diff options
Diffstat (limited to 'libart_lgpl/art_render.c')
| -rw-r--r-- | libart_lgpl/art_render.c | 552 |
1 files changed, 0 insertions, 552 deletions
diff --git a/libart_lgpl/art_render.c b/libart_lgpl/art_render.c index 65b344cc56..771f15fe44 100644 --- a/libart_lgpl/art_render.c +++ b/libart_lgpl/art_render.c @@ -39,115 +39,10 @@ struct _ArtRenderPriv { ArtRenderCallback **callbacks; }; -ArtRender * -art_render_new (int x0, int y0, int x1, int y1, - art_u8 *pixels, int rowstride, - int n_chan, int depth, ArtAlphaType alpha_type, - ArtAlphaGamma *alphagamma) -{ - ArtRenderPriv *priv; - ArtRender *result; - - priv = art_new (ArtRenderPriv, 1); - result = &priv->super; - - if (n_chan > ART_MAX_CHAN) - { - art_warn ("art_render_new: n_chan = %d, exceeds %d max\n", - n_chan, ART_MAX_CHAN); - return NULL; - } - if (depth > ART_MAX_DEPTH) - { - art_warn ("art_render_new: depth = %d, exceeds %d max\n", - depth, ART_MAX_DEPTH); - return NULL; - } - if (x0 >= x1) - { - art_warn ("art_render_new: x0 >= x1 (x0 = %d, x1 = %d)\n", x0, x1); - return NULL; - } - result->x0 = x0; - result->y0 = y0; - result->x1 = x1; - result->y1 = y1; - result->pixels = pixels; - result->rowstride = rowstride; - result->n_chan = n_chan; - result->depth = depth; - result->alpha_type = alpha_type; - - result->clear = ART_FALSE; - result->opacity = 0x10000; - result->compositing_mode = ART_COMPOSITE_NORMAL; - result->alphagamma = alphagamma; - - result->alpha_buf = NULL; - result->image_buf = NULL; - - result->run = NULL; - result->span_x = NULL; - - result->need_span = ART_FALSE; - - priv->image_source = NULL; - - priv->n_mask_source = 0; - priv->mask_source = NULL; - - return result; -} - /* todo on clear routines: I haven't really figured out what to do with clearing the alpha channel. It _should_ be possible to clear to an arbitrary RGBA color. */ -/** - * art_render_clear: Set clear color. - * @clear_color: Color with which to clear dest. - * - * Sets clear color, equivalent to actually clearing the destination - * buffer before rendering. This is the most general form. - **/ -void -art_render_clear (ArtRender *render, const ArtPixMaxDepth *clear_color) -{ - int i; - int n_ch = render->n_chan + (render->alpha_type != ART_ALPHA_NONE); - - render->clear = ART_TRUE; - for (i = 0; i < n_ch; i++) - render->clear_color[i] = clear_color[i]; -} - -/** - * art_render_clear_rgb: Set clear color, given in RGB format. - * @clear_rgb: Clear color, in 0xRRGGBB format. - * - * Sets clear color, equivalent to actually clearing the destination - * buffer before rendering. - **/ -void -art_render_clear_rgb (ArtRender *render, art_u32 clear_rgb) -{ - if (render->n_chan != 3) - art_warn ("art_render_clear_rgb: called on render with %d channels, only works with 3\n", - render->n_chan); - else - { - int r, g, b; - - render->clear = ART_TRUE; - r = clear_rgb >> 16; - g = (clear_rgb >> 8) & 0xff; - b = clear_rgb & 0xff; - render->clear_color[0] = ART_PIX_MAX_FROM_8(r); - render->clear_color[1] = ART_PIX_MAX_FROM_8(g); - render->clear_color[2] = ART_PIX_MAX_FROM_8(b); - } -} - static void art_render_nop_done (ArtRenderCallback *self, ArtRender *render) { @@ -238,43 +133,6 @@ const ArtRenderCallback art_render_clear_16_obj = #endif /* ART_MAX_DEPTH >= 16 */ -/* todo: inline */ -static ArtRenderCallback * -art_render_choose_clear_callback (ArtRender *render) -{ - ArtRenderCallback *clear_callback; - - if (render->depth == 8) - { - if (render->n_chan == 3 && - render->alpha_type == ART_ALPHA_NONE) - clear_callback = (ArtRenderCallback *)&art_render_clear_rgb8_obj; - else - clear_callback = (ArtRenderCallback *)&art_render_clear_8_obj; - } -#if ART_MAX_DEPTH >= 16 - else if (render->depth == 16) - clear_callback = (ArtRenderCallback *)&art_render_clear_16_obj; -#endif - else - { - art_die ("art_render_choose_clear_callback: inconsistent render->depth = %d\n", - render->depth); - } - return clear_callback; -} - -#if 0 -/* todo: get around to writing this */ -static void -art_render_composite_render_noa_8_norm (ArtRenderCallback *self, ArtRender *render, - art_u8 *dest, int y) -{ - int width = render->x1 - render->x0; - -} -#endif - /* This is the most general form of the function. It is slow but (hopefully) correct. Actually, I'm still worried about roundoff errors in the premul case - it seems to me that an off-by-one could @@ -882,27 +740,6 @@ const ArtRenderCallback art_render_composite_8_opt2_obj = }; -/* todo: inline */ -static ArtRenderCallback * -art_render_choose_compositing_callback (ArtRender *render) -{ - if (render->depth == 8 && render->buf_depth == 8) - { - if (render->n_chan == 3 && - render->alpha_buf == NULL && - render->alpha_type == ART_ALPHA_SEPARATE) - { - if (render->buf_alpha == ART_ALPHA_NONE) - return (ArtRenderCallback *)&art_render_composite_8_opt1_obj; - else if (render->buf_alpha == ART_ALPHA_PREMUL) - return (ArtRenderCallback *)&art_render_composite_8_opt2_obj; - } - - return (ArtRenderCallback *)&art_render_composite_8_obj; - } - return (ArtRenderCallback *)&art_render_composite_obj; -} - /** * art_render_invoke_callbacks: Invoke the callbacks in the render object. * @render: The render object. @@ -930,184 +767,6 @@ art_render_invoke_callbacks (ArtRender *render, art_u8 *dest, int y) } /** - * art_render_invoke: Perform the requested rendering task. - * @render: The render object. - * - * Invokes the renderer and all sources associated with it, to perform - * the requested rendering task. - **/ -void -art_render_invoke (ArtRender *render) -{ - ArtRenderPriv *priv = (ArtRenderPriv *)render; - int width; - int best_driver, best_score; - int i; - int n_callbacks, n_callbacks_max; - ArtImageSource *image_source; - ArtImageSourceFlags image_flags; - int buf_depth; - ArtAlphaType buf_alpha; - art_boolean first = ART_TRUE; - - if (render == NULL) - { - art_warn ("art_render_invoke: called with render == NULL\n"); - return; - } - if (priv->image_source == NULL) - { - art_warn ("art_render_invoke: no image source given\n"); - return; - } - - width = render->x1 - render->x0; - - render->run = art_new (ArtRenderMaskRun, width + 1); - - /* Elect a mask source as driver. */ - best_driver = -1; - best_score = 0; - for (i = 0; i < priv->n_mask_source; i++) - { - int score; - ArtMaskSource *mask_source; - - mask_source = priv->mask_source[i]; - score = mask_source->can_drive (mask_source, render); - if (score > best_score) - { - best_score = score; - best_driver = i; - } - } - - /* Allocate alpha buffer if needed. */ - if (priv->n_mask_source > 1 || - (priv->n_mask_source == 1 && best_driver < 0)) - { - render->alpha_buf = art_new (art_u8, (width * render->depth) >> 3); - } - - /* Negotiate image rendering and compositing. */ - image_source = priv->image_source; - image_source->negotiate (image_source, render, &image_flags, &buf_depth, - &buf_alpha); - - /* Build callback list. */ - n_callbacks_max = priv->n_mask_source + 3; - priv->callbacks = art_new (ArtRenderCallback *, n_callbacks_max); - n_callbacks = 0; - for (i = 0; i < priv->n_mask_source; i++) - if (i != best_driver) - { - ArtMaskSource *mask_source = priv->mask_source[i]; - - mask_source->prepare (mask_source, render, first); - first = ART_FALSE; - priv->callbacks[n_callbacks++] = &mask_source->super; - } - - if (render->clear && !(image_flags & ART_IMAGE_SOURCE_CAN_CLEAR)) - priv->callbacks[n_callbacks++] = - art_render_choose_clear_callback (render); - - priv->callbacks[n_callbacks++] = &image_source->super; - - /* Allocate image buffer and add compositing callback if needed. */ - if (!