vl_compositor.h revision 8082816e27a0ee376e679c4d81ff8a3f0611ea9e 
1/**************************************************************************
2 *
3 * Copyright 2009 Younes Manton.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28#ifndef vl_compositor_h
29#define vl_compositor_h
30
31#include <pipe/p_state.h>
32#include <pipe/p_video_decoder.h>
33#include <pipe/p_video_state.h>
34
35#include "vl_types.h"
36
37struct pipe_context;
38
39/**
40 * composing and displaying of image data
41 */
42
43#define VL_COMPOSITOR_MAX_LAYERS 16
44
45struct vl_compositor_layer
46{
47   bool clearing;
48
49   void *fs;
50   void *samplers[3];
51
52   struct pipe_sampler_view *sampler_views[3];
53   struct {
54      struct vertex2f tl, br;
55   } src, dst;
56};
57
58struct vl_compositor
59{
60   struct pipe_context *pipe;
61
62   struct pipe_framebuffer_state fb_state;
63   struct pipe_viewport_state viewport;
64   struct pipe_vertex_buffer vertex_buf;
65   struct pipe_resource *csc_matrix;
66
67   void *sampler_linear;
68   void *sampler_nearest;
69   void *blend;
70   void *rast;
71   void *dsa;
72   void *vertex_elems_state;
73
74   void *vs;
75   void *fs_video_buffer;
76   void *fs_palette;
77   void *fs_rgba;
78
79   float clear_color[4];
80   struct vertex2f dirty_tl, dirty_br;
81
82   unsigned used_layers:VL_COMPOSITOR_MAX_LAYERS;
83   struct vl_compositor_layer layers[VL_COMPOSITOR_MAX_LAYERS];
84};
85
86/**
87 * initialize this compositor
88 */
89bool
90vl_compositor_init(struct vl_compositor *compositor, struct pipe_context *pipe);
91
92/**
93 * set yuv -> rgba conversion matrix
94 */
95void
96vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float mat[16]);
97
98/**
99 * reset dirty area, so it's cleared with the clear colour
100 */
101void
102vl_compositor_reset_dirty_area(struct vl_compositor *compositor);
103
104/**
105 * set the clear color
106 */
107void
108vl_compositor_set_clear_color(struct vl_compositor *compositor, float color[4]);
109
110/**
111 * set overlay samplers
112 */
113/*@{*/
114
115/**
116 * reset all currently set layers
117 */
118void
119vl_compositor_clear_layers(struct vl_compositor *compositor);
120
121/**
122 * set a video buffer as a layer to render
123 */
124void
125vl_compositor_set_buffer_layer(struct vl_compositor *compositor,
126                               unsigned layer,
127                               struct pipe_video_buffer *buffer,
128                               struct pipe_video_rect *src_rect,
129                               struct pipe_video_rect *dst_rect);
130
131/**
132 * set a paletted sampler as a layer to render
133 */
134void
135vl_compositor_set_palette_layer(struct vl_compositor *compositor,
136                                unsigned layer,
137                                struct pipe_sampler_view *indexes,
138                                struct pipe_sampler_view *palette,
139                                struct pipe_video_rect *src_rect,
140                                struct pipe_video_rect *dst_rect);
141
142/**
143 * set a rgba sampler as a layer to render
144 */
145void
146vl_compositor_set_rgba_layer(struct vl_compositor *compositor,
147                             unsigned layer,
148                             struct pipe_sampler_view *rgba,
149                             struct pipe_video_rect *src_rect,
150                             struct pipe_video_rect *dst_rect);
151
152/*@}*/
153
154/**
155 * render the layers to the frontbuffer
156 */
157void
158vl_compositor_render(struct vl_compositor          *compositor,
159                     enum pipe_mpeg12_picture_type picture_type,
160                     struct pipe_surface           *dst_surface,
161                     struct pipe_video_rect        *dst_area,
162                     struct pipe_video_rect        *dst_clip);
163
164/**
165* destroy this compositor
166*/
167void
168vl_compositor_cleanup(struct vl_compositor *compositor);
169
170#endif /* vl_compositor_h */
171