mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-02 12:45:51 +00:00
port teletextdec to 1.0
https://bugzilla.gnome.org/show_bug.cgi?id=733819
This commit is contained in:
Daniel Kamil Kozar
Edward Hervey
parent
fe116092cd
commit
717f9a287d
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@ -427,7 +427,7 @@ GST_PLUGINS_NONPORTED=" cdxaparse \
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gsettings \
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musepack nas sdl timidity \
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acm wininet \
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xvid lv2 teletextdec sndio libvisual"
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xvid lv2 sndio libvisual"
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AC_SUBST(GST_PLUGINS_NONPORTED)
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dnl these are all the gst plug-ins, compilable without additional libs
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@ -1,6 +1,6 @@
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plugin_LTLIBRARIES = libgstteletextdec.la
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libgstteletextdec_la_SOURCES = gstteletextdec.c teletext.c
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libgstteletextdec_la_SOURCES = gstteletextdec.c
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libgstteletextdec_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS) $(TELETEXTDEC_CFLAGS)
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libgstteletextdec_la_LIBADD = $(GST_PLUGINS_BASE_CFLAGS) $(GST_BASE_LIBS) $(TELETEXTDEC_LIBS)
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@ -22,12 +22,13 @@
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/**
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* SECTION:element-teletextdec
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*
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* Decode PES stream containing teletext information to RGBA stream
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* Decode a stream of raw VBI packets containing teletext information to a RGBA
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* stream.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v -m filesrc location=recording.mpeg ! mpegtsdemux ! private/teletext ! teletextdec ! videoconvert ! ximagesink
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* gst-launch -v -m filesrc location=recording.mpeg ! tsdemux ! teletextdec ! videoconvert ! ximagesink
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* ]|
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* </refsect2>
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*/
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@ -39,12 +40,15 @@
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <string.h>
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#include <stdlib.h>
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#include "gstteletextdec.h"
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GST_DEBUG_CATEGORY_STATIC (gst_teletextdec_debug);
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#define GST_CAT_DEFAULT gst_teletextdec_debug
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#define parent_class gst_teletextdec_parent_class
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#define SUBTITLES_PAGE 888
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#define MAX_SLICES 32
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#define DEFAULT_FONT_DESCRIPTION "verdana 12"
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@ -120,26 +124,25 @@ static const gchar *default_color_map[40] = {
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"#FF00FF", "#00FFFF", "#EEEEEE"
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};
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/* in RGBA mode, one character occupies 12 x 10 pixels. */
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#define COLUMNS_TO_WIDTH(cols) ((cols) * 12)
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#define ROWS_TO_HEIGHT(rows) ((rows) * 10)
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS
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("video/mpeg,mpegversion=2,systemstream=TRUE ; private/teletext")
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GST_STATIC_CAPS ("application/x-teletext;")
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);
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS
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(GST_VIDEO_CAPS_RGBA "; text/plain ; text/html ; text/x-pango-markup")
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(GST_VIDEO_CAPS_MAKE ("RGBA") ";"
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"text/x-raw, format={utf-8,pango-markup} ;")
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);
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/* debug category for filtering log messages */
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_teletextdec_debug, "teletext", 0, "Teletext decoder");
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GST_BOILERPLATE_FULL (GstTeletextDec, gst_teletextdec, GstElement,
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GST_TYPE_ELEMENT, DEBUG_INIT);
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G_DEFINE_TYPE (GstTeletextDec, gst_teletextdec, GST_TYPE_ELEMENT);
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static void gst_teletextdec_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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@ -147,61 +150,35 @@ static void gst_teletextdec_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_teletextdec_finalize (GObject * object);
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static GstStateChangeReturn gst_teletextdec_change_state (GstElement * element,
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GstStateChange transition);
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static GstStateChangeReturn gst_teletextdec_change_state (GstElement *
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element, GstStateChange transition);
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static GstFlowReturn gst_teletextdec_chain (GstPad * pad, GstBuffer * buf);
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static gboolean gst_teletextdec_sink_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_teletextdec_sink_event (GstPad * pad, GstEvent * event);
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static GstPadLinkReturn gst_teletextdec_src_set_caps (GstPad * pad,
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GstCaps * caps);
