FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/h264_mb_template.c
Date: 2026-01-16 07:34:38
Exec Total Coverage
Lines: 147 204 72.1%
Functions: 5 5 100.0%
Branches: 84 144 58.3%
Line Branch Exec Source
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 #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
41 30321316 static av_noinline void FUNC(hl_decode_mb)(const H264Context *h, H264SliceContext *sl)
42 {
43 30321316 const int mb_x = sl->mb_x;
44 30321316 const int mb_y = sl->mb_y;
45 30321316 const int mb_xy = sl->mb_xy;
46 30321316 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 30321316 const int *block_offset = &h->block_offset[0];
51
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 30321316 const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
52 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
53 30321316 const int block_h = 16 >> h->chroma_y_shift;
54 30321316 const int chroma422 = CHROMA422(h);
55
56 30321316 dest_y = h->cur_pic.f->data[0] + ((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
57 30321316 dest_cb = h->cur_pic.f->data[1] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
58 30321316 dest_cr = h->cur_pic.f->data[2] + (mb_x << PIXEL_SHIFT) * 8 + mb_y * sl->uvlinesize * block_h;
59
60 30321316 h->vdsp.prefetch(dest_y + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT), sl->linesize, 4);
61 30321316 h->vdsp.prefetch(dest_cb + (sl->mb_x & 7) * sl->uvlinesize + (64 << PIXEL_SHIFT), dest_cr - dest_cb, 2);
62
63 30321316 h->list_counts[mb_xy] = sl->list_count;
64
65
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 14144532 if (!SIMPLE && MB_FIELD(sl)) {
66 10739910 linesize = sl->mb_linesize = sl->linesize * 2;
67 10739910 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize * 2;
68 10739910 block_offset = &h->block_offset[48];
69
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 10739910 if (mb_y & 1) { // FIXME move out of this function?
70 5361592 dest_y -= sl->linesize * 15;
71 5361592 dest_cb -= sl->uvlinesize * (block_h - 1);
72 5361592 dest_cr -= sl->uvlinesize * (block_h - 1);
73 }
74
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 10739910 if (FRAME_MBAFF(h)) {
75 int list;
76
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 2922076 for (list = 0; list < sl->list_count; list++) {
77
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 1600940 if (!USES_LIST(mb_type, list))
78 401920 continue;
79
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 1199020 if (IS_16X16(mb_type)) {
80 594758 int8_t *ref = &sl->ref_cache[list][scan8[0]];
81 594758 fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
82 } else {
83
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 3021310 for (i = 0; i < 16; i += 4) {
84 2417048 int ref = sl->ref_cache[list][scan8[i]];
85
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 2417048 if (ref >= 0)
86 2120498 fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
87 2120498 8, (16 + ref) ^ (sl->mb_y & 1), 1);
88 }
89 }
90 }
91 }
92 } else {
93 19581406 linesize = sl->mb_linesize = sl->linesize;
94 19581406 uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
95 // dct_offset = s->linesize * 16;
96 }
97
98
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 14144532 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
99 46210 const int bit_depth = h->ps.sps->bit_depth_luma;
100
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 46210 if (PIXEL_SHIFT) {
101 int j;
102 GetBitContext gb;
103 ✗ init_get_bits(&gb, sl->intra_pcm_ptr,
104 ✗ ff_h264_mb_sizes[h->ps.sps->chroma_format_idc] * bit_depth);
105
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);
110 }
111 if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
112 ✗ if (!h->ps.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);
118 }
119 }
120 } else {
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);
125 }
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);
130 }
131 }
132 }
133 } else {
134
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 785570 for (i = 0; i < 16; i++)
135 739360 memcpy(dest_y + i * linesize, sl->intra_pcm_ptr + i * 16, 16);
136 if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
137
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 46210 if (!h->ps.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);
141 }
142 } else {
143 46210 const uint8_t *src_cb = sl->intra_pcm_ptr + 256;
144 46210 const uint8_t *src_cr = sl->intra_pcm_ptr + 256 + block_h * 8;
145
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 415890 for (i = 0; i < block_h; i++) {
146 369680 memcpy(dest_cb + i * uvlinesize, src_cb + i * 8, 8);
147 369680 memcpy(dest_cr + i * uvlinesize, src_cr + i * 8, 8);
148 }
149 }
150 }
151 }
152 } else {
153
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 30275106 if (IS_INTRA(mb_type)) {
154
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 8115236 if (sl->deblocking_filter)
155 6674580 xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
156 3064054 uvlinesize, 1, 0, SIMPLE, PIXEL_SHIFT);
157
158 if (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
159 8115236 h->hpc.pred8x8[sl->chroma_pred_mode](dest_cb, uvlinesize);
160 8115236 h->hpc.pred8x8[sl->chroma_pred_mode](dest_cr, uvlinesize);
161 }
162
163 8115236 hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
164 3475434 transform_bypass, PIXEL_SHIFT,
165 block_offset, linesize, dest_y, 0);
166
167
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 8115236 if (sl->deblocking_filter)
