vl_mpeg12_decoder.c revision 2e6274fc3b123e7de695038054b5cbd20b11559a 
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
41static const enum pipe_format const_zscan_source_formats[] = {
42   PIPE_FORMAT_R16_SNORM,
43   PIPE_FORMAT_R16_SSCALED
44};
45
46static const unsigned num_zscan_source_formats =
47   sizeof(const_zscan_source_formats) / sizeof(enum pipe_format);
48
49static const enum pipe_format const_idct_source_formats[] = {
50   PIPE_FORMAT_R16G16B16A16_SNORM,
51   PIPE_FORMAT_R16G16B16A16_SSCALED
52};
53
54static const unsigned num_idct_source_formats =
55   sizeof(const_idct_source_formats) / sizeof(enum pipe_format);
56
57static const enum pipe_format const_idct_intermediate_formats[] = {
58   PIPE_FORMAT_R16G16B16A16_FLOAT,
59   PIPE_FORMAT_R16G16B16A16_SNORM,
60   PIPE_FORMAT_R16G16B16A16_SSCALED,
61   PIPE_FORMAT_R32G32B32A32_FLOAT
62};
63
64static const unsigned num_idct_intermediate_formats =
65   sizeof(const_idct_intermediate_formats) / sizeof(enum pipe_format);
66
67static const enum pipe_format const_mc_source_formats[] = {
68   PIPE_FORMAT_R16_SNORM,
69   PIPE_FORMAT_R16_SSCALED
70};
71
72static const unsigned num_mc_source_formats =
73   sizeof(const_mc_source_formats) / sizeof(enum pipe_format);
74
75static bool
76init_zscan_buffer(struct vl_mpeg12_buffer *buffer)
77{
78   enum pipe_format formats[3];
79
80   struct pipe_sampler_view **source;
81   struct pipe_surface **destination;
82
83   struct vl_mpeg12_decoder *dec;
84
85   unsigned i;
86
87   assert(buffer);
88
89   dec = (struct vl_mpeg12_decoder*)buffer->base.decoder;
90
91   formats[0] = formats[1] = formats[2] = dec->zscan_source_format;
92   buffer->zscan_source = vl_video_buffer_init(dec->base.context, dec->pipe,
93                                               dec->blocks_per_line * BLOCK_WIDTH * BLOCK_HEIGHT,
94                                               dec->max_blocks / dec->blocks_per_line,
95                                               1, PIPE_VIDEO_CHROMA_FORMAT_444,
96                                               formats, PIPE_USAGE_STATIC);
97   if (!buffer->zscan_source)
98      goto error_source;
99
100   source = buffer->zscan_source->get_sampler_views(buffer->zscan_source);
101   if (!source)
102      goto error_sampler;
103
104   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
105      destination = buffer->idct_source->get_surfaces(buffer->idct_source);
106   else
107      destination = buffer->mc_source->get_surfaces(buffer->mc_source);
108
109   if (!destination)
110      goto error_surface;
111
112   for (i = 0; i < VL_MAX_PLANES; ++i)
113      if (!vl_zscan_init_buffer(i == 0 ? &dec->zscan_y : &dec->zscan_c,
114                                &buffer->zscan[i], source[i], destination[i]))
115         goto error_plane;
116
117   return true;
118
119error_plane:
120   for (; i > 0; --i)
121      vl_zscan_cleanup_buffer(&buffer->zscan[i - 1]);
122
123error_surface:
124error_sampler:
125   buffer->zscan_source->destroy(buffer->zscan_source);
126
127error_source:
128   return false;
129}
130
131static void
132cleanup_zscan_buffer(struct vl_mpeg12_buffer *buffer)
133{
134   unsigned i;
135
136   assert(buffer);
137
138   for (i = 0; i < VL_MAX_PLANES; ++i)
139      vl_zscan_cleanup_buffer(&buffer->zscan[i]);
140   buffer->zscan_source->destroy(buffer->zscan_source);
141}
142
143static bool
144init_idct_buffer(struct vl_mpeg12_buffer *buffer)
145{
146   enum pipe_format formats[3];
147
148   struct pipe_sampler_view **idct_source_sv, **idct_intermediate_sv;
149   struct pipe_surface **idct_surfaces;
150
151   struct vl_mpeg12_decoder *dec;
