HDA sysfs: %s\n", verb_path);
884
-
}
885
-
}
886
-
887
870
// Read initial system volume
888
871
audio->system_volume = read_system_volume_card(card_idx);
889
872
fprintf(stderr, "[audio] System volume: %d%%\n", audio->system_volume);
890
873
891
-
// Try to open HDMI audio device (non-blocking, best-effort)
892
-
{
893
-
// Intel HDA HDMI subdevices: device 3, 7, 8 on card 0 or 1
894
-
const char *hdmi_devs[] = {
895
-
"hdmi:0,0", "hdmi:0,1", "hdmi:0,2", "hdmi:0,3",
896
-
"hdmi:1,0", "hdmi:1,1",
897
-
"plughw:0,3", "plughw:0,7", "plughw:0,8",
898
-
"plughw:1,3", "plughw:1,7",
899
-
NULL
900
-
};
901
-
for (int hi = 0; hdmi_devs[hi] && !audio->hdmi_pcm; hi++) {
902
-
snd_pcm_t *hpcm = NULL;
903
-
if (snd_pcm_open(&hpcm, hdmi_devs[hi], SND_PCM_STREAM_PLAYBACK,
904
-
SND_PCM_NONBLOCK) != 0) continue;
905
-
snd_pcm_hw_params_t *hp;
906
-
snd_pcm_hw_params_alloca(&hp);
907
-
if (snd_pcm_hw_params_any(hpcm, hp) < 0 ||
908
-
snd_pcm_hw_params_set_access(hpcm, hp, SND_PCM_ACCESS_RW_INTERLEAVED) < 0 ||
909
-
snd_pcm_hw_params_set_format(hpcm, hp, SND_PCM_FORMAT_S16_LE) < 0 ||
910
-
snd_pcm_hw_params_set_channels(hpcm, hp, 2) < 0) {
911
-
snd_pcm_close(hpcm); continue;
912
-
}
913
-
unsigned int hrate = 48000;
914
-
snd_pcm_hw_params_set_rate_near(hpcm, hp, &hrate, NULL);
915
-
snd_pcm_uframes_t hperiod = 512;
916
-
snd_pcm_hw_params_set_period_size_near(hpcm, hp, &hperiod, NULL);
917
-
if (snd_pcm_hw_params(hpcm, hp) < 0) { snd_pcm_close(hpcm); continue; }
918
-
snd_pcm_prepare(hpcm);
919
-
audio->hdmi_pcm = hpcm;
920
-
audio->hdmi_rate = hrate;
921
-
audio->hdmi_period_size = (int)hperiod;
922
-
// Downsample ratio: every N primary samples → 1 HDMI sample
923
-
audio->hdmi_downsample_n = (int)((double)rate / hrate + 0.5);
924
-
if (audio->hdmi_downsample_n < 1) audio->hdmi_downsample_n = 1;
925
-
fprintf(stderr, "[audio] HDMI audio: %s @ %uHz, downsample 1/%d\n",
926
-
hdmi_devs[hi], hrate, audio->hdmi_downsample_n);
927
-
}
928
-
if (!audio->hdmi_pcm)
929
-
fprintf(stderr, "[audio] No HDMI audio device\n");
930
-
}
874
+
// HDMI audio disabled — opening HDMI PCM streams on the same HDA controller
875
+
// can exhaust controller streams and cause EIO on capture.
876
+
audio->hdmi_pcm = NULL;
877
+
fprintf(stderr, "[audio] HDMI audio: disabled\n");
931
878
932
879
// Start audio thread
933
880
audio->running = 1;