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static GstFlowReturn gst_teletextdec_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static gboolean gst_teletextdec_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_teletextdec_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static vbi_bool gst_teletextdec_convert (vbi_dvb_demux * dx, gpointer user_data,
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const vbi_sliced * sliced, guint n_lines, gint64 pts);
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static void gst_teletextdec_event_handler (vbi_event * ev, void *user_data);
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static GstFlowReturn gst_teletextdec_push_page (GstTeletextDec * teletext);
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static GstFlowReturn gst_teletextdec_export_text_page (GstTeletextDec *
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teletext, vbi_page * page, GstBuffer ** buf);
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static GstFlowReturn gst_teletextdec_export_html_page (GstTeletextDec *
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teletext, vbi_page * page, GstBuffer ** buf);
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static GstFlowReturn gst_teletextdec_export_rgba_page (GstTeletextDec *
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teletext, vbi_page * page, GstBuffer ** buf);
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static GstFlowReturn gst_teletextdec_export_pango_page (GstTeletextDec *
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teletext, vbi_page * page, GstBuffer ** buf);
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static gboolean gst_teletextdec_push_preroll_buffer (GstTeletextDec * teletext);
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static void gst_teletextdec_process_telx_buffer (GstTeletextDec * teletext,
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GstBuffer * buf);
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static void gst_teletextdec_process_pes_buffer (GstTeletextDec * teletext,
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GstBuffer * buf);
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static gboolean gst_teletextdec_extract_data_units (GstTeletextDec * teletext,
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GstTeletextFrame * f, guint8 * packet, guint * offset, gint size);
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static gboolean gst_teletextdec_extract_data_units (GstTeletextDec *
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teletext, GstTeletextFrame * f, const guint8 * packet, guint * offset,
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gsize size);
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static void gst_teletextdec_zvbi_init (GstTeletextDec * teletext);
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static void gst_teletextdec_zvbi_clear (GstTeletextDec * teletext);
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/* GObject vmethod implementations */
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static void
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gst_teletextdec_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_set_static_metadata (element_class,
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"Teletext decoder",
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"Decoder",
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"Decode PES or raw VBI stream containing teletext information to RGBA, HTML and text",
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"Sebastian Pölsterl <sebp@k-d-w.org>, "
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"Andoni Morales Alastruey <ylatuya@gmail.com>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_template));
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}
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/* initialize the gstteletext's class */
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static void
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gst_teletextdec_class_init (GstTeletextDecClass * klass)
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@ -245,18 +222,28 @@ gst_teletextdec_class_init (GstTeletextDecClass * klass)
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"Font description used for the pango output.",
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DEFAULT_FONT_DESCRIPTION,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (gstelement_class,
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"Teletext decoder",
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"Decoder",
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"Decode a raw VBI stream containing teletext information to RGBA and text",
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"Sebastian Pölsterl <sebp@k-d-w.org>, "
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"Andoni Morales Alastruey <ylatuya@gmail.com>");
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_template));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sink_template));
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}
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/* initialize the new element
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* initialize instance structure
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*/
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static void
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gst_teletextdec_init (GstTeletextDec * teletext, GstTeletextDecClass * klass)
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gst_teletextdec_init (GstTeletextDec * teletext)
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{
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/* Create sink pad */
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teletext->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
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gst_pad_set_setcaps_function (teletext->sinkpad,
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GST_DEBUG_FUNCPTR (gst_teletextdec_sink_setcaps));
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gst_pad_set_chain_function (teletext->sinkpad,
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GST_DEBUG_FUNCPTR (gst_teletextdec_chain));
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gst_pad_set_event_function (teletext->sinkpad,
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@ -265,11 +252,11 @@ gst_teletextdec_init (GstTeletextDec * teletext, GstTeletextDecClass * klass)
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/* Create src pad */
