diff options
Diffstat (limited to 'libass/ass_bitmap.c')
| -rw-r--r-- | libass/ass_bitmap.c | 75 |
1 files changed, 67 insertions, 8 deletions
diff --git a/libass/ass_bitmap.c b/libass/ass_bitmap.c index cfaa16b..23b24ea 100644 --- a/libass/ass_bitmap.c +++ b/libass/ass_bitmap.c @@ -18,6 +18,8 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "config.h" + #include <stdlib.h> #include <string.h> #include <math.h> @@ -156,7 +158,63 @@ Bitmap *copy_bitmap(const Bitmap *src) return dst; } -Bitmap *outline_to_bitmap(ASS_Library *library, FT_Library ftlib, +#if CONFIG_RASTERIZER + +Bitmap *outline_to_bitmap(ASS_Renderer *render_priv, + FT_Outline *outline, int bord) +{ + ASS_Rasterizer *rst = &render_priv->rasterizer; + if (!rasterizer_set_outline(rst, outline)) { + ass_msg(render_priv->library, MSGL_WARN, "Failed to process glyph outline!\n"); + return NULL; + } + + if (rst->x_min >= rst->x_max || rst->y_min >= rst->y_max) { + Bitmap *bm = alloc_bitmap(2 * bord, 2 * bord); + bm->left = bm->top = -bord; + return bm; + } + + int x_min = rst->x_min >> 6; + int y_min = rst->y_min >> 6; + int x_max = (rst->x_max + 63) >> 6; + int y_max = (rst->y_max + 63) >> 6; + int w = x_max - x_min; + int h = y_max - y_min; + + if (w * h > 8000000) { + ass_msg(render_priv->library, MSGL_WARN, "Glyph bounding box too large: %dx%dpx", + w, h); + return NULL; + } + + int mask = (1 << rst->tile_order) - 1; + int tile_w = (w + 2 * bord + mask) & ~mask; + int tile_h = (h + 2 * bord + mask) & ~mask; + Bitmap *bm = alloc_bitmap(tile_w, tile_h); + bm->left = x_min - bord; + bm->top = -y_max - bord; + + int offs = bord & ~mask; + int bord_h = tile_h - h - bord; + if (!rasterizer_fill(rst, + bm->buffer + offs * (bm->stride + 1), + x_min - bord + offs, + y_min - bord_h + (bord_h & ~mask), + ((w + bord + mask) & ~mask) - offs, + ((h + bord + mask) & ~mask) - offs, + bm->stride, 1)) { + ass_msg(render_priv->library, MSGL_WARN, "Failed to rasterize glyph!\n"); + ass_free_bitmap(bm); + return NULL; + } + + return bm; +} + +#else + +Bitmap *outline_to_bitmap(ASS_Renderer *render_priv, FT_Outline *outline, int bord) { Bitmap *bm; @@ -186,7 +244,7 @@ Bitmap *outline_to_bitmap(ASS_Library *library, FT_Library ftlib, bbox.yMax >>= 6; if (w * h > 8000000) { - ass_msg(library, MSGL_WARN, "Glyph bounding box too large: %dx%dpx", + ass_msg(render_priv->library, MSGL_WARN, "Glyph bounding box too large: %dx%dpx", w, h); return NULL; } @@ -203,8 +261,8 @@ Bitmap *outline_to_bitmap(ASS_Library *library, FT_Library ftlib, bitmap.pixel_mode = FT_PIXEL_MODE_GRAY; // render into target bitmap - if ((error = FT_Outline_Get_Bitmap(ftlib, outline, &bitmap))) { - ass_msg(library, MSGL_WARN, "Failed to rasterize glyph: %d\n", error); + if ((error = FT_Outline_Get_Bitmap(render_priv->ftlibrary, outline, &bitmap))) { + ass_msg(render_priv->library, MSGL_WARN, "Failed to rasterize glyph: %d\n", error); ass_free_bitmap(bm); return NULL; } @@ -212,6 +270,8 @@ Bitmap *outline_to_bitmap(ASS_Library *library, FT_Library ftlib, return bm; } +#endif + /** * \brief fix outline bitmap * @@ -495,8 +555,7 @@ void be_blur_c(uint8_t *buf, intptr_t w, } } -int outline_to_bitmap3(ASS_Library *library, ASS_SynthPriv *priv_blur, - FT_Library ftlib, FT_Outline *outline, FT_Outline *border, +int outline_to_bitmap3(ASS_Renderer *render_priv, FT_Outline *outline, FT_Outline *border, Bitmap **bm_g, Bitmap **bm_o, Bitmap **bm_s, int be, double blur_radius, FT_Vector shadow_offset, int border_style, int border_visible) @@ -513,12 +572,12 @@ int outline_to_bitmap3(ASS_Library *library, ASS_SynthPriv *priv_blur, *bm_g = *bm_o = *bm_s = 0; if (outline) - *bm_g = outline_to_bitmap(library, ftlib, outline, bord); + *bm_g = outline_to_bitmap(render_priv, outline, bord); if (!*bm_g) return 1; if (border) { - *bm_o = outline_to_bitmap(library, ftlib, border, bord); + *bm_o = outline_to_bitmap(render_priv, border, bord); if (!*bm_o) { return 1; } |