src/gallium/drivers/softpipe/sp_video_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 "util/u_inlines.h"
  29 #include "util/u_memory.h"
  30
  31 #include "sp_video_context.h"
  32 #include <pipe/p_shader_tokens.h>
  33 #include <util/u_inlines.h>
  34 #include <util/u_memory.h>
  35 #include <util/u_keymap.h>
  36 #include <util/u_rect.h>
  37 #include <util/u_video.h>
  38 #include <util/u_surface.h>
  39 #include "sp_public.h"
  40 #include "sp_texture.h"
  41
  42 #define MACROBLOCK_WIDTH 16
  43 #define MACROBLOCK_HEIGHT 16
  44 #define BLOCK_WIDTH 8
  45 #define BLOCK_HEIGHT 8
  46
  47 #define NUM_BUFFERS 2
  48
  49 static void
  50 flush_buffer(struct sp_mpeg12_context *ctx)
  51 {
  52    unsigned ne_start, ne_num, e_start, e_num;
  53    assert(ctx);
  54
  55    if(ctx->cur_buffer != NULL) {
  56
  57       vl_vb_unmap(&ctx->cur_buffer->vertex_stream, ctx->pipe);
  58       vl_idct_unmap_buffers(&ctx->idct_y, &ctx->cur_buffer->idct_y);
  59       vl_idct_unmap_buffers(&ctx->idct_cr, &ctx->cur_buffer->idct_cr);
  60       vl_idct_unmap_buffers(&ctx->idct_cb, &ctx->cur_buffer->idct_cb);
  61       vl_vb_restart(&ctx->cur_buffer->vertex_stream,
  62                     &ne_start, &ne_num, &e_start, &e_num);
  63
  64       ctx->pipe->set_vertex_buffers(ctx->pipe, 2, ctx->cur_buffer->vertex_bufs.all);
  65       ctx->pipe->bind_vertex_elements_state(ctx->pipe, ctx->vertex_elems_state);
  66       vl_idct_flush(&ctx->idct_y, &ctx->cur_buffer->idct_y, ne_num);
  67       vl_idct_flush(&ctx->idct_cr, &ctx->cur_buffer->idct_cr, ne_num);
  68       vl_idct_flush(&ctx->idct_cb, &ctx->cur_buffer->idct_cb, ne_num);
  69       vl_mpeg12_mc_renderer_flush(&ctx->mc_renderer, &ctx->cur_buffer->mc,
  70                                   ne_start, ne_num, e_start, e_num);
  71
  72       ctx->cur_buffer = NULL;
  73    }
  74 }
  75
  76 static void
  77 rotate_buffer(struct sp_mpeg12_context *ctx)
  78 {
  79    struct pipe_resource *y, *cr, *cb;
  80    static unsigned key = 0;
  81    struct sp_mpeg12_buffer *buffer;
  82
  83    assert(ctx);
  84
  85    flush_buffer(ctx);
  86
  87    buffer = (struct sp_mpeg12_buffer*)util_keymap_lookup(ctx->buffer_map, &key);
  88    if (!buffer) {
  89       boolean added_to_map;
  90
  91       buffer = CALLOC_STRUCT(sp_mpeg12_buffer);
  92       if (buffer == NULL)
  93          return;
  94
  95       buffer->vertex_bufs.individual.quad.stride = ctx->quads.stride;
  96       buffer->vertex_bufs.individual.quad.buffer_offset = ctx->quads.buffer_offset;
  97       pipe_resource_reference(&buffer->vertex_bufs.individual.quad.buffer, ctx->quads.buffer);
  98
  99       buffer->vertex_bufs.individual.stream = vl_vb_init(&buffer->vertex_stream, ctx->pipe,
 100                                                          ctx->vertex_buffer_size);
 101       if (!(y = vl_idct_init_buffer(&ctx->idct_y, &buffer->idct_y))) {
 102          FREE(buffer);
 103          return;
 104       }
 105
 106       if (!(cr = vl_idct_init_buffer(&ctx->idct_cr, &buffer->idct_cr))) {
 107          FREE(buffer);
 108          return;
 109       }
 110
 111       if (!(cb = vl_idct_init_buffer(&ctx->idct_cb, &buffer->idct_cb))) {
 112          FREE(buffer);
 113          return;
 114       }
 115
 116       if(!vl_mpeg12_mc_init_buffer(&ctx->mc_renderer, &buffer->mc, y, cr, cb)) {
 117          FREE(buffer);
 118          return;
 119       }
 120
 121       added_to_map = util_keymap_insert(ctx->buffer_map, &key, buffer, ctx);
