1 /* GStreamer 2 * Copyright (C) <2020> Jan Schmidt <jan@centricular.com> 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public 15 * License along with this library; if not, write to the 16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20 #include <gst/gst.h> 21 #include <gst/video/video.h> 22 23 #define GST_TYPE_DVB_SUB_ENC (gst_dvb_sub_enc_get_type()) 24 #define GST_DVB_SUB_ENC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DVB_SUB_ENC,GstDvbSubEnc)) 25 #define GST_DVB_SUB_ENC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DVB_SUB_ENC,GstDvbSubEncClass)) 26 #define GST_IS_DVB_SUB_ENC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DVB_SUB_ENC)) 27 #define GST_IS_DVB_SUB_ENC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DVB_SUB_ENC)) 28 29 GST_DEBUG_CATEGORY_EXTERN (gst_dvb_sub_enc_debug); 30 #define GST_CAT_DEFAULT (gst_dvb_sub_enc_debug) 31 32 typedef struct _GstDvbSubEnc GstDvbSubEnc; 33 typedef struct _GstDvbSubEncClass GstDvbSubEncClass; 34 typedef struct SubpictureRect SubpictureRect; 35 36 struct SubpictureRect { 37 /* Paletted 8-bit picture */ 38 GstVideoFrame *frame; 39 /* Actual number of colours used from the palette */ 40 guint32 nb_colours; 41 42 guint x, y; 43 }; 44 45 struct _GstDvbSubEnc 46 { 47 GstElement element; 48 49 GstVideoInfo in_info; 50 GstPad *sinkpad; 51 GstPad *srcpad; 52 53 int object_version; 54 55 int max_colours; 56 GstClockTimeDiff ts_offset; 57 58 GstClockTime current_end_time; 59 }; 60 61 struct _GstDvbSubEncClass 62 { 63 GstElementClass parent_class; 64 }; 65 66 GType gst_dvb_sub_enc_get_type (void); 67 GST_ELEMENT_REGISTER_DECLARE (dvbsubenc); 68 69 gboolean gst_dvbsubenc_ayuv_to_ayuv8p (GstVideoFrame * src, GstVideoFrame * dest, int max_colours, guint32 *out_num_colours); 70 71 GstBuffer *gst_dvbenc_encode (int object_version, int page_id, SubpictureRect *s, guint num_subpictures); 72