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)(const H264Context *h, H264SliceContext *sl)
43 const int mb_x = sl->mb_x;
44 const int mb_y = sl->mb_y;
45 const int mb_xy = sl->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*/;
50 const int *block_offset = &h->block_offset[0];
51 const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->sps.transform_bypass);
52 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
53 const int block_h = 16 >> h->chroma_y_shift;
54 const int chroma422 = CHROMA422(h);
56 dest_y = h->cur_pic.f->data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
57 dest_cb = h->cur_pic.f->data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
58 dest_cr = h->cur_pic.f->data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
60 h->vdsp.prefetch(dest_y + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT), sl->linesize, 4);
61 h->vdsp.prefetch(dest_cb + (sl->mb_x & 7) * sl->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
63 h->list_counts[mb_xy] = sl->list_count;
65 if (!SIMPLE && MB_FIELD(sl)) {
66 linesize = sl->mb_linesize = sl->linesize * 2;
67 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
68 block_offset = &h->block_offset[48];
69 if (mb_y & 1) { // FIXME move out of this function?
70 dest_y -= sl->linesize * 15;
71 dest_cb -= sl->uvlinesize * (block_h - 1);
72 dest_cr -= sl->uvlinesize * (block_h - 1);
76 for (list = 0; list < sl->list_count; list++) {
77 if (!USES_LIST(mb_type, list))
79 if (IS_16X16(mb_type)) {
80 int8_t *ref = &sl->ref_cache[list][scan8[0]];
81 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
83 for (i = 0; i < 16; i += 4) {
84 int ref = sl->ref_cache[list][scan8[i]];
86 fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
87 8, (16 + ref) ^ (sl->mb_y & 1), 1);
93 linesize = sl->mb_linesize = sl->linesize;
94 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
95 // dct_offset = s->linesize * 16;
98 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
99 const int bit_depth = h->sps.bit_depth_luma;
103 init_get_bits(&gb, sl->intra_pcm_ptr,
104 ff_h264_mb_sizes[h->sps.chroma_format_idc] * bit_depth);
106 for (i = 0; i < 16; i++) {
107 uint16_t *tmp_y = (uint16_t *)(dest_y + i * linesize);
108 for (j = 0; j < 16; j++)
109 tmp_y[j] = get_bits(&gb, bit_depth);
111 if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
112 if (!h->sps.chroma_format_idc) {
113 for (i = 0; i < block_h; i++) {
114 uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
115 uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
116 for (j = 0; j < 8; j++) {
117 tmp_cb[j] = tmp_cr[j] = 1 << (bit_depth - 1);
121 for (i = 0; i < block_h; i++) {
122 uint16_t *tmp_cb = (uint16_t *)(dest_cb + i * uvlinesize);
123 for (j = 0; j < 8; j++)
124 tmp_cb[j] = get_bits(&gb, bit_depth);
126 for (i = 0; i < block_h; i++) {
127 uint16_t *tmp_cr = (uint16_t *)(dest_cr + i * uvlinesize);
128 for (j = 0; j < 8; j++)
129 tmp_cr[j] = get_bits(&gb, bit_depth);
134 for (i = 0; i < 16; i++)
135 memcpy(dest_y + i * linesize, sl->intra_pcm_ptr + i * 16, 16);
136 if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
137 if (!h->sps.chroma_format_idc) {
138 for (i = 0; i < 8; i++) {
139 memset(dest_cb + i * uvlinesize, 1 << (bit_depth - 1), 8);
140 memset(dest_cr + i * uvlinesize, 1 << (bit_depth - 1), 8);
143 const uint8_t *src_cb = sl->intra_pcm_ptr + 256;
144 const uint8_t *src_cr = sl->intra_pcm_ptr + 256 + block_h * 8;
145 for (i = 0; i < block_h; i++) {
146 memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
147 memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
153 if (IS_INTRA(mb_type)) {
154 if (sl->deblocking_filter)
155 xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
156 uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
158 if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
159 h->hpc.pred8x8[sl->chroma_pred_mode](dest_cb, uvlinesize);
160 h->hpc.pred8x8[sl->chroma_pred_mode](dest_cr, uvlinesize);
163 hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
164 transform_bypass, PIXEL_SHIFT,
165 block_offset, linesize, dest_y, 0);
167 if (sl->deblocking_filter)
168 xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
169 uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);
172 FUNC(hl_motion_422)(h, sl, dest_y, dest_cb, dest_cr,
173 h->qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
174 h->qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
175 h->h264dsp.weight_h264_pixels_tab,
176 h->h264dsp.biweight_h264_pixels_tab);
178 FUNC(hl_motion_420)(h, sl, dest_y, dest_cb, dest_cr,
179 h->qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
180 h->qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
181 h->h264dsp.weight_h264_pixels_tab,
182 h->h264dsp.biweight_h264_pixels_tab);
