| 1 | /* |
| 2 | * Copyright (c) 2003 The FFmpeg Project |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | /* |
| 22 | * How to use this decoder: |
| 23 | * SVQ3 data is transported within Apple Quicktime files. Quicktime files |
| 24 | * have stsd atoms to describe media trak properties. A stsd atom for a |
| 25 | * video trak contains 1 or more ImageDescription atoms. These atoms begin |
| 26 | * with the 4-byte length of the atom followed by the codec fourcc. Some |
| 27 | * decoders need information in this atom to operate correctly. Such |
| 28 | * is the case with SVQ3. In order to get the best use out of this decoder, |
| 29 | * the calling app must make the SVQ3 ImageDescription atom available |
| 30 | * via the AVCodecContext's extradata[_size] field: |
| 31 | * |
| 32 | * AVCodecContext.extradata = pointer to ImageDescription, first characters |
| 33 | * are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length |
| 34 | * AVCodecContext.extradata_size = size of ImageDescription atom memory |
| 35 | * buffer (which will be the same as the ImageDescription atom size field |
| 36 | * from the QT file, minus 4 bytes since the length is missing) |
| 37 | * |
| 38 | * You will know you have these parameters passed correctly when the decoder |
| 39 | * correctly decodes this file: |
| 40 | * http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov |
| 41 | */ |
| 42 | |
| 43 | #include <inttypes.h> |
| 44 | |
| 45 | #include "libavutil/attributes.h" |
| 46 | #include "internal.h" |
| 47 | #include "avcodec.h" |
| 48 | #include "mpegutils.h" |
| 49 | #include "h264.h" |
| 50 | |
| 51 | #include "h264data.h" // FIXME FIXME FIXME |
| 52 | |
| 53 | #include "h264_mvpred.h" |
| 54 | #include "golomb.h" |
| 55 | #include "hpeldsp.h" |
| 56 | #include "rectangle.h" |
| 57 | #include "tpeldsp.h" |
| 58 | #include "vdpau_internal.h" |
| 59 | |
| 60 | #if CONFIG_ZLIB |
| 61 | #include <zlib.h> |
| 62 | #endif |
| 63 | |
| 64 | #include "svq1.h" |
| 65 | #include "svq3.h" |
| 66 | |
| 67 | /** |
| 68 | * @file |
| 69 | * svq3 decoder. |
| 70 | */ |
| 71 | |
| 72 | typedef struct { |
| 73 | H264Context h; |
| 74 | HpelDSPContext hdsp; |
| 75 | TpelDSPContext tdsp; |
| 76 | H264Picture *cur_pic; |
| 77 | H264Picture *next_pic; |
| 78 | H264Picture *last_pic; |
| 79 | int halfpel_flag; |
| 80 | int thirdpel_flag; |
| 81 | int unknown_flag; |
| 82 | int next_slice_index; |
| 83 | uint32_t watermark_key; |
| 84 | uint8_t *buf; |
| 85 | int buf_size; |
| 86 | int adaptive_quant; |
| 87 | int next_p_frame_damaged; |
| 88 | int h_edge_pos; |
| 89 | int v_edge_pos; |
| 90 | int last_frame_output; |
| 91 | } SVQ3Context; |
| 92 | |
| 93 | #define FULLPEL_MODE 1 |
| 94 | #define HALFPEL_MODE 2 |
| 95 | #define THIRDPEL_MODE 3 |
| 96 | #define PREDICT_MODE 4 |
| 97 | |
| 98 | /* dual scan (from some older h264 draft) |
| 99 | * o-->o-->o o |
| 100 | * | /| |
| 101 | * o o o / o |
| 102 | * | / | |/ | |
| 103 | * o o o o |
| 104 | * / |
| 105 | * o-->o-->o-->o |
| 106 | */ |
| 107 | static const uint8_t svq3_scan[16] = { |
| 108 | 0 + 0 * 4, 1 + 0 * 4, 2 + 0 * 4, 2 + 1 * 4, |
| 109 | 2 + 2 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, |
| 110 | 0 + 1 * 4, 0 + 2 * 4, 1 + 1 * 4, 1 + 2 * 4, |
| 111 | 0 + 3 * 4, 1 + 3 * 4, 2 + 3 * 4, 3 + 3 * 4, |
| 112 | }; |
| 113 | |
| 114 | static const uint8_t luma_dc_zigzag_scan[16] = { |