 122       assert(added_to_map);
 123    }
 124    ++key;
 125    key %= NUM_BUFFERS;
 126    ctx->cur_buffer = buffer;
 127
 128    vl_vb_map(&ctx->cur_buffer->vertex_stream, ctx->pipe);
 129    vl_idct_map_buffers(&ctx->idct_y, &ctx->cur_buffer->idct_y);
 130    vl_idct_map_buffers(&ctx->idct_cr, &ctx->cur_buffer->idct_cr);
 131    vl_idct_map_buffers(&ctx->idct_cb, &ctx->cur_buffer->idct_cb);
 132 }
 133
 134 static void
 135 delete_buffer(const struct keymap *map,
 136               const void *key, void *data,
 137               void *user)
 138 {
 139    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)user;
 140    struct sp_mpeg12_buffer *buf = (struct sp_mpeg12_buffer*)data;
 141
 142    assert(map);
 143    assert(key);
 144    assert(data);
 145    assert(user);
 146
 147    vl_vb_cleanup(&buf->vertex_stream);
 148    vl_idct_cleanup_buffer(&ctx->idct_y, &buf->idct_y);
 149    vl_idct_cleanup_buffer(&ctx->idct_cb, &buf->idct_cb);
 150    vl_idct_cleanup_buffer(&ctx->idct_cr, &buf->idct_cr);
 151    vl_mpeg12_mc_cleanup_buffer(&ctx->mc_renderer, &buf->mc);
 152 }
 153
 154 static void
 155 upload_buffer(struct sp_mpeg12_context *ctx,
 156               struct sp_mpeg12_buffer *buffer,
 157               struct pipe_mpeg12_macroblock *mb)
 158 {
 159    short *blocks;
 160    unsigned tb, x, y;
 161
 162    assert(ctx);
 163    assert(buffer);
 164    assert(mb);
 165
 166    blocks = mb->blocks;
 167
 168    for (y = 0; y < 2; ++y) {
 169       for (x = 0; x < 2; ++x, ++tb) {
 170          if (mb->cbp & (*ctx->mc_renderer.empty_block_mask)[0][y][x]) {
 171             vl_idct_add_block(&buffer->idct_y, mb->mbx * 2 + x, mb->mby * 2 + y, blocks);
 172             blocks += BLOCK_WIDTH * BLOCK_HEIGHT;
 173          }
 174       }
 175    }
 176
 177    /* TODO: Implement 422, 444 */
 178    assert(ctx->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
 179
 180    for (tb = 1; tb < 3; ++tb) {
 181       if (mb->cbp & (*ctx->mc_renderer.empty_block_mask)[tb][0][0]) {
 182          if(tb == 1)
 183             vl_idct_add_block(&buffer->idct_cb, mb->mbx, mb->mby, blocks);
 184          else
 185             vl_idct_add_block(&buffer->idct_cr, mb->mbx, mb->mby, blocks);
 186          blocks += BLOCK_WIDTH * BLOCK_HEIGHT;
 187       }
 188    }
 189 }
 190
 191 static void
 192 sp_mpeg12_destroy(struct pipe_video_context *vpipe)
 193 {
 194    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 195
 196    assert(vpipe);
 197
 198    flush_buffer(ctx);
 199
 200    /* Asserted in softpipe_delete_fs_state() for some reason */
 201    ctx->pipe->bind_vs_state(ctx->pipe, NULL);
 202    ctx->pipe->bind_fs_state(ctx->pipe, NULL);
 203
 204    ctx->pipe->delete_blend_state(ctx->pipe, ctx->blend);
 205    ctx->pipe->delete_rasterizer_state(ctx->pipe, ctx->rast);
 206    ctx->pipe->delete_depth_stencil_alpha_state(ctx->pipe, ctx->dsa);
 207
 208    pipe_surface_reference(&ctx->decode_target, NULL);
 209    vl_compositor_cleanup(&ctx->compositor);
 210    util_delete_keymap(ctx->buffer_map, ctx);
 211    vl_mpeg12_mc_renderer_cleanup(&ctx->mc_renderer);
 212    vl_idct_cleanup(&ctx->idct_y);
 213    vl_idct_cleanup(&ctx->idct_cr);
 214    vl_idct_cleanup(&ctx->idct_cb);
 215    ctx->pipe->delete_vertex_elements_state(ctx->pipe, ctx->vertex_elems_state);
 216    pipe_resource_reference(&ctx->quads.buffer, NULL);
 217    ctx->pipe->destroy(ctx->pipe);
 218
 219    FREE(ctx);
 220 }
 221
 222 static int
 223 sp_mpeg12_get_param(struct pipe_video_context *vpipe, int param)
