sketcher add alpha/fill, add alpha to vframe draw_pixel, crikey tweaks

[goodguy/cinelerra.git] / cinelerra-5.1 / guicast / vframe.C

diff --git a/cinelerra-5.1/guicast/vframe.C b/cinelerra-5.1/guicast/vframe.C
index 3eca676452ca8536fa3f78993e68a24bf35fd9a1..6f0dfbb18e754e8afeed54fb846628a4df0e14e6 100644 (file)
--- a/cinelerra-5.1/guicast/vframe.C
+++ b/cinelerra-5.1/guicast/vframe.C
@@ -388,6 +388,15 @@ int VFrame::get_keyframe()
        return is_keyframe;
 }
 
+void VFrame::get_temp(VFrame *&vfrm, int w, int h, int color_model)
+{
+        if( vfrm && ( vfrm->get_w() != w || vfrm->get_h() != h ) ) {
+                delete vfrm;  vfrm = 0;
+        }
+        if( !vfrm ) vfrm = new VFrame(w, h, color_model, 0);
+}
+
+
 
 VFrameScene* VFrame::get_scene()
 {
@@ -1341,14 +1350,17 @@ int VFrame::get_memory_usage()
        return get_h() * get_bytes_per_line();
 }
 
-void VFrame::set_pixel_color(int rgb)
+// rgb component colors (eg. from colors.h)
+// a (~alpha) transparency, 0x00==solid .. 0xff==transparent
+void VFrame::set_pixel_color(int argb)
 {
-       pixel_rgb = rgb;
+       pixel_rgb = argb;
+       int ia = 0xff & (pixel_rgb >> 24);
        int ir = 0xff & (pixel_rgb >> 16);
        int ig = 0xff & (pixel_rgb >> 8);
        int ib = 0xff & (pixel_rgb >> 0);
        YUV::yuv.rgb_to_yuv_8(ir, ig, ib);
-       pixel_yuv =  (ir<<16) | (ig<<8) | (ib<<0);
+       pixel_yuv =  (ia<<24) | (ir<<16) | (ig<<8) | (ib<<0);
 }
 
 void VFrame::set_stiple(int mask)
@@ -1360,49 +1372,51 @@ int VFrame::draw_pixel(int x, int y)
 {
        if( x < 0 || y < 0 || x >= get_w() || y >= get_h() ) return 1;
 
-#define DRAW_PIXEL(type, r, g, b) { \
+#define DRAW_PIXEL(type, r, g, b, comps, a) { \
        type **rows = (type**)get_rows(); \
-       rows[y][x * components + 0] = r; \
-       rows[y][x * components + 1] = g; \
-       rows[y][x * components + 2] = b; \
-       if( components == 4 ) \
-               rows[y][x * components + 3] = mx; \
-}
-       int components = BC_CModels::components(color_model);
-       int bch = BC_CModels::calculate_pixelsize(color_model) / components;
-       int sz = 8*bch, mx = BC_CModels::is_float(color_model) ? 1 : (1<<sz)-1;
-       int is_yuv = BC_CModels::is_yuv(color_model);
-       int pixel_color = is_yuv ? pixel_yuv : pixel_rgb;
-       int ir = 0xff & (pixel_color >> 16);  float fr = 0;
-       int ig = 0xff & (pixel_color >> 8);   float fg = 0;
-       int ib = 0xff & (pixel_color >> 0);   float fb = 0;
+       type *rp = rows[y], *bp = rp + x*comps; \
+       bp[0] = r; \
+       if( comps > 1 ) { bp[1] = g; bp[2] = b; } \
+       if( comps == 4 )  bp[3] = a; \
+}
+       float fr = 0, fg = 0, fb = 0, fa = 0;
+       int pixel_color = BC_CModels::is_yuv(color_model) ? pixel_yuv : pixel_rgb;
+       int ir = (0xff & (pixel_color >> 16));
+       int ig = (0xff & (pixel_color >> 8));
+       int ib = (0xff & (pixel_color >> 0));
+       int ia = (0xff & (pixel_color >> 24)) ^ 0xff;  // transparency, not opacity
        if( (x+y) & stipple ) {
                ir = 255 - ir;  ig = 255 - ig;  ib = 255 - ib;
        }
+       int rr = (ir<<8) | ir, gg = (ig<<8) | ig, bb = (ib<<8) | ib, aa = (ia<<8) | ia;
        if( BC_CModels::is_float(color_model) ) {
-               fr = ir / 255.;  fg = ig / 255.;  fb = ib / 255.;
-               mx = 1;
-       }
-       else if( (sz-=8) > 0 ) {
-               ir <<= sz;  ig <<= sz;  ib <<= sz;
+               fr = rr/65535.f;  fg = gg/65535.f;  fb = bb/65535.f;  fa = aa/65535.f;
        }
 
        switch(get_color_model()) {
-       case BC_RGB888:
+       case BC_A8:
+               DRAW_PIXEL(uint8_t, ib, 0, 0, 1, 0);
+               break;
        case BC_YUV888:
+               DRAW_PIXEL(uint8_t, ir, ig, ib, 3, 0);
+               break;
        case BC_RGBA8888:
        case BC_YUVA8888:
-               DRAW_PIXEL(uint8_t, ir, ig, ib);
+               DRAW_PIXEL(uint8_t, ir, ig, ib, 4, ia);
                break;
        case BC_RGB161616:
        case BC_YUV161616:
+               DRAW_PIXEL(uint16_t, rr, gg, bb, 3, 0);
+               break;
        case BC_RGBA16161616:
        case BC_YUVA16161616:
-               DRAW_PIXEL(uint16_t, ir, ig, ib);
+               DRAW_PIXEL(uint16_t, rr, gg, bb, 4, aa);
                break;
        case BC_RGB_FLOAT:
+               DRAW_PIXEL(float, fr, fg, fb, 3, 0);
+               break;
        case BC_RGBA_FLOAT:
-               DRAW_PIXEL(float, fr, fg, fb);
+               DRAW_PIXEL(float, fr, fg, fb, 4, fa);
                break;
        }
        return 0;