* render.c : Philips OGT and CVD (VCD Subtitle) blending routines
*****************************************************************************
* Copyright (C) 2003, 2004 VideoLAN
- * $Id: render.c,v 1.19 2004/01/22 04:46:19 rocky Exp $
+ * $Id: render.c,v 1.23 2004/01/25 18:20:12 bigben 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>
/* 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
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 );
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 );
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;
{
/* 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;
{
/* 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;
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;
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;
}
{
/* 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;;
-#ifdef EXTRA_CHECKING
+#if 1
ogt_yuvt_t *p_source_end = (ogt_yuvt_t *)p_spu->p_sys->p_data +
(p_spu->i_width * p_spu->i_height);
#endif
{
uint16_t i_avg_tr; /* transparancy sort of averaged over 2 pixels*/
-#if EXTRA_CHECKING
+#if 1
if (p_source > p_source_end-1) {
msg_Err( p_vout, "Trying to access beyond subtitle x: %d y: %d",
i_x, i_y);
/* 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;
{
/* 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;
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;
}
}
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;
/* 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;
}
{
/* 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);
}
if (p_source >= p_src_end) {
- msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
+ msg_Err( p_vout, "trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
/* 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;
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;
}
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);
}
#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.
*/
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;
/* 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),
/* 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;
}
if (p_source >= p_src_end) {
- msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
+ msg_Err( p_vout, "trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
{
/* 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
{
/* 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*/
}
if (p_source >= p_src_end) {
- msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
+ msg_Err( p_vout, "trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
/* 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);
/* 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;
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);
{
/* 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*/
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;
+ /* 4 entry colormap */
+ uint8_t cmap[NUM_SUBTITLE_COLORS];
+ int i_cmap;
+
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 );
+
+ /* Find a corresponding colormap entries for our palette entries. */
+ for( i_cmap = 0; i_cmap < NUM_SUBTITLE_COLORS; i_cmap++ )
+ {
+ uint8_t Y = p_sys->p_palette[i_cmap].s.y;
+
+ /* FIXME: when we have a way to look at colormap entries we can
+ do better. For now we have to use 0xff for white 0x00 for
+ black and 0x44 for something in between. To do this we use
+ only the Y component.
+ */
+ if (Y > 0x70)
+ cmap[i_cmap] = 0xff; /* Use white. */
+ else if (Y < 0x10)
+ cmap[i_cmap] = 0x00; /* Use black. */
+ else
+ cmap[i_cmap] = 0x44; /* Use something else. */
+ }
+
+ 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),
/* Draw until we reach the end of the line */
for( ; i_x < p_spu->i_width; i_x ++, p_source++ )
{
- ogt_yuvt_t p_yuvt = p_sys->p_palette[*p_source & 0x3];
+ ogt_yuvt_t p_yuvt;
if( b_crop ) {
}
if (p_source >= p_src_end) {
- msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
+ msg_Err( p_vout, "trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
- if ( (p_yuvt.s.t) == 0 ) {
- /* Completely transparent. Don't change pixel. */
-
+ p_yuvt = p_sys->p_palette[*p_source & 0x3];
+ if ( (p_yuvt.s.t) < (MAX_ALPHA) / 2 ) {
+ /* Completely or relatively transparent. Don't change pixel. */
+ ;
#if 0
printf(" "); /*++++*/
#endif
} else {
- uint8_t *p_dest = p_pixel_base_y + ((i_x*i_xscale) >> 7);
- /* We don't have a way to find the closest color in the
- colormap. So for now use the greyscale Y component as a
- index.
- */
- *p_dest++ = p_yuvt.s.y;
+ 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 );
#if 0
printf("%1d", *p_source); /*++++*/
#endif
/* Draw until we reach the end of the line */
for( ; i_x < p_spu->i_width; i_x ++, p_source++ )
{
+ ogt_yuvt_t p_yuvt = p_sys->p_palette[*p_source & 0x3];
+
if( b_crop ) {
/* FIXME: y cropping should be dealt with outside of this
}
if (p_source >= p_src_end) {
- msg_Err( p_vout, "Trying to access beyond subtitle %dx%d %d",
+ msg_Err( p_vout, "trying to access beyond subtitle %dx%d %d",
i_x, i_y / i_yscale, i_height);
return;
}
- if (*p_source != 0) {
- printf("_"); /*++++*/
+ if ( (p_yuvt.s.t) < (MAX_ALPHA) / 2 ) {
+ /* Completely or relatively transparent. Don't change pixel. */
+ ;
+#if 0
+ printf(" "); /*++++*/
+#endif
} else {
+ 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
for( i_ytmp = i_yreal ; i_ytmp < i_ynext ;
i_ytmp += p_pic->p->i_pitch ) {
- uint8_t *p_dest = p_pixel_base + i_ytmp
- + i_x * BYTES_PER_PIXEL;
- *p_dest++ = 0xff;
+ uint8_t *p_dest = p_pixel_base + i_ytmp + i_xdest;
+ memset( p_dest, cmap[*p_source & 0x3], len );
}
}
}
projects / vlc / blobdiff