static void BlendYUVPacked( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
+/* I420, YV12 */
+static void BlendI420I420( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
+static void BlendI420I420_no_alpha(
+ filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int );
+static void BlendI420R16( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
+static void BlendI420R24( filter_t *, picture_t *, picture_t *, picture_t *,
+ int, int, int, int, int );
+static void BlendI420YUVPacked( filter_t *, picture_t *, picture_t *,
+ picture_t *, int, int, int, int, int );
+
/* YUVP */
static void BlendPalI420( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
/* RGBA */
static void BlendRGBAI420( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
+static void BlendRGBAYUVPacked( filter_t *, picture_t *, picture_t *,
+ picture_t *, int, int, int, int, int );
static void BlendRGBAR16( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
static void BlendRGBAR24( filter_t *, picture_t *, picture_t *, picture_t *,
* We could try to use a chroma filter if we can't. */
int in_chroma = p_filter->fmt_in.video.i_chroma;
int out_chroma = p_filter->fmt_out.video.i_chroma;
- if(
- ( ( in_chroma != VLC_FOURCC('Y','U','V','A') &&
- in_chroma != VLC_FOURCC('Y','U','V','P') ) ||
+ if( ( in_chroma != VLC_FOURCC('Y','U','V','A') &&
+ in_chroma != VLC_FOURCC('I','4','2','0') &&
+ in_chroma != VLC_FOURCC('Y','V','1','2') &&
+ in_chroma != VLC_FOURCC('Y','U','V','P') &&
+ in_chroma != VLC_FOURCC('R','G','B','A') ) ||
( out_chroma != VLC_FOURCC('I','4','2','0') &&
out_chroma != VLC_FOURCC('Y','U','Y','2') &&
out_chroma != VLC_FOURCC('Y','V','1','2') &&
out_chroma != VLC_FOURCC('R','V','1','6') &&
out_chroma != VLC_FOURCC('R','V','2','4') &&
out_chroma != VLC_FOURCC('R','V','3','2') ) )
- &&
- ( ( in_chroma != VLC_FOURCC('R','G','B','A') ) ||
- ( out_chroma != VLC_FOURCC('I','4','2','0') &&
- out_chroma != VLC_FOURCC('Y','V','1','2') &&
- out_chroma != VLC_FOURCC('R','V','1','6') &&
- out_chroma != VLC_FOURCC('R','V','2','4') &&
- out_chroma != VLC_FOURCC('R','V','3','2' ) ) )
- )
{
return VLC_EGENERIC;
}
{
int i_width, i_height;
+ if( i_alpha == 0 ) return;
+
i_width = __MIN((int)p_filter->fmt_out.video.i_visible_width - i_x_offset,
(int)p_filter->fmt_in.video.i_visible_width);
i_width, i_height, i_alpha );
return;
}
+ case VLC_FOURCC('Y','V','1','2'):
+ case VLC_FOURCC('I','4','2','0'):
+ switch( p_filter->fmt_out.video.i_chroma )
+ {
+ case VLC_FOURCC('I','4','2','0'):
+ case VLC_FOURCC('Y','V','1','2'):
+ if( i_alpha == 0xff )
+ BlendI420I420_no_alpha(
+ p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height );
+ else
+ BlendI420I420( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ case VLC_FOURCC('Y','U','Y','2'):
+ case VLC_FOURCC('U','Y','V','Y'):
+ case VLC_FOURCC('Y','V','Y','U'):
+ BlendI420YUVPacked( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ case VLC_FOURCC('R','V','1','6'):
+ BlendI420R16( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ case VLC_FOURCC('R','V','2','4'):
+ case VLC_FOURCC('R','V','3','2'):
+ BlendI420R24( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
+ }
case VLC_FOURCC('R','G','B','A'):
switch( p_filter->fmt_out.video.i_chroma )
{
i_x_offset, i_y_offset,
i_width, i_height, i_alpha );
return;
+ case VLC_FOURCC('Y','U','Y','2'):
+ case VLC_FOURCC('U','Y','V','Y'):
+ case VLC_FOURCC('Y','V','Y','U'):
+ BlendRGBAYUVPacked( p_filter, p_dst, p_dst_orig, p_src,
+ i_x_offset, i_y_offset,
+ i_width, i_height, i_alpha );
+ return;
case VLC_FOURCC('R','V','2','4'):
case VLC_FOURCC('R','V','3','2'):
BlendRGBAR24( p_filter, p_dst, p_dst_orig, p_src,
uint8_t *p_src1_u, *p_src2_u, *p_dst_u;
