From 52d185f4aefbd20bf51452dcf875043e60f3910e Mon Sep 17 00:00:00 2001 From: Stefan Sauer Date: Fri, 25 Nov 2011 22:32:11 +0100 Subject: [PATCH] audiovisualizers: streamline the line_aa code Have a reusable dot_aa code and reuse in the line drawing. --- gst/audiovisualizers/gstdrawhelpers.h | 55 +++++++++------------------ 1 file changed, 18 insertions(+), 37 deletions(-) diff --git a/gst/audiovisualizers/gstdrawhelpers.h b/gst/audiovisualizers/gstdrawhelpers.h index 2c2cd36efb..290713f347 100644 --- a/gst/audiovisualizers/gstdrawhelpers.h +++ b/gst/audiovisualizers/gstdrawhelpers.h @@ -24,6 +24,20 @@ _vd[(_y * _st) + _x] = _c; \ } G_STMT_END +#define draw_dot_aa(_vd, _x, _y, _st, _c, _f) G_STMT_START { \ + guint32 _oc, _nc, _c1, _c2, _c3; \ + \ + _oc = _vd[(_y * _st) + _x]; \ + _c3 = (_oc & 0xff) + ((_c & 0xff) * _f); \ + _c3 = MIN(_c3, 255); \ + _c2 = ((_oc & 0xff00) >> 8) + (((_c & 0xff00) >> 8) * _f); \ + _c2 = MIN(_c2, 255); \ + _c1 = ((_oc & 0xff0000) >> 16) + (((_c & 0xff0000) >> 16) * _f); \ + _c1 = MIN(_c1, 255); \ + _nc = (_c1 << 16) | (_c2 << 8) | _c3; \ + _vd[(_y * _st) + _x] = _nc; \ +} G_STMT_END + #define draw_line(_vd, _x1, _x2, _y1, _y2, _st, _c) G_STMT_START { \ guint _i, _j, _x, _y; \ gint _dx = _x2 - _x1, _dy = _y2 - _y1; \ @@ -42,7 +56,6 @@ guint _i, _j, _x, _y; \ gint _dx = _x2 - _x1, _dy = _y2 - _y1; \ gfloat _f, _rx, _ry, _fx, _fy; \ - guint32 _oc, _nc, _c1, _c2, _c3; \ \ _j = abs (_dx) > abs (_dy) ? abs (_dx) : abs (_dy); \ for (_i = 0; _i < _j; _i++) { \ @@ -55,48 +68,16 @@ _fy = _ry - (gfloat)_y; \ \ _f = ((1.0 - _fx) + (1.0 - _fy)) / 2.0; \ - _oc = _vd[(_y * _st) + _x]; \ - _c3 = (_oc & 0xff) + ((_c & 0xff) * _f); \ - _c3 = MIN(_c3, 255); \ - _c2 = ((_oc & 0xff00) >> 8) + (((_c & 0xff00) >> 8) * _f); \ - _c2 = MIN(_c2, 255); \ - _c1 = ((_oc & 0xff0000) >> 16) + (((_c & 0xff0000) >> 16) * _f); \ - _c1 = MIN(_c1, 255); \ - _nc = 0x00 | (_c1 << 16) | (_c2 << 8) | _c3; \ - _vd[(_y * _st) + _x] = _nc; \ + draw_dot_aa (_vd, _x, _y, _st, _c, _f); \ \ _f = (_fx + (1.0 - _fy)) / 2.0; \ - _oc = _vd[(_y * _st) + _x + 1]; \ - _c3 = (_oc & 0xff) + ((_c & 0xff) * _f); \ - _c3 = MIN(_c3, 255); \ - _c2 = ((_oc & 0xff00) >> 8) + (((_c & 0xff00) >> 8) * _f); \ - _c2 = MIN(_c2, 255); \ - _c1 = ((_oc & 0xff0000) >> 16) + (((_c & 0xff0000) >> 16) * _f); \ - _c1 = MIN(_c1, 255); \ - _nc = 0x00 | (_c1 << 16) | (_c2 << 8) | _c3; \ - _vd[(_y * _st) + _x + 1] = _nc; \ + draw_dot_aa (_vd, (_x + 1), _y, _st, _c, _f); \ \ _f = ((1.0 - _fx) + _fy) / 2.0; \ - _oc = _vd[((_y + 1) * _st) + _x]; \ - _c3 = (_oc & 0xff) + ((_c & 0xff) * _f); \ - _c3 = MIN(_c3, 255); \ - _c2 = ((_oc & 0xff00) >> 8) + (((_c & 0xff00) >> 8) * _f); \ - _c2 = MIN(_c2, 255); \ - _c1 = ((_oc & 0xff0000) >> 16) + (((_c & 0xff0000) >> 16) * _f); \ - _c1 = MIN(_c1, 255); \ - _nc = 0x00 | (_c1 << 16) | (_c2 << 8) | _c3; \ - _vd[((_y + 1) * _st) + _x] = _nc; \ + draw_dot_aa (_vd, _x, (_y + 1), _st, _c, _f); \ \ _f = (_fx + _fy) / 2.0; \ - _oc = _vd[((_y + 1) * _st) + _x + 1]; \ - _c3 = (_oc & 0xff) + ((_c & 0xff) * _f); \ - _c3 = MIN(_c3, 255); \ - _c2 = ((_oc & 0xff00) >> 8) + (((_c & 0xff00) >> 8) * _f); \ - _c2 = MIN(_c2, 255); \ - _c1 = ((_oc & 0xff0000) >> 16) + (((_c & 0xff0000) >> 16) * _f); \ - _c1 = MIN(_c1, 255); \ - _nc = 0x00 | (_c1 << 16) | (_c2 << 8) | _c3; \ - _vd[((_y + 1) * _st) + _x + 1] = _nc; \ + draw_dot_aa (_vd, (_x + 1), (_y + 1), _st, _c, _f); \ } \ } G_STMT_END -- 2.34.1