mpv/libmpdemux/stream.h

265 lines
6.7 KiB
C

#ifndef __STREAM_H
#define __STREAM_H
#include "mp_msg.h"
#include <string.h>
#include <inttypes.h>
#include <sys/types.h>
#define STREAMTYPE_DUMMY -1 // for placeholders, when the actual reading is handled in the demuxer
#define STREAMTYPE_FILE 0 // read from seekable file
#define STREAMTYPE_VCD 1 // raw mode-2 CDROM reading, 2324 bytes/sector
#define STREAMTYPE_STREAM 2 // same as FILE but no seeking (for net/stdin)
#define STREAMTYPE_DVD 3 // libdvdread
#define STREAMTYPE_MEMORY 4 // read data from memory area
#define STREAMTYPE_PLAYLIST 6 // FIXME!!! same as STREAMTYPE_FILE now
#define STREAMTYPE_DS 8 // read from a demuxer stream
#define STREAMTYPE_DVDNAV 9 // we cannot safely "seek" in this...
#define STREAMTYPE_CDDA 10 // raw audio CD reader
#define STREAMTYPE_SMB 11 // smb:// url, using libsmbclient (samba)
#define STREAM_BUFFER_SIZE 2048
#define VCD_SECTOR_SIZE 2352
#define VCD_SECTOR_OFFS 24
#define VCD_SECTOR_DATA 2324
#ifdef STREAMING
#include "network.h"
#endif
int vcd_seek_to_track(int fd,int track);
void vcd_read_toc(int fd);
typedef struct {
int fd; // file descriptor, see man open(2)
int type; // see STREAMTYPE_*
unsigned int buf_pos,buf_len;
off_t pos,start_pos,end_pos;
int eof;
unsigned int cache_pid;
void* cache_data;
void* priv; // used for DVD, TV, RTSP etc
char* url; // strdup() of filename/url
#ifdef STREAMING
streaming_ctrl_t *streaming_ctrl;
#endif
unsigned char buffer[STREAM_BUFFER_SIZE>VCD_SECTOR_SIZE?STREAM_BUFFER_SIZE:VCD_SECTOR_SIZE];
} stream_t;
#ifdef USE_STREAM_CACHE
int stream_enable_cache(stream_t *stream,int size,int min,int prefill);
int cache_stream_fill_buffer(stream_t *s);
int cache_stream_seek_long(stream_t *s,off_t pos);
#else
// no cache, define wrappers:
#define cache_stream_fill_buffer(x) stream_fill_buffer(x)
#define cache_stream_seek_long(x,y) stream_seek_long(x,y)
#define stream_enable_cache(x,y,z,w) 1
#endif
inline static int stream_read_char(stream_t *s){
return (s->buf_pos<s->buf_len)?s->buffer[s->buf_pos++]:
(cache_stream_fill_buffer(s)?s->buffer[s->buf_pos++]:-256);
// if(s->buf_pos<s->buf_len) return s->buffer[s->buf_pos++];
// stream_fill_buffer(s);
// if(s->buf_pos<s->buf_len) return s->buffer[s->buf_pos++];
// return 0; // EOF
}
inline static unsigned int stream_read_word(stream_t *s){
int x,y;
x=stream_read_char(s);
y=stream_read_char(s);
return (x<<8)|y;
}
inline static unsigned int stream_read_dword(stream_t *s){
unsigned int y;
y=stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
return y;
}
#define stream_read_fourcc stream_read_dword_le
inline static unsigned int stream_read_word_le(stream_t *s){
int x,y;
x=stream_read_char(s);
y=stream_read_char(s);
return (y<<8)|x;
}
inline static unsigned int stream_read_dword_le(stream_t *s){
unsigned int y;
y=stream_read_char(s);
y|=stream_read_char(s)<<8;
y|=stream_read_char(s)<<16;
y|=stream_read_char(s)<<24;
return y;
}
inline static uint64_t stream_read_qword(stream_t *s){
uint64_t y;
y = stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
return y;
}
inline static unsigned int stream_read_int24(stream_t *s){
unsigned int y;