| 115 | 0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64, |
| 116 | 3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64, |
| 117 | 1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64, |
| 118 | 3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64, |
| 119 | }; |
| 120 | |
| 121 | static const uint8_t svq3_pred_0[25][2] = { |
| 122 | { 0, 0 }, |
| 123 | { 1, 0 }, { 0, 1 }, |
| 124 | { 0, 2 }, { 1, 1 }, { 2, 0 }, |
| 125 | { 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 }, |
| 126 | { 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 }, |
| 127 | { 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 }, |
| 128 | { 2, 4 }, { 3, 3 }, { 4, 2 }, |
| 129 | { 4, 3 }, { 3, 4 }, |
| 130 | { 4, 4 } |
| 131 | }; |
| 132 | |
| 133 | static const int8_t svq3_pred_1[6][6][5] = { |
| 134 | { { 2, -1, -1, -1, -1 }, { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, |
| 135 | { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, { 1, 2, -1, -1, -1 } }, |
| 136 | { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 }, |
| 137 | { 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } }, |
| 138 | { { 2, 0, -1, -1, -1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 }, |
| 139 | { 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } }, |
| 140 | { { 2, 0, -1, -1, -1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 }, |
| 141 | { 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } }, |
| 142 | { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 }, |
| 143 | { 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } }, |
| 144 | { { 0, 2, -1, -1, -1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 }, |
| 145 | { 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } }, |
| 146 | }; |
| 147 | |
| 148 | static const struct { |
| 149 | uint8_t run; |
| 150 | uint8_t level; |
| 151 | } svq3_dct_tables[2][16] = { |
| 152 | { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 }, |
| 153 | { 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } }, |
| 154 | { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 }, |
| 155 | { 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } } |
| 156 | }; |
| 157 | |
| 158 | static const uint32_t svq3_dequant_coeff[32] = { |
| 159 | 3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718, |
| 160 | 9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873, |
| 161 | 24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683, |
| 162 | 61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533 |
| 163 | }; |
| 164 | |
| 165 | static int svq3_decode_end(AVCodecContext *avctx); |
| 166 | |
| 167 | void ff_svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp) |
| 168 | { |
| 169 | const int qmul = svq3_dequant_coeff[qp]; |
| 170 | #define stride 16 |
| 171 | int i; |
| 172 | int temp[16]; |
| 173 | static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride }; |
| 174 | |
| 175 | for (i = 0; i < 4; i++) { |
| 176 | const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]); |
| 177 | const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]); |
| 178 | const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3]; |
| 179 | const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3]; |
| 180 | |
| 181 | temp[4 * i + 0] = z0 + z3; |
| 182 | temp[4 * i + 1] = z1 + z2; |
| 183 | temp[4 * i + 2] = z1 - z2; |