152
153   unsigned i;
154
155   assert(buffer);
156
157   dec = (struct vl_mpeg12_decoder*)buffer->base.decoder;
158
159   formats[0] = formats[1] = formats[2] = dec->idct_source_format;
160   buffer->idct_source = vl_video_buffer_init(dec->base.context, dec->pipe,
161                                              dec->base.width / 4, dec->base.height, 1,
162                                              dec->base.chroma_format,
163                                              formats, PIPE_USAGE_STATIC);
164   if (!buffer->idct_source)
165      goto error_source;
166
167   formats[0] = formats[1] = formats[2] = dec->idct_intermediate_format;
168   buffer->idct_intermediate = vl_video_buffer_init(dec->base.context, dec->pipe,
169                                                    dec->base.width / dec->nr_of_idct_render_targets,
170                                                    dec->base.height / 4, dec->nr_of_idct_render_targets,
171                                                    dec->base.chroma_format,
172                                                    formats, PIPE_USAGE_STATIC);
173
174   if (!buffer->idct_intermediate)
175      goto error_intermediate;
176
177   idct_source_sv = buffer->idct_source->get_sampler_views(buffer->idct_source);
178   if (!idct_source_sv)
179      goto error_source_sv;
180
181   idct_intermediate_sv = buffer->idct_intermediate->get_sampler_views(buffer->idct_intermediate);
182   if (!idct_intermediate_sv)
183      goto error_intermediate_sv;
184
185   idct_surfaces = buffer->mc_source->get_surfaces(buffer->mc_source);
186   if (!idct_surfaces)
187      goto error_surfaces;
188
189   for (i = 0; i < 3; ++i)
190      if (!vl_idct_init_buffer(i == 0 ? &dec->idct_y : &dec->idct_c,
191                               &buffer->idct[i], idct_source_sv[i],
192                               idct_intermediate_sv[i], idct_surfaces[i]))
193         goto error_plane;
194
195   return true;
196
197error_plane:
198   for (; i > 0; --i)
199      vl_idct_cleanup_buffer(i == 1 ? &dec->idct_c : &dec->idct_y, &buffer->idct[i - 1]);
200
201error_surfaces:
202error_intermediate_sv:
203error_source_sv:
204   buffer->idct_intermediate->destroy(buffer->idct_intermediate);
205
206error_intermediate:
207   buffer->idct_source->destroy(buffer->idct_source);
208
209error_source:
210   return false;
211}
212
213static void
214cleanup_idct_buffer(struct vl_mpeg12_buffer *buf)
215{
216   struct vl_mpeg12_decoder *dec;
217   assert(buf);
218
219   dec = (struct vl_mpeg12_decoder*)buf->base.decoder;
220   assert(dec);
221
222   vl_idct_cleanup_buffer(&dec->idct_y, &buf->idct[0]);
223   vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[1]);
224   vl_idct_cleanup_buffer(&dec->idct_c, &buf->idct[2]);
225   buf->idct_source->destroy(buf->idct_source);
226   buf->idct_intermediate->destroy(buf->idct_intermediate);
227}
228
229static void
230vl_mpeg12_buffer_destroy(struct pipe_video_decode_buffer *buffer)
231{
232   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
233   struct vl_mpeg12_decoder *dec;
234   unsigned i;
235
236   assert(buf);
237
238   dec = (struct vl_mpeg12_decoder*)buf->base.decoder;
239   assert(dec);
240
241   cleanup_zscan_buffer(buf);
242
243   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
244      cleanup_idct_buffer(buf);
245
246   buf->mc_source->destroy(buf->mc_source);
247   vl_vb_cleanup(&buf->vertex_stream);
248   for (i = 0; i < VL_MAX_PLANES; ++i)
249      vl_mc_cleanup_buffer(&buf->mc[i]);
250
251   FREE(buf);
252}
253
254static void
255vl_mpeg12_buffer_map(struct pipe_video_decode_buffer *buffer)
