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vlc-2-2
Commit c9d9fa20 authored by Rocky Bernstein's avatar Rocky Bernstein
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RV32 added, but not tested. All chromas now handled. 

More code cleanups.
parent 37dbdbd8
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Showing with 453 additions and 126 deletions
modules/codec/ogt/render.c
View file @ c9d9fa20
......@@ -2,9 +2,9 @@
* render.c : Philips OGT and CVD (VCD Subtitle) blending routines
*****************************************************************************
* Copyright (C) 2003, 2004 VideoLAN
* $Id: render.c,v 1.21 2004/01/23 03:46:41 rocky Exp $
* $Id: render.c,v 1.22 2004/01/23 11:03:06 rocky Exp $
*
* Author: Rocky Bernstein
* Author: Rocky Bernstein <rocky@panix.com>
* based on code from:
* Sam Hocevar <sam@zoy.org>
* Rudolf Cornelissen <rag.cornelissen@inter.nl.net>
......@@ -46,9 +46,9 @@
/* We use a fixed-point arithmetic to scaling ratios so that we
can use integer arithmetic and still get fairly precise
results. ASCALE is a shift about or power of 2.
results. ASCALE is a left shift amount.
*/
#define ASCALE 6
#define ASCALE 6 /* 2^6 = 32 */
/* Horrible hack to get dbg_print to do the right thing */
#define p_dec p_vout
......@@ -65,6 +65,8 @@ static void BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
vlc_bool_t b_15bpp );
static void BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
const subpicture_t *p_spu, vlc_bool_t b_crop );
static void BlendRV32( vout_thread_t *p_vout, picture_t *p_pic,
const subpicture_t *p_spu, vlc_bool_t b_crop );
static void BlendRGB2( vout_thread_t *p_vout, picture_t *p_pic,
const subpicture_t *p_spu, vlc_bool_t b_crop );
......@@ -106,11 +108,16 @@ void VCDSubBlend( vout_thread_t *p_vout, picture_t *p_pic,
VLC_FALSE );
break;
/* RV32 target, scaling */
/* RV24 target, scaling */
case VLC_FOURCC('R','V','2','4'):
BlendRV24( p_vout, p_pic, p_spu, p_spu->p_sys->b_crop );
break;
/* RV32 target, scaling */
case VLC_FOURCC('R','V','3','2'):
BlendRV32( p_vout, p_pic, p_spu, p_spu->p_sys->b_crop );
break;
/* NVidia overlay, no scaling */
case VLC_FOURCC('Y','U','Y','2'):
BlendYUY2( p_vout, p_pic, p_spu, p_spu->p_sys->b_crop );
......@@ -125,10 +132,6 @@ void VCDSubBlend( vout_thread_t *p_vout, picture_t *p_pic,
break;
case VLC_FOURCC('R','V','3','2'):
msg_Err( p_vout, "RV32 not implemented yet" );
break;
default:
msg_Err( p_vout, "unknown chroma, can't render SPU" );
break;
......@@ -152,7 +155,7 @@ static void BlendI420( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Common variables */
uint8_t *p_pixel_base_Y, *p_pixel_base_V, *p_pixel_base_U;
ogt_yuvt_t *p_source;
ogt_yuvt_t *p_source; /* This is the where the subtitle pixels come from */
int i_x, i_y;
vlc_bool_t even_scanline = VLC_FALSE;
......@@ -253,7 +256,7 @@ static void BlendI420( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Blend in underlying subtitle pixel. */
/* This is the location that's going to get changed.*/
/* This is the location that's going to get changed. */
uint8_t *p_pixel_Y = p_pixel_base_Y_y + i_x;
......@@ -283,7 +286,7 @@ static void BlendI420( vout_thread_t *p_vout, picture_t *p_pic,
transparent and all opaque) aren't handled properly.
