blob: 84dd6457bd318c47704e7ef80e06e14726e621b0
1 | /* |
2 | * This file is part of FFmpeg. |
3 | * |
4 | * FFmpeg is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * FFmpeg is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with FFmpeg; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
17 | */ |
18 | |
19 | #include "config.h" |
20 | #include "libavutil/attributes.h" |
21 | #include "libavutil/common.h" |
22 | #include "avcodec.h" |
23 | #include "dct.h" |
24 | #include "faanidct.h" |
25 | #include "idctdsp.h" |
26 | #include "simple_idct.h" |
27 | #include "xvididct.h" |
28 | |
29 | av_cold void ff_init_scantable(uint8_t *permutation, ScanTable *st, |
30 | const uint8_t *src_scantable) |
31 | { |
32 | int i, end; |
33 | |
34 | st->scantable = src_scantable; |
35 | |
36 | for (i = 0; i < 64; i++) { |
37 | int j = src_scantable[i]; |
38 | st->permutated[i] = permutation[j]; |
39 | } |
40 | |
41 | end = -1; |
42 | for (i = 0; i < 64; i++) { |
43 | int j = st->permutated[i]; |
44 | if (j > end) |
45 | end = j; |
46 | st->raster_end[i] = end; |
47 | } |
48 | } |
49 | |
50 | av_cold void ff_init_scantable_permutation(uint8_t *idct_permutation, |
51 | enum idct_permutation_type perm_type) |
52 | { |
53 | int i; |
54 | |
55 | if (ARCH_X86) |
56 | if (ff_init_scantable_permutation_x86(idct_permutation, |
57 | perm_type)) |
58 | return; |
59 | |
60 | switch (perm_type) { |
61 | case FF_IDCT_PERM_NONE: |
62 | for (i = 0; i < 64; i++) |
63 | idct_permutation[i] = i; |
64 | break; |
65 | case FF_IDCT_PERM_LIBMPEG2: |
66 | for (i = 0; i < 64; i++) |
67 | idct_permutation[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2); |
68 | break; |
69 | case FF_IDCT_PERM_TRANSPOSE: |
70 | for (i = 0; i < 64; i++) |
71 | idct_permutation[i] = ((i & 7) << 3) | (i >> 3); |
72 | break; |
73 | case FF_IDCT_PERM_PARTTRANS: |
74 | for (i = 0; i < 64; i++) |
75 | idct_permutation[i] = (i & 0x24) | ((i & 3) << 3) | ((i >> 3) & 3); |
76 | break; |
77 | default: |
78 | av_log(NULL, AV_LOG_ERROR, |
79 | "Internal error, IDCT permutation not set\n"); |
80 | } |
81 | } |
82 | |
83 | void (*ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, ptrdiff_t line_size); |
84 | void (*ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, ptrdiff_t line_size); |
85 | |
86 | static void put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels, |
87 | ptrdiff_t line_size) |
88 | { |
89 | int i; |
90 | |
91 | /* read the pixels */ |
92 | for (i = 0; i < 8; i++) { |
93 | pixels[0] = av_clip_uint8(block[0]); |
94 | pixels[1] = av_clip_uint8(block[1]); |
95 | pixels[2] = av_clip_uint8(block[2]); |
96 | pixels[3] = av_clip_uint8(block[3]); |
97 | pixels[4] = av_clip_uint8(block[4]); |
98 | pixels[5] = av_clip_uint8(block[5]); |
99 | pixels[6] = av_clip_uint8(block[6]); |
100 | pixels[7] = av_clip_uint8(block[7]); |
101 | |
102 | pixels += line_size; |
103 | block += 8; |
104 | } |
105 | } |
106 | |
107 | static void put_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels, |
108 | int line_size) |
109 | { |
110 | int i; |
111 | |
112 | /* read the pixels */ |
113 | for(i=0;i<4;i++) { |
114 | pixels[0] = av_clip_uint8(block[0]); |
115 | pixels[1] = av_clip_uint8(block[1]); |
116 | pixels[2] = av_clip_uint8(block[2]); |
117 | pixels[3] = av_clip_uint8(block[3]); |
118 | |
119 | pixels += line_size; |