256{
257   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
258   struct vl_mpeg12_decoder *dec;
259
260   struct pipe_sampler_view **sampler_views;
261   unsigned i;
262
263   assert(buf);
264
265   dec = (struct vl_mpeg12_decoder *)buf->base.decoder;
266   assert(dec);
267
268   vl_vb_map(&buf->vertex_stream, dec->pipe);
269
270   sampler_views = buf->zscan_source->get_sampler_views(buf->zscan_source);
271
272   assert(sampler_views);
273
274   for (i = 0; i < VL_MAX_PLANES; ++i) {
275      struct pipe_resource *tex = sampler_views[i]->texture;
276      struct pipe_box rect =
277      {
278         0, 0, 0,
279         tex->width0,
280         tex->height0,
281         1
282      };
283
284      buf->tex_transfer[i] = dec->pipe->get_transfer
285      (
286         dec->pipe, tex,
287         0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD,
288         &rect
289      );
290
291      buf->texels[i] = dec->pipe->transfer_map(dec->pipe, buf->tex_transfer[i]);
292   }
293}
294
295static struct pipe_ycbcr_block *
296vl_mpeg12_buffer_get_ycbcr_stream(struct pipe_video_decode_buffer *buffer, int component)
297{
298   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
299
300   assert(buf);
301
302   return vl_vb_get_ycbcr_stream(&buf->vertex_stream, component);
303}
304
305static short *
306vl_mpeg12_buffer_get_ycbcr_buffer(struct pipe_video_decode_buffer *buffer, int component)
307{
308   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
309
310   assert(buf);
311   assert(component < VL_MAX_PLANES);
312
313   return buf->texels[component];
314}
315
316static unsigned
317vl_mpeg12_buffer_get_mv_stream_stride(struct pipe_video_decode_buffer *buffer)
318{
319   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
320
321   assert(buf);
322
323   return vl_vb_get_mv_stream_stride(&buf->vertex_stream);
324}
325
326static struct pipe_motionvector *
327vl_mpeg12_buffer_get_mv_stream(struct pipe_video_decode_buffer *buffer, int ref_frame)
328{
329   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
330
331   assert(buf);
332
333   return vl_vb_get_mv_stream(&buf->vertex_stream, ref_frame);
334}
335
336static void
337vl_mpeg12_buffer_unmap(struct pipe_video_decode_buffer *buffer)
338{
339   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer*)buffer;
340   struct vl_mpeg12_decoder *dec;
341   unsigned i;
342
343   assert(buf);
344
345   dec = (struct vl_mpeg12_decoder *)buf->base.decoder;
346   assert(dec);
347
348   vl_vb_unmap(&buf->vertex_stream, dec->pipe);
349
350   for (i = 0; i < VL_MAX_PLANES; ++i) {
351      dec->pipe->transfer_unmap(dec->pipe, buf->tex_transfer[i]);
352      dec->pipe->transfer_destroy(dec->pipe, buf->tex_transfer[i]);
353   }
354}
355
356static void
357vl_mpeg12_destroy(struct pipe_video_decoder *decoder)
358{
359   struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
360
361   assert(decoder);
362
363   /* Asserted in softpipe_delete_fs_state() for some reason */
364   dec->pipe->bind_vs_state(dec->pipe, NULL);
365   dec->pipe->bind_fs_state(dec->pipe, NULL);
366
367   dec->pipe->delete_depth_stencil_alpha_state(dec->pipe, dec->dsa);
368
369   vl_mc_cleanup(&dec->mc_y);
370   vl_mc_cleanup(&dec->mc_c);
371
372   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
373      vl_idct_cleanup(&dec->idct_y);
374      vl_idct_cleanup(&dec->idct_c);
375   }
376
377   vl_zscan_cleanup(&dec->zscan_y);
378   vl_zscan_cleanup(&dec->zscan_c);
379
380   dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves_ycbcr);
381   dec->pipe->delete_vertex_elements_state(dec->pipe, dec->ves_mv);
382