But we deal with them in special cases above. */
*p_pixel_Y = ( i_sub_color_Y + i_pixel_color_Y ) >> 4;
*p_pixel_Y = ( i_sub_color_Y + i_pixel_color_Y ) >> ALPHA_BITS;
if ( even_scanline && i_x % 2 == 0 ) {
uint8_t *p_pixel_U = p_pixel_base_U_y + i_x/2;
......@@ -301,8 +304,8 @@ static void BlendI420( vout_thread_t *p_vout, picture_t *p_pic,
uint16_t i_pixel_color_V =
(uint16_t) ( *p_pixel_V *
(uint16_t) (MAX_ALPHA - p_source->s.t) ) ;
*p_pixel_U = ( i_sub_color_U + i_pixel_color_U ) >> 4;
*p_pixel_V = ( i_sub_color_V + i_pixel_color_V ) >> 4;
*p_pixel_U = ( i_sub_color_U + i_pixel_color_U )>>ALPHA_BITS;
*p_pixel_V = ( i_sub_color_V + i_pixel_color_V )>>ALPHA_BITS;
}
break;
}
......@@ -332,6 +335,8 @@ static void BlendYUY2( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Common variables */
uint8_t *p_pixel_base;
/* This is the where the subtitle pixels come from */
ogt_yuvt_t *p_source = (ogt_yuvt_t *) p_spu->p_sys->p_data;;
#if 1
......@@ -430,7 +435,7 @@ static void BlendYUY2( vout_thread_t *p_vout, picture_t *p_pic,
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed.*/
/* This is the location that's going to get changed. */
uint8_t *p_pixel = p_pixel_base_y + i_x * BYTES_PER_PIXEL;
uint8_t i_avg_u;
uint8_t i_avg_v;
......@@ -462,7 +467,7 @@ static void BlendYUY2( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Blend in underlying subtitle pixels. */
/* This is the location that's going to get changed.*/
/* This is the location that's going to get changed. */
uint8_t *p_pixel = p_pixel_base_y + i_x * BYTES_PER_PIXEL;
uint8_t i_avg_u = ( p_source->plane[U_PLANE]
+ (p_source+1)->plane[U_PLANE] ) / 2;
......@@ -516,10 +521,10 @@ static void BlendYUY2( vout_thread_t *p_vout, picture_t *p_pic,
transparent and all opaque) aren't handled properly.
But we deal with them in special cases above. */
*p_pixel++ = ( i_sub_color_Y1 + i_pixel_color_Y1 ) >> 4;
*p_pixel++ = ( i_sub_color_V + i_pixel_color_V ) >> 4;
*p_pixel++ = ( i_sub_color_Y2 + i_pixel_color_Y2 ) >> 4;
*p_pixel++ = ( i_sub_color_U + i_pixel_color_U ) >> 4;
*p_pixel++ = ( i_sub_color_Y1 + i_pixel_color_Y1 )>>ALPHA_BITS;
*p_pixel++ = ( i_sub_color_V + i_pixel_color_V ) >>ALPHA_BITS;
*p_pixel++ = ( i_sub_color_Y2 + i_pixel_color_Y2 )>>ALPHA_BITS;
*p_pixel++ = ( i_sub_color_U + i_pixel_color_U ) >>ALPHA_BITS;
break;
}
}
......@@ -623,8 +628,13 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
int i_x, i_y;
int i_y_src;
/* RGB-specific */
int i_xscale, i_yscale, i_width, i_height, i_ytmp, i_ynext;
/* Chroma specific */
uint32_t i_xscale; /* Amount we scale subtitle in the x direction,
multiplied by 2**ASCALE. */
uint32_t i_yscale; /* Amount we scale subtitle in the y direction.
multiplied by 2**ASCALE. */
int i_width, i_height, i_ytmp, i_ynext;
/* Crop-specific */
int i_x_start, i_y_start, i_x_end, i_y_end;
......@@ -722,17 +732,27 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed.
*/
uint8_t *p_dest = p_pixel_base_y + i_x * BYTES_PER_PIXEL;
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t i_rgb1;
uint8_t i_rgb2;
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_y + i_x * BYTES_PER_PIXEL;
if (b_15bpp)
yuv2rgb555(p_source, &i_rgb1, &i_rgb2);
else
yuv2rgb565(p_source, &i_rgb1, &i_rgb2);
*p_dest++ = i_rgb1;
*p_dest++ = i_rgb2;
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = i_rgb1;
*p_dest++ = i_rgb2;
}
break;
}
......@@ -741,14 +761,23 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Blend in underlying pixel subtitle pixel. */
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_y + i_x * BYTES_PER_PIXEL;
/* To be able to scale correctly for full opaqueness, we
add 1 to the alpha. This means alpha value 0 won't
be completely transparent and is not correct, but
that's handled in a special case above anyway. */
uint8_t *p_dest = p_pixel_base_y + i_x * BYTES_PER_PIXEL;
uint8_t i_destalpha = MAX_ALPHA - p_source->s.t;
uint8_t rgb[3];
uint8_t i_rgb1;
uint8_t i_rgb2;
if (b_15bpp)
yuv2rgb555(p_source, &i_rgb1, &i_rgb2);
......@@ -801,14 +830,17 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed.
