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mpv/libmpdemux/demuxer.h

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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPLAYER_DEMUXER_H
#define MPLAYER_DEMUXER_H
#include <sys/types.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "stream/stream.h"
#include "bstr.h"
struct MPOpts;
#ifdef HAVE_BUILTIN_EXPECT
#define likely(x) __builtin_expect ((x) != 0, 1)
#define unlikely(x) __builtin_expect ((x) != 0, 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#define MAX_PACKS 4096
#define MAX_PACK_BYTES 0x8000000 // 128 MiB
#define DEMUXER_TYPE_UNKNOWN 0
#define DEMUXER_TYPE_MPEG_ES 1
#define DEMUXER_TYPE_MPEG_PS 2
#define DEMUXER_TYPE_AVI 3
#define DEMUXER_TYPE_AVI_NI 4
#define DEMUXER_TYPE_AVI_NINI 5
#define DEMUXER_TYPE_ASF 6
#define DEMUXER_TYPE_MOV 7
#define DEMUXER_TYPE_VIVO 8
#define DEMUXER_TYPE_TV 9
#define DEMUXER_TYPE_FLI 10
#define DEMUXER_TYPE_REAL 11
#define DEMUXER_TYPE_Y4M 12
#define DEMUXER_TYPE_FILM 14
#define DEMUXER_TYPE_ROQ 15
#define DEMUXER_TYPE_MF 16
#define DEMUXER_TYPE_AUDIO 17
#define DEMUXER_TYPE_OGG 18
#define DEMUXER_TYPE_RAWAUDIO 20
#define DEMUXER_TYPE_RTP 21
#define DEMUXER_TYPE_RAWDV 22
#define DEMUXER_TYPE_PVA 23
#define DEMUXER_TYPE_SMJPEG 24
#define DEMUXER_TYPE_XMMS 25
#define DEMUXER_TYPE_RAWVIDEO 26
#define DEMUXER_TYPE_MPEG4_ES 27
#define DEMUXER_TYPE_GIF 28
#define DEMUXER_TYPE_MPEG_TS 29
#define DEMUXER_TYPE_H264_ES 30
#define DEMUXER_TYPE_MATROSKA 31
#define DEMUXER_TYPE_REALAUDIO 32
#define DEMUXER_TYPE_MPEG_TY 33
#define DEMUXER_TYPE_LMLM4 34
#define DEMUXER_TYPE_LAVF 35
#define DEMUXER_TYPE_NSV 36
#define DEMUXER_TYPE_VQF 37
#define DEMUXER_TYPE_AVS 38
#define DEMUXER_TYPE_AAC 39
#define DEMUXER_TYPE_MPC 40
#define DEMUXER_TYPE_MPEG_PES 41
#define DEMUXER_TYPE_MPEG_GXF 42
#define DEMUXER_TYPE_NUT 43
#define DEMUXER_TYPE_LAVF_PREFERRED 44
#define DEMUXER_TYPE_RTP_NEMESI 45
#define DEMUXER_TYPE_MNG 46
// This should always match the higest demuxer type number.
