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-rw-r--r--video/out/aspect.c148
1 files changed, 148 insertions, 0 deletions
diff --git a/video/out/aspect.c b/video/out/aspect.c
new file mode 100644
index 0000000000..f3cd00a5e5
--- /dev/null
+++ b/video/out/aspect.c
@@ -0,0 +1,148 @@
+/*
+ * This file is part of MPlayer.
+ *
+ * MPlayer is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MPlayer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with MPlayer; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/* Stuff for correct aspect scaling. */
+#include "aspect.h"
+#include "geometry.h"
+#include "video_out.h"
+#include "mp_msg.h"
+#include "options.h"
+
+#include "video_out.h"
+
+void aspect_save_videores(struct vo *vo, int w, int h, int d_w, int d_h)
+{
+ vo->aspdat.orgw = w;
+ vo->aspdat.orgh = h;
+ vo->aspdat.prew = d_w;
+ vo->aspdat.preh = d_h;
+ vo->aspdat.par = (double)d_w / d_h * h / w;
+}
+
+void aspect_save_screenres(struct vo *vo, int scrw, int scrh)
+{
+ mp_msg(MSGT_VO, MSGL_DBG2, "aspect_save_screenres %dx%d\n", scrw, scrh);
+ struct MPOpts *opts = vo->opts;
+ if (scrw <= 0 && scrh <= 0)
+ scrw = 1024;
+ if (scrh <= 0)
+ scrh = (scrw * 3 + 3) / 4;
+ if (scrw <= 0)
+ scrw = (scrh * 4 + 2) / 3;
+ vo->aspdat.scrw = scrw;
+ vo->aspdat.scrh = scrh;
+ if (opts->force_monitor_aspect)
+ vo->monitor_par = opts->force_monitor_aspect * scrh / scrw;
+ else
+ vo->monitor_par = 1.0 / opts->monitor_pixel_aspect;
+}
+
+/* aspect is called with the source resolution and the
+ * resolution, that the scaled image should fit into
+ */
+
+void aspect_fit(struct vo *vo, int *srcw, int *srch, int fitw, int fith)
+{
+ struct aspect_data *aspdat = &vo->aspdat;
+ float pixelaspect = vo->monitor_par;
+
+ mp_msg(MSGT_VO, MSGL_DBG2, "aspect(0) fitin: %dx%d monitor_par: %.2f\n",
+ fitw, fith, vo->monitor_par);
+ *srcw = fitw;
+ *srch = (float)fitw / aspdat->prew * aspdat->preh / pixelaspect;
+ *srch += *srch % 2; // round
+ mp_msg(MSGT_VO, MSGL_DBG2, "aspect(1) wh: %dx%d (org: %dx%d)\n",
+ *srcw, *srch, aspdat->prew, aspdat->preh);
+ if (*srch > fith || *srch < aspdat->orgh) {
+ int tmpw = (float)fith / aspdat->preh * aspdat->prew * pixelaspect;
+ tmpw += tmpw % 2; // round
+ if (tmpw <= fitw) {
+ *srch = fith;
+ *srcw = tmpw;
+ } else if (*srch > fith) {
+ mp_tmsg(MSGT_VO, MSGL_WARN,
+ "[ASPECT] Warning: No suitable new res found!\n");
+ }
+ }
+ aspdat->asp = *srcw / (float)*srch;
+ mp_msg(MSGT_VO, MSGL_DBG2, "aspect(2) wh: %dx%d (org: %dx%d)\n",
+ *srcw, *srch, aspdat->prew, aspdat->preh);
+}
+
+static void get_max_dims(struct vo *vo, int *w, int *h, int zoom)
+{
+ struct aspect_data *aspdat = &vo->aspdat;
+ *w = zoom ? aspdat->scrw : aspdat->prew;
+ *h = zoom ? aspdat->scrh : aspdat->preh;
+ if (zoom && WinID >= 0)
+ zoom = A_WINZOOM;
+ if (zoom == A_WINZOOM) {
+ *w = vo->dwidth;
+ *h = vo->dheight;
+ }
+}
+
+void aspect(struct vo *vo, int *srcw, int *srch, int zoom)
+{
+ int fitw;
+ int fith;
+ get_max_dims(vo, &fitw, &fith, zoom);
+ if (!zoom && geometry_wh_changed) {
+ mp_msg(MSGT_VO, MSGL_DBG2, "aspect(0) no aspect forced!\n");
+ return; // the user doesn't want to fix aspect
+ }
+ aspect_fit(vo, srcw, srch, fitw, fith);
+}
+
+void panscan_init(struct vo *vo)
+{
+ vo->panscan_x = 0;
+ vo->panscan_y = 0;
+ vo->panscan_amount = 0.0f;
+}
+
+static void panscan_calc_internal(struct vo *vo, int zoom)
+{
+ int fwidth, fheight;
+ int vo_panscan_area;
+ int max_w, max_h;
+ get_max_dims(vo, &max_w, &max_h, zoom);
+ struct MPOpts *opts = vo->opts;
+
+ if (opts->vo_panscanrange > 0) {
+ aspect(vo, &fwidth, &fheight, zoom);
+ vo_panscan_area = max_h - fheight;
+ if (!vo_panscan_area)
+ vo_panscan_area = max_w - fwidth;
+ vo_panscan_area *= opts->vo_panscanrange;
+ } else
+ vo_panscan_area = -opts->vo_panscanrange * max_h;
+
+ vo->panscan_amount = vo_fs || zoom == A_WINZOOM ? vo_panscan : 0;
+ vo->panscan_x = vo_panscan_area * vo->panscan_amount * vo->aspdat.asp;
+ vo->panscan_y = vo_panscan_area * vo->panscan_amount;
+}
+
+/**
+ * vos that set vo_dwidth and v_dheight correctly should call this to update
+ * vo_panscan_x and vo_panscan_y
+ */
+void panscan_calc_windowed(struct vo *vo)
+{
+ panscan_calc_internal(vo, A_WINZOOM);
+}