186 hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
187 PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
189 if ((SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) &&
191 uint8_t *dest[2] = { dest_cb, dest_cr };
192 if (transform_bypass) {
193 if (IS_INTRA(mb_type) && h->sps.profile_idc == 244 &&
194 (sl->chroma_pred_mode == VERT_PRED8x8 ||
195 sl->chroma_pred_mode == HOR_PRED8x8)) {
196 h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[0],
198 sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
200 h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[1],
202 sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
205 idct_add = h->h264dsp.h264_add_pixels4_clear;
206 for (j = 1; j < 3; j++) {
207 for (i = j * 16; i < j * 16 + 4; i++)
208 if (sl->non_zero_count_cache[scan8[i]] ||
209 dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
210 idct_add(dest[j - 1] + block_offset[i],
211 sl->mb + (i * 16 << PIXEL_SHIFT),
214 for (i = j * 16 + 4; i < j * 16 + 8; i++)
215 if (sl->non_zero_count_cache[scan8[i + 4]] ||
216 dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
217 idct_add(dest[j - 1] + block_offset[i + 4],
218 sl->mb + (i * 16 << PIXEL_SHIFT),
226 qp[0] = sl->chroma_qp[0] + 3;
227 qp[1] = sl->chroma_qp[1] + 3;
229 qp[0] = sl->chroma_qp[0];
230 qp[1] = sl->chroma_qp[1];
232 if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
233 h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
234 h->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
235 if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
236 h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
237 h->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
238 h->h264dsp.h264_idct_add8(dest, block_offset,
240 sl->non_zero_count_cache);
246 #if !SIMPLE || BITS == 8
250 #include "h264_mc_template.c"
252 static av_noinline void FUNC(hl_decode_mb_444)(const H264Context *h, H264SliceContext *sl)
254 const int mb_x = sl->mb_x;
255 const int mb_y = sl->mb_y;
256 const int mb_xy = sl->mb_xy;
257 const int mb_type = h->cur_pic.mb_type[mb_xy];
261 const int *block_offset = &h->block_offset[0];
262 const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->sps.transform_bypass);
263 const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) ? 3 : 1;
265 for (p = 0; p < plane_count; p++) {
266 dest[p] = h->cur_pic.f->data[p] +
267 ((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
268 h->vdsp.prefetch(dest[p] + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT),
272 h->list_counts[mb_xy] = sl->list_count;
274 if (!SIMPLE && MB_FIELD(sl)) {
275 linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize * 2;
276 block_offset = &h->block_offset[48];
277 if (mb_y & 1) // FIXME move out of this function?
278 for (p = 0; p < 3; p++)
279 dest[p] -= sl->linesize * 15;
280 if (FRAME_MBAFF(h)) {
282 for (list = 0; list < sl->list_count; list++) {
283 if (!USES_LIST(mb_type, list))
285 if (IS_16X16(mb_type)) {
286 int8_t *ref = &sl->ref_cache[list][scan8[0]];
287 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
289 for (i = 0; i < 16; i += 4) {
290 int ref = sl->ref_cache[list][scan8[i]];
292 fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
293 8, (16 + ref) ^ (sl->mb_y & 1), 1);
299 linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize;
302 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
304 const int bit_depth = h->sps.bit_depth_luma;
306 init_get_bits(&gb, sl->intra_pcm_ptr, 768 * bit_depth);
308 for (p = 0; p < plane_count; p++)
309 for (i = 0; i < 16; i++) {
310 uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
311 for (j = 0; j < 16; j++)
312 tmp[j] = get_bits(&gb, bit_depth);
315 for (p = 0; p < plane_count; p++)
316 for (i = 0; i < 16; i++)
317 memcpy(dest[p] + i * linesize,
318 sl->intra_pcm_ptr + p * 256 + i * 16, 16);
321 if (IS_INTRA(mb_type)) {
322 if (sl->deblocking_filter)
323 xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
324 linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
326 for (p = 0; p < plane_count; p++)
327 hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
328 transform_bypass, PIXEL_SHIFT,
329 block_offset, linesize, dest[p], p);
331 if (sl->deblocking_filter)
332 xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
333 linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
335 FUNC(hl_motion_444)(h, sl, dest[0], dest[1], dest[2],
336 h->qpel_put, h->h264chroma.put_h264_chroma_pixels_tab,
337 h->qpel_avg, h->h264chroma.avg_h264_chroma_pixels_tab,
338 h->h264dsp.weight_h264_pixels_tab,
339 h->h264dsp.biweight_h264_pixels_tab);
342 for (p = 0; p < plane_count; p++)
343 hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
344 PIXEL_SHIFT, block_offset, linesize,