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vlc-1.1
Commit 1106a140 authored by Antoine Cellerier's avatar Antoine Cellerier
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Fix I420/YV12 -> * blending. Looks like we did need separate functions.

parent 2b5629b6
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Showing with 537 additions and 147 deletions
modules/video_filter/blend.c
View file @ 1106a140
......@@ -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;
}
#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;
}
#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;
}
#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;
}
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 )
......@@ -794,7 +714,6 @@ 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;
if( !i_trans )
{
......@@ -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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