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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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411 lines
14 KiB
C
411 lines
14 KiB
C
/* GStreamer
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* Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Dejan Sakelsak sahel@kiberpipa.org
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*/
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#ifndef __GST_RTP_H263_PAY_H__
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#define __GST_RTP_H263_PAY_H__
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#include <gst/gst.h>
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#include <gst/rtp/gstbasertppayload.h>
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#include <gst/base/gstadapter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_RTP_H263_PAY \
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(gst_rtp_h263_pay_get_type())
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#define GST_RTP_H263_PAY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_RTP_H263_PAY,GstRtpH263Pay))
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#define GST_RTP_H263_PAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_RTP_H263_PAY,GstRtpH263PayClass))
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#define GST_IS_RTP_H263_PAY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_RTP_H263_PAY))
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#define GST_IS_RTP_H263_PAY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_RTP_H263_PAY))
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// blocks per macroblock
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#define N_BLOCKS 6
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#define DEFAULT_MODE_A TRUE
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#define MTU_SECURITY_OFFSET 50
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typedef enum _GstRtpH263PayHeaderMode
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{
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GST_RTP_H263_PAYLOAD_HEADER_MODE_A = 4,
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GST_RTP_H263_PAYLOAD_HEADER_MODE_B = 8,
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GST_RTP_H263_PAYLOAD_HEADER_MODE_C = 12
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} GstRtpH263PayHeaderMode;
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typedef struct _GstRtpH263PayContext GstRtpH263PayContext;
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typedef struct _GstRtpH263PayPic GstRtpH263PayPic;
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typedef struct _GstRtpH263PayClass GstRtpH263PayClass;
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typedef struct _GstRtpH263Pay GstRtpH263Pay;
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typedef struct _GstRtpH263PayBoundry GstRtpH263PayBoundry;
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typedef struct _GstRtpH263PayMB GstRtpH263PayMB;
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typedef struct _GstRtpH263PayGob GstRtpH263PayGob;
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typedef struct _GstRtpH263PayPackage GstRtpH263PayPackage;
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//typedef enum _GstRtpH263PayHeaderMode GstRtpH263PayHeaderMode;
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struct _GstRtpH263Pay
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{
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GstBaseRTPPayload payload;
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GstAdapter *adapter;
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GstClockTime first_ts;
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gboolean prop_payload_mode;
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guint8 *data;
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guint available_data;
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};
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struct _GstRtpH263PayContext
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{
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GstRtpH263PayPic *piclayer;
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guint mtu;
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guint window;
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guint8 *win_end;
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guint8 cpm;
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GstRtpH263PayGob **gobs;
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};
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struct _GstRtpH263PayClass
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{
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GstBaseRTPPayloadClass parent_class;
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};
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typedef struct _GstRtpH263PayAHeader
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{
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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unsigned int ebit:3; /* End position */
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unsigned int sbit:3; /* Start position */
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unsigned int p:1; /* PB-frames mode */
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unsigned int f:1; /* flag bit */
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unsigned int r1:1; /* Reserved */
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unsigned int a:1; /* Advanced Prediction */
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unsigned int s:1; /* syntax based arithmetic coding */
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unsigned int u:1; /* Unrestricted motion vector */
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unsigned int i:1; /* Picture coding type */
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unsigned int src:3; /* Source format */
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unsigned int trb:3; /* Temporal ref for B frame */
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unsigned int dbq:2; /* Differential Quantisation parameter */
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unsigned int r2:3; /* Reserved */
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#elif G_BYTE_ORDER == G_BIG_ENDIAN
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unsigned int f:1; /* flag bit */
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unsigned int p:1; /* PB-frames mode */
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unsigned int sbit:3; /* Start position */
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unsigned int ebit:3; /* End position */
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unsigned int src:3; /* Source format */
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unsigned int i:1; /* Picture coding type */
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unsigned int u:1; /* Unrestricted motion vector */
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unsigned int s:1; /* syntax based arithmetic coding */
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unsigned int a:1; /* Advanced Prediction */
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unsigned int r1:1; /* Reserved */
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unsigned int r2:3; /* Reserved */
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unsigned int dbq:2; /* Differential Quantisation parameter */
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unsigned int trb:3; /* Temporal ref for B frame */
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#else
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#error "G_BYTE_ORDER should be big or little endian."
