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vaapi_vc1.c
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1 /*
2  * VC-1 HW decode acceleration through VA API
3  *
4  * Copyright (C) 2008-2009 Splitted-Desktop Systems
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "vaapi_internal.h"
24 #include "vc1.h"
25 #include "vc1data.h"
26 
27 /** Translate FFmpeg MV modes to VA API */
28 static int get_VAMvModeVC1(enum MVModes mv_mode)
29 {
30  switch (mv_mode) {
31  case MV_PMODE_1MV_HPEL_BILIN: return VAMvMode1MvHalfPelBilinear;
32  case MV_PMODE_1MV: return VAMvMode1Mv;
33  case MV_PMODE_1MV_HPEL: return VAMvMode1MvHalfPel;
34  case MV_PMODE_MIXED_MV: return VAMvModeMixedMv;
35  case MV_PMODE_INTENSITY_COMP: return VAMvModeIntensityCompensation;
36  }
37  return 0;
38 }
39 
40 /** Check whether the MVTYPEMB bitplane is present */
41 static inline int vc1_has_MVTYPEMB_bitplane(VC1Context *v)
42 {
43  if (v->mv_type_is_raw)
44  return 0;
45  return v->s.pict_type == AV_PICTURE_TYPE_P &&
46  (v->mv_mode == MV_PMODE_MIXED_MV ||
47  (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
48  v->mv_mode2 == MV_PMODE_MIXED_MV));
49 }
50 
51 /** Check whether the SKIPMB bitplane is present */
52 static inline int vc1_has_SKIPMB_bitplane(VC1Context *v)
53 {
54  if (v->skip_is_raw)
55  return 0;
56  return v->s.pict_type == AV_PICTURE_TYPE_P ||
57  (v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type);
58 }
59 
60 /** Check whether the DIRECTMB bitplane is present */
61 static inline int vc1_has_DIRECTMB_bitplane(VC1Context *v)
62 {
63  if (v->dmb_is_raw)
64  return 0;
65  return v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
66 }
67 
68 /** Check whether the ACPRED bitplane is present */
69 static inline int vc1_has_ACPRED_bitplane(VC1Context *v)
70 {
71  if (v->acpred_is_raw)
72  return 0;
73  return v->profile == PROFILE_ADVANCED &&
74  (v->s.pict_type == AV_PICTURE_TYPE_I ||
75  (v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type));
76 }
77 
78 /** Check whether the OVERFLAGS bitplane is present */
79 static inline int vc1_has_OVERFLAGS_bitplane(VC1Context *v)
80 {
81  if (v->overflg_is_raw)
82  return 0;
83  return v->profile == PROFILE_ADVANCED &&
84  (v->s.pict_type == AV_PICTURE_TYPE_I ||
85  (v->s.pict_type == AV_PICTURE_TYPE_B && v->bi_type)) &&
86  (v->overlap && v->pq <= 8) &&
87  v->condover == CONDOVER_SELECT;
88 }
89 
90 /** Reconstruct bitstream PTYPE (7.1.1.4, index into Table-35) */
91 static int vc1_get_PTYPE(VC1Context *v)
92 {
93  MpegEncContext * const s = &v->s;
94  switch (s->pict_type) {
95  case AV_PICTURE_TYPE_I: return 0;
96  case AV_PICTURE_TYPE_P: return v->p_frame_skipped ? 4 : 1;
97  case AV_PICTURE_TYPE_B: return v->bi_type ? 3 : 2;
98  }
99  return 0;
100 }
101 
102 /** Reconstruct bitstream MVMODE (7.1.1.32) */
103 static inline VAMvModeVC1 vc1_get_MVMODE(VC1Context *v)
104 {
105  if (v->s.pict_type == AV_PICTURE_TYPE_P ||
106  (v->s.pict_type == AV_PICTURE_TYPE_B && !v->bi_type))
107  return get_VAMvModeVC1(v->mv_mode);
108  return 0;
109 }
110 
111 /** Reconstruct bitstream MVMODE2 (7.1.1.33) */
112 static inline VAMvModeVC1 vc1_get_MVMODE2(VC1Context *v)
113 {
114  if (v->s.pict_type == AV_PICTURE_TYPE_P && v->mv_mode == MV_PMODE_INTENSITY_COMP)
115  return get_VAMvModeVC1(v->mv_mode2);
116  return 0;
117 }
118 
119 /** Reconstruct bitstream TTFRM (7.1.1.41, Table-53) */
120 static inline int vc1_get_TTFRM(VC1Context *v)
121 {
122  switch (v->ttfrm) {
123  case TT_8X8: return 0;
124  case TT_8X4: return 1;
125  case TT_4X8: return 2;
126  case TT_4X4: return 3;
127  }
128  return 0;
129 }
130 
131 /** Pack FFmpeg bitplanes into a VABitPlaneBuffer element */
