libmpdemux/demux_mf.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <unistd.h>
  25
  26 #include "talloc.h"
  27 #include "config.h"
  28 #include "mp_msg.h"
  29
  30 #include "stream/stream.h"
  31 #include "demuxer.h"
  32 #include "stheader.h"
  33 #include "mf.h"
  34
  35 static void demux_seek_mf(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
  36   mf_t * mf = (mf_t *)demuxer->priv;
  37   sh_video_t   * sh_video = demuxer->video->sh;
  38   int newpos = (flags & SEEK_ABSOLUTE)?0:mf->curr_frame - 1;
  39
  40   if ( flags & SEEK_FACTOR ) newpos+=rel_seek_secs*(mf->nr_of_files - 1);
  41    else newpos+=rel_seek_secs * sh_video->fps;
  42   if ( newpos < 0 ) newpos=0;
  43   if( newpos >= mf->nr_of_files) newpos=mf->nr_of_files - 1;
  44   demuxer->filepos=mf->curr_frame=newpos;
  45 }
  46
  47 // return value:
  48 //     0 = EOF or no stream found
  49 //     1 = successfully read a packet
  50 static int demux_mf_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds){
  51   mf_t         * mf;
  52   struct stat    fs;
  53   FILE         * f;
  54
  55   mf=(mf_t*)demuxer->priv;
  56   if ( mf->curr_frame >= mf->nr_of_files ) return 0;
  57
  58   stat( mf->names[mf->curr_frame],&fs );
  59 //  printf( "[demux_mf] frame: %d (%s,%d)\n",mf->curr_frame,mf->names[mf->curr_frame],fs.st_size );
  60
  61   if ( !( f=fopen( mf->names[mf->curr_frame],"rb" ) ) ) return 0;
  62   {
  63    sh_video_t     * sh_video = demuxer->video->sh;
  64    demux_packet_t * dp = new_demux_packet( fs.st_size );
  65    if ( !fread( dp->buffer,fs.st_size,1,f ) ) return 0;
  66    dp->pts=mf->curr_frame / sh_video->fps;
  67    dp->pos=mf->curr_frame;
  68    dp->flags=0;
  69    // append packet to DS stream:
  70    ds_add_packet( demuxer->video,dp );
  71   }
  72   fclose( f );
  73
  74   demuxer->filepos=mf->curr_frame++;
  75   return 1;
  76 }
  77
  78 // force extension/type to have a fourcc
  79
  80 static const struct {
  81   const char *type;
  82   uint32_t format;
  83 } type2format[] = {
  84   { "bmp",  mmioFOURCC('b', 'm', 'p', ' ') },
  85   { "dpx",  mmioFOURCC('d', 'p', 'x', ' ') },
  86   { "j2k",  mmioFOURCC('M', 'J', '2', 'C') },
  87   { "jp2",  mmioFOURCC('M', 'J', '2', 'C') },
  88   { "jpeg", mmioFOURCC('I', 'J', 'P', 'G') },
  89   { "jpg",  mmioFOURCC('I', 'J', 'P', 'G') },
  90   { "jls",  mmioFOURCC('I', 'J', 'P', 'G') },
  91   { "thm",  mmioFOURCC('I', 'J', 'P', 'G') },
  92   { "db",   mmioFOURCC('I', 'J', 'P', 'G') },
  93   { "pcx",  mmioFOURCC('p', 'c', 'x', ' ') },
  94   { "png",  mmioFOURCC('M', 'P', 'N', 'G') },
  95   { "ptx",  mmioFOURCC('p', 't', 'x', ' ') },
  96   { "tga",  mmioFOURCC('M', 'T', 'G', 'A') },
  97   { "tif",  mmioFOURCC('t', 'i', 'f', 'f') },
  98   { "sgi",  mmioFOURCC('S', 'G', 'I', '1') },
  99   { "sun",  mmioFOURCC('s', 'u', 'n', ' ') },
 100   { "ras",  mmioFOURCC('s', 'u', 'n', ' ') },
 101   { "ra",  mmioFOURCC('s', 'u', 'n', ' ') },
 102   { "im1",  mmioFOURCC('s', 'u', 'n', ' ') },
 103   { "im8",  mmioFOURCC('s', 'u', 'n', ' ') },
 104   { "im24",  mmioFOURCC('s', 'u', 'n', ' ') },
 105   { "sunras",  mmioFOURCC('s', 'u', 'n', ' ') },
 106   { NULL,   0 }
 107 };
 108
 109 static demuxer_t* demux_open_mf(demuxer_t* demuxer){
 110   sh_video_t   *sh_video = NULL;
 111   mf_t         *mf = NULL;
 112   int i;
 113
 114   if(!demuxer->stream->url) return NULL;
