summaryrefslogtreecommitdiffstats
path: root/demux/demux_rawvideo.c
blob: e84caafd019049d1a883769d7815941141d9c91d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
/*
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>

#include "m_option.h"

#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"

#include "libmpcodecs/img_format.h"

static int format = IMGFMT_I420;
static int size_id = 0;
static int width = 0;
static int height = 0;
static float fps = 25;
static int imgsize=0;

const m_option_t demux_rawvideo_opts[] = {
  // size:
  { "w", &width, CONF_TYPE_INT,CONF_RANGE,1,8192, NULL },
  { "h", &height, CONF_TYPE_INT,CONF_RANGE,1,8192, NULL },
  { "sqcif", &size_id, CONF_TYPE_FLAG,0,0,1, NULL },
  { "qcif", &size_id, CONF_TYPE_FLAG,0,0,2, NULL },
  { "cif", &size_id, CONF_TYPE_FLAG,0,0,3, NULL },
  { "4cif", &size_id, CONF_TYPE_FLAG,0,0,4, NULL },
  { "pal", &size_id, CONF_TYPE_FLAG,0,0,5, NULL },
  { "ntsc", &size_id, CONF_TYPE_FLAG,0,0,6, NULL },
  { "16cif", &size_id, CONF_TYPE_FLAG,0,0,7, NULL },
  { "sif", &size_id, CONF_TYPE_FLAG,0,0,8, NULL },
  // format:
  { "format", &format, CONF_TYPE_IMGFMT, 0, 0 , 0, NULL },
  // below options are obsolete
  { "i420", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_I420, NULL },
  { "yv12", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_YV12, NULL },
  { "nv12", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_NV12, NULL },
  { "hm12", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_HM12, NULL },
  { "yuy2", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_YUY2, NULL },
  { "uyvy", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_UYVY, NULL },
  { "y8", &format, CONF_TYPE_FLAG, 0, 0 , IMGFMT_Y8, NULL },
  // misc:
  { "fps", &fps, CONF_TYPE_FLOAT,CONF_RANGE,0.001,1000, NULL },
  { "size", &imgsize, CONF_TYPE_INT, CONF_RANGE, 1 , 8192*8192*4, NULL },

  {NULL, NULL, 0, 0, 0, 0, NULL}
};


static demuxer_t* demux_rawvideo_open(demuxer_t* demuxer) {
  sh_video_t* sh_video;

  switch(size_id){
  case 1: width=128; height=96; break;
  case 2: width=176; height=144; break;
  case 3: width=352; height=288; break;
  case 4: width=704; height=576; break;
  case 5: width=720; height=576; break;
  case 6: width=720; height=480; break;
  case 7: width=1408;height=1152;break;
  case 8: width=352; height=240; break;
  }
  if(!width || !height){
      mp_msg(MSGT_DEMUX,MSGL_ERR,"rawvideo: width or height not specified!\n");
      return 0;
  }

  if(!imgsize)
  switch(format){
  case IMGFMT_I420:
  case IMGFMT_IYUV:
  case IMGFMT_NV12:
  case IMGFMT_HM12:
  case IMGFMT_YV12: imgsize=width*height+2*(width>>1)*(height>>1);break;
  case IMGFMT_YUY2:
  case IMGFMT_UYVY: imgsize=width*height*2;break;
  case IMGFMT_Y800:
  case IMGFMT_Y8: imgsize=width*height;break;
  default:
      if (IMGFMT_IS_RGB(format))
        imgsize = width * height * ((IMGFMT_RGB_DEPTH(format) + 7) >> 3);
      else if (IMGFMT_IS_BGR(format))
        imgsize = width * height * ((IMGFMT_BGR_DEPTH(format) + 7) >> 3);
      else {
      mp_msg(MSGT_DEMUX,MSGL_ERR,"rawvideo: img size not specified and unknown format!\n");
      return 0;
      }
  }

  sh_video = new_sh_video(demuxer,0);
  sh_video->format=format;
  sh_video->fps=fps;
  sh_video->frametime=1.0/fps;
  sh_video->disp_w=width;
  sh_video->disp_h=height;
  sh_video->i_bps=fps*imgsize;

  demuxer->movi_start = demuxer->stream->start_pos;
  demuxer->movi_end = demuxer->stream->end_pos;

  demuxer->video->sh = sh_video;
  sh_video->ds = demuxer->video;

  return demuxer;
}

static int demux_rawvideo_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
  sh_video_t* sh = demuxer->video->sh;
  off_t pos;
  if(demuxer->stream->eof) return 0;
  if(ds!=demuxer->video) return 0;
  pos = stream_tell(demuxer->stream);
  ds_read_packet(ds,demuxer->stream,imgsize,(pos/imgsize)*sh->frametime,pos,0x10);
  return 1;
}

static void demux_rawvideo_seek(demuxer_t *demuxer,float rel_seek_secs,float audio_delay,int flags){
  stream_t* s = demuxer->stream;
  sh_video_t* sh_video = demuxer->video->sh;
  off_t pos;

  pos = (flags & SEEK_ABSOLUTE) ? demuxer->movi_start : stream_tell(s);
  if(flags & SEEK_FACTOR)
    pos += ((demuxer->movi_end - demuxer->movi_start)*rel_seek_secs);
  else
    pos += (rel_seek_secs*sh_video->i_bps);
  if(pos < 0) pos = 0;
  if(demuxer->movi_end && pos > demuxer->movi_end) pos = (demuxer->movi_end-imgsize);
  pos/=imgsize;
  stream_seek(s,pos*imgsize);
  //sh_video->timer=pos * sh_video->frametime;
  demuxer->video->pts = pos * sh_video->frametime;
//  printf("demux_rawvideo: streamtell=%d\n",(int)stream_tell(demuxer->stream));
}


const demuxer_desc_t demuxer_desc_rawvideo = {
  "Raw video demuxer",
  "rawvideo",
  "rawvideo",
  "?",
  "",
  DEMUXER_TYPE_RAWVIDEO,
  0, // no autodetect
  NULL,
  demux_rawvideo_fill_buffer,
  demux_rawvideo_open,
  NULL,
  demux_rawvideo_seek,
  NULL
};