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teletext->srcpad = gst_pad_new_from_static_template (&src_template, "src");
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gst_pad_set_setcaps_function (teletext->srcpad,
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GST_DEBUG_FUNCPTR (gst_teletextdec_src_set_caps));
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gst_pad_set_event_function (teletext->srcpad,
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GST_DEBUG_FUNCPTR (gst_teletextdec_src_event));
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gst_element_add_pad (GST_ELEMENT (teletext), teletext->srcpad);
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teletext->demux = NULL;
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teletext->segment = NULL;
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teletext->decoder = NULL;
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teletext->pageno = 0x100;
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teletext->subno = -1;
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@ -284,7 +271,7 @@ gst_teletextdec_init (GstTeletextDec * teletext, GstTeletextDecClass * klass)
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teletext->rate_denominator = 1;
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teletext->queue = NULL;
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teletext->queue_lock = g_mutex_new ();
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g_mutex_init (&teletext->queue_lock);
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teletext->frame = g_new0 (GstTeletextFrame, 1);
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teletext->frame->sliced_begin = g_new (vbi_sliced, MAX_SLICES);
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@ -293,7 +280,8 @@ gst_teletextdec_init (GstTeletextDec * teletext, GstTeletextDecClass * klass)
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teletext->last_ts = 0;
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teletext->process_buf_func = NULL;
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teletext->export_func = NULL;
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teletext->buf_pool = NULL;
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}
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static void
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@ -301,7 +289,7 @@ gst_teletextdec_finalize (GObject * object)
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{
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GstTeletextDec *teletext = GST_TELETEXTDEC (object);
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g_mutex_free (teletext->queue_lock);
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g_mutex_clear (&teletext->queue_lock);
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g_free (teletext->frame);
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@ -321,9 +309,9 @@ gst_teletextdec_zvbi_init (GstTeletextDec * teletext)
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VBI_EVENT_TTX_PAGE | VBI_EVENT_CAPTION,
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gst_teletextdec_event_handler, teletext);
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g_mutex_lock (teletext->queue_lock);
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g_mutex_lock (&teletext->queue_lock);
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teletext->queue = g_queue_new ();
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g_mutex_unlock (teletext->queue_lock);
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g_mutex_unlock (&teletext->queue_lock);
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}
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static void
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@ -333,10 +321,6 @@ gst_teletextdec_zvbi_clear (GstTeletextDec * teletext)
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GST_LOG_OBJECT (teletext, "Clearing structures");
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if (teletext->demux != NULL) {
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vbi_dvb_demux_delete (teletext->demux);
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teletext->demux = NULL;
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}
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if (teletext->decoder != NULL) {
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vbi_decoder_delete (teletext->decoder);
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teletext->decoder = NULL;
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@ -346,12 +330,12 @@ gst_teletextdec_zvbi_clear (GstTeletextDec * teletext)
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teletext->frame = NULL;
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}
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g_mutex_lock (teletext->queue_lock);
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g_mutex_lock (&teletext->queue_lock);
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if (teletext->queue != NULL) {
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g_queue_free (teletext->queue);
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teletext->queue = NULL;
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}
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g_mutex_unlock (teletext->queue_lock);
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g_mutex_unlock (&teletext->queue_lock);
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teletext->in_timestamp = GST_CLOCK_TIME_NONE;
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teletext->in_duration = GST_CLOCK_TIME_NONE;
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@ -417,21 +401,31 @@ gst_teletextdec_get_property (GObject * object, guint prop_id,
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}
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static gboolean
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gst_teletextdec_sink_event (GstPad * pad, GstEvent * event)
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gst_teletextdec_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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gboolean ret;
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GstTeletextDec *teletext = GST_TELETEXTDEC (gst_pad_get_parent (pad));
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GstTeletextDec *teletext = GST_TELETEXTDEC (parent);
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GST_DEBUG_OBJECT (teletext, "got event %s",