*/
uint8_t *p_pixel_base_x = p_pixel_base
+ i_x * BYTES_PER_PIXEL;
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t *p_pixel_base_x = p_pixel_base + i_xdest;
for( ; i_ytmp < i_ynext ; i_ytmp += p_pic->p->i_pitch )
{
/* This is the location that's going to get changed. */
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_x + i_ytmp;
uint8_t i_rgb1;
uint8_t i_rgb2;
......@@ -816,8 +848,11 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
yuv2rgb555(p_source, &i_rgb1, &i_rgb2);
else
yuv2rgb565(p_source, &i_rgb1, &i_rgb2);
*p_dest++ = i_rgb1;
*p_dest++ = i_rgb2;
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = i_rgb1;
*p_dest++ = i_rgb2;
}
}
break;
}
......@@ -834,7 +869,8 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
uint8_t *p_dest = p_pixel_base + i_ytmp;
uint8_t i_destalpha = MAX_ALPHA - p_source->s.t;
uint8_t rgb[3];
uint8_t i_rgb1;
uint8_t i_rgb2;
if (b_15bpp)
yuv2rgb555(p_source, &i_rgb1, &i_rgb2);
......@@ -851,12 +887,15 @@ BlendRV16( vout_thread_t *p_vout, picture_t *p_pic,
}
#undef BYTES_PER_PIXEL
#define BYTES_PER_PIXEL 3
#define BYTES_PER_PIXEL 4
/*
RV24 format: a pixel is represented by 3 bytes containing a red,
RV24 format??? Is this just for X11? Or just not for Win32? Is this
the same as RV32?
a pixel is represented by 3 bytes containing a red,
blue and green sample with blue stored at the lowest address, green
next then red. No padding bytes are added between pixels. Although
next then red. One padding byte is added between pixels. Although
this may not be part of a spec, images should be stored with each
line padded to a u_int32 boundary.
*/
......@@ -868,7 +907,7 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
uint8_t *p_pixel_base;
ogt_yuvt_t *p_src_start = (ogt_yuvt_t *)p_spu->p_sys->p_data;
ogt_yuvt_t *p_src_end = &p_src_start[p_spu->i_height * p_spu->i_width];
ogt_yuvt_t *p_source;
ogt_yuvt_t *p_source; /* This is the where the subtitle pixels come from */
int i_x, i_y;
int i_y_src;
......@@ -876,17 +915,25 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
/* Make sure we start on a word (4-byte) boundary. */
uint32_t i_spu_x;
/* Chroma specific */
uint32_t i_xscale; /* Amount we scale subtitle in the x direction,
multiplied by 2**ASCALE. */
uint32_t i_yscale; /* Amount we scale subtitle in the y direction.
multiplied by 2**ASCALE. */
/* RGB-specific */
int32_t i_xscale, i_yscale, i_width, i_height, i_ytmp, i_ynext;
int i_width, i_height, i_ytmp, i_ynext;
/* Crop-specific */
int32_t i_x_start, i_y_start, i_x_end, i_y_end;
struct subpicture_sys_t *p_sys = p_spu->p_sys;
unsigned int i_aspect_x, i_aspect_y;
i_xscale = ( p_vout->output.i_width << ASCALE ) / p_vout->render.i_width;
vout_AspectRatio( p_vout->render.i_aspect, &i_aspect_y,
&i_aspect_x );
i_xscale = (( p_vout->output.i_width << ASCALE ) * i_aspect_x)
/ (i_aspect_y * p_vout->render.i_width);
i_yscale = ( p_vout->output.i_height << ASCALE ) / p_vout->render.i_height;
dbg_print( (DECODE_DBG_CALL|DECODE_DBG_RENDER),
......@@ -902,11 +949,8 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
/* Set where we will start blending subtitle from using
the picture coordinates subtitle offsets.
i_spu_x needs to be word (16-bit) aligned.
*/
i_spu_x = (( ((p_spu->i_x * i_xscale) >> ASCALE) * BYTES_PER_PIXEL )
& 0xfffc );
i_spu_x = ((p_spu->i_x * i_xscale) >> ASCALE) * BYTES_PER_PIXEL;
p_pixel_base = p_pic->p->p_pixels + i_spu_x
+ ( (p_spu->i_y * i_yscale) >> ASCALE ) * p_pic->p->i_pitch;
......@@ -974,45 +1018,25 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed.
