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 & 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   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   { "png",  mmioFOURCC('M', 'P', 'N', 'G') },
  69   { "tga",  mmioFOURCC('M', 'T', 'G', 'A') },
  70   { "tif",  mmioFOURCC('t', 'i', 'f', 'f') },
  71   { "sgi",  mmioFOURCC('S', 'G', 'I', '1') },
  72   { NULL,   0 }
  73 };
  74
  75 static demuxer_t* demux_open_mf(demuxer_t* demuxer){
  76   sh_video_t   *sh_video = NULL;
  77   mf_t         *mf = NULL;
  78   int i;
  79
  80   if(!demuxer->stream->url) return NULL;
  81   if(strncmp(demuxer->stream->url, "mf://", 5)) return NULL;
  82
  83
  84   mf=open_mf(demuxer->stream->url + 5);
  85   if(!mf) return NULL;
  86
  87   if(!mf_type){
  88     char* p=strrchr(mf->names[0],'.');
  89     if(!p){
  90       mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! (try -mf type=xxx)\n" );
  91       free( mf ); return NULL;
  92     }
  93     mf_type=strdup(p+1);
  94     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! trying 'type=%s'...\n", mf_type);
  95   }
  96
  97   mf->curr_frame=0;
  98
  99   demuxer->movi_start = 0;
 100   demuxer->movi_end = mf->nr_of_files - 1;
 101
 102   // create a new video stream header
 103   sh_video = new_sh_video(demuxer, 0);
 104   // make sure the demuxer knows about the new video stream header
 105   // (even though new_sh_video() ought to take care of it)
 106   demuxer->video->sh = sh_video;
 107
 108   // make sure that the video demuxer stream header knows about its
 109   // parent video demuxer stream (this is getting wacky), or else
 110   // video_read_properties() will choke
 111   sh_video->ds = demuxer->video;
 112
 113   for (i = 0; type2format[i].type; i++)
 114     if (strcasecmp(mf_type, type2format[i].type) == 0)
 115       break;
 116   if (!type2format[i].type) {
 117     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] unknown input file type.\n" );
 118     free(mf);
 119     return NULL;
 120   }
 121   sh_video->format = type2format[i].format;
 122
 123   sh_video->disp_w = mf_w;
 124   sh_video->disp_h = mf_h;
 125   sh_video->fps = mf_fps;
 126   sh_video->frametime = 1 / sh_video->fps;
 127
 128   // emulate BITMAPINFOHEADER:
 129   sh_video->bih=malloc(sizeof(BITMAPINFOHEADER));
 130   memset(sh_video->bih,0,sizeof(BITMAPINFOHEADER));
 131   sh_video->bih->biSize=40;
 132   sh_video->bih->biWidth = mf_w;
 133   sh_video->bih->biHeight = mf_h;
 134   sh_video->bih->biPlanes=1;
 135   sh_video->bih->biBitCount=24;
 136   sh_video->bih->biCompression=sh_video->format;
 137   sh_video->bih->biSizeImage=sh_video->bih->biWidth*sh_video->bih->biHeight*3;
 138
 139   /* disable seeking */
 140 //  demuxer->seekable = 0;
 141
 142   demuxer->priv=(void*)mf;
 143
 144   return demuxer;
 145 }
 146
 147 static void demux_close_mf(demuxer_t* demuxer) {
 148   mf_t *mf = demuxer->priv;
 149
 150   if(!mf)
 151     return;
 152   free(mf);
 153 }
 154
 155 static int demux_control_mf(demuxer_t *demuxer, int cmd, void *arg) {
 156   mf_t *mf = (mf_t *)demuxer->priv;
 157   sh_video_t *sh_video = demuxer->video->sh;
 158
 159   switch(cmd) {
 160     case DEMUXER_CTRL_GET_TIME_LENGTH:
 161       *((double *)arg) = (double)mf->nr_of_files / sh_video->fps;
 162       return DEMUXER_CTRL_OK;
 163
 164     case DEMUXER_CTRL_GET_PERCENT_POS:
 165       if (mf->nr_of_files <= 1)
 166         return DEMUXER_CTRL_DONTKNOW;
 167       *((int *)arg) = 100 * mf->curr_frame / (mf->nr_of_files - 1);
 168       return DEMUXER_CTRL_OK;
 169
 170     default:
 171       return DEMUXER_CTRL_NOTIMPL;
 172   }
 173 }
 174
 175 demuxer_desc_t demuxer_desc_mf = {
 176   "mf demuxer",
 177   "mf",
 178   "MF",
 179   "?",
 180   "multiframe?, pictures demuxer",
 181   DEMUXER_TYPE_MF,
 182   0, // no autodetect
 183   NULL,
 184   demux_mf_fill_buffer,
 185   demux_open_mf,
 186   demux_close_mf,
 187   demux_seek_mf,
 188   demux_control_mf
 189 };