uint8_t *p_src1_v, *p_src2_v, *p_dst_v;
uint8_t *p_trans;
- int i_x, i_y, i_trans;
+ int i_x, i_y, i_trans = 0;
vlc_bool_t b_even_scanline = i_y_offset % 2;
i_dst_pitch = p_dst->p[Y_PLANE].i_pitch;
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( p_trans )
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
if( !i_trans )
{
/* Completely transparent. Don't change pixel */
/* Completely opaque. Completely overwrite underlying pixel */
p_dst_y[i_x] = p_src2_y[i_x];
- if( b_even_scanline && i_x % 2 == 0 )
- {
- p_dst_u[i_x/2] = p_src2_u[i_x];
- p_dst_v[i_x/2] = p_src2_v[i_x];
- }
- continue;
- }
+ if( b_even_scanline && i_x % 2 == 0 )
+ {
+ p_dst_u[i_x/2] = p_src2_u[i_x];
+ p_dst_v[i_x/2] = p_src2_v[i_x];
+ }
+ continue;
+ }
+
+ /* Blending */
+ p_dst_y[i_x] = ( (uint16_t)p_src2_y[i_x] * i_trans +
+ (uint16_t)p_src1_y[i_x] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+
+ if( b_even_scanline && i_x % 2 == 0 )
+ {
+ p_dst_u[i_x/2] = ( (uint16_t)p_src2_u[i_x] * i_trans +
+ (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst_v[i_x/2] = ( (uint16_t)p_src2_v[i_x] * i_trans +
+ (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ }
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
+
+static void BlendR16( 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,
+ int i_width, int i_height, int i_alpha )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_dst, *p_src1, *p_src2_y;
+ uint8_t *p_src2_u, *p_src2_v;
+ uint8_t *p_trans;
+ int i_x, i_y, i_pix_pitch, i_trans = 0;
+ int r, g, b;
+
+ i_pix_pitch = p_dst_pic->p->i_pixel_pitch;
+ i_dst_pitch = p_dst_pic->p->i_pitch;
+ p_dst = p_dst_pic->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_pic->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1 = p_dst_orig->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_orig->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src2_pitch = p_src->p[Y_PLANE].i_pitch;
+ p_src2_y = p_src->p[Y_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[Y_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+ p_src2_u = p_src->p[U_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[U_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+ p_src2_v = p_src->p[V_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+
+ p_trans = p_src->p[A_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ p_dst += i_dst_pitch, p_src1 += i_src1_pitch,
+ p_src2_y += i_src2_pitch, p_src2_u += i_src2_pitch,
+ p_src2_v += i_src2_pitch )
+ {
+ /* Draw until we reach the end of the line */
+ for( i_x = 0; i_x < i_width; i_x++ )
+ {
+ if( p_trans )
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( !i_trans )
+ {
+ /* Completely transparent. Don't change pixel */
+ continue;
+ }
+ else if( i_trans == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ yuv_to_rgb( &r, &g, &b,
+ p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+
+ ((uint16_t *)(&p_dst[i_x * i_pix_pitch]))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
+ continue;
+ }
+
+ /* Blending */
+ /* FIXME: do the blending */
+ yuv_to_rgb( &r, &g, &b,
+ p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+
+ ((uint16_t *)(&p_dst[i_x * i_pix_pitch]))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
+
+static void BlendR24( 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,
+ int i_width, int i_height, int i_alpha )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_dst, *p_src1, *p_src2_y;
+ uint8_t *p_src2_u, *p_src2_v;
+ uint8_t *p_trans;
+ int i_x, i_y, i_pix_pitch, i_trans = 0;
+ int r, g, b;
+
+ i_pix_pitch = p_dst_pic->p->i_pixel_pitch;
+ i_dst_pitch = p_dst_pic->p->i_pitch;
