vl_video_buffer.c revision 19bcd21ed151cf1716f2f87dff0f712231aa2ce7 
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
91unsigned
92vl_video_buffer_max_size(struct pipe_screen *screen)
93{
94   uint32_t max_2d_texture_level;
95
96   max_2d_texture_level = screen->get_param(screen, PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
97
98   return 1 << (max_2d_texture_level-1);
99}
100
101static void
102vl_video_buffer_destroy(struct pipe_video_buffer *buffer)
103{
104   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
105   unsigned i;
106
107   assert(buf);
108
109   for (i = 0; i < VL_MAX_PLANES; ++i) {
110      pipe_surface_reference(&buf->surfaces[i], NULL);
111      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
112      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
113      pipe_resource_reference(&buf->resources[i], NULL);
114   }
115
116   FREE(buffer);
117}
118
119static struct pipe_sampler_view **
120vl_video_buffer_sampler_view_planes(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;
126
127   assert(buf);
128
129   pipe = buf->base.context;
130
131   for (i = 0; i < buf->num_planes; ++i ) {
132      if (!buf->sampler_view_planes[i]) {
133         memset(&sv_templ, 0, sizeof(sv_templ));
134         u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
135
136         if (util_format_get_nr_components(buf->resources[i]->format) == 1)
137            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = sv_templ.swizzle_a = PIPE_SWIZZLE_RED;
138
139         buf->sampler_view_planes[i] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
140         if (!buf->sampler_view_planes[i])
141            goto error;
142      }
143   }
144
145   return buf->sampler_view_planes;
146
147error:
148   for (i = 0; i < buf->num_planes; ++i )
149      pipe_sampler_view_reference(&buf->sampler_view_planes[i], NULL);
150
151   return NULL;
152}
153
154static struct pipe_sampler_view **
155vl_video_buffer_sampler_view_components(struct pipe_video_buffer *buffer)
156{
157   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
158   struct pipe_sampler_view sv_templ;
159   struct pipe_context *pipe;
160   unsigned i, j, component;
161
162   assert(buf);
163
164   pipe = buf->base.context;
165
166   for (component = 0, i = 0; i < buf->num_planes; ++i ) {
167      unsigned nr_components = util_format_get_nr_components(buf->resources[i]->format);
168
169      for (j = 0; j < nr_components; ++j, ++component) {
170         assert(component < VL_MAX_PLANES);
171
172         if (!buf->sampler_view_components[component]) {
173            memset(&sv_templ, 0, sizeof(sv_templ));
174            u_sampler_view_default_template(&sv_templ, buf->resources[i], buf->resources[i]->format);
175            sv_templ.swizzle_r = sv_templ.swizzle_g = sv_templ.swizzle_b = PIPE_SWIZZLE_RED + j;
176            sv_templ.swizzle_a = PIPE_SWIZZLE_ONE;
177            buf->sampler_view_components[component] = pipe->create_sampler_view(pipe, buf->resources[i], &sv_templ);
178            if (!buf->sampler_view_components[component])
179               goto error;
180         }
181      }
182   }
183
184   return buf->sampler_view_components;
185
186error:
187   for (i = 0; i < VL_MAX_PLANES; ++i )
188      pipe_sampler_view_reference(&buf->sampler_view_components[i], NULL);
189
190   return NULL;
191}
192
193static struct pipe_surface **
194vl_video_buffer_surfaces(struct pipe_video_buffer *buffer)
195{
196   struct vl_video_buffer *buf = (struct vl_video_buffer *)buffer;
197   struct pipe_surface surf_templ;
198   struct pipe_context *pipe;
199   unsigned i;
200
201   assert(buf);
202
203   pipe = buf->base.context;
204
205   for (i = 0; i < buf->num_planes; ++i ) {
206      if (!buf->surfaces[i]) {
207         memset(&surf_templ, 0, sizeof(surf_templ));
208         surf_templ.format = buf->resources[i]->format;
209         surf_templ.usage = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
210         buf->surfaces[i] = pipe->create_surface(pipe, buf->resources[i], &surf_templ);
211         if (!buf->surfaces[i])
212            goto error;
213      }
214   }
215
