src/gallium/auxiliary/vl/vl_video_buffer.h

   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 VMWARE 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 #ifndef vl_video_buffer_h
  29 #define vl_video_buffer_h
  30
  31 #include "pipe/p_context.h"
  32 #include "pipe/p_video_codec.h"
  33
  34 #include "vl_defines.h"
  35
  36 /**
  37  * implementation of a planar ycbcr buffer
  38  */
  39
  40 /* planar buffer for vl data upload and manipulation */
  41 struct vl_video_buffer
  42 {
  43    struct pipe_video_buffer base;
  44    unsigned                 num_planes;
  45    struct pipe_resource     *resources[VL_NUM_COMPONENTS];
  46    struct pipe_sampler_view *sampler_view_planes[VL_NUM_COMPONENTS];
  47    struct pipe_sampler_view *sampler_view_components[VL_NUM_COMPONENTS];
  48    struct pipe_surface      *surfaces[VL_MAX_SURFACES];
  49 };
  50
  51 static inline void
  52 vl_video_buffer_adjust_size(unsigned *width, unsigned *height, unsigned plane,
  53                             enum pipe_video_chroma_format chroma_format,
  54                             bool interlaced)
  55 {
  56    if (interlaced) {
  57       *height /= 2;
  58    }
  59    if (plane > 0) {
  60       if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
  61          *width /= 2;
  62          *height /= 2;
  63       } else if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
  64          *width /= 2;
  65       }
  66    }
  67 }
  68
  69 /**
  70  * get subformats for each plane
  71  */
  72 void
  73 vl_get_video_buffer_formats(struct pipe_screen *screen, enum pipe_format format,
  74                             enum pipe_format out_format[VL_NUM_COMPONENTS]);
  75
  76 /**
  77  * get YUV plane order
  78  */
  79 const unsigned *
  80 vl_video_buffer_plane_order(enum pipe_format format);
  81
  82 /**
  83  * get maximum size of video buffers
  84  */
  85 unsigned
  86 vl_video_buffer_max_size(struct pipe_screen *screen);
  87
  88 /**
  89  * check if video buffer format is supported for a codec/profile
  90  * can be used as default implementation of screen->is_video_format_supported
  91  */
  92 bool
  93 vl_video_buffer_is_format_supported(struct pipe_screen *screen,
  94                                     enum pipe_format format,
  95                                     enum pipe_video_profile profile,
  96                                     enum pipe_video_entrypoint entrypoint);
  97
  98 /*
  99  * set the associated data for the given video buffer
 100  */
 101 void
 102 vl_video_buffer_set_associated_data(struct pipe_video_buffer *vbuf,
 103                                     struct pipe_video_codec *vcodec,
 104                                     void *associated_data,
 105                                     void (*destroy_associated_data)(void *));
 106
 107 /*
 108  * get the associated data for the given video buffer
 109  */
 110 void *
 111 vl_video_buffer_get_associated_data(struct pipe_video_buffer *vbuf,
 112                                     struct pipe_video_codec *vcodec);
 113
 114 /**
 115  * fill a resource template for the given plane
 116  */
 117 void
 118 vl_video_buffer_template(struct pipe_resource *templ,
 119                          const struct pipe_video_buffer *templat,
 120                          enum pipe_format resource_format,
 121                          unsigned depth, unsigned array_size,
 122                          unsigned usage, unsigned plane);
 123
 124 /**
 125  * creates a video buffer, can be used as a standard implementation for pipe->create_video_buffer
 126  */
 127 struct pipe_video_buffer *
 128 vl_video_buffer_create(struct pipe_context *pipe,
 129                        const struct pipe_video_buffer *templat);
 130
 131 /**
 132  * extended create function, gets depth, array_size, usage and formats for each plane seperately
 133  */
 134 struct pipe_video_buffer *
 135 vl_video_buffer_create_ex(struct pipe_context *pipe,
 136                           const struct pipe_video_buffer *templat,
 137                           const enum pipe_format resource_formats[VL_NUM_COMPONENTS],
 138                           unsigned depth, unsigned array_size, unsigned usage);
 139
 140 /**
 141  * even more extended create function, provide the pipe_resource for each plane
 142  */
 143 struct pipe_video_buffer *
 144 vl_video_buffer_create_ex2(struct pipe_context *pipe,
 145                            const struct pipe_video_buffer *templat,
 146                            struct pipe_resource *resources[VL_NUM_COMPONENTS]);
 147
 148 /* Create pipe_video_buffer by using resource_create with planar formats. */
 149 struct pipe_video_buffer *
 150 vl_video_buffer_create_as_resource(struct pipe_context *pipe,
 151                                    const struct pipe_video_buffer *tmpl);
 152
 153 #endif /* vl_video_buffer_h */