168 6674580 xchg_mb_border(h, sl, dest_y, dest_cb, dest_cr, linesize,
169 3064054 uvlinesize, 0, 0, SIMPLE, PIXEL_SHIFT);
170 } else {
171
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 22159870 if (chroma422) {
172 114570 FUNC(hl_motion_422)(h, sl, dest_y, dest_cb, dest_cr,
173 114570 h->h264qpel.put_h264_qpel_pixels_tab,
174 114570 h->h264chroma.put_h264_chroma_pixels_tab,
175 114570 h->h264qpel.avg_h264_qpel_pixels_tab,
176 114570 h->h264chroma.avg_h264_chroma_pixels_tab,
177 114570 h->h264dsp.weight_h264_pixels_tab,
178 114570 h->h264dsp.biweight_h264_pixels_tab);
179 } else {
180 22045300 FUNC(hl_motion_420)(h, sl, dest_y, dest_cb, dest_cr,
181 22045300 h->h264qpel.put_h264_qpel_pixels_tab,
182 22045300 h->h264chroma.put_h264_chroma_pixels_tab,
183 22045300 h->h264qpel.avg_h264_qpel_pixels_tab,
184 22045300 h->h264chroma.avg_h264_chroma_pixels_tab,
185 22045300 h->h264dsp.weight_h264_pixels_tab,
186 22045300 h->h264dsp.biweight_h264_pixels_tab);
187 }
188 }
189
190 30275106 hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
191 14098322 PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
192
193 30275106 if ((SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) &&
194
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 30275106 (sl->cbp & 0x30)) {
195 10983070 uint8_t *dest[2] = { dest_cb, dest_cr };
196
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 10983070 if (transform_bypass) {
197
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 38362 if (IS_INTRA(mb_type) && h->ps.sps->profile_idc == 244 &&
198
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 5624 (sl->chroma_pred_mode == VERT_PRED8x8 ||
199
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 3366 sl->chroma_pred_mode == HOR_PRED8x8)) {
200 5146 h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[0],
201 block_offset + 16,
202 5146 sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
203 uvlinesize);
204 5146 h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[1],
205 block_offset + 32,
206 5146 sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
207 uvlinesize);
208 } else {
209 33216 idct_add = h->h264dsp.h264_add_pixels4_clear;
210
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 99648 for (j = 1; j < 3; j++) {
211
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 332160 for (i = j * 16; i < j * 16 + 4; i++)
212
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 332538 if (sl->non_zero_count_cache[scan8[i]] ||
213 66810 dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
214 200348 idct_add(dest[j - 1] + block_offset[i],
215 200348 sl->mb + (i * 16 << PIXEL_SHIFT),
216 uvlinesize);
217
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 66432 if (chroma422) {
218 ✗ for (i = j * 16 + 4; i < j * 16 + 8; i++)
219 ✗ if (sl->non_zero_count_cache[scan8[i + 4]] ||
220 ✗ dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
221 ✗ idct_add(dest[j - 1] + block_offset[i + 4],
222 ✗ sl->mb + (i * 16 << PIXEL_SHIFT),
223 uvlinesize);
224 }
225 }
226 }
227 } else {
228 int qp[2];
229
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 10944708 if (chroma422) {
230 1350636 qp[0] = sl->chroma_qp[0] + 3;
231 1350636 qp[1] = sl->chroma_qp[1] + 3;
232 } else {
233 9594072 qp[0] = sl->chroma_qp[0];
234 9594072 qp[1] = sl->chroma_qp[1];
235 }
236
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 10944708 if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
237 15786844 h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
238
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 7893422 h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
239
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 10944708 if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
240 13762608 h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
241
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 6881304 h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
242 10944708 h->h264dsp.h264_idct_add8(dest, block_offset,
243 10944708 sl->mb, uvlinesize,
244 10944708 sl->non_zero_count_cache);
245 }
246 }
247 }
248 30321316 }
249
250 #if !SIMPLE || BITS == 8
251
252 #undef CHROMA_IDC
253 #define CHROMA_IDC 3
254 #include "h264_mc_template.c"
255
256 385316 static av_noinline void FUNC(hl_decode_mb_444)(const H264Context *h, H264SliceContext *sl)
257 {
258 385316 const int mb_x = sl->mb_x;
259 385316 const int mb_y = sl->mb_y;
260 385316 const int mb_xy = sl->mb_xy;
261 385316 const int mb_type = h->cur_pic.mb_type[mb_xy];
262 uint8_t *dest[3];
263 int linesize;
264 int i, j, p;
265 385316 const int *block_offset = &h->block_offset[0];
266
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 385316 const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
267 385316 const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) ? 3 : 1;
268
269
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 1541264 for (p = 0; p < plane_count; p++) {
270 1155948 dest[p] = h->cur_pic.f->data[p] +
271 1155948 ((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
272 1155948 h->vdsp.prefetch(dest[p] + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT),
273 sl->linesize, 4);
274 }
275
276 385316 h->list_counts[mb_xy] = sl->list_count;
277
278
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 265184 if (!SIMPLE && MB_FIELD(sl)) {
279 ✗ linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize * 2;
280 ✗ block_offset = &h->block_offset[48];
281 ✗ if (mb_y & 1) // FIXME move out of this function?