120 | block += 8; |
121 | } |
122 | } |
123 | |
124 | static void put_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels, |
125 | int line_size) |
126 | { |
127 | int i; |
128 | |
129 | /* read the pixels */ |
130 | for(i=0;i<2;i++) { |
131 | pixels[0] = av_clip_uint8(block[0]); |
132 | pixels[1] = av_clip_uint8(block[1]); |
133 | |
134 | pixels += line_size; |
135 | block += 8; |
136 | } |
137 | } |
138 | |
139 | static void put_signed_pixels_clamped_c(const int16_t *block, |
140 | uint8_t *av_restrict pixels, |
141 | ptrdiff_t line_size) |
142 | { |
143 | int i, j; |
144 | |
145 | for (i = 0; i < 8; i++) { |
146 | for (j = 0; j < 8; j++) { |
147 | if (*block < -128) |
148 | *pixels = 0; |
149 | else if (*block > 127) |
150 | *pixels = 255; |
151 | else |
152 | *pixels = (uint8_t) (*block + 128); |
153 | block++; |
154 | pixels++; |
155 | } |
156 | pixels += (line_size - 8); |
157 | } |
158 | } |
159 | |
160 | static void add_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels, |
161 | ptrdiff_t line_size) |
162 | { |
163 | int i; |
164 | |
165 | /* read the pixels */ |
166 | for (i = 0; i < 8; i++) { |
167 | pixels[0] = av_clip_uint8(pixels[0] + block[0]); |
168 | pixels[1] = av_clip_uint8(pixels[1] + block[1]); |
169 | pixels[2] = av_clip_uint8(pixels[2] + block[2]); |
170 | pixels[3] = av_clip_uint8(pixels[3] + block[3]); |
171 | pixels[4] = av_clip_uint8(pixels[4] + block[4]); |
172 | pixels[5] = av_clip_uint8(pixels[5] + block[5]); |
173 | pixels[6] = av_clip_uint8(pixels[6] + block[6]); |
174 | pixels[7] = av_clip_uint8(pixels[7] + block[7]); |
175 | pixels += line_size; |
176 | block += 8; |
177 | } |
178 | } |
179 | |
180 | static void add_pixels_clamped4_c(const int16_t *block, uint8_t *av_restrict pixels, |
181 | int line_size) |
182 | { |
183 | int i; |
184 | |
185 | /* read the pixels */ |
186 | for(i=0;i<4;i++) { |
187 | pixels[0] = av_clip_uint8(pixels[0] + block[0]); |
188 | pixels[1] = av_clip_uint8(pixels[1] + block[1]); |
189 | pixels[2] = av_clip_uint8(pixels[2] + block[2]); |
190 | pixels[3] = av_clip_uint8(pixels[3] + block[3]); |
191 | pixels += line_size; |
192 | block += 8; |
193 | } |
194 | } |
195 | |
196 | static void add_pixels_clamped2_c(const int16_t *block, uint8_t *av_restrict pixels, |
197 | int line_size) |
198 | { |
199 | int i; |
200 | |
201 | /* read the pixels */ |
202 | for(i=0;i<2;i++) { |
203 | pixels[0] = av_clip_uint8(pixels[0] + block[0]); |
204 | pixels[1] = av_clip_uint8(pixels[1] + block[1]); |
205 | pixels += line_size; |
206 | block += 8; |
207 | } |
208 | } |
209 | |
210 | static void ff_jref_idct4_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
211 | { |
212 | ff_j_rev_dct4 (block); |
213 | put_pixels_clamped4_c(block, dest, line_size); |
214 | } |
215 | static void ff_jref_idct4_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
216 | { |
217 | ff_j_rev_dct4 (block); |
218 | add_pixels_clamped4_c(block, dest, line_size); |
219 | } |
220 | |
221 | static void ff_jref_idct2_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
222 | { |
223 | ff_j_rev_dct2 (block); |
224 | put_pixels_clamped2_c(block, dest, line_size); |
225 | } |
226 | static void ff_jref_idct2_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
227 | { |
228 | ff_j_rev_dct2 (block); |
229 | add_pixels_clamped2_c(block, dest, line_size); |
