mirror of https://github.com/mpv-player/mpv
373 lines
12 KiB
C
373 lines
12 KiB
C
#ifndef __DEMUXER_H
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#define __DEMUXER_H 1
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#ifdef USE_ASS
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#include "libass/ass_types.h"
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#endif
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#define MAX_PACKS 4096
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#ifdef HAVE_TV_BSDBT848
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#define MAX_PACK_BYTES 0x2000000
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#else
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#define MAX_PACK_BYTES 0x800000
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#endif
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#define DEMUXER_TYPE_UNKNOWN 0
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#define DEMUXER_TYPE_MPEG_ES 1
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#define DEMUXER_TYPE_MPEG_PS 2
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#define DEMUXER_TYPE_AVI 3
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#define DEMUXER_TYPE_AVI_NI 4
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#define DEMUXER_TYPE_AVI_NINI 5
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#define DEMUXER_TYPE_ASF 6
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#define DEMUXER_TYPE_MOV 7
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#define DEMUXER_TYPE_VIVO 8
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#define DEMUXER_TYPE_TV 9
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#define DEMUXER_TYPE_FLI 10
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#define DEMUXER_TYPE_REAL 11
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#define DEMUXER_TYPE_Y4M 12
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#define DEMUXER_TYPE_NUV 13
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#define DEMUXER_TYPE_FILM 14
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#define DEMUXER_TYPE_ROQ 15
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#define DEMUXER_TYPE_MF 16
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#define DEMUXER_TYPE_AUDIO 17
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#define DEMUXER_TYPE_OGG 18
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#define DEMUXER_TYPE_RAWAUDIO 20
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#define DEMUXER_TYPE_RTP 21
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#define DEMUXER_TYPE_RAWDV 22
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#define DEMUXER_TYPE_PVA 23
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#define DEMUXER_TYPE_SMJPEG 24
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#define DEMUXER_TYPE_XMMS 25
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#define DEMUXER_TYPE_RAWVIDEO 26
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#define DEMUXER_TYPE_MPEG4_ES 27
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#define DEMUXER_TYPE_GIF 28
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#define DEMUXER_TYPE_MPEG_TS 29
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#define DEMUXER_TYPE_H264_ES 30
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#define DEMUXER_TYPE_MATROSKA 31
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#define DEMUXER_TYPE_REALAUDIO 32
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#define DEMUXER_TYPE_MPEG_TY 33
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#define DEMUXER_TYPE_LMLM4 34
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#define DEMUXER_TYPE_LAVF 35
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#define DEMUXER_TYPE_NSV 36
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#define DEMUXER_TYPE_VQF 37
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#define DEMUXER_TYPE_AVS 38
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#define DEMUXER_TYPE_AAC 39
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#define DEMUXER_TYPE_MPC 40
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#define DEMUXER_TYPE_MPEG_PES 41
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#define DEMUXER_TYPE_MPEG_GXF 42
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// This should always match the higest demuxer type number.
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// Unless you want to disallow users to force the demuxer to some types
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#define DEMUXER_TYPE_MIN 0
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#define DEMUXER_TYPE_MAX 42
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#define DEMUXER_TYPE_DEMUXERS (1<<16)
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// A virtual demuxer type for the network code
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#define DEMUXER_TYPE_PLAYLIST (2<<16)
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#define MP_NOPTS_VALUE (-1LL<<63) //both int64_t and double should be able to represent this exactly
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// DEMUXER control commands/answers
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#define DEMUXER_CTRL_NOTIMPL -1
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#define DEMUXER_CTRL_DONTKNOW 0
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#define DEMUXER_CTRL_OK 1
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#define DEMUXER_CTRL_GUESS 2
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#define DEMUXER_CTRL_GET_TIME_LENGTH 10
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#define DEMUXER_CTRL_GET_PERCENT_POS 11
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#define DEMUXER_CTRL_SWITCH_AUDIO 12
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// Holds one packet/frame/whatever
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typedef struct demux_packet_st {
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int len;
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double pts;
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off_t pos; // position in index (AVI) or file (MPG)
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unsigned char* buffer;
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int flags; // keyframe, etc
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int refcount; //refcounter for the master packet, if 0, buffer can be free()d
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struct demux_packet_st* master; //pointer to the master packet if this one is a cloned one
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struct demux_packet_st* next;
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} demux_packet_t;
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typedef struct {
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int buffer_pos; // current buffer position
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int buffer_size; // current buffer size
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unsigned char* buffer; // current buffer, never free() it, always use free_demux_packet(buffer_ref);
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double pts; // current buffer's pts
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int pts_bytes; // number of bytes read after last pts stamp
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int eof; // end of demuxed stream? (true if all buffer empty)
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off_t pos; // position in the input stream (file)
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off_t dpos; // position in the demuxed stream
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int pack_no; // serial number of packet
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int flags; // flags of current packet (keyframe etc)
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//---------------
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int packs; // number of packets in buffer
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int bytes; // total bytes of packets in buffer
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demux_packet_t *first; // read to current buffer from here
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demux_packet_t *last; // append new packets from input stream to here
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demux_packet_t *current;// needed for refcounting of the buffer
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int id; // stream ID (for multiple audio/video streams)
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struct demuxer_st *demuxer; // parent demuxer structure (stream handler)
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// ---- asf -----
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demux_packet_t *asf_packet; // read asf fragments here
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int asf_seq;
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// ---- mov -----
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unsigned int ss_mul,ss_div;
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// ---- stream header ----
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void* sh;
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} demux_stream_t;
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typedef struct demuxer_info_st {