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gst_event_type_get_name (GST_EVENT_TYPE (event)));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NEWSEGMENT:
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case GST_EVENT_SEGMENT:
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/* maybe save and/or update the current segment (e.g. for output
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* clipping) or convert the event into one in a different format
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* (e.g. BYTES to TIME) or drop it and set a flag to send a newsegment
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* event in a different format later */
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ret = gst_pad_push_event (teletext->srcpad, event);
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if (NULL == teletext->export_func) {
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/* save the segment event and send it after sending caps. replace the
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* old event if present. */
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if (teletext->segment) {
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gst_event_unref (teletext->segment);
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}
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teletext->segment = event;
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ret = TRUE;
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} else {
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ret = gst_pad_push_event (teletext->srcpad, event);
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}
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break;
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case GST_EVENT_EOS:
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/* end-of-stream, we should close down all stream leftovers here */
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@ -444,12 +438,31 @@ gst_teletextdec_sink_event (GstPad * pad, GstEvent * event)
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ret = gst_pad_push_event (teletext->srcpad, event);
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break;
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default:
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ret = gst_pad_event_default (pad, event);
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ret = gst_pad_event_default (pad, parent, event);
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break;
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}
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gst_object_unref (teletext);
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return ret;
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}
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static gboolean
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gst_teletextdec_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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gboolean ret;
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GstTeletextDec *teletext = GST_TELETEXTDEC (parent);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_RECONFIGURE:
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/* setting export_func to NULL will cause the element to renegotiate caps
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* before pushing a buffer. */
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teletext->export_func = NULL;
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ret = TRUE;
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break;
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default:
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ret = gst_pad_event_default (pad, parent, event);
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break;
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}
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return ret;
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}
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@ -484,106 +497,6 @@ gst_teletextdec_change_state (GstElement * element, GstStateChange transition)
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return ret;
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}
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static gboolean
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gst_teletextdec_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstTeletextDec *teletext = GST_TELETEXTDEC (gst_pad_get_parent (pad));
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GstStructure *structure = gst_caps_get_structure (caps, 0);
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const gchar *mimetype = gst_structure_get_name (structure);
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GST_DEBUG_OBJECT (teletext, "%s:%s, caps=%" GST_PTR_FORMAT,
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GST_DEBUG_PAD_NAME (pad), caps);
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if (g_strcmp0 (mimetype, "private/teletext") == 0) {
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teletext->process_buf_func = gst_teletextdec_process_telx_buffer;
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goto accept_caps;
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} else if (g_strcmp0 (mimetype, "video/mpeg") == 0) {
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gint version;
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gboolean is_systemstream;
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if (!gst_structure_get_int (structure, "mpegversion", &version) ||
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!gst_structure_get_boolean (structure, "systemstream",
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&is_systemstream))
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goto refuse_caps;
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if (version != 2 || !is_systemstream)
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goto refuse_caps;
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teletext->process_buf_func = gst_teletextdec_process_pes_buffer;
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teletext->demux = vbi_dvb_pes_demux_new (gst_teletextdec_convert, teletext);
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goto accept_caps;
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} else
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goto refuse_caps;
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accept_caps:
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{
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gst_object_unref (teletext);