+ p_dst = p_dst_pic->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_pic->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1 = p_dst_orig->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_orig->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src2_pitch = p_src->p[Y_PLANE].i_pitch;
+ p_src2_y = p_src->p[Y_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[Y_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+ p_src2_u = p_src->p[U_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[U_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+ p_src2_v = p_src->p[V_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+
+ p_trans = p_src->p[A_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ p_dst += i_dst_pitch, p_src1 += i_src1_pitch,
+ p_src2_y += i_src2_pitch, p_src2_u += i_src2_pitch,
+ p_src2_v += i_src2_pitch )
+ {
+ /* Draw until we reach the end of the line */
+ for( i_x = 0; i_x < i_width; i_x++ )
+ {
+ if( p_trans )
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( !i_trans )
+ {
+ /* Completely transparent. Don't change pixel */
+ continue;
+ }
+ else if( i_trans == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ yuv_to_rgb( &r, &g, &b,
+ p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+
+ p_dst[i_x * i_pix_pitch] = r;
+ p_dst[i_x * i_pix_pitch + 1] = g;
+ p_dst[i_x * i_pix_pitch + 2] = b;
+ continue;
+ }
+
+ /* Blending */
+ yuv_to_rgb( &r, &g, &b,
+ p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+
+ p_dst[i_x * i_pix_pitch] = ( r * i_trans +
+ (uint16_t)p_src1[i_x * i_pix_pitch] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ p_dst[i_x * i_pix_pitch + 1] = ( g * i_trans +
+ (uint16_t)p_src1[i_x * i_pix_pitch + 1] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ p_dst[i_x * i_pix_pitch + 2] = ( b * i_trans +
+ (uint16_t)p_src1[i_x * i_pix_pitch + 2] *
+ (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
+
+static void BlendYUVPacked( 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,
+ int i_width, int i_height, int i_alpha )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_dst, *p_src1, *p_src2_y;
+ uint8_t *p_src2_u, *p_src2_v;
+ uint8_t *p_trans;
+ int i_x, i_y, i_pix_pitch, i_trans = 0;
+ vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
+ int i_l_offset = 0, i_u_offset = 0, i_v_offset = 0;
+
+ if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 1;
+ i_v_offset = 3;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('U','Y','V','Y') )
+ {
+ i_l_offset = 1;
+ i_u_offset = 0;
+ i_v_offset = 2;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','Y','U') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 3;
+ i_v_offset = 1;
+ }
+
+ i_pix_pitch = 2;
+ i_dst_pitch = p_dst_pic->p->i_pitch;
+ p_dst = p_dst_pic->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_pic->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1 = p_dst_orig->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_orig->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src2_pitch = p_src->p[Y_PLANE].i_pitch;
+ p_src2_y = p_src->p[Y_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[Y_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+ p_src2_u = p_src->p[U_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[U_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+ p_src2_v = p_src->p[V_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+
+ p_trans = p_src->p[A_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+
+ i_width = (i_width >> 1) << 1; /* Needs to be a multiple of 2 */
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ p_dst += i_dst_pitch, p_src1 += i_src1_pitch,
+ p_src2_y += i_src2_pitch, p_src2_u += i_src2_pitch,
+ p_src2_v += i_src2_pitch )
+ {
