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/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 & SEEK_ABSOLUTE)?0:mf->curr_frame - 1;
  22
  23   if ( flags & SEEK_FACTOR ) 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   if ( !( f=fopen( mf->names[mf->curr_frame],"rb" ) ) ) return 0;
  45   {
  46    sh_video_t     * sh_video = demuxer->video->sh;
  47    demux_packet_t * dp = new_demux_packet( fs.st_size );
  48    if ( !fread( dp->buffer,fs.st_size,1,f ) ) return 0;
  49    dp->pts=mf->curr_frame / sh_video->fps;
  50    dp->pos=mf->curr_frame;
  51    dp->flags=0;
  52    // append packet to DS stream:
  53    ds_add_packet( demuxer->video,dp );
  54   }
  55   fclose( f );
  56
  57   mf->curr_frame++;
  58   return 1;
  59 }
  60
  61 static const struct {
  62   const char *type;
  63   uint32_t format;
  64 } type2format[] = {
  65   { "bmp",  mmioFOURCC('b', 'm', 'p', ' ') },
  66   { "jpeg", mmioFOURCC('I', 'J', 'P', 'G') },
  67   { "jpg",  mmioFOURCC('I', 'J', 'P', 'G') },
  68   { "pcx",  mmioFOURCC('p', 'c', 'x', ' ') },
  69   { "png",  mmioFOURCC('M', 'P', 'N', 'G') },
  70   { "ptx",  mmioFOURCC('p', 't', 'x', ' ') },
  71   { "tga",  mmioFOURCC('M', 'T', 'G', 'A') },
  72   { "tif",  mmioFOURCC('t', 'i', 'f', 'f') },
  73   { "sgi",  mmioFOURCC('S', 'G', 'I', '1') },
  74   { "sun",  mmioFOURCC('s', 'u', 'n', ' ') },
  75   { "ras",  mmioFOURCC('s', 'u', 'n', ' ') },
  76   { "ra",  mmioFOURCC('s', 'u', 'n', ' ') },
  77   { "im1",  mmioFOURCC('s', 'u', 'n', ' ') },
  78   { "im8",  mmioFOURCC('s', 'u', 'n', ' ') },
  79   { "im24",  mmioFOURCC('s', 'u', 'n', ' ') },
  80   { "sunras",  mmioFOURCC('s', 'u', 'n', ' ') },
  81   { NULL,   0 }
  82 };
  83
  84 static demuxer_t* demux_open_mf(demuxer_t* demuxer){
  85   sh_video_t   *sh_video = NULL;
  86   mf_t         *mf = NULL;
  87   int i;
  88
  89   if(!demuxer->stream->url) return NULL;
  90   if(strncmp(demuxer->stream->url, "mf://", 5)) return NULL;
  91
  92
  93   mf=open_mf(demuxer->stream->url + 5);
  94   if(!mf) return NULL;
  95
  96   if(!mf_type){
  97     char* p=strrchr(mf->names[0],'.');
  98     if(!p){
  99       mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! (try -mf type=xxx)\n" );
 100       free( mf ); return NULL;
 101     }
 102     mf_type=strdup(p+1);
 103     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! trying 'type=%s'...\n", mf_type);
 104   }
 105
 106   mf->curr_frame=0;
 107
 108   demuxer->movi_start = 0;
 109   demuxer->movi_end = mf->nr_of_files - 1;
 110
 111   // create a new video stream header
 112   sh_video = new_sh_video(demuxer, 0);
 113   // make sure the demuxer knows about the new video stream header
 114   // (even though new_sh_video() ought to take care of it)
 115   demuxer->video->sh = sh_video;
 116
 117   // make sure that the video demuxer stream header knows about its
 118   // parent video demuxer stream (this is getting wacky), or else
 119   // video_read_properties() will choke
 120   sh_video->ds = demuxer->video;
 121
 122   for (i = 0; type2format[i].type; i++)
 123     if (strcasecmp(mf_type, type2format[i].type) == 0)
 124       break;
 125   if (!type2format[i].type) {
 126     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] unknown input file type.\n" );
 127     free(mf);
 128     return NULL;
 129   }
 130   sh_video->format = type2format[i].format;
 131
 132   sh_video->disp_w = mf_w;
 133   sh_video->disp_h = mf_h;
 134   sh_video->fps = mf_fps;
 135   sh_video->frametime = 1 / sh_video->fps;
 136
 137   // emulate BITMAPINFOHEADER:
 138   sh_video->bih=malloc(sizeof(BITMAPINFOHEADER));
 139   memset(sh_video->bih,0,sizeof(BITMAPINFOHEADER));
 140   sh_video->bih->biSize=40;
 141   sh_video->bih->biWidth = mf_w;
 142   sh_video->bih->biHeight = mf_h;
 143   sh_video->bih->biPlanes=1;
 144   sh_video->bih->biBitCount=24;
 145   sh_video->bih->biCompression=sh_video->format;
 146   sh_video->bih->biSizeImage=sh_video->bih->biWidth*sh_video->bih->biHeight*3;
 147
 148   /* disable seeking */
 149 //  demuxer->seekable = 0;
 150
 151   demuxer->priv=(void*)mf;
 152
 153   return demuxer;
 154 }
 155
 156 static void demux_close_mf(demuxer_t* demuxer) {
 157   mf_t *mf = demuxer->priv;
 158
 159   if(!mf)
 160     return;
 161   free(mf);
 162 }
 163
 164 static int demux_control_mf(demuxer_t *demuxer, int cmd, void *arg) {
 165   mf_t *mf = (mf_t *)demuxer->priv;
 166   sh_video_t *sh_video = demuxer->video->sh;
 167
 168   switch(cmd) {
 169     case DEMUXER_CTRL_GET_TIME_LENGTH:
 170       *((double *)arg) = (double)mf->nr_of_files / sh_video->fps;
 171       return DEMUXER_CTRL_OK;
 172
 173     case DEMUXER_CTRL_GET_PERCENT_POS:
 174       if (mf->nr_of_files <= 1)
 175         return DEMUXER_CTRL_DONTKNOW;
 176       *((int *)arg) = 100 * mf->curr_frame / (mf->nr_of_files - 1);
 177       return DEMUXER_CTRL_OK;
 178
 179     default:
 180       return DEMUXER_CTRL_NOTIMPL;
 181   }
 182 }
 183
 184 const demuxer_desc_t demuxer_desc_mf = {
 185   "mf demuxer",
 186   "mf",
 187   "MF",
 188   "?",
 189   "multiframe?, pictures demuxer",
 190   DEMUXER_TYPE_MF,
 191   0, // no autodetect
 192   NULL,
 193   demux_mf_fill_buffer,
 194   demux_open_mf,
 195   demux_close_mf,
 196   demux_seek_mf,
 197   demux_control_mf
 198 };