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char *name;
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char *author;
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char *encoder;
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char *comments;
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char *copyright;
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} demuxer_info_t;
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typedef struct {
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char type; // t = text, v = VobSub, a = SSA/ASS
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int has_palette; // If we have a valid palette
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unsigned int palette[16]; // for VobSubs
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int width, height; // for VobSubs
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int custom_colors;
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unsigned int colors[4];
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int forced_subs_only;
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#ifdef USE_ASS
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ass_track_t* ass_track; // for SSA/ASS streams (type == 'a')
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#endif
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} sh_sub_t;
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#define MAX_A_STREAMS 256
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#define MAX_V_STREAMS 256
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struct demuxer_st;
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extern int correct_pts;
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/**
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* Demuxer description structure
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*/
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typedef struct demuxers_desc_st {
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const char *info; ///< What is it (long name and/or description)
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const char *name; ///< Demuxer name, used with -demuxer switch
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const char *shortdesc; ///< Description printed at demuxer detection
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const char *author; ///< Demuxer author(s)
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const char *comment; ///< Comment, printed with -demuxer help
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int type; ///< DEMUXER_TYPE_xxx
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int safe_check; ///< If 1 detection is safe and fast, do it before file extension check
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/// Check if can demux the file, return DEMUXER_TYPE_xxx on success
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int (*check_file)(struct demuxer_st *demuxer); ///< Mandatory if safe_check == 1, else optional
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/// Get packets from file, return 0 on eof
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int (*fill_buffer)(struct demuxer_st *demuxer, demux_stream_t *ds); ///< Mandatory
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/// Open the demuxer, return demuxer on success, NULL on failure
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struct demuxer_st* (*open)(struct demuxer_st *demuxer); ///< Optional
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/// Close the demuxer
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void (*close)(struct demuxer_st *demuxer); ///< Optional
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// Seek
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void (*seek)(struct demuxer_st *demuxer, float rel_seek_secs, float audio_delay, int flags); ///< Optional
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// Control
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int (*control)(struct demuxer_st *demuxer, int cmd, void *arg); ///< Optional
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} demuxer_desc_t;
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typedef struct demuxer_st {
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demuxer_desc_t *desc; ///< Demuxer description structure
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off_t filepos; // input stream current pos.
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off_t movi_start;
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off_t movi_end;
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stream_t *stream;
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char *filename; ///< Needed by avs_check_file
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int synced; // stream synced (used by mpeg)
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int type; // demuxer type: mpeg PS, mpeg ES, avi, avi-ni, avi-nini, asf
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int file_format; // file format: mpeg/avi/asf
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int seekable; // flag
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//
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demux_stream_t *audio; // audio buffer/demuxer
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demux_stream_t *video; // video buffer/demuxer
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demux_stream_t *sub; // dvd subtitle buffer/demuxer
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// stream headers:
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void* a_streams[MAX_A_STREAMS]; // audio streams (sh_audio_t)
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void* v_streams[MAX_V_STREAMS]; // video sterams (sh_video_t)
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char s_streams[32]; // dvd subtitles (flag)
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void* priv; // fileformat-dependent data
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char** info;
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} demuxer_t;
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inline static demux_packet_t* new_demux_packet(int len){
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demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
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dp->len=len;
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dp->next=NULL;
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// still using 0 by default in case there is some code that uses 0 for both
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// unknown and a valid pts value
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dp->pts=correct_pts ? MP_NOPTS_VALUE : 0;
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dp->pos=0;
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dp->flags=0;
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dp->refcount=1;
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dp->master=NULL;
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dp->buffer=NULL;
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if (len > 0 && (dp->buffer = (unsigned char *)malloc(len + 8)))
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memset(dp->buffer + len, 0, 8);
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else
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dp->len = 0;
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return dp;
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}
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inline static void resize_demux_packet(demux_packet_t* dp, int len)
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{
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if(len > 0)
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{
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dp->buffer=(unsigned char *)realloc(dp->buffer,len+8);
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}
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else
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{
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if(dp->buffer) free(dp->buffer);
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dp->buffer=NULL;
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}
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dp->len=len;
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if (dp->buffer)
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memset(dp->buffer + len, 0, 8);
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else
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dp->len = 0;
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}
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inline static demux_packet_t* clone_demux_packet(demux_packet_t* pack){
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demux_packet_t* dp=(demux_packet_t*)malloc(sizeof(demux_packet_t));
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while(pack->master) pack=pack->master; // find the master
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memcpy(dp,pack,sizeof(demux_packet_t));
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dp->next=NULL;
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dp->refcount=0;
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dp->master=pack;
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pack->refcount++;
