mpeg_es.h

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/*
 * Copyright (c) 2013-2014 - Andre Roth <neolynx@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation version 2.1 of the License.
 *
 * This program 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 */
 
#ifndef _MPEG_ES_H
#define _MPEG_ES_H
 
#include <stdint.h>
#include <unistd.h> /* ssize_t */
 
#define DVB_MPEG_ES_PIC_START  0x00
#define DVB_MPEG_ES_USER_DATA  0xb2
#define DVB_MPEG_ES_SEQ_START  0xb3
#define DVB_MPEG_ES_SEQ_EXT    0xb5
#define DVB_MPEG_ES_GOP        0xb8
#define DVB_MPEG_ES_SLICES     0x01 ... 0xaf
 
struct dvb_mpeg_es_seq_start {
        union {
                uint32_t bitfield;
                struct {
                        uint32_t  type:8;
                        uint32_t  sync:24;
                } __attribute__((packed));
        } __attribute__((packed));
        union {
                uint32_t bitfield2;
                struct {
                        uint32_t framerate:4;
                        uint32_t aspect:4;
                        uint32_t height:12;
                        uint32_t width:12;
                } __attribute__((packed));
        } __attribute__((packed));
        union {
                uint32_t bitfield3;
                struct {
                        uint32_t qm_nonintra:1;
                        uint32_t qm_intra:1;
                        uint32_t constrained:1;
                        uint32_t vbv:10; // Size of video buffer verifier = 16*1024*vbv buf size
                        uint32_t one:1;
                        uint32_t bitrate:18;
                } __attribute__((packed));
        } __attribute__((packed));
} __attribute__((packed));
 
struct dvb_mpeg_es_pic_start {
        union {
                uint32_t bitfield;
                struct {
                        uint32_t  type:8;
                        uint32_t  sync:24;
                } __attribute__((packed));
        } __attribute__((packed));
        union {
                uint32_t bitfield2;
                struct {
                        uint32_t dummy:3;
                        uint32_t vbv_delay:16;
                        uint32_t coding_type:3;
                        uint32_t temporal_ref:10;
                } __attribute__((packed));
        } __attribute__((packed));
} __attribute__((packed));
 
enum dvb_mpeg_es_frame_t
{
        DVB_MPEG_ES_FRAME_UNKNOWN,
        DVB_MPEG_ES_FRAME_I,
        DVB_MPEG_ES_FRAME_P,
        DVB_MPEG_ES_FRAME_B,
        DVB_MPEG_ES_FRAME_D
};
 
extern const char *dvb_mpeg_es_frame_names[5];
 
struct dvb_v5_fe_parms;
 
#ifdef __cplusplus
extern "C" {
#endif
 
int  dvb_mpeg_es_seq_start_init (const uint8_t *buf, ssize_t buflen,
                struct dvb_mpeg_es_seq_start *seq_start);
 
void dvb_mpeg_es_seq_start_print(struct dvb_v5_fe_parms *parms,
                struct dvb_mpeg_es_seq_start *seq_start);
 
int  dvb_mpeg_es_pic_start_init (const uint8_t *buf, ssize_t buflen,
                struct dvb_mpeg_es_pic_start *pic_start);
 
void dvb_mpeg_es_pic_start_print(struct dvb_v5_fe_parms *parms,
                struct dvb_mpeg_es_pic_start *pic_start);
 
#ifdef __cplusplus
}
#endif
 
#endif