From 1106a14087d306e0d1951fd57ab527332d086615 Mon Sep 17 00:00:00 2001
From: Antoine Cellerier <dionoea@videolan.org>
Date: Mon, 2 Apr 2007 20:54:52 +0000
Subject: [PATCH] Fix I420/YV12 -> * blending. Looks like we did need separate
functions.
---
modules/video_filter/blend.c | 684 +++++++++++++++++++++++++++--------
1 file changed, 537 insertions(+), 147 deletions(-)
diff --git a/modules/video_filter/blend.c b/modules/video_filter/blend.c
index b77dea86dce0..89d7949e476e 100644
--- a/modules/video_filter/blend.c
+++ b/modules/video_filter/blend.c
@@ -47,11 +47,9 @@ static void Blend( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int );
/* TODO i_alpha support for BlendR16 */
-/* YUVA, I420, YV12 */
+/* YUVA */
static void BlendI420( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
-static void BlendI420I420( filter_t *, picture_t *, picture_t *, picture_t *,
- int, int, int, int );
static void BlendR16( filter_t *, picture_t *, picture_t *, picture_t *,
int, int, int, int, int );
static void BlendR24( filter_t *, picture_t *, picture_t *, picture_t *,
@@ -59,6 +57,19 @@ static void BlendR24( filter_t *, picture_t *, picture_t *, picture_t *,
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 );
@@ -174,18 +185,6 @@ static void Blend( filter_t *p_filter, picture_t *p_dst,
switch( p_filter->fmt_in.video.i_chroma )
{
- case VLC_FOURCC('Y','V','1','2'):
- case VLC_FOURCC('I','4','2','0'):
- if( i_alpha == 0xff &&
- ( 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')
- ) )
- {
- BlendI420I420( p_filter, p_dst, p_dst_orig, p_src,
- i_x_offset, i_y_offset,
- i_width, i_height );
- return;
- }
case VLC_FOURCC('Y','U','V','A'):
switch( p_filter->fmt_out.video.i_chroma )
{
@@ -238,6 +237,41 @@ static void Blend( filter_t *p_filter, picture_t *p_dst,
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 )
{
@@ -363,24 +397,15 @@ static void BlendI420( filter_t *p_filter, picture_t *p_dst,
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;
- if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','V','1','2') ||
- p_filter->fmt_in.video.i_chroma == VLC_FOURCC('I','4','2','0') )
- {
- p_trans = NULL;
- i_trans = i_alpha;
- }
- else
- {
- 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;
- }
+ 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 += p_trans?i_src2_pitch:0,
+ for( i_y = 0; i_y < i_height; i_y++, p_trans += i_src2_pitch,
p_dst_y += i_dst_pitch, p_src1_y += i_src1_pitch,
p_src2_y += i_src2_pitch,
p_dst_u += b_even_scanline ? i_dst_pitch/2 : 0,
@@ -437,84 +462,6 @@ static void BlendI420( filter_t *p_filter, picture_t *p_dst,
return;
}
-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_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;
-
- i_width &= ~1;
-
- /* 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,
- p_dst_u += b_even_scanline ? i_dst_pitch/2 : 0,
- p_src1_u += b_even_scanline ? i_src1_pitch/2 : 0,
- p_src2_u += i_src2_pitch,
- p_dst_v += b_even_scanline ? i_dst_pitch/2 : 0,
- p_src1_v += b_even_scanline ? i_src1_pitch/2 : 0,
- p_src2_v += i_src2_pitch )
- {
- b_even_scanline = !b_even_scanline;
-
- /* 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_filter->p_libvlc->pf_memcpy( p_dst_u, p_src2_u, i_width/2 );
- p_filter->p_libvlc->pf_memcpy( p_dst_y, p_src2_y, i_width/2 );
- }
- }
-
- return;
-}
static void BlendR16( filter_t *p_filter, picture_t *p_dst_pic,
picture_t *p_dst_orig, picture_t *p_src,
@@ -552,24 +499,15 @@ static void BlendR16( filter_t *p_filter, picture_t *p_dst_pic,
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;
- if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','V','1','2') ||
- p_filter->fmt_in.video.i_chroma == VLC_FOURCC('I','4','2','0') )
- {
- p_trans = NULL;
- i_trans = i_alpha;
- }
- else
- {
- 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;
- }
+ 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 += p_trans?i_src2_pitch:0,
+ 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 )
@@ -645,24 +583,15 @@ static void BlendR24( filter_t *p_filter, picture_t *p_dst_pic,
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;
- if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','V','1','2') ||
- p_filter->fmt_in.video.i_chroma == VLC_FOURCC('I','4','2','0') )
- {
- p_trans = NULL;
- i_trans = i_alpha;
- }
- else
- {
- 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;
- }
+ 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 += p_trans?i_src2_pitch:0,
+ 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 )
@@ -767,18 +696,9 @@ static void BlendYUVPacked( filter_t *p_filter, picture_t *p_dst_pic,
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;
- if( p_filter->fmt_in.video.i_chroma == VLC_FOURCC('Y','V','1','2') ||
- p_filter->fmt_in.video.i_chroma == VLC_FOURCC('I','4','2','0') )
- {
- p_trans = NULL;
- i_trans = i_alpha;
- }
- else
- {
- 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;
- }
+ 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 */
@@ -786,7 +706,7 @@ static void BlendYUVPacked( filter_t *p_filter, picture_t *p_dst_pic,
#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 += p_trans?i_src2_pitch:0,
+ 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 )
@@ -794,8 +714,7 @@ static void BlendYUVPacked( filter_t *p_filter, picture_t *p_dst_pic,
/* Draw until we reach the end of the line */
for( i_x = 0; i_x < i_width; i_x++, b_even = !b_even )
{
- if( p_trans )
- i_trans = ( p_trans[i_x] * i_alpha ) / 255;
+ i_trans = ( p_trans[i_x] * i_alpha ) / 255;
if( !i_trans )
{
/* Completely transparent. Don't change pixel */
@@ -851,6 +770,477 @@ static void BlendYUVPacked( filter_t *p_filter, picture_t *p_dst_pic,
}
}
+#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;
+
+ i_width &= ~1;
+
+ /* 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;
+ }
+ }
+
+ return;
+}
+
+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;
+ int i_x, i_y, i_pix_pitch;
+ 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;
+
+#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 += i_dst_pitch, p_src1 += i_src1_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( 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/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/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
+#undef TRANS_BITS
+
+ return;
+}
+
+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;
+ int i_x, i_y, i_pix_pitch;
+ 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;
+
+#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 += 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( 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/2], p_src2_v[i_x/2] );
+
+ 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/2], p_src2_v[i_x/2] );
+
+ p_dst[i_x * i_pix_pitch] = ( r * i_alpha +
+ (uint16_t)p_src1[i_x * i_pix_pitch] *
+ (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_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_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 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;
+ 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;
+
+ 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;
+
+ 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_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 )
+ {
+ 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 )
+ {
+ 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_alpha +
+ (uint16_t)p_src1[i_x * 2 + i_l_offset] * (MAX_TRANS - i_alpha) )
+ >> TRANS_BITS;
+
+ if( b_even )
+ {
+ 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_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
#undef TRANS_BITS
--
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