src/gallium/auxiliary/vl/vl_mpeg12_decoder.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 <math.h>
  29 #include <assert.h>
  30
  31 #include <util/u_memory.h>
  32 #include <util/u_rect.h>
  33 #include <util/u_video.h>
  34
  35 #include "vl_mpeg12_decoder.h"
  36 #include "vl_defines.h"
  37
  38 #define SCALE_FACTOR_SNORM (32768.0f / 256.0f)
  39 #define SCALE_FACTOR_SSCALED (1.0f / 256.0f)
  40
  41 static const unsigned const_empty_block_mask_420[3][2][2] = {
  42    { { 0x20, 0x10 },  { 0x08, 0x04 } },
  43    { { 0x02, 0x02 },  { 0x02, 0x02 } },
  44    { { 0x01, 0x01 },  { 0x01, 0x01 } }
  45 };
  46
  47 static const enum pipe_format const_idct_source_formats[] = {
  48    PIPE_FORMAT_R16G16B16A16_SNORM,
  49    PIPE_FORMAT_R16G16B16A16_SSCALED
  50 };
  51
  52 static const unsigned num_idct_source_formats =
  53    sizeof(const_idct_source_formats) / sizeof(enum pipe_format);
  54
  55 static const enum pipe_format const_idct_intermediate_formats[] = {
  56    PIPE_FORMAT_R16G16B16A16_FLOAT,
  57    PIPE_FORMAT_R16G16B16A16_SNORM,
  58    PIPE_FORMAT_R16G16B16A16_SSCALED,
  59    PIPE_FORMAT_R32G32B32A32_FLOAT
  60 };
  61
  62 static const unsigned num_idct_intermediate_formats =
  63    sizeof(const_idct_intermediate_formats) / sizeof(enum pipe_format);
  64
  65 static const enum pipe_format const_mc_source_formats[] = {
  66    PIPE_FORMAT_R16_SNORM,
  67    PIPE_FORMAT_R16_SSCALED
  68 };
  69
  70 static const unsigned num_mc_source_formats =
  71    sizeof(const_mc_source_formats) / sizeof(enum pipe_format);
  72
  73 static void
  74 map_buffers(struct vl_mpeg12_decoder *ctx, struct vl_mpeg12_buffer *buffer)
  75 {
  76    struct pipe_sampler_view **sampler_views;
  77    struct pipe_resource *tex;
  78    unsigned i;
  79
  80    assert(ctx && buffer);
  81
  82    if (ctx->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
  83       sampler_views = buffer->idct_source->get_sampler_views(buffer->idct_source);
  84    else
  85       sampler_views = buffer->mc_source->get_sampler_views(buffer->mc_source);
  86    assert(sampler_views);
  87
  88    for (i = 0; i < VL_MAX_PLANES; ++i) {
  89       tex = sampler_views[i]->texture;
  90
  91       struct pipe_box rect =
  92       {
  93          0, 0, 0,
  94          tex->width0,
  95          tex->height0,
  96          1
  97       };
  98
  99       buffer->tex_transfer[i] = ctx->pipe->get_transfer
 100       (
 101          ctx->pipe, tex,
 102          0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD,
 103          &rect
 104       );
 105
 106       buffer->texels[i] = ctx->pipe->transfer_map(ctx->pipe, buffer->tex_transfer[i]);
 107    }
 108 }
 109
 110 static void
 111 upload_block(struct vl_mpeg12_buffer *buffer, unsigned plane,
 112              unsigned x, unsigned y, short *block,
 113              bool intra, enum pipe_mpeg12_dct_type type)
 114 {
 115    unsigned tex_pitch;
 116    short *texels;
 117
 118    unsigned i;
 119
 120    assert(buffer);
 121    assert(block);
 122
 123    vl_vb_add_ycbcr(&buffer->vertex_stream, plane, x, y, intra, type);
 124
 125    tex_pitch = buffer->tex_transfer[plane]->stride / sizeof(short);
 126    texels = buffer->texels[plane] + y * tex_pitch * BLOCK_HEIGHT + x * BLOCK_WIDTH;
 127
 128    for (i = 0; i < BLOCK_HEIGHT; ++i)
 129       memcpy(texels + i * tex_pitch, block + i * BLOCK_WIDTH, BLOCK_WIDTH * sizeof(short));
 130 }
 131
 132 static void
 133 upload_buffer(struct vl_mpeg12_decoder *ctx,
 134               struct vl_mpeg12_buffer *buffer,
 135               struct pipe_mpeg12_macroblock *mb)
 136 {
