summaryrefslogtreecommitdiffstats
path: root/libmpdemux/demux_rawvideo.c
blob: 1bfc616dbbf0ae8435820d19101c0460fff4c29c (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

#include "config.h"

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

#include "../m_option.h"

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

#include "../libmpcodecs/img_format.h"

extern int demuxer_type;
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;

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: imgsize=width*height*2;break;
  case IMGFMT_UYVY: imgsize=width*height*2;break;
  case IMGFMT_Y8: imgsize=width*height;break;
  default:
      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,int flags){
  stream_t* s = demuxer->stream;
  sh_video_t* sh_video = demuxer->video->sh;
  off_t pos;

  pos = (flags & 1) ? demuxer->movi_start : stream_tell(s);
  if(flags & 2)
    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));
}


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
};