132 static inline void vc1_pack_bitplanes(uint8_t *bitplane, int n, const uint8_t *ff_bp[3], int x, int y, int stride)
133 {
134  const int bitplane_index = n / 2;
135  const int ff_bp_index = y * stride + x;
136  uint8_t v = 0;
137  if (ff_bp[0])
138  v = ff_bp[0][ff_bp_index];
139  if (ff_bp[1])
140  v |= ff_bp[1][ff_bp_index] << 1;
141  if (ff_bp[2])
142  v |= ff_bp[2][ff_bp_index] << 2;
143  bitplane[bitplane_index] = (bitplane[bitplane_index] << 4) | v;
144 }
145 
146 static int vaapi_vc1_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
147 {
148  VC1Context * const v = avctx->priv_data;
149  MpegEncContext * const s = &v->s;
150  struct vaapi_context * const vactx = avctx->hwaccel_context;
151  VAPictureParameterBufferVC1 *pic_param;
152 
153  av_dlog(avctx, "vaapi_vc1_start_frame()\n");
154 
155  vactx->slice_param_size = sizeof(VASliceParameterBufferVC1);
156 
157  /* Fill in VAPictureParameterBufferVC1 */
158  pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferVC1));
159  if (!pic_param)
160  return -1;
161  pic_param->forward_reference_picture = VA_INVALID_ID;
162  pic_param->backward_reference_picture = VA_INVALID_ID;
163  pic_param->inloop_decoded_picture = VA_INVALID_ID;
164  pic_param->sequence_fields.value = 0; /* reset all bits */
165  pic_param->sequence_fields.bits.pulldown = v->broadcast;
166  pic_param->sequence_fields.bits.interlace = v->interlace;
167  pic_param->sequence_fields.bits.tfcntrflag = v->tfcntrflag;
168  pic_param->sequence_fields.bits.finterpflag = v->finterpflag;
169  pic_param->sequence_fields.bits.psf = v->psf;
170  pic_param->sequence_fields.bits.multires = v->multires;
171  pic_param->sequence_fields.bits.overlap = v->overlap;
172  pic_param->sequence_fields.bits.syncmarker = v->resync_marker;
173  pic_param->sequence_fields.bits.rangered = v->rangered;
174  pic_param->sequence_fields.bits.max_b_frames = s->avctx->max_b_frames;
175 #if VA_CHECK_VERSION(0,32,0)
176  pic_param->sequence_fields.bits.profile = v->profile;
177 #endif
178  pic_param->coded_width = s->avctx->coded_width;
179  pic_param->coded_height = s->avctx->coded_height;
180  pic_param->entrypoint_fields.value = 0; /* reset all bits */
181  pic_param->entrypoint_fields.bits.broken_link = v->broken_link;
182  pic_param->entrypoint_fields.bits.closed_entry = v->closed_entry;
183  pic_param->entrypoint_fields.bits.panscan_flag = v->panscanflag;
184  pic_param->entrypoint_fields.bits.loopfilter = s->loop_filter;
185  pic_param->conditional_overlap_flag = v->condover;
186  pic_param->fast_uvmc_flag = v->fastuvmc;
187  pic_param->range_mapping_fields.value = 0; /* reset all bits */
188  pic_param->range_mapping_fields.bits.luma_flag = v->range_mapy_flag;
189  pic_param->range_mapping_fields.bits.luma = v->range_mapy;
190  pic_param->range_mapping_fields.bits.chroma_flag = v->range_mapuv_flag;
191  pic_param->range_mapping_fields.bits.chroma = v->range_mapuv;
192  pic_param->b_picture_fraction = v->bfraction_lut_index;
193  pic_param->cbp_table = v->cbpcy_vlc ? v->cbpcy_vlc - ff_vc1_cbpcy_p_vlc : 0;
194  pic_param->mb_mode_table = 0; /* XXX: interlaced frame */
195  pic_param->range_reduction_frame = v->rangeredfrm;
196  pic_param->rounding_control = v->rnd;
197  pic_param->post_processing = v->postproc;
198  pic_param->picture_resolution_index = v->respic;
199  pic_param->luma_scale = v->lumscale;
200  pic_param->luma_shift = v->lumshift;
201  pic_param->picture_fields.value = 0; /* reset all bits */
202  pic_param->picture_fields.bits.picture_type = vc1_get_PTYPE(v);
203  pic_param->picture_fields.bits.frame_coding_mode = v->fcm;
204  pic_param->picture_fields.bits.top_field_first = v->tff;
205  pic_param->picture_fields.bits.is_first_field = v->fcm == 0; /* XXX: interlaced frame */