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#endif
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unsigned int tr:8; /* Temporal ref for P frame */
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} GstRtpH263PayAHeader;
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typedef struct _GstRtpH263PayBHeader
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{
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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unsigned int ebit:3; /* End position */
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unsigned int sbit:3; /* Start position */
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unsigned int p:1; /* PB-frames mode */
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unsigned int f:1; /* flag bit */
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unsigned int quant:5; /* Quantization value for first MB */
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unsigned int src:3; /* Source format */
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unsigned int mba1:3; /* Address of first MB starting count from 0 - part1 */
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unsigned int gobn:5; /* GOB number in effect at start of packet */
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unsigned int r:2; /* Reserved */
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unsigned int mba2:6; /* Address of first MB starting count from 0 - part2 */
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unsigned int hmv11:4; /* horizontal motion vector predictor for MB 1 - part 1 */
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unsigned int a:1; /* Advanced Prediction */
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unsigned int s:1; /* syntax based arithmetic coding */
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unsigned int u:1; /* Unrestricted motion vector */
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unsigned int i:1; /* Picture coding type */
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unsigned int vmv11:5; /* vertical motion vector predictor for MB 1 - part 1 */
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unsigned int hmv12:3; /* horizontal motion vector predictor for MB 1 - part 2 */
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unsigned int hmv21:6; /* horizontal motion vector predictor for MB 3 - part 1 */
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unsigned int vmv12:2; /* vertical motion vector predictor for MB 1 - part 2 */
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unsigned int vmv21:7; /* vertical motion vector predictor for MB 3 */
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unsigned int hmv22:1; /* horizontal motion vector predictor for MB 3 - part 2 */
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#elif G_BYTE_ORDER == G_BIG_ENDIAN
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unsigned int f:1; /* flag bit */
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unsigned int p:1; /* PB-frames mode */
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unsigned int sbit:3; /* Start position */
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unsigned int ebit:3; /* End position */
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unsigned int src:3; /* Source format */
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unsigned int quant:5; /* Quantization value for first MB */
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unsigned int gobn:5; /* GOB number in effect at start of packet */
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unsigned int mba1:3; /* Address of first MB starting count from 0 - part1 */
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unsigned int mba2:6; /* Address of first MB starting count from 0 - part2 */
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unsigned int r:2; /* Reserved */
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unsigned int i:1; /* Picture coding type */
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unsigned int u:1; /* Unrestricted motion vector */
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unsigned int s:1; /* syntax based arithmetic coding */
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unsigned int a:1; /* Advanced Prediction */
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unsigned int hmv11:4; /* horizontal motion vector predictor for MB 1 - part 1 */
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unsigned int hmv12:3; /* horizontal motion vector predictor for MB 1 - part 2 */
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unsigned int vmv11:5; /* vertical motion vector predictor for MB 1 - part 1 */
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unsigned int vmv12:2; /* vertical motion vector predictor for MB 1 - part 2 */
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unsigned int hmv21:6; /* horizontal motion vector predictor for MB 3 - part 1 */
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unsigned int hmv22:1; /* horizontal motion vector predictor for MB 3 - part 2 */
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unsigned int vmv21:7 /* vertical motion vector predictor for MB 3 */
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#else
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#error "G_BYTE_ORDER should be big or little endian."
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#endif
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} GstRtpH263PayBHeader;
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typedef struct _GstRtpH263PayCHeader
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{
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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unsigned int ebit:3; /* End position */
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unsigned int sbit:3; /* Start position */
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unsigned int p:1; /* PB-frames mode */
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unsigned int f:1; /* flag bit */
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unsigned int quant:5; /* Quantization value for first MB */
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unsigned int src:3; /* Source format */
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unsigned int mba1:3; /* Address of first MB starting count from 0 - part1 */
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unsigned int gobn:5; /* GOB number in effect at start of packet */
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unsigned int r:2; /* Reserved */
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unsigned int mba2:6; /* Address of first MB starting count from 0 - part2 */
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unsigned int hmv11:4; /* horizontal motion vector predictor for MB 1 - part 1 */
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unsigned int a:1; /* Advanced Prediction */
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unsigned int s:1; /* syntax based arithmetic coding */
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unsigned int u:1; /* Unrestricted motion vector */
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unsigned int i:1; /* Picture coding type */
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unsigned int vmv11:5; /* vertical motion vector predictor for MB 1 - part 1 */
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unsigned int hmv12:3; /* horizontal motion vector predictor for MB 1 - part 2 */
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unsigned int hmv21:6; /* horizontal motion vector predictor for MB 3 - part 1 */
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unsigned int vmv12:2; /* vertical motion vector predictor for MB 1 - part 2 */
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unsigned int vmv21:7; /* vertical motion vector predictor for MB 3 */
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unsigned int hmv22:1; /* horizontal motion vector predictor for MB 3 - part 2 */
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unsigned int rr1:8; /* reserved */
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unsigned int rr2:8; /* reserved */
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unsigned int trb:3; /* Temporal Reference for the B */
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unsigned int dbq:2; /* Differential quantization parameter */
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unsigned int rr3:3; /* reserved */
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unsigned int tr:8; /* Temporal Reference for the P frame */
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#elif G_BYTE_ORDER == G_BIG_ENDIAN
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unsigned int f:1; /* flag bit */
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unsigned int p:1; /* PB-frames mode */
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unsigned int sbit:3; /* Start position */
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unsigned int ebit:3; /* End position */
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unsigned int src:3; /* Source format */
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unsigned int quant:5; /* Quantization value for first MB */
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unsigned int gobn:5; /* GOB number in effect at start of packet */
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unsigned int mba1:3; /* Address of first MB starting count from 0 - part1 */
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unsigned int mba2:6; /* Address of first MB starting count from 0 - part2 */
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unsigned int r:2; /* Reserved */
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unsigned int i:1; /* Picture coding type */
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unsigned int u:1; /* Unrestricted motion vector */
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unsigned int s:1; /* syntax based arithmetic coding */
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unsigned int a:1; /* Advanced Prediction */
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unsigned int hmv11:4; /* horizontal motion vector predictor for MB 1 - part 1 */
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unsigned int hmv12:3; /* horizontal motion vector predictor for MB 1 - part 2 */
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unsigned int vmv11:5; /* vertical motion vector predictor for MB 1 - part 1 */
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unsigned int vmv12:2; /* vertical motion vector predictor for MB 1 - part 2 */
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unsigned int hmv21:6; /* horizontal motion vector predictor for MB 3 - part 1 */
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unsigned int hmv22:1; /* horizontal motion vector predictor for MB 3 - part 2 */
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unsigned int vmv21:7 /* vertical motion vector predictor for MB 3 */
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unsigned int rr1:8; /* reserved */
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unsigned int rr2:8; /* reserved */
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unsigned int rr3:3; /* reserved */
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unsigned int dbq:2; /* Differential quantization parameter */
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unsigned int trb:3; /* Temporal Reference for the B */
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unsigned int tr:8; /* Temporal Reference for the P frame */
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#else
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#error "G_BYTE_ORDER should be big or little endian."