+ /* Draw until we reach the end of the line */
+ for( i_x = 0; i_x < i_width; i_x++, b_even = !b_even )
+ {
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ if( !i_trans )
+ {
+ /* Completely transparent. Don't change pixel */
+ }
+ else if( i_trans == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_dst[i_x * 2 + i_l_offset] = p_src2_y[i_x];
+
+ if( b_even )
+ {
+ if( p_trans[i_x+1] > 0xaa )
+ {
+ p_dst[i_x * 2 + i_u_offset] = (p_src2_u[i_x]+p_src2_u[i_x+1])>>1;
+ p_dst[i_x * 2 + i_v_offset] = (p_src2_v[i_x]+p_src2_v[i_x+1])>>1;
+ }
+ else
+ {
+ p_dst[i_x * 2 + i_u_offset] = p_src2_u[i_x];
+ p_dst[i_x * 2 + i_v_offset] = p_src2_v[i_x];
+ }
+ }
+ }
+ else
+ {
+ /* Blending */
+ p_dst[i_x * 2 + i_l_offset] = ( (uint16_t)p_src2_y[i_x] * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_l_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+
+ if( b_even )
+ {
+ uint16_t i_u = 0;
+ uint16_t i_v = 0;
+ if( p_trans[i_x+1] > 0xaa )
+ {
+ i_u = (p_src2_u[i_x]+p_src2_u[i_x+1])>>1;
+ i_v = (p_src2_v[i_x]+p_src2_v[i_x+1])>>1;
+ }
+ else
+ {
+ i_u = p_src2_u[i_x];
+ i_v = p_src2_v[i_x];
+ }
+ p_dst[i_x * 2 + i_u_offset] = ( (uint16_t)i_u * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_u_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst[i_x * 2 + i_v_offset] = ( (uint16_t)i_v * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_v_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ }
+ }
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
+/***********************************************************************
+ * I420, YV12
+ ***********************************************************************/
+static void BlendI420I420( 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,
+ int i_width, int i_height, int i_alpha )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_src1_y, *p_src2_y, *p_dst_y;
+ uint8_t *p_src1_u, *p_src2_u, *p_dst_u;
+ uint8_t *p_src1_v, *p_src2_v, *p_dst_v;
+ int i_x, i_y;
+ vlc_bool_t b_even_scanline = i_y_offset % 2;
+
+ i_dst_pitch = p_dst->p[Y_PLANE].i_pitch;
+ p_dst_y = p_dst->p[Y_PLANE].p_pixels + i_x_offset +
+ p_filter->fmt_out.video.i_x_offset +
+ p_dst->p[Y_PLANE].i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+ p_dst_u = p_dst->p[U_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst->p[U_PLANE].i_pitch;
+ p_dst_v = p_dst->p[V_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst->p[V_PLANE].i_pitch;
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1_y = p_dst_orig->p[Y_PLANE].p_pixels + i_x_offset +
+ p_filter->fmt_out.video.i_x_offset +
+ p_dst_orig->p[Y_PLANE].i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+ p_src1_u = p_dst_orig->p[U_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst_orig->p[U_PLANE].i_pitch;
+ p_src1_v = p_dst_orig->p[V_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst_orig->p[V_PLANE].i_pitch;
+
+ i_src2_pitch = p_src->p[Y_PLANE].i_pitch;
+ p_src2_y = p_src->p[Y_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[Y_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+ p_src2_u = p_src->p[U_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[U_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+ p_src2_v = p_src->p[V_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++,
+ p_dst_y += i_dst_pitch, p_src1_y += i_src1_pitch,
+ p_src2_y += i_src2_pitch )
+ {
+ if( b_even_scanline )
+ {
+ p_dst_u += i_dst_pitch/2;
+ p_dst_v += i_dst_pitch/2;
+ p_src1_u += i_src1_pitch/2;
+ p_src1_v += i_src1_pitch/2;
+ }
+ b_even_scanline = !b_even_scanline;
+
+ /* Draw until we reach the end of the line */
+ for( i_x = 0; i_x < i_width; i_x++ )
+ {
+ if( i_alpha == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_dst_y[i_x] = p_src2_y[i_x];
