Commit | Line | Data |
---|---|---|
2ba45a60 DM |
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 | ||
f6fa7814 DM |
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); | |
2ba45a60 DM |
85 | |
86 | static void put_pixels_clamped_c(const int16_t *block, uint8_t *av_restrict pixels, | |
f6fa7814 | 87 | ptrdiff_t line_size) |
2ba45a60 DM |
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, | |
f6fa7814 | 141 | ptrdiff_t line_size) |
2ba45a60 DM |
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, | |
f6fa7814 | 161 | ptrdiff_t line_size) |
2ba45a60 DM |
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, int 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, int 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, int 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, int 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, int 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, int 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) { | |
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_ALPHA) | |
301 | ff_idctdsp_init_alpha(c, avctx, high_bit_depth); | |
302 | if (ARCH_ARM) | |
303 | ff_idctdsp_init_arm(c, avctx, high_bit_depth); | |
304 | if (ARCH_PPC) | |
305 | ff_idctdsp_init_ppc(c, avctx, high_bit_depth); | |
306 | if (ARCH_X86) | |
307 | ff_idctdsp_init_x86(c, avctx, high_bit_depth); | |
308 | ||
309 | ff_put_pixels_clamped = c->put_pixels_clamped; | |
310 | ff_add_pixels_clamped = c->add_pixels_clamped; | |
311 | ||
312 | ff_init_scantable_permutation(c->idct_permutation, | |
313 | c->perm_type); | |
314 | } |