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/*
$Id: mpeg.h,v 1.1 2003/10/13 11:47:12 f1rmb Exp $
Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __VCD_MPEG_H__
#define __VCD_MPEG_H__
#include <string.h>
/* Public headers */
#include <libvcd/logging.h>
#include <libvcd/types.h>
/* Private headers */
#include "data_structures.h"
typedef enum {
MPEG_VERS_INVALID = 0,
MPEG_VERS_MPEG1 = 1,
MPEG_VERS_MPEG2 = 2
} mpeg_vers_t;
PRAGMA_BEGIN_PACKED
struct vcd_mpeg_scan_data_t {
uint8_t tag;
uint8_t len;
msf_t prev_ofs;
msf_t next_ofs;
msf_t back_ofs;
msf_t forw_ofs;
} GNUC_PACKED;
PRAGMA_END_PACKED
#define struct_vcd_mpeg_scan_data_t_SIZEOF 14
#define VCD_MPEG_SCAN_DATA_WARNS 8
typedef struct {
struct vcd_mpeg_packet_info {
bool video[3];
bool audio[3];
bool ogt[4];
bool padding;
bool pem;
bool zero;
bool system_header;
struct vcd_mpeg_scan_data_t *scan_data_ptr; /* points into actual packet memory! */
enum aps_t {
APS_NONE = 0,
APS_I, /* iframe */
APS_GI, /* gop + iframe */
APS_SGI, /* sequence + gop + iframe */
APS_ASGI /* aligned sequence + gop + iframe */
} aps;
double aps_pts;
int aps_idx;
bool has_pts;
double pts;
uint64_t scr;
unsigned muxrate;
bool gop;
struct {
uint8_t h, m, s, f;
} gop_timecode;
} packet;
struct vcd_mpeg_stream_info {
unsigned packets;
mpeg_vers_t version;
bool ogt[4];
struct vcd_mpeg_stream_vid_info {
bool seen;
unsigned hsize;
unsigned vsize;
double aratio;
double frate;
unsigned bitrate;
unsigned vbvsize;
bool constrained_flag;
VcdList *aps_list; /* filled up by vcd_mpeg_source */
double last_aps_pts; /* temp, see ->packet */
} shdr[3];
struct vcd_mpeg_stream_aud_info {
bool seen;
unsigned layer;
unsigned bitrate;
unsigned sampfreq;
enum {
MPEG_STEREO = 1,
MPEG_JOINT_STEREO,
MPEG_DUAL_CHANNEL,
MPEG_SINGLE_CHANNEL
} mode;
} ahdr[3];
unsigned muxrate;
bool seen_pts;
double min_pts;
double max_pts;
double playing_time;
unsigned scan_data;
unsigned scan_data_warnings;
} stream;
} VcdMpegStreamCtx;
int
vcd_mpeg_parse_packet (const void *buf, unsigned buflen, bool parse_pes,
VcdMpegStreamCtx *ctx);
typedef enum {
MPEG_NORM_OTHER,
MPEG_NORM_PAL,
MPEG_NORM_NTSC,
MPEG_NORM_FILM,
MPEG_NORM_PAL_S,
MPEG_NORM_NTSC_S
} mpeg_norm_t;
mpeg_norm_t
vcd_mpeg_get_norm (const struct vcd_mpeg_stream_vid_info *_info);
enum vcd_mpeg_packet_type {
PKT_TYPE_INVALID = 0,
PKT_TYPE_VIDEO,
PKT_TYPE_AUDIO,
PKT_TYPE_OGT,
PKT_TYPE_ZERO,
PKT_TYPE_EMPTY
};
enum vcd_mpeg_packet_type
vcd_mpeg_packet_get_type (const struct vcd_mpeg_packet_info *_info);
struct vcd_mpeg_stream_vid_type {
enum {
VID_TYPE_NONE = 0,
VID_TYPE_MOTION,
VID_TYPE_STILL
} type;
enum {
VID_NORM_OTHER = 0,
VID_NORM_PAL,
VID_NORM_NTSC
} norm;
enum {
VID_RES_OTHER = 0,
VID_RES_SIF,
VID_RES_HALF_D1,
VID_RES_2_3_D1,
VID_RES_FULL_D2
} resolution;
};
#endif /* __VCD_MPEG_H__ */
/*
* Local variables:
* c-file-style: "gnu"
* tab-width: 8
* indent-tabs-mode: nil
* End:
*/
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