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mpv/libmpdemux/demuxer.c

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//=================== DEMUXER v2.5 =========================
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "m_config.h"
#include "libvo/fastmemcpy.h"
#include "stream.h"
#include "demuxer.h"
#include "stheader.h"
#include "mf.h"
#include "libaf/af_format.h"
extern void resync_audio_stream(sh_audio_t *sh_audio);
// Demuxer list
extern demuxer_desc_t demuxer_desc_rawaudio;
extern demuxer_desc_t demuxer_desc_rawvideo;
extern demuxer_desc_t demuxer_desc_tv;
extern demuxer_desc_t demuxer_desc_mf;
extern demuxer_desc_t demuxer_desc_avi;
extern demuxer_desc_t demuxer_desc_y4m;
extern demuxer_desc_t demuxer_desc_asf;
extern demuxer_desc_t demuxer_desc_nuv;
extern demuxer_desc_t demuxer_desc_real;
extern demuxer_desc_t demuxer_desc_smjpeg;
extern demuxer_desc_t demuxer_desc_matroska;
extern demuxer_desc_t demuxer_desc_realaudio;
extern demuxer_desc_t demuxer_desc_vqf;
extern demuxer_desc_t demuxer_desc_mov;
extern demuxer_desc_t demuxer_desc_vivo;
extern demuxer_desc_t demuxer_desc_fli;
extern demuxer_desc_t demuxer_desc_film;
extern demuxer_desc_t demuxer_desc_roq;
extern demuxer_desc_t demuxer_desc_gif;
extern demuxer_desc_t demuxer_desc_ogg;
extern demuxer_desc_t demuxer_desc_avs;
extern demuxer_desc_t demuxer_desc_pva;
extern demuxer_desc_t demuxer_desc_nsv;
extern demuxer_desc_t demuxer_desc_mpeg_ts;
extern demuxer_desc_t demuxer_desc_lmlm4;
extern demuxer_desc_t demuxer_desc_mpeg_ps;
extern demuxer_desc_t demuxer_desc_mpeg_pes;
extern demuxer_desc_t demuxer_desc_mpeg_es;
extern demuxer_desc_t demuxer_desc_mpeg_gxf;
extern demuxer_desc_t demuxer_desc_mpeg4_es;
extern demuxer_desc_t demuxer_desc_h264_es;
extern demuxer_desc_t demuxer_desc_rawdv;
extern demuxer_desc_t demuxer_desc_mpc;
extern demuxer_desc_t demuxer_desc_audio;
extern demuxer_desc_t demuxer_desc_xmms;
extern demuxer_desc_t demuxer_desc_mpeg_ty;
extern demuxer_desc_t demuxer_desc_rtp;
extern demuxer_desc_t demuxer_desc_lavf;
extern demuxer_desc_t demuxer_desc_aac;
extern demuxer_desc_t demuxer_desc_nut;
demuxer_desc_t* demuxer_list[] = {
&demuxer_desc_rawaudio,
&demuxer_desc_rawvideo,
#ifdef USE_TV
&demuxer_desc_tv,
#endif
&demuxer_desc_mf,
&demuxer_desc_avi,
&demuxer_desc_y4m,
&demuxer_desc_asf,
&demuxer_desc_nsv,
&demuxer_desc_nuv,
&demuxer_desc_real,
&demuxer_desc_smjpeg,
&demuxer_desc_matroska,
&demuxer_desc_realaudio,
&demuxer_desc_vqf,
&demuxer_desc_mov,
&demuxer_desc_vivo,
&demuxer_desc_fli,
&demuxer_desc_film,
&demuxer_desc_roq,
#ifdef HAVE_GIF
&demuxer_desc_gif,
#endif
#ifdef HAVE_OGGVORBIS
&demuxer_desc_ogg,
#endif
#ifdef USE_WIN32DLL
&demuxer_desc_avs,
#endif
&demuxer_desc_pva,
&demuxer_desc_mpeg_ts,
&demuxer_desc_lmlm4,
&demuxer_desc_mpeg_ps,
&demuxer_desc_mpeg_pes,
&demuxer_desc_mpeg_es,
&demuxer_desc_mpeg_gxf,
&demuxer_desc_mpeg4_es,
&demuxer_desc_h264_es,
#ifdef MUSEPACK
&demuxer_desc_mpc,
#endif
&demuxer_desc_audio,
&demuxer_desc_mpeg_ty,
#ifdef STREAMING_LIVE555
&demuxer_desc_rtp,
#endif
#if defined(USE_LIBAVFORMAT) || defined(USE_LIBAVFORMAT_SO)
&demuxer_desc_lavf,
#endif
#ifdef HAVE_LIBDV095
&demuxer_desc_rawdv,
#endif
&demuxer_desc_aac,
#ifdef HAVE_LIBNUT
&demuxer_desc_nut,
#endif
#ifdef HAVE_XMMS
&demuxer_desc_xmms,
#endif
NULL
};
void free_demuxer_stream(demux_stream_t *ds){
ds_free_packs(ds);
free(ds);
}
demux_stream_t* new_demuxer_stream(struct demuxer_st *demuxer,int id){
demux_stream_t* ds=malloc(sizeof(demux_stream_t));
ds->buffer_pos=ds->buffer_size=0;
ds->buffer=NULL;
ds->pts=0;
ds->pts_bytes=0;
ds->eof=0;
ds->pos=0;
ds->dpos=0;
ds->pack_no=0;
//---------------
ds->packs=0;
ds->bytes=0;
ds->first=ds->last=ds->current=NULL;
ds->id=id;
ds->demuxer=demuxer;
//----------------
ds->asf_seq=-1;
ds->asf_packet=NULL;
//----------------
ds->ss_mul=ds->ss_div=0;
//----------------
ds->sh=NULL;
return ds;
}
/**
* Get demuxer description structure for a given demuxer type
*
* @param file_format type of the demuxer
* @return structure for the demuxer, NULL if not found
*/
static demuxer_desc_t* get_demuxer_desc_from_type(int file_format)
{
int i;
for (i = 0; demuxer_list[i]; i++)