+
+ if( b_even_scanline && i_x % 2 == 0 )
+ {
+ p_dst_u[i_x/2] = p_src2_u[i_x/2];
+ p_dst_v[i_x/2] = p_src2_v[i_x/2];
+ }
+ continue;
+ }
+
+ /* Blending */
+ p_dst_y[i_x] = ( (uint16_t)p_src2_y[i_x] * i_alpha +
+ (uint16_t)p_src1_y[i_x] * (MAX_TRANS - i_alpha) )
+ >> TRANS_BITS;
+
+ if( b_even_scanline && i_x % 2 == 0 )
+ {
+ p_dst_u[i_x/2] = ( (uint16_t)p_src2_u[i_x/2] * i_alpha +
+ (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - i_alpha) )
+ >> TRANS_BITS;
+ p_dst_v[i_x/2] = ( (uint16_t)p_src2_v[i_x/2] * i_alpha +
+ (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - i_alpha) )
+ >> TRANS_BITS;
+ }
+ }
+ if( i_y%2 == 1 )
+ {
+ p_src2_u += i_src2_pitch/2;
+ p_src2_v += i_src2_pitch/2;
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
+static void BlendI420I420_no_alpha( 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,
+ int i_width, int i_height )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch;
+ uint8_t *p_src1_y, *p_src2_y, *p_dst_y;
+ uint8_t *p_src1_u, *p_src2_u, *p_dst_u;
+ uint8_t *p_src1_v, *p_src2_v, *p_dst_v;
+ int i_y;
+ vlc_bool_t b_even_scanline = i_y_offset % 2;
+
+ i_dst_pitch = p_dst->p[Y_PLANE].i_pitch;
+ p_dst_y = p_dst->p[Y_PLANE].p_pixels + i_x_offset +
+ p_filter->fmt_out.video.i_x_offset +
+ p_dst->p[Y_PLANE].i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+ p_dst_u = p_dst->p[U_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst->p[U_PLANE].i_pitch;
+ p_dst_v = p_dst->p[V_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst->p[V_PLANE].i_pitch;
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1_y = p_dst_orig->p[Y_PLANE].p_pixels + i_x_offset +
+ p_filter->fmt_out.video.i_x_offset +
+ p_dst_orig->p[Y_PLANE].i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+ p_src1_u = p_dst_orig->p[U_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst_orig->p[U_PLANE].i_pitch;
+ p_src1_v = p_dst_orig->p[V_PLANE].p_pixels + i_x_offset/2 +
+ p_filter->fmt_out.video.i_x_offset/2 +
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset ) / 2 *
+ p_dst_orig->p[V_PLANE].i_pitch;
+
+ i_src2_pitch = p_src->p[Y_PLANE].i_pitch;
+ p_src2_y = p_src->p[Y_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset +
+ p_src->p[Y_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
+ p_src2_u = p_src->p[U_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[U_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
+ p_src2_v = p_src->p[V_PLANE].p_pixels +
+ p_filter->fmt_in.video.i_x_offset/2 +
+ p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
- /* Blending */
- p_dst_y[i_x] = ( (uint16_t)p_src2_y[i_x] * i_trans +
- (uint16_t)p_src1_y[i_x] * (MAX_TRANS - i_trans) )
- >> TRANS_BITS;
+ i_width &= ~1;
- if( b_even_scanline && i_x % 2 == 0 )
- {
- p_dst_u[i_x/2] = ( (uint16_t)p_src2_u[i_x] * i_trans +
- (uint16_t)p_src1_u[i_x/2] * (MAX_TRANS - i_trans) )
- >> TRANS_BITS;
- p_dst_v[i_x/2] = ( (uint16_t)p_src2_v[i_x] * i_trans +
- (uint16_t)p_src1_v[i_x/2] * (MAX_TRANS - i_trans) )
- >> TRANS_BITS;
- }
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++,
+ p_dst_y += i_dst_pitch, p_src1_y += i_src1_pitch,
+ p_src2_y += i_src2_pitch )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ p_filter->p_libvlc->pf_memcpy( p_dst_y, p_src2_y, i_width );
+ if( b_even_scanline )
+ {
+ p_dst_u += i_dst_pitch/2;
+ p_dst_v += i_dst_pitch/2;
+ p_src1_u += i_src1_pitch/2;
+ p_src1_v += i_src1_pitch/2;
+ }
+ else
+ {
+ p_filter->p_libvlc->pf_memcpy( p_dst_u, p_src2_u, i_width/2 );
+ p_filter->p_libvlc->pf_memcpy( p_dst_v, p_src2_v, i_width/2 );
+ }
+ b_even_scanline = !b_even_scanline;
+ if( i_y%2 == 1 )
+ {
+ p_src2_u += i_src2_pitch/2;