*/
uint16_t i_dest_x =
((i_x * i_xscale ) >> ASCALE) * BYTES_PER_PIXEL;
uint8_t *p_dest = p_pixel_base_y + i_dest_x;
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t rgb[3];
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_y + i_xdest;
yuv2rgb(p_source, rgb);
switch (i_dest_x % 4) {
case 3:
p_dest-=3;
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
*p_dest++;
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
break;
case 2:
p_dest-=2;
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
*p_dest++;
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
break;
case 1:
p_dest--;
case 0:
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
break;
default: /* Can't happen */;
break;
}
#ifdef TRANSPARENCY_FINISHED
......@@ -1020,21 +1044,33 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Blend in underlying pixel subtitle pixel. */
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
/* To be able to scale correctly for full opaqueness, we
add 1 to the alpha. This means alpha value 0 won't
be completely transparent and is not correct, but
that's handled in a special case above anyway. */
*/
uint16_t i_dest_x =
((i_x * i_xscale ) >> ASCALE) * BYTES_PER_PIXEL;
uint8_t *p_dest = p_pixel_base_y + i_dest_x;
uint8_t rgb[3];
uint8_t i_destalpha = MAX_ALPHA - p_source->s.t;
uint8_t rgb[3];
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_y + i_xdest;
yuv2rgb(p_source, rgb);
rv32_pack_blend(p_dest, rgb, dest_alpha, ALPHA_SCALEDOWN);
rv32_pack_blend(p_dest, rgb, dest_alpha,
ALPHA_SCALEDOWN);
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
*p_dest++;
}
break;
}
#endif /*TRANSPARENCY_FINISHED*/
......@@ -1082,10 +1118,13 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed.
*/
uint8_t i_dest_x = ((i_x * i_xscale ) >> ASCALE)
* BYTES_PER_PIXEL;
/* This is the location that's going to get changed. */
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t rgb[3];
yuv2rgb(p_source, rgb);
......@@ -1095,41 +1134,312 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed.
*/
uint8_t *p_dest = p_pixel_base + i_ytmp + i_dest_x;
uint8_t rgb[3];
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base + i_ytmp + i_xdest;
switch (i_dest_x % 4) {
case 3:
p_dest-=3;
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
*p_dest++;
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
break;
case 2:
p_dest-=2;
}
}
break;
}
#ifdef TRANSPARENCY_FINISHED
default:
{
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t rgb[3];
yuv2rgb(p_source, rgb);
for( ; i_ytmp < i_ynext ; y_ytmp += p_pic->p->i_pitch )
{
/* Blend in underlying pixel subtitle pixel. */
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base + i_ytmp + i_xdest;
/* To be able to scale correctly for full opaqueness, we
add 1 to the alpha. This means alpha value 0 won't
be completely transparent and is not correct, but
that's handled in a special case above anyway. */
uint8_t i_destalpha = MAX_ALPHA - p_source->s.t;
rv32_pack_blend(p_dest, rgb, dest_alpha,
ALPHA_SCALEDOWN);
}
break;
#endif /*TRANSPARENCY_FINISHED*/
}
}
}
}
}
#undef BYTES_PER_PIXEL
#define BYTES_PER_PIXEL 4
/*
RV32 format??? Is this just for X11? Or just not for Win32? Is this
the same as RV24?
RV32 format: a pixel is represented by 4 bytes containing a red,
blue and green sample with blue stored at the lowest address, green
next then red. One padding byte is added between pixels. Although
this may not be part of a spec, images should be stored with each
line padded to a u_int32 boundary.
*/
static void
BlendRV32( vout_thread_t *p_vout, picture_t *p_pic,
const subpicture_t *p_spu, vlc_bool_t b_crop )
{
/* Common variables */
uint8_t *p_pixel_base;
ogt_yuvt_t *p_src_start = (ogt_yuvt_t *)p_spu->p_sys->p_data;
ogt_yuvt_t *p_src_end = &p_src_start[p_spu->i_height * p_spu->i_width];
ogt_yuvt_t *p_source; /* This is the where the subtitle pixels come from */
int i_x, i_y;
int i_y_src;
/* Make sure we start on a word (4-byte) boundary. */
uint32_t i_spu_x;
/* Chroma specific */
uint32_t i_xscale; /* Amount we scale subtitle in the x direction,
multiplied by 2**ASCALE. */
uint32_t i_yscale; /* Amount we scale subtitle in the y direction.
