xa_yuv.c revision 340c0f6f9ece070e3f3245134eabe80d7551a870 
1/**********************************************************
2 * Copyright 2009-2011 VMware, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 *
24 *********************************************************
25 * Authors:
26 * Zack Rusin <zackr-at-vmware-dot-com>
27 * Thomas Hellstrom <thellstrom-at-vmware-dot-com>
28 */
29
30#include "xa_context.h"
31#include "xa_priv.h"
32#include "util/u_inlines.h"
33#include "util/u_sampler.h"
34#include "util/u_surface.h"
35#include "cso_cache/cso_context.h"
36
37static void
38xa_yuv_bind_blend_state(struct xa_context *r)
39{
40    struct pipe_blend_state blend;
41
42    memset(&blend, 0, sizeof(struct pipe_blend_state));
43    blend.rt[0].blend_enable = 0;
44    blend.rt[0].colormask = PIPE_MASK_RGBA;
45
46    /* porter&duff src */
47    blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
48    blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
49    blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ZERO;
50    blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ZERO;
51
52    cso_set_blend(r->cso, &blend);
53}
54
55static void
56xa_yuv_bind_shaders(struct xa_context *r)
57{
58    unsigned vs_traits = 0, fs_traits = 0;
59    struct xa_shader shader;
60
61    vs_traits |= VS_YUV;
62    fs_traits |= FS_YUV;
63
64    shader = xa_shaders_get(r->shaders, vs_traits, fs_traits);
65    cso_set_vertex_shader_handle(r->cso, shader.vs);
66    cso_set_fragment_shader_handle(r->cso, shader.fs);
67}
68
69static void
70xa_yuv_bind_samplers(struct xa_context *r, struct xa_surface *yuv[])
71{
72    struct pipe_sampler_state *samplers[3];
73    struct pipe_sampler_state sampler;
74    struct pipe_sampler_view view_templ;
75    unsigned int i;
76
77    memset(&sampler, 0, sizeof(struct pipe_sampler_state));
78
79    sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
80    sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
81    sampler.min_img_filter = PIPE_TEX_FILTER_LINEAR;
82    sampler.mag_img_filter = PIPE_TEX_FILTER_LINEAR;
83    sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NEAREST;
84    sampler.normalized_coords = 1;
85
86    for (i = 0; i < 3; ++i) {
87	samplers[i] = &sampler;
88	u_sampler_view_default_template(&view_templ, yuv[i]->tex,
89					yuv[i]->tex->format);
90
91	r->bound_sampler_views[i] =
92	    r->pipe->create_sampler_view(r->pipe, yuv[i]->tex, &view_templ);
93    }
94    r->num_bound_samplers = 3;
95    cso_set_samplers(r->cso, 3, (const struct pipe_sampler_state **)samplers);
96    cso_set_fragment_sampler_views(r->cso, 3, r->bound_sampler_views);
97}
98
99static void
100xa_yuv_fs_constants(struct xa_context *r, const float conversion_matrix[])
101{
102    const int param_bytes = 16 * sizeof(float);
103
104    renderer_set_constants(r, PIPE_SHADER_FRAGMENT,
105			   conversion_matrix, param_bytes);
106}
107
108XA_EXPORT int
109xa_yuv_planar_blit(struct xa_context *r,
110		   int src_x,
111		   int src_y,
112		   int src_w,
113		   int src_h,
114		   int dst_x,
115		   int dst_y,
116		   int dst_w,
117		   int dst_h,
118		   struct xa_box *box,
119		   unsigned int num_boxes,
120		   const float conversion_matrix[],
121		   struct xa_surface *dst, struct xa_surface *yuv[])
122{
123    float scale_x;
124    float scale_y;
125    int ret;
126
127    if (dst_w == 0 || dst_h == 0)
128	return XA_ERR_NONE;
129
130    ret = xa_ctx_srf_create(r, dst);
131    if (ret != XA_ERR_NONE)
132	return -XA_ERR_NORES;
133
134    renderer_bind_destination(r, r->srf, r->srf->width, r->srf->height);
135    xa_yuv_bind_blend_state(r);
136    xa_yuv_bind_shaders(r);
137    xa_yuv_bind_samplers(r, yuv);
138    xa_yuv_fs_constants(r, conversion_matrix);
139
140    scale_x = (float)src_w / (float)dst_w;
141    scale_y = (float)src_h / (float)dst_h;
142
143    while (num_boxes--) {
144	int x = box->x1;
145	int y = box->y1;
146	int w = box->x2 - box->x1;
147	int h = box->y2 - box->y1;
148
149	renderer_draw_yuv(r,
150			  (float)src_x + scale_x * (x - dst_x),
151			  (float)src_y + scale_y * (y - dst_y),
152			  scale_x * w, scale_y * h, x, y, w, h, yuv);
153	box++;
154    }
155
156    r->pipe->flush(r->pipe, &r->last_fence);
157
158    xa_ctx_sampler_views_destroy(r);
159    xa_ctx_srf_destroy(r);
160
161    return XA_ERR_NONE;
162}
163