int, int );
static void BlendYUY2( filter_t *, picture_t *, picture_t *, picture_t *,
int, int );
-static void BlendPalette( filter_t *, picture_t *, picture_t *, picture_t *,
+static void BlendPalI420( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int );
+static void BlendPalYUY2( filter_t *, picture_t *, picture_t *, picture_t *,
int, int );
/*****************************************************************************
( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('I','4','2','0') ||
p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','1','2') ) )
{
- BlendPalette( p_filter, p_dst, p_dst_orig, p_src,
+ BlendPalI420( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset );
+ return;
+ }
+ if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','U','V','P') &&
+ p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
+ {
+ BlendPalYUY2( p_filter, p_dst, p_dst_orig, p_src,
i_x_offset, i_y_offset );
return;
}
if( !p_trans[i_x] )
{
/* Completely transparent. Don't change pixel */
- continue;
}
else if( p_trans[i_x] == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
p_dst[i_x * 2] = p_src2_y[i_x];
p_dst[i_x * 2 + 1] = p_src2_u[i_x];
- p_dst[i_x * 2 + 2] = p_src2_y[i_x + 1];
- p_dst[i_x * 2 + 3] = p_src2_v[i_x + 1];
- continue;
+ p_dst[i_x * 2 + 3] = p_src2_v[i_x];
+ }
+ else
+ {
+ /* Blending */
+ p_dst[i_x * 2] = ( (uint16_t)p_src2_y[i_x] * p_trans[i_x] +
+ (uint16_t)p_src1[i_x * 2] *
+ (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
+ p_dst[i_x * 2 + 1] = ( (uint16_t)p_src2_u[i_x] * p_trans[i_x] +
+ (uint16_t)p_src1[i_x * 2 + 1] *
+ (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
+ p_dst[i_x * 2 + 3] = ( (uint16_t)p_src2_v[i_x] * p_trans[i_x] +
+ (uint16_t)p_src1[i_x * 2 + 3] *
+ (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
}
- /* Blending */
- p_dst[i_x * 2] = ( (uint16_t)p_src2_y[i_x] * p_trans[i_x] +
- (uint16_t)p_src1[i_x * 2] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 1] = ( (uint16_t)p_src2_u[i_x] * p_trans[i_x] +
- (uint16_t)p_src1[i_x * 2 + 1] *
- (MAX_TRANS - p_trans[i_x]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 2] = ( (uint16_t)p_src2_y[i_x+1] * p_trans[i_x+1] +
- (uint16_t)p_src1[i_x * 2 + 2] *
- (MAX_TRANS - p_trans[i_x+1]) ) >> TRANS_BITS;
- p_dst[i_x * 2 + 3] = ( (uint16_t)p_src2_v[i_x+1] * p_trans[i_x+1] +
- (uint16_t)p_src1[i_x * 2 + 3] *
- (MAX_TRANS - p_trans[i_x+1]) ) >> TRANS_BITS;
+ if( !p_trans[i_x+1] )
+ {
+ /* Completely transparent. Don't change pixel */
+ }
+ else if( p_trans[i_x+1] == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_dst[i_x * 2 + 2] = p_src2_y[i_x + 1];
+ }
+ else
+ {
+ /* Blending */
+ p_dst[i_x * 2 + 2] = ( (uint16_t)p_src2_y[i_x+1] *
+ p_trans[i_x+1] + (uint16_t)p_src1[i_x * 2 + 2] *
+ (MAX_TRANS - p_trans[i_x+1]) ) >> TRANS_BITS;
+ }
}
}
return;
}
-static void BlendPalette( filter_t *p_filter, picture_t *p_dst,
+static void BlendPalI420( filter_t *p_filter, picture_t *p_dst,
picture_t *p_dst_orig, picture_t *p_src,
int i_x_offset, int i_y_offset )
{
return;
}
+static void BlendPalYUY2( filter_t *p_filter, picture_t *p_dst_pic,