282 ✗ for (p = 0; p < 3; p++)
283 ✗ dest[p] -= sl->linesize * 15;
284 ✗ if (FRAME_MBAFF(h)) {
285 int list;
286 ✗ for (list = 0; list < sl->list_count; list++) {
287 ✗ if (!USES_LIST(mb_type, list))
288 ✗ continue;
289 ✗ if (IS_16X16(mb_type)) {
290 ✗ int8_t *ref = &sl->ref_cache[list][scan8[0]];
291 ✗ fill_rectangle(ref, 4, 4, 8, (16 + *ref) ^ (sl->mb_y & 1), 1);
292 } else {
293 ✗ for (i = 0; i < 16; i += 4) {
294 ✗ int ref = sl->ref_cache[list][scan8[i]];
295 ✗ if (ref >= 0)
296 ✗ fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
297 ✗ 8, (16 + ref) ^ (sl->mb_y & 1), 1);
298 }
299 }
300 }
301 }
302 } else {
303 385316 linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize;
304 }
305
306
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 265184 if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
307 ✗ if (PIXEL_SHIFT) {
308 ✗ const int bit_depth = h->ps.sps->bit_depth_luma;
309 GetBitContext gb;
310 ✗ init_get_bits(&gb, sl->intra_pcm_ptr, 768 * bit_depth);
311
312 ✗ for (p = 0; p < plane_count; p++)
313 ✗ for (i = 0; i < 16; i++) {
314 ✗ uint16_t *tmp = (uint16_t *)(dest[p] + i * linesize);
315 ✗ for (j = 0; j < 16; j++)
316 ✗ tmp[j] = get_bits(&gb, bit_depth);
317 }
318 } else {
319 ✗ for (p = 0; p < plane_count; p++)
320 ✗ for (i = 0; i < 16; i++)
321 ✗ memcpy(dest[p] + i * linesize,
322 ✗ sl->intra_pcm_ptr + p * 256 + i * 16, 16);
323 }
324 } else {
325
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 385316 if (IS_INTRA(mb_type)) {
326
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 132868 if (sl->deblocking_filter)
327 123640 xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
328 3508 linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
329
330
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 531472 for (p = 0; p < plane_count; p++)
331 398604 hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
332 38208 transform_bypass, PIXEL_SHIFT,
333 block_offset, linesize, dest[p], p);
334
335
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 132868 if (sl->deblocking_filter)
336 123640 xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
337 3508 linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
338 } else {
339 252448 FUNC(hl_motion_444)(h, sl, dest[0], dest[1], dest[2],
340 252448 h->h264qpel.put_h264_qpel_pixels_tab,
341 252448 h->h264chroma.put_h264_chroma_pixels_tab,
342 252448 h->h264qpel.avg_h264_qpel_pixels_tab,
343 252448 h->h264chroma.avg_h264_chroma_pixels_tab,
344 252448 h->h264dsp.weight_h264_pixels_tab,
345 252448 h->h264dsp.biweight_h264_pixels_tab);
346 }
347
348
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 1541264 for (p = 0; p < plane_count; p++)
349 1155948 hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
350 795552 PIXEL_SHIFT, block_offset, linesize,
351 dest[p], p);
352 }
353 385316 }
354
355 #endif
356