1 /* GStreamer 2 * Copyright (C) <2014> Stian Selnes <stian@pexip.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., 59 Temple Place - Suite 330, 17 * Boston, MA 02111-1307, USA. 18 * 19 * Author: Dejan Sakelsak sahel@kiberpipa.org 20 */ 21 22 #ifndef __GST_RTP_H261_PAY_H__ 23 #define __GST_RTP_H261_PAY_H__ 24 25 #include <gst/gst.h> 26 #include <gst/rtp/gstrtpbasepayload.h> 27 #include <gst/base/gstadapter.h> 28 29 G_BEGIN_DECLS 30 #define GST_TYPE_RTP_H261_PAY \ 31 (gst_rtp_h261_pay_get_type()) 32 #define GST_RTP_H261_PAY(obj) \ 33 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_H261_PAY,GstRtpH261Pay)) 34 #define GST_RTP_H261_PAY_CLASS(klass) \ 35 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_H261_PAY,GstRtpH261PayClass)) 36 #define GST_IS_RTP_H261_PAY(obj) \ 37 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_H261_PAY)) 38 #define GST_IS_RTP_H261_PAY_CLASS(klass) \ 39 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_H261_PAY)) 40 typedef struct _GstRtpH261PayClass GstRtpH261PayClass; 41 typedef struct _GstRtpH261Pay GstRtpH261Pay; 42 43 struct _GstRtpH261Pay 44 { 45 GstRTPBasePayload payload; 46 47 GstAdapter *adapter; 48 gint offset; 49 GstClockTime timestamp; 50 }; 51 52 struct _GstRtpH261PayClass 53 { 54 GstRTPBasePayloadClass parent_class; 55 }; 56 57 typedef struct _GstRtpH261PayHeader 58 { 59 #if G_BYTE_ORDER == G_LITTLE_ENDIAN 60 unsigned int v:1; /* Motion vector flag */ 61 unsigned int i:1; /* Intra encoded data */ 62 unsigned int ebit:3; /* End position */ 63 unsigned int sbit:3; /* Start position */ 64 65 unsigned int mbap1:4; /* MB address predictor - part1 */ 66 unsigned int gobn:4; /* GOB number */ 67 68 unsigned int hmvd1:2; /* Horizontal motion vector data - part1 */ 69 unsigned int quant:5; /* Quantizer */ 70 unsigned int mbap2:1; /* MB address predictor - part2 */ 71 72 unsigned int vmvd:5; /* Horizontal motion vector data - part1 */ 73 unsigned int hmvd2:3; /* Vertical motion vector data */ 74 #elif G_BYTE_ORDER == G_BIG_ENDIAN 75 unsigned int sbit:3; /* Start position */ 76 unsigned int ebit:3; /* End position */ 77 unsigned int i:1; /* Intra encoded data */ 78 unsigned int v:1; /* Motion vector flag */ 79 80 unsigned int gobn:4; /* GOB number */ 81 unsigned int mbap1:4; /* MB address predictor - part1 */ 82 83 unsigned int mbap2:1; /* MB address predictor - part2 */ 84 unsigned int quant:5; /* Quantizer */ 85 unsigned int hmvd1:2; /* Horizontal motion vector data - part1 */ 86 87 unsigned int hmvd2:3; /* Vertical motion vector data */ 88 unsigned int vmvd:5; /* Horizontal motion vector data - part1 */ 89 #else 90 #error "G_BYTE_ORDER should be big or little endian." 91 #endif 92 } GstRtpH261PayHeader; 93 #define GST_RTP_H261_PAYLOAD_HEADER_LEN 4 94 95 GType gst_rtp_h261_pay_get_type (void); 96 97 gboolean gst_rtp_h261_pay_plugin_init (GstPlugin * plugin); 98 99 G_END_DECLS 100 #endif /* __GST_RTP_H261_PAY_H__ */ 101