src/gallium/auxiliary/vl/vl_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Younes Manton.
   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 <pipe/p_video_context.h>
  29
  30 #include <util/u_memory.h>
  31 #include <util/u_rect.h>
  32 #include <util/u_video.h>
  33
  34 #include "vl_context.h"
  35 #include "vl_compositor.h"
  36 #include "vl_mpeg12_decoder.h"
  37
  38 static void
  39 vl_context_destroy(struct pipe_video_context *context)
  40 {
  41    struct vl_context *ctx = (struct vl_context*)context;
  42
  43    assert(context);
  44
  45    ctx->pipe->destroy(ctx->pipe);
  46
  47    FREE(ctx);
  48 }
  49
  50 static int
  51 vl_context_get_param(struct pipe_video_context *context, int param)
  52 {
  53    struct vl_context *ctx = (struct vl_context*)context;
  54
  55    assert(context);
  56
  57    if (param == PIPE_CAP_NPOT_TEXTURES)
  58       return !ctx->pot_buffers;
  59
  60    debug_printf("vl_context: Unknown PIPE_CAP %d\n", param);
  61    return 0;
  62 }
  63
  64 static boolean
  65 vl_context_is_format_supported(struct pipe_video_context *context,
  66                                enum pipe_format format,
  67                                unsigned usage)
  68 {
  69    struct vl_context *ctx = (struct vl_context*)context;
  70
  71    assert(context);
  72
  73    return ctx->pipe->screen->is_format_supported(ctx->pipe->screen, format,
  74                                                  PIPE_TEXTURE_2D,
  75                                                  0, usage);
  76 }
  77
  78 static struct pipe_surface *
  79 vl_context_create_surface(struct pipe_video_context *context,
  80                           struct pipe_resource *resource,
  81                           const struct pipe_surface *templ)
  82 {
  83    struct vl_context *ctx = (struct vl_context*)context;
  84
  85    assert(ctx);
  86
  87    return ctx->pipe->create_surface(ctx->pipe, resource, templ);
  88 }
  89
  90 static struct pipe_sampler_view *
  91 vl_context_create_sampler_view(struct pipe_video_context *context,
  92                                struct pipe_resource *resource,
  93                                const struct pipe_sampler_view *templ)
  94 {
  95    struct vl_context *ctx = (struct vl_context*)context;
  96
  97    assert(ctx);
  98
  99    return ctx->pipe->create_sampler_view(ctx->pipe, resource, templ);
 100 }
 101
 102 static void
 103 vl_context_upload_sampler(struct pipe_video_context *context,
 104                           struct pipe_sampler_view *dst,
 105                           const struct pipe_box *dst_box,
 106                           const void *src, unsigned src_stride,
 107                           unsigned src_x, unsigned src_y)
 108 {
 109    struct vl_context *ctx = (struct vl_context*)context;
 110    struct pipe_transfer *transfer;
 111    void *map;
 112
 113    assert(context);
 114    assert(dst);
 115    assert(dst_box);
 116    assert(src);
 117
 118    transfer = ctx->pipe->get_transfer(ctx->pipe, dst->texture, 0, PIPE_TRANSFER_WRITE, dst_box);
 119    if (!transfer)
 120       return;
 121
 122    map = ctx->pipe->transfer_map(ctx->pipe, transfer);
 123    if (!transfer)
 124       goto error_map;
 125
 126    util_copy_rect(map, dst->texture->format, transfer->stride, 0, 0,
 127                   dst_box->width, dst_box->height,
 128                   src, src_stride, src_x, src_y);
 129
 130    ctx->pipe->transfer_unmap(ctx->pipe, transfer);
 131
 132 error_map:
 133    ctx->pipe->transfer_destroy(ctx->pipe, transfer);
 134 }
 135
 136 static void
 137 vl_context_clear_sampler(struct pipe_video_context *context,
 138                          struct pipe_sampler_view *dst,
 139                          const struct pipe_box *dst_box,
 140                          const float *rgba)
 141 {
 142    struct vl_context *ctx = (struct vl_context*)context;
 143    struct pipe_transfer *transfer;
 144    union util_color uc;
 145    void *map;
 146    unsigned i;
 147
 148    assert(context);
 149    assert(dst);
 150    assert(dst_box);
 151    assert(rgba);
 152