if (file_format == demuxer_list[i]->type)
return demuxer_list[i];
return NULL;
}
demuxer_t* new_demuxer(stream_t *stream,int type,int a_id,int v_id,int s_id,char *filename){
demuxer_t *d=malloc(sizeof(demuxer_t));
memset(d,0,sizeof(demuxer_t));
d->stream=stream;
d->stream_pts = MP_NOPTS_VALUE;
d->movi_start=stream->start_pos;
d->movi_end=stream->end_pos;
d->seekable=1;
d->synced=0;
d->filepos=0;
d->audio=new_demuxer_stream(d,a_id);
d->video=new_demuxer_stream(d,v_id);
d->sub=new_demuxer_stream(d,s_id);
d->type=type;
if(type)
if (!(d->desc = get_demuxer_desc_from_type(type)))
mp_msg(MSGT_DEMUXER,MSGL_ERR,"BUG! Invalid demuxer type in new_demuxer(), big troubles ahead.");
if(filename) // Filename hack for avs_check_file
d->filename=strdup(filename);
stream_reset(stream);
stream_seek(stream,stream->start_pos);
return d;
}
sh_sub_t *new_sh_sub_sid(demuxer_t *demuxer, int id, int sid) {
if (id > MAX_S_STREAMS - 1 || id < 0) {
mp_msg(MSGT_DEMUXER,MSGL_WARN,"Requested sub stream id overflow (%d > %d)\n",
id, MAX_S_STREAMS);
return NULL;
}
if (demuxer->s_streams[id])
mp_msg(MSGT_DEMUXER, MSGL_WARN, "Sub stream %i redefined\n", id);
else {
sh_sub_t *sh = calloc(1, sizeof(sh_sub_t));
demuxer->s_streams[id] = sh;
sh->sid = sid;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SUBTITLE_ID=%d\n", sid);
}
return demuxer->s_streams[id];
}
sh_audio_t* new_sh_audio_aid(demuxer_t *demuxer,int id,int aid){
if(id > MAX_A_STREAMS-1 || id < 0)
{
mp_msg(MSGT_DEMUXER,MSGL_WARN,"Requested audio stream id overflow (%d > %d)\n",
id, MAX_A_STREAMS);
return NULL;
}
if(demuxer->a_streams[id]){
mp_msg(MSGT_DEMUXER,MSGL_WARN,MSGTR_AudioStreamRedefined,id);
} else {
sh_audio_t *sh;
mp_msg(MSGT_DEMUXER,MSGL_V,MSGTR_FoundAudioStream,id);
demuxer->a_streams[id]=calloc(1, sizeof(sh_audio_t));
sh = demuxer->a_streams[id];
// set some defaults
sh->samplesize=2;
sh->sample_format=AF_FORMAT_S16_NE;
sh->audio_out_minsize=8192;/* default size, maybe not enough for Win32/ACM*/
sh->pts=MP_NOPTS_VALUE;
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AUDIO_ID=%d\n", aid);
}
((sh_audio_t *)demuxer->a_streams[id])->aid = aid;
return demuxer->a_streams[id];
}
void free_sh_audio(demuxer_t *demuxer, int id) {
sh_audio_t *sh = demuxer->a_streams[id];
demuxer->a_streams[id] = NULL;
mp_msg(MSGT_DEMUXER,MSGL_DBG2,"DEMUXER: freeing sh_audio at %p\n",sh);
if(sh->wf) free(sh->wf);
free(sh);
}
sh_video_t* new_sh_video_vid(demuxer_t *demuxer,int id,int vid){
if(id > MAX_V_STREAMS-1 || id < 0)
{
mp_msg(MSGT_DEMUXER,MSGL_WARN,"Requested video stream id overflow (%d > %d)\n",
id, MAX_V_STREAMS);
return NULL;
}
if(demuxer->v_streams[id]){
mp_msg(MSGT_DEMUXER,MSGL_WARN,MSGTR_VideoStreamRedefined,id);
} else {
mp_msg(MSGT_DEMUXER,MSGL_V,MSGTR_FoundVideoStream,id);
demuxer->v_streams[id]=calloc(1, sizeof(sh_video_t));
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_ID=%d\n", vid);
}
((sh_video_t *)demuxer->v_streams[id])->vid = vid;
return demuxer->v_streams[id];
}
void free_sh_video(sh_video_t* sh){
mp_msg(MSGT_DEMUXER,MSGL_DBG2,"DEMUXER: freeing sh_video at %p\n",sh);
if(sh->bih) free(sh->bih);
free(sh);
}
void free_demuxer(demuxer_t *demuxer){
int i;
mp_msg(MSGT_DEMUXER,MSGL_DBG2,"DEMUXER: freeing demuxer at %p\n",demuxer);
if(demuxer->desc->close)
demuxer->desc->close(demuxer);
// Very ugly hack to make it behave like old implementation
if (demuxer->desc->type == DEMUXER_TYPE_DEMUXERS)
goto skip_streamfree;
// free streams:
for(i = 0; i < MAX_A_STREAMS; i++)
if(demuxer->a_streams[i]) free_sh_audio(demuxer, i);
for(i = 0; i < MAX_V_STREAMS; i++)
if(demuxer->v_streams[i]) free_sh_video(demuxer->v_streams[i]);
// free demuxers:
free_demuxer_stream(demuxer->audio);
free_demuxer_stream(demuxer->video);
free_demuxer_stream(demuxer->sub);
skip_streamfree:
if(demuxer->info) {
for(i=0;demuxer->info[i] != NULL; i++)
free(demuxer->info[i]);
free(demuxer->info);
}
if(demuxer->filename)
free(demuxer->filename);
if (demuxer->chapters) {
for (i=0; i<demuxer->num_chapters; i++)
if (demuxer->chapters[i].name)
free(demuxer->chapters[i].name);
free(demuxer->chapters);
}
free(demuxer);
}
void ds_add_packet(demux_stream_t *ds,demux_packet_t* dp){
// demux_packet_t* dp=new_demux_packet(len);
