src/modules/engines/direct3d/evas_direct3d_buffer.c

   1 #include <string.h>
   2
   3 #include "evas_engine.h"
   4
   5
   6 Direct3D_Output_Buffer *
   7 evas_direct3d_output_buffer_new(int   depth,
   8                                 int   width,
   9                                 int   height,
  10                                 void *data)
  11 {
  12    Direct3D_Output_Buffer *d3dob;
  13
  14    d3dob = calloc(1, sizeof(Direct3D_Output_Buffer));
  15    if (!d3dob) return NULL;
  16
  17    d3dob->image = data;
  18    d3dob->depth = depth;
  19    d3dob->width = width;
  20    d3dob->height = height;
  21    d3dob->pitch = width * (depth >> 3);
  22
  23    if (!d3dob->image)
  24      {
  25         d3dob->image = malloc(d3dob->pitch * height);
  26         if (!d3dob->image)
  27           {
  28             free(d3dob);
  29             return NULL;
  30           }
  31      }
  32
  33    return d3dob;
  34 }
  35
  36 void
  37 evas_direct3d_output_buffer_free(Direct3D_Output_Buffer *d3dob)
  38 {
  39   if (d3dob->image) free(d3dob->image);
  40   free(d3dob);
  41 }
  42
  43 void
  44 evas_direct3d_output_buffer_paste(Direct3D_Output_Buffer *d3dob,
  45                                   DATA8                  *d3d_data,
  46                                   int                     d3d_width,
  47                                   int                     d3d_height,
  48                                   int                     d3d_pitch,
  49                                   int                     x,
  50                                   int                     y)
  51 {
  52    DATA8         *evas_data;
  53    int            width;
  54    int            height;
  55    int            pitch;
  56    int            j;
  57
  58    if ((x >= d3d_width) || (y >= d3d_height))
  59      return;
  60
  61    /* compute the size of the data to copy on the back surface */
  62    width = ((x + d3dob->width) > d3d_width)
  63      ? d3d_width - x
  64      : d3dob->width;
  65    height = ((y + d3dob->height) > d3d_height)
  66      ? d3d_height - y
  67      : d3dob->height;
  68    pitch = width * (d3dob->depth >> 3);
  69
  70    d3d_data += y * d3d_pitch + x * (d3dob->depth >> 3);
  71    evas_data = (unsigned char *)d3dob->image;
  72    for (j = 0; j < height; j++, evas_data += d3dob->pitch, d3d_data += d3d_pitch)
  73      memcpy(d3d_data, evas_data, pitch);
  74 }
  75
  76 DATA8 *
  77 evas_direct3d_output_buffer_data(Direct3D_Output_Buffer *d3dob,
  78                                  int                    *bytes_per_line_ret)
  79 {
  80    if (bytes_per_line_ret) *bytes_per_line_ret = d3dob->pitch;
  81    return d3dob->image;
  82 }
  83
  84 int
  85 evas_direct3d_output_buffer_depth(Direct3D_Output_Buffer *d3dob)
  86 {
  87    return d3dob->depth;
  88 }