 137    short *blocks;
 138    unsigned tb, x, y;
 139
 140    assert(ctx);
 141    assert(buffer);
 142    assert(mb);
 143
 144    blocks = mb->blocks;
 145
 146    for (y = 0; y < 2; ++y) {
 147       for (x = 0; x < 2; ++x, ++tb) {
 148          if (mb->cbp & (*ctx->empty_block_mask)[0][y][x]) {
 149             upload_block(buffer, 0, mb->mbx * 2 + x, mb->mby * 2 + y, blocks,
 150                          mb->dct_intra, mb->dct_type);
 151             blocks += BLOCK_WIDTH * BLOCK_HEIGHT;
 152          }
 153       }
 154    }
 155
 156    /* TODO: Implement 422, 444 */
 157    assert(ctx->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
 158
 159    for (tb = 1; tb < 3; ++tb) {
 160       if (mb->cbp & (*ctx->empty_block_mask)[tb][0][0]) {
 161          upload_block(buffer, tb, mb->mbx, mb->mby, blocks,
 162                       mb->dct_intra, mb->dct_type);
 163          blocks += BLOCK_WIDTH * BLOCK_HEIGHT;
 164       }
 165    }
 166 }
 167
 168 static void
 169 unmap_buffers(struct vl_mpeg12_decoder *ctx, struct vl_mpeg12_buffer *buffer)
 170 {
 171    unsigned i;
 172
 173    assert(ctx && buffer);
 174
 175    for (i = 0; i < VL_MAX_PLANES; ++i) {
 176       ctx->pipe->transfer_unmap(ctx->pipe, buffer->tex_transfer[i]);
 177       ctx->pipe->transfer_destroy(ctx->pipe, buffer->tex_transfer[i]);
 178    }
 179 }
 180
 181 static void
 182 cleanup_idct_buffer(struct vl_mpeg12_buffer *buf)
 183 {
 184    struct vl_mpeg12_decoder *dec;
 185    assert(buf);
 186
 187    dec = (struct vl_mpeg12_decoder*)buf->base.decoder;
 188    assert(dec);
 189
 190    buf->idct_source->destroy(buf->idct_source);
 191    buf->idct_intermediate->destroy(buf->idct_intermediate);
 192    vl_idct_cleanup_buffer(&dec->idct_y, &buf->idct[0]);
 193    vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[1]);
 194    vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[2]);
 195 }
 196
 197 static void
 198 vl_mpeg12_buffer_destroy(struct pipe_video_decode_buffer *buffer)
 199 {
 200    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
 201    struct vl_mpeg12_decoder *dec;
 202    unsigned i;
 203
 204    assert(buf);
 205
 206    dec = (struct vl_mpeg12_decoder*)buf->base.decoder;
 207    assert(dec);
 208
 209    if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
 210       cleanup_idct_buffer(buf);
 211
 212    buf->mc_source->destroy(buf->mc_source);
 213    vl_vb_cleanup(&buf->vertex_stream);
 214    for (i = 0; i < VL_MAX_PLANES; ++i)
 215       vl_mc_cleanup_buffer(&buf->mc[i]);
 216
 217    FREE(buf);
 218 }
 219
 220 static void
 221 vl_mpeg12_buffer_map(struct pipe_video_decode_buffer *buffer)
 222 {
 223    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
 224    struct vl_mpeg12_decoder *dec;
 225    assert(buf);
 226
 227    dec = (struct vl_mpeg12_decoder *)buf->base.decoder;
 228    assert(dec);
 229
 230    vl_vb_map(&buf->vertex_stream, dec->pipe);
 231    map_buffers(dec, buf);
 232 }
 233
 234 static void
 235 vl_mpeg12_buffer_add_macroblocks(struct pipe_video_decode_buffer *buffer,
 236                                  unsigned num_macroblocks,
 237                                  struct pipe_macroblock *macroblocks)
 238 {
 239    struct pipe_mpeg12_macroblock *mb = (struct pipe_mpeg12_macroblock*)macroblocks;
 240    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
 241    struct vl_mpeg12_decoder *dec;
 242    unsigned i;
 243
 244    assert(buf);
 245
 246    dec =  (struct vl_mpeg12_decoder*)buf->base.decoder;
 247    assert(dec);
 248
 249    assert(num_macroblocks);
 250    assert(macroblocks);