+ p_src2_v += i_src2_pitch/2;
}
}
-#undef MAX_TRANS
-#undef TRANS_BITS
-
return;
}
-static void BlendR16( 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,
- int i_width, int i_height, int i_alpha )
+static void BlendI420R16( 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,
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_dst, *p_src1, *p_src2_y;
uint8_t *p_src2_u, *p_src2_v;
- uint8_t *p_trans;
int i_x, i_y, i_pix_pitch;
int r, g, b;
p_filter->fmt_in.video.i_x_offset/2 +
p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
- p_trans = p_src->p[A_PLANE].p_pixels +
- p_filter->fmt_in.video.i_x_offset +
- p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
-
#define MAX_TRANS 255
#define TRANS_BITS 8
/* Draw until we reach the bottom of the subtitle */
- for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ for( i_y = 0; i_y < i_height; i_y++,
p_dst += i_dst_pitch, p_src1 += i_src1_pitch,
- p_src2_y += i_src2_pitch, p_src2_u += i_src2_pitch,
- p_src2_v += i_src2_pitch )
+ p_src2_y += i_src2_pitch )
{
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- if( !p_trans[i_x] )
- {
- /* Completely transparent. Don't change pixel */
- continue;
- }
- else if( p_trans[i_x] == MAX_TRANS )
+ if( i_alpha == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
yuv_to_rgb( &r, &g, &b,
- p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+ p_src2_y[i_x], p_src2_u[i_x/2], p_src2_v[i_x/2] );
((uint16_t *)(&p_dst[i_x * i_pix_pitch]))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
continue;
}
/* Blending */
+ /* FIXME: do the blending */
yuv_to_rgb( &r, &g, &b,
- p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+ p_src2_y[i_x], p_src2_u[i_x/2], p_src2_v[i_x/2] );
((uint16_t *)(&p_dst[i_x * i_pix_pitch]))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
}
+ if( i_y%2 == 1 )
+ {
+ p_src2_u += i_src2_pitch/2;
+ p_src2_v += i_src2_pitch/2;
+ }
}
#undef MAX_TRANS
return;
}
-static void BlendR24( 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,
- int i_width, int i_height, int i_alpha )
+static void BlendI420R24( 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,
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_dst, *p_src1, *p_src2_y;
uint8_t *p_src2_u, *p_src2_v;
- uint8_t *p_trans;
- int i_x, i_y, i_pix_pitch, i_trans;
+ int i_x, i_y, i_pix_pitch;
int r, g, b;
i_pix_pitch = p_dst_pic->p->i_pixel_pitch;
p_filter->fmt_in.video.i_x_offset/2 +
p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
- p_trans = p_src->p[A_PLANE].p_pixels +
- p_filter->fmt_in.video.i_x_offset +
- p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
-
#define MAX_TRANS 255
#define TRANS_BITS 8
/* Draw until we reach the bottom of the subtitle */
- for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ for( i_y = 0; i_y < i_height; i_y++,
p_dst += i_dst_pitch, p_src1 += i_src1_pitch,
p_src2_y += i_src2_pitch, p_src2_u += i_src2_pitch,
p_src2_v += i_src2_pitch )
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++ )
{
- i_trans = ( p_trans[i_x] * i_alpha ) / 255;
- if( !i_trans )
- {
- /* Completely transparent. Don't change pixel */
- continue;
- }
- else if( i_trans == MAX_TRANS )
+ if( i_alpha == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
yuv_to_rgb( &r, &g, &b,
- p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+ p_src2_y[i_x], p_src2_u[i_x/2], p_src2_v[i_x/2] );
p_dst[i_x * i_pix_pitch] = r;
p_dst[i_x * i_pix_pitch + 1] = g;
/* Blending */
yuv_to_rgb( &r, &g, &b,
- p_src2_y[i_x], p_src2_u[i_x], p_src2_v[i_x] );
+ p_src2_y[i_x], p_src2_u[i_x/2], p_src2_v[i_x/2] );
- p_dst[i_x * i_pix_pitch] = ( r * i_trans +
+ p_dst[i_x * i_pix_pitch] = ( r * i_alpha +