 153    transfer = ctx->pipe->get_transfer(ctx->pipe, dst->texture, 0, PIPE_TRANSFER_WRITE, dst_box);
 154    if (!transfer)
 155       return;
 156
 157    map = ctx->pipe->transfer_map(ctx->pipe, transfer);
 158    if (!transfer)
 159       goto error_map;
 160
 161    for ( i = 0; i < 4; ++i)
 162       uc.f[i] = rgba[i];
 163
 164    util_fill_rect(map, dst->texture->format, transfer->stride, 0, 0,
 165                   dst_box->width, dst_box->height, &uc);
 166
 167    ctx->pipe->transfer_unmap(ctx->pipe, transfer);
 168
 169 error_map:
 170    ctx->pipe->transfer_destroy(ctx->pipe, transfer);
 171 }
 172
 173 static struct pipe_video_decoder *
 174 vl_context_create_decoder(struct pipe_video_context *context,
 175                           enum pipe_video_profile profile,
 176                           enum pipe_video_chroma_format chroma_format,
 177                           unsigned width, unsigned height)
 178 {
 179    struct vl_context *ctx = (struct vl_context*)context;
 180    unsigned buffer_width, buffer_height;
 181
 182    assert(context);
 183    assert(width > 0 && height > 0);
 184
 185    buffer_width = ctx->pot_buffers ? util_next_power_of_two(width) : width;
 186    buffer_height = ctx->pot_buffers ? util_next_power_of_two(height) : height;
 187
 188    switch (u_reduce_video_profile(profile)) {
 189       case PIPE_VIDEO_CODEC_MPEG12:
 190          return vl_create_mpeg12_decoder(context, ctx->pipe, profile, chroma_format,
 191                                          buffer_width, buffer_height);
 192       default:
 193          return NULL;
 194    }
 195    return NULL;
 196 }
 197
 198 static struct pipe_video_buffer *
 199 vl_context_create_buffer(struct pipe_video_context *context,
 200                          enum pipe_format buffer_format,
 201                          enum pipe_video_chroma_format chroma_format,
 202                          unsigned width, unsigned height)
 203 {
 204    const enum pipe_format resource_formats[3] = {
 205       PIPE_FORMAT_R8_SNORM,
 206       PIPE_FORMAT_R8_SNORM,
 207       PIPE_FORMAT_R8_SNORM
 208    };
 209
 210    struct vl_context *ctx = (struct vl_context*)context;
 211    unsigned buffer_width, buffer_height;
 212
 213    assert(context);
 214    assert(width > 0 && height > 0);
 215    assert(buffer_format == PIPE_FORMAT_YV12);
 216
 217    buffer_width = ctx->pot_buffers ? util_next_power_of_two(width) : width;
 218    buffer_height = ctx->pot_buffers ? util_next_power_of_two(height) : height;
 219
 220    return vl_video_buffer_init(context, ctx->pipe,
 221                                buffer_width, buffer_height, 1,
 222                                chroma_format, 3,
 223                                resource_formats,
 224                                PIPE_USAGE_STATIC);
 225 }
 226
 227 static struct pipe_video_compositor *
 228 vl_context_create_compositor(struct pipe_video_context *context)
 229 {
 230    struct vl_context *ctx = (struct vl_context*)context;
 231
 232    assert(context);
 233
 234    return vl_compositor_init(context, ctx->pipe);
 235 }
 236
 237 struct pipe_video_context *
 238 vl_create_context(struct pipe_context *pipe, bool pot_buffers)
 239 {
 240    struct vl_context *ctx;
 241
 242    ctx = CALLOC_STRUCT(vl_context);
 243
 244    if (!ctx)
 245       return NULL;
 246
 247    ctx->base.screen = pipe->screen;
 248
 249    ctx->base.destroy = vl_context_destroy;
 250    ctx->base.get_param = vl_context_get_param;
 251    ctx->base.is_format_supported = vl_context_is_format_supported;
 252    ctx->base.create_surface = vl_context_create_surface;
 253    ctx->base.create_sampler_view = vl_context_create_sampler_view;
 254    ctx->base.clear_sampler = vl_context_clear_sampler;
 255    ctx->base.upload_sampler = vl_context_upload_sampler;
 256    ctx->base.create_decoder = vl_context_create_decoder;
 257    ctx->base.create_buffer = vl_context_create_buffer;
 258    ctx->base.create_compositor = vl_context_create_compositor;
 259
 260    ctx->pipe = pipe;
 261    ctx->pot_buffers = pot_buffers;
 262
 263    return &ctx->base;
 264 }