| 184 | temp[4 * i + 3] = z0 - z3; |
| 185 | } |
| 186 | |
| 187 | for (i = 0; i < 4; i++) { |
| 188 | const int offset = x_offset[i]; |
| 189 | const int z0 = 13 * (temp[4 * 0 + i] + temp[4 * 2 + i]); |
| 190 | const int z1 = 13 * (temp[4 * 0 + i] - temp[4 * 2 + i]); |
| 191 | const int z2 = 7 * temp[4 * 1 + i] - 17 * temp[4 * 3 + i]; |
| 192 | const int z3 = 17 * temp[4 * 1 + i] + 7 * temp[4 * 3 + i]; |
| 193 | |
| 194 | output[stride * 0 + offset] = (z0 + z3) * qmul + 0x80000 >> 20; |
| 195 | output[stride * 2 + offset] = (z1 + z2) * qmul + 0x80000 >> 20; |
| 196 | output[stride * 8 + offset] = (z1 - z2) * qmul + 0x80000 >> 20; |
| 197 | output[stride * 10 + offset] = (z0 - z3) * qmul + 0x80000 >> 20; |
| 198 | } |
| 199 | } |
| 200 | #undef stride |
| 201 | |
| 202 | void ff_svq3_add_idct_c(uint8_t *dst, int16_t *block, |
| 203 | int stride, int qp, int dc) |
| 204 | { |
| 205 | const int qmul = svq3_dequant_coeff[qp]; |
| 206 | int i; |
| 207 | |
| 208 | if (dc) { |
| 209 | dc = 13 * 13 * (dc == 1 ? 1538 * block[0] |
| 210 | : qmul * (block[0] >> 3) / 2); |
| 211 | block[0] = 0; |
| 212 | } |
| 213 | |
| 214 | for (i = 0; i < 4; i++) { |
| 215 | const int z0 = 13 * (block[0 + 4 * i] + block[2 + 4 * i]); |
| 216 | const int z1 = 13 * (block[0 + 4 * i] - block[2 + 4 * i]); |
| 217 | const int z2 = 7 * block[1 + 4 * i] - 17 * block[3 + 4 * i]; |
| 218 | const int z3 = 17 * block[1 + 4 * i] + 7 * block[3 + 4 * i]; |
| 219 | |
| 220 | block[0 + 4 * i] = z0 + z3; |
| 221 | block[1 + 4 * i] = z1 + z2; |
| 222 | block[2 + 4 * i] = z1 - z2; |
| 223 | block[3 + 4 * i] = z0 - z3; |
| 224 | } |
| 225 | |
| 226 | for (i = 0; i < 4; i++) { |
| 227 | const int z0 = 13 * (block[i + 4 * 0] + block[i + 4 * 2]); |
| 228 | const int z1 = 13 * (block[i + 4 * 0] - block[i + 4 * 2]); |
| 229 | const int z2 = 7 * block[i + 4 * 1] - 17 * block[i + 4 * 3]; |
| 230 | const int z3 = 17 * block[i + 4 * 1] + 7 * block[i + 4 * 3]; |
| 231 | const int rr = (dc + 0x80000); |
| 232 | |
| 233 | dst[i + stride * 0] = av_clip_uint8(dst[i + stride * 0] + ((z0 + z3) * qmul + rr >> 20)); |
| 234 | dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((z1 + z2) * qmul + rr >> 20)); |
| 235 | dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((z1 - z2) * qmul + rr >> 20)); |
| 236 | dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((z0 - z3) * qmul + rr >> 20)); |
| 237 | } |
| 238 | |
| 239 | memset(block, 0, 16 * sizeof(int16_t)); |
| 240 | } |
| 241 | |
| 242 | static inline int svq3_decode_block(GetBitContext *gb, int16_t *block, |
| 243 | int index, const int type) |
| 244 | { |
| 245 | static const uint8_t *const scan_patterns[4] = |
| 246 | { luma_dc_zigzag_scan, zigzag_scan, svq3_scan, chroma_dc_scan }; |
| 247 | |
| 248 | int run, level, sign, limit; |
| 249 | unsigned vlc; |
| 250 | const int intra = 3 * type >> 2; |
| 251 | const uint8_t *const scan = scan_patterns[type]; |
| 252 | |
| 253 | for (limit = (16 >> intra); index < 16; index = limit, limit += 8) { |
| 254 | for (; (vlc = svq3_get_ue_golomb(gb)) != 0; index++) { |
| 255 | if ((int32_t)vlc < 0) |
| 256 | return -1; |
| 257 | |
| 258 | sign = (vlc & 1) ? 0 : -1; |
| 259 | vlc = vlc + 1 >> 1; |
| 260 | |
| 261 | if (type == 3) { |
| 262 | if (vlc < 3) { |
| 263 | run = 0; |
| 264 | level = vlc; |
| 265 | } else if (vlc < 4) { |
| 266 | run = 1; |
| 267 | level = 1; |
| 268 | } else { |