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return dp;
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}
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inline static void free_demux_packet(demux_packet_t* dp){
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if (dp->master==NULL){ //dp is a master packet
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dp->refcount--;
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if (dp->refcount==0){
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if (dp->buffer) free(dp->buffer);
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free(dp);
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}
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return;
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}
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// dp is a clone:
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free_demux_packet(dp->master);
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free(dp);
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}
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#ifndef SIZE_MAX
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#define SIZE_MAX ((size_t)-1)
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#endif
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static void *realloc_struct(void *ptr, size_t nmemb, size_t size) {
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if (nmemb > SIZE_MAX / size) {
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free(ptr);
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return NULL;
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}
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return realloc(ptr, nmemb * size);
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}
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demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id);
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demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id,char *filename);
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void free_demuxer_stream(demux_stream_t *ds);
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void free_demuxer(demuxer_t *demuxer);
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void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp);
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void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len, double pts, off_t pos, int flags);
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int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds);
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int ds_fill_buffer(demux_stream_t *ds);
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inline static off_t ds_tell(demux_stream_t *ds){
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return (ds->dpos-ds->buffer_size)+ds->buffer_pos;
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}
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inline static int ds_tell_pts(demux_stream_t *ds){
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return (ds->pts_bytes-ds->buffer_size)+ds->buffer_pos;
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}
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int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len);
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int demux_read_data_pack(demux_stream_t *ds,unsigned char* mem,int len);
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int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
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int *read, uint32_t pattern);
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#define demux_peekc(ds) (\
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(likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos] \
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:((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos] ) )
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#if 1
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#define demux_getc(ds) (\
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(likely(ds->buffer_pos<ds->buffer_size)) ? ds->buffer[ds->buffer_pos++] \
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:((unlikely(!ds_fill_buffer(ds)))? (-1) : ds->buffer[ds->buffer_pos++] ) )
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#else
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inline static int demux_getc(demux_stream_t *ds){
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if(ds->buffer_pos>=ds->buffer_size){
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if(!ds_fill_buffer(ds)){
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// printf("DEMUX_GETC: EOF reached!\n");
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return -1; // EOF
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}
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}
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// printf("[%02X]",ds->buffer[ds->buffer_pos]);
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return ds->buffer[ds->buffer_pos++];
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}
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#endif
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void ds_free_packs(demux_stream_t *ds);
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int ds_get_packet(demux_stream_t *ds,unsigned char **start);
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int ds_get_packet_pts(demux_stream_t *ds, unsigned char **start, double *pts);
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int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start);
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double ds_get_next_pts(demux_stream_t *ds);
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// This is defined here because demux_stream_t ins't defined in stream.h
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stream_t* new_ds_stream(demux_stream_t *ds);
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static inline int avi_stream_id(unsigned int id){
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unsigned char *p=(unsigned char *)&id;
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unsigned char a,b;
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#if WORDS_BIGENDIAN
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a=p[3]-'0'; b=p[2]-'0';
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#else
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a=p[0]-'0'; b=p[1]-'0';
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#endif
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if(a>9 || b>9) return 100; // invalid ID
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return a*10+b;
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}
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demuxer_t* demux_open(stream_t *stream,int file_format,int aid,int vid,int sid,char* filename);
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int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags);
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demuxer_t* new_demuxers_demuxer(demuxer_t* vd, demuxer_t* ad, demuxer_t* sd);
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// AVI demuxer params:
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extern int index_mode; // -1=untouched 0=don't use index 1=use (geneate) index
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extern char *index_file_save, *index_file_load;
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extern int force_ni;
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extern int pts_from_bps;
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extern int extension_parsing;
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int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param);
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char* demux_info_get(demuxer_t *demuxer, char *opt);
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int demux_info_print(demuxer_t *demuxer);
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int demux_control(demuxer_t *demuxer, int cmd, void *arg);
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#ifdef HAVE_OGGVORBIS
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/* Found in demux_ogg.c */
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int demux_ogg_num_subs(demuxer_t *demuxer);
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int demux_ogg_sub_id(demuxer_t *demuxer, int index);
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char *demux_ogg_sub_lang(demuxer_t *demuxer, int index);
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#endif
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#endif
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extern double demuxer_get_time_length(demuxer_t *demuxer);
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extern int demuxer_get_percent_pos(demuxer_t *demuxer);
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extern int demuxer_switch_audio(demuxer_t *demuxer, int index);
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extern int demuxer_type_by_filename(char* filename);
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extern void demuxer_help(void);
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extern int get_demuxer_type_from_name(char *demuxer_name, int *force);
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