vl_video_buffer.c revision 4e837f557bf5f5afb286e1f2244ed69c0092c2d6 
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_screen *screen, 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
68boolean
69vl_video_buffer_is_format_supported(struct pipe_screen *screen,
70                                    enum pipe_format format,
71                                    enum pipe_video_profile profile)
72{
73   const enum pipe_format *resource_formats;
74   unsigned i;
75
76   resource_formats = vl_video_buffer_formats(screen, format);
77   if (!resource_formats)
78      return false;
79
80   for(i = 0; i < VL_MAX_PLANES; ++i) {
81      if (!resource_formats[i])
82         continue;
83
84      if (!screen->is_format_supported(screen, resource_formats[i], PIPE_TEXTURE_2D, 0, PIPE_USAGE_STATIC))
85         return false;
86   }
87
88   return true;
89}
90
91static void
92vl_video_buffer_destroy(struct pipe_video_buffer *buffer)
93{
94   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
95   unsigned i;
96
97   assert(buf);
98
99   for (i = 0; i < VL_MAX_PLANES; ++i) {
100      pipe_surface_reference(&buf->surfaces[i], NULL);
101      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
102      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
103      pipe_resource_reference(&buf->resources[i], NULL);
104   }
105}
106
107static struct pipe_sampler_view **
108vl_video_buffer_sampler_view_planes(struct pipe_video_buffer *buffer)
109{
110   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
111   struct pipe_sampler_view sv_templ;
112   struct pipe_context *pipe;
113   unsigned i;
114
115   assert(buf);
116
117   pipe = buf->base.context;
118
119   for (i = 0; i < buf->num_planes; ++i ) {
120      if (!buf->sampler_view_planes[i]) {
121         memset(&sv_templ, 0, sizeof(sv_templ));
122         u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
123
124         if (util_format_get_nr_components(buf->resources[i]->format) == 1)
125            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = sv_templ.swizzle_a = PIPE_SWIZZLE_RED;
126
127         buf->sampler_view_planes[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
128         if (!buf->sampler_view_planes[i])
129            goto error;
130      }
131   }
132
133   return buf->sampler_view_planes;
134
135error:
136   for (i = 0; i < buf->num_planes; ++i )
137      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
138
139   return NULL;
140}
141
142static struct pipe_sampler_view **
143vl_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
144{
145   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
146   struct pipe_sampler_view sv_templ;
147   struct pipe_context *pipe;
148   unsigned i, j, component;
149
150   assert(buf);
151
152   pipe = buf->base.context;
153
154   for (component = 0, i = 0; i < buf->num_planes; ++i ) {
155      unsigned nr_components = util_format_get_nr_components(buf->resources[i]->format);
156
157      for (j = 0; j < nr_components; ++j, ++component) {
158         assert(component < VL_MAX_PLANES);
159
160         if (!buf->sampler_view_components[component]) {
161            memset(&sv_templ, 0, sizeof(sv_templ));
162            u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
163            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
164            sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
165            buf->sampler_view_components[component] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
166            if (!buf->sampler_view_components[component])
167               goto error;
168         }
169      }
170   }
171
172   return buf->sampler_view_components;
173
174error:
175   for (i = 0; i < VL_MAX_PLANES; ++i )
176      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
177
178   return NULL;
179}
180
181static struct pipe_surface **
182vl_video_buffer_surfaces(struct pipe_video_buffer *buffer)
183{
184   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
185   struct pipe_surface surf_templ;
186   struct pipe_context *pipe;
187   unsigned i;
188
189   assert(buf);
190
191   pipe = buf->base.context;
192
193   for (i = 0; i < buf->num_planes; ++i ) {
194      if (!buf->surfaces[i]) {
195         memset(&surf_templ, 0, sizeof(surf_templ));
196         surf_templ.format = buf->resources[i]->format;