(uint16_t)p_src1[i_x * i_pix_pitch] *
- (MAX_TRANS - i_trans) ) >> TRANS_BITS;
- p_dst[i_x * i_pix_pitch + 1] = ( g * i_trans +
+ (MAX_TRANS - i_alpha) ) >> TRANS_BITS;
+ p_dst[i_x * i_pix_pitch + 1] = ( g * i_alpha +
(uint16_t)p_src1[i_x * i_pix_pitch + 1] *
- (MAX_TRANS - i_trans) ) >> TRANS_BITS;
- p_dst[i_x * i_pix_pitch + 2] = ( b * i_trans +
+ (MAX_TRANS - i_alpha) ) >> TRANS_BITS;
+ p_dst[i_x * i_pix_pitch + 2] = ( b * i_alpha +
(uint16_t)p_src1[i_x * i_pix_pitch + 2] *
- (MAX_TRANS - i_trans) ) >> TRANS_BITS;
+ (MAX_TRANS - i_alpha) ) >> TRANS_BITS;
+ }
+ if( i_y%2 == 1 )
+ {
+ p_src2_u += i_src2_pitch/2;
+ p_src2_v += i_src2_pitch/2;
}
}
return;
}
-static void BlendYUVPacked( 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,
- int i_width, int i_height, int i_alpha )
+static void BlendI420YUVPacked( 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,
+ int i_width, int i_height, int i_alpha )
{
int i_src1_pitch, i_src2_pitch, i_dst_pitch;
uint8_t *p_dst, *p_src1, *p_src2_y;
uint8_t *p_src2_u, *p_src2_v;
- uint8_t *p_trans;
- int i_x, i_y, i_pix_pitch, i_trans;
+ int i_x, i_y, i_pix_pitch;
vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
int i_l_offset = 0, i_u_offset = 0, i_v_offset = 0;
p_filter->fmt_in.video.i_x_offset/2 +
p_src->p[V_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset/2;
- p_trans = p_src->p[A_PLANE].p_pixels +
- p_filter->fmt_in.video.i_x_offset +
- p_src->p[A_PLANE].i_pitch * p_filter->fmt_in.video.i_y_offset;
-
- i_width = (i_width >> 1) << 1; /* Needs to be a multiple of 2 */
+ i_width &= ~1; /* Needs to be a multiple of 2 */
#define MAX_TRANS 255
#define TRANS_BITS 8
/* Draw until we reach the bottom of the subtitle */
- for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ for( i_y = 0; i_y < i_height; i_y++,
p_dst += i_dst_pitch, p_src1 += i_src1_pitch,
p_src2_y += i_src2_pitch, p_src2_u += i_src2_pitch,
p_src2_v += i_src2_pitch )
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++, b_even = !b_even )
{
- i_trans = ( p_trans[i_x] * i_alpha ) / 255;
- if( !i_trans )
- {
- /* Completely transparent. Don't change pixel */
- }
- else if( i_trans == MAX_TRANS )
+ if( i_alpha == MAX_TRANS )
{
/* Completely opaque. Completely overwrite underlying pixel */
p_dst[i_x * 2 + i_l_offset] = p_src2_y[i_x];
if( b_even )
{
- if( p_trans[i_x+1] > 0xaa )
- {
- p_dst[i_x * 2 + i_u_offset] = (p_src2_u[i_x]+p_src2_u[i_x+1])>>1;
- p_dst[i_x * 2 + i_v_offset] = (p_src2_v[i_x]+p_src2_v[i_x+1])>>1;
- }
- else
- {
- p_dst[i_x * 2 + i_u_offset] = p_src2_u[i_x];
- p_dst[i_x * 2 + i_v_offset] = p_src2_v[i_x];
- }
+ p_dst[i_x * 2 + i_u_offset] = p_src2_u[i_x/2];
+ p_dst[i_x * 2 + i_v_offset] = p_src2_v[i_x/2];
}
}
else
{
/* Blending */
- p_dst[i_x * 2 + i_l_offset] = ( (uint16_t)p_src2_y[i_x] * i_trans +
- (uint16_t)p_src1[i_x * 2 + i_l_offset] * (MAX_TRANS - i_trans) )
+ p_dst[i_x * 2 + i_l_offset] = ( (uint16_t)p_src2_y[i_x] * i_alpha +
+ (uint16_t)p_src1[i_x * 2 + i_l_offset] * (MAX_TRANS - i_alpha) )
>> TRANS_BITS;
if( b_even )
{
- uint16_t i_u = 0;
- uint16_t i_v = 0;
- if( p_trans[i_x+1] > 0xaa )
- {
- i_u = (p_src2_u[i_x]+p_src2_u[i_x+1])>>1;
- i_v = (p_src2_v[i_x]+p_src2_v[i_x+1])>>1;
- }
- else
- {
- i_u = p_src2_u[i_x];
- i_v = p_src2_v[i_x];
- }
- p_dst[i_x * 2 + i_u_offset] = ( (uint16_t)i_u * i_trans +
- (uint16_t)p_src1[i_x * 2 + i_u_offset] * (MAX_TRANS - i_trans) )
+ uint16_t i_u = p_src2_u[i_x/2];
+ uint16_t i_v = p_src2_v[i_x/2];
+ p_dst[i_x * 2 + i_u_offset] = ( (uint16_t)i_u * i_alpha +
+ (uint16_t)p_src1[i_x * 2 + i_u_offset] * (MAX_TRANS - i_alpha) )
>> TRANS_BITS;
- p_dst[i_x * 2 + i_v_offset] = ( (uint16_t)i_v * i_trans +
- (uint16_t)p_src1[i_x * 2 + i_v_offset] * (MAX_TRANS - i_trans) )