216   return buf->surfaces;
217
218error:
219   for (i = 0; i < buf->num_planes; ++i )
220      pipe_surface_reference(&buf->surfaces[i], NULL);
221
222   return NULL;
223}
224
225struct pipe_video_buffer *
226vl_video_buffer_create(struct pipe_context *pipe,
227                       enum pipe_format buffer_format,
228                       enum pipe_video_chroma_format chroma_format,
229                       unsigned width, unsigned height)
230{
231   const enum pipe_format *resource_formats;
232   struct pipe_video_buffer *result;
233   unsigned buffer_width, buffer_height;
234   bool pot_buffers;
235
236   assert(pipe);
237   assert(width > 0 && height > 0);
238
239   pot_buffers = !pipe->screen->get_video_param
240   (
241      pipe->screen,
242      PIPE_VIDEO_PROFILE_UNKNOWN,
243      PIPE_VIDEO_CAP_NPOT_TEXTURES
244   );
245
246   resource_formats = vl_video_buffer_formats(pipe->screen, buffer_format);
247   if (!resource_formats)
248      return NULL;
249
250   buffer_width = pot_buffers ? util_next_power_of_two(width) : align(width, MACROBLOCK_WIDTH);
251   buffer_height = pot_buffers ? util_next_power_of_two(height) : align(height, MACROBLOCK_HEIGHT);
252
253   result = vl_video_buffer_create_ex
254   (
255      pipe, buffer_width, buffer_height, 1,
256      chroma_format, resource_formats, PIPE_USAGE_STATIC
257   );
258   if (result)
259      result->buffer_format = buffer_format;
260
261   return result;
262}
263
264struct pipe_video_buffer *
265vl_video_buffer_create_ex(struct pipe_context *pipe,
266                          unsigned width, unsigned height, unsigned depth,
267                          enum pipe_video_chroma_format chroma_format,
268                          const enum pipe_format resource_formats[VL_MAX_PLANES],
269                          unsigned usage)
270{
271   struct vl_video_buffer *buffer;
272   struct pipe_resource templ;
273   unsigned i;
274
275   assert(pipe);
276
277   buffer = CALLOC_STRUCT(vl_video_buffer);
278
279   buffer->base.context = pipe;
280   buffer->base.destroy = vl_video_buffer_destroy;
281   buffer->base.get_sampler_view_planes = vl_video_buffer_sampler_view_planes;
282   buffer->base.get_sampler_view_components = vl_video_buffer_sampler_view_components;
283   buffer->base.get_surfaces = vl_video_buffer_surfaces;
284   buffer->base.chroma_format = chroma_format;
285   buffer->base.width = width;
286   buffer->base.height = height;
287   buffer->num_planes = 1;
288
289   memset(&templ, 0, sizeof(templ));
290   templ.target = depth > 1 ? PIPE_TEXTURE_3D : PIPE_TEXTURE_2D;
291   templ.format = resource_formats[0];
292   templ.width0 = width;
293   templ.height0 = height;
294   templ.depth0 = depth;
295   templ.array_size = 1;
296   templ.bind = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
297   templ.usage = usage;
298
299   buffer->resources[0] = pipe->screen->resource_create(pipe->screen, &templ);
300   if (!buffer->resources[0])
301      goto error;
302
303   if (resource_formats[1] == PIPE_FORMAT_NONE) {
304      assert(chroma_format == PIPE_VIDEO_CHROMA_FORMAT_444);
305      assert(resource_formats[2] == PIPE_FORMAT_NONE);
306      return &buffer->base;
307   } else
308      buffer->num_planes = 2;
309
310   templ.format = resource_formats[1];
311   if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
312      templ.width0 /= 2;
313      templ.height0 /= 2;
314   } else if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
315      templ.height0 /= 2;
316   }
317
318   buffer->resources[1] = pipe->screen->resource_create(pipe->screen, &templ);
319   if (!buffer->resources[1])
320      goto error;
321
322   if (resource_formats[2] == PIPE_FORMAT_NONE)
323      return &buffer->base;
324   else
325      buffer->num_planes = 3;
326
327   templ.format = resource_formats[2];
328   buffer->resources[2] = pipe->screen->resource_create(pipe->screen, &templ);
329   if (!buffer->resources[2])
330      goto error;
331
332   return &buffer->base;
333
334error:
335   for (i = 0; i < VL_MAX_PLANES; ++i)
336      pipe_resource_reference(&buffer->resources[i], NULL);
337   FREE(buffer);
338
339   return NULL;
340}
341