 224 {
 225    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 226
 227    assert(vpipe);
 228
 229    switch (param) {
 230       case PIPE_CAP_NPOT_TEXTURES:
 231          /* XXX: Temporary; not all paths are NPOT-tested */
 232 #if 0
 233          return ctx->pipe->screen->get_param(ctx->pipe->screen, param);
 234 #endif
 235          return FALSE;
 236       case PIPE_CAP_DECODE_TARGET_PREFERRED_FORMAT:
 237          return ctx->decode_format;
 238       default:
 239       {
 240          debug_printf("Softpipe: Unknown PIPE_CAP %d\n", param);
 241          return 0;
 242       }
 243    }
 244 }
 245
 246 static struct pipe_surface *
 247 sp_mpeg12_create_surface(struct pipe_video_context *vpipe,
 248                          struct pipe_resource *resource,
 249                          const struct pipe_surface *templat)
 250 {
 251    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 252
 253    assert(vpipe);
 254
 255    return ctx->pipe->create_surface(ctx->pipe, resource, templat);
 256 }
 257
 258 static boolean
 259 sp_mpeg12_is_format_supported(struct pipe_video_context *vpipe,
 260                               enum pipe_format format,
 261                               unsigned usage,
 262                               unsigned geom)
 263 {
 264    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 265
 266    assert(vpipe);
 267
 268    /* XXX: Temporary; not all paths are NPOT-tested */
 269    if (geom & PIPE_TEXTURE_GEOM_NON_POWER_OF_TWO)
 270       return FALSE;
 271
 272
 273    return ctx->pipe->screen->is_format_supported(ctx->pipe->screen, format, PIPE_TEXTURE_2D,
 274                                                  0, usage, geom);
 275 }
 276
 277 static void
 278 sp_mpeg12_decode_macroblocks(struct pipe_video_context *vpipe,
 279                              struct pipe_surface *past,
 280                              struct pipe_surface *future,
 281                              unsigned num_macroblocks,
 282                              struct pipe_macroblock *macroblocks,
 283                              struct pipe_fence_handle **fence)
 284 {
 285    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 286    struct pipe_mpeg12_macroblock *mpeg12_macroblocks = (struct pipe_mpeg12_macroblock*)macroblocks;
 287    unsigned i;
 288
 289    assert(vpipe);
 290    assert(num_macroblocks);
 291    assert(macroblocks);
 292    assert(macroblocks->codec == PIPE_VIDEO_CODEC_MPEG12);
 293    assert(ctx->decode_target);
 294    assert(ctx->cur_buffer);
 295
 296    for ( i = 0; i < num_macroblocks; ++i ) {
 297       vl_vb_add_block(&ctx->cur_buffer->vertex_stream, &mpeg12_macroblocks[i],
 298                       ctx->mc_renderer.empty_block_mask);
 299       upload_buffer(ctx, ctx->cur_buffer, &mpeg12_macroblocks[i]);
 300    }
 301
 302    vl_mpeg12_mc_set_surfaces(&ctx->mc_renderer, &ctx->cur_buffer->mc,
 303                              ctx->decode_target, past, future, fence);
 304 }
 305
 306 static void
 307 sp_mpeg12_clear_render_target(struct pipe_video_context *vpipe,
 308                        struct pipe_surface *dst,
 309                        unsigned dstx, unsigned dsty,
 310                        unsigned width, unsigned height)
 311 {
 312    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 313    float rgba[4] = { 0, 0, 0, 0 };
 314
 315    assert(vpipe);
 316    assert(dst);
 317
 318    if (ctx->pipe->clear_render_target)