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return gst_teletextdec_push_preroll_buffer (teletext);
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}
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refuse_caps:
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{
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GST_ERROR_OBJECT (teletext,
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"pad %s refused renegotiation to %" GST_PTR_FORMAT,
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GST_PAD_NAME (pad), caps);
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gst_object_unref (teletext);
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return FALSE;
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}
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}
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static gboolean
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gst_teletextdec_src_set_caps (GstPad * pad, GstCaps * caps)
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{
|
||||
GstTeletextDec *teletext;
|
||||
GstStructure *structure = NULL;
|
||||
const gchar *mimetype;
|
||||
GstPad *peer;
|
||||
|
||||
teletext = GST_TELETEXTDEC (gst_pad_get_parent (pad));
|
||||
GST_DEBUG_OBJECT (teletext, "Linking teletext source pad");
|
||||
|
||||
if (gst_caps_is_empty (caps)) {
|
||||
GST_ERROR_OBJECT (teletext,
|
||||
"pad %s refused renegotiation to %" GST_PTR_FORMAT,
|
||||
GST_PAD_NAME (pad), caps);
|
||||
goto refuse_caps;
|
||||
}
|
||||
|
||||
peer = gst_pad_get_peer (pad);
|
||||
if (peer) {
|
||||
gst_pad_set_caps (peer, caps);
|
||||
gst_object_unref (peer);
|
||||
}
|
||||
|
||||
structure = gst_caps_get_structure (caps, 0);
|
||||
mimetype = gst_structure_get_name (structure);
|
||||
|
||||
if (g_strcmp0 (mimetype, "video/x-raw-rgb") == 0) {
|
||||
teletext->output_format = GST_TELETEXTDEC_OUTPUT_FORMAT_RGBA;
|
||||
GST_DEBUG_OBJECT (teletext, "Selected RGBA output format");
|
||||
} else if (g_strcmp0 (mimetype, "text/html") == 0) {
|
||||
teletext->output_format = GST_TELETEXTDEC_OUTPUT_FORMAT_HTML;
|
||||
GST_DEBUG_OBJECT (teletext, "Selected HTML output format");
|
||||
} else if (g_strcmp0 (mimetype, "text/plain") == 0) {
|
||||
teletext->output_format = GST_TELETEXTDEC_OUTPUT_FORMAT_TEXT;
|
||||
GST_DEBUG_OBJECT (teletext, "Selected text output format");
|
||||
} else if (g_strcmp0 (mimetype, "text/x-pango-markup") == 0) {
|
||||
teletext->output_format = GST_TELETEXTDEC_OUTPUT_FORMAT_PANGO;
|
||||
GST_DEBUG_OBJECT (teletext, "Selected pango markup output format");
|
||||
} else
|
||||
goto refuse_caps;
|
||||
|
||||
gst_object_unref (teletext);
|
||||
return TRUE;
|
||||
|
||||
|
||||
refuse_caps:
|
||||
{
|
||||
gst_object_unref (teletext);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_teletextdec_reset_frame (GstTeletextDec * teletext)
|
||||
{
|
||||
|
|
@ -594,21 +507,13 @@ gst_teletextdec_reset_frame (GstTeletextDec * teletext)
|
|||
teletext->frame->last_frame_line = 0;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_teletextdec_process_pes_buffer (GstTeletextDec * teletext, GstBuffer * buf)
|
||||
{
|
||||
vbi_dvb_demux_feed (teletext->demux, GST_BUFFER_DATA (buf),
|
||||
GST_BUFFER_SIZE (buf));
|
||||
return;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_teletextdec_process_telx_buffer (GstTeletextDec * teletext, GstBuffer * buf)
|
||||
{
|
||||
guint8 *data = GST_BUFFER_DATA (buf);
|
||||
const gint size = GST_BUFFER_SIZE (buf);
|
||||
GstMapInfo buf_map;
|
||||
guint offset = 0;
|
||||
gint res;
|
||||
gst_buffer_map (buf, &buf_map, GST_MAP_READ);
|
||||
|
||||
teletext->in_timestamp = GST_BUFFER_TIMESTAMP (buf);
|
||||
teletext->in_duration = GST_BUFFER_DURATION (buf);
|
||||
|
|
@ -617,10 +522,10 @@ gst_teletextdec_process_telx_buffer (GstTeletextDec * teletext, GstBuffer * buf)
|
|||
gst_teletextdec_reset_frame (teletext);
|
||||
}
|
||||
|
||||
while (offset < size) {
|
||||
while (offset < buf_map.size) {
|
||||
res =
|
||||
gst_teletextdec_extract_data_units (teletext, teletext->frame, data,
|
||||
&offset, size);
|
||||
gst_teletextdec_extract_data_units (teletext, teletext->frame,
|
||||
buf_map.data, &offset, buf_map.size);
|
||||
|
||||
if (res == VBI_NEW_FRAME) {
|
||||
/* We have a new frame, it's time to feed the decoder */
|
||||
|
|
@ -646,32 +551,14 @@ gst_teletextdec_process_telx_buffer (GstTeletextDec * teletext, GstBuffer * buf)
|
|||
gst_teletextdec_reset_frame (teletext);
|
||||
} else if (res == VBI_ERROR) {
|
||||
gst_teletextdec_reset_frame (teletext);
|
||||
return;
|
||||
goto beach;
|
||||
}
|
||||
}
|
||||
beach:
|
||||
gst_buffer_unmap (buf, &buf_map);
|
||||
return;
|
||||
}
|
||||
|
||||
static vbi_bool
|
||||
gst_teletextdec_convert (vbi_dvb_demux * dx,
|
||||
gpointer user_data, const vbi_sliced * sliced, guint n_lines, gint64 pts)
|
||||
{
|
||||
gdouble sample_time;
|
||||
vbi_sliced *s;
|
||||
|
||||
GstTeletextDec *teletext = GST_TELETEXTDEC (user_data);
|
||||
|
||||
GST_DEBUG_OBJECT (teletext, "Converting %u lines to decode", n_lines);
|
||||
|
||||
sample_time = pts * (1 / 90000.0);
|
||||
|
||||
s = g_memdup (sliced, n_lines * sizeof (vbi_sliced));
|
||||
vbi_decode (teletext->decoder, s, n_lines, sample_time);
|
||||
g_free (s);
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_teletextdec_event_handler (vbi_event * ev, void *user_data)
|
||||
{
|
||||
|
|
@ -697,9 +584,9 @@ gst_teletextdec_event_handler (vbi_event * ev, void *user_data)
|
|||
pi->pgno = pgno;
|
||||
pi->subno = subno;
|
||||
|
||||
g_mutex_lock (teletext->queue_lock);
|
||||
g_mutex_lock (&teletext->queue_lock);
|
||||
g_queue_push_tail (teletext->queue, pi);
|
||||
g_mutex_unlock (teletext->queue_lock);
|
||||
g_mutex_unlock (&teletext->queue_lock);
|
||||
break;
|
||||
case VBI_EVENT_CAPTION:
|
||||
/* TODO: Handle subtitles in caption teletext pages */
|
||||
|
|
@ -711,29 +598,148 @@ gst_teletextdec_event_handler (vbi_event * ev, void *user_data)
|
|||
return;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_teletextdec_try_get_buffer_pool (GstTeletextDec * teletext, GstCaps * caps,
|
||||
gssize size)
|
||||
{
|
||||
guint pool_bufsize, min_bufs, max_bufs;
|
||||
GstStructure *poolcfg;
|
||||
GstBufferPool *new_pool;
|
||||
GstQuery *alloc = gst_query_new_allocation (caps, TRUE);
|
||||
|
||||
if (teletext->buf_pool) {
|
||||
/* this function is called only on a caps/size change, so it's practically
|
||||
* impossible that we'll be able to reuse the old pool. */
|
||||
gst_buffer_pool_set_active (teletext->buf_pool, FALSE);
|
||||
gst_object_unref (teletext->buf_pool);
|
||||
}
|
||||
|
||||
