2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
26 # define FUNC(n) AV_JOIN(n ## _simple_, BITS)
27 # define PIXEL_SHIFT (BITS >> 4)
29 # define FUNC(n) n ## _complex
30 # define PIXEL_SHIFT h->pixel_shift
35 #include "h264_mc_template.c"
39 #include "h264_mc_template.c"
41 static av_noinline void FUNC(hl_decode_mb)(H264Context *h)
43 MpegEncContext *const s = &h->s;
44 const int mb_x = s->mb_x;
45 const int mb_y = s->mb_y;
46 const int mb_xy = h->mb_xy;
47 const int mb_type = s->current_picture.f.mb_type[mb_xy];
48 uint8_t *dest_y, *dest_cb, *dest_cr;
49 int linesize, uvlinesize /*dct_offset*/;
51 int *block_offset = &h->block_offset[0];
52 const int transform_bypass = !SIMPLE && (s->qscale == 0 && h->sps.transform_bypass);
53 /* is_h264 should always be true if SVQ3 is disabled. */
54 const int is_h264 = !CONFIG_SVQ3_DECODER || SIMPLE || s->codec_id == AV_CODEC_ID_H264;
55 void (*idct_add)(uint8_t *dst, DCTELEM *block, int stride);
56 const int block_h = 16 >> s->chroma_y_shift;
57 const int chroma422 = CHROMA422;
59 dest_y = s->current_picture.f.data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * s->linesize) * 16;
60 dest_cb = s->current_picture.f.data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * s->uvlinesize * block_h;
61 dest_cr = s->current_picture.f.data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * s->uvlinesize * block_h;
63 s->dsp.prefetch(dest_y + (s->mb_x & 3) * 4 * s->linesize + (64 << PIXEL_SHIFT), s->linesize, 4);
64 s->dsp.prefetch(dest_cb + (s->mb_x & 7) * s->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
66 h->list_counts[mb_xy] = h->list_count;
68 if (!SIMPLE && MB_FIELD) {
69 linesize = h->mb_linesize = s->linesize * 2;
70 uvlinesize = h->mb_uvlinesize = s->uvlinesize * 2;
71 block_offset = &h->block_offset[48];
72 if (mb_y & 1) { // FIXME move out of this function?
73 dest_y -= s->linesize * 15;
74 dest_cb -= s->uvlinesize * (block_h - 1);
75 dest_cr -= s->uvlinesize * (block_h - 1);
79 for (list = 0; list < h->list_count; list++) {
80 if (!USES_LIST(mb_type, list))
82 if (IS_16X16(mb_type)) {
83 int8_t *ref = &h->ref_cache[list][scan8[0]];
84 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (s->mb_y & 1), 1);
86 for (i = 0; i < 16; i += 4) {
87 int ref = h->ref_cache[list][scan8[i]];
89 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,
90 8, (16 + ref) ^ (s->mb_y & 1), 1);
96 linesize = h->mb_linesize = s->linesize;
97 uvlinesize = h->mb_uvlinesize = s->uvlinesize;
98 // dct_offset = s->linesize * 16;
101 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
102 const int bit_depth = h->sps.bit_depth_luma;
106 init_get_bits(&gb, (uint8_t *)h->mb,
107 ff_h264_mb_sizes[h->sps.chroma_format_idc] * bit_depth);
109 for (i = 0; i < 16; i++) {
110 uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);
111 for (j = 0; j < 16; j++)
112 tmp_y[j] = get_bits(&gb, bit_depth);
114 if (SIMPLE || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
115 if (!h->sps.chroma_format_idc) {
116 for (i = 0; i < block_h; i++) {
117 uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
118 uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
119 for (j = 0; j < 8; j++) {
120 tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);
124 for (i = 0; i < block_h; i++) {
125 uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
126 for (j = 0; j < 8; j++)
127 tmp_cb[j] = get_bits(&gb, bit_depth);
129 for (i = 0; i < block_h; i++) {
130 uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
131 for (j = 0; j < 8; j++)
132 tmp_cr[j] = get_bits(&gb, bit_depth);
137 for (i = 0; i < 16; i++)
138 memcpy(dest_y + i * linesize, (uint8_t *)h->mb + i * 16, 16);
139 if (SIMPLE || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
140 if (!h->sps.chroma_format_idc) {
141 for (i = 0; i < 8; i++) {
142 memset(dest_cb + i*uvlinesize, 1 << (bit_depth - 1), 8);
143 memset(dest_cr + i*uvlinesize, 1 << (bit_depth - 1), 8);
146 uint8_t *src_cb = (uint8_t *)h->mb + 256;
147 uint8_t *src_cr = (uint8_t *)h->mb + 256 + block_h * 8;
148 for (i = 0; i < block_h; i++) {
149 memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
150 memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
156 if (IS_INTRA(mb_type)) {
157 if (h->deblocking_filter)
158 xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
159 uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
161 if (SIMPLE || !CONFIG_GRAY || !(s->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);
168 hl_decode_mb_predict_luma(h, mb_type, is_h264, SIMPLE,
169 transform_bypass, PIXEL_SHIFT,
170 block_offset, linesize, dest_y, 0);