383   pipe_resource_reference(&dec->quads.buffer, NULL);
384   pipe_resource_reference(&dec->pos.buffer, NULL);
385
386   FREE(dec);
387}
388
389static struct pipe_video_decode_buffer *
390vl_mpeg12_create_buffer(struct pipe_video_decoder *decoder)
391{
392   enum pipe_format formats[3];
393
394   struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
395   struct vl_mpeg12_buffer *buffer;
396
397   struct pipe_sampler_view **mc_source_sv;
398
399   assert(dec);
400
401   buffer = CALLOC_STRUCT(vl_mpeg12_buffer);
402   if (buffer == NULL)
403      return NULL;
404
405   buffer->base.decoder = decoder;
406   buffer->base.destroy = vl_mpeg12_buffer_destroy;
407   buffer->base.map = vl_mpeg12_buffer_map;
408   buffer->base.get_ycbcr_stream = vl_mpeg12_buffer_get_ycbcr_stream;
409   buffer->base.get_ycbcr_buffer = vl_mpeg12_buffer_get_ycbcr_buffer;
410   buffer->base.get_mv_stream_stride = vl_mpeg12_buffer_get_mv_stream_stride;
411   buffer->base.get_mv_stream = vl_mpeg12_buffer_get_mv_stream;
412   buffer->base.unmap = vl_mpeg12_buffer_unmap;
413
414   vl_vb_init(&buffer->vertex_stream, dec->pipe,
415              dec->base.width / MACROBLOCK_WIDTH,
416              dec->base.height / MACROBLOCK_HEIGHT);
417
418   formats[0] = formats[1] = formats[2] =dec->mc_source_format;
419   buffer->mc_source = vl_video_buffer_init(dec->base.context, dec->pipe,
420                                            dec->base.width, dec->base.height, 1,
421                                            dec->base.chroma_format,
422                                            formats, PIPE_USAGE_STATIC);
423
424   if (!buffer->mc_source)
425      goto error_mc_source;
426
427   mc_source_sv = buffer->mc_source->get_sampler_views(buffer->mc_source);
428   if (!mc_source_sv)
429      goto error_mc_source_sv;
430
431   if(!vl_mc_init_buffer(&dec->mc_y, &buffer->mc[0], mc_source_sv[0]))
432      goto error_mc_y;
433
434   if(!vl_mc_init_buffer(&dec->mc_c, &buffer->mc[1], mc_source_sv[1]))
435      goto error_mc_cb;
436
437   if(!vl_mc_init_buffer(&dec->mc_c, &buffer->mc[2], mc_source_sv[2]))
438      goto error_mc_cr;
439
440   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
441      if (!init_idct_buffer(buffer))
442         goto error_idct;
443
444   if (!init_zscan_buffer(buffer))
445      goto error_zscan;
446
447   return &buffer->base;
448
449error_zscan:
450   // TODO Cleanup error handling
451
452error_mc_cr:
453   vl_mc_cleanup_buffer(&buffer->mc[1]);
454
455error_mc_cb:
456   vl_mc_cleanup_buffer(&buffer->mc[0]);
457
458error_mc_y:
459error_mc_source_sv:
460   if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
461      cleanup_idct_buffer(buffer);
462
463error_idct:
464   buffer->mc_source->destroy(buffer->mc_source);
465
466error_mc_source:
467   vl_vb_cleanup(&buffer->vertex_stream);
468
469error_vertex_stream:
470   FREE(buffer);
471   return NULL;
472}
473
474static void
475vl_mpeg12_decoder_flush_buffer(struct pipe_video_decode_buffer *buffer,
476                               unsigned num_ycbcr_blocks[3],
477                               struct pipe_video_buffer *refs[2],
478                               struct pipe_video_buffer *dst,
479                               struct pipe_fence_handle **fence)
480{
481   struct vl_mpeg12_buffer *buf = (struct vl_mpeg12_buffer *)buffer;
482   struct vl_mpeg12_decoder *dec;
483
484   struct pipe_sampler_view **sv[2];
485   struct pipe_surface **surfaces;
486
487   struct pipe_vertex_buffer vb[3];
488
489   unsigned i, j;
490
491   assert(buf);
492
493   dec = (struct vl_mpeg12_decoder *)buf->base.decoder;
494   assert(dec);