230 | } |
231 | |
232 | static void ff_jref_idct1_put(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
233 | { |
234 | dest[0] = av_clip_uint8((block[0] + 4)>>3); |
235 | } |
236 | static void ff_jref_idct1_add(uint8_t *dest, ptrdiff_t line_size, int16_t *block) |
237 | { |
238 | dest[0] = av_clip_uint8(dest[0] + ((block[0] + 4)>>3)); |
239 | } |
240 | |
241 | av_cold void ff_idctdsp_init(IDCTDSPContext *c, AVCodecContext *avctx) |
242 | { |
243 | const unsigned high_bit_depth = avctx->bits_per_raw_sample > 8; |
244 | |
245 | if (avctx->lowres==1) { |
246 | c->idct_put = ff_jref_idct4_put; |
247 | c->idct_add = ff_jref_idct4_add; |
248 | c->idct = ff_j_rev_dct4; |
249 | c->perm_type = FF_IDCT_PERM_NONE; |
250 | } else if (avctx->lowres==2) { |
251 | c->idct_put = ff_jref_idct2_put; |
252 | c->idct_add = ff_jref_idct2_add; |
253 | c->idct = ff_j_rev_dct2; |
254 | c->perm_type = FF_IDCT_PERM_NONE; |
255 | } else if (avctx->lowres==3) { |
256 | c->idct_put = ff_jref_idct1_put; |
257 | c->idct_add = ff_jref_idct1_add; |
258 | c->idct = ff_j_rev_dct1; |
259 | c->perm_type = FF_IDCT_PERM_NONE; |
260 | } else { |
261 | if (avctx->bits_per_raw_sample == 10 || avctx->bits_per_raw_sample == 9) { |
262 | c->idct_put = ff_simple_idct_put_10; |
263 | c->idct_add = ff_simple_idct_add_10; |
264 | c->idct = ff_simple_idct_10; |
265 | c->perm_type = FF_IDCT_PERM_NONE; |
266 | } else if (avctx->bits_per_raw_sample == 12) { |
267 | c->idct_put = ff_simple_idct_put_12; |
268 | c->idct_add = ff_simple_idct_add_12; |
269 | c->idct = ff_simple_idct_12; |
270 | c->perm_type = FF_IDCT_PERM_NONE; |
271 | } else { |
272 | if (avctx->idct_algo == FF_IDCT_INT) { |
273 | c->idct_put = ff_jref_idct_put; |
274 | c->idct_add = ff_jref_idct_add; |
275 | c->idct = ff_j_rev_dct; |
276 | c->perm_type = FF_IDCT_PERM_LIBMPEG2; |
277 | #if CONFIG_FAANIDCT |
278 | } else if (avctx->idct_algo == FF_IDCT_FAAN) { |
279 | c->idct_put = ff_faanidct_put; |
280 | c->idct_add = ff_faanidct_add; |
281 | c->idct = ff_faanidct; |
282 | c->perm_type = FF_IDCT_PERM_NONE; |
283 | #endif /* CONFIG_FAANIDCT */ |
284 | } else { // accurate/default |
285 | c->idct_put = ff_simple_idct_put_8; |
286 | c->idct_add = ff_simple_idct_add_8; |
287 | c->idct = ff_simple_idct_8; |
288 | c->perm_type = FF_IDCT_PERM_NONE; |
289 | } |
290 | } |
291 | } |
292 | |
293 | c->put_pixels_clamped = put_pixels_clamped_c; |
294 | c->put_signed_pixels_clamped = put_signed_pixels_clamped_c; |
295 | c->add_pixels_clamped = add_pixels_clamped_c; |
296 | |
297 | if (CONFIG_MPEG4_DECODER && avctx->idct_algo == FF_IDCT_XVID) |
298 | ff_xvid_idct_init(c, avctx); |
299 | |
300 | if (ARCH_AARCH64) |
301 | ff_idctdsp_init_aarch64(c, avctx, high_bit_depth); |
302 | if (ARCH_ALPHA) |
303 | ff_idctdsp_init_alpha(c, avctx, high_bit_depth); |
304 | if (ARCH_ARM) |
305 | ff_idctdsp_init_arm(c, avctx, high_bit_depth); |
306 | if (ARCH_PPC) |
307 | ff_idctdsp_init_ppc(c, avctx, high_bit_depth); |
308 | if (ARCH_X86) |
309 | ff_idctdsp_init_x86(c, avctx, high_bit_depth); |
310 | if (ARCH_MIPS) |
311 | ff_idctdsp_init_mips(c, avctx, high_bit_depth); |
312 | |
313 | ff_put_pixels_clamped = c->put_pixels_clamped; |
314 | ff_add_pixels_clamped = c->add_pixels_clamped; |
315 | |
316 | ff_init_scantable_permutation(c->idct_permutation, |
317 | c->perm_type); |
318 | } |
319 |