Libav
h264_mb_template.c
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #undef FUNC
23 #undef PIXEL_SHIFT
24 
25 #if SIMPLE
26 # define FUNC(n) AV_JOIN(n ## _simple_, BITS)
27 # define PIXEL_SHIFT (BITS >> 4)
28 #else
29 # define FUNC(n) n ## _complex
30 # define PIXEL_SHIFT h->pixel_shift
31 #endif
32 
33 #undef CHROMA_IDC
34 #define CHROMA_IDC 1
35 #include "h264_mc_template.c"
36 
37 #undef CHROMA_IDC
38 #define CHROMA_IDC 2
39 #include "h264_mc_template.c"
40 
42 {
43  const int mb_x = h->mb_x;
44  const int mb_y = h->mb_y;
45  const int mb_xy = h->mb_xy;
46  const int mb_type = h->cur_pic.mb_type[mb_xy];
47  uint8_t *dest_y, *dest_cb, *dest_cr;
48  int linesize, uvlinesize /*dct_offset*/;
49  int i, j;
50  int *block_offset = &h->block_offset[0];
51  const int transform_bypass = !SIMPLE && (h->qscale == 0 && h->sps.transform_bypass);
52  /* is_h264 should always be true if SVQ3 is disabled. */
53  const int is_h264 = !CONFIG_SVQ3_DECODER || SIMPLE || h->avctx->codec_id == AV_CODEC_ID_H264;
54  void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
55  const int block_h = 16 >> h->chroma_y_shift;
56  const int chroma422 = CHROMA422(h);
57 
58  dest_y = h->cur_pic.f.data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * h->linesize) * 16;
59  dest_cb = h->cur_pic.f.data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * h->uvlinesize * block_h;
60  dest_cr = h->cur_pic.f.data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * h->uvlinesize * block_h;
61 
62  h->vdsp.prefetch(dest_y + (h->mb_x & 3) * 4 * h->linesize + (64 << PIXEL_SHIFT), h->linesize, 4);
63  h->vdsp.prefetch(dest_cb + (h->mb_x & 7) * h->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
64 
65  h->list_counts[mb_xy] = h->list_count;
66 
67  if (!SIMPLE && MB_FIELD(h)) {
68  linesize = h->mb_linesize = h->linesize * 2;
69  uvlinesize = h->mb_uvlinesize = h->uvlinesize * 2;
70  block_offset = &h->block_offset[48];
71  if (mb_y & 1) { // FIXME move out of this function?
72  dest_y -= h->linesize * 15;
73  dest_cb -= h->uvlinesize * (block_h - 1);
74  dest_cr -= h->uvlinesize * (block_h - 1);
75  }
76  if (FRAME_MBAFF(h)) {
77  int list;
78  for (list = 0; list < h->list_count; list++) {
79  if (!USES_LIST(mb_type, list))
80  continue;
81  if (IS_16X16(mb_type)) {
82  int8_t *ref = &h->ref_cache[list][scan8[0]];
83  fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (h->mb_y & 1), 1);
84  } else {
85  for (i = 0; i < 16; i += 4) {
86  int ref = h->ref_cache[list][scan8[i]];
87  if (ref >= 0)
88  fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,
89  8, (16 + ref) ^ (h->mb_y & 1), 1);
90  }
91  }
92  }
93  }
94  } else {
95  linesize = h->mb_linesize = h->linesize;
96  uvlinesize = h->mb_uvlinesize = h->uvlinesize;
97  // dct_offset = s->linesize * 16;
98  }
99 
100  if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
101  if (PIXEL_SHIFT) {
102  const int bit_depth = h->sps.bit_depth_luma;
103  int j;
105  init_get_bits(&gb, h->intra_pcm_ptr,
106  ff_h264_mb_sizes[h->sps.chroma_format_idc] * bit_depth);
107 
108  for (i = 0; i < 16; i++) {
109  uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);
110  for (j = 0; j < 16; j++)
111  tmp_y[j] = get_bits(&gb, bit_depth);
112  }
113  if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
114  if (!h->sps.chroma_format_idc) {
115  for (i = 0; i < block_h; i++) {
116  uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
117  for (j = 0; j < 8; j++)
118  tmp_cb[j] = 1 << (bit_depth - 1);
119  }
120  for (i = 0; i < block_h; i++) {
121  uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
122  for (j = 0; j < 8; j++)
123  tmp_cr[j] = 1 << (bit_depth - 1);
124  }
125  } else {
126  for (i = 0; i < block_h; i++) {
127  uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
128  for (j = 0; j < 8; j++)
129  tmp_cb[j] = get_bits(&gb, bit_depth);
130  }
131  for (i = 0; i < block_h; i++) {
132  uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
133  for (j = 0; j < 8; j++)
134  tmp_cr[j] = get_bits(&gb, bit_depth);
135  }
136  }
137  }
138  } else {