 115   if(strncmp(demuxer->stream->url, "mf://", 5)) return NULL;
 116
 117
 118   mf=open_mf(demuxer->stream->url + 5);
 119   if(!mf) return NULL;
 120
 121   if(!mf_type){
 122     char* p=strrchr(mf->names[0],'.');
 123     if(!p){
 124       mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! (try -mf type=xxx)\n" );
 125       free( mf ); return NULL;
 126     }
 127     mf_type = talloc_strdup(NULL, p+1);
 128     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] file type was not set! trying 'type=%s'...\n", mf_type);
 129   }
 130
 131   demuxer->filepos=mf->curr_frame=0;
 132
 133   demuxer->movi_start = 0;
 134   demuxer->movi_end = mf->nr_of_files - 1;
 135
 136   // create a new video stream header
 137   sh_video = new_sh_video(demuxer, 0);
 138   // make sure the demuxer knows about the new video stream header
 139   // (even though new_sh_video() ought to take care of it)
 140   demuxer->video->sh = sh_video;
 141
 142   // make sure that the video demuxer stream header knows about its
 143   // parent video demuxer stream (this is getting wacky), or else
 144   // video_read_properties() will choke
 145   sh_video->ds = demuxer->video;
 146
 147   for (i = 0; type2format[i].type; i++)
 148     if (strcasecmp(mf_type, type2format[i].type) == 0)
 149       break;
 150   if (!type2format[i].type) {
 151     mp_msg(MSGT_DEMUX, MSGL_INFO, "[demux_mf] unknown input file type.\n" );
 152     free(mf);
 153     return NULL;
 154   }
 155   sh_video->format = type2format[i].format;
 156
 157   sh_video->disp_w = mf_w;
 158   sh_video->disp_h = mf_h;
 159   sh_video->fps = mf_fps;
 160   sh_video->frametime = 1 / sh_video->fps;
 161
 162   // emulate BITMAPINFOHEADER:
 163   sh_video->bih=calloc(1, sizeof(*sh_video->bih));
 164   sh_video->bih->biSize=40;
 165   sh_video->bih->biWidth = mf_w;
 166   sh_video->bih->biHeight = mf_h;
 167   sh_video->bih->biPlanes=1;
 168   sh_video->bih->biBitCount=24;
 169   sh_video->bih->biCompression=sh_video->format;
 170   sh_video->bih->biSizeImage=sh_video->bih->biWidth*sh_video->bih->biHeight*3;
 171
 172   /* disable seeking */
 173 //  demuxer->seekable = 0;
 174
 175   demuxer->priv=(void*)mf;
 176
 177   return demuxer;
 178 }
 179
 180 static void demux_close_mf(demuxer_t* demuxer) {
 181   mf_t *mf = demuxer->priv;
 182
 183   free(mf);
 184 }
 185
 186 static int demux_control_mf(demuxer_t *demuxer, int cmd, void *arg) {
 187   mf_t *mf = (mf_t *)demuxer->priv;
 188   sh_video_t *sh_video = demuxer->video->sh;
 189
 190   switch(cmd) {
 191     case DEMUXER_CTRL_GET_TIME_LENGTH:
 192       *((double *)arg) = (double)mf->nr_of_files / sh_video->fps;
 193       return DEMUXER_CTRL_OK;
 194
 195     case DEMUXER_CTRL_GET_PERCENT_POS:
 196       if (mf->nr_of_files <= 1)
 197         return DEMUXER_CTRL_DONTKNOW;
 198       *((int *)arg) = 100 * mf->curr_frame / (mf->nr_of_files - 1);
 199       return DEMUXER_CTRL_OK;
 200
 201     default:
 202       return DEMUXER_CTRL_NOTIMPL;
 203   }
 204 }
 205
 206 const demuxer_desc_t demuxer_desc_mf = {
 207   "mf demuxer",
 208   "mf",
 209   "MF",
 210   "?",
 211   "multiframe?, pictures demuxer",
 212   DEMUXER_TYPE_MF,
 213   0, // no autodetect
 214   NULL,
 215   demux_mf_fill_buffer,
 216   demux_open_mf,
 217   demux_close_mf,
 218   demux_seek_mf,
 219   demux_control_mf
 220 };