y = stream_read_char(s);
y=(y<<8)|stream_read_char(s);
y=(y<<8)|stream_read_char(s);
return y;
}
inline static int stream_read(stream_t *s,char* mem,int total){
int len=total;
while(len>0){
int x;
x=s->buf_len-s->buf_pos;
if(x==0){
if(!cache_stream_fill_buffer(s)) return total-len; // EOF
x=s->buf_len-s->buf_pos;
}
if(s->buf_pos>s->buf_len) mp_msg(MSGT_DEMUX, MSGL_WARN, "stream_read: WARNING! s->buf_pos>s->buf_len\n");
if(x>len) x=len;
memcpy(mem,&s->buffer[s->buf_pos],x);
s->buf_pos+=x; mem+=x; len-=x;
}
return total;
}
inline static int stream_eof(stream_t *s){
return s->eof;
}
inline static off_t stream_tell(stream_t *s){
return s->pos+s->buf_pos-s->buf_len;
}
inline static int stream_seek(stream_t *s,off_t pos){
mp_dbg(MSGT_DEMUX, MSGL_DBG3, "seek to 0x%qX\n",(long long)pos);
if(pos<s->pos){
off_t x=pos-(s->pos-s->buf_len);
if(x>=0){
s->buf_pos=x;
// putchar('*');fflush(stdout);
return 1;
}
}
return cache_stream_seek_long(s,pos);
}
inline static int stream_skip(stream_t *s,off_t len){
if(len<0 || (len>2*STREAM_BUFFER_SIZE && s->type!=STREAMTYPE_STREAM)){
// negative or big skip!
return stream_seek(s,stream_tell(s)+len);
}
while(len>0){
int x=s->buf_len-s->buf_pos;
if(x==0){
if(!cache_stream_fill_buffer(s)) return 0; // EOF
x=s->buf_len-s->buf_pos;
}
if(x>len) x=len;
//memcpy(mem,&s->buf[s->buf_pos],x);
s->buf_pos+=x; len-=x;
}
return 1;
}
void stream_reset(stream_t *s);
stream_t* new_stream(int fd,int type);
void free_stream(stream_t *s);
stream_t* new_memory_stream(unsigned char* data,int len);
stream_t* open_stream(char* filename,int vcd_track,int* file_format);
//#ifdef USE_DVDREAD
struct config;
extern int dvd_title;
extern int dvd_chapter;
extern int dvd_last_chapter;
extern int dvd_angle;
extern int dvd_nav;
int dvd_parse_chapter_range(struct config*, const char*);
//#endif
extern char * audio_stream;
#ifdef USE_DVDNAV
#include "dvdnav_stream.h"
#endif
#ifdef USE_DVDREAD
#ifdef USE_MPDVDKIT
#if (USE_MPDVDKIT == 2)
#include "../libmpdvdkit2/dvd_reader.h"
#include "../libmpdvdkit2/ifo_types.h"
#include "../libmpdvdkit2/ifo_read.h"
#include "../libmpdvdkit2/nav_read.h"
#else
#include "../libmpdvdkit/dvd_reader.h"
#include "../libmpdvdkit/ifo_types.h"
#include "../libmpdvdkit/ifo_read.h"
#include "../libmpdvdkit/nav_read.h"
#endif
#else
#include <dvdread/dvd_reader.h>
#include <dvdread/ifo_types.h>
#include <dvdread/ifo_read.h>
#include <dvdread/nav_read.h>
#endif
typedef struct {
int id; // 0 - 31 mpeg; 128 - 159 ac3; 160 - 191 pcm
int language;
int type;
int channels;
} stream_language_t;
typedef struct {
dvd_reader_t *dvd;
dvd_file_t *title;
ifo_handle_t *vmg_file;
tt_srpt_t *tt_srpt;
ifo_handle_t *vts_file;
vts_ptt_srpt_t *vts_ptt_srpt;
pgc_t *cur_pgc;
//
int cur_cell;
int last_cell;
int cur_pack;
int cell_last_pack;
// Navi:
int packs_left;
dsi_t dsi_pack;
int angle_seek;
// audio datas
int nr_of_channels;
stream_language_t audio_streams[32];
// subtitles
int nr_of_subtitles;
stream_language_t subtitles[32];
} dvd_priv_t;
int dvd_aid_from_lang(stream_t *stream, unsigned char* lang);
int dvd_sid_from_lang(stream_t *stream, unsigned char* lang);
#endif
#endif // __STREAM_H