| 269 | run = vlc & 0x3; |
| 270 | level = (vlc + 9 >> 2) - run; |
| 271 | } |
| 272 | } else { |
| 273 | if (vlc < 16U) { |
| 274 | run = svq3_dct_tables[intra][vlc].run; |
| 275 | level = svq3_dct_tables[intra][vlc].level; |
| 276 | } else if (intra) { |
| 277 | run = vlc & 0x7; |
| 278 | level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1))); |
| 279 | } else { |
| 280 | run = vlc & 0xF; |
| 281 | level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0))); |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | |
| 286 | if ((index += run) >= limit) |
| 287 | return -1; |
| 288 | |
| 289 | block[scan[index]] = (level ^ sign) - sign; |
| 290 | } |
| 291 | |
| 292 | if (type != 2) { |
| 293 | break; |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | return 0; |
| 298 | } |
| 299 | |
| 300 | static inline void svq3_mc_dir_part(SVQ3Context *s, |
| 301 | int x, int y, int width, int height, |
| 302 | int mx, int my, int dxy, |
| 303 | int thirdpel, int dir, int avg) |
| 304 | { |
| 305 | H264Context *h = &s->h; |
| 306 | const H264Picture *pic = (dir == 0) ? s->last_pic : s->next_pic; |
| 307 | uint8_t *src, *dest; |
| 308 | int i, emu = 0; |
| 309 | int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2 |
| 310 | |
| 311 | mx += x; |
| 312 | my += y; |
| 313 | |
| 314 | if (mx < 0 || mx >= s->h_edge_pos - width - 1 || |
| 315 | my < 0 || my >= s->v_edge_pos - height - 1) { |
| 316 | emu = 1; |
| 317 | mx = av_clip(mx, -16, s->h_edge_pos - width + 15); |
| 318 | my = av_clip(my, -16, s->v_edge_pos - height + 15); |
| 319 | } |
| 320 | |
| 321 | /* form component predictions */ |
| 322 | dest = h->cur_pic.f.data[0] + x + y * h->linesize; |
| 323 | src = pic->f.data[0] + mx + my * h->linesize; |
| 324 | |
| 325 | if (emu) { |
| 326 | h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src, |
| 327 | h->linesize, h->linesize, |
| 328 | width + 1, height + 1, |
| 329 | mx, my, s->h_edge_pos, s->v_edge_pos); |
| 330 | src = h->edge_emu_buffer; |
| 331 | } |
| 332 | if (thirdpel) |
| 333 | (avg ? s->tdsp.avg_tpel_pixels_tab |
| 334 | : s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, h->linesize, |
| 335 | width, height); |
| 336 | else |
| 337 | (avg ? s->hdsp.avg_pixels_tab |
| 338 | : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, h->linesize, |
| 339 | height); |
| 340 | |
| 341 | if (!(h->flags & CODEC_FLAG_GRAY)) { |
| 342 | mx = mx + (mx < (int) x) >> 1; |
| 343 | my = my + (my < (int) y) >> 1; |
| 344 | width = width >> 1; |
| 345 | height = height >> 1; |
| 346 | blocksize++; |
| 347 | |
| 348 | for (i = 1; i < 3; i++) { |
| 349 | dest = h->cur_pic.f.data[i] + (x >> 1) + (y >> 1) * h->uvlinesize; |
| 350 | src = pic->f.data[i] + mx + my * h->uvlinesize; |
| 351 | |
| 352 | if (emu) { |
| 353 | h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src, |
| 354 | h->uvlinesize, h->uvlinesize, |
| 355 | width + 1, height + 1, |
| 356 | mx, my, (s->h_edge_pos >> 1), |
| 357 | s->v_edge_pos >> 1); |
| 358 | src = h->edge_emu_buffer; |
| 359 | } |
| 360 | if (thirdpel) |
| 361 | (avg ? s->tdsp.avg_tpel_pixels_tab |
| 362 | : s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, |
| 363 | h->uvlinesize, |
| 364 | width, height); |
| 365 | else |
| 366 | (avg ? s->hdsp.avg_pixels_tab |
| 367 | : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, |
| 368 | h->uvlinesize, |
| 369 | height); |