 251    assert(macroblocks->codec == PIPE_VIDEO_CODEC_MPEG12);
 252
 253    for ( i = 0; i < num_macroblocks; ++i ) {
 254       vl_vb_add_block(&buf->vertex_stream, &mb[i]);
 255       upload_buffer(dec, buf, &mb[i]);
 256    }
 257 }
 258
 259 static void
 260 vl_mpeg12_buffer_unmap(struct pipe_video_decode_buffer *buffer)
 261 {
 262    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
 263    struct vl_mpeg12_decoder *dec;
 264    assert(buf);
 265
 266    dec = (struct vl_mpeg12_decoder *)buf->base.decoder;
 267    assert(dec);
 268
 269    vl_vb_unmap(&buf->vertex_stream, dec->pipe);
 270    unmap_buffers(dec, buf);
 271 }
 272
 273 static void
 274 vl_mpeg12_destroy(struct pipe_video_decoder *decoder)
 275 {
 276    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
 277
 278    assert(decoder);
 279
 280    /* Asserted in softpipe_delete_fs_state() for some reason */
 281    dec->pipe->bind_vs_state(dec->pipe, NULL);
 282    dec->pipe->bind_fs_state(dec->pipe, NULL);
 283
 284    dec->pipe->delete_depth_stencil_alpha_state(dec->pipe, dec->dsa);
 285
 286    vl_mc_cleanup(&dec->mc_y);
 287    vl_mc_cleanup(&dec->mc_c);
 288
 289    if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
 290       vl_idct_cleanup(&dec->idct_y);
 291       vl_idct_cleanup(&dec->idct_c);
 292    }
 293
 294    dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves_ycbcr);
 295    dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves_mv);
 296
 297    pipe_resource_reference(&dec->quads.buffer, NULL);
 298    pipe_resource_reference(&dec->pos.buffer, NULL);
 299
 300    FREE(dec);
 301 }
 302
 303 static bool
 304 init_idct_buffer(struct vl_mpeg12_buffer *buffer)
 305 {
 306    enum pipe_format formats[3];
 307
 308    struct pipe_sampler_view **idct_source_sv, **idct_intermediate_sv;
 309    struct pipe_surface **idct_surfaces;
 310
 311    struct vl_mpeg12_decoder *dec;
 312
 313    unsigned i;
 314
 315    assert(buffer);
 316
 317    dec = (struct vl_mpeg12_decoder*)buffer->base.decoder;
 318
 319    formats[0] = formats[1] = formats[2] = dec->idct_source_format;
 320    buffer->idct_source = vl_video_buffer_init(dec->base.context, dec->pipe,
 321                                               dec->base.width / 4, dec->base.height, 1,
 322                                               dec->base.chroma_format,
 323                                               formats, PIPE_USAGE_STREAM);
 324    if (!buffer->idct_source)
 325       goto error_source;
 326
 327    formats[0] = formats[1] = formats[2] = dec->idct_intermediate_format;
 328    buffer->idct_intermediate = vl_video_buffer_init(dec->base.context, dec->pipe,
 329                                                     dec->base.width / dec->nr_of_idct_render_targets,
 330                                                     dec->base.height / 4, dec->nr_of_idct_render_targets,
 331                                                     dec->base.chroma_format,
 332                                                     formats, PIPE_USAGE_STATIC);
 333
 334    if (!buffer->idct_intermediate)
 335       goto error_intermediate;
 336
 337    idct_source_sv = buffer->idct_source->get_sampler_views(buffer->idct_source);
 338    if (!idct_source_sv)
 339       goto error_source_sv;
 340
 341    idct_intermediate_sv = buffer->idct_intermediate->get_sampler_views(buffer->idct_intermediate);
 342    if (!idct_intermediate_sv)
 343       goto error_intermediate_sv;
 344
 345    idct_surfaces = buffer->mc_source->get_surfaces(buffer->mc_source);
 346    if (!idct_surfaces)
 347       goto error_surfaces;
 348