206  pic_param->picture_fields.bits.intensity_compensation = v->mv_mode == MV_PMODE_INTENSITY_COMP;
207  pic_param->raw_coding.value = 0; /* reset all bits */
208  pic_param->raw_coding.flags.mv_type_mb = v->mv_type_is_raw;
209  pic_param->raw_coding.flags.direct_mb = v->dmb_is_raw;
210  pic_param->raw_coding.flags.skip_mb = v->skip_is_raw;
211  pic_param->raw_coding.flags.field_tx = 0; /* XXX: interlaced frame */
212  pic_param->raw_coding.flags.forward_mb = 0; /* XXX: interlaced frame */
213  pic_param->raw_coding.flags.ac_pred = v->acpred_is_raw;
214  pic_param->raw_coding.flags.overflags = v->overflg_is_raw;
215  pic_param->bitplane_present.value = 0; /* reset all bits */
216  pic_param->bitplane_present.flags.bp_mv_type_mb = vc1_has_MVTYPEMB_bitplane(v);
217  pic_param->bitplane_present.flags.bp_direct_mb = vc1_has_DIRECTMB_bitplane(v);
218  pic_param->bitplane_present.flags.bp_skip_mb = vc1_has_SKIPMB_bitplane(v);
219  pic_param->bitplane_present.flags.bp_field_tx = 0; /* XXX: interlaced frame */
220  pic_param->bitplane_present.flags.bp_forward_mb = 0; /* XXX: interlaced frame */
221  pic_param->bitplane_present.flags.bp_ac_pred = vc1_has_ACPRED_bitplane(v);
222  pic_param->bitplane_present.flags.bp_overflags = vc1_has_OVERFLAGS_bitplane(v);
223  pic_param->reference_fields.value = 0; /* reset all bits */
224  pic_param->reference_fields.bits.reference_distance_flag = v->refdist_flag;
225  pic_param->reference_fields.bits.reference_distance = 0; /* XXX: interlaced frame */
226  pic_param->reference_fields.bits.num_reference_pictures = 0; /* XXX: interlaced frame */
227  pic_param->reference_fields.bits.reference_field_pic_indicator = 0; /* XXX: interlaced frame */
228  pic_param->mv_fields.value = 0; /* reset all bits */
229  pic_param->mv_fields.bits.mv_mode = vc1_get_MVMODE(v);
230  pic_param->mv_fields.bits.mv_mode2 = vc1_get_MVMODE2(v);
231  pic_param->mv_fields.bits.mv_table = s->mv_table_index;
232  pic_param->mv_fields.bits.two_mv_block_pattern_table = 0; /* XXX: interlaced frame */
233  pic_param->mv_fields.bits.four_mv_switch = 0; /* XXX: interlaced frame */
234  pic_param->mv_fields.bits.four_mv_block_pattern_table = 0; /* XXX: interlaced frame */
235  pic_param->mv_fields.bits.extended_mv_flag = v->extended_mv;
236  pic_param->mv_fields.bits.extended_mv_range = v->mvrange;
237  pic_param->mv_fields.bits.extended_dmv_flag = v->extended_dmv;
238  pic_param->mv_fields.bits.extended_dmv_range = 0; /* XXX: interlaced frame */
239  pic_param->pic_quantizer_fields.value = 0; /* reset all bits */
240  pic_param->pic_quantizer_fields.bits.dquant = v->dquant;
241  pic_param->pic_quantizer_fields.bits.quantizer = v->quantizer_mode;
242  pic_param->pic_quantizer_fields.bits.half_qp = v->halfpq;
243  pic_param->pic_quantizer_fields.bits.pic_quantizer_scale = v->pq;
244  pic_param->pic_quantizer_fields.bits.pic_quantizer_type = v->pquantizer;
245  pic_param->pic_quantizer_fields.bits.dq_frame = v->dquantfrm;
246  pic_param->pic_quantizer_fields.bits.dq_profile = v->dqprofile;
247  pic_param->pic_quantizer_fields.bits.dq_sb_edge = v->dqprofile == DQPROFILE_SINGLE_EDGE ? v->dqsbedge : 0;
248  pic_param->pic_quantizer_fields.bits.dq_db_edge = v->dqprofile == DQPROFILE_DOUBLE_EDGES ? v->dqsbedge : 0;
249  pic_param->pic_quantizer_fields.bits.dq_binary_level = v->dqbilevel;
250  pic_param->pic_quantizer_fields.bits.alt_pic_quantizer = v->altpq;
251  pic_param->transform_fields.value = 0; /* reset all bits */
252  pic_param->transform_fields.bits.variable_sized_transform_flag = v->vstransform;
253  pic_param->transform_fields.bits.mb_level_transform_type_flag = v->ttmbf;