if (!gst_pad_peer_query (teletext->srcpad, alloc)) {
|
||||
GST_DEBUG_OBJECT (teletext, "Failed to query peer pad for allocation "
|
||||
"parameters");
|
||||
teletext->buf_pool = NULL;
|
||||
goto beach;
|
||||
}
|
||||
|
||||
if (gst_query_get_n_allocation_pools (alloc) > 0) {
|
||||
gst_query_parse_nth_allocation_pool (alloc, 0, &new_pool, &pool_bufsize,
|
||||
&min_bufs, &max_bufs);
|
||||
} else {
|
||||
new_pool = gst_buffer_pool_new ();
|
||||
max_bufs = 0;
|
||||
min_bufs = 1;
|
||||
}
|
||||
|
||||
poolcfg = gst_buffer_pool_get_config (new_pool);
|
||||
gst_buffer_pool_config_set_params (poolcfg, gst_caps_copy (caps), size,
|
||||
min_bufs, max_bufs);
|
||||
if (!gst_buffer_pool_set_config (new_pool, poolcfg)) {
|
||||
GST_DEBUG_OBJECT (teletext, "Failed to configure the buffer pool");
|
||||
gst_object_unref (new_pool);
|
||||
teletext->buf_pool = NULL;
|
||||
goto beach;
|
||||
}
|
||||
if (!gst_buffer_pool_set_active (new_pool, TRUE)) {
|
||||
GST_DEBUG_OBJECT (teletext, "Failed to make the buffer pool active");
|
||||
gst_object_unref (new_pool);
|
||||
teletext->buf_pool = NULL;
|
||||
goto beach;
|
||||
}
|
||||
|
||||
teletext->buf_pool = new_pool;
|
||||
|
||||
beach:
|
||||
gst_query_unref (alloc);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_teletextdec_negotiate_caps (GstTeletextDec * teletext, guint width,
|
||||
guint height)
|
||||
{
|
||||
guint i, caps_size;
|
||||
gboolean rv = FALSE;
|
||||
|
||||
/* get the peer's caps filtered by our own ones. */
|
||||
GstCaps *ourcaps = gst_pad_query_caps (teletext->srcpad, NULL);
|
||||
GstCaps *peercaps = gst_pad_peer_query_caps (teletext->srcpad, ourcaps);
|
||||
gst_caps_unref (ourcaps);
|
||||
|
||||
if (gst_caps_is_empty (peercaps)) {
|
||||
goto beach;
|
||||
}
|
||||
|
||||
/* make them writable in case we need to fixate them (video/x-raw). */
|
||||
peercaps = gst_caps_make_writable (peercaps);
|
||||
caps_size = gst_caps_get_size (peercaps);
|
||||
|
||||
for (i = 0; i < caps_size; ++i) {
|
||||
GstStructure *caps_struct = gst_caps_get_structure (peercaps, i);
|
||||
const gchar *caps_name = gst_structure_get_name (caps_struct);
|
||||
const gchar *caps_fmt = gst_structure_get_string (caps_struct, "format");
|
||||
|
||||
if (g_strcmp0 (caps_name, "video/x-raw") == 0) {
|
||||
teletext->width = width;
|
||||
teletext->height = height;
|
||||
teletext->export_func = gst_teletextdec_export_rgba_page;
|
||||
gst_structure_set (caps_struct,
|
||||
"width", G_TYPE_INT, width,
|
||||
"height", G_TYPE_INT, height,
|
||||
"framerate", GST_TYPE_FRACTION, 0, 1, NULL);
|
||||
break;
|
||||
} else if ((g_strcmp0 (caps_name, "text/x-raw") == 0) &&
|
||||
(g_strcmp0 (caps_fmt, "utf-8") == 0)) {
|
||||
teletext->export_func = gst_teletextdec_export_text_page;
|
||||
break;
|
||||
} else if ((g_strcmp0 (caps_name, "text/x-raw") == 0) &&
|
||||
(g_strcmp0 (caps_fmt, "pango-markup") == 0)) {
|
||||
teletext->export_func = gst_teletextdec_export_pango_page;
|
||||
break;
|
||||
} else {
|
||||
goto beach;
|
||||
}
|
||||
}
|
||||
|
||||
if (!gst_pad_push_event (teletext->srcpad, gst_event_new_caps (peercaps))) {
|
||||
goto beach;
|
||||
}
|
||||
|
||||
/* try to get a bufferpool from the peer pad in case of RGBA output. */
|
||||
if (gst_teletextdec_export_rgba_page == teletext->export_func) {
|
||||
gst_teletextdec_try_get_buffer_pool (teletext, peercaps,
|
||||
width * height * sizeof (vbi_rgba));
|
||||
}
|
||||
|
||||
/* we can happily return a success now. */
|
||||
rv = TRUE;
|
||||
|
||||
beach:
|
||||
gst_caps_unref (peercaps);
|
||||
return rv;
|
||||
}
|
||||
|
||||
/* this function does the actual processing
|
||||
*/
|
||||
static GstFlowReturn
|
||||
gst_teletextdec_chain (GstPad * pad, GstBuffer * buf)
|
||||
gst_teletextdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
||||
{
|
||||
GstTeletextDec *teletext = GST_TELETEXTDEC (GST_PAD_PARENT (pad));
|
||||
GstTeletextDec *teletext = GST_TELETEXTDEC (parent);
|
||||
GstFlowReturn ret = GST_FLOW_OK;
|
||||
|
||||
teletext->in_timestamp = GST_BUFFER_TIMESTAMP (buf);
|
||||
teletext->in_duration = GST_BUFFER_DURATION (buf);
|
||||
|
||||
teletext->process_buf_func (teletext, buf);
|
||||
gst_teletextdec_process_telx_buffer (teletext, buf);
|
||||
gst_buffer_unref (buf);
|
||||
|
||||
g_mutex_lock (teletext->queue_lock);
|
||||
g_mutex_lock (&teletext->queue_lock);
|
||||
if (!g_queue_is_empty (teletext->queue)) {
|
||||
ret = gst_teletextdec_push_page (teletext);
|
||||
if (ret != GST_FLOW_OK) {
|
||||
g_mutex_unlock (teletext->queue_lock);
|
||||
g_mutex_unlock (&teletext->queue_lock);
|
||||
goto error;
|
||||
}
|
||||
}
|
||||
g_mutex_unlock (teletext->queue_lock);
|
||||
g_mutex_unlock (&teletext->queue_lock);
|
||||
|
||||
return ret;
|
||||
|
||||
|
|
@ -760,9 +766,9 @@ gst_teletextdec_push_page (GstTeletextDec * teletext)
|
|||
page_info *pi;
|
||||
gint pgno, subno;
|
||||
gboolean success;
|
||||
guint width, height;
|
||||
|
||||
pi = (page_info *) g_queue_pop_head (teletext->queue);
|
||||
|
||||
pi = g_queue_pop_head (teletext->queue);
|
||||
pgno = vbi_bcd2dec (pi->pgno);
|
||||
subno = vbi_bcd2dec (pi->subno);
|
||||
|
||||
|
|
@ -770,28 +776,31 @@ gst_teletextdec_push_page (GstTeletextDec * teletext)
|
|||
|
||||
success = vbi_fetch_vt_page (teletext->decoder, &page, pi->pgno, pi->subno,
|
||||
VBI_WST_LEVEL_3p5, 25, FALSE);
|
||||
g_free (pi);
|
||||
if (G_UNLIKELY (!success))
|
||||
goto fetch_page_failed;
|
||||
|
||||
switch (teletext->output_format) {
|
||||
case GST_TELETEXTDEC_OUTPUT_FORMAT_TEXT:
|
||||
ret = gst_teletextdec_export_text_page (teletext, &page, &buf);
|
||||
break;
|
||||
case GST_TELETEXTDEC_OUTPUT_FORMAT_HTML:
|
||||
ret = gst_teletextdec_export_html_page (teletext, &page, &buf);
|
||||
break;
|
||||
case GST_TELETEXTDEC_OUTPUT_FORMAT_RGBA:
|
||||
ret = gst_teletextdec_export_rgba_page (teletext, &page, &buf);
|
||||
break;
|
||||
case GST_TELETEXTDEC_OUTPUT_FORMAT_PANGO:
|
||||
ret = gst_teletextdec_export_pango_page (teletext, &page, &buf);
|
||||
break;
|
||||
default:
|
||||
g_assert_not_reached ();
|
||||
break;
|
||||
width = COLUMNS_TO_WIDTH (page.columns);
|
||||
height = ROWS_TO_HEIGHT (page.rows);
|
||||
|
||||
/* if output_func is NULL, we need to (re-)negotiate. also, it is possible
|
||||
* (though unlikely) that we received a page of a different size. */
|
||||
if (G_UNLIKELY (NULL == teletext->export_func ||
|
||||
teletext->width != width || teletext->height != height)) {
|
||||
/* if negotiate_caps returns FALSE, that means we weren't able to
|
||||
* negotiate. */
|
||||
if (G_UNLIKELY (!gst_teletextdec_negotiate_caps (teletext, width, height))) {
|
||||
ret = GST_FLOW_NOT_NEGOTIATED;