| 370 | } |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode, |
| 375 | int dir, int avg) |
| 376 | { |
| 377 | int i, j, k, mx, my, dx, dy, x, y; |
| 378 | H264Context *h = &s->h; |
| 379 | const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1); |
| 380 | const int part_height = 16 >> ((unsigned)(size + 1) / 3); |
| 381 | const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0; |
| 382 | const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width; |
| 383 | const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width; |
| 384 | |
| 385 | for (i = 0; i < 16; i += part_height) |
| 386 | for (j = 0; j < 16; j += part_width) { |
| 387 | const int b_xy = (4 * h->mb_x + (j >> 2)) + |
| 388 | (4 * h->mb_y + (i >> 2)) * h->b_stride; |
| 389 | int dxy; |
| 390 | x = 16 * h->mb_x + j; |
| 391 | y = 16 * h->mb_y + i; |
| 392 | k = (j >> 2 & 1) + (i >> 1 & 2) + |
| 393 | (j >> 1 & 4) + (i & 8); |
| 394 | |
| 395 | if (mode != PREDICT_MODE) { |
| 396 | pred_motion(h, k, part_width >> 2, dir, 1, &mx, &my); |
| 397 | } else { |
| 398 | mx = s->next_pic->motion_val[0][b_xy][0] << 1; |
| 399 | my = s->next_pic->motion_val[0][b_xy][1] << 1; |
| 400 | |
| 401 | if (dir == 0) { |
| 402 | mx = mx * h->frame_num_offset / |
| 403 | h->prev_frame_num_offset + 1 >> 1; |
| 404 | my = my * h->frame_num_offset / |
| 405 | h->prev_frame_num_offset + 1 >> 1; |
| 406 | } else { |
| 407 | mx = mx * (h->frame_num_offset - h->prev_frame_num_offset) / |
| 408 | h->prev_frame_num_offset + 1 >> 1; |
| 409 | my = my * (h->frame_num_offset - h->prev_frame_num_offset) / |
| 410 | h->prev_frame_num_offset + 1 >> 1; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | /* clip motion vector prediction to frame border */ |
| 415 | mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x); |
| 416 | my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y); |
| 417 | |
| 418 | /* get (optional) motion vector differential */ |
| 419 | if (mode == PREDICT_MODE) { |
| 420 | dx = dy = 0; |
| 421 | } else { |
| 422 | dy = svq3_get_se_golomb(&h->gb); |
| 423 | dx = svq3_get_se_golomb(&h->gb); |
| 424 | |
| 425 | if (dx == INVALID_VLC || dy == INVALID_VLC) { |
| 426 | av_log(h->avctx, AV_LOG_ERROR, "invalid MV vlc\n"); |
| 427 | return -1; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | /* compute motion vector */ |
| 432 | if (mode == THIRDPEL_MODE) { |
| 433 | int fx, fy; |
| 434 | mx = (mx + 1 >> 1) + dx; |
| 435 | my = (my + 1 >> 1) + dy; |
| 436 | fx = (unsigned)(mx + 0x3000) / 3 - 0x1000; |
| 437 | fy = (unsigned)(my + 0x3000) / 3 - 0x1000; |
| 438 | dxy = (mx - 3 * fx) + 4 * (my - 3 * fy); |
| 439 | |
| 440 | svq3_mc_dir_part(s, x, y, part_width, part_height, |
| 441 | fx, fy, dxy, 1, dir, avg); |
| 442 | mx += mx; |
| 443 | my += my; |
| 444 | } else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) { |
| 445 | mx = (unsigned)(mx + 1 + 0x3000) / 3 + dx - 0x1000; |
| 446 | my = (unsigned)(my + 1 + 0x3000) / 3 + dy - 0x1000; |
| 447 | dxy = (mx & 1) + 2 * (my & 1); |
| 448 | |
| 449 | svq3_mc_dir_part(s, x, y, part_width, part_height, |
| 450 | mx >> 1, my >> 1, dxy, 0, dir, avg); |
| 451 | mx *= 3; |
| 452 | my *= 3; |
| 453 | } else { |
| 454 | mx = (unsigned)(mx + 3 + 0x6000) / 6 + dx - 0x1000; |
| 455 | my = (unsigned)(my + 3 + 0x6000) / 6 + dy - 0x1000; |
| 456 | |
| 457 | svq3_mc_dir_part(s, x, y, part_width, part_height, |