// stream_read(stream,dp->buffer,len);
// dp->pts=pts; //(float)pts/90000.0f;
// dp->pos=pos;
// append packet to DS stream:
++ds->packs;
ds->bytes+=dp->len;
if(ds->last){
// next packet in stream
ds->last->next=dp;
ds->last=dp;
} else {
// first packet in stream
ds->first=ds->last=dp;
}
mp_dbg(MSGT_DEMUXER,MSGL_DBG2,"DEMUX: Append packet to %s, len=%d pts=%5.3f pos=%u [packs: A=%d V=%d]\n",
(ds==ds->demuxer->audio)?"d_audio":"d_video",
dp->len,dp->pts,(unsigned int)dp->pos,ds->demuxer->audio->packs,ds->demuxer->video->packs);
}
void ds_read_packet(demux_stream_t *ds, stream_t *stream, int len, double pts, off_t pos, int flags) {
demux_packet_t* dp=new_demux_packet(len);
len = stream_read(stream,dp->buffer,len);
resize_demux_packet(dp, len);
dp->pts=pts; //(float)pts/90000.0f;
dp->pos=pos;
dp->flags=flags;
// append packet to DS stream:
ds_add_packet(ds,dp);
}
// return value:
// 0 = EOF or no stream found or invalid type
// 1 = successfully read a packet
int demux_fill_buffer(demuxer_t *demux,demux_stream_t *ds){
// Note: parameter 'ds' can be NULL!
// printf("demux->type=%d\n",demux->type);
return demux->desc->fill_buffer(demux, ds);
}
// return value:
// 0 = EOF
// 1 = succesfull
int ds_fill_buffer(demux_stream_t *ds){
demuxer_t *demux=ds->demuxer;
if(ds->current) free_demux_packet(ds->current);
if( mp_msg_test(MSGT_DEMUXER,MSGL_DBG3) ){
if(ds==demux->audio) mp_dbg(MSGT_DEMUXER,MSGL_DBG3,"ds_fill_buffer(d_audio) called\n");else
if(ds==demux->video) mp_dbg(MSGT_DEMUXER,MSGL_DBG3,"ds_fill_buffer(d_video) called\n");else
if(ds==demux->sub) mp_dbg(MSGT_DEMUXER,MSGL_DBG3,"ds_fill_buffer(d_sub) called\n");else
mp_dbg(MSGT_DEMUXER,MSGL_DBG3,"ds_fill_buffer(unknown 0x%X) called\n",(unsigned int)ds);
}
while(1){
if(ds->packs){
demux_packet_t *p=ds->first;
// copy useful data:
ds->buffer=p->buffer;
ds->buffer_pos=0;
ds->buffer_size=p->len;
ds->pos=p->pos;
ds->dpos+=p->len; // !!!
++ds->pack_no;
if (p->pts != (correct_pts ? MP_NOPTS_VALUE : 0)) {
ds->pts=p->pts;
ds->pts_bytes=0;
}
ds->pts_bytes+=p->len; // !!!
if(p->stream_pts != MP_NOPTS_VALUE) demux->stream_pts=p->stream_pts;
ds->flags=p->flags;
// unlink packet:
ds->bytes-=p->len;
ds->current=p;
ds->first=p->next;
if(!ds->first) ds->last=NULL;
--ds->packs;
return 1; //ds->buffer_size;
}
if(demux->audio->packs>=MAX_PACKS || demux->audio->bytes>=MAX_PACK_BYTES){
mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_TooManyAudioInBuffer,demux->audio->packs,demux->audio->bytes);
mp_msg(MSGT_DEMUXER,MSGL_HINT,MSGTR_MaybeNI);
break;
}
if(demux->video->packs>=MAX_PACKS || demux->video->bytes>=MAX_PACK_BYTES){
mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_TooManyVideoInBuffer,demux->video->packs,demux->video->bytes);
mp_msg(MSGT_DEMUXER,MSGL_HINT,MSGTR_MaybeNI);
break;
}
if(!demux_fill_buffer(demux,ds)){
mp_dbg(MSGT_DEMUXER,MSGL_DBG2,"ds_fill_buffer()->demux_fill_buffer() failed\n");
break; // EOF
}
}
ds->buffer_pos=ds->buffer_size=0;
ds->buffer=NULL;
ds->current=NULL;
mp_msg(MSGT_DEMUXER,MSGL_V,"ds_fill_buffer: EOF reached (stream: %s) \n",ds==demux->audio?"audio":"video");
ds->eof=1;
return 0;
}
int demux_read_data(demux_stream_t *ds,unsigned char* mem,int len){
int x;
int bytes=0;
while(len>0){
x=ds->buffer_size-ds->buffer_pos;
if(x==0){
if(!ds_fill_buffer(ds)) return bytes;
} else {
if(x>len) x=len;
if(mem) memcpy(mem+bytes,&ds->buffer[ds->buffer_pos],x);
bytes+=x;len-=x;ds->buffer_pos+=x;
}
}
return bytes;
}
int demux_read_data_pack(demux_stream_t *ds,unsigned char* mem,int len){
int x;
int bytes=0;
while(len>0){
x=ds->buffer_size-ds->buffer_pos;
if(x==0){
if(!ds_fill_buffer(ds)) return bytes;
} else {
if(x>len) x=len;
if(mem) memcpy(mem+bytes,&ds->buffer[ds->buffer_pos],x);
bytes+=x;len-=x;ds->buffer_pos+=x;
return bytes; // stop at end of package! (for correct timestamping)
}
}
return bytes;
}
/**
* \brief read data until the given 3-byte pattern is encountered, up to maxlen
* \param mem memory to read data into, may be NULL to discard data
* \param maxlen maximum number of bytes to read
* \param read number of bytes actually read
* \param pattern pattern to search for (lowest 8 bits are ignored)
* \return whether pattern was found
*/