 349    for (i = 0; i < 3; ++i)
 350       if (!vl_idct_init_buffer(i == 0 ? &dec->idct_y : &dec->idct_c,
 351                                &buffer->idct[i], idct_source_sv[i],
 352                                idct_intermediate_sv[i], idct_surfaces[i]))
 353          goto error_plane;
 354
 355    return true;
 356
 357 error_plane:
 358    for (; i > 0; --i)
 359       vl_idct_cleanup_buffer(i == 1 ? &dec->idct_c : &dec->idct_y, &buffer->idct[i - 1]);
 360
 361 error_surfaces:
 362 error_intermediate_sv:
 363 error_source_sv:
 364    buffer->idct_intermediate->destroy(buffer->idct_intermediate);
 365
 366 error_intermediate:
 367    buffer->idct_source->destroy(buffer->idct_source);
 368
 369 error_source:
 370    return false;
 371 }
 372
 373 static struct pipe_video_decode_buffer *
 374 vl_mpeg12_create_buffer(struct pipe_video_decoder *decoder)
 375 {
 376    enum pipe_format formats[3];
 377
 378    struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
 379    struct vl_mpeg12_buffer *buffer;
 380
 381    struct pipe_sampler_view **mc_source_sv;
 382
 383    assert(dec);
 384
 385    buffer = CALLOC_STRUCT(vl_mpeg12_buffer);
 386    if (buffer == NULL)
 387       return NULL;
 388
 389    buffer->base.decoder = decoder;
 390    buffer->base.destroy = vl_mpeg12_buffer_destroy;
 391    buffer->base.map = vl_mpeg12_buffer_map;
 392    buffer->base.add_macroblocks = vl_mpeg12_buffer_add_macroblocks;
 393    buffer->base.unmap = vl_mpeg12_buffer_unmap;
 394
 395    vl_vb_init(&buffer->vertex_stream, dec->pipe,
 396               dec->base.width / MACROBLOCK_WIDTH,
 397               dec->base.height / MACROBLOCK_HEIGHT);
 398
 399    formats[0] = formats[1] = formats[2] =dec->mc_source_format;
 400    buffer->mc_source = vl_video_buffer_init(dec->base.context, dec->pipe,
 401                                             dec->base.width, dec->base.height, 1,
 402                                             dec->base.chroma_format,
 403                                             formats, PIPE_USAGE_STATIC);
 404
 405    if (!buffer->mc_source)
 406       goto error_mc_source;
 407
 408    if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
 409       if (!init_idct_buffer(buffer))
 410          goto error_idct;
 411
 412    mc_source_sv = buffer->mc_source->get_sampler_views(buffer->mc_source);
 413    if (!mc_source_sv)
 414       goto error_mc_source_sv;
 415
 416    if(!vl_mc_init_buffer(&dec->mc_y, &buffer->mc[0], mc_source_sv[0]))
 417       goto error_mc_y;
 418
 419    if(!vl_mc_init_buffer(&dec->mc_c, &buffer->mc[1], mc_source_sv[1]))
 420       goto error_mc_cb;
 421
 422    if(!vl_mc_init_buffer(&dec->mc_c, &buffer->mc[2], mc_source_sv[2]))
 423       goto error_mc_cr;
 424
 425    return &buffer->base;
 426
 427 error_mc_cr:
 428    vl_mc_cleanup_buffer(&buffer->mc[1]);
 429
 430 error_mc_cb:
 431    vl_mc_cleanup_buffer(&buffer->mc[0]);
 432
 433 error_mc_y:
 434 error_mc_source_sv:
 435    if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
 436       cleanup_idct_buffer(buffer);
 437
 438 error_idct:
 439    buffer->mc_source->destroy(buffer->mc_source);
 440
 441 error_mc_source:
 442    vl_vb_cleanup(&buffer->vertex_stream);
 443
 444 error_vertex_stream:
 445    FREE(buffer);
 446    return NULL;
 447 }
 448
 449 static void
 450 vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
 451                                struct pipe_video_buffer *refs[2],
 452                                struct pipe_video_buffer *dst,
 453                                struct pipe_fence_handle **fence)
 454 {