 319       ctx->pipe->clear_render_target(ctx->pipe, dst, rgba, dstx, dsty, width, height);
 320    else
 321       util_clear_render_target(ctx->pipe, dst, rgba, dstx, dsty, width, height);
 322 }
 323
 324 static void
 325 sp_mpeg12_resource_copy_region(struct pipe_video_context *vpipe,
 326                        struct pipe_surface *dst,
 327                        unsigned dstx, unsigned dsty,
 328                        struct pipe_surface *src,
 329                        unsigned srcx, unsigned srcy,
 330                        unsigned width, unsigned height)
 331 {
 332    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 333
 334    assert(vpipe);
 335    assert(dst);
 336
 337    struct pipe_box box;
 338    box.x = srcx;
 339    box.y = srcy;
 340    box.z = 0;
 341    box.width = width;
 342    box.height = height;
 343
 344    if (ctx->pipe->resource_copy_region)
 345       ctx->pipe->resource_copy_region(ctx->pipe, dst->texture, dst->u.tex.level,
 346                                       dstx, dsty, dst->u.tex.first_layer,
 347                                       src->texture, src->u.tex.level, &box);
 348    else
 349       util_resource_copy_region(ctx->pipe, dst->texture, dst->u.tex.level,
 350                                 dstx, dsty, dst->u.tex.first_layer,
 351                                 src->texture, src->u.tex.level, &box);
 352 }
 353
 354 static struct pipe_transfer*
 355 sp_mpeg12_get_transfer(struct pipe_video_context *vpipe,
 356                        struct pipe_resource *resource,
 357                        unsigned level,
 358                        unsigned usage,  /* a combination of PIPE_TRANSFER_x */
 359                        const struct pipe_box *box)
 360 {
 361    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 362
 363    assert(vpipe);
 364    assert(resource);
 365    assert(box);
 366
 367    return ctx->pipe->get_transfer(ctx->pipe, resource, level, usage, box);
 368 }
 369
 370 static void
 371 sp_mpeg12_transfer_destroy(struct pipe_video_context *vpipe,
 372                            struct pipe_transfer *transfer)
 373 {
 374    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 375
 376    assert(vpipe);
 377    assert(transfer);
 378
 379    ctx->pipe->transfer_destroy(ctx->pipe, transfer);
 380 }
 381
 382 static void*
 383 sp_mpeg12_transfer_map(struct pipe_video_context *vpipe,
 384                        struct pipe_transfer *transfer)
 385 {
 386    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 387
 388    assert(vpipe);
 389    assert(transfer);
 390
 391    return ctx->pipe->transfer_map(ctx->pipe, transfer);
 392 }
 393
 394 static void
 395 sp_mpeg12_transfer_flush_region(struct pipe_video_context *vpipe,
 396                                 struct pipe_transfer *transfer,
 397                                 const struct pipe_box *box)
 398 {
 399    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 400
 401    assert(vpipe);
 402    assert(transfer);
 403    assert(box);
 404
 405    ctx->pipe->transfer_flush_region(ctx->pipe, transfer, box);
 406 }
 407
 408 static void
 409 sp_mpeg12_transfer_unmap(struct pipe_video_context *vpipe,
 410                          struct pipe_transfer *transfer)
 411 {
 412    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 413
 414    assert(vpipe);
 415    assert(transfer);
 416
 417    ctx->pipe->transfer_unmap(ctx->pipe, transfer);
 418 }
 419
 420 static void
 421 sp_mpeg12_transfer_inline_write(struct pipe_video_context *vpipe,
