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logoinsert: Add data property

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This commit is contained in:
David Schleef 2010-11-15 11:37:12 -08:00
parent 4b18a73332
commit 7405d643dd
1 changed files with 59 additions and 22 deletions
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81
ext/cog/gstlogoinsert.c
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@ -49,7 +49,8 @@ struct _GstLogoinsert
{
GstBaseTransform base_transform;
gchar *location;
char *location;
GstBuffer *buffer;
GstVideoFormat format;
int width;
@ -73,6 +74,7 @@ enum
{
ARG_0,
ARG_LOCATION,
ARG_DATA
};
GType gst_logoinsert_get_type (void);
@ -86,8 +88,9 @@ static void gst_logoinsert_set_property (GObject * object, guint prop_id,
static void gst_logoinsert_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_logoinsert_set_location (GstLogoinsert * li,
const gchar * location);
static void
gst_logoinsert_set_location (GstLogoinsert * li, const char *location);
static void gst_logoinsert_set_data (GstLogoinsert * li, GstBuffer * buffer);
static gboolean gst_logoinsert_set_caps (GstBaseTransform * base_transform,
GstCaps * incaps, GstCaps * outcaps);
@ -170,6 +173,10 @@ gst_logoinsert_class_init (gpointer g_class, gpointer class_data)
g_param_spec_string ("location", "location",
"location of PNG file to overlay", "",
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_DATA,
gst_param_spec_mini_object ("data", "data",
"Buffer containing PNG file to overlay", GST_TYPE_BUFFER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
base_transform_class->set_caps = gst_logoinsert_set_caps;
base_transform_class->transform_ip = gst_logoinsert_transform_ip;
@ -196,6 +203,10 @@ gst_logoinsert_set_property (GObject * object, guint prop_id,
case ARG_LOCATION:
gst_logoinsert_set_location (src, g_value_get_string (value));
break;
case ARG_DATA:
gst_logoinsert_set_data (src,
(GstBuffer *) gst_value_get_mini_object (value));
break;
default:
break;
}
@ -214,6 +225,9 @@ gst_logoinsert_get_property (GObject * object, guint prop_id, GValue * value,
case ARG_LOCATION:
g_value_set_string (value, src->location);
break;
case ARG_DATA:
gst_value_set_mini_object (value, (GstMiniObject *) src->buffer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -298,37 +312,60 @@ gst_logoinsert_transform_ip (GstBaseTransform * base_transform, GstBuffer * buf)
return GST_FLOW_OK;
}
static void
gst_logoinsert_set_location (GstLogoinsert * li, const gchar * location)
static GstBuffer *
get_buffer_from_file (const char *filename)
{
gboolean ret;
GError *error = NULL;
GstBuffer *buffer;
gsize size;
gchar *data;
ret = g_file_get_contents (filename, &data, &size, NULL);
if (!ret)
return NULL;
buffer = gst_buffer_new ();
GST_BUFFER_DATA (buffer) = (guchar *) data;
GST_BUFFER_MALLOCDATA (buffer) = (guchar *) data;
GST_BUFFER_SIZE (buffer) = size;
return buffer;
}
static void
gst_logoinsert_set_location (GstLogoinsert * li, const char *location)
{
g_free (li->location);
g_free (li->data);
li->location = g_strdup (location);
gst_logoinsert_set_data (li, get_buffer_from_file (li->location));
}
static void
gst_logoinsert_set_data (GstLogoinsert * li, GstBuffer * buffer)
{
if (li->buffer)
gst_buffer_unref (li->buffer);
/* steals the reference */
li->buffer = buffer;
if (li->overlay_frame) {
cog_frame_unref (li->overlay_frame);
li->overlay_frame = NULL;
}
li->location = g_strdup (location);
ret = g_file_get_contents (li->location, &li->data, &li->size, &error);
if (!ret) {
li->data = NULL;
li->size = 0;
return;
}
li->argb_frame = cog_frame_new_from_png (li->data, li->size);
if (li->alpha_frame) {
cog_frame_unref (li->alpha_frame);
li->alpha_frame = NULL;
}
if (li->overlay_frame) {
cog_frame_unref (li->overlay_frame);
li->overlay_frame = NULL;
if (li->argb_frame) {
cog_frame_unref (li->argb_frame);
li->argb_frame = NULL;
}
if (li->buffer) {
li->argb_frame = cog_frame_new_from_png (GST_BUFFER_DATA (li->buffer),
GST_BUFFER_SIZE (li->buffer));
}
}