// Unless you want to disallow users to force the demuxer to some types
#define DEMUXER_TYPE_MIN 0
#define DEMUXER_TYPE_MAX 46
#define DEMUXER_TYPE_DEMUXERS (1<<16)
// A virtual demuxer type for the network code
#define DEMUXER_TYPE_PLAYLIST (2<<16)
#define MP_NOPTS_VALUE (-1LL<<63) //both int64_t and double should be able to represent this exactly
// DEMUXER control commands/answers
#define DEMUXER_CTRL_NOTIMPL -1
#define DEMUXER_CTRL_DONTKNOW 0
#define DEMUXER_CTRL_OK 1
#define DEMUXER_CTRL_GUESS 2
#define DEMUXER_CTRL_GET_TIME_LENGTH 10
#define DEMUXER_CTRL_GET_PERCENT_POS 11
#define DEMUXER_CTRL_SWITCH_AUDIO 12
#define DEMUXER_CTRL_RESYNC 13
#define DEMUXER_CTRL_SWITCH_VIDEO 14
#define DEMUXER_CTRL_IDENTIFY_PROGRAM 15
#define DEMUXER_CTRL_CORRECT_PTS 16
#define SEEK_ABSOLUTE (1 << 0)
#define SEEK_FACTOR (1 << 1)
#define SEEK_FORWARD (1 << 2)
#define SEEK_BACKWARD (1 << 3)
#define MP_INPUT_BUFFER_PADDING_SIZE 64
// Holds one packet/frame/whatever
typedef struct demux_packet {
int len;
double pts;
double endpts;
double stream_pts;
off_t pos; // position in index (AVI) or file (MPG)
unsigned char* buffer;
int flags; // keyframe, etc
int refcount; //refcounter for the master packet, if 0, buffer can be free()d
struct demux_packet *master; //pointer to the master packet if this one is a cloned one
struct demux_packet *next;
} demux_packet_t;
typedef struct demux_stream {
int buffer_pos; // current buffer position
int buffer_size; // current buffer size
unsigned char* buffer; // current buffer, never free() it, always use free_demux_packet(buffer_ref);
double pts; // current buffer's pts
int pts_bytes; // number of bytes read after last pts stamp
int eof; // end of demuxed stream? (true if all buffer empty)
off_t pos; // position in the input stream (file)
off_t dpos; // position in the demuxed stream
int pack_no; // serial number of packet
int flags; // flags of current packet (keyframe etc)
int non_interleaved; // 1 if this stream is not properly interleaved,
// so e.g. subtitle handling must do explicit reads.
//---------------
int packs; // number of packets in buffer
int bytes; // total bytes of packets in buffer
demux_packet_t *first; // read to current buffer from here
demux_packet_t *last; // append new packets from input stream to here
demux_packet_t *current;// needed for refcounting of the buffer
int id; // stream ID (for multiple audio/video streams)
struct demuxer *demuxer; // parent demuxer structure (stream handler)
// ---- asf -----
demux_packet_t *asf_packet; // read asf fragments here
int asf_seq;
// ---- mov -----
unsigned int ss_mul,ss_div;
// ---- stream header ----
void* sh;
} demux_stream_t;
typedef struct demuxer_info {
char *name;
char *author;
char *encoder;
char *comments;
char *copyright;
} demuxer_info_t;
#define MAX_A_STREAMS 256
#define MAX_V_STREAMS 256
#define MAX_S_STREAMS 256
struct demuxer;
/**
* Demuxer description structure
*/
typedef struct demuxer_desc {
const char *info; ///< What is it (long name and/or description)
const char *name; ///< Demuxer name, used with -demuxer switch
const char *shortdesc; ///< Description printed at demuxer detection
const char *author; ///< Demuxer author(s)
const char *comment; ///< Comment, printed with -demuxer help
int type; ///< DEMUXER_TYPE_xxx
int safe_check; ///< If 1 detection is safe and fast, do it before file extension check
/// Check if can demux the file, return DEMUXER_TYPE_xxx on success
int (*check_file)(struct demuxer *demuxer); ///< Mandatory if safe_check == 1, else optional
/// Get packets from file, return 0 on eof
int (*fill_buffer)(struct demuxer *demuxer, demux_stream_t *ds); ///< Mandatory
/// Open the demuxer, return demuxer on success, NULL on failure
struct demuxer* (*open)(struct demuxer *demuxer); ///< Optional
/// Close the demuxer
void (*close)(struct demuxer *demuxer); ///< Optional
// Seek
void (*seek)(struct demuxer *demuxer, float rel_seek_secs, float audio_delay, int flags); ///< Optional
// Control
int (*control)(struct demuxer *demuxer, int cmd, void *arg); ///< Optional
} demuxer_desc_t;
typedef struct demux_chapter
{
uint64_t start, end;
char* name;
} demux_chapter_t;
struct matroska_data {
unsigned char segment_uid[16];
// Ordered chapter information if any
struct matroska_chapter {
uint64_t start;
uint64_t end;
bool has_segment_uid;
unsigned char segment_uid[16];
char *name;
} *ordered_chapters;
int num_ordered_chapters;
};
typedef struct demux_attachment
{
char* name;
char* type;
void* data;
unsigned int data_size;
} demux_attachment_t;
typedef struct demuxer {
const demuxer_desc_t *desc; ///< Demuxer description structure
off_t filepos; // input stream current pos.