| 458 | mx, my, 0, 0, dir, avg); |
| 459 | mx *= 6; |
| 460 | my *= 6; |
| 461 | } |
| 462 | |
| 463 | /* update mv_cache */ |
| 464 | if (mode != PREDICT_MODE) { |
| 465 | int32_t mv = pack16to32(mx, my); |
| 466 | |
| 467 | if (part_height == 8 && i < 8) { |
| 468 | AV_WN32A(h->mv_cache[dir][scan8[k] + 1 * 8], mv); |
| 469 | |
| 470 | if (part_width == 8 && j < 8) |
| 471 | AV_WN32A(h->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv); |
| 472 | } |
| 473 | if (part_width == 8 && j < 8) |
| 474 | AV_WN32A(h->mv_cache[dir][scan8[k] + 1], mv); |
| 475 | if (part_width == 4 || part_height == 4) |
| 476 | AV_WN32A(h->mv_cache[dir][scan8[k]], mv); |
| 477 | } |
| 478 | |
| 479 | /* write back motion vectors */ |
| 480 | fill_rectangle(h->cur_pic.motion_val[dir][b_xy], |
| 481 | part_width >> 2, part_height >> 2, h->b_stride, |
| 482 | pack16to32(mx, my), 4); |
| 483 | } |
| 484 | |
| 485 | return 0; |
| 486 | } |
| 487 | |
| 488 | static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type) |
| 489 | { |
| 490 | H264Context *h = &s->h; |
| 491 | int i, j, k, m, dir, mode; |
| 492 | int cbp = 0; |
| 493 | uint32_t vlc; |
| 494 | int8_t *top, *left; |
| 495 | const int mb_xy = h->mb_xy; |
| 496 | const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride; |
| 497 | |
| 498 | h->top_samples_available = (h->mb_y == 0) ? 0x33FF : 0xFFFF; |
| 499 | h->left_samples_available = (h->mb_x == 0) ? 0x5F5F : 0xFFFF; |
| 500 | h->topright_samples_available = 0xFFFF; |
| 501 | |
| 502 | if (mb_type == 0) { /* SKIP */ |
| 503 | if (h->pict_type == AV_PICTURE_TYPE_P || |
| 504 | s->next_pic->mb_type[mb_xy] == -1) { |
| 505 | svq3_mc_dir_part(s, 16 * h->mb_x, 16 * h->mb_y, 16, 16, |
| 506 | 0, 0, 0, 0, 0, 0); |
| 507 | |
| 508 | if (h->pict_type == AV_PICTURE_TYPE_B) |
| 509 | svq3_mc_dir_part(s, 16 * h->mb_x, 16 * h->mb_y, 16, 16, |
| 510 | 0, 0, 0, 0, 1, 1); |
| 511 | |
| 512 | mb_type = MB_TYPE_SKIP; |
| 513 | } else { |
| 514 | mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6); |
| 515 | if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0) |
| 516 | return -1; |
| 517 | if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0) |
| 518 | return -1; |
| 519 | |
| 520 | mb_type = MB_TYPE_16x16; |
| 521 | } |
| 522 | } else if (mb_type < 8) { /* INTER */ |
| 523 | if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&h->gb)) |
| 524 | mode = THIRDPEL_MODE; |
| 525 | else if (s->halfpel_flag && |
| 526 | s->thirdpel_flag == !get_bits1(&h->gb)) |
| 527 | mode = HALFPEL_MODE; |
| 528 | else |
| 529 | mode = FULLPEL_MODE; |
| 530 | |
| 531 | /* fill caches */ |
| 532 | /* note ref_cache should contain here: |
| 533 | * ???????? |
| 534 | * ???11111 |
| 535 | * N??11111 |
| 536 | * N??11111 |
| 537 | * N??11111 |
| 538 | */ |
| 539 | |
| 540 | for (m = 0; m < 2; m++) { |
| 541 | if (h->mb_x > 0 && h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6] != -1) { |
| 542 | for (i = 0; i < 4; i++) |
| 543 | AV_COPY32(h->mv_cache[m][scan8[0] - 1 + i * 8], |
| 544 | h->cur_pic.motion_val[m][b_xy - 1 + i * h->b_stride]); |
| 545 | } else { |
| 546 | for (i = 0; i < 4; i++) |
| 547 | AV_ZERO32(h->mv_cache[m][scan8[0] - 1 + i * 8]); |
| 548 | } |
| 549 | if (h->mb_y > 0) { |
| 550 | memcpy(h->mv_cache[m][scan8[0] - 1 * 8], |
| 551 | h->cur_pic.motion_val[m][b_xy - h->b_stride], |
| 552 | 4 * 2 * sizeof(int16_t)); |
