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rpicamsrc: Implement GstColorBalance interface

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Fixes https://github.com/thaytan/gst-rpicamsrc/issues/24
This commit is contained in:
Philippe Normand 2015-04-29 16:36:18 +02:00 committed by Tim-Philipp Müller
parent 4e827949ef
commit 48a735ff21
2 changed files with 128 additions and 2 deletions
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127
sys/rpicamsrc/gstrpicamsrc.c
View file

@ -183,11 +183,12 @@ static GstStaticPadTemplate video_src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_CAPS ( /*RAW_AND_JPEG_CAPS "; " */ H264_CAPS)
);
#define gst_rpi_cam_src_parent_class parent_class
G_DEFINE_TYPE (GstRpiCamSrc, gst_rpi_cam_src, GST_TYPE_PUSH_SRC);
static void gst_rpi_cam_src_finalize (GObject *object);
static void gst_rpi_cam_src_colorbalance_init (GstColorBalanceInterface *
iface);
static void gst_rpi_cam_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rpi_cam_src_get_property (GObject * object, guint prop_id,
@ -205,6 +206,12 @@ static gboolean gst_rpi_cam_src_event (GstBaseSrc * src, GstEvent * event);
static gboolean gst_rpi_cam_src_send_event (GstElement * element,
GstEvent * event);
#define gst_rpi_cam_src_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstRpiCamSrc, gst_rpi_cam_src,
GST_TYPE_PUSH_SRC,
G_IMPLEMENT_INTERFACE (GST_TYPE_COLOR_BALANCE,
gst_rpi_cam_src_colorbalance_init));
#define C_ENUM(v) ((gint) v)
GType
@ -434,6 +441,8 @@ gst_rpi_cam_src_class_init (GstRpiCamSrcClass * klass)
static void
gst_rpi_cam_src_init (GstRpiCamSrc * src)
{
GstColorBalanceChannel *channel;
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (src), TRUE);
raspicapture_default_config (&src->capture_config);
@ -445,17 +454,131 @@ gst_rpi_cam_src_init (GstRpiCamSrc * src)
/* Don't let basesrc set timestamps, we'll do it using
* buffer PTS and system times */
gst_base_src_set_do_timestamp (GST_BASE_SRC (src), FALSE);
/* Generate the channels list */
channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
channel->label = g_strdup ("CONTRAST");
channel->min_value = -100;
channel->max_value = 100;
src->channels = g_list_append (src->channels, channel);
channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
channel->label = g_strdup ("BRIGHTNESS");
channel->min_value = 0;
channel->max_value = 100;
src->channels = g_list_append (src->channels, channel);
channel = g_object_new (GST_TYPE_COLOR_BALANCE_CHANNEL, NULL);
channel->label = g_strdup ("SATURATION");
channel->min_value = -100;
channel->max_value = 100;
src->channels = g_list_append (src->channels, channel);
}
static void
gst_rpi_cam_src_finalize (GObject *object)
{
GstRpiCamSrc *src = GST_RPICAMSRC (object);
GList *channels = NULL;
g_mutex_clear (&src->config_lock);
channels = src->channels;
while (channels) {
GstColorBalanceChannel *channel = channels->data;
g_object_unref (channel);
channels->data = NULL;
channels = g_list_next (channels);
}
if (src->channels)
g_list_free (src->channels);
G_OBJECT_CLASS (gst_rpi_cam_src_parent_class)->finalize (object);
}
static const GList *
gst_rpi_cam_src_colorbalance_list_channels (GstColorBalance * balance)
{
GstRpiCamSrc *src = GST_RPICAMSRC (balance);
g_return_val_if_fail (src != NULL, NULL);
g_return_val_if_fail (GST_IS_RPICAMSRC (src), NULL);
return src->channels;
}
static void
gst_rpi_cam_src_colorbalance_set_value (GstColorBalance * balance,
GstColorBalanceChannel * channel, gint value)
{
GstRpiCamSrc *src = GST_RPICAMSRC (balance);
gboolean changed = FALSE;
g_return_if_fail (src != NULL);
g_return_if_fail (GST_IS_RPICAMSRC (src));
g_return_if_fail (channel->label != NULL);
GST_OBJECT_LOCK (src);
if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
changed = value != src->capture_config.camera_parameters.saturation;
src->capture_config.camera_parameters.saturation = value;
} else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
changed = value != src->capture_config.camera_parameters.brightness;
src->capture_config.camera_parameters.brightness = value;
} else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
changed = value != src->capture_config.camera_parameters.contrast;
src->capture_config.camera_parameters.contrast = value;
}
if (changed)
src->capture_config.change_flags |= PROP_CHANGE_COLOURBALANCE;
GST_OBJECT_UNLOCK (src);
if (changed) {
gst_color_balance_value_changed (balance, channel,
gst_color_balance_get_value (balance, channel));
}
}
static gint
gst_rpi_cam_src_colorbalance_get_value (GstColorBalance * balance,
GstColorBalanceChannel * channel)
{
GstRpiCamSrc *src = GST_RPICAMSRC (balance);
gint value = 0;
g_return_val_if_fail (src != NULL, 0);
g_return_val_if_fail (GST_IS_RPICAMSRC (src), 0);
g_return_val_if_fail (channel->label != NULL, 0);
if (!g_ascii_strcasecmp (channel->label, "SATURATION")) {
value = src->capture_config.camera_parameters.saturation;
} else if (!g_ascii_strcasecmp (channel->label, "BRIGHTNESS")) {
value = src->capture_config.camera_parameters.brightness;
} else if (!g_ascii_strcasecmp (channel->label, "CONTRAST")) {
value = src->capture_config.camera_parameters.contrast;
}
return value;
}
static GstColorBalanceType
gst_rpi_cam_src_colorbalance_get_balance_type (GstColorBalance * balance)
{
return GST_COLOR_BALANCE_HARDWARE;
}
static void
gst_rpi_cam_src_colorbalance_init (GstColorBalanceInterface * iface)
{
iface->list_channels = gst_rpi_cam_src_colorbalance_list_channels;
iface->set_value = gst_rpi_cam_src_colorbalance_set_value;
iface->get_value = gst_rpi_cam_src_colorbalance_get_value;
iface->get_balance_type = gst_rpi_cam_src_colorbalance_get_balance_type;
}
static void
gst_rpi_cam_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)

3
sys/rpicamsrc/gstrpicamsrc.h
View file

@ -74,6 +74,9 @@ struct _GstRpiCamSrc
gboolean started;
GMutex config_lock;
/* channels for interface */
GList *channels;
};
struct _GstRpiCamSrcClass