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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 FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "svq3.h"
23 
24 #undef FUNC
25 #undef PIXEL_SHIFT
26 
27 #if SIMPLE
28 # define FUNC(n) AV_JOIN(n ## _simple_, BITS)
29 # define PIXEL_SHIFT (BITS >> 4)
30 #else
31 # define FUNC(n) n ## _complex
32 # define PIXEL_SHIFT h->pixel_shift
33 #endif
34 
35 #undef CHROMA_IDC
36 #define CHROMA_IDC 1
37 #include "h264_mc_template.c"
38 
39 #undef CHROMA_IDC
40 #define CHROMA_IDC 2
41 #include "h264_mc_template.c"
42 
43 static av_noinline void FUNC(hl_decode_mb)(H264Context *h)
44 {
45  const int mb_x = h->mb_x;
46  const int mb_y = h->mb_y;
47  const int mb_xy = h->mb_xy;
48  const int mb_type = h->cur_pic.mb_type[mb_xy];
49  uint8_t *dest_y, *dest_cb, *dest_cr;
50  int linesize, uvlinesize /*dct_offset*/;
51  int i, j;
52  int *block_offset = &h->block_offset[0];
53  const int transform_bypass = !SIMPLE && (h->qscale == 0 && h->sps.transform_bypass);
54  /* is_h264 should always be true if SVQ3 is disabled. */
55  const int is_h264 = !CONFIG_SVQ3_DECODER || SIMPLE || h->avctx->codec_id == AV_CODEC_ID_H264;
56  void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
57  const int block_h = 16 >> h->chroma_y_shift;
58  const int chroma422 = CHROMA422(h);
59 
60  dest_y = h->cur_pic.f.data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * h->linesize) * 16;
61  dest_cb = h->cur_pic.f.data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * h->uvlinesize * block_h;
62  dest_cr = h->cur_pic.f.data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * h->uvlinesize * block_h;
63 
64  h->vdsp.prefetch(dest_y + (h->mb_x & 3) * 4 * h->linesize + (64 << PIXEL_SHIFT), h->linesize, 4);
65  h->vdsp.prefetch(dest_cb + (h->mb_x & 7) * h->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
66 
67  h->list_counts[mb_xy] = h->list_count;
68 
69  if (!SIMPLE && MB_FIELD(h)) {
70  linesize = h->mb_linesize = h->linesize * 2;
71  uvlinesize = h->mb_uvlinesize = h->uvlinesize * 2;
72  block_offset = &h->block_offset[48];
73  if (mb_y & 1) { // FIXME move out of this function?
74  dest_y -= h->linesize * 15;
75  dest_cb -= h->uvlinesize * (block_h - 1);
76  dest_cr -= h->uvlinesize * (block_h - 1);
77  }
78  if (FRAME_MBAFF(h)) {
79  int list;
80  for (list = 0; list < h->list_count; list++) {
81  if (!USES_LIST(mb_type, list))
82  continue;
83  if (IS_16X16(mb_type)) {
84  int8_t *ref = &h->ref_cache[list][scan8[0]];
85  fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (h->mb_y & 1), 1);
86  } else {
87  for (i = 0; i < 16; i += 4) {
88  int ref = h->ref_cache[list][scan8[i]];
89  if (ref >= 0)
90  fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,
91  8, (16 + ref) ^ (h->mb_y & 1), 1);
92  }
93  }
94  }
95  }
96  } else {
97  linesize = h->mb_linesize = h->linesize;
98  uvlinesize = h->mb_uvlinesize = h->uvlinesize;
99  // dct_offset = s->linesize * 16;
100  }
101 
102  if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
103  const int bit_depth = h->sps.bit_depth_luma;
104  if (PIXEL_SHIFT) {
105  int j;
106  GetBitContext gb;
107  init_get_bits(&gb, h->intra_pcm_ptr,
108  ff_h264_mb_sizes[h->sps.chroma_format_idc] * bit_depth);
109 
110  for (i = 0; i < 16; i++) {
111  uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);
112  for (j = 0; j < 16; j++)
113  tmp_y[j] = get_bits(&gb, bit_depth);
114  }
115  if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
116  if (!h->sps.chroma_format_idc) {
117  for (i = 0; i < block_h; i++) {
118  uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
119  uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
120  for (j = 0; j < 8; j++) {
121  tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);
122  }
123  }
124  } else {
125  for (i = 0; i < block_h; i++) {
126  uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
127  for (j = 0; j < 8; j++)
128  tmp_cb[j] = get_bits(&gb, bit_depth);
129  }
130  for (i = 0; i < block_h; i++) {
131  uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
132  for (j = 0; j < 8; j++)
133  tmp_cr[j] = get_bits(&gb, bit_depth);
134  }
135  }
136  }
