vl_video_buffer.c revision 559f6d6cf4a9469c2c6ccea482115f22080f185f 
1/**************************************************************************
2 *
3 * Copyright 2011 Christian König.
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#include <assert.h>
29
30#include <pipe/p_screen.h>
31#include <pipe/p_context.h>
32#include <pipe/p_state.h>
33
34#include <util/u_format.h>
35#include <util/u_inlines.h>
36#include <util/u_sampler.h>
37#include <util/u_memory.h>
38
39#include "vl_video_buffer.h"
40
41static void
42vl_video_buffer_destroy(struct pipe_video_buffer *buffer)
43{
44   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
45   unsigned i;
46
47   assert(buf);
48
49   for (i = 0; i < VL_MAX_PLANES; ++i) {
50      pipe_surface_reference(&buf->surfaces[i], NULL);
51      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
52      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
53      pipe_resource_reference(&buf->resources[i], NULL);
54   }
55}
56
57static struct pipe_sampler_view **
58vl_video_buffer_sampler_view_planes(struct pipe_video_buffer *buffer)
59{
60   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
61   struct pipe_sampler_view sv_templ;
62   struct pipe_context *pipe;
63   unsigned i;
64
65   assert(buf);
66
67   pipe = buf->pipe;
68
69   for (i = 0; i < buf->num_planes; ++i ) {
70      if (!buf->sampler_view_planes[i]) {
71         memset(&sv_templ, 0, sizeof(sv_templ));
72         u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
73
74         if (util_format_get_nr_components(buf->resources[i]->format) == 1)
75            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = sv_templ.swizzle_a = PIPE_SWIZZLE_RED;
76
77         buf->sampler_view_planes[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
78         if (!buf->sampler_view_planes[i])
79            goto error;
80      }
81   }
82
83   return buf->sampler_view_planes;
84
85error:
86   for (i = 0; i < buf->num_planes; ++i )
87      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
88
89   return NULL;
90}
91
92static struct pipe_sampler_view **
93vl_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
94{
95   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
96   struct pipe_sampler_view sv_templ;
97   struct pipe_context *pipe;
98   unsigned i, j, component;
99
100   assert(buf);
101
102   pipe = buf->pipe;
103
104   for (component = 0, i = 0; i < buf->num_planes; ++i ) {
105      unsigned nr_components = util_format_get_nr_components(buf->resources[i]->format);
106
107      for (j = 0; j < nr_components; ++j, ++component) {
108         assert(component < VL_MAX_PLANES);
109
110         if (!buf->sampler_view_components[component]) {
111            memset(&sv_templ, 0, sizeof(sv_templ));
112            u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
113            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
114            sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
115            buf->sampler_view_components[component] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
116            if (!buf->sampler_view_components[component])
117               goto error;
118         }
119      }
120   }
121
122   return buf->sampler_view_components;
123
124error:
125   for (i = 0; i < VL_MAX_PLANES; ++i )
126      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
127
128   return NULL;
129}
130
131static struct pipe_surface **
132vl_video_buffer_surfaces(struct pipe_video_buffer *buffer)
133{
134   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
135   struct pipe_surface surf_templ;
136   struct pipe_context *pipe;
137   unsigned i;
138
139   assert(buf);
140
141   pipe = buf->pipe;
142
143   for (i = 0; i < buf->num_planes; ++i ) {
144      if (!buf->surfaces[i]) {
145         memset(&surf_templ, 0, sizeof(surf_templ));
146         surf_templ.format = buf->resources[i]->format;
147         surf_templ.usage = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
148         buf->surfaces[i] = pipe->create_surface(pipe, buf->resources[i], &surf_templ);
149         if (!buf->surfaces[i])
150            goto error;
151      }
152   }
153
154   return buf->surfaces;
155
156error:
157   for (i = 0; i < buf->num_planes; ++i )
158      pipe_surface_reference(&buf->surfaces[i], NULL);
159
160   return NULL;
161}
162
163struct pipe_video_buffer *
164vl_video_buffer_init(struct pipe_video_context *context,
165                     struct pipe_context *pipe,
166                     unsigned width, unsigned height, unsigned depth,
167                     enum pipe_video_chroma_format chroma_format,
168                     const enum pipe_format resource_formats[VL_MAX_PLANES],
169                     unsigned usage)
170{
171   struct vl_video_buffer *buffer;
172   struct pipe_resource templ;
173   unsigned i;
174
175   assert(context && pipe);
176
177   buffer = CALLOC_STRUCT(vl_video_buffer);
178
179   buffer->base.destroy = vl_video_buffer_destroy;
180   buffer->base.get_sampler_view_planes = vl_video_buffer_sampler_view_planes;
181   buffer->base.get_sampler_view_components = vl_video_buffer_sampler_view_components;
182   buffer->base.get_surfaces = vl_video_buffer_surfaces;
183   buffer->base.chroma_format = chroma_format;
184   buffer->base.width = width;
185   buffer->base.height = height;
186   buffer->pipe = pipe;
187   buffer->num_planes = 1;
188
189   memset(&templ, 0, sizeof(templ));
190   templ.target = depth > 1 ? PIPE_TEXTURE_3D : PIPE_TEXTURE_2D;
191   templ.format = resource_formats[0];
192   templ.width0 = width;
193   templ.height0 = height;
194   templ.depth0 = depth;
195   templ.array_size = 1;
196   templ.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
197   templ.usage = usage;
198
199   buffer->resources[0] = pipe->screen->resource_create(pipe->screen, &templ);
200   if (!buffer->resources[0])
201      goto error;
202
203   if (resource_formats[1] == PIPE_FORMAT_NONE) {
204      assert(chroma_format == PIPE_VIDEO_CHROMA_FORMAT_444);
205      assert(resource_formats[2] == PIPE_FORMAT_NONE);
206      return &buffer->base;
207   } else
208      buffer->num_planes = 2;
209
210   templ.format = resource_formats[1];
211   if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
212      templ.width0 /= 2;
213      templ.height0 /= 2;
214   } else if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
215      templ.height0 /= 2;
216   }
217
218   buffer->resources[1] = pipe->screen->resource_create(pipe->screen, &templ);
219   if (!buffer->resources[1])
220      goto error;
221
222   if (resource_formats[2] == PIPE_FORMAT_NONE)
223      return &buffer->base;
224   else
225      buffer->num_planes = 3;
226
227   templ.format = resource_formats[2];
228   buffer->resources[2] = pipe->screen->resource_create(pipe->screen, &templ);
229   if (!buffer->resources[2])
230      goto error;
231
232   return &buffer->base;
233
234error:
235   for (i = 0; i < VL_MAX_PLANES; ++i)
236      pipe_resource_reference(&buffer->resources[i], NULL);
237   FREE(buffer);
238
239   return NULL;
240}
241