libmpdemux/demux_mf.c

   1
   2 #include <stdio.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <sys/types.h>
   6 #include <sys/stat.h>
   7 #include <unistd.h>
   8
   9 #include "config.h"
  10 #include "mp_msg.h"
  11 #include "help_mp.h"
  12
  13 #include "stream.h"
  14 #include "demuxer.h"
  15 #include "stheader.h"
  16 #include "mf.h"
  17
  18 static void demux_seek_mf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
  19   mf_t * mf = (mf_t *)demuxer->priv;
  20   sh_video_t   * sh_video = demuxer->video->sh;
  21   int newpos = (flags & 1)?0:mf->curr_frame - 1;
  22
  23   if ( flags & 2 ) newpos+=rel_seek_secs*(mf->nr_of_files - 1);
  24    else newpos+=rel_seek_secs * sh_video->fps;
  25   if ( newpos < 0 ) newpos=0;
  26   if( newpos >= mf->nr_of_files) newpos=mf->nr_of_files - 1;
  27   mf->curr_frame=newpos;
  28 }
  29
  30 // return value:
  31 //     0 = EOF or no stream found
  32 //     1 = successfully read a packet
  33 static int demux_mf_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds){
  34   mf_t         * mf;
  35   struct stat    fs;
  36   FILE         * f;
  37
  38   mf=(mf_t*)demuxer->priv;
  39   if ( mf->curr_frame >= mf->nr_of_files ) return 0;
  40
  41   stat( mf->names[mf->curr_frame],&fs );
  42 //  printf( "[demux_mf] frame: %d (%s,%d)\n",mf->curr_frame,mf->names[mf->curr_frame],fs.st_size );
  43
  44 #ifdef WIN32
  45   if ( !( f=fopen( mf->names[mf->curr_frame],"rb" ) ) ) return 0;
  46 #else
  47   if ( !( f=fopen( mf->names[mf->curr_frame],"r" ) ) ) return 0;
  48 #endif
  49   {
  50    sh_video_t     * sh_video = demuxer->video->sh;
  51    demux_packet_t * dp = new_demux_packet( fs.st_size );
  52    if ( !fread( dp->buffer,fs.st_size,1,f ) ) return 0;
  53    dp->pts=mf->curr_frame / sh_video->fps;
  54    dp->pos=mf->curr_frame;
  55    dp->flags=0;
  56    // append packet to DS stream:
  57    ds_add_packet( demuxer->video,dp );
  58   }
  59   fclose( f );
  60
  61   mf->curr_frame++;
  62   return 1;
  63 }
  64
  65 static demuxer_t* demux_open_mf(demuxer_t* demuxer){
  66   sh_video_t   *sh_video = NULL;
  67   mf_t         *mf = NULL;
  68
  69   if(!demuxer->stream->url) return NULL;
  70   if(strncmp(demuxer->stream->url, "mf://", 5)) return NULL;
  71
  72
  73   mf=open_mf(demuxer->stream->url + 5);
  74   if(!mf) return NULL;
  75
  76   if(!mf_type){
  77     char* p=strrchr(mf->names[0],'.');
  78     if(!p){
  79       mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! (try -mf type=xxx)\n" );
  80       free( mf ); return NULL;
  81     }
  82     mf_type=strdup(p+1);
  83     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! trying 'type=%s'...\n", mf_type);
  84   }
  85
  86   mf->curr_frame=0;
  87
  88   demuxer->movi_start = 0;
  89   demuxer->movi_end = mf->nr_of_files - 1;
  90
  91   // create a new video stream header
  92   sh_video = new_sh_video(demuxer, 0);
  93   // make sure the demuxer knows about the new video stream header
  94   // (even though new_sh_video() ought to take care of it)
  95   demuxer->video->sh = sh_video;
  96
  97   // make sure that the video demuxer stream header knows about its
  98   // parent video demuxer stream (this is getting wacky), or else
  99   // video_read_properties() will choke
 100   sh_video->ds = demuxer->video;
 101
 102   if ( !strcasecmp( mf_type,"jpg" ) ||
 103         !(strcasecmp(mf_type, "jpeg"))) sh_video->format = mmioFOURCC('I', 'J', 'P', 'G');
 104   else
 105      if ( !strcasecmp( mf_type,"png" )) sh_video->format = mmioFOURCC('M', 'P', 'N', 'G' );
 106   else
 107      if ( !strcasecmp( mf_type,"tga" )) sh_video->format = mmioFOURCC('M', 'T', 'G', 'A' );
 108    else
 109      if (!strcasecmp( mf_type,"sgi" )) sh_video->format = mmioFOURCC('S', 'G', 'I', '1');
 110   else { mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] unknown input file type.\n" ); free( mf ); return NULL; }
 111
 112   sh_video->disp_w = mf_w;
 113   sh_video->disp_h = mf_h;
 114   sh_video->fps = mf_fps;
 115   sh_video->frametime = 1 / sh_video->fps;
 116
 117   // emulate BITMAPINFOHEADER:
 118   sh_video->bih=malloc(sizeof(BITMAPINFOHEADER));
 119   memset(sh_video->bih,0,sizeof(BITMAPINFOHEADER));
 120   sh_video->bih->biSize=40;
 121   sh_video->bih->biWidth = mf_w;
 122   sh_video->bih->biHeight = mf_h;
 123   sh_video->bih->biPlanes=1;
 124   sh_video->bih->biBitCount=24;
 125   sh_video->bih->biCompression=sh_video->format;
 126   sh_video->bih->biSizeImage=sh_video->bih->biWidth*sh_video->bih->biHeight*3;
 127
 128   /* disable seeking */
 129 //  demuxer->seekable = 0;
 130
 131   demuxer->priv=(void*)mf;
 132
 133   return demuxer;
 134 }
 135
 136 static void demux_close_mf(demuxer_t* demuxer) {
 137   mf_t *mf = demuxer->priv;
 138
 139   if(!mf)
 140     return;
 141   free(mf);
 142 }
 143
 144 static int demux_control_mf(demuxer_t *demuxer, int cmd, void *arg) {
 145   mf_t *mf = (mf_t *)demuxer->priv;
 146   sh_video_t *sh_video = demuxer->video->sh;
 147
 148   switch(cmd) {
 149     case DEMUXER_CTRL_GET_TIME_LENGTH:
 150       *((double *)arg) = (double)mf->nr_of_files / sh_video->fps;
 151       return DEMUXER_CTRL_OK;
 152
 153     case DEMUXER_CTRL_GET_PERCENT_POS:
 154       if (mf->nr_of_files <= 1)
 155         return DEMUXER_CTRL_DONTKNOW;
 156       *((int *)arg) = 100 * mf->curr_frame / (mf->nr_of_files - 1);
 157       return DEMUXER_CTRL_OK;
 158
 159     default:
 160       return DEMUXER_CTRL_NOTIMPL;
 161   }
 162 }
 163
 164 demuxer_desc_t demuxer_desc_mf = {
 165   "mf demuxer",
 166   "mf",
 167   "MF",
 168   "?",
 169   "multiframe?, pictures demuxer",
 170   DEMUXER_TYPE_MF,
 171   0, // no autodetect
 172   NULL,
 173   demux_mf_fill_buffer,
 174   demux_open_mf,
 175   demux_close_mf,
 176   demux_seek_mf,
 177   demux_control_mf
 178 };