139  for (i = 0; i < 16; i++)
140  memcpy(dest_y + i * linesize, h->intra_pcm_ptr + i * 16, 16);
141  if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
142  if (!h->sps.chroma_format_idc) {
143  for (i = 0; i < block_h; i++) {
144  memset(dest_cb + i * uvlinesize, 128, 8);
145  memset(dest_cr + i * uvlinesize, 128, 8);
146  }
147  } else {
148  const uint8_t *src_cb = h->intra_pcm_ptr + 256;
149  const uint8_t *src_cr = h->intra_pcm_ptr + 256 + block_h * 8;
150  for (i = 0; i < block_h; i++) {
151  memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
152  memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
153  }
154  }
155  }
156  }
157  } else {
158  if (IS_INTRA(mb_type)) {
159  if (h->deblocking_filter)
160  xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
161  uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
162 
163  if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
164  h->hpc.pred8x8[h->chroma_pred_mode](dest_cb, uvlinesize);
165  h->hpc.pred8x8[h->chroma_pred_mode](dest_cr, uvlinesize);
166  }
167 
168  hl_decode_mb_predict_luma(h, mb_type, is_h264, SIMPLE,
169  transform_bypass, PIXEL_SHIFT,
170  block_offset, linesize, dest_y, 0);
171 
172  if (h->deblocking_filter)
173  xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
174  uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);
175  } else if (is_h264) {
176  if (chroma422) {
177  FUNC(hl_motion_422)(h, dest_y, dest_cb, dest_cr,
178  h->me.qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
179  h->me.qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
180  h->h264dsp.weight_h264_pixels_tab,
181  h->h264dsp.biweight_h264_pixels_tab);
182  } else {
183  FUNC(hl_motion_420)(h, dest_y, dest_cb, dest_cr,
184  h->me.qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
185  h->me.qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
186  h->h264dsp.weight_h264_pixels_tab,
187  h->h264dsp.biweight_h264_pixels_tab);
188  }
189  }
190 
191  hl_decode_mb_idct_luma(h, mb_type, is_h264, SIMPLE, transform_bypass,
192  PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
193 
194  if ((SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) &&
195  (h->cbp & 0x30)) {
196  uint8_t *dest[2] = { dest_cb, dest_cr };
197  if (transform_bypass) {
198  if (IS_INTRA(mb_type) && h->sps.profile_idc == 244 &&
199  (h->chroma_pred_mode == VERT_PRED8x8 ||
200  h->chroma_pred_mode == HOR_PRED8x8)) {
201  h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0],
202  block_offset + 16,
203  h->mb + (16 * 16 * 1 << PIXEL_SHIFT),
204  uvlinesize);
205  h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1],
206  block_offset + 32,
207  h->mb + (16 * 16 * 2 << PIXEL_SHIFT),
208  uvlinesize);
209  } else {
210  idct_add = h->h264dsp.h264_add_pixels4_clear;
211  for (j = 1; j < 3; j++) {
212  for (i = j * 16; i < j * 16 + 4; i++)
213  if (h->non_zero_count_cache[scan8[i]] ||
214  dctcoef_get(h->mb, PIXEL_SHIFT, i * 16))
215  idct_add(dest[j - 1] + block_offset[i],
216  h->mb + (i * 16 << PIXEL_SHIFT),
217  uvlinesize);
218  if (chroma422) {
219  for (i = j * 16 + 4; i < j * 16 + 8; i++)
220  if (h->non_zero_count_cache[scan8[i + 4]] ||
221  dctcoef_get(h->mb, PIXEL_SHIFT, i * 16))
222  idct_add(dest[j - 1] + block_offset[i + 4],
223  h->mb + (i * 16 << PIXEL_SHIFT),
224  uvlinesize);
225  }
226  }
227  }
228  } else {
229  if (is_h264) {
230  int qp[2];
231  if (chroma422) {
232  qp[0] = h->chroma_qp[0] + 3;
233  qp[1] = h->chroma_qp[1] + 3;
234  } else {
235  qp[0] = h->chroma_qp[0];
236  qp[1] = h->chroma_qp[1];
237  }
238  if (h->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
239  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16 * 16 * 1 << PIXEL_SHIFT),
240  h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
241  if (h->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
242  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16 * 16 * 2 << PIXEL_SHIFT),
243  h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
244  h->h264dsp.h264_idct_add8(dest, block_offset,
245  h->mb, uvlinesize,
246  h->non_zero_count_cache);