 422                                 struct pipe_resource *resource,
 423                                 unsigned level,
 424                                 unsigned usage, /* a combination of PIPE_TRANSFER_x */
 425                                 const struct pipe_box *box,
 426                                 const void *data,
 427                                 unsigned stride,
 428                                 unsigned slice_stride)
 429 {
 430    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 431
 432    assert(vpipe);
 433    assert(resource);
 434    assert(box);
 435    assert(data);
 436    assert(ctx->pipe->transfer_inline_write);
 437
 438    ctx->pipe->transfer_inline_write(ctx->pipe, resource, level, usage,
 439                                     box, data, stride, slice_stride);
 440 }
 441
 442 static void
 443 sp_mpeg12_render_picture(struct pipe_video_context     *vpipe,
 444                          struct pipe_surface           *src_surface,
 445                          enum pipe_mpeg12_picture_type picture_type,
 446                          /*unsigned                    num_past_surfaces,
 447                          struct pipe_surface           *past_surfaces,
 448                          unsigned                      num_future_surfaces,
 449                          struct pipe_surface           *future_surfaces,*/
 450                          struct pipe_video_rect        *src_area,
 451                          struct pipe_surface           *dst_surface,
 452                          struct pipe_video_rect        *dst_area,
 453                          struct pipe_fence_handle      **fence)
 454 {
 455    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 456
 457    assert(vpipe);
 458    assert(src_surface);
 459    assert(src_area);
 460    assert(dst_surface);
 461    assert(dst_area);
 462
 463    flush_buffer(ctx);
 464
 465    vl_compositor_render(&ctx->compositor, src_surface,
 466                         picture_type, src_area, dst_surface, dst_area, fence);
 467 }
 468
 469 static void
 470 sp_mpeg12_set_picture_background(struct pipe_video_context *vpipe,
 471                                   struct pipe_surface *bg,
 472                                   struct pipe_video_rect *bg_src_rect)
 473 {
 474    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 475
 476    assert(vpipe);
 477    assert(bg);
 478    assert(bg_src_rect);
 479
 480    vl_compositor_set_background(&ctx->compositor, bg, bg_src_rect);
 481 }
 482
 483 static void
 484 sp_mpeg12_set_picture_layers(struct pipe_video_context *vpipe,
 485                              struct pipe_surface *layers[],
 486                              struct pipe_video_rect *src_rects[],
 487                              struct pipe_video_rect *dst_rects[],
 488                              unsigned num_layers)
 489 {
 490    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 491
 492    assert(vpipe);
 493    assert((layers && src_rects && dst_rects) ||
 494           (!layers && !src_rects && !dst_rects));
 495
 496    vl_compositor_set_layers(&ctx->compositor, layers, src_rects, dst_rects, num_layers);
 497 }
 498
 499 static void
 500 sp_mpeg12_set_decode_target(struct pipe_video_context *vpipe,
 501                             struct pipe_surface *dt)
 502 {
 503    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 504
 505    assert(vpipe);
 506    assert(dt);
 507
 508    if (ctx->decode_target != dt || ctx->cur_buffer == NULL) {
