path: root/libavcodec/h264_mb_template.c (plain)
blob: d5ea26a6e3fc21a2a25e552cc00b7a20cabbde58

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	static av_noinline void FUNC(hl_decode_mb)(const H264Context *h, H264SliceContext *sl)
42	{
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*/;
49	int i, j;
50	const int *block_offset = &h->block_offset[0];
51	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	const int block_h = 16 >> h->chroma_y_shift;
54	const int chroma422 = CHROMA422(h);
55
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;
59
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);
62
63	h->list_counts[mb_xy] = sl->list_count;
64
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);
73	}
74	if (FRAME_MBAFF(h)) {
75	int list;
76	for (list = 0; list < sl->list_count; list++) {
77	if (!USES_LIST(mb_type, list))
78	continue;
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);
82	} else {
83	for (i = 0; i < 16; i += 4) {
84	int ref = sl->ref_cache[list][scan8[i]];
85	if (ref >= 0)
86	fill_rectangle(&sl->ref_cache[list][scan8[i]], 2, 2,
87	8, (16 + ref) ^ (sl->mb_y & 1), 1);
88	}
89	}
90	}
91	}
92	} else {
93	linesize = sl->mb_linesize = sl->linesize;
94	uvlinesize = sl->mb_uvlinesize = sl->uvlinesize;
95	// dct_offset = s->linesize * 16;
96	}
97
98	if (!SIMPLE && IS_INTRA_PCM(mb_type)) {
99	const int bit_depth = h->ps.sps->bit_depth_luma;
100	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	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->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	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);
148	}
149	}
150	}
151	}
152	} else {
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);
157
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);
161	}
162
163	hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
164	transform_bypass, PIXEL_SHIFT,
165	block_offset, linesize, dest_y, 0);
166
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);
170	} else {
171	if (chroma422) {
172	FUNC(hl_motion_422)(h, sl, dest_y, dest_cb, dest_cr,
173	h->h264qpel.put_h264_qpel_pixels_tab,
174	h->h264chroma.put_h264_chroma_pixels_tab,
175	h->h264qpel.avg_h264_qpel_pixels_tab,
176	h->h264chroma.avg_h264_chroma_pixels_tab,
177	h->h264dsp.weight_h264_pixels_tab,
178	h->h264dsp.biweight_h264_pixels_tab);
179	} else {
180	FUNC(hl_motion_420)(h, sl, dest_y, dest_cb, dest_cr,
181	h->h264qpel.put_h264_qpel_pixels_tab,
182	h->h264chroma.put_h264_chroma_pixels_tab,
183	h->h264qpel.avg_h264_qpel_pixels_tab,
184	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, sl, mb_type, SIMPLE, transform_bypass,
191	PIXEL_SHIFT, block_offset, linesize, dest_y, 0);
192
193	if ((SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) &&
194	(sl->cbp & 0x30)) {
195	uint8_t *dest[2] = { dest_cb, dest_cr };
196	if (transform_bypass) {
197	if (IS_INTRA(mb_type) && h->ps.sps->profile_idc == 244 &&
198	(sl->chroma_pred_mode == VERT_PRED8x8 ||
199	sl->chroma_pred_mode == HOR_PRED8x8)) {
200	h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[0],
201	block_offset + 16,
202	sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
203	uvlinesize);
204	h->hpc.pred8x8_add[sl->chroma_pred_mode](dest[1],
205	block_offset + 32,
206	sl->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 (sl->non_zero_count_cache[scan8[i]] ||
213	dctcoef_get(sl->mb, PIXEL_SHIFT, i * 16))
214	idct_add(dest[j - 1] + block_offset[i],
215	sl->mb + (i * 16 << PIXEL_SHIFT),
216	uvlinesize);
217	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	if (chroma422) {
230	qp[0] = sl->chroma_qp[0] + 3;
231	qp[1] = sl->chroma_qp[1] + 3;
232	} else {
233	qp[0] = sl->chroma_qp[0];
234	qp[1] = sl->chroma_qp[1];
235	}
236	if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 0]])
237	h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 1 << PIXEL_SHIFT),
238	h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 1 : 4][qp[0]][0]);
239	if (sl->non_zero_count_cache[scan8[CHROMA_DC_BLOCK_INDEX + 1]])
240	h->h264dsp.h264_chroma_dc_dequant_idct(sl->mb + (16 * 16 * 2 << PIXEL_SHIFT),
241	h->ps.pps->dequant4_coeff[IS_INTRA(mb_type) ? 2 : 5][qp[1]][0]);
242	h->h264dsp.h264_idct_add8(dest, block_offset,
243	sl->mb, uvlinesize,
244	sl->non_zero_count_cache);
245	}
246	}
247	}
248	}
249
250	#if !SIMPLE || BITS == 8
251
252	#undef CHROMA_IDC
253	#define CHROMA_IDC 3
254	#include "h264_mc_template.c"
255
256	static av_noinline void FUNC(hl_decode_mb_444)(const H264Context *h, H264SliceContext *sl)
257	{
258	const int mb_x = sl->mb_x;
259	const int mb_y = sl->mb_y;
260	const int mb_xy = sl->mb_xy;
261	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	const int *block_offset = &h->block_offset[0];
266	const int transform_bypass = !SIMPLE && (sl->qscale == 0 && h->ps.sps->transform_bypass);
267	const int plane_count = (SIMPLE || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) ? 3 : 1;
268
269	for (p = 0; p < plane_count; p++) {
270	dest[p] = h->cur_pic.f->data[p] +
271	((mb_x << PIXEL_SHIFT) + mb_y * sl->linesize) * 16;
272	h->vdsp.prefetch(dest[p] + (sl->mb_x & 3) * 4 * sl->linesize + (64 << PIXEL_SHIFT),
273	sl->linesize, 4);
274	}
275
276	h->list_counts[mb_xy] = sl->list_count;
277
278	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	linesize = sl->mb_linesize = sl->mb_uvlinesize = sl->linesize;
304	}
305
306	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	if (IS_INTRA(mb_type)) {
326	if (sl->deblocking_filter)
327	xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
328	linesize, 1, 1, SIMPLE, PIXEL_SHIFT);
329
330	for (p = 0; p < plane_count; p++)
331	hl_decode_mb_predict_luma(h, sl, mb_type, SIMPLE,
332	transform_bypass, PIXEL_SHIFT,
333	block_offset, linesize, dest[p], p);
334
335	if (sl->deblocking_filter)
336	xchg_mb_border(h, sl, dest[0], dest[1], dest[2], linesize,
337	linesize, 0, 1, SIMPLE, PIXEL_SHIFT);
338	} else {
339	FUNC(hl_motion_444)(h, sl, dest[0], dest[1], dest[2],
340	h->h264qpel.put_h264_qpel_pixels_tab,
341	h->h264chroma.put_h264_chroma_pixels_tab,
342	h->h264qpel.avg_h264_qpel_pixels_tab,
343	h->h264chroma.avg_h264_chroma_pixels_tab,
344	h->h264dsp.weight_h264_pixels_tab,
345	h->h264dsp.biweight_h264_pixels_tab);
346	}
347
348	for (p = 0; p < plane_count; p++)
349	hl_decode_mb_idct_luma(h, sl, mb_type, SIMPLE, transform_bypass,
350	PIXEL_SHIFT, block_offset, linesize,
351	dest[p], p);
352	}
353	}
354
355	#endif
356