mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-03 09:01:54 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

example: improve volume meter output

Browse source
This commit is contained in:
Wim Taymans 2022-09-15 16:35:44 +02:00
parent 01fedfb9cd
commit 92deb1d868
1 changed files with 5 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/examples/audio-capture.c
View file

@ -59,7 +59,7 @@ static void on_process(void *userdata)
struct pw_buffer *b; struct pw_buffer *b;
struct spa_buffer *buf; struct spa_buffer *buf;
float *samples, max; float *samples, max;
uint32_t c, n, n_channels, n_samples; uint32_t c, n, n_channels, n_samples, peak;
if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) { if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) {
pw_log_warn("out of buffers: %m"); pw_log_warn("out of buffers: %m");
@ -79,8 +79,10 @@ static void on_process(void *userdata)
for (n = c; n < n_samples; n += n_channels) for (n = c; n < n_samples; n += n_channels)
max = fmaxf(max, fabsf(samples[n])); max = fmaxf(max, fabsf(samples[n]));
fprintf(stdout, "channel %d: peak:%f %*s %*s\n", peak = SPA_CLAMP(max * 30, 0, 39);
c, max, (int)(max * 30.0f), "*", 30, "");
fprintf(stdout, "channel %d: |%*s%*s| peak:%f\n",
c, peak+1, "*", 40 - peak, "", max);
} }
/* move cursor up */ /* move cursor up */
fprintf(stdout, "%c[%dA", 0x1b, n_channels + 1); fprintf(stdout, "%c[%dA", 0x1b, n_channels + 1);