off_t movi_start;
off_t movi_end;
stream_t *stream;
double stream_pts; // current stream pts, if applicable (e.g. dvd)
double reference_clock;
char *filename; ///< Needed by avs_check_file
int synced; // stream synced (used by mpeg)
int type; // demuxer type: mpeg PS, mpeg ES, avi, avi-ni, avi-nini, asf
int file_format; // file format: mpeg/avi/asf
int seekable; // flag
/* Set if using absolute seeks for small movements is OK (no pts resets
* that would make pts ambigious, preferably supports back/forward flags */
bool accurate_seek;
//
demux_stream_t *audio; // audio buffer/demuxer
demux_stream_t *video; // video buffer/demuxer
demux_stream_t *sub; // dvd subtitle buffer/demuxer
// stream headers:
struct sh_audio *a_streams[MAX_A_STREAMS];
struct sh_video *v_streams[MAX_V_STREAMS];
struct sh_sub *s_streams[MAX_S_STREAMS];
// pointer to teletext decoder private data, if demuxer stream contains teletext
void *teletext;
demux_chapter_t* chapters;
int num_chapters;
demux_attachment_t* attachments;
int num_attachments;
struct matroska_data matroska_data;
void* priv; // fileformat-dependent data
char** info;
struct MPOpts *opts;
} demuxer_t;
typedef struct {
int progid; //program id
int aid, vid, sid; //audio, video and subtitle id
} demux_program_t;
static inline demux_packet_t* new_demux_packet(int len){
demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
dp->len=len;
dp->next=NULL;
dp->pts=MP_NOPTS_VALUE;
dp->endpts=MP_NOPTS_VALUE;
dp->stream_pts = MP_NOPTS_VALUE;
dp->pos=0;
dp->flags=0;
dp->refcount=1;
dp->master=NULL;
dp->buffer=NULL;
if (len > 0 && (dp->buffer = (unsigned char *)malloc(len + MP_INPUT_BUFFER_PADDING_SIZE)))
memset(dp->buffer + len, 0, 8);
else
dp->len = 0;
return dp;
}
static inline void resize_demux_packet(demux_packet_t* dp, int len)
{
if(len > 0)
{
dp->buffer=(unsigned char *)realloc(dp->buffer,len+8);
}
else
{
if(dp->buffer) free(dp->buffer);
dp->buffer=NULL;
}
dp->len=len;
if (dp->buffer)
memset(dp->buffer + len, 0, 8);
else
dp->len = 0;
}
static inline demux_packet_t* clone_demux_packet(demux_packet_t* pack){
demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
while(pack->master) pack=pack->master; // find the master
memcpy(dp,pack,sizeof(demux_packet_t));
dp->next=NULL;
dp->refcount=0;
dp->master=pack;
pack->refcount++;
return dp;
}
static inline void free_demux_packet(demux_packet_t* dp){
if (dp->master==NULL){ //dp is a master packet
dp->refcount--;
if (dp->refcount==0){
if (dp->buffer) free(dp->buffer);
free(dp);
}
return;
}
// dp is a clone:
free_demux_packet(dp->master);
free(dp);
}
#ifndef SIZE_MAX
#define SIZE_MAX ((size_t)-1)
#endif
static inline void *realloc_struct(void *ptr, size_t nmemb, size_t size) {
if (nmemb > SIZE_MAX / size) {
free(ptr);
return NULL;
}
return realloc(ptr, nmemb * size);
}
demux_stream_t* new_demuxer_stream(struct demuxer *demuxer,int id);
demuxer_t* new_demuxer(struct MPOpts *opts, stream_t *stream,int type,int a_id,int v_id,int s_id,char *filename);
void free_demuxer_stream(demux_stream_t *ds);
void free_demuxer(demuxer_t *demuxer);
void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp);
void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len, double pts, off_t pos, int flags);
int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds);
int ds_fill_buffer(demux_stream_t *ds);
static inline off_t ds_tell(demux_stream_t *ds){
return (ds->dpos-ds->buffer_size)+ds->buffer_pos;
}
static inline int ds_tell_pts(demux_stream_t *ds){
return (ds->pts_bytes-ds->buffer_size)+ds->buffer_pos;
}
int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len);
int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
int *read, uint32_t pattern);
#define demux_peekc(ds) (\
(likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos] \
:((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos] ) )
#if 1
#define demux_getc(ds) (\
(likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos++] \
:((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos++] ) )
#else
static inline int demux_getc(demux_stream_t *ds){
if(ds->buffer_pos>=ds->buffer_size){
if(!ds_fill_buffer(ds)){
// printf("DEMUX_GETC: EOF reached!\n");
return -1; // EOF
}
}
// printf("[%02X]",ds->buffer[ds->buffer_pos]);
return ds->buffer[ds->buffer_pos++];
}
#endif
void ds_free_packs(demux_stream_t *ds);
int ds_get_packet(demux_stream_t *ds,unsigned char **start);
int ds_get_packet_pts(demux_stream_t *ds, unsigned char **start, double *pts);
int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start);
double ds_get_next_pts(demux_stream_t *ds);
int ds_parse(demux_stream_t *sh, uint8_t **buffer, int *len, double pts, off_t pos);
void ds_clear_parser(demux_stream_t *sh);
// This is defined here because demux_stream_t ins't defined in stream.h
stream_t* new_ds_stream(demux_stream_t *ds);
static inline int avi_stream_id(unsigned int id){
unsigned char a,b;
a = id - '0';
b = (id >> 8) - '0';
if(a>9 || b>9) return 100; // invalid ID
return a*10+b;
}
demuxer_t* demux_open(struct MPOpts *opts, stream_t *stream,int file_format,int aid,int vid,int sid,char* filename);
void demux_flush(demuxer_t *demuxer);
int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags);
demuxer_t* new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd);
// AVI demuxer params:
extern int index_mode; // -1=untouched 0=don't use index 1=use (geneate) index
extern char *index_file_save, *index_file_load;
extern int force_ni;
extern int pts_from_bps;
extern int extension_parsing;
int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param);
int demux_info_add_bstr(demuxer_t *demuxer, struct bstr opt, struct bstr param);
char* demux_info_get(demuxer_t *demuxer, const char *opt);
int demux_info_print(demuxer_t *demuxer);
int demux_control(demuxer_t *demuxer, int cmd, void *arg);
int demuxer_get_current_time(demuxer_t *demuxer);
double demuxer_get_time_length(demuxer_t *demuxer);
int demuxer_get_percent_pos(demuxer_t *demuxer);
int demuxer_switch_audio(demuxer_t *demuxer, int index);
int demuxer_switch_video(demuxer_t *demuxer, int index);
int demuxer_type_by_filename(char* filename);
void demuxer_help(void);
int get_demuxer_type_from_name(char *demuxer_name, int *force);
int demuxer_add_attachment(demuxer_t *demuxer, struct bstr name,
struct bstr type, struct bstr data);
int demuxer_add_chapter(demuxer_t *demuxer, struct bstr name,
uint64_t start, uint64_t end);
int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, double *seek_pts,
char **chapter_name);
/// Get current chapter index if available.
int demuxer_get_current_chapter(demuxer_t *demuxer);
/// Get chapter name by index if available.
char *demuxer_chapter_name(demuxer_t *demuxer, int chapter);
/// Get chapter display name by index.
char *demuxer_chapter_display_name(demuxer_t *demuxer, int chapter);
/// Get chapter start time and end time by index if available.
float demuxer_chapter_time(demuxer_t *demuxer, int chapter, float *end);
/// Get total chapter number.
int demuxer_chapter_count(demuxer_t *demuxer);
/// Get current angle index.
int demuxer_get_current_angle(demuxer_t *demuxer);
/// Set angle.
int demuxer_set_angle(demuxer_t *demuxer, int angle);
/// Get number of angles.
int demuxer_angles_count(demuxer_t *demuxer);
// get the index of a track
// lang is a comma-separated list
int demuxer_audio_track_by_lang(demuxer_t* demuxer, char* lang);
int demuxer_sub_track_by_lang(demuxer_t* demuxer, char* lang);
// find the default track
// for subtitles, it is the first track with default attribute
// for audio, additionally, the first track is selected if no track has default attribute set
int demuxer_default_audio_track(demuxer_t* d);
int demuxer_default_sub_track(demuxer_t* d);
#endif /* MPLAYER_DEMUXER_H */
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