int demux_pattern_3(demux_stream_t *ds, unsigned char *mem, int maxlen,
int *read, uint32_t pattern) {
register uint32_t head = 0xffffff00;
register uint32_t pat = pattern & 0xffffff00;
int total_len = 0;
do {
register unsigned char *ds_buf = &ds->buffer[ds->buffer_size];
int len = ds->buffer_size - ds->buffer_pos;
register long pos = -len;
if (unlikely(pos >= 0)) { // buffer is empty
ds_fill_buffer(ds);
continue;
}
do {
head |= ds_buf[pos];
head <<= 8;
} while (++pos && head != pat);
len += pos;
if (total_len + len > maxlen)
len = maxlen - total_len;
len = demux_read_data(ds, mem ? &mem[total_len] : NULL, len);
total_len += len;
} while ((head != pat || total_len < 3) && total_len < maxlen && !ds->eof);
if (read)
*read = total_len;
return total_len >= 3 && head == pat;
}
void ds_free_packs(demux_stream_t *ds){
demux_packet_t *dp=ds->first;
while(dp){
demux_packet_t *dn=dp->next;
free_demux_packet(dp);
dp=dn;
}
if(ds->asf_packet){
// free unfinished .asf fragments:
free(ds->asf_packet->buffer);
free(ds->asf_packet);
ds->asf_packet=NULL;
}
ds->first=ds->last=NULL;
ds->packs=0; // !!!!!
ds->bytes=0;
if(ds->current) free_demux_packet(ds->current);
ds->current=NULL;
ds->buffer=NULL;
ds->buffer_pos=ds->buffer_size;
ds->pts=0; ds->pts_bytes=0;
}
int ds_get_packet(demux_stream_t *ds,unsigned char **start){
while(1){
int len;
if(ds->buffer_pos>=ds->buffer_size){
if(!ds_fill_buffer(ds)){
// EOF
*start = NULL;
return -1;
}
}
len=ds->buffer_size-ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos+=len;
return len;
}
}
int ds_get_packet_pts(demux_stream_t *ds,unsigned char **start, double *pts)
{
int len;
*pts = MP_NOPTS_VALUE;
if(ds->buffer_pos>=ds->buffer_size){
if (!ds_fill_buffer(ds)) {
// EOF
*start = NULL;
return -1;
}
}
// Should use MP_NOPTS_VALUE for "unknown pts" in the packets too
// Return pts unless this read starts from the middle of a packet
if (!ds->buffer_pos && (correct_pts || ds->current->pts))
*pts = ds->current->pts;
len=ds->buffer_size-ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos+=len;
return len;
}
int ds_get_packet_sub(demux_stream_t *ds,unsigned char **start){
while(1){
int len;
if(ds->buffer_pos>=ds->buffer_size){
*start = NULL;
if(!ds->packs) return -1; // no sub
if(!ds_fill_buffer(ds)) return -1; // EOF
}
len=ds->buffer_size-ds->buffer_pos;
*start = &ds->buffer[ds->buffer_pos];
ds->buffer_pos+=len;
return len;
}
}
double ds_get_next_pts(demux_stream_t *ds)
{
demuxer_t* demux = ds->demuxer;
while(!ds->first) {
if(demux->audio->packs>=MAX_PACKS || demux->audio->bytes>=MAX_PACK_BYTES){
mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_TooManyAudioInBuffer,demux->audio->packs,demux->audio->bytes);
mp_msg(MSGT_DEMUXER,MSGL_HINT,MSGTR_MaybeNI);
return MP_NOPTS_VALUE;
}
if(demux->video->packs>=MAX_PACKS || demux->video->bytes>=MAX_PACK_BYTES){
mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_TooManyVideoInBuffer,demux->video->packs,demux->video->bytes);
mp_msg(MSGT_DEMUXER,MSGL_HINT,MSGTR_MaybeNI);
return MP_NOPTS_VALUE;
}
if(!demux_fill_buffer(demux,ds))
return MP_NOPTS_VALUE;
}
return ds->first->pts;
}
// ====================================================================
// commandline options, flags:
extern int force_ni;
extern int pts_from_bps;
//extern int audio_id;
//extern int video_id;
//extern int dvdsub_id;
void demuxer_help(void)
{
int i;
mp_msg(MSGT_DEMUXER, MSGL_INFO, "Available demuxers:\n");
mp_msg(MSGT_DEMUXER, MSGL_INFO, " demuxer: type info: (comment)\n");
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_DEMUXERS\n");
for (i = 0; demuxer_list[i]; i++) {
if (demuxer_list[i]->type > DEMUXER_TYPE_MAX) // Don't display special demuxers
continue;
if (demuxer_list[i]->comment && strlen(demuxer_list[i]->comment))
mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s %2d %s (%s)\n",
demuxer_list[i]->name, demuxer_list[i]->type, demuxer_list[i]->info, demuxer_list[i]->comment);
else
mp_msg(MSGT_DEMUXER, MSGL_INFO, "%10s %2d %s\n",
demuxer_list[i]->name, demuxer_list[i]->type, demuxer_list[i]->info);
}
}
/**
* Get demuxer type for a given demuxer name
*
* @param demuxer_name string with demuxer name of demuxer number
* @param force will be set if demuxer should be forced.