(image_flags & ART_IMAGE_SOURCE_CAN_COMPOSITE)) - { - int bytespp = ((render->n_chan + (buf_alpha != ART_ALPHA_NONE)) * - buf_depth) >> 3; - render->buf_depth = buf_depth; - render->buf_alpha = buf_alpha; - render->image_buf = art_new (art_u8, width * bytespp); - priv->callbacks[n_callbacks++] = - art_render_choose_compositing_callback (render); - } - - priv->n_callbacks = n_callbacks; - - if (render->need_span) - render->span_x = art_new (int, width + 1); - - /* Invoke the driver */ - if (best_driver >= 0) - { - ArtMaskSource *driver; - - driver = priv->mask_source[best_driver]; - driver->invoke_driver (driver, render); - } - else - { - art_u8 *dest_ptr = render->pixels; - int y; - - /* Dummy driver */ - render->n_run = 2; - render->run[0].x = render->x0; - render->run[0].alpha = 0x8000 + 0xff * render->opacity; - render->run[1].x = render->x1; - render->run[1].alpha = 0x8000; - if (render->need_span) - { - render->n_span = 2; - render->span_x[0] = render->x0; - render->span_x[1] = render->x1; - } - for (y = render->y0; y < render->y1; y++) - { - art_render_invoke_callbacks (render, dest_ptr, y); - dest_ptr += render->rowstride; - } - } - - if (priv->mask_source != NULL) - art_free (priv->mask_source); - - /* clean up callbacks */ - for (i = 0; i < priv->n_callbacks; i++) - { - ArtRenderCallback *callback; - - callback = priv->callbacks[i]; - callback->done (callback, render); - } - - /* Tear down object */ - if (render->alpha_buf != NULL) - art_free (render->alpha_buf); - if (render->image_buf != NULL) - art_free (render->image_buf); - art_free (render->run); - if (render->span_x != NULL) - art_free (render->span_x); - art_free (priv->callbacks); - art_free (render); -} - -/** - * art_render_mask_solid: Add a solid translucent mask. - * @render: The render object. - * @opacity: Opacity in [0..0x10000] form. - * - * Adds a translucent mask to the rendering object. - **/ -void -art_render_mask_solid (ArtRender *render, int opacity) -{ - art_u32 old_opacity = render->opacity; - art_u32 new_opacity_tmp; - - if (opacity == 0x10000) - /* avoid potential overflow */ - return; - new_opacity_tmp = old_opacity * (art_u32)opacity + 0x8000; - render->opacity = new_opacity_tmp >> 16; -} - -/** * art_render_add_mask_source: Add a mask source to the render object. * @render: Render object. * @mask_source: Mask source to add. @@ -1170,214 +829,3 @@ struct _ArtImageSourceSolid { art_boolean init; }; -static void -art_render_image_solid_done (ArtRenderCallback *self, ArtRender *render) -{ - ArtImageSourceSolid *z = (ArtImageSourceSolid *)self; - - if (z->rgbtab != NULL) - art_free (z->rgbtab); - art_free (self); -} - -static void -art_render_image_solid_rgb8_opaq_init (ArtImageSourceSolid *self, ArtRender *render) -{ - ArtImageSourceSolid *z = (ArtImageSourceSolid *)self; - ArtPixMaxDepth color_max; - int r_fg, g_fg, b_fg; - int r_bg, g_bg, b_bg; - int r, g, b; - int dr, dg, db; - int i; - int tmp; - art_u32 *rgbtab; - - rgbtab = art_new (art_u32, 256); - z->rgbtab = rgbtab; - - color_max = self->color[0]; - r_fg = ART_PIX_8_FROM_MAX (color_max); - color_max = self->color[1]; - g_fg = ART_PIX_8_FROM_MAX (color_max); - color_max = self->color[2]; - b_fg = ART_PIX_8_FROM_MAX (color_max); - - color_max = render->clear_color[0]; - r_bg = ART_PIX_8_FROM_MAX (color_max); - color_max = render->clear_color[1]; - g_bg = ART_PIX_8_FROM_MAX (color_max); - color_max = render->clear_color[2]; - b_bg = ART_PIX_8_FROM_MAX (color_max); - - r = (r_bg << 16) + 0x8000; - g = (g_bg << 16) + 0x8000; - b = (b_bg << 16) + 0x8000; - tmp = ((r_fg - r_bg) << 16) + 0x80; - dr = (tmp + (tmp >> 8)) >> 8; - tmp = ((g_fg - g_bg) << 16) + 0x80; - dg = (tmp + (tmp >> 8)) >> 8; - tmp = ((b_fg - b_bg) << 16) + 0x80; - db = (tmp + (tmp >> 8)) >> 8; - - for (i = 0; i < 256; i++) - { - rgbtab[i] = (r & 