|
||||
goto push_failed;
|
||||
}
|
||||
if (G_UNLIKELY (teletext->segment)) {
|
||||
gst_pad_push_event (teletext->srcpad, teletext->segment);
|
||||
teletext->segment = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
teletext->export_func (teletext, &page, &buf);
|
||||
vbi_unref_page (&page);
|
||||
g_free (pi);
|
||||
|
||||
if (ret != GST_FLOW_OK)
|
||||
goto alloc_failed;
|
||||
|
|
@ -799,8 +808,8 @@ gst_teletextdec_push_page (GstTeletextDec * teletext)
|
|||
GST_BUFFER_TIMESTAMP (buf) = teletext->in_timestamp;
|
||||
GST_BUFFER_DURATION (buf) = teletext->in_duration;
|
||||
|
||||
GST_INFO_OBJECT (teletext, "Pushing buffer of size %d",
|
||||
GST_BUFFER_SIZE (buf));
|
||||
GST_INFO_OBJECT (teletext, "Pushing buffer of size %" G_GSIZE_FORMAT,
|
||||
gst_buffer_get_size (buf));
|
||||
|
||||
ret = gst_pad_push (teletext->srcpad, buf);
|
||||
if (ret != GST_FLOW_OK)
|
||||
|
|
@ -830,13 +839,13 @@ push_failed:
|
|||
}
|
||||
|
||||
static gchar **
|
||||
gst_teletextdec_vbi_page_to_text_lines (GstTeletextDec * teletext,
|
||||
guint start, guint stop, vbi_page * page)
|
||||
gst_teletextdec_vbi_page_to_text_lines (guint start, guint stop, vbi_page *
|
||||
page)
|
||||
{
|
||||
const guint lines_count = stop - start + 1;
|
||||
const guint line_length = page->columns;
|
||||
gchar **lines;
|
||||
gint i;
|
||||
guint i;
|
||||
|
||||
/* allocate a new NULL-terminated array of strings */
|
||||
lines = (gchar **) g_malloc (sizeof (gchar *) * (lines_count + 1));
|
||||
|
|
@ -858,8 +867,6 @@ static GstFlowReturn
|
|||
gst_teletextdec_export_text_page (GstTeletextDec * teletext, vbi_page * page,
|
||||
GstBuffer ** buf)
|
||||
{
|
||||
GstCaps *caps;
|
||||
GstFlowReturn ret;
|
||||
gchar *text;
|
||||
guint size;
|
||||
|
||||
|
|
@ -868,7 +875,7 @@ gst_teletextdec_export_text_page (GstTeletextDec * teletext, vbi_page * page,
|
|||
GString *subs;
|
||||
guint i;
|
||||
|
||||
lines = gst_teletextdec_vbi_page_to_text_lines (teletext, 1, 23, page);
|
||||
lines = gst_teletextdec_vbi_page_to_text_lines (1, 23, page);
|
||||
subs = g_string_new ("");
|
||||
/* Strip white spaces and squash blank lines */
|
||||
for (i = 0; i < 23; i++) {
|
||||
|
|
@ -892,52 +899,9 @@ gst_teletextdec_export_text_page (GstTeletextDec * teletext, vbi_page * page,
|
|||
}
|
||||
|
||||
/* Allocate new buffer */
|
||||
caps = gst_caps_new_simple ("text/plain", NULL);
|
||||
ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE,
|
||||
size, caps, &(*buf));
|
||||
if (G_LIKELY (ret == GST_FLOW_OK))
|
||||
GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) = (guint8 *) text;
|
||||
else
|
||||
gst_buffer_unref (*buf);
|
||||
*buf = gst_buffer_new_wrapped (text, size);
|
||||
|
||||
gst_caps_unref (caps);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_teletextdec_export_html_page (GstTeletextDec * teletext, vbi_page * page,
|
||||
GstBuffer ** buf)
|
||||
{
|
||||
GstCaps *caps;
|
||||
GstFlowReturn ret;
|
||||
gchar *html;
|
||||
gssize size;
|
||||
vbi_export *ex;
|
||||
gchar *err;
|
||||
|
||||
if (!(ex = vbi_export_new ("html", &err))) {
|
||||
GST_ELEMENT_ERROR (teletext, LIBRARY, SETTINGS,
|
||||
("Can't open the HTML export module: %s", err), (NULL));
|
||||
g_free (err);
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
/* export to NULL to get size of the memory needed to allocate the page */
|
||||
size = vbi_export_mem (ex, NULL, 0, page);
|
||||
if (size < 0)
|
||||
return GST_FLOW_ERROR;
|
||||
html = g_malloc (size);
|
||||
vbi_export_mem (ex, html, size, page);
|
||||
|
||||
/* Allocate new buffer */
|
||||
caps = gst_caps_new_simple ("text/html", NULL);
|
||||
ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE,
|
||||
size, caps, &(*buf));
|
||||
if (G_LIKELY (ret == GST_FLOW_OK))
|
||||
GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) = (guint8 *) html;
|
||||
|
||||
gst_caps_unref (caps);
|
||||
return ret;
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
|
|
@ -945,40 +909,34 @@ gst_teletextdec_export_rgba_page (GstTeletextDec * teletext, vbi_page * page,
|
|||
GstBuffer ** buf)
|
||||
{
|
||||
guint size;
|
||||
GstCaps *caps, *out_caps;
|
||||
GstFlowReturn ret;
|
||||
gint width, height;
|
||||
GstPadTemplate *templ;
|
||||
GstBuffer *lbuf;
|
||||
GstMapInfo buf_map;
|
||||
|
||||
/* one character occupies 12 x 10 pixels */
|
||||
width = page->columns * 12;
|
||||
height = page->rows * 10;
|
||||
size = teletext->width * teletext->height * sizeof (vbi_rgba);
|
||||
|
||||
caps = gst_caps_new_simple ("video/x-raw-rgb",
|
||||
"width", G_TYPE_INT, width,
|
||||
"height", G_TYPE_INT, height,
|
||||
"framerate", GST_TYPE_FRACTION, teletext->rate_numerator,
|
||||
teletext->rate_denominator, NULL);
|
||||
|
||||
templ = gst_static_pad_template_get (&src_template);
|
||||
out_caps = gst_caps_intersect (caps, gst_pad_template_get_caps (templ));
|
||||
gst_caps_unref (caps);
|
||||
gst_object_unref (templ);
|
||||
|
||||
size = (guint) width *(guint) height *sizeof (vbi_rgba);
|
||||
|
||||
ret = gst_pad_alloc_buffer_and_set_caps (teletext->srcpad,
|
||||
GST_BUFFER_OFFSET_NONE, size, out_caps, &(*buf));
|
||||
|
||||
if (ret == GST_FLOW_OK) {
|
||||
GST_DEBUG_OBJECT (teletext, "Creating image with %d rows and %d cols",
|
||||
page->rows, page->columns);
|
||||
vbi_draw_vt_page (page, VBI_PIXFMT_RGBA32_LE,
|
||||
(vbi_rgba *) GST_BUFFER_DATA (*buf), FALSE, TRUE);
|
||||
/* Allocate new buffer, using the negotiated pool if available. */
|
||||
if (teletext->buf_pool) {
|
||||
GstFlowReturn acquire_rv =
|
||||
gst_buffer_pool_acquire_buffer (teletext->buf_pool, &lbuf, NULL);
|
||||
if (acquire_rv != GST_FLOW_OK) {
|
||||
return acquire_rv;
|
||||
}
|
||||
} else {
|
||||
lbuf = gst_buffer_new_allocate (NULL, size, NULL);
|
||||
if (NULL == lbuf)
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
gst_caps_unref (out_caps);
|
||||
return ret;
|
||||
if (!gst_buffer_map (lbuf, &buf_map, GST_MAP_WRITE)) {
|
||||
gst_buffer_unref (lbuf);
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
vbi_draw_vt_page (page, VBI_PIXFMT_RGBA32_LE, buf_map.data, FALSE, TRUE);
|
||||
gst_buffer_unmap (lbuf, &buf_map);
|
||||
*buf = lbuf;
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
|
|
@ -990,10 +948,8 @@ gst_teletextdec_export_pango_page (GstTeletextDec * teletext, vbi_page * page,
|
|||
gchar **colors;
|
||||
gchar **lines;
|
||||
GString *subs;
|
||||
GstCaps *caps;
|
||||
GstFlowReturn ret;
|
||||
guint start, stop;
|
||||
guint i, j;
|
||||
guint start, stop, k;
|
||||
gint i, j;
|
||||
|
||||
colors = (gchar **) g_malloc (sizeof (gchar *) * (rows + 1));
|
||||
colors[rows] = g_strdup ('\0');
|
||||
|
|