137  } else {
138  for (i = 0; i < 16; i++)
139  memcpy(dest_y + i * linesize, h->intra_pcm_ptr + i * 16, 16);
140  if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
141  if (!h->sps.chroma_format_idc) {
142  for (i = 0; i < 8; i++) {
143  memset(dest_cb + i * uvlinesize, 1 << (bit_depth - 1), 8);
144  memset(dest_cr + i * uvlinesize, 1 << (bit_depth - 1), 8);
145  }
146  } else {
147  const uint8_t *src_cb = h->intra_pcm_ptr + 256;
148  const uint8_t *src_cr = h->intra_pcm_ptr + 256 + block_h * 8;
149  for (i = 0; i < block_h; i++) {
150  memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
151  memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
152  }
153  }
154  }
155  }
156  } else {
157  if (IS_INTRA(mb_type)) {
158  if (h->deblocking_filter)
159  xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
160  uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
161 
162  if (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
163  h->hpc.pred8x8[h->chroma_pred_mode](dest_cb, uvlinesize);
164  h->hpc.pred8x8[h->chroma_pred_mode](dest_cr, uvlinesize);
165  }
166 
167  hl_decode_mb_predict_luma(h, mb_type, is_h264, SIMPLE,
168  transform_bypass, PIXEL_SHIFT,
169  block_offset, linesize, dest_y, 0);
170 
171  if (h->deblocking_filter)
172  xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
173  uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);
174  } else if (is_h264) {
175  if (chroma422) {
176  FUNC(hl_motion_422)(h, dest_y, dest_cb, dest_cr,
177  h->qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
178  h->qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
179  h->h264dsp.weight_h264_pixels_tab,
180  h->h264dsp.biweight_h264_pixels_tab);
181  } else {
182  FUNC(hl_motion_420)(h, dest_y, dest_cb, dest_cr,
183  h->qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
184  h->qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
185  h->h264dsp.weight_h264_pixels_tab,
186  h->h264dsp.biweight_h264_pixels_tab);
187  }
188  }
189 
190  hl_decode_mb_idct_luma(h, mb_type, is_h264, SIMPLE, transform_bypass,
191  PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
192 
193  if ((SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) &&
194  (h->cbp & 0x30)) {
195  uint8_t *dest[2] = { dest_cb, dest_cr };
196  if (transform_bypass) {
197  if (IS_INTRA(mb_type) && h->sps.profile_idc == 244 &&
198  (h->chroma_pred_mode == VERT_PRED8x8 ||
199  h->chroma_pred_mode == HOR_PRED8x8)) {
200  h->hpc.pred8x8_add[h->chroma_pred_mode](dest[0],
201  block_offset + 16,
202  h->mb + (16 * 16 * 1 << PIXEL_SHIFT),
203  uvlinesize);
204  h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1],
205  block_offset + 32,
206  h->mb + (16 * 16 * 2 << PIXEL_SHIFT),
207  uvlinesize);
208  } else {
209  idct_add = h->h264dsp.h264_add_pixels4_clear;
210  for (j = 1; j < 3; j++) {
211  for (i = j * 16; i < j * 16 + 4; i++)
212  if (h->non_zero_count_cache[scan8[i]] ||
213  dctcoef_get(h->mb, PIXEL_SHIFT, i * 16))
214  idct_add(dest[j - 1] + block_offset[i],
215  h->mb + (i * 16 << PIXEL_SHIFT),
216  uvlinesize);
217  if (chroma422) {
218  for (i = j * 16 + 4; i < j * 16 + 8; i++)
219  if (h->non_zero_count_cache[scan8[i + 4]] ||
220  dctcoef_get(h->mb, PIXEL_SHIFT, i * 16))
221  idct_add(dest[j - 1] + block_offset[i + 4],
222  h->mb + (i * 16 << PIXEL_SHIFT),
223  uvlinesize);
224  }
225  }
226  }
227  } else {
228  if (is_h264) {
229  int qp[2];
230  if (chroma422) {
231  qp[0] = h->chroma_qp[0] + 3;
232  qp[1] = h->chroma_qp[1] + 3;
233  } else {
234  qp[0] = h->chroma_qp[0];
235  qp[1] = h->chroma_qp[1];
236  }
237  if (h->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
238  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16 * 16 * 1 << PIXEL_SHIFT),
239  h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
240  if (h->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
241  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + (16 * 16 * 2 << PIXEL_SHIFT),
242  h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
243  h->h264dsp.h264_idct_add8(dest, block_offset,
244  h->mb, uvlinesize,
245  h->non_zero_count_cache);
246  } else if (CONFIG_SVQ3_DECODER) {