* May be NULL.
* @return DEMUXER_TYPE_xxx, -1 if error or not found
*/
int get_demuxer_type_from_name(char *demuxer_name, int *force)
{
int i;
long type_int;
char *endptr;
if (!demuxer_name || !demuxer_name[0])
return DEMUXER_TYPE_UNKNOWN;
if (force) *force = demuxer_name[0] == '+';
if (demuxer_name[0] == '+')
demuxer_name = &demuxer_name[1];
for (i = 0; demuxer_list[i]; i++) {
if (demuxer_list[i]->type > DEMUXER_TYPE_MAX) // Can't select special demuxers from commandline
continue;
if (strcmp(demuxer_name, demuxer_list[i]->name) == 0)
return demuxer_list[i]->type;
}
// No match found, try to parse name as an integer (demuxer number)
type_int = strtol(demuxer_name, &endptr, 0);
if (*endptr) // Conversion failed
return -1;
if ((type_int > 0) && (type_int <= DEMUXER_TYPE_MAX))
return (int)type_int;
return -1;
}
int extension_parsing=1; // 0=off 1=mixed (used only for unstable formats)
int correct_pts=0;
/*
NOTE : Several demuxers may be opened at the same time so
demuxers should NEVER rely on an external var to enable them
self. If a demuxer can't do any autodection it should only use
file_format. The user can explictly set file_format with the -demuxer
option so there is really no need for another extra var.
For conivence an option can be added to set file_format directly
to the right type (ex: rawaudio,rawvideo).
Also the stream can override the file_format so a demuxer wich rely
on a special stream type can set file_format at the stream level
(ex: tv,mf).
*/
static demuxer_t* demux_open_stream(stream_t *stream, int file_format,
int force, int audio_id, int video_id, int dvdsub_id,
char* filename) {
//int file_format=(*file_format_ptr);
demuxer_t *demuxer=NULL;
sh_video_t *sh_video=NULL;
demuxer_desc_t *demuxer_desc;
int fformat;
int i;
//printf("demux_open(%p,%d,%d,%d,%d) \n",stream,file_format,audio_id,video_id,dvdsub_id);
// If somebody requested a demuxer check it
if (file_format) {
if ((demuxer_desc = get_demuxer_desc_from_type(file_format))) {
demuxer = new_demuxer(stream,demuxer_desc->type,audio_id,video_id,dvdsub_id,filename);
if (demuxer_desc->check_file)
fformat = demuxer_desc->check_file(demuxer);
if (force || !demuxer_desc->check_file)
fformat = demuxer_desc->type;
if (fformat != 0) {
if (fformat == demuxer_desc->type) {
demuxer_t *demux2 = demuxer;
// Move messages to demuxer detection code?
mp_msg(MSGT_DEMUXER, MSGL_INFO, MSGTR_Detected_XXX_FileFormat, demuxer_desc->shortdesc);
file_format = demuxer_desc->type = fformat;
if (!demuxer->desc->open || (demux2 = demuxer->desc->open(demuxer))) {
demuxer = demux2;
goto dmx_open;
}
} else {
// Format changed after check, recurse
free_demuxer(demuxer);
return demux_open_stream(stream, fformat, force,
audio_id, video_id, dvdsub_id, filename);
}
}
// Check failed for forced demuxer, quit
free_demuxer(demuxer);
return NULL;
}
}
// Test demuxers with safe file checks
for (i = 0; (demuxer_desc = demuxer_list[i]); i++) {
if (demuxer_desc->safe_check) {
demuxer = new_demuxer(stream,demuxer_desc->type,audio_id,video_id,dvdsub_id,filename);
if ((fformat = demuxer_desc->check_file(demuxer)) != 0) {
if (fformat == demuxer_desc->type) {
demuxer_t *demux2 = demuxer;
mp_msg(MSGT_DEMUXER, MSGL_INFO, MSGTR_Detected_XXX_FileFormat, demuxer_desc->shortdesc);
file_format = fformat;
if (!demuxer->desc->open || (demux2 = demuxer->desc->open(demuxer))) {
demuxer = demux2;
goto dmx_open;
}
} else {
if (fformat == DEMUXER_TYPE_PLAYLIST)
return demuxer; // handled in mplayer.c
// Format changed after check, recurse
free_demuxer(demuxer);
demuxer=demux_open_stream(stream, fformat, force,
audio_id, video_id, dvdsub_id, filename);
if(demuxer) return demuxer; // done!
file_format = DEMUXER_TYPE_UNKNOWN;
}
}
free_demuxer(demuxer);
demuxer = NULL;
}
}
// If no forced demuxer perform file extension based detection
// Ok. We're over the stable detectable fileformats, the next ones are a bit
// fuzzy. So by default (extension_parsing==1) try extension-based detection
// first:
if(file_format==DEMUXER_TYPE_UNKNOWN && filename && extension_parsing==1){
file_format=demuxer_type_by_filename(filename);
if(file_format!=DEMUXER_TYPE_UNKNOWN){
// we like recursion :)
demuxer=demux_open_stream(stream, file_format, force,
audio_id, video_id, dvdsub_id, filename);
if(demuxer) return demuxer; // done!