 509       rotate_buffer(ctx);
 510
 511       pipe_surface_reference(&ctx->decode_target, dt);
 512    }
 513 }
 514
 515 static void
 516 sp_mpeg12_set_csc_matrix(struct pipe_video_context *vpipe, const float *mat)
 517 {
 518    struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
 519
 520    assert(vpipe);
 521
 522    vl_compositor_set_csc_matrix(&ctx->compositor, mat);
 523 }
 524
 525 static bool
 526 init_pipe_state(struct sp_mpeg12_context *ctx)
 527 {
 528    struct pipe_rasterizer_state rast;
 529    struct pipe_blend_state blend;
 530    struct pipe_depth_stencil_alpha_state dsa;
 531    unsigned i;
 532
 533    assert(ctx);
 534
 535    memset(&rast, 0, sizeof rast);
 536    rast.flatshade = 1;
 537    rast.flatshade_first = 0;
 538    rast.light_twoside = 0;
 539    rast.front_ccw = 1;
 540    rast.cull_face = PIPE_FACE_NONE;
 541    rast.fill_back = PIPE_POLYGON_MODE_FILL;
 542    rast.fill_front = PIPE_POLYGON_MODE_FILL;
 543    rast.offset_point = 0;
 544    rast.offset_line = 0;
 545    rast.scissor = 0;
 546    rast.poly_smooth = 0;
 547    rast.poly_stipple_enable = 0;
 548    rast.sprite_coord_enable = 0;
 549    rast.point_size_per_vertex = 0;
 550    rast.multisample = 0;
 551    rast.line_smooth = 0;
 552    rast.line_stipple_enable = 0;
 553    rast.line_stipple_factor = 0;
 554    rast.line_stipple_pattern = 0;
 555    rast.line_last_pixel = 0;
 556    rast.line_width = 1;
 557    rast.point_smooth = 0;
 558    rast.point_quad_rasterization = 0;
 559    rast.point_size_per_vertex = 1;
 560    rast.offset_units = 1;
 561    rast.offset_scale = 1;
 562    rast.gl_rasterization_rules = 1;
 563
 564    ctx->rast = ctx->pipe->create_rasterizer_state(ctx->pipe, &rast);
 565    ctx->pipe->bind_rasterizer_state(ctx->pipe, ctx->rast);
 566
 567    memset(&blend, 0, sizeof blend);
 568
 569    blend.independent_blend_enable = 0;
 570    blend.rt[0].blend_enable = 0;
 571    blend.rt[0].rgb_func = PIPE_BLEND_ADD;
 572    blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
 573    blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
 574    blend.rt[0].alpha_func = PIPE_BLEND_ADD;
 575    blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
 576    blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
 577    blend.logicop_enable = 0;
 578    blend.logicop_func = PIPE_LOGICOP_CLEAR;
 579    /* Needed to allow color writes to FB, even if blending disabled */
 580    blend.rt[0].colormask = PIPE_MASK_RGBA;
 581    blend.dither = 0;
 582    ctx->blend = ctx->pipe->create_blend_state(ctx->pipe, &blend);
 583    ctx->pipe->bind_blend_state(ctx->pipe, ctx->blend);
 584
 585    memset(&dsa, 0, sizeof dsa);
 586    dsa.depth.enabled = 0;
 587    dsa.depth.writemask = 0;
 588    dsa.depth.func = PIPE_FUNC_ALWAYS;
 589    for (i = 0; i < 2; ++i) {
 590       dsa.stencil[i].enabled = 0;
 591       dsa.stencil[i].func = PIPE_FUNC_ALWAYS;
 592       dsa.stencil[i].fail_op = PIPE_STENCIL_OP_KEEP;
 593       dsa.stencil[i].zpass_op = PIPE_STENCIL_OP_KEEP;
 594       dsa.stencil[i].zfail_op = PIPE_STENCIL_OP_KEEP;
 595       dsa.stencil[i].valuemask = 0;
 596       dsa.stencil[i].writemask = 0;
 597    }
 598    dsa.alpha.enabled = 0;
 599    dsa.alpha.func = PIPE_FUNC_ALWAYS;
 600    dsa.alpha.ref_value = 0;
 601    ctx->dsa = ctx->pipe->create_depth_stencil_alpha_state(ctx->pipe, &dsa);
 602    ctx->pipe->bind_depth_stencil_alpha_state(ctx->pipe, ctx->dsa);
 603
 604    return true;
 605 }
 606
 607 static struct pipe_video_context *