+ p_dst[i_x * 2 + i_v_offset] = ( (uint16_t)i_v * i_alpha +
+ (uint16_t)p_src1[i_x * 2 + i_v_offset] * (MAX_TRANS - i_alpha) )
>> TRANS_BITS;
}
}
}
+ if( i_y%2 == 1 )
+ {
+ p_src2_u += i_src2_pitch/2;
+ p_src2_v += i_src2_pitch/2;
+ }
}
#undef MAX_TRANS
return;
}
-static void BlendRGBAR16( filter_t *p_filter, picture_t *p_dst_pic,
+static void BlendRGBAR24( 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,
int i_width, int i_height, int i_alpha )
return;
}
-static void BlendRGBAR24( filter_t *p_filter, picture_t *p_dst_pic,
+static void BlendRGBAR16( 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,
int i_width, int i_height, int i_alpha )
return;
}
+
+static void BlendRGBAYUVPacked( 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,
+ int i_width, int i_height, int i_alpha )
+{
+ int i_src1_pitch, i_src2_pitch, i_dst_pitch, i_src_pix_pitch;
+ uint8_t *p_dst, *p_src1, *p_src2;
+ uint8_t *p_trans;
+ int i_x, i_y, i_pix_pitch, i_trans;
+ vlc_bool_t b_even = !((i_x_offset + p_filter->fmt_out.video.i_x_offset)%2);
+ int i_l_offset = 0, i_u_offset = 0, i_v_offset = 0;
+ uint8_t y, u, v;
+
+ if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','U','Y','2') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 1;
+ i_v_offset = 3;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('U','Y','V','Y') )
+ {
+ i_l_offset = 1;
+ i_u_offset = 0;
+ i_v_offset = 2;
+ }
+ else if( p_filter->fmt_out.video.i_chroma == VLC_FOURCC('Y','V','Y','U') )
+ {
+ i_l_offset = 0;
+ i_u_offset = 3;
+ i_v_offset = 1;
+ }
+
+ i_pix_pitch = 2;
+ i_dst_pitch = p_dst_pic->p->i_pitch;
+ p_dst = p_dst_pic->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_pic->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src1_pitch = p_dst_orig->p[Y_PLANE].i_pitch;
+ p_src1 = p_dst_orig->p->p_pixels + i_x_offset * i_pix_pitch +
+ p_filter->fmt_out.video.i_x_offset * i_pix_pitch +
+ p_dst_orig->p->i_pitch *
+ ( i_y_offset + p_filter->fmt_out.video.i_y_offset );
+
+ i_src_pix_pitch = p_src->p->i_pixel_pitch;
+ 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_src->p->i_pitch * p_filter->fmt_in.video.i_y_offset;
+
+ i_width = (i_width >> 1) << 1; /* Needs to be a multiple of 2 */
+
+#define MAX_TRANS 255
+#define TRANS_BITS 8
+
+ /* Draw until we reach the bottom of the subtitle */
+ for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
+ 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++, b_even = !b_even )
+ {
+#define R ( p_src2[i_x * i_src_pix_pitch + 0] )
+#define G ( p_src2[i_x * i_src_pix_pitch + 1] )
+#define B ( p_src2[i_x * i_src_pix_pitch + 2] )
+ i_trans = ( p_src2[i_x * i_src_pix_pitch + 3] * i_alpha ) / 255;
+ if( !i_trans )
+ {
+ /* Completely transparent. Don't change pixel */
+ }
+ else if( i_trans == MAX_TRANS )
+ {
+ /* Completely opaque. Completely overwrite underlying pixel */
+ rgb_to_yuv( &y, &u, &v, R, G, B );
+ p_dst[i_x * 2 + i_l_offset] = y;
+
+ if( b_even )
+ {
+ p_dst[i_x * 2 + i_u_offset] = u;
+ p_dst[i_x * 2 + i_v_offset] = v;
+ }
+ }
+ else
+ {
+ /* Blending */
+ rgb_to_yuv( &y, &u, &v, R, G, B );
+ p_dst[i_x * 2 + i_l_offset] = ( (uint16_t)y * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_l_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+
+ if( b_even )
+ {
+ p_dst[i_x * 2 + i_u_offset] = ( (uint16_t)u * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_u_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ p_dst[i_x * 2 + i_v_offset] = ( (uint16_t)v * i_trans +
+ (uint16_t)p_src1[i_x * 2 + i_v_offset] * (MAX_TRANS - i_trans) )
+ >> TRANS_BITS;
+ }
+ }
+ }
+ }
+
+#undef MAX_TRANS
+#undef TRANS_BITS
+
+ return;
+}
projects / vlc / blobdiff