495
496   for (i = 0; i < 2; ++i)
497      sv[i] = refs[i] ? refs[i]->get_sampler_views(refs[i]) : NULL;
498
499   surfaces = dst->get_surfaces(dst);
500
501   vb[0] = dec->quads;
502   vb[1] = dec->pos;
503
504   dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves_mv);
505   for (i = 0; i < VL_MAX_PLANES; ++i) {
506      vl_mc_set_surface(&buf->mc[i], surfaces[i]);
507
508      for (j = 0; j < 2; ++j) {
509         if (sv[j] == NULL) continue;
510
511         vb[2] = vl_vb_get_mv(&buf->vertex_stream, j);;
512         dec->pipe->set_vertex_buffers(dec->pipe, 3, vb);
513
514         vl_mc_render_ref(&buf->mc[i], sv[j][i]);
515      }
516   }
517
518   dec->pipe->bind_vertex_elements_state(dec->pipe, dec->ves_ycbcr);
519   for (i = 0; i < VL_MAX_PLANES; ++i) {
520      if (num_ycbcr_blocks[i] == 0) continue;
521
522      vb[1] = vl_vb_get_ycbcr(&buf->vertex_stream, i);
523      dec->pipe->set_vertex_buffers(dec->pipe, 2, vb);
524
525      vl_zscan_render(&buf->zscan[i] , num_ycbcr_blocks[i]);
526
527      if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
528         vl_idct_flush(i == 0 ? &dec->idct_y : &dec->idct_c, &buf->idct[i], num_ycbcr_blocks[i]);
529
530      vl_mc_render_ycbcr(&buf->mc[i], num_ycbcr_blocks[i]);
531   }
532
533   dec->pipe->flush(dec->pipe, fence);
534}
535
536static bool
537init_pipe_state(struct vl_mpeg12_decoder *dec)
538{
539   struct pipe_depth_stencil_alpha_state dsa;
540   unsigned i;
541
542   assert(dec);
543
544   memset(&dsa, 0, sizeof dsa);
545   dsa.depth.enabled = 0;
546   dsa.depth.writemask = 0;
547   dsa.depth.func = PIPE_FUNC_ALWAYS;
548   for (i = 0; i < 2; ++i) {
549      dsa.stencil[i].enabled = 0;
550      dsa.stencil[i].func = PIPE_FUNC_ALWAYS;
551      dsa.stencil[i].fail_op = PIPE_STENCIL_OP_KEEP;
552      dsa.stencil[i].zpass_op = PIPE_STENCIL_OP_KEEP;
553      dsa.stencil[i].zfail_op = PIPE_STENCIL_OP_KEEP;
554      dsa.stencil[i].valuemask = 0;
555      dsa.stencil[i].writemask = 0;
556   }
557   dsa.alpha.enabled = 0;
558   dsa.alpha.func = PIPE_FUNC_ALWAYS;
559   dsa.alpha.ref_value = 0;
560   dec->dsa = dec->pipe->create_depth_stencil_alpha_state(dec->pipe, &dsa);
561   dec->pipe->bind_depth_stencil_alpha_state(dec->pipe, dec->dsa);
562
563   return true;
564}
565
566static enum pipe_format
567find_first_supported_format(struct vl_mpeg12_decoder *dec,
568                            const enum pipe_format formats[],
569                            unsigned num_formats,
570                            enum pipe_texture_target target)
571{
572   struct pipe_screen *screen;
573   unsigned i;
574
575   assert(dec);
576
577   screen = dec->pipe->screen;
578
579   for (i = 0; i < num_formats; ++i)
580      if (screen->is_format_supported(dec->pipe->screen, formats[i], target, 1,
581                                      PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET))
582         return formats[i];
583
584   return PIPE_FORMAT_NONE;
585}
586
587static bool
588init_zscan(struct vl_mpeg12_decoder *dec)
589{
590   struct pipe_sampler_view *layout;
591
592   unsigned num_channels;
593
594   assert(dec);
595
596   dec->blocks_per_line = 4;
597   dec->max_blocks =
598      (dec->base.width * dec->base.height) /
599      (BLOCK_WIDTH * BLOCK_HEIGHT);
600
601   dec->zscan_source_format = find_first_supported_format(dec, const_zscan_source_formats,
602                                                          num_zscan_source_formats, PIPE_TEXTURE_2D);
603
604   if (dec->zscan_source_format == PIPE_FORMAT_NONE)
605      return false;
606
607   layout = vl_zscan_linear(dec->pipe, dec->blocks_per_line);