file_format=DEMUXER_TYPE_UNKNOWN; // continue fuzzy guessing...
mp_msg(MSGT_DEMUXER,MSGL_V,"demuxer: continue fuzzy content-based format guessing...\n");
}
}
// Try detection for all other demuxers
for (i = 0; (demuxer_desc = demuxer_list[i]); i++) {
if (!demuxer_desc->safe_check && demuxer_desc->check_file) {
demuxer = new_demuxer(stream,demuxer_desc->type,audio_id,video_id,dvdsub_id,filename);
if ((fformat = demuxer_desc->check_file(demuxer)) != 0) {
if (fformat == demuxer_desc->type) {
demuxer_t *demux2 = demuxer;
mp_msg(MSGT_DEMUXER, MSGL_INFO, MSGTR_Detected_XXX_FileFormat, demuxer_desc->shortdesc);
file_format = fformat;
if (!demuxer->desc->open || (demux2 = demuxer->desc->open(demuxer))) {
demuxer = demux2;
goto dmx_open;
}
} else {
if (fformat == DEMUXER_TYPE_PLAYLIST)
return demuxer; // handled in mplayer.c
// Format changed after check, recurse
free_demuxer(demuxer);
demuxer=demux_open_stream(stream, fformat, force,
audio_id, video_id, dvdsub_id, filename);
if(demuxer) return demuxer; // done!
file_format = DEMUXER_TYPE_UNKNOWN;
}
}
free_demuxer(demuxer);
demuxer = NULL;
}
}
return NULL;
//====== File format recognized, set up these for compatibility: =========
dmx_open:
demuxer->file_format=file_format;
if ((sh_video=demuxer->video->sh) && sh_video->bih){
int biComp=le2me_32(sh_video->bih->biCompression);
mp_msg(MSGT_DEMUX,MSGL_INFO,"VIDEO: [%.4s] %dx%d %dbpp %5.3f fps %5.1f kbps (%4.1f kbyte/s)\n",
(char *)&biComp,
sh_video->bih->biWidth,
sh_video->bih->biHeight,
sh_video->bih->biBitCount,
sh_video->fps,
sh_video->i_bps*0.008f,
sh_video->i_bps/1024.0f );
}
return demuxer;
}
char* audio_stream = NULL;
char* sub_stream = NULL;
int demuxer_type = 0; // used by rawaudio and rawvideo
int audio_stream_cache = 0;
char *demuxer_name = NULL; // parameter from -demuxer
char *audio_demuxer_name = NULL; // parameter from -audio-demuxer
char *sub_demuxer_name = NULL; // parameter from -sub-demuxer
extern int hr_mp3_seek;
extern float stream_cache_min_percent;
extern float stream_cache_seek_min_percent;
demuxer_t* demux_open(stream_t *vs,int file_format,int audio_id,int video_id,int dvdsub_id,char* filename){
stream_t *as = NULL,*ss = NULL;
demuxer_t *vd,*ad = NULL,*sd = NULL;
int afmt =DEMUXER_TYPE_UNKNOWN,sfmt = DEMUXER_TYPE_UNKNOWN ;
int audio_demuxer_type = 0, sub_demuxer_type = 0;
int demuxer_force = 0, audio_demuxer_force = 0,
sub_demuxer_force = 0;
if ((demuxer_type = get_demuxer_type_from_name(demuxer_name, &demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER,MSGL_ERR,"-demuxer %s does not exist.\n",demuxer_name);
}
if ((audio_demuxer_type = get_demuxer_type_from_name(audio_demuxer_name, &audio_demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER,MSGL_ERR,"-audio-demuxer %s does not exist.\n",audio_demuxer_name);
}
if ((sub_demuxer_type = get_demuxer_type_from_name(sub_demuxer_name, &sub_demuxer_force)) < 0) {
mp_msg(MSGT_DEMUXER,MSGL_ERR,"-sub-demuxer %s does not exist.\n",sub_demuxer_name);
}
if(audio_stream) {
as = open_stream(audio_stream,0,&afmt);
if(!as) {
mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_CannotOpenAudioStream,audio_stream);
return NULL;
}
if(audio_stream_cache) {
if(!stream_enable_cache(as,audio_stream_cache*1024,audio_stream_cache*1024*(stream_cache_min_percent / 100.0),
audio_stream_cache*1024*(stream_cache_seek_min_percent / 100.0))) {
free_stream(as);
mp_msg(MSGT_DEMUXER,MSGL_ERR,"Can't enable audio stream cache\n");
return NULL;
}
}
}
if(sub_stream) {
ss = open_stream(sub_stream,0,&sfmt);
if(!ss) {
mp_msg(MSGT_DEMUXER,MSGL_ERR,MSGTR_CannotOpenSubtitlesStream,sub_stream);
return NULL;
}
}
vd = demux_open_stream(vs, demuxer_type ? demuxer_type : file_format,
demuxer_force, audio_stream ? -2 : audio_id, video_id,
sub_stream ? -2 : dvdsub_id, filename);
if(!vd) {
if(as) free_stream(as);
if(ss) free_stream(ss);
return NULL;
}
if(as) {
ad = demux_open_stream(as, audio_demuxer_type ? audio_demuxer_type : afmt,
audio_demuxer_force, audio_id, -2, -2, audio_stream);
if(!ad) {
mp_msg(MSGT_DEMUXER,MSGL_WARN,MSGTR_OpeningAudioDemuxerFailed,audio_stream);
free_stream(as);
}
else if(ad->audio->sh && ((sh_audio_t*)ad->audio->sh)->format == 0x55) // MP3
hr_mp3_seek=1; // Enable high res seeking
}
if(ss) {
sd = demux_open_stream(ss, sub_demuxer_type ? sub_demuxer_type : sfmt,