 608 sp_mpeg12_create(struct pipe_context *pipe, enum pipe_video_profile profile,
 609                  enum pipe_video_chroma_format chroma_format,
 610                  unsigned width, unsigned height,
 611                  bool pot_buffers,
 612                  enum pipe_format decode_format)
 613 {
 614    struct pipe_resource *idct_matrix;
 615    unsigned buffer_width, buffer_height;
 616    unsigned chroma_width, chroma_height, chroma_blocks_x, chroma_blocks_y;
 617    struct sp_mpeg12_context *ctx;
 618
 619    assert(u_reduce_video_profile(profile) == PIPE_VIDEO_CODEC_MPEG12);
 620
 621    ctx = CALLOC_STRUCT(sp_mpeg12_context);
 622
 623    if (!ctx)
 624       return NULL;
 625
 626    /* TODO: Non-pot buffers untested, probably doesn't work without changes to texcoord generation, vert shader, etc */
 627    assert(pot_buffers);
 628
 629    buffer_width = pot_buffers ? util_next_power_of_two(width) : width;
 630    buffer_height = pot_buffers ? util_next_power_of_two(height) : height;
 631
 632    ctx->base.profile = profile;
 633    ctx->base.chroma_format = chroma_format;
 634    ctx->base.width = width;
 635    ctx->base.height = height;
 636
 637    ctx->base.screen = pipe->screen;
 638
 639    ctx->base.destroy = sp_mpeg12_destroy;
 640    ctx->base.get_param = sp_mpeg12_get_param;
 641    ctx->base.is_format_supported = sp_mpeg12_is_format_supported;
 642    ctx->base.create_surface = sp_mpeg12_create_surface;
 643    ctx->base.decode_macroblocks = sp_mpeg12_decode_macroblocks;
 644    ctx->base.render_picture = sp_mpeg12_render_picture;
 645    ctx->base.clear_render_target = sp_mpeg12_clear_render_target;
 646    ctx->base.resource_copy_region = sp_mpeg12_resource_copy_region;
 647    ctx->base.get_transfer = sp_mpeg12_get_transfer;
 648    ctx->base.transfer_destroy = sp_mpeg12_transfer_destroy;
 649    ctx->base.transfer_map = sp_mpeg12_transfer_map;
 650    ctx->base.transfer_flush_region = sp_mpeg12_transfer_flush_region;
 651    ctx->base.transfer_unmap = sp_mpeg12_transfer_unmap;
 652    if (pipe->transfer_inline_write)
 653       ctx->base.transfer_inline_write = sp_mpeg12_transfer_inline_write;
 654    ctx->base.set_picture_background = sp_mpeg12_set_picture_background;
 655    ctx->base.set_picture_layers = sp_mpeg12_set_picture_layers;
 656    ctx->base.set_decode_target = sp_mpeg12_set_decode_target;
 657    ctx->base.set_csc_matrix = sp_mpeg12_set_csc_matrix;
 658
 659    ctx->pipe = pipe;
 660    ctx->decode_format = decode_format;
 661
 662    ctx->quads = vl_vb_upload_quads(ctx->pipe, 2, 2);
 663    ctx->vertex_buffer_size = width / MACROBLOCK_WIDTH * height / MACROBLOCK_HEIGHT;
 664    ctx->vertex_elems_state = vl_vb_get_elems_state(ctx->pipe, true);
 665
 666    if (ctx->vertex_elems_state == NULL) {
 667       ctx->pipe->destroy(ctx->pipe);
 668       FREE(ctx);
 669       return NULL;
 670    }
 671
 672    if (!(idct_matrix = vl_idct_upload_matrix(ctx->pipe)))
 673       return false;
 674
 675    if (!vl_idct_init(&ctx->idct_y, ctx->pipe, buffer_width, buffer_height,
 676                      2, 2, TGSI_SWIZZLE_X, idct_matrix))
 677       return false;
 678
 679    if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
 680       chroma_width = buffer_width / 2;
 681       chroma_height = buffer_height / 2;
 682       chroma_blocks_x = 1;
 683       chroma_blocks_y = 1;
 684    } else if (chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
 685       chroma_width = buffer_width;