| 553 | memset(&h->ref_cache[m][scan8[0] - 1 * 8], |
| 554 | (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4); |
| 555 | |
| 556 | if (h->mb_x < h->mb_width - 1) { |
| 557 | AV_COPY32(h->mv_cache[m][scan8[0] + 4 - 1 * 8], |
| 558 | h->cur_pic.motion_val[m][b_xy - h->b_stride + 4]); |
| 559 | h->ref_cache[m][scan8[0] + 4 - 1 * 8] = |
| 560 | (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride + 1] + 6] == -1 || |
| 561 | h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1; |
| 562 | } else |
| 563 | h->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE; |
| 564 | if (h->mb_x > 0) { |
| 565 | AV_COPY32(h->mv_cache[m][scan8[0] - 1 - 1 * 8], |
| 566 | h->cur_pic.motion_val[m][b_xy - h->b_stride - 1]); |
| 567 | h->ref_cache[m][scan8[0] - 1 - 1 * 8] = |
| 568 | (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1; |
| 569 | } else |
| 570 | h->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE; |
| 571 | } else |
| 572 | memset(&h->ref_cache[m][scan8[0] - 1 * 8 - 1], |
| 573 | PART_NOT_AVAILABLE, 8); |
| 574 | |
| 575 | if (h->pict_type != AV_PICTURE_TYPE_B) |
| 576 | break; |
| 577 | } |
| 578 | |
| 579 | /* decode motion vector(s) and form prediction(s) */ |
| 580 | if (h->pict_type == AV_PICTURE_TYPE_P) { |
| 581 | if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0) |
| 582 | return -1; |
| 583 | } else { /* AV_PICTURE_TYPE_B */ |
| 584 | if (mb_type != 2) { |
| 585 | if (svq3_mc_dir(s, 0, mode, 0, 0) < 0) |
| 586 | return -1; |
| 587 | } else { |
| 588 | for (i = 0; i < 4; i++) |
| 589 | memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride], |
| 590 | 0, 4 * 2 * sizeof(int16_t)); |
| 591 | } |
| 592 | if (mb_type != 1) { |
| 593 | if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0) |
| 594 | return -1; |
| 595 | } else { |
| 596 | for (i = 0; i < 4; i++) |
| 597 | memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride], |
| 598 | 0, 4 * 2 * sizeof(int16_t)); |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | mb_type = MB_TYPE_16x16; |
| 603 | } else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */ |
| 604 | memset(h->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t)); |
| 605 | |
| 606 | if (mb_type == 8) { |
| 607 | if (h->mb_x > 0) { |
| 608 | for (i = 0; i < 4; i++) |
| 609 | h->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6 - i]; |
| 610 | if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) |
| 611 | h->left_samples_available = 0x5F5F; |
| 612 | } |
| 613 | if (h->mb_y > 0) { |
| 614 | h->intra4x4_pred_mode_cache[4 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 0]; |
| 615 | h->intra4x4_pred_mode_cache[5 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 1]; |
| 616 | h->intra4x4_pred_mode_cache[6 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 2]; |
| 617 | h->intra4x4_pred_mode_cache[7 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 3]; |
| 618 | |
| 619 | if (h->intra4x4_pred_mode_cache[4 + 8 * 0] == -1) |
| 620 | h->top_samples_available = 0x33FF; |
| 621 | } |
| 622 | |
| 623 | /* decode prediction codes for luma blocks */ |
| 624 | for (i = 0; i < 16; i += 2) { |
| 625 | vlc = svq3_get_ue_golomb(&h->gb); |
| 626 | |
| 627 | if (vlc >= 25U) { |
| 628 | av_log(h->avctx, AV_LOG_ERROR, |
| 629 | "luma prediction:%"PRIu32"\n", vlc); |
| 630 | return -1; |
| 631 | } |
| 632 | |
| 633 | left = &h->intra4x4_pred_mode_cache[scan8[i] - 1]; |
