stream/tvi_def.h

   1 #ifndef MPLAYER_TVI_DEF_H
   2 #define MPLAYER_TVI_DEF_H
   3
   4 #include <stdlib.h> /* malloc */
   5 #include <string.h> /* memset */
   6 #include "libmpcodecs/img_format.h"
   7 #include "tv.h"
   8
   9 static int init(priv_t *priv);
  10 static int uninit(priv_t *priv);
  11 static int control(priv_t *priv, int cmd, void *arg);
  12 static int start(priv_t *priv);
  13 static double grab_video_frame(priv_t *priv, char *buffer, int len);
  14 static int get_video_framesize(priv_t *priv);
  15 static double grab_audio_frame(priv_t *priv, char *buffer, int len);
  16 static int get_audio_framesize(priv_t *priv);
  17
  18 int teletext_control(void* p, int cmd, void *arg);
  19
  20 static const tvi_functions_t functions =
  21 {
  22     init,
  23     uninit,
  24     control,
  25     start,
  26     grab_video_frame,
  27     get_video_framesize,
  28     grab_audio_frame,
  29     get_audio_framesize
  30 };
  31
  32 static tvi_handle_t *new_handle(void)
  33 {
  34     tvi_handle_t *h = (tvi_handle_t *)malloc(sizeof(tvi_handle_t));
  35
  36     if (!h)
  37         return NULL;
  38     h->priv = (priv_t *)malloc(sizeof(priv_t));
  39     if (!h->priv)
  40     {
  41         free(h);
  42         return NULL;
  43     }
  44     memset(h->priv, 0, sizeof(priv_t));
  45     h->functions = &functions;
  46     h->seq = 0;
  47     h->chanlist = -1;
  48     h->chanlist_s = NULL;
  49     h->norm = -1;
  50     h->channel = -1;
  51     h->scan = NULL;
  52     return h;
  53 }
  54
  55 static void free_handle(tvi_handle_t *h)
  56 {
  57     if (h) {
  58         if (h->priv)
  59             free(h->priv);
  60         if (h->scan)
  61             free(h->scan);
  62         free(h);
  63     }
  64 }
  65
  66 /**
  67  Fills video frame in given buffer with blue color for yv12,i420,uyvy,yuy2.
  68  Other formats will be filled with 0xC0
  69 */
  70 static inline void fill_blank_frame(char* buffer,int len,int fmt){
  71     int i;
  72     // RGB(0,0,255) <-> YVU(41,110,240)
  73
  74     switch(fmt){
  75     case IMGFMT_YV12:
  76         memset(buffer, 41,4*len/6);       //Y
  77         memset(buffer+4*len/6, 110,len/6);//V
  78         memset(buffer+5*len/6, 240,len/6);//U
  79         break;
  80     case IMGFMT_I420:
  81         memset(buffer, 41,4*len/6);       //Y
  82         memset(buffer+4*len/6, 240,len/6);//U
  83         memset(buffer+5*len/6, 110,len/6);//V
  84         break;
  85     case IMGFMT_UYVY:
  86         for(i=0;i<len;i+=4){
  87             buffer[i]=0xFF;
  88             buffer[i+1]=0;
  89             buffer[i+2]=0;
  90             buffer[i+3]=0;
  91         }
  92         break;
  93     case IMGFMT_YUY2:
  94         for(i=0;i<len;i+=4){
  95             buffer[i]=0;
  96             buffer[i+1]=0xFF;
  97             buffer[i+2]=0;
  98             buffer[i+3]=0;
  99         }
 100         break;
 101     case IMGFMT_MJPEG:
 102         /*
 103         This is compressed format. I don't know yet how to fill such frame with blue color.
 104         Keeping frame unchanged.
 105         */
 106         break;
 107     default:
 108         memset(buffer,0xC0,len);
 109     }
 110 }
 111
 112 #endif /* MPLAYER_TVI_DEF_H */