vl_video_buffer.c revision 00b4e48560f4d576b7b1924257322f5167e58c8d 
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
41const enum pipe_format const_resource_formats_YV12[3] = {
42   PIPE_FORMAT_R8_UNORM,
43   PIPE_FORMAT_R8_UNORM,
44   PIPE_FORMAT_R8_UNORM
45};
46
47const enum pipe_format const_resource_formats_NV12[3] = {
48   PIPE_FORMAT_R8_UNORM,
49   PIPE_FORMAT_R8G8_UNORM,
50   PIPE_FORMAT_NONE
51};
52
53const enum pipe_format *
54vl_video_buffer_formats(struct pipe_context *pipe, enum pipe_format format)
55{
56   switch(format) {
57   case PIPE_FORMAT_YV12:
58      return const_resource_formats_YV12;
59
60   case PIPE_FORMAT_NV12:
61      return const_resource_formats_NV12;
62
63   default:
64      return NULL;
65   }
66}
67
68static void
69vl_video_buffer_destroy(struct pipe_video_buffer *buffer)
70{
71   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
72   unsigned i;
73
74   assert(buf);
75
76   for (i = 0; i < VL_MAX_PLANES; ++i) {
77      pipe_surface_reference(&buf->surfaces[i], NULL);
78      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
79      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
80      pipe_resource_reference(&buf->resources[i], NULL);
81   }
82}
83
84static struct pipe_sampler_view **
85vl_video_buffer_sampler_view_planes(struct pipe_video_buffer *buffer)
86{
87   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
88   struct pipe_sampler_view sv_templ;
89   struct pipe_context *pipe;
90   unsigned i;
91
92   assert(buf);
93
94   pipe = buf->pipe;
95
96   for (i = 0; i < buf->num_planes; ++i ) {
97      if (!buf->sampler_view_planes[i]) {
98         memset(&sv_templ, 0, sizeof(sv_templ));
99         u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
100
101         if (util_format_get_nr_components(buf->resources[i]->format) == 1)
102            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = sv_templ.swizzle_a = PIPE_SWIZZLE_RED;
103
104         buf->sampler_view_planes[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
105         if (!buf->sampler_view_planes[i])
106            goto error;
107      }
108   }
109
110   return buf->sampler_view_planes;
111
112error:
113   for (i = 0; i < buf->num_planes; ++i )
114      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
115
116   return NULL;
117}
118
119static struct pipe_sampler_view **
120vl_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
121{
122   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
123   struct pipe_sampler_view sv_templ;
124   struct pipe_context *pipe;
125   unsigned i, j, component;
126
127   assert(buf);
128
129   pipe = buf->pipe;
130
131   for (component = 0, i = 0; i < buf->num_planes; ++i ) {
132      unsigned nr_components = util_format_get_nr_components(buf->resources[i]->format);
133
134      for (j = 0; j < nr_components; ++j, ++component) {
135         assert(component < VL_MAX_PLANES);
136
137         if (!buf->sampler_view_components[component]) {
138            memset(&sv_templ, 0, sizeof(sv_templ));
139            u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
140            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
141            sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
142            buf->sampler_view_components[component] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
143            if (!buf->sampler_view_components[component])
144               goto error;
145         }
146      }
147   }
148
149   return buf->sampler_view_components;
150
151error:
152   for (i = 0; i < VL_MAX_PLANES; ++i )
153      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
154
155   return NULL;
156}
157
158static struct pipe_surface **
159vl_video_buffer_surfaces(struct pipe_video_buffer *buffer)
160{
161   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
162   struct pipe_surface surf_templ;
163   struct pipe_context *pipe;
164   unsigned i;
165
166   assert(buf);
167
168   pipe = buf->pipe;
169
170   for (i = 0; i < buf->num_planes; ++i ) {
171      if (!buf->surfaces[i]) {
172         memset(&surf_templ, 0, sizeof(surf_templ));
173         surf_templ.format = buf->resources[i]->format;
174         surf_templ.usage = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
175         buf->surfaces[i] = pipe->create_surface(pipe, buf->resources[i], &surf_templ);
176         if (!buf->surfaces[i])
177            goto error;
178      }
179   }
180
181   return buf->surfaces;
182
183error:
184   for (i = 0; i < buf->num_planes; ++i )
185      pipe_surface_reference(&buf->surfaces[i], NULL);
186
187   return NULL;
188}
189
190struct pipe_video_buffer *
191vl_video_buffer_init(struct pipe_video_context *context,
192                     struct pipe_context *pipe,
193                     unsigned width, unsigned height, unsigned depth,
194                     enum pipe_video_chroma_format chroma_format,
195                     const enum pipe_format resource_formats[VL_MAX_PLANES],
196                     unsigned usage)
197{
198   struct vl_video_buffer *buffer;
199   struct pipe_resource templ;
200   unsigned i;
201
202   assert(context && pipe);
203
204   buffer = CALLOC_STRUCT(vl_video_buffer);
205
206   buffer->base.destroy = vl_video_buffer_destroy;
207   buffer->base.get_sampler_view_planes = vl_video_buffer_sampler_view_planes;
208   buffer->base.get_sampler_view_components = vl_video_buffer_sampler_view_components;
209   buffer->base.get_surfaces = vl_video_buffer_surfaces;
210   buffer->base.chroma_format = chroma_format;
211   buffer->base.width = width;
212   buffer->base.height = height;
213   buffer->pipe = pipe;
214   buffer->num_planes = 1;
215
216   memset(&templ, 0, sizeof(templ));
217   templ.target = depth > 1 ? PIPE_TEXTURE_3D : PIPE_TEXTURE_2D;
218   templ.format = resource_formats[0];
219   templ.width0 = width;
220   templ.height0 = height;
221   templ.depth0 = depth;
222   templ.array_size = 1;
223   templ.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
224   templ.usage = usage;
225
226   buffer->resources[0] = pipe->screen->resource_create(pipe->screen, &templ);
227   if (!buffer->resources[0])
228      goto error;
229
230   if (resource_formats[1] == PIPE_FORMAT_NONE) {
231      assert(chroma_format == PIPE_VIDEO_CHROMA_FORMAT_444);
232      assert(resource_formats[2] == PIPE_FORMAT_NONE);
233      return &buffer->base;
234   } else
235      buffer->num_planes = 2;
236
237   templ.format = resource_formats[1];
238   if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
239      templ.width0 /= 2;
240      templ.height0 /= 2;
241   } else if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
242      templ.height0 /= 2;
243   }
244
245   buffer->resources[1] = pipe->screen->resource_create(pipe->screen, &templ);
246   if (!buffer->resources[1])
247      goto error;
248
249   if (resource_formats[2] == PIPE_FORMAT_NONE)
250      return &buffer->base;
251   else
252      buffer->num_planes = 3;
253
254   templ.format = resource_formats[2];
255   buffer->resources[2] = pipe->screen->resource_create(pipe->screen, &templ);
256   if (!buffer->resources[2])
257      goto error;
258
259   return &buffer->base;
260
261error:
262   for (i = 0; i < VL_MAX_PLANES; ++i)
263      pipe_resource_reference(&buffer->resources[i], NULL);
264   FREE(buffer);
265
266   return NULL;
267}
268