sub_demuxer_force, -2, -2, dvdsub_id, sub_stream);
if(!sd) {
mp_msg(MSGT_DEMUXER,MSGL_WARN,MSGTR_OpeningSubtitlesDemuxerFailed,sub_stream);
free_stream(ss);
}
}
if(ad && sd)
return new_demuxers_demuxer(vd,ad,sd);
else if(ad)
return new_demuxers_demuxer(vd,ad,vd);
else if(sd)
return new_demuxers_demuxer(vd,vd,sd);
else
return vd;
}
int demux_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
demux_stream_t *d_audio=demuxer->audio;
demux_stream_t *d_video=demuxer->video;
sh_audio_t *sh_audio=d_audio->sh;
sh_video_t *sh_video=d_video->sh;
double tmp = 0;
double pts;
if(!demuxer->seekable){
if(demuxer->file_format==DEMUXER_TYPE_AVI)
mp_msg(MSGT_SEEK,MSGL_WARN,MSGTR_CantSeekRawAVI);
#ifdef USE_TV
else if (demuxer->file_format==DEMUXER_TYPE_TV)
mp_msg(MSGT_SEEK,MSGL_WARN,MSGTR_TVInputNotSeekable);
#endif
else
mp_msg(MSGT_SEEK,MSGL_WARN,MSGTR_CantSeekFile);
return 0;
}
// clear demux buffers:
if(sh_audio){ ds_free_packs(d_audio);sh_audio->a_buffer_len=0;}
ds_free_packs(d_video);
demuxer->stream->eof=0; // clear eof flag
demuxer->video->eof=0;
demuxer->audio->eof=0;
#if 0
if(sh_audio) sh_audio->timer=sh_video->timer;
#else
if(sh_audio) sh_audio->delay=0;
if(sh_video) sh_video->timer=0; // !!!!!!
#endif
if(flags & 1) // absolute seek
pts = 0.0f;
else {
if(demuxer->stream_pts == MP_NOPTS_VALUE)
goto dmx_seek;
pts = demuxer->stream_pts;
}
if(flags & 2) { // percent seek
if(stream_control(demuxer->stream, STREAM_CTRL_GET_TIME_LENGTH, &tmp) == STREAM_UNSUPORTED)
goto dmx_seek;
pts += tmp * rel_seek_secs;
} else
pts += rel_seek_secs;
if(stream_control(demuxer->stream, STREAM_CTRL_SEEK_TO_TIME, &pts) != STREAM_UNSUPORTED) {
demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
return 1;
}
dmx_seek:
if (demuxer->desc->seek)
demuxer->desc->seek(demuxer,rel_seek_secs,audio_delay,flags);
if (sh_audio) resync_audio_stream(sh_audio);
return 1;
}
int demux_info_add(demuxer_t *demuxer, const char *opt, const char *param)
{
char **info = demuxer->info;
int n = 0;
for(n = 0; info && info[2*n] != NULL; n++)
{
if(!strcasecmp(opt,info[2*n]))
{
mp_msg(MSGT_DEMUX, MSGL_INFO,MSGTR_DemuxerInfoChanged,opt,param);
free(info[2*n+1]);
info[2*n+1] = strdup(param);
return 0;
}
}
info = demuxer->info = (char**)realloc(info,(2*(n+2))*sizeof(char*));
info[2*n] = strdup(opt);
info[2*n+1] = strdup(param);
memset(&info[2*(n+1)],0,2*sizeof(char*));
return 1;
}
int demux_info_print(demuxer_t *demuxer)
{
char **info = demuxer->info;
int n;
if(!info)
return 0;
mp_msg(MSGT_DEMUX, MSGL_INFO,MSGTR_ClipInfo);
for(n = 0; info[2*n] != NULL ; n++)
{
mp_msg(MSGT_DEMUX, MSGL_INFO, " %s: %s\n",info[2*n],info[2*n+1]);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_NAME%d=%s\n", n, info[2*n]);
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_VALUE%d=%s\n", n, info[2*n+1]);
}
mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_CLIP_INFO_N=%d\n", n);
return 0;
}
char* demux_info_get(demuxer_t *demuxer, char *opt) {
int i;
char **info = demuxer->info;
for(i = 0; info && info[2*i] != NULL; i++) {
if(!strcasecmp(opt,info[2*i]))
return info[2*i+1];
}
return NULL;
}
int demux_control(demuxer_t *demuxer, int cmd, void *arg) {
if (demuxer->desc->control)
return demuxer->desc->control(demuxer,cmd,arg);
return DEMUXER_CTRL_NOTIMPL;
}
double demuxer_get_time_length(demuxer_t *demuxer){
double get_time_ans;
sh_video_t *sh_video = demuxer->video->sh;
sh_audio_t *sh_audio = demuxer->audio->sh;
// <= 0 means DEMUXER_CTRL_NOTIMPL or DEMUXER_CTRL_DONTKNOW
if (demux_control(demuxer, DEMUXER_CTRL_GET_TIME_LENGTH,(void *)&get_time_ans)<=0) {
if (sh_video && sh_video->i_bps)
get_time_ans = (double)(demuxer->movi_end-demuxer->movi_start)/sh_video->i_bps;
else if (sh_audio && sh_audio->i_bps)
get_time_ans = (double)(demuxer->movi_end-demuxer->movi_start)/sh_audio->i_bps;
else
get_time_ans=0;
}
return get_time_ans;
}
/**
* \brief demuxer_get_current_time() returns the time of the current play in three possible ways:
* either when the stream reader satisfies STREAM_CTRL_GET_CURRENT_TIME (e.g. dvd)
* or using sh_video->pts when the former method fails
* 0 otherwise
* \return the current play time
*/
int demuxer_get_current_time(demuxer_t *demuxer){
double get_time_ans = 0;
sh_video_t *sh_video = demuxer->video->sh;
if(demuxer->stream_pts != MP_NOPTS_VALUE)