 455    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer *)buffer;
 456    struct vl_mpeg12_decoder *dec;
 457
 458    struct pipe_sampler_view **sv[2];
 459    struct pipe_surface **surfaces;
 460
 461    struct pipe_vertex_buffer vb[3];
 462
 463    unsigned i, j;
 464
 465    assert(buf);
 466
 467    dec = (struct vl_mpeg12_decoder *)buf->base.decoder;
 468    assert(dec);
 469
 470    for (i = 0; i < 2; ++i)
 471       sv[i] = refs[i] ? refs[i]->get_sampler_views(refs[i]) : NULL;
 472
 473    surfaces = dst->get_surfaces(dst);
 474
 475    vb[0] = dec->quads;
 476    vb[1] = dec->pos;
 477
 478    dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves_mv);
 479    for (i = 0; i < VL_MAX_PLANES; ++i) {
 480       vl_mc_set_surface(&buf->mc[i], surfaces[i]);
 481
 482       for (j = 0; j < 2; ++j) {
 483          if (sv[j] == NULL) continue;
 484
 485          vb[2] = vl_vb_get_mv(&buf->vertex_stream, j);;
 486          dec->pipe->set_vertex_buffers(dec->pipe, 3, vb);
 487
 488          vl_mc_render_ref(&buf->mc[i], sv[j][i]);
 489       }
 490    }
 491
 492    dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves_ycbcr);
 493    for (i = 0; i < VL_MAX_PLANES; ++i) {
 494       unsigned num_instances = vl_vb_restart(&buf->vertex_stream, i);
 495
 496       vb[1] = vl_vb_get_ycbcr(&buf->vertex_stream, i);
 497       dec->pipe->set_vertex_buffers(dec->pipe, 2, vb);
 498
 499       if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
 500          vl_idct_flush(i == 0 ? &dec->idct_y : &dec->idct_c, &buf->idct[i], num_instances);
 501
 502       vl_mc_render_ycbcr(&buf->mc[i], num_instances);
 503    }
 504
 505    dec->pipe->flush(dec->pipe, fence);
 506 }
 507
 508 static void
 509 vl_mpeg12_decoder_clear_buffer(struct pipe_video_decode_buffer *buffer)
 510 {
 511    struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer *)buffer;
 512    unsigned i;
 513
 514    assert(buf);
 515
 516    for (i = 0; i < VL_MAX_PLANES; ++i)
 517       vl_vb_restart(&buf->vertex_stream, i);
 518 }
 519
 520 static bool
 521 init_pipe_state(struct vl_mpeg12_decoder *dec)
 522 {
 523    struct pipe_depth_stencil_alpha_state dsa;
 524    unsigned i;
 525
 526    assert(dec);
 527
 528    memset(&dsa, 0, sizeof dsa);
 529    dsa.depth.enabled = 0;
 530    dsa.depth.writemask = 0;
 531    dsa.depth.func = PIPE_FUNC_ALWAYS;
 532    for (i = 0; i < 2; ++i) {
 533       dsa.stencil[i].enabled = 0;
 534       dsa.stencil[i].func = PIPE_FUNC_ALWAYS;
 535       dsa.stencil[i].fail_op = PIPE_STENCIL_OP_KEEP;
 536       dsa.stencil[i].zpass_op = PIPE_STENCIL_OP_KEEP;
 537       dsa.stencil[i].zfail_op = PIPE_STENCIL_OP_KEEP;
 538       dsa.stencil[i].valuemask = 0;
 539       dsa.stencil[i].writemask = 0;
 540    }
 541    dsa.alpha.enabled = 0;
 542    dsa.alpha.func = PIPE_FUNC_ALWAYS;
 543    dsa.alpha.ref_value = 0;
 544    dec->dsa = dec->pipe->create_depth_stencil_alpha_state(dec->pipe, &dsa);
 545    dec->pipe->bind_depth_stencil_alpha_state(dec->pipe, dec->dsa);
 546
 547    return true;
 548 }
 549
 550 static enum pipe_format
 551 find_first_supported_format(struct vl_mpeg12_decoder *dec,
 552                             const enum pipe_format formats[],
 553                             unsigned num_formats,
 554                             enum pipe_texture_target target)
 555 {
 556    struct pipe_screen *screen;
 557    unsigned i;
 558
 559    assert(dec);
 560
 561    screen = dec->pipe->screen;
 562
 563    for (i = 0; i < num_formats; ++i)
 564       if (screen->is_format_supported(dec->pipe->screen, formats[i], target, 1,