multiplied by 2**ASCALE. */
int i_width, i_height, i_ytmp, i_ynext;
/* Crop-specific */
int32_t i_x_start, i_y_start, i_x_end, i_y_end;
struct subpicture_sys_t *p_sys = p_spu->p_sys;
unsigned int i_aspect_x, i_aspect_y;
vout_AspectRatio( p_vout->render.i_aspect, &i_aspect_y,
&i_aspect_x );
i_xscale = (( p_vout->output.i_width << ASCALE ) * i_aspect_x)
/ (i_aspect_y * p_vout->render.i_width);
i_yscale = ( p_vout->output.i_height << ASCALE ) / p_vout->render.i_height;
dbg_print( (DECODE_DBG_CALL|DECODE_DBG_RENDER),
"spu: %dx%d, scaled: %dx%d, vout render: %dx%d, scale %dx%d",
p_spu->i_width, p_spu->i_height,
p_vout->output.i_width, p_vout->output.i_height,
p_vout->render.i_width, p_vout->render.i_height,
i_xscale, i_yscale
);
i_width = p_spu->i_width * i_xscale;
i_height = p_spu->i_height * i_yscale;
/* Set where we will start blending subtitle from using
the picture coordinates subtitle offsets.
*/
i_spu_x = ((p_spu->i_x * i_xscale) >> ASCALE) * BYTES_PER_PIXEL;
p_pixel_base = p_pic->p->p_pixels + i_spu_x
+ ( (p_spu->i_y * i_yscale) >> ASCALE ) * p_pic->p->i_pitch;
i_x_start = p_sys->i_x_start;
i_y_start = i_yscale * p_sys->i_y_start;
i_x_end = p_sys->i_x_end;
i_y_end = i_yscale * p_sys->i_y_end;
p_source = (ogt_yuvt_t *)p_sys->p_data;
/* Draw until we reach the bottom of the subtitle */
i_y = 0;
for( i_y_src = 0 ; i_y_src < p_spu->i_height * p_spu->i_width;
i_y_src += p_spu->i_width )
{
uint8_t *p_pixel_base_y;
i_ytmp = i_y >> ASCALE;
i_y += i_yscale;
p_pixel_base_y = p_pixel_base + (i_ytmp * p_pic->p->i_pitch);
i_x = 0;
if ( b_crop ) {
if ( i_y > i_y_end ) break;
if (i_x_start) {
i_x = i_x_start;
p_source += i_x_start;
}
}
/* Check whether we need to draw one line or more than one */
if( i_ytmp + 1 >= ( i_y >> ASCALE ) )
{
/* Draw until we reach the end of the line */
for( ; i_x < p_spu->i_width; i_x++, p_source++ )
{
if( b_crop ) {
/* FIXME: y cropping should be dealt with outside of this
loop.*/
if ( i_y < i_y_start) continue;
if ( i_x > i_x_end )
{
p_source += p_spu->i_width - i_x;
break;
}
}
if (p_source >= p_src_end) {
msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
switch( p_source->s.t )
{
case 0:
/* Completely transparent. Don't change pixel. */
break;
default:
case MAX_ALPHA:
{
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t rgb[3];
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_y + i_xdest;
yuv2rgb(p_source, rgb);
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
*p_dest++;
}
#ifdef TRANSPARENCY_FINISHED
default:
{
/* Blend in underlying pixel subtitle pixel. */
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
/* To be able to scale correctly for full opaqueness, we
add 1 to the alpha. This means alpha value 0 won't
be completely transparent and is not correct, but
that's handled in a special case above anyway. */
uint8_t i_destalpha = MAX_ALPHA - p_source->s.t;
uint8_t rgb[3];
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base_y + i_xdest;
yuv2rgb(p_source, rgb);
rv32_pack_blend(p_dest, rgb, dest_alpha,
ALPHA_SCALEDOWN);
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
*p_dest++;
}
break;
}
#endif /*TRANSPARENCY_FINISHED*/
}
}
}
}
else
{
i_ynext = p_pic->p->i_pitch * i_y >> ASCALE;
/* Draw until we reach the end of the line */
for( ; i_x < p_spu->i_width; i_x++, p_source++ )
{
if( b_crop ) {
/* FIXME: y cropping should be dealt with outside of this
loop.*/
if ( i_y < i_y_start) continue;
if ( i_x > i_x_end )
{
p_source += p_spu->i_width - i_x;
break;
}