get_time_ans = demuxer->stream_pts;
else if(sh_video) get_time_ans = sh_video->pts;
return (int) get_time_ans;
}
int demuxer_get_percent_pos(demuxer_t *demuxer){
int ans = 0;
int res = demux_control(demuxer, DEMUXER_CTRL_GET_PERCENT_POS, &ans);
int len = (demuxer->movi_end - demuxer->movi_start) / 100;
if (res <= 0) {
if (len > 0)
ans = (demuxer->filepos - demuxer->movi_start) / len;
else
ans = 0;
}
if (ans < 0) ans = 0;
if (ans > 100) ans = 100;
return ans;
}
int demuxer_switch_audio(demuxer_t *demuxer, int index){
int res = demux_control(demuxer, DEMUXER_CTRL_SWITCH_AUDIO, &index);
if (res == DEMUXER_CTRL_NOTIMPL)
index = demuxer->audio->id;
return index;
}
int demuxer_switch_video(demuxer_t *demuxer, int index){
int res = demux_control(demuxer, DEMUXER_CTRL_SWITCH_VIDEO, &index);
if (res == DEMUXER_CTRL_NOTIMPL)
index = demuxer->video->id;
return index;
}
int demuxer_add_chapter(demuxer_t* demuxer, const char* name, uint64_t start, uint64_t end){
if (demuxer->chapters == NULL)
demuxer->chapters = malloc (32*sizeof(*demuxer->chapters));
else if (!(demuxer->num_chapters % 32))
demuxer->chapters = realloc (demuxer->chapters, (demuxer->num_chapters + 32) * sizeof(*demuxer->chapters));
demuxer->chapters[demuxer->num_chapters].start = start;
demuxer->chapters[demuxer->num_chapters].end = end;
demuxer->chapters[demuxer->num_chapters].name = strdup(name);
return demuxer->num_chapters ++;
}
/**
* \brief demuxer_seek_chapter() seeks to a chapter in two possible ways:
* either using the demuxer->chapters structure set by the demuxer
* or asking help to the stream layer (e.g. dvd)
* \param chapter - chapter number wished - 0-based
* \param mode 0: relative to current main pts, 1: absolute
* \param seek_pts set by the function to the pts to seek to (if demuxer->chapters is set)
* \param num_chapters number of chapters present (set by this function is param is not null)
* \param chapter_name name of chapter found (set by this function is param is not null)
* \return -1 on error, current chapter if successful
*/
int demuxer_seek_chapter(demuxer_t *demuxer, int chapter, int mode, float *seek_pts, int *num_chapters, char **chapter_name) {
int ris;
int current, total;
sh_video_t *sh_video = demuxer->video->sh;
sh_audio_t *sh_audio = demuxer->audio->sh;
if (!demuxer->num_chapters || !demuxer->chapters) {
if(!mode) {
ris = stream_control(demuxer->stream, STREAM_CTRL_GET_CURRENT_CHAPTER, &current);
if(ris == STREAM_UNSUPORTED) return -1;
chapter += current;
}
if(demuxer->video->sh)
ds_free_packs(demuxer->video);
if(demuxer->audio->sh)
ds_free_packs(demuxer->audio);
if(demuxer->sub->id >= 0)
ds_free_packs(demuxer->sub);
ris = stream_control(demuxer->stream, STREAM_CTRL_SEEK_TO_CHAPTER, &chapter);
if(ris != STREAM_UNSUPORTED)
demux_control(demuxer, DEMUXER_CTRL_RESYNC, NULL);
if(sh_video) {
ds_fill_buffer(demuxer->video);
resync_video_stream(sh_video);
}
if(sh_audio) {
ds_fill_buffer(demuxer->audio);
resync_audio_stream(sh_audio);
}
//exit status may be ok, but main() doesn't have to seek itself (because e.g. dvds depend on sectors, not on pts)
*seek_pts = -1.0;
if(num_chapters) {
if(stream_control(demuxer->stream, STREAM_CTRL_GET_NUM_CHAPTERS, num_chapters) == STREAM_UNSUPORTED)
*num_chapters = 0;
}
if(chapter_name) {
char *tmp = malloc(16);
*chapter_name = NULL;
if(num_chapters && *num_chapters && tmp) {
sprintf(tmp, " of %3d", *num_chapters);
*chapter_name = tmp;
}
}
return (ris != STREAM_UNSUPORTED ? chapter : -1);
} else { //chapters structure is set in the demuxer
total = demuxer->num_chapters;
if (mode==1) { //absolute seeking
current = chapter;
} else { //relative seeking
uint64_t now;
now = (sh_video ? sh_video->pts : (sh_audio ? sh_audio->pts : 0.)) * 1000 + .5;
for (current = total - 1; current >= 0; --current) {
demux_chapter_t* chapter = demuxer->chapters + current;
if (chapter->start <= now)
break;
}
current += chapter;
}
if (current >= total)
return -1;
if (current < 0) current = 0;
*seek_pts = demuxer->chapters[current].start / 1000.0;
if(num_chapters)
*num_chapters = demuxer->num_chapters;
if(chapter_name) {
if(demuxer->chapters[current].name)
*chapter_name = strdup(demuxer->chapters[current].name);
else *chapter_name = NULL;
}
return current;
}
}
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