254  pic_param->transform_fields.bits.frame_level_transform_type = vc1_get_TTFRM(v);
255  pic_param->transform_fields.bits.transform_ac_codingset_idx1 = v->c_ac_table_index;
256  pic_param->transform_fields.bits.transform_ac_codingset_idx2 = v->y_ac_table_index;
257  pic_param->transform_fields.bits.intra_transform_dc_table = v->s.dc_table_index;
258 
259  switch (s->pict_type) {
260  case AV_PICTURE_TYPE_B:
261  pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
262  // fall-through
263  case AV_PICTURE_TYPE_P:
264  pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
265  break;
266  }
267 
268  if (pic_param->bitplane_present.value) {
269  uint8_t *bitplane;
270  const uint8_t *ff_bp[3];
271  int x, y, n;
272 
273  switch (s->pict_type) {
274  case AV_PICTURE_TYPE_P:
275  ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
276  ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb ? s->mbskip_table : NULL;
277  ff_bp[2] = pic_param->bitplane_present.flags.bp_mv_type_mb ? v->mv_type_mb_plane : NULL;
278  break;
279  case AV_PICTURE_TYPE_B:
280  if (!v->bi_type) {
281  ff_bp[0] = pic_param->bitplane_present.flags.bp_direct_mb ? v->direct_mb_plane : NULL;
282  ff_bp[1] = pic_param->bitplane_present.flags.bp_skip_mb ? s->mbskip_table : NULL;
283  ff_bp[2] = NULL; /* XXX: interlaced frame (FORWARD plane) */
284  break;
285  }
286  /* fall-through (BI-type) */
287  case AV_PICTURE_TYPE_I:
288  ff_bp[0] = NULL; /* XXX: interlaced frame (FIELDTX plane) */
289  ff_bp[1] = pic_param->bitplane_present.flags.bp_ac_pred ? v->acpred_plane : NULL;
290  ff_bp[2] = pic_param->bitplane_present.flags.bp_overflags ? v->over_flags_plane : NULL;
291  break;
292  default:
293  ff_bp[0] = NULL;
294  ff_bp[1] = NULL;
295  ff_bp[2] = NULL;
296  break;
297  }
298 
299  bitplane = ff_vaapi_alloc_bitplane(vactx, (s->mb_width * s->mb_height + 1) / 2);
300  if (!bitplane)
301  return -1;
302 
303  n = 0;
304  for (y = 0; y < s->mb_height; y++)
305  for (x = 0; x < s->mb_width; x++, n++)
306  vc1_pack_bitplanes(bitplane, n, ff_bp, x, y, s->mb_stride);
307  if (n & 1) /* move last nibble to the high order */
308  bitplane[n/2] <<= 4;
309  }
310  return 0;
311 }
312 
313 static int vaapi_vc1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
314 {
315  VC1Context * const v = avctx->priv_data;
316  MpegEncContext * const s = &v->s;
317  VASliceParameterBufferVC1 *slice_param;
318 
319  av_dlog(avctx, "vaapi_vc1_decode_slice(): buffer %p, size %d\n", buffer, size);
320 
321  /* Current bit buffer is beyond any marker for VC-1, so skip it */
322  if (avctx->codec_id == AV_CODEC_ID_VC1 && IS_MARKER(AV_RB32(buffer))) {
323  buffer += 4;
324  size -= 4;
325  }
326 
327  /* Fill in VASliceParameterBufferVC1 */
328  slice_param = (VASliceParameterBufferVC1 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size);
329  if (!slice_param)
330  return -1;
331  slice_param->macroblock_offset = get_bits_count(&s->gb);
332  slice_param->slice_vertical_position = s->mb_y;
333  return 0;
334 }
335 
336 #if CONFIG_WMV3_VAAPI_HWACCEL
337 AVHWAccel ff_wmv3_vaapi_hwaccel = {
338  .name = "wmv3_vaapi",
339  .type = AVMEDIA_TYPE_VIDEO,
340  .id = AV_CODEC_ID_WMV3,
341  .pix_fmt = AV_PIX_FMT_VAAPI_VLD,
342  .start_frame = vaapi_vc1_start_frame,
343  .end_frame = ff_vaapi_mpeg_end_frame,
344  .decode_slice = vaapi_vc1_decode_slice,
345 };
346 #endif
347 
348 AVHWAccel ff_vc1_vaapi_hwaccel = {
349  .name = "vc1_vaapi",
350  .type = AVMEDIA_TYPE_VIDEO,
351  .id = AV_CODEC_ID_VC1,
352  .pix_fmt = AV_PIX_FMT_VAAPI_VLD,
353  .start_frame = vaapi_vc1_start_frame,
354  .end_frame = ff_vaapi_mpeg_end_frame,
355  .decode_slice = vaapi_vc1_decode_slice,
356 };
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