197         surf_templ.usage = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
198         buf->surfaces[i] = pipe->create_surface(pipe, buf->resources[i], &surf_templ);
199         if (!buf->surfaces[i])
200            goto error;
201      }
202   }
203
204   return buf->surfaces;
205
206error:
207   for (i = 0; i < buf->num_planes; ++i )
208      pipe_surface_reference(&buf->surfaces[i], NULL);
209
210   return NULL;
211}
212
213struct pipe_video_buffer *
214vl_video_buffer_create(struct pipe_context *pipe,
215                       enum pipe_format buffer_format,
216                       enum pipe_video_chroma_format chroma_format,
217                       unsigned width, unsigned height)
218{
219   const enum pipe_format *resource_formats;
220   struct pipe_video_buffer *result;
221   unsigned buffer_width, buffer_height;
222   bool pot_buffers;
223
224   assert(pipe);
225   assert(width > 0 && height > 0);
226
227   pot_buffers = !pipe->screen->get_video_param
228   (
229      pipe->screen,
230      PIPE_VIDEO_PROFILE_UNKNOWN,
231      PIPE_VIDEO_CAP_NPOT_TEXTURES
232   );
233
234   resource_formats = vl_video_buffer_formats(pipe->screen, buffer_format);
235   if (!resource_formats)
236      return NULL;
237
238   buffer_width = pot_buffers ? util_next_power_of_two(width) : align(width, MACROBLOCK_WIDTH);
239   buffer_height = pot_buffers ? util_next_power_of_two(height) : align(height, MACROBLOCK_HEIGHT);
240
241   result = vl_video_buffer_create_ex
242   (
243      pipe, buffer_width, buffer_height, 1,
244      chroma_format, resource_formats, PIPE_USAGE_STATIC
245   );
246   if (result)
247      result->buffer_format = buffer_format;
248
249   return result;
250}
251
252struct pipe_video_buffer *
253vl_video_buffer_create_ex(struct pipe_context *pipe,
254                          unsigned width, unsigned height, unsigned depth,
255                          enum pipe_video_chroma_format chroma_format,
256                          const enum pipe_format resource_formats[VL_MAX_PLANES],
257                          unsigned usage)
258{
259   struct vl_video_buffer *buffer;
260   struct pipe_resource templ;
261   unsigned i;
262
263   assert(pipe);
264
265   buffer = CALLOC_STRUCT(vl_video_buffer);
266
267   buffer->base.context = pipe;
268   buffer->base.destroy = vl_video_buffer_destroy;
269   buffer->base.get_sampler_view_planes = vl_video_buffer_sampler_view_planes;
270   buffer->base.get_sampler_view_components = vl_video_buffer_sampler_view_components;
271   buffer->base.get_surfaces = vl_video_buffer_surfaces;
272   buffer->base.chroma_format = chroma_format;
273   buffer->base.width = width;
274   buffer->base.height = height;
275   buffer->num_planes = 1;
276
277   memset(&templ, 0, sizeof(templ));
278   templ.target = depth > 1 ? PIPE_TEXTURE_3D : PIPE_TEXTURE_2D;
279   templ.format = resource_formats[0];
280   templ.width0 = width;
281   templ.height0 = height;
282   templ.depth0 = depth;
283   templ.array_size = 1;
284   templ.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
285   templ.usage = usage;
286
287   buffer->resources[0] = pipe->screen->resource_create(pipe->screen, &templ);
288   if (!buffer->resources[0])
289      goto error;
290
291   if (resource_formats[1] == PIPE_FORMAT_NONE) {
292      assert(chroma_format == PIPE_VIDEO_CHROMA_FORMAT_444);
293      assert(resource_formats[2] == PIPE_FORMAT_NONE);
294      return &buffer->base;
295   } else
296      buffer->num_planes = 2;
297
298   templ.format = resource_formats[1];
299   if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
300      templ.width0 /= 2;
301      templ.height0 /= 2;
302   } else if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
303      templ.height0 /= 2;
304   }
305
306   buffer->resources[1] = pipe->screen->resource_create(pipe->screen, &templ);
307   if (!buffer->resources[1])
308      goto error;
309
310   if (resource_formats[2] == PIPE_FORMAT_NONE)
311      return &buffer->base;
312   else
313      buffer->num_planes = 3;
314
315   templ.format = resource_formats[2];
316   buffer->resources[2] = pipe->screen->resource_create(pipe->screen, &templ);
317   if (!buffer->resources[2])
318      goto error;
319
320   return &buffer->base;
321
322error:
323   for (i = 0; i < VL_MAX_PLANES; ++i)
324      pipe_resource_reference(&buffer->resources[i], NULL);
325   FREE(buffer);
326
327   return NULL;
328}
329