247  } else if (CONFIG_SVQ3_DECODER) {
248  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16 * 16 * 1,
249  h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][h->chroma_qp[0]][0]);
250  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16 * 16 * 2,
251  h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][h->chroma_qp[1]][0]);
252  for (j = 1; j < 3; j++) {
253  for (i = j * 16; i < j * 16 + 4; i++)
254  if (h->non_zero_count_cache[scan8[i]] || h->mb[i * 16]) {
255  uint8_t *const ptr = dest[j - 1] + block_offset[i];
256  ff_svq3_add_idct_c(ptr, h->mb + i * 16,
257  uvlinesize,
258  ff_h264_chroma_qp[0][h->qscale + 12] - 12, 2);
259  }
260  }
261  }
262  }
263  }
264  }
265 }
266 
267 #if !SIMPLE || BITS == 8
268 
269 #undef CHROMA_IDC
270 #define CHROMA_IDC 3
271 #include "h264_mc_template.c"
272 
274 {
275  const int mb_x = h->mb_x;
276  const int mb_y = h->mb_y;
277  const int mb_xy = h->mb_xy;
278  const int mb_type = h->cur_pic.mb_type[mb_xy];
279  uint8_t *dest[3];
280  int linesize;
281  int i, j, p;
282  int *block_offset = &h->block_offset[0];
283  const int transform_bypass = !SIMPLE && (h->qscale == 0 && h->sps.transform_bypass);
284  const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) ? 3 : 1;
285 
286  for (p = 0; p < plane_count; p++) {
287  dest[p] = h->cur_pic.f.data[p] +
288  ((mb_x << PIXEL_SHIFT) + mb_y * h->linesize) * 16;
289  h->vdsp.prefetch(dest[p] + (h->mb_x & 3) * 4 * h->linesize + (64 << PIXEL_SHIFT),
290  h->linesize, 4);
291  }
292 
293  h->list_counts[mb_xy] = h->list_count;
294 
295  if (!SIMPLE && MB_FIELD(h)) {
296  linesize = h->mb_linesize = h->mb_uvlinesize = h->linesize * 2;
297  block_offset = &h->block_offset[48];
298  if (mb_y & 1) // FIXME move out of this function?
299  for (p = 0; p < 3; p++)
300  dest[p] -= h->linesize * 15;
301  if (FRAME_MBAFF(h)) {
302  int list;
303  for (list = 0; list < h->list_count; list++) {
304  if (!USES_LIST(mb_type, list))
305  continue;
306  if (IS_16X16(mb_type)) {
307  int8_t *ref = &h->ref_cache[list][scan8[0]];
308  fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (h->mb_y & 1), 1);
309  } else {
310  for (i = 0; i < 16; i += 4) {
311  int ref = h->ref_cache[list][scan8[i]];
312  if (ref >= 0)
313  fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,
314  8, (16 + ref) ^ (h->mb_y & 1), 1);
315  }
316  }
317  }
318  }
319  } else {
320  linesize = h->mb_linesize = h->mb_uvlinesize = h->linesize;
321  }
322 
323  if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
324  if (PIXEL_SHIFT) {
325  const int bit_depth = h->sps.bit_depth_luma;
327  init_get_bits(&gb, h->intra_pcm_ptr, 768 * bit_depth);
328 
329  for (p = 0; p < plane_count; p++)
330  for (i = 0; i < 16; i++) {
331  uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
332  for (j = 0; j < 16; j++)
333  tmp[j] = get_bits(&gb, bit_depth);
334  }
335  } else {
336  for (p = 0; p < plane_count; p++)
337  for (i = 0; i < 16; i++)
338  memcpy(dest[p] + i * linesize,
339  h->intra_pcm_ptr + p * 256 + i * 16, 16);
340  }
341  } else {
342  if (IS_INTRA(mb_type)) {
343  if (h->deblocking_filter)
344  xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,
345  linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
346 
347  for (p = 0; p < plane_count; p++)
348  hl_decode_mb_predict_luma(h, mb_type, 1, SIMPLE,
349  transform_bypass, PIXEL_SHIFT,
350  block_offset, linesize, dest[p], p);
351 
352  if (h->deblocking_filter)
353  xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,
354  linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
355  } else {
356  FUNC(hl_motion_444)(h, dest[0], dest[1], dest[2],
357  h->me.qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
358  h->me.qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
359  h->h264dsp.weight_h264_pixels_tab,
360  h->h264dsp.biweight_h264_pixels_tab);
361  }
362 
363  for (p = 0; p < plane_count; p++)
364  hl_decode_mb_idct_luma(h, mb_type, 1, SIMPLE, transform_bypass,
365  PIXEL_SHIFT, block_offset, linesize,
366  dest[p], p);
367  }
368 }
369 
370 #endif