608
609   num_channels = dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT ? 4 : 1;
610
611   if (!vl_zscan_init(&dec->zscan_y, dec->pipe, dec->base.width, dec->base.height,
612                      dec->blocks_per_line, dec->max_blocks, num_channels))
613      return false;
614
615   vl_zscan_set_layout(&dec->zscan_y, layout);
616
617   if (!vl_zscan_init(&dec->zscan_c, dec->pipe, dec->chroma_width, dec->chroma_height,
618                      dec->blocks_per_line, dec->max_blocks, num_channels))
619      return false;
620
621   vl_zscan_set_layout(&dec->zscan_c, layout);
622
623   return true;
624}
625
626static bool
627init_idct(struct vl_mpeg12_decoder *dec)
628{
629   struct pipe_sampler_view *matrix, *transpose;
630   float matrix_scale, transpose_scale;
631
632   dec->nr_of_idct_render_targets = dec->pipe->screen->get_param(dec->pipe->screen, PIPE_CAP_MAX_RENDER_TARGETS);
633
634   // more than 4 render targets usually doesn't makes any seens
635   dec->nr_of_idct_render_targets = MIN2(dec->nr_of_idct_render_targets, 4);
636
637   dec->idct_source_format = find_first_supported_format(dec, const_idct_source_formats,
638                                                         num_idct_source_formats, PIPE_TEXTURE_2D);
639
640   if (dec->idct_source_format == PIPE_FORMAT_NONE)
641      return false;
642
643   dec->idct_intermediate_format = find_first_supported_format(dec, const_idct_intermediate_formats,
644                                                               num_idct_intermediate_formats, PIPE_TEXTURE_3D);
645
646   if (dec->idct_intermediate_format == PIPE_FORMAT_NONE)
647      return false;
648
649   switch (dec->idct_source_format) {
650   case PIPE_FORMAT_R16G16B16A16_SSCALED:
651      matrix_scale = SCALE_FACTOR_SSCALED;
652      break;
653
654   case PIPE_FORMAT_R16G16B16A16_SNORM:
655      matrix_scale = SCALE_FACTOR_SNORM;
656      break;
657
658   default:
659      assert(0);
660      return false;
661   }
662
663   if (dec->idct_intermediate_format == PIPE_FORMAT_R16G16B16A16_FLOAT ||
664       dec->idct_intermediate_format == PIPE_FORMAT_R32G32B32A32_FLOAT)
665      transpose_scale = 1.0f;
666   else
667      transpose_scale = matrix_scale = sqrt(matrix_scale);
668
669   if (dec->mc_source_format == PIPE_FORMAT_R16_SSCALED)
670      transpose_scale /= SCALE_FACTOR_SSCALED;
671
672   if (!(matrix = vl_idct_upload_matrix(dec->pipe, matrix_scale)))
673      goto error_matrix;
674
675   if (matrix_scale != transpose_scale) {
676      if (!(transpose = vl_idct_upload_matrix(dec->pipe, transpose_scale)))
677         goto error_transpose;
678   } else
679      pipe_sampler_view_reference(&transpose, matrix);
680
681   if (!vl_idct_init(&dec->idct_y, dec->pipe, dec->base.width, dec->base.height,
682                     dec->nr_of_idct_render_targets, matrix, transpose))
683      goto error_y;
684
685   if(!vl_idct_init(&dec->idct_c, dec->pipe, dec->chroma_width, dec->chroma_height,
686                    dec->nr_of_idct_render_targets, matrix, transpose))
687      goto error_c;
688
689   pipe_sampler_view_reference(&matrix, NULL);
690   pipe_sampler_view_reference(&transpose, NULL);
691   return true;
692
693error_c:
694   vl_idct_cleanup(&dec->idct_y);
695
696error_y:
697   pipe_sampler_view_reference(&transpose, NULL);
698
699error_transpose:
700   pipe_sampler_view_reference(&matrix, NULL);
701
702error_matrix:
703   return false;
704}
705
706struct pipe_video_decoder *
707vl_create_mpeg12_decoder(struct pipe_video_context *context,
708                         struct pipe_context *pipe,
