diff options
Diffstat (limited to 'src/video_out/alphablend.c')
| -rw-r--r-- | src/video_out/alphablend.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/src/video_out/alphablend.c b/src/video_out/alphablend.c index be5f01617..a9f216a9e 100644 --- a/src/video_out/alphablend.c +++ b/src/video_out/alphablend.c @@ -1277,3 +1277,191 @@ void blend_yuy2 (uint8_t * dst_img, vo_overlay_t * img_overl, dst_y += dst_pitch; } } + +void clear_xx44_palette(xx44_palette_t *p) +{ + register int i; + register uint32_t *cluts = p->cluts; + register int *ids = p->lookup_cache; + + i= p->size; + while(i--) + *cluts++ = 0; + i = 2*OVL_PALETTE_SIZE; + while(i--) + *ids++ = -1; + p->max_used=1; +} + +void init_xx44_palette(xx44_palette_t *p, unsigned num_entries) +{ + p->size = (num_entries > XX44_PALETTE_SIZE) ? XX44_PALETTE_SIZE : num_entries; +} + +void dispose_xx44_palette(xx44_palette_t *p) +{ +} + +static void colorToPalette(const uint32_t *icolor, unsigned char *palette_p, + unsigned num_xvmc_components, char *xvmc_components) +{ + const clut_t *color = (const clut_t *) icolor; + int i; + for (i=0; i<num_xvmc_components; ++i) { + switch(xvmc_components[i]) { + case 'V': *palette_p = color->cr; break; + case 'U': *palette_p = color->cb; break; + case 'Y': + default: *palette_p = color->y; break; + } + *palette_p++; + } +} + + +void xx44_to_xvmc_palette(const xx44_palette_t *p,unsigned char *xvmc_palette, + unsigned first_xx44_entry, unsigned num_xx44_entries, + unsigned num_xvmc_components, char *xvmc_components) +{ + register int i; + register const uint32_t *cluts = p->cluts + first_xx44_entry; + + for (i=0; i<num_xx44_entries; ++i) { + if ((cluts - p->cluts) < p->size) { + colorToPalette(cluts++, xvmc_palette, num_xvmc_components, xvmc_components); + xvmc_palette += num_xvmc_components; + } + } +} + +static int xx44_paletteIndex(xx44_palette_t *p, int color, uint32_t clut) +{ + + register int i; + register uint32_t *cluts = p->cluts; + register int tmp; + + if ((tmp = p->lookup_cache[color]) >= 0) + if (cluts[tmp] == clut) return tmp; + + for (i=0; i<p->max_used; ++i) { + if (*cluts++ == clut) return p->lookup_cache[color] = i; + } + + if (p->max_used == p->size -1) { + printf("video_out: Warning! Out of xx44 palette colors!\n"); + return 1; + } + p->cluts[p->max_used] = clut; + return p->lookup_cache[color] = p->max_used++; +} + +static void memblend_xx44(uint8_t *mem,uint8_t val, register size_t size, uint8_t mask) +{ + register uint8_t masked_val = val & mask; + + while(size--) { + if ((*mem & mask) <= masked_val ) *mem = val; + mem++; + } +} + +void blend_xx44 (uint8_t *dst_img, vo_overlay_t *img_overl, + int dst_width, int dst_height, int dst_pitch, + xx44_palette_t *palette,int ia44) +{ + int src_width = img_overl->width; + int src_height = img_overl->height; + rle_elem_t *rle = img_overl->rle; + rle_elem_t *rle_limit = rle + img_overl->num_rle; + int mask; + int x_off = img_overl->x; + int y_off = img_overl->y; + int x, y; + uint8_t norm_pixel,clip_pixel; + uint8_t *dst_y; + uint8_t *dst; + uint8_t alphamask = (ia44) ? 0x0F : 0xF0; + int clip_right; + + if (!img_overl) + return; + + dst_y = dst_img + dst_pitch*y_off + x_off; + + if( (x_off + img_overl->width) < dst_width ) + clip_right = img_overl->width; + else + clip_right = dst_width - x_off; + + if ((src_height + y_off) > dst_height) + src_height = dst_height - y_off; + + for (y = 0; y < src_height; y++) { + + mask = !(img_overl->clip_top > y || img_overl->clip_bottom < y); + dst = dst_y; + + for (x = 0; x < src_width;) { + int len = (x + rle->len > clip_right) ? clip_right -x + 1 : rle->len; + + if (len > 0) { + norm_pixel = (uint8_t)((xx44_paletteIndex(palette,rle->color, + img_overl->color[rle->color]) << 4) | + (img_overl->trans[rle->color] & 0x0F)); + clip_pixel = (uint8_t)((xx44_paletteIndex(palette,rle->color+OVL_PALETTE_SIZE, + img_overl->clip_color[rle->color]) << 4) | + (img_overl->clip_trans[rle->color] & 0x0F)); + if (!ia44) { + norm_pixel = ((norm_pixel & 0x0F) << 4) | ((norm_pixel & 0xF0) >> 4); + clip_pixel = ((clip_pixel & 0x0F) << 4) | ((clip_pixel & 0xF0) >> 4); + } + if (mask) { + if (x < img_overl->clip_left) { + if (x + len - 1 < img_overl->clip_left) { + memblend_xx44(dst,norm_pixel,len, alphamask); + dst += len; + } else { + memblend_xx44(dst,norm_pixel,img_overl->clip_left -x, alphamask); + dst += img_overl->clip_left - x; + len -= img_overl->clip_left - x; + if (len < img_overl->clip_right - img_overl->clip_left + 1) { + memblend_xx44(dst,clip_pixel,len, alphamask); + dst += len; + } else { + memblend_xx44(dst,clip_pixel,img_overl->clip_right - img_overl->clip_left +1, + alphamask); + dst += img_overl->clip_right - img_overl->clip_left +1; + len -= img_overl->clip_right - img_overl->clip_left +1; + memblend_xx44(dst,norm_pixel,len, alphamask); + dst += len; + } + } + } else if (x <= img_overl->clip_right) { + if (len < img_overl->clip_right - x + 1) { + memblend_xx44(dst,clip_pixel,len, alphamask); + dst += len; + } else { + memblend_xx44(dst,clip_pixel,img_overl->clip_right - x +1,alphamask); + dst += img_overl->clip_right - x +1; + len -= img_overl->clip_right - x +1; + memblend_xx44(dst,norm_pixel,len, alphamask); + dst += len; + } + } else { + memblend_xx44(dst,norm_pixel,len, alphamask); + dst += len; + } + } else { + memblend_xx44(dst,norm_pixel,len, alphamask); + dst += len; + } + } + x += rle->len; + rle++; + if (rle >= rle_limit) break; + } + if (rle >= rle_limit) break; + dst_y += dst_pitch; + } +} |