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ae: don't go over 1/100 sec exposure too easily

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This commit is contained in:
Pavel Machek
2024-09-07 22:42:35 +02:00
parent bfe76b7568
commit 95f474076c
1 changed files with 22 additions and 5 deletions
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27
src/process_pipeline.c
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@@ -493,6 +493,15 @@ update_exp(controlstate *control, int direction)
control->value_req = control->value + (step * direction);
}
static int exposure_limit;
static double sec_per_line()
{
/* FIXME: may be approximate -- width/height should include blank areas */
double PCK = state_proc.mode->width * state_proc.mode->height * 30;
return state_proc.mode->width / PCK;
}
static void
summarize()
{
@@ -501,10 +510,7 @@ summarize()
char *sep = portrait ? " " : "\n";
char buf[2048];
/* FIXME: may be approximate -- width/height should include blank areas */
double PCK = state_proc.mode->width * state_proc.mode->height * 30;
double per_line = state_proc.mode->width / PCK;
time = state_proc.exposure.value * per_line;
time = state_proc.exposure.value * sec_per_line();
/* Gain */
gain = state_proc.gain.value / ((float) state_proc.gain.min);
@@ -568,7 +574,7 @@ process_aaa()
if (direction > 0) {
// Preview is too dark
// Try raising the exposure time first
if (state_proc.exposure.value < state_proc.exposure.max) {
if (state_proc.exposure.value < exposure_limit) {
update_exp(&state_proc.exposure, direction);
printf("Expose + %d\n",
state_proc.exposure.value_req);
@@ -576,6 +582,10 @@ process_aaa()
// Raise sensor gain if exposure limit is hit
update_exp(&state_proc.gain, direction);
printf("Gain + %d\n", state_proc.gain.value_req);
} else if (state_proc.exposure.value < state_proc.exposure.max) {
update_exp(&state_proc.exposure, direction);
printf("L/Expose + %d\n",
state_proc.exposure.value_req);
} else if (state_proc.dgain.value < state_proc.dgain.max) {
// Raise sensor dgain if out of ananlog gain
update_exp(&state_proc.dgain, direction);
@@ -589,6 +599,10 @@ process_aaa()
if (state_proc.dgain.value > state_proc.dgain.min) {
update_exp(&state_proc.dgain, direction);
printf("D/Gain - %d\n", state_proc.gain.value_req);
} else if (state_proc.exposure.value > exposure_limit) {
update_exp(&state_proc.exposure, direction);
printf("L/Expose - %d\n",
state_proc.exposure.value_req);
} else if (state_proc.gain.value > state_proc.gain.min) {
update_exp(&state_proc.gain, direction);
printf("Gain - %d\n", state_proc.gain.value_req);
@@ -1500,6 +1514,9 @@ update_state(MPPipeline *pipeline, const mp_state_proc *new_state)
on_output_changed(format_changed);
}
exposure_limit = 0.01 / sec_per_line();
printf("Exposure limit: %d\n", exposure_limit);
mp_state_main new_main = {
.camera = pr_camera,
.has_auto_focus_continuous = false,