709                         enum pipe_video_profile profile,
710                         enum pipe_video_entrypoint entrypoint,
711                         enum pipe_video_chroma_format chroma_format,
712                         unsigned width, unsigned height)
713{
714   struct vl_mpeg12_decoder *dec;
715   float mc_scale;
716
717   assert(u_reduce_video_profile(profile) == PIPE_VIDEO_CODEC_MPEG12);
718
719   dec = CALLOC_STRUCT(vl_mpeg12_decoder);
720
721   if (!dec)
722      return NULL;
723
724   dec->base.context = context;
725   dec->base.profile = profile;
726   dec->base.entrypoint = entrypoint;
727   dec->base.chroma_format = chroma_format;
728   dec->base.width = width;
729   dec->base.height = height;
730
731   dec->base.destroy = vl_mpeg12_destroy;
732   dec->base.create_buffer = vl_mpeg12_create_buffer;
733   dec->base.flush_buffer = vl_mpeg12_decoder_flush_buffer;
734
735   dec->base.width = align(width, MACROBLOCK_WIDTH);
736   dec->base.height = align(height, MACROBLOCK_HEIGHT);
737
738   dec->pipe = pipe;
739
740   dec->quads = vl_vb_upload_quads(dec->pipe);
741   dec->pos = vl_vb_upload_pos(
742      dec->pipe,
743      dec->base.width / MACROBLOCK_WIDTH,
744      dec->base.height / MACROBLOCK_HEIGHT
745   );
746
747   dec->ves_ycbcr = vl_vb_get_ves_ycbcr(dec->pipe);
748   dec->ves_mv = vl_vb_get_ves_mv(dec->pipe);
749
750   /* TODO: Implement 422, 444 */
751   assert(dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
752
753   dec->mc_source_format = find_first_supported_format(dec, const_mc_source_formats,
754                                                       num_mc_source_formats, PIPE_TEXTURE_3D);
755
756   if (dec->mc_source_format == PIPE_FORMAT_NONE)
757      return NULL;
758
759   if (dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
760      dec->chroma_width = dec->base.width / 2;
761      dec->chroma_height = dec->base.height / 2;
762   } else if (dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
763      dec->chroma_width = dec->base.width;
764      dec->chroma_height = dec->base.height / 2;
765   } else {
766      dec->chroma_width = dec->base.width;
767      dec->chroma_height = dec->base.height;
768   }
769
770   if (!init_zscan(dec))
771      return NULL; // TODO error handling
772
773   if (entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
774      if (!init_idct(dec))
775         goto error_idct;
776      if (dec->mc_source_format == PIPE_FORMAT_R16_SSCALED)
777         mc_scale = SCALE_FACTOR_SSCALED;
778      else
779         mc_scale = 1.0f;
780   } else {
781      switch (dec->mc_source_format) {
782      case PIPE_FORMAT_R16_SNORM:
783         mc_scale = SCALE_FACTOR_SNORM;
784         break;
785
786      case PIPE_FORMAT_R16_SSCALED:
787         mc_scale = SCALE_FACTOR_SSCALED;
788         break;
789
790      default:
791         assert(0);
792         return NULL;
793      }
794   }
795
796   if (!vl_mc_init(&dec->mc_y, dec->pipe, dec->base.width, dec->base.height, MACROBLOCK_HEIGHT, mc_scale))
797      goto error_mc_y;
798
799   // TODO
800   if (!vl_mc_init(&dec->mc_c, dec->pipe, dec->base.width, dec->base.height, BLOCK_HEIGHT, mc_scale))
801      goto error_mc_c;
802
803   if (!init_pipe_state(dec))
804      goto error_pipe_state;
805
806   return &dec->base;
807
808error_pipe_state:
809   vl_mc_cleanup(&dec->mc_c);
810
811error_mc_c:
812   vl_mc_cleanup(&dec->mc_y);
813
814error_mc_y:
815   if (entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
816      vl_idct_cleanup(&dec->idct_y);
817      vl_idct_cleanup(&dec->idct_c);
818   }
819
820error_idct:
821   FREE(dec);
822   return NULL;
823}
824