@ -1013,77 +969,24 @@ gst_teletextdec_export_pango_page (GstTeletextDec * teletext, vbi_page * page,
|
|||
/* get an array of strings with each line of the telext page */
|
||||
start = teletext->subtitles_mode ? 1 : 0;
|
||||
stop = teletext->subtitles_mode ? rows - 2 : rows - 1;
|
||||
lines = gst_teletextdec_vbi_page_to_text_lines (teletext, start, stop, page);
|
||||
lines = gst_teletextdec_vbi_page_to_text_lines (start, stop, page);
|
||||
|
||||
/* format each line in pango markup */
|
||||
subs = g_string_new ("");
|
||||
for (i = start; i <= stop; i++) {
|
||||
for (k = start; k <= stop; k++) {
|
||||
g_string_append_printf (subs, PANGO_TEMPLATE,
|
||||
teletext->font_description, colors[i], lines[i - start]);
|
||||
teletext->font_description, colors[k], lines[k - start]);
|
||||
}
|
||||
|
||||
/* Allocate new buffer */
|
||||
caps = gst_caps_new_simple ("text/x-pango-markup", NULL);
|
||||
ret = gst_pad_alloc_buffer (teletext->srcpad, GST_BUFFER_OFFSET_NONE,
|
||||
subs->len + 1, caps, &(*buf));
|
||||
if (G_LIKELY (ret == GST_FLOW_OK))
|
||||
GST_BUFFER_DATA (*buf) = GST_BUFFER_MALLOCDATA (*buf) =
|
||||
(guint8 *) subs->str;
|
||||
else
|
||||
gst_buffer_unref (*buf);
|
||||
*buf = gst_buffer_new_wrapped (subs->str, subs->len + 1);
|
||||
|
||||
g_strfreev (lines);
|
||||
g_strfreev (colors);
|
||||
g_string_free (subs, FALSE);
|
||||
gst_caps_unref (caps);
|
||||
return ret;
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_teletextdec_push_preroll_buffer (GstTeletextDec * teletext)
|
||||
{
|
||||
GstFlowReturn ret;
|
||||
GstBuffer *buf;
|
||||
gboolean res = TRUE;
|
||||
GstStructure *structure;
|
||||
const gchar *mimetype;
|
||||
GstCaps *out_caps, *peer_caps, *pad_caps;
|
||||
|
||||
/* the stream is sparse, we send a dummy buffer for preroll */
|
||||
peer_caps = gst_pad_peer_get_caps (teletext->srcpad);
|
||||
pad_caps = gst_pad_get_caps (teletext->srcpad);
|
||||
out_caps = gst_caps_intersect (pad_caps, peer_caps);
|
||||
|
||||
if (gst_caps_is_empty (out_caps)) {
|
||||
res = FALSE;
|
||||
goto beach;
|
||||
}
|
||||
|
||||
gst_caps_truncate (out_caps);
|
||||
structure = gst_caps_get_structure (out_caps, 0);
|
||||
mimetype = gst_structure_get_name (structure);
|
||||
if (g_strcmp0 (mimetype, "video/x-raw-rgb") == 0) {
|
||||
/* omit preroll buffer for this format */
|
||||
goto beach;
|
||||
}
|
||||
|
||||
buf = gst_buffer_new_and_alloc (1);
|
||||
GST_BUFFER_DATA (buf)[0] = 0;
|
||||
gst_buffer_set_caps (buf, out_caps);
|
||||
ret = gst_pad_push (teletext->srcpad, buf);
|
||||
if (ret != GST_FLOW_OK)
|
||||
res = FALSE;
|
||||
|
||||
beach:
|
||||
{
|
||||
gst_caps_unref (out_caps);
|
||||
gst_caps_unref (pad_caps);
|
||||
gst_caps_unref (peer_caps);
|
||||
return res;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* Converts the line_offset / field_parity byte of a VBI data unit. */
|
||||
static void
|
||||
gst_teletextdec_lofp_to_line (guint * field, guint * field_line,
|
||||
|
|
@ -1160,9 +1063,9 @@ gst_teletextdec_line_address (GstTeletextDec * teletext,
|
|||
|
||||
static gboolean
|
||||
gst_teletextdec_extract_data_units (GstTeletextDec * teletext,
|
||||
GstTeletextFrame * f, guint8 * packet, guint * offset, gint size)
|
||||
GstTeletextFrame * f, const guint8 * packet, guint * offset, gsize size)
|
||||
{
|
||||
guint8 *data_unit;
|
||||
const guint8 *data_unit;
|
||||
guint i;
|
||||
|
||||
while (*offset < size) {
|
||||
|
|
@ -1243,3 +1146,18 @@ gst_teletextdec_extract_data_units (GstTeletextDec * teletext,
|
|||
}
|
||||
return VBI_SUCCESS;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
teletext_init (GstPlugin * teletext)
|
||||
{
|
||||
GST_DEBUG_CATEGORY_INIT (gst_teletextdec_debug, "teletext", 0,
|
||||
"Teletext decoder");
|
||||
return gst_element_register (teletext, "teletextdec", GST_RANK_NONE,
|
||||
GST_TYPE_TELETEXTDEC);
|
||||
}
|
||||
|
||||
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
teletext,
|
||||
"Teletext plugin",
|
||||
teletext_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
|
||||
|
|
|
|||
|
|
@ -41,16 +41,8 @@ typedef struct _GstTeletextDecClass GstTeletextDecClass;
|
|||
typedef struct _GstTeletextFrame GstTeletextFrame;
|
||||
typedef enum _GstTeletextOutputFormat GstTeletextOutputFormat;
|
||||
|
||||
enum _GstTeletextOutputFormat
|
||||
{
|
||||
GST_TELETEXTDEC_OUTPUT_FORMAT_RGBA,
|
||||
GST_TELETEXTDEC_OUTPUT_FORMAT_TEXT,
|
||||
GST_TELETEXTDEC_OUTPUT_FORMAT_HTML,
|
||||
GST_TELETEXTDEC_OUTPUT_FORMAT_PANGO
|
||||
};
|
||||
|
||||
typedef void (*GstTeletextProcessBufferFunc) (GstTeletextDec *
|
||||
teletext, GstBuffer * buf);
|
||||
typedef GstFlowReturn (*GstTeletextExportFunc) (GstTeletextDec * teletext,
|
||||
vbi_page * page, GstBuffer ** buf);
|
||||
|
||||
struct _GstTeletextDec
|
||||
{
|
||||
|
|
@ -58,6 +50,7 @@ struct _GstTeletextDec
|
|||
|
||||
GstPad *sinkpad;
|
||||
GstPad *srcpad;
|
||||
GstEvent *segment;
|
||||
|
||||
GstClockTime in_timestamp;
|
||||
GstClockTime in_duration;
|
||||
|
|
@ -71,17 +64,22 @@ struct _GstTeletextDec
|
|||
gchar *subtitles_template;
|
||||
gchar *font_description;
|
||||
|
||||
vbi_dvb_demux *demux;
|
||||
vbi_decoder *decoder;
|
||||
vbi_export *exporter;
|
||||
|
||||
GQueue *queue;
|
||||
GMutex *queue_lock;
|
||||
GMutex queue_lock;
|
||||
|
||||
GstTeletextFrame *frame;
|
||||
float last_ts;
|
||||
GstTeletextOutputFormat output_format;
|
||||
|
||||
GstTeletextProcessBufferFunc process_buf_func;
|
||||
GstTeletextExportFunc export_func;
|
||||
|
||||
/* negotiated size of the output image in RGBA mode. */
|
||||
guint width;
|
||||
guint height;
|
||||
|
||||
/* buffer pool received from the peer pad - used in RGBA output only. */
|
||||
GstBufferPool *buf_pool;
|
||||
};
|
||||
|
||||
struct _GstTeletextFrame
|
||||
|
|
|
|||
|
|
@ -1,43 +0,0 @@
|
|||
/*
|
||||
* GStreamer
|
||||
* Copyright (C) 2009 Sebastian Pölsterl <sebp@k-d-w.org>
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* mod1ify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
||||
* Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <gst/gst.h>
|
||||
#include "gstteletextdec.h"
|
||||
|
||||
/* entry point to initialize the plug-in
|
||||
* initialize the plug-in itself
|
||||
* register the element factories and other features
|
||||
*/
|
||||
static gboolean
|
||||
teletext_init (GstPlugin * teletext)
|
||||
{
|
||||
return gst_element_register (teletext, "teletextdec", GST_RANK_NONE,
|
||||
GST_TYPE_TELETEXTDEC);
|
||||
}
|
||||
|
||||
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
teletext,
|
||||
"Teletext plugin",
|
||||
teletext_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
|
||||
Loading…
Reference in a new issue