 565                                       PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET))
 566          return formats[i];
 567
 568    return PIPE_FORMAT_NONE;
 569 }
 570
 571 static bool
 572 init_idct(struct vl_mpeg12_decoder *dec, unsigned buffer_width, unsigned buffer_height)
 573 {
 574    unsigned chroma_width, chroma_height;
 575    struct pipe_sampler_view *matrix, *transpose;
 576    float matrix_scale, transpose_scale;
 577
 578    dec->nr_of_idct_render_targets = dec->pipe->screen->get_param(dec->pipe->screen, PIPE_CAP_MAX_RENDER_TARGETS);
 579
 580    // more than 4 render targets usually doesn't makes any seens
 581    dec->nr_of_idct_render_targets = MIN2(dec->nr_of_idct_render_targets, 4);
 582
 583    dec->idct_source_format = find_first_supported_format(dec, const_idct_source_formats,
 584                                                          num_idct_source_formats, PIPE_TEXTURE_2D);
 585
 586    if (dec->idct_source_format == PIPE_FORMAT_NONE)
 587       return false;
 588
 589    dec->idct_intermediate_format = find_first_supported_format(dec, const_idct_intermediate_formats,
 590                                                                num_idct_intermediate_formats, PIPE_TEXTURE_3D);
 591
 592    if (dec->idct_intermediate_format == PIPE_FORMAT_NONE)
 593       return false;
 594
 595    switch (dec->idct_source_format) {
 596    case PIPE_FORMAT_R16G16B16A16_SSCALED:
 597       matrix_scale = SCALE_FACTOR_SSCALED;
 598       break;
 599
 600    case PIPE_FORMAT_R16G16B16A16_SNORM:
 601       matrix_scale = SCALE_FACTOR_SNORM;
 602       break;
 603
 604    default:
 605       assert(0);
 606       return false;
 607    }
 608
 609    if (dec->idct_intermediate_format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
 610        dec->idct_intermediate_format == PIPE_FORMAT_R32G32B32A32_FLOAT)
 611       transpose_scale = 1.0f;
 612    else
 613       transpose_scale = matrix_scale = sqrt(matrix_scale);
 614
 615    if (dec->mc_source_format == PIPE_FORMAT_R16_SSCALED)
 616       transpose_scale /= SCALE_FACTOR_SSCALED;
 617
 618    if (!(matrix = vl_idct_upload_matrix(dec->pipe, matrix_scale)))
 619       goto error_matrix;
 620
 621    if (matrix_scale != transpose_scale) {
 622       if (!(transpose = vl_idct_upload_matrix(dec->pipe, transpose_scale)))
 623          goto error_transpose;
 624    } else
 625       pipe_sampler_view_reference(&transpose, matrix);
 626
 627    if (!vl_idct_init(&dec->idct_y, dec->pipe, buffer_width, buffer_height,
 628                      dec->nr_of_idct_render_targets, matrix, transpose))
 629       goto error_y;
 630
 631    if (dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
 632       chroma_width = buffer_width / 2;
 633       chroma_height = buffer_height / 2;
 634    } else if (dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
 635       chroma_width = buffer_width;
 636       chroma_height = buffer_height / 2;
 637    } else {
 638       chroma_width = buffer_width;
 639       chroma_height = buffer_height;
 640    }
 641
 642    if(!vl_idct_init(&dec->idct_c, dec->pipe, chroma_width, chroma_height,
 643                     dec->nr_of_idct_render_targets, matrix, transpose))
 644       goto error_c;
 645
 646    pipe_sampler_view_reference(&matrix, NULL);
 647    pipe_sampler_view_reference(&transpose, NULL);
 648    return true;
 649
 650 error_c:
 651    vl_idct_cleanup(&dec->idct_y);
 652
 653 error_y:
 654    pipe_sampler_view_reference(&transpose, NULL);
 655
 656 error_transpose:
 657    pipe_sampler_view_reference(&matrix, NULL);
 658
 659 error_matrix:
 660    return false;
