src/gallium/auxiliary/vl/vl_video_buffer.c

   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
  41 const 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
  47 const enum pipe_format const_resource_formats_NV12[3] = {
  48    PIPE_FORMAT_R8_UNORM,
  49    PIPE_FORMAT_R8G8_UNORM,
  50    PIPE_FORMAT_NONE
  51 };
  52
  53 const enum pipe_format *
  54 vl_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
  68 static void
  69 vl_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
  84 static struct pipe_sampler_view **
  85 vl_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
 112 error:
 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
 119 static struct pipe_sampler_view **
 120 vl_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
 151 error:
 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
 158 static struct pipe_surface **
 159 vl_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
 183 error:
 184    for (i = 0; i < buf->num_planes; ++i )
 185       pipe_surface_reference(&buf->surfaces[i], NULL);
 186
 187    return NULL;
 188 }
 189
 190 struct pipe_video_buffer *
 191 vl_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
 261 error:
 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 }