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#endif
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} GstRtpH263PayCHeader;
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struct _GstRtpH263PayPic
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{
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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unsigned int psc1:16;
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unsigned int tr1:2;
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unsigned int psc2:6;
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unsigned int ptype_263:1;
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unsigned int ptype_start:1;
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unsigned int tr2:6;
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unsigned int ptype_umvmode:1;
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unsigned int ptype_pictype:1;
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unsigned int ptype_srcformat:3;
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unsigned int ptype_freeze:1;
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unsigned int ptype_camera:1;
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unsigned int ptype_split:1;
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unsigned int pquant:5;
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unsigned int ptype_pbmode:1;
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unsigned int ptype_apmode:1;
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unsigned int ptype_sacmode:1;
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#elif G_BYTE_ORDER == G_BIG_ENDIAN
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unsigned int psc1:16;
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unsigned int psc2:6;
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unsigned int tr1:2;
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unsigned int tr2:6;
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unsigned int ptype_start:2;
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unsigned int ptype_split:1;
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unsigned int ptype_camera:1;
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unsigned int ptype_freeze:1;
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unsigned int ptype_srcformat:3;
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unsigned int ptype_pictype:1;
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unsigned int ptype_umvmode:1;
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unsigned int ptype_sacmode:1;
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unsigned int ptype_apmode:1;
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unsigned int ptype_pbmode:1;
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unsigned int pquant:5;
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#else
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#error "G_BYTE_ORDER should be big or little endian."
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#endif
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};
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struct _GstRtpH263PayBoundry
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{
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guint8 *start;
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guint8 *end;
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guint8 sbit;
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guint8 ebit;
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};
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struct _GstRtpH263PayMB
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{
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guint8 *start;
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guint8 *end;
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guint8 sbit;
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guint8 ebit;
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guint length;
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guint8 mb_type;
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guint quant;
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guint mba;
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guint8 mvd[10];
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};
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struct _GstRtpH263PayGob
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{
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guint8 *start;
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guint8 *end;
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guint length;
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guint8 sbit;
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guint8 ebit;
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guint gobn;
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guint quant;
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GstRtpH263PayMB **macroblocks;
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guint nmacroblocs;
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};
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struct _GstRtpH263PayPackage
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{
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guint8 *payload_start;
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guint8 *payload_end;
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guint payload_len;
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guint8 sbit;
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guint8 ebit;
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GstBuffer *outbuf;
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gboolean marker;
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GstRtpH263PayHeaderMode mode;
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/*
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* mode B,C data
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*/
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guint16 mba;
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guint nmvd;
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guint8 mvd[10];
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guint gobn;
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guint quant;
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};
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#define GST_H263_PICTURELAYER_PLSRC(buf) (((GstRtpH263PayPic *)(buf))->ptype_srcformat)
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#define GST_H263_PICTURELAYER_PLTYPE(buf) (((GstRtpH263PayPic *)(buf))->ptype_pictype)
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#define GST_H263_PICTURELAYER_PLUMV(buf) (((GstRtpH263PayPic *)(buf))->ptype_umvmode)
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#define GST_H263_PICTURELAYER_PLSAC(buf) (((GstRtpH263PayPic *)(buf))->ptype_sacmode)
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#define GST_H263_PICTURELAYER_PLAP(buf) (((GstRtpH263PayPic *)(buf))->ptype_apmode)
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/*
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* TODO: PB frame relevant tables
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*/
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#define GST_RTP_H263_PAY_END(start, len) (((guint8 *)start) + ((guint)len))
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#define GST_RTP_H263_PAY_GOBN(gob) (((((guint8 *) gob)[2] >> 2) & 0x1f)
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gboolean gst_rtp_h263_pay_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif /* __GST_RTP_H263_PAY_H__ */
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