diff options
| -rw-r--r-- | ext/closedcaption/gstline21dec.c | 73 | ||||
| -rw-r--r-- | ext/closedcaption/gstline21dec.h | 2 |
2 files changed, 75 insertions, 0 deletions
diff --git a/ext/closedcaption/gstline21dec.c b/ext/closedcaption/gstline21dec.c index 631be73d8..88a06ed27 100644 --- a/ext/closedcaption/gstline21dec.c +++ b/ext/closedcaption/gstline21dec.c @@ -37,6 +37,14 @@ GST_DEBUG_CATEGORY_STATIC (gst_line_21_decoder_debug); #define GST_CAT_DEFAULT gst_line_21_decoder_debug +enum +{ + PROP_0, + PROP_NTSC_ONLY, +}; + +#define DEFAULT_NTSC_ONLY FALSE + #define CAPS "video/x-raw, format={ I420, YUY2, YVYU, UYVY, VYUY, v210 }, interlace-mode=interleaved" static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", @@ -65,6 +73,38 @@ static GstFlowReturn gst_line_21_decoder_prepare_output_buffer (GstBaseTransform * trans, GstBuffer * in, GstBuffer ** out); static void +gst_line_21_decoder_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstLine21Decoder *enc = GST_LINE21DECODER (object); + + switch (prop_id) { + case PROP_NTSC_ONLY: + enc->ntsc_only = g_value_get_boolean (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_line_21_decoder_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstLine21Decoder *enc = GST_LINE21DECODER (object); + + switch (prop_id) { + case PROP_NTSC_ONLY: + g_value_set_boolean (value, enc->ntsc_only); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void gst_line_21_decoder_class_init (GstLine21DecoderClass * klass) { GObjectClass *gobject_class; @@ -78,6 +118,24 @@ gst_line_21_decoder_class_init (GstLine21DecoderClass * klass) filter_class = (GstVideoFilterClass *) klass; gobject_class->finalize = gst_line_21_decoder_finalize; + gobject_class->set_property = gst_line_21_decoder_set_property; + gobject_class->get_property = gst_line_21_decoder_get_property; + + /** + * line21decoder:ntsc-only + * + * Whether line 21 decoding should only be attempted when the + * input resolution matches NTSC (720 x 525) or NTSC usable + * lines (720 x 486) + * + * Since: 1.20 + */ + g_object_class_install_property (G_OBJECT_CLASS (klass), + PROP_NTSC_ONLY, g_param_spec_boolean ("ntsc-only", + "NTSC only", + "Whether line 21 decoding should only be attempted when the " + "input resolution matches NTSC", DEFAULT_NTSC_ONLY, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_set_static_metadata (gstelement_class, "Line 21 CC Decoder", @@ -105,8 +163,10 @@ gst_line_21_decoder_init (GstLine21Decoder * filter) { GstLine21Decoder *self = (GstLine21Decoder *) filter; + self->info = NULL; self->line21_offset = -1; self->max_line_probes = 40; + self->ntsc_only = DEFAULT_NTSC_ONLY; } static vbi_pixfmt @@ -173,6 +233,15 @@ gst_line_21_decoder_set_info (GstVideoFilter * filter, return TRUE; } + if (self->ntsc_only && + GST_VIDEO_INFO_HEIGHT (in_info) != 525 && + GST_VIDEO_INFO_HEIGHT (in_info) != 486) { + GST_DEBUG_OBJECT (filter, + "NTSC-only, only 525 or 486 pixel high formats are supported"); + self->compatible_format = FALSE; + return TRUE; + } + if (fmt == 0) { if (GST_VIDEO_INFO_FORMAT (in_info) == GST_VIDEO_FORMAT_v210) { GST_DEBUG_OBJECT (filter, @@ -428,6 +497,10 @@ gst_line_21_decoder_stop (GstBaseTransform * btrans) GstLine21Decoder *self = (GstLine21Decoder *) btrans; vbi_raw_decoder_destroy (&self->zvbi_decoder); + if (self->info) { + gst_video_info_free (self->info); + self->info = NULL; + } return TRUE; } diff --git a/ext/closedcaption/gstline21dec.h b/ext/closedcaption/gstline21dec.h index e576f25fe..c0134b304 100644 --- a/ext/closedcaption/gstline21dec.h +++ b/ext/closedcaption/gstline21dec.h @@ -60,6 +60,8 @@ struct _GstLine21Decoder guint8 *converted_lines; GstVideoInfo *info; + + gboolean ntsc_only; }; struct _GstLine21DecoderClass |