0xff0000) | ((g & 0xff0000) >> 8) | (b >> 16); - r += dr; - g += dg; - b += db; - } -} - -static void -art_render_image_solid_rgb8_opaq (ArtRenderCallback *self, ArtRender *render, - art_u8 *dest, int y) -{ - ArtImageSourceSolid *z = (ArtImageSourceSolid *)self; - ArtRenderMaskRun *run = render->run; - int n_run = render->n_run; - art_u32 *rgbtab = z->rgbtab; - art_u32 rgb; - int x0 = render->x0; - int x1 = render->x1; - int run_x0, run_x1; - int i; - int ix; - - if (n_run > 0) - { - run_x1 = run[0].x; - if (run_x1 > x0) - { - rgb = rgbtab[0]; - art_rgb_fill_run (dest, - rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, - run_x1 - x0); - } - for (i = 0; i < n_run - 1; i++) - { - run_x0 = run_x1; - run_x1 = run[i + 1].x; - rgb = rgbtab[(run[i].alpha >> 16) & 0xff]; - ix = (run_x0 - x0) * 3; -#define OPTIMIZE_LEN_1 -#ifdef OPTIMIZE_LEN_1 - if (run_x1 - run_x0 == 1) - { - dest[ix] = rgb >> 16; - dest[ix + 1] = (rgb >> 8) & 0xff; - dest[ix + 2] = rgb & 0xff; - } - else - { - art_rgb_fill_run (dest + ix, - rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, - run_x1 - run_x0); - } -#else - art_rgb_fill_run (dest + ix, - rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, - run_x1 - run_x0); -#endif - } - } - else - { - run_x1 = x0; - } - if (run_x1 < x1) - { - rgb = rgbtab[0]; - art_rgb_fill_run (dest + (run_x1 - x0) * 3, - rgb >> 16, (rgb >> 8) & 0xff, rgb & 0xff, - x1 - run_x1); - } -} - -static void -art_render_image_solid_rgb8 (ArtRenderCallback *self, ArtRender *render, - art_u8 *dest, int y) -{ - ArtImageSourceSolid *z = (ArtImageSourceSolid *)self; - int width = render->x1 - render->x0; - art_u8 r, g, b; - ArtPixMaxDepth color_max; - - /* todo: replace this simple test with real sparseness */ - if (z->init) - return; - z->init = ART_TRUE; - - color_max = z->color[0]; - r = ART_PIX_8_FROM_MAX (color_max); - color_max = z->color[1]; - g = ART_PIX_8_FROM_MAX (color_max); - color_max = z->color[2]; - b = ART_PIX_8_FROM_MAX (color_max); - - art_rgb_fill_run (render->image_buf, r, g, b, width); -} - -static void -art_render_image_solid_negotiate (ArtImageSource *self, ArtRender *render, - ArtImageSourceFlags *p_flags, - int *p_buf_depth, ArtAlphaType *p_alpha) -{ - ArtImageSourceSolid *z = (ArtImageSourceSolid *)self; - ArtImageSourceFlags flags = 0; - static void (*render_cbk) (ArtRenderCallback *self, ArtRender *render, - art_u8 *dest, int y); - - render_cbk = NULL; - - if (render->depth == 8 && render->n_chan == 3 && - render->alpha_type == ART_ALPHA_NONE) - { - if (render->clear) - { - render_cbk = art_render_image_solid_rgb8_opaq; - flags |= ART_IMAGE_SOURCE_CAN_CLEAR | ART_IMAGE_SOURCE_CAN_COMPOSITE; - art_render_image_solid_rgb8_opaq_init (z, render); - } - } - if (render_cbk == NULL) - { - if (render->depth == 8) - { - render_cbk = art_render_image_solid_rgb8; - *p_buf_depth = 8; - *p_alpha = ART_ALPHA_NONE; /* todo */ - } - } - /* todo: general case */ - self->super.render = render_cbk; - *p_flags = flags; -} - -/** - * art_render_image_solid: Add a solid color image source. - * @render: The render object. - * @color: Color. - * - * Adds an image source with the solid color given by @color. The - * color need not be retained in memory after this call. - **/ -void -art_render_image_solid (ArtRender *render, ArtPixMaxDepth *color) -{ - ArtImageSourceSolid *image_source; - int i; - - image_source = art_new (ArtImageSourceSolid, 1); - image_source->super.super.render = NULL; - image_source->super.super.done = art_render_image_solid_done; - image_source->super.negotiate = art_render_image_solid_negotiate; - - for (i = 0; i < render->n_chan; i++) - image_source->color[i] = color[i]; - - image_source->rgbtab = NULL; - image_source->init = ART_FALSE; - - art_render_add_image_source (render, &image_source->super); -} |