stream/tvi_dummy.c

   1 /*
   2     Only a sample!
   3 */
   4
   5 #include "config.h"
   6
   7 #include <stdio.h>
   8 #include "libmpcodecs/img_format.h"
   9 #include "tv.h"
  10
  11 static tvi_handle_t *tvi_init_dummy(tv_param_t* tv_param);
  12 /* information about this file */
  13 const tvi_info_t tvi_info_dummy = {
  14         tvi_init_dummy,
  15         "NULL-TV",
  16         "dummy",
  17         "alex",
  18         NULL
  19 };
  20
  21 /* private data's */
  22 typedef struct {
  23     int width;
  24     int height;
  25 } priv_t;
  26
  27 #include "tvi_def.h"
  28
  29 /* handler creator - entry point ! */
  30 static tvi_handle_t *tvi_init_dummy(tv_param_t* tv_param)
  31 {
  32     return new_handle();
  33 }
  34
  35 /* initialisation */
  36 static int init(priv_t *priv)
  37 {
  38     priv->width = 320;
  39     priv->height = 200;
  40     return 1;
  41 }
  42
  43 /* that's the real start, we'got the format parameters (checked with control) */
  44 static int start(priv_t *priv)
  45 {
  46     return 1;
  47 }
  48
  49 static int uninit(priv_t *priv)
  50 {
  51     return 1;
  52 }
  53
  54 static int control(priv_t *priv, int cmd, void *arg)
  55 {
  56     switch(cmd)
  57     {
  58         case TVI_CONTROL_IS_VIDEO:
  59             return TVI_CONTROL_TRUE;
  60         case TVI_CONTROL_VID_GET_FORMAT:
  61 //          *(int *)arg = IMGFMT_YV12;
  62             *(int *)arg = IMGFMT_YV12;
  63             return TVI_CONTROL_TRUE;
  64         case TVI_CONTROL_VID_SET_FORMAT:
  65         {
  66 //          int req_fmt = *(int *)arg;
  67             int req_fmt = *(int *)arg;
  68             if (req_fmt != IMGFMT_YV12)
  69                 return TVI_CONTROL_FALSE;
  70             return TVI_CONTROL_TRUE;
  71         }
  72         case TVI_CONTROL_VID_SET_WIDTH:
  73             priv->width = *(int *)arg;
  74             return TVI_CONTROL_TRUE;
  75         case TVI_CONTROL_VID_GET_WIDTH:
  76             *(int *)arg = priv->width;
  77             return TVI_CONTROL_TRUE;
  78         case TVI_CONTROL_VID_SET_HEIGHT:
  79             priv->height = *(int *)arg;
  80             return TVI_CONTROL_TRUE;
  81         case TVI_CONTROL_VID_GET_HEIGHT:
  82             *(int *)arg = priv->height;
  83             return TVI_CONTROL_TRUE;
  84         case TVI_CONTROL_VID_CHK_WIDTH:
  85         case TVI_CONTROL_VID_CHK_HEIGHT:
  86             return TVI_CONTROL_TRUE;
  87         case TVI_CONTROL_TUN_SET_NORM:
  88             return TVI_CONTROL_TRUE;
  89     }
  90     return TVI_CONTROL_UNKNOWN;
  91 }
  92
  93 static double grab_video_frame(priv_t *priv, char *buffer, int len)
  94 {
  95     memset(buffer, 0x42, len);
  96     return 1;
  97 }
  98
  99 static int get_video_framesize(priv_t *priv)
 100 {
 101     /* YV12 */
 102     return priv->width * priv->height * 12 / 8;
 103 }
 104
 105 static double grab_audio_frame(priv_t *priv, char *buffer, int len)
 106 {
 107     memset(buffer, 0x42, len);
 108     return 1;
 109 }
 110
 111 static int get_audio_framesize(priv_t *priv)
 112 {
 113     return 1;
 114 }