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androidmedia: Implement property probe for zoom and ev_compensation

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This commit is contained in:
Youness Alaoui 2012-11-02 18:00:55 -04:00 committed by Nicolas Dufresne
parent 1ef65636d1
commit 49a40edae9
1 changed files with 74 additions and 8 deletions
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82
sys/androidcamera/gstahcsrc.c
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@ -535,10 +535,17 @@ gst_ahc_src_probe_get_properties (GstPropertyProbe * probe)
GObjectClass *klass = G_OBJECT_GET_CLASS (probe);
GstAHCSrcClass *ahc_class = GST_AHC_SRC_CLASS (probe);
if (!ahc_class->probe_properties)
/* FIXME: g_object_class_find_property returns overriden property with
* param_id == 0, so we can't switch/case the prop_id and
* g_param_spec_get_redirect_target() returns NULL */
if (!ahc_class->probe_properties) {
ahc_class->probe_properties = g_list_append (NULL,
g_object_class_find_property (klass, "device"));
ahc_class->probe_properties = g_list_append (ahc_class->probe_properties,
g_object_class_find_property (klass, GST_PHOTOGRAPHY_PROP_EV_COMP));
ahc_class->probe_properties = g_list_append (ahc_class->probe_properties,
g_object_class_find_property (klass, GST_PHOTOGRAPHY_PROP_ZOOM));
}
return ahc_class->probe_properties;
}
@ -547,6 +554,7 @@ static GValueArray *
gst_ahc_src_probe_get_values (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
GstAHCSrc *self = GST_AHC_SRC (probe);
GValueArray *array = NULL;
switch (prop_id) {
@ -564,6 +572,66 @@ gst_ahc_src_probe_get_values (GstPropertyProbe * probe,
g_value_unset (&value);
}
break;
case PROP_EV_COMP:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
gint min, max;
gfloat step, ev;
min = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_max_exposure_compensation (params);
step = gst_ahc_parameters_get_exposure_compensation_step (params);
if (step != 0.0 && min != max) {
GValue value = { 0 };
gint i, total = 0;
total = (max - min) / step;
array = g_value_array_new (total);
g_value_init (&value, G_TYPE_FLOAT);
for (i = 0, ev = min; i < total && ev < max; i++, ev += step) {
g_value_set_float (&value, ev);
g_value_array_append (array, &value);
}
g_value_unset (&value);
}
gst_ahc_parameters_free (params);
}
}
break;
case PROP_ZOOM:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
GList *zoom_ratios = gst_ahc_parameters_get_zoom_ratios (params);
gint max_zoom = gst_ahc_parameters_get_max_zoom (params);
if (zoom_ratios && g_list_length (zoom_ratios) == (max_zoom + 1)) {
GValue value = { 0 };
GList *i;
array = g_value_array_new (max_zoom + 1);
g_value_init (&value, G_TYPE_FLOAT);
for (i = zoom_ratios; i; i = i->next) {
gint zoom_value = GPOINTER_TO_INT (i->data);
gfloat zoom = (gfloat) zoom_value / 100.0;
g_value_set_float (&value, zoom);
g_value_array_append (array, &value);
}
g_value_unset (&value);
}
gst_ahc_parameters_free (params);
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
break;
@ -596,9 +664,10 @@ gst_ahc_src_get_ev_compensation (GstPhotography * photo, gfloat * ev_comp)
ev = gst_ahc_parameters_get_exposure_compensation (params);
min = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_max_exposure_compensation (params);
step = gst_ahc_parameters_get_exposure_compensation_step (params);
if (step != 0.0 && min != max && ev >= min && ev <= max && step != 0.0) {
if (step != 0.0 && min != max && ev >= min && ev <= max) {
if (ev_comp)
*ev_comp = ev * step;
ret = TRUE;
@ -913,9 +982,7 @@ gst_ahc_src_set_ev_compensation (GstPhotography * photo, gfloat ev_comp)
min = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_min_exposure_compensation (params);
step = gst_ahc_parameters_get_exposure_compensation_step (params);
if (step != 0.0 && min != max && step != 0.0 &&
ev_comp >= min && ev_comp <= max) {
/* TODO: error or get closest ev? */
if (step != 0.0 && min != max && ev_comp >= min && ev_comp <= max) {
ev = ev_comp / step;
if ((ev * step) == ev_comp) {
gst_ahc_parameters_set_exposure_compensation (params, ev);
@ -1145,7 +1212,6 @@ gst_ahc_src_set_zoom (GstPhotography * photo, gfloat zoom)
gint zoom_value = GPOINTER_TO_INT (g_list_nth_data (zoom_ratios, i));
gfloat value = (gfloat) zoom_value / 100.0;
/* TODO: error or get closest zoom? */
if (value == zoom)
zoom_idx = i;
}