247  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16 * 16 * 1,
248  h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][h->chroma_qp[0]][0]);
249  h->h264dsp.h264_chroma_dc_dequant_idct(h->mb + 16 * 16 * 2,
250  h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][h->chroma_qp[1]][0]);
251  for (j = 1; j < 3; j++) {
252  for (i = j * 16; i < j * 16 + 4; i++)
253  if (h->non_zero_count_cache[scan8[i]] || h->mb[i * 16]) {
254  uint8_t *const ptr = dest[j - 1] + block_offset[i];
255  ff_svq3_add_idct_c(ptr, h->mb + i * 16,
256  uvlinesize,
257  ff_h264_chroma_qp[0][h->qscale + 12] - 12, 2);
258  }
259  }
260  }
261  }
262  }
263  }
264 }
265 
266 #if !SIMPLE || BITS == 8
267 
268 #undef CHROMA_IDC
269 #define CHROMA_IDC 3
270 #include "h264_mc_template.c"
271 
272 static av_noinline void FUNC(hl_decode_mb_444)(H264Context *h)
273 {
274  const int mb_x = h->mb_x;
275  const int mb_y = h->mb_y;
276  const int mb_xy = h->mb_xy;
277  const int mb_type = h->cur_pic.mb_type[mb_xy];
278  uint8_t *dest[3];
279  int linesize;
280  int i, j, p;
281  int *block_offset = &h->block_offset[0];
282  const int transform_bypass = !SIMPLE && (h->qscale == 0 && h->sps.transform_bypass);
283  const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) ? 3 : 1;
284 
285  for (p = 0; p < plane_count; p++) {
286  dest[p] = h->cur_pic.f.data[p] +
287  ((mb_x << PIXEL_SHIFT) + mb_y * h->linesize) * 16;
288  h->vdsp.prefetch(dest[p] + (h->mb_x & 3) * 4 * h->linesize + (64 << PIXEL_SHIFT),
289  h->linesize, 4);
290  }
291 
292  h->list_counts[mb_xy] = h->list_count;
293 
294  if (!SIMPLE && MB_FIELD(h)) {
295  linesize = h->mb_linesize = h->mb_uvlinesize = h->linesize * 2;
296  block_offset = &h->block_offset[48];
297  if (mb_y & 1) // FIXME move out of this function?
298  for (p = 0; p < 3; p++)
299  dest[p] -= h->linesize * 15;
300  if (FRAME_MBAFF(h)) {
301  int list;
302  for (list = 0; list < h->list_count; list++) {
303  if (!USES_LIST(mb_type, list))
304  continue;
305  if (IS_16X16(mb_type)) {
306  int8_t *ref = &h->ref_cache[list][scan8[0]];
307  fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (h->mb_y & 1), 1);
308  } else {
309  for (i = 0; i < 16; i += 4) {
310  int ref = h->ref_cache[list][scan8[i]];
311  if (ref >= 0)
312  fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,
313  8, (16 + ref) ^ (h->mb_y & 1), 1);
314  }
315  }
316  }
317  }
318  } else {
319  linesize = h->mb_linesize = h->mb_uvlinesize = h->linesize;
320  }
321 
322  if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
323  if (PIXEL_SHIFT) {
324  const int bit_depth = h->sps.bit_depth_luma;
325  GetBitContext gb;
326  init_get_bits(&gb, h->intra_pcm_ptr, 768 * bit_depth);
327 
328  for (p = 0; p < plane_count; p++)
329  for (i = 0; i < 16; i++) {
330  uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
331  for (j = 0; j < 16; j++)
332  tmp[j] = get_bits(&gb, bit_depth);
333  }
334  } else {
335  for (p = 0; p < plane_count; p++)
336  for (i = 0; i < 16; i++)
337  memcpy(dest[p] + i * linesize,
338  h->intra_pcm_ptr + p * 256 + i * 16, 16);
339  }
340  } else {
341  if (IS_INTRA(mb_type)) {
342  if (h->deblocking_filter)
343  xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,
344  linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
345 
346  for (p = 0; p < plane_count; p++)
347  hl_decode_mb_predict_luma(h, mb_type, 1, SIMPLE,
348  transform_bypass, PIXEL_SHIFT,
349  block_offset, linesize, dest[p], p);
350 
351  if (h->deblocking_filter)
352  xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,
353  linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
354  } else {
355  FUNC(hl_motion_444)(h, dest[0], dest[1], dest[2],
356  h->qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
357  h->qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
358  h->h264dsp.weight_h264_pixels_tab,
359  h->h264dsp.biweight_h264_pixels_tab);
360  }
361 
362  for (p = 0; p < plane_count; p++)
363  hl_decode_mb_idct_luma(h, mb_type, 1, SIMPLE, transform_bypass,
364  PIXEL_SHIFT, block_offset, linesize,
365  dest[p], p);
366  }
367 }
368 
369 #endif
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