diff options
| -rw-r--r-- | iq.c | 21 | ||||
| -rw-r--r-- | iq.h | 5 | ||||
| -rw-r--r-- | live.c | 2 | ||||
| -rw-r--r-- | snapshot.c | 2 |
4 files changed, 27 insertions, 3 deletions
@@ -61,8 +61,17 @@ void iq_aewb_process(struct iq_tuning *iq, omap3_isp_preview_set_white_balance(iq->isp, gains); - /* Automatic Exposure */ - if ((iq->frame_count++ % 2) == 0) + /* Automatic Exposure + * + * Skip ae_delay frames at stream startup, and only run AE every + * ae_interval frames to take sensor exposure internal delays into + * account. + */ + iq->frame_count++; + if (iq->frame_count <= iqp->ae_delay) + return; + + if ((iq->frame_count - iqp->ae_delay - 1) % iqp->ae_interval) return; mean = stats->accum[0] + stats->accum[1] @@ -97,6 +106,8 @@ void iq_params_init(struct iq_params *params) params->window.top = 0.0; params->window.width = 1.0; params->window.height = 1.0; + params->ae_delay = 1; + params->ae_interval = 2; params->mean_level = 0.15; params->exposure = 1000; params->exposure_min = 10; @@ -137,7 +148,11 @@ int iq_params_parse(struct iq_params *params, const char *arg) size = value - arg; value++; - if (strncmp(arg, "exposure-def", size) == 0) + if (strncmp(arg, "ae-delay", size) == 0) + val_uint = ¶ms->ae_delay; + else if (strncmp(arg, "ae-interval", size) == 0) + val_uint = ¶ms->ae_interval; + else if (strncmp(arg, "exposure-def", size) == 0) val_uint = ¶ms->exposure; else if (strncmp(arg, "exposure-min", size) == 0) val_uint = ¶ms->exposure_min; @@ -30,6 +30,8 @@ struct omap3_isp_aewb_stats; /** * struct iq_params - Image quality tuning parameters * @window: Statistics computation window (fraction of the image size) + * @ae_delay: Number of frames to skip at stream start before enabling AE + * @ae_interval: Number of frames between AE algorithm runs * @mean_level: Target mean luminance level (fraction of the maximum) * @exposure: Initial exposure value (sensor-specific units) * @exposure_min: Minimum exposure value @@ -47,6 +49,9 @@ struct iq_params { float height; } window; + unsigned int ae_delay; + unsigned int ae_interval; + float mean_level; unsigned int exposure; @@ -327,6 +327,8 @@ static void usage(const char *argv0) printf("-s, --skip n Skip display of n frames out of n+1\n"); printf(" --aewb param=value Set AEWB algorithm parameter 'param' to 'value'\n"); printf("\nSupported AEWB parameters are:\n"); + printf("- ae-delay Number of frames to skip at stream start before enabling AE\n"); + printf("- ae-interval Number of frames between AE algorithm runs (>= 1)\n"); printf("- exposure-def Exposure time default value\n"); printf("- exposure-min Exposure time minimum value\n"); printf("- exposure-max Exposure time maximum value\n"); @@ -402,6 +402,8 @@ static void usage(const char *argv0) printf("-v, --view Enable viewfinder\n"); printf(" --aewb param=value Set AEWB algorithm parameter 'param' to 'value'\n"); printf("\nSupported AEWB parameters are:\n"); + printf("- ae-delay Number of frames to skip at stream start before enabling AE\n"); + printf("- ae-interval Number of frames between AE algorithm runs (>= 1)\n"); printf("- exposure-def Exposure time default value\n"); printf("- exposure-min Exposure time minimum value\n"); printf("- exposure-max Exposure time maximum value\n"); |