+ picture_t *p_dst_orig, picture_t *p_src,
+ int i_x_offset, int i_y_offset )
+{
+ filter_sys_t *p_sys = p_filter->p_sys;
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_src1, *p_src2, *p_dst;
+ int i_width, i_height, i_x, i_y, i_pix_pitch;
+
+ i_pix_pitch = 2;
+ i_dst_pitch = p_dst_pic->p->i_pitch;
+ p_dst = p_dst_pic->p->p_pixels + i_pix_pitch * (i_x_offset +
+ p_filter->fmt_out.video.i_x_offset) + p_dst_pic->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src1_pitch = p_dst_orig->p->i_pitch;
+ p_src1 = p_dst_orig->p->p_pixels + i_pix_pitch * (i_x_offset +
+ p_filter->fmt_out.video.i_x_offset) + p_dst_orig->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src2_pitch = p_src->p->i_pitch;
+ p_src2 = p_src->p->p_pixels + p_filter->fmt_in.video.i_x_offset +
+ i_src2_pitch * p_filter->fmt_in.video.i_y_offset;
+
+ i_width = __MIN( p_filter->fmt_out.video.i_visible_width - i_x_offset,
+ p_filter->fmt_in.video.i_visible_width );
+
+ i_height = __MIN( p_filter->fmt_out.video.i_visible_height - i_y_offset,
+ p_filter->fmt_in.video.i_visible_height );
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+#define p_trans p_src2
+#define p_pal p_filter->fmt_in.video.p_palette->palette
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++,
+ p_dst += i_dst_pitch, p_src1 += i_src1_pitch, p_src2 += i_src2_pitch )
+ {
+ /* Draw until we reach the end of the line */
+ for( i_x = 0; i_x < i_width; i_x += 2 )
+ {
+ if( !p_pal[p_trans[i_x]][3] )
+ {
+ /* Completely transparent. Don't change pixel */
+ }
+ else if( p_pal[p_trans[i_x]][3] == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_dst[i_x * 2] = p_pal[p_src2[i_x]][0];
+ p_dst[i_x * 2 + 1] = p_pal[p_src2[i_x]][1];
+ p_dst[i_x * 2 + 3] = p_pal[p_src2[i_x]][2];
+ }
+ else
+ {
+ /* Blending */
+ p_dst[i_x * 2] = ( (uint16_t)p_pal[p_src2[i_x]][0] *
+ p_pal[p_trans[i_x]][3] + (uint16_t)p_src1[i_x * 2] *
+ (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ p_dst[i_x * 2 + 1] = ( (uint16_t)p_pal[p_src2[i_x]][1] *
+ p_pal[p_trans[i_x]][3] + (uint16_t)p_src1[i_x * 2 + 1] *
+ (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ p_dst[i_x * 2 + 3] = ( (uint16_t)p_pal[p_src2[i_x]][2] *
+ p_pal[p_trans[i_x]][3] + (uint16_t)p_src1[i_x * 2 + 3] *
+ (MAX_TRANS - p_pal[p_trans[i_x]][3]) ) >> TRANS_BITS;
+ }
+
+ if( !p_pal[p_trans[i_x+1]][3] )
+ {
+ /* Completely transparent. Don't change pixel */
+ }
+ else if( p_pal[p_trans[i_x+1]][3] == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_dst[i_x * 2 + 2] = p_pal[p_src2[i_x + 1]][0];
+ }
+ else
+ {
+ /* Blending */
+ p_dst[i_x * 2 + 2] = ( (uint16_t)p_pal[p_src2[i_x+1]][0] *
+ p_pal[p_trans[i_x+1]][3] + (uint16_t)p_src1[i_x * 2 + 2] *
+ (MAX_TRANS - p_pal[p_trans[i_x+1]][3]) ) >> TRANS_BITS;
+ }
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+#undef p_trans
+#undef p_pal
+
+ return;
+}
+
/*****************************************************************************
* CloseFilter: clean up the filter
*****************************************************************************/