}
if (p_source >= p_src_end) {
msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
switch( p_source->s.t )
{
case 0:
/* Completely transparent. Don't change pixel. */
break;
default:
case MAX_ALPHA:
{
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed. */
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t rgb[3];
yuv2rgb(p_source, rgb);
for( ; i_ytmp < i_ynext ; i_ytmp += p_pic->p->i_pitch )
{
/* Completely opaque. Completely overwrite underlying
pixel with subtitle pixel. */
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base + i_ytmp + i_xdest;
for ( len = i_xlast - i_xdest; len ; len--) {
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
break;
case 1:
p_dest--;
case 0:
*p_dest++ = rgb[BLUE_PIXEL];
*p_dest++ = rgb[GREEN_PIXEL];
*p_dest++ = rgb[RED_PIXEL];
break;
default: /* Can't happen */;
break;
*p_dest++;
}
}
break;
......@@ -1138,8 +1448,12 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
default:
{
uint8_t i_dest_x = ((i_x * i_xscale ) >> ASCALE)
* BYTES_PER_PIXEL;
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
uint8_t rgb[3];
yuv2rgb(p_source, rgb);
......@@ -1148,13 +1462,17 @@ BlendRV24( vout_thread_t *p_vout, picture_t *p_pic,
{
/* Blend in underlying pixel subtitle pixel. */
/* This is the location that's going to get changed. */
uint8_t *p_dest = p_pixel_base + i_ytmp + i_xdest;
/* To be able to scale correctly for full opaqueness, we
add 1 to the alpha. This means alpha value 0 won't
be completely transparent and is not correct, but
that's handled in a special case above anyway. */
uint8_t *p_dest = p_pixel_base + i_ytmp + i_dest_x;
uint8_t i_destalpha = MAX_ALPHA - p_source->s.t;
rv32_pack_blend(p_dest, rgb, dest_alpha,ALPHA_SCALEDOWN);
rv32_pack_blend(p_dest, rgb, dest_alpha,
ALPHA_SCALEDOWN);
}
break;
#endif /*TRANSPARENCY_FINISHED*/
......@@ -1175,13 +1493,18 @@ BlendRGB2( vout_thread_t *p_vout, picture_t *p_pic,
uint8_t *p_pixel_base;
uint8_t *p_src_start = (uint8_t *)p_spu->p_sys->p_data;
uint8_t *p_src_end = &p_src_start[p_spu->i_height * p_spu->i_width];
uint8_t *p_source;
uint8_t *p_source; /* This is the where the subtitle pixels come from */
int i_x, i_y;
int i_y_src;
/* RGB-specific */
int i_xscale, i_yscale, i_width, i_height, i_ytmp;
/* Chroma specific */
uint32_t i_xscale; /* Amount we scale subtitle in the x direction,
multiplied by 2**ASCALE. */
uint32_t i_yscale; /* Amount we scale subtitle in the y direction.
multiplied by 2**ASCALE. */
int i_width, i_height, i_ytmp;
/* Crop-specific */
int i_x_start, i_y_start, i_x_end, i_y_end;
......@@ -1298,8 +1621,10 @@ BlendRGB2( vout_thread_t *p_vout, picture_t *p_pic,
printf(" "); /*++++*/
#endif
} else {
int i_xdest = (i_x*i_xscale) >> ASCALE;
int i_xlast = ((i_x+1)*i_xscale) >> ASCALE;
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
/* This is the pixel that's going to change;*/
uint8_t *p_dest = p_pixel_base_y + i_xdest;
memset( p_dest, cmap[*p_source & 0x3], i_xlast - i_xdest );
......@@ -1348,9 +1673,11 @@ BlendRGB2( vout_thread_t *p_vout, picture_t *p_pic,
printf(" "); /*++++*/
#endif
} else {
int i_xdest = (i_x*i_xscale) >> ASCALE;
int i_xlast = ((i_x+1)*i_xscale) >> ASCALE;
int len = i_xlast - i_xdest;
uint32_t i_xdest = ( ((i_x*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t i_xlast = ( (((i_x+1)*i_xscale) >> ASCALE)
* BYTES_PER_PIXEL );
uint32_t len = i_xlast - i_xdest;
#if 0
printf("%1d", *p_source); /*++++*/
#endif
......
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