 661 }
 662
 663 struct pipe_video_decoder *
 664 vl_create_mpeg12_decoder(struct pipe_video_context *context,
 665                          struct pipe_context *pipe,
 666                          enum pipe_video_profile profile,
 667                          enum pipe_video_entrypoint entrypoint,
 668                          enum pipe_video_chroma_format chroma_format,
 669                          unsigned width, unsigned height)
 670 {
 671    struct vl_mpeg12_decoder *dec;
 672    float mc_scale;
 673
 674    assert(u_reduce_video_profile(profile) == PIPE_VIDEO_CODEC_MPEG12);
 675
 676    dec = CALLOC_STRUCT(vl_mpeg12_decoder);
 677
 678    if (!dec)
 679       return NULL;
 680
 681    dec->base.context = context;
 682    dec->base.profile = profile;
 683    dec->base.entrypoint = entrypoint;
 684    dec->base.chroma_format = chroma_format;
 685    dec->base.width = width;
 686    dec->base.height = height;
 687
 688    dec->base.destroy = vl_mpeg12_destroy;
 689    dec->base.create_buffer = vl_mpeg12_create_buffer;
 690    dec->base.flush_buffer = vl_mpeg12_decoder_flush_buffer;
 691    dec->base.clear_buffer = vl_mpeg12_decoder_clear_buffer;
 692
 693    dec->base.width = align(width, MACROBLOCK_WIDTH);
 694    dec->base.height = align(height, MACROBLOCK_HEIGHT);
 695
 696    dec->pipe = pipe;
 697
 698    dec->quads = vl_vb_upload_quads(dec->pipe);
 699    dec->pos = vl_vb_upload_pos(
 700       dec->pipe,
 701       dec->base.width / MACROBLOCK_WIDTH,
 702       dec->base.height / MACROBLOCK_HEIGHT
 703    );
 704
 705    dec->ves_ycbcr = vl_vb_get_ves_ycbcr(dec->pipe);
 706    dec->ves_mv = vl_vb_get_ves_mv(dec->pipe);
 707
 708    /* TODO: Implement 422, 444 */
 709    assert(dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
 710    dec->empty_block_mask = &const_empty_block_mask_420;
 711
 712    dec->mc_source_format = find_first_supported_format(dec, const_mc_source_formats,
 713                                                        num_mc_source_formats, PIPE_TEXTURE_3D);
 714
 715    if (dec->mc_source_format == PIPE_FORMAT_NONE)
 716       return NULL;
 717
 718    if (entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
 719       if (!init_idct(dec, dec->base.width, dec->base.height))
 720          goto error_idct;
 721       if (dec->mc_source_format == PIPE_FORMAT_R16_SSCALED)
 722          mc_scale = SCALE_FACTOR_SSCALED;
 723       else
 724          mc_scale = 1.0f;
 725    } else {
 726       switch (dec->mc_source_format) {
 727       case PIPE_FORMAT_R16_SNORM:
 728          mc_scale = SCALE_FACTOR_SNORM;
 729          break;
 730
 731       case PIPE_FORMAT_R16_SSCALED:
 732          mc_scale = SCALE_FACTOR_SSCALED;
 733          break;
 734
 735       default:
 736          assert(0);
 737          return NULL;
 738       }
 739    }
 740
 741    if (!vl_mc_init(&dec->mc_y, dec->pipe, dec->base.width, dec->base.height, MACROBLOCK_HEIGHT, mc_scale))
 742       goto error_mc_y;
 743
 744    // TODO
 745    if (!vl_mc_init(&dec->mc_c, dec->pipe, dec->base.width, dec->base.height, BLOCK_HEIGHT, mc_scale))
 746       goto error_mc_c;
 747
 748    if (!init_pipe_state(dec))
 749       goto error_pipe_state;
 750
 751    return &dec->base;
 752
 753 error_pipe_state:
 754    vl_mc_cleanup(&dec->mc_c);
 755
 756 error_mc_c:
 757    vl_mc_cleanup(&dec->mc_y);
 758
 759 error_mc_y:
 760    if (entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
 761       vl_idct_cleanup(&dec->idct_y);
 762       vl_idct_cleanup(&dec->idct_c);
 763    }
 764
 765 error_idct:
 766    FREE(dec);
 767    return NULL;
 768 }