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) {
177 FUNC(hl_motion_422)(h, dest_y, dest_cb, dest_cr,
178 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
179 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
180 h->h264dsp.weight_h264_pixels_tab,
181 h->h264dsp.biweight_h264_pixels_tab);
183 FUNC(hl_motion_420)(h, dest_y, dest_cb, dest_cr,
184 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
185 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
186 h->h264dsp.weight_h264_pixels_tab,
187 h->h264dsp.biweight_h264_pixels_tab);
191 hl_decode_mb_idct_luma(h, mb_type, is_h264, SIMPLE, transform_bypass,
192 PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
194 if ((SIMPLE || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) &&
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],
203 h->mb + (16 * 16 * 1 << PIXEL_SHIFT),
205 h->hpc.pred8x8_add[h->chroma_pred_mode](dest[1],
207 h->mb + (16 * 16 * 2 << PIXEL_SHIFT),
210 idct_add = s->dsp.add_pixels4;
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),
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),
232 qp[0] = h->chroma_qp[0] + 3;
233 qp[1] = h->chroma_qp[1] + 3;
235 qp[0] = h->chroma_qp[0];
236 qp[1] = h->chroma_qp[1];
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,
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,
258 ff_h264_chroma_qp[0][s->qscale + 12] - 12, 2);
265 if (h->cbp || IS_INTRA(mb_type)) {
266 s->dsp.clear_blocks(h->mb);
267 s->dsp.clear_blocks(h->mb + (24 * 16 << PIXEL_SHIFT));
271 #if !SIMPLE || BITS == 8
275 #include "h264_mc_template.c"
277 static av_noinline void FUNC(hl_decode_mb_444)(H264Context *h)
279 MpegEncContext *const s = &h->s;
280 const int mb_x = s->mb_x;
281 const int mb_y = s->mb_y;
282 const int mb_xy = h->mb_xy;
283 const int mb_type = s->current_picture.f.mb_type[mb_xy];
287 int *block_offset = &h->block_offset[0];
288 const int transform_bypass = !SIMPLE && (s->qscale == 0 && h->sps.transform_bypass);
289 const int plane_count = (SIMPLE || !CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) ? 3 : 1;
291 for (p = 0; p < plane_count; p++) {
292 dest[p] = s->current_picture.f.data[p] +
293 ((mb_x << PIXEL_SHIFT) + mb_y * s->linesize) * 16;
294 s->dsp.prefetch(dest[p] + (s->mb_x & 3) * 4 * s->linesize + (64 << PIXEL_SHIFT),
298 h->list_counts[mb_xy] = h->list_count;
300 if (!SIMPLE && MB_FIELD) {
301 linesize = h->mb_linesize = h->mb_uvlinesize = s->linesize * 2;
302 block_offset = &h->block_offset[48];
303 if (mb_y & 1) // FIXME move out of this function?
304 for (p = 0; p < 3; p++)
305 dest[p] -= s->linesize * 15;
308 for (list = 0; list < h->list_count; list++) {
309 if (!USES_LIST(mb_type, list))
311 if (IS_16X16(mb_type)) {
312 int8_t *ref = &h->ref_cache[list][scan8[0]];
313 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (s->mb_y & 1), 1);
315 for (i = 0; i < 16; i += 4) {
316 int ref = h->ref_cache[list][scan8[i]];
318 fill_rectangle(&h->ref_cache[list][scan8[i]], 2, 2,
319 8, (16 + ref) ^ (s->mb_y & 1), 1);
325 linesize = h->mb_linesize = h->mb_uvlinesize = s->linesize;
328 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
330 const int bit_depth = h->sps.bit_depth_luma;
332 init_get_bits(&gb, (uint8_t *)h->mb, 768 * bit_depth);
334 for (p = 0; p < plane_count; p++)
335 for (i = 0; i < 16; i++) {
336 uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
337 for (j = 0; j < 16; j++)
338 tmp[j] = get_bits(&gb, bit_depth);
341 for (p = 0; p < plane_count; p++)
342 for (i = 0; i < 16; i++)
343 memcpy(dest[p] + i * linesize,
344 (uint8_t *)h->mb + p * 256 + i * 16, 16);
347 if (IS_INTRA(mb_type)) {
348 if (h->deblocking_filter)
349 xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,
350 linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
352 for (p = 0; p < plane_count; p++)
353 hl_decode_mb_predict_luma(h, mb_type, 1, SIMPLE,
354 transform_bypass, PIXEL_SHIFT,
355 block_offset, linesize, dest[p], p);
357 if (h->deblocking_filter)
358 xchg_mb_border(h, dest[0], dest[1], dest[2], linesize,
359 linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
361 FUNC(hl_motion_444)(h, dest[0], dest[1], dest[2],
362 s->me.qpel_put, s->dsp.put_h264_chroma_pixels_tab,
363 s->me.qpel_avg, s->dsp.avg_h264_chroma_pixels_tab,
364 h->h264dsp.weight_h264_pixels_tab,
365 h->h264dsp.biweight_h264_pixels_tab);
368 for (p = 0; p < plane_count; p++)
369 hl_decode_mb_idct_luma(h, mb_type, 1, SIMPLE, transform_bypass,
370 PIXEL_SHIFT, block_offset, linesize,
373 if (h->cbp || IS_INTRA(mb_type)) {
374 s->dsp.clear_blocks(h->mb);
375 s->dsp.clear_blocks(h->mb + (24 * 16 << PIXEL_SHIFT));