libvo, vo_vdpau: make the EOSD packer code from vo_vdpau generic

The code in eosd_packer.c/.h is taken from vo_vdpau.c and has been made
independent from vdpau API specifics. This allows other VOs, which need
to pack the small EOSD images into a large surface for efficiency, to use
this code.

1 files changed, 71 insertions, 0 deletions

diff --git a/libvo/eosd_packer.h b/libvo/eosd_packer.h
new file mode 100644
index 0000000000..e207a4a2dd
--- /dev/null
+++ b/libvo/eosd_packer.h
@@ -0,0 +1,71 @@
+/*
+ * This file is part of mplayer2.
+ *
+ * mplayer2 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.
+ *
+ * mplayer2 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 mplayer2; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPLAYER_EOSD_PACKER_H
+#define MPLAYER_EOSD_PACKER_H
+
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include "sub/ass_mp.h"
+
+// Pool of surfaces
+struct eosd_surface {
+    //void *native_surface;
+    int w;
+    int h;
+};
+
+struct eosd_rect {
+    int x0, y0, x1, y1;
+};
+
+// List of surfaces to be rendered
+struct eosd_target {
+    struct eosd_rect source;    // position in EOSD surface
+    struct eosd_rect dest;      // position on screen
+    uint32_t color;             // libass-style color of the image
+    // NOTE: This must not be accessed after you return from your VO's
+    //       VOCTRL_DRAW_EOSD call - libass will free or reuse the associated
+    //       memory. Feel free to set this to NULL to make erroneous accesses to
+    //       this member fail early.
+    ASS_Image *ass_img;
+};
+
+struct eosd_packer {
+    struct eosd_surface surface;
+    struct eosd_target *targets;
+    int targets_count;  // number of valid elements in targets
+    int targets_size;   // number of allocated elements in targets
+
+    uint32_t max_surface_width;
+    uint32_t max_surface_height;
+
+    int *scratch;
+};
+
+struct eosd_packer *eosd_packer_create(void *talloc_ctx);
+void eosd_packer_reinit(struct eosd_packer *state, uint32_t max_width,
+                        uint32_t max_height);
+void eosd_packer_generate(struct eosd_packer *state, mp_eosd_images_t *imgs,
+                          bool *out_need_reposition, bool *out_need_upload,
+                          bool *out_need_reallocate);
+bool eosd_packer_calculate_source_bb(struct eosd_packer *state,
+                                     struct eosd_rect *out_bb);
+
+#endif /* MPLAYER_EOSD_PACKER_H */