 686       chroma_height = buffer_height / 2;
 687       chroma_blocks_x = 2;
 688       chroma_blocks_y = 1;
 689    } else {
 690       chroma_width = buffer_width;
 691       chroma_height = buffer_height;
 692       chroma_blocks_x = 2;
 693       chroma_blocks_y = 2;
 694    }
 695
 696    if(!vl_idct_init(&ctx->idct_cr, ctx->pipe, chroma_width, chroma_height,
 697                     chroma_blocks_x, chroma_blocks_y, TGSI_SWIZZLE_Y, idct_matrix))
 698       return false;
 699
 700    if(!vl_idct_init(&ctx->idct_cb, ctx->pipe, chroma_width, chroma_height,
 701                     chroma_blocks_x, chroma_blocks_y, TGSI_SWIZZLE_Z, idct_matrix))
 702       return false;
 703
 704    if (!vl_mpeg12_mc_renderer_init(&ctx->mc_renderer, ctx->pipe,
 705                                    buffer_width, buffer_height, chroma_format)) {
 706       ctx->pipe->destroy(ctx->pipe);
 707       FREE(ctx);
 708       return NULL;
 709    }
 710
 711    ctx->buffer_map = util_new_keymap(sizeof(unsigned), -1, delete_buffer);
 712    if (!ctx->buffer_map) {
 713       vl_mpeg12_mc_renderer_cleanup(&ctx->mc_renderer);
 714       ctx->pipe->destroy(ctx->pipe);
 715       FREE(ctx);
 716       return NULL;
 717    }
 718
 719    if (!vl_compositor_init(&ctx->compositor, ctx->pipe)) {
 720       util_delete_keymap(ctx->buffer_map, ctx);
 721       vl_mpeg12_mc_renderer_cleanup(&ctx->mc_renderer);
 722       ctx->pipe->destroy(ctx->pipe);
 723       FREE(ctx);
 724       return NULL;
 725    }
 726
 727    if (!init_pipe_state(ctx)) {
 728       vl_compositor_cleanup(&ctx->compositor);
 729       util_delete_keymap(ctx->buffer_map, ctx);
 730       vl_mpeg12_mc_renderer_cleanup(&ctx->mc_renderer);
 731       ctx->pipe->destroy(ctx->pipe);
 732       FREE(ctx);
 733       return NULL;
 734    }
 735
 736    return &ctx->base;
 737 }
 738
 739 struct pipe_video_context *
 740 sp_video_create(struct pipe_screen *screen, enum pipe_video_profile profile,
 741                 enum pipe_video_chroma_format chroma_format,
 742                 unsigned width, unsigned height, void *priv)
 743 {
 744    struct pipe_context *pipe;
 745
 746    assert(screen);
 747    assert(width && height);
 748
 749    pipe = screen->context_create(screen, NULL);
 750    if (!pipe)
 751       return NULL;
 752
 753    /* TODO: Use slice buffering for softpipe when implemented, no advantage to buffering an entire picture with softpipe */
 754    return sp_video_create_ex(pipe, profile,
 755                              chroma_format,
 756                              width, height,
 757                              true,
 758                              PIPE_FORMAT_XYUV);
 759 }
 760
 761 struct pipe_video_context *
 762 sp_video_create_ex(struct pipe_context *pipe, enum pipe_video_profile profile,
 763                    enum pipe_video_chroma_format chroma_format,
 764                    unsigned width, unsigned height,
 765                    bool pot_buffers,
 766                    enum pipe_format decode_format)
 767 {
 768    assert(pipe);
 769    assert(width && height);
 770
 771    switch (u_reduce_video_profile(profile)) {
 772       case PIPE_VIDEO_CODEC_MPEG12:
 773          return sp_mpeg12_create(pipe, profile,
 774                                  chroma_format,
 775                                  width, height,
 776                                  pot_buffers,
 777                                  decode_format);
 778       default:
 779          return NULL;
 780    }
 781 }