| 634 | top = &h->intra4x4_pred_mode_cache[scan8[i] - 8]; |
| 635 | |
| 636 | left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]]; |
| 637 | left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]]; |
| 638 | |
| 639 | if (left[1] == -1 || left[2] == -1) { |
| 640 | av_log(h->avctx, AV_LOG_ERROR, "weird prediction\n"); |
| 641 | return -1; |
| 642 | } |
| 643 | } |
| 644 | } else { /* mb_type == 33, DC_128_PRED block type */ |
| 645 | for (i = 0; i < 4; i++) |
| 646 | memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4); |
| 647 | } |
| 648 | |
| 649 | write_back_intra_pred_mode(h); |
| 650 | |
| 651 | if (mb_type == 8) { |
| 652 | ff_h264_check_intra4x4_pred_mode(h); |
| 653 | |
| 654 | h->top_samples_available = (h->mb_y == 0) ? 0x33FF : 0xFFFF; |
| 655 | h->left_samples_available = (h->mb_x == 0) ? 0x5F5F : 0xFFFF; |
| 656 | } else { |
| 657 | for (i = 0; i < 4; i++) |
| 658 | memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4); |
| 659 | |
| 660 | h->top_samples_available = 0x33FF; |
| 661 | h->left_samples_available = 0x5F5F; |
| 662 | } |
| 663 | |
| 664 | mb_type = MB_TYPE_INTRA4x4; |
| 665 | } else { /* INTRA16x16 */ |
| 666 | dir = i_mb_type_info[mb_type - 8].pred_mode; |
| 667 | dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1; |
| 668 | |
| 669 | if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir, 0)) < 0) { |
| 670 | av_log(h->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n"); |
| 671 | return h->intra16x16_pred_mode; |
| 672 | } |
| 673 | |
| 674 | cbp = i_mb_type_info[mb_type - 8].cbp; |
| 675 | mb_type = MB_TYPE_INTRA16x16; |
| 676 | } |
| 677 | |
| 678 | if (!IS_INTER(mb_type) && h->pict_type != AV_PICTURE_TYPE_I) { |
| 679 | for (i = 0; i < 4; i++) |
| 680 | memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride], |
| 681 | 0, 4 * 2 * sizeof(int16_t)); |
| 682 | if (h->pict_type == AV_PICTURE_TYPE_B) { |
| 683 | for (i = 0; i < 4; i++) |
| 684 | memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride], |
| 685 | 0, 4 * 2 * sizeof(int16_t)); |
| 686 | } |
| 687 | } |
| 688 | if (!IS_INTRA4x4(mb_type)) { |
| 689 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy], DC_PRED, 8); |
| 690 | } |
| 691 | if (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B) { |
| 692 | memset(h->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t)); |
| 693 | } |
| 694 | |
| 695 | if (!IS_INTRA16x16(mb_type) && |
| 696 | (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B)) { |
| 697 | if ((vlc = svq3_get_ue_golomb(&h->gb)) >= 48U){ |
| 698 | av_log(h->avctx, AV_LOG_ERROR, "cbp_vlc=%"PRIu32"\n", vlc); |
| 699 | return -1; |
| 700 | } |
| 701 | |
| 702 | cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc] |
| 703 | : golomb_to_inter_cbp[vlc]; |
| 704 | } |
| 705 | if (IS_INTRA16x16(mb_type) || |
| 706 | (h->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) { |
| 707 | h->qscale += svq3_get_se_golomb(&h->gb); |
| 708 | |
| 709 | if (h->qscale > 31u) { |
| 710 | av_log(h->avctx, AV_LOG_ERROR, "qscale:%d\n", h->qscale); |
| 711 | return -1; |
| 712 | } |
| 713 | } |
| 714 | if (IS_INTRA16x16(mb_type)) { |
| 715 | AV_ZERO128(h->mb_luma_dc[0] + 0); |
| 716 | AV_ZERO128(h->mb_luma_dc[0] + 8); |
| 717 | if (svq3_decode_block(&h->gb, h->mb_luma_dc[0], 0, 1)) { |
| 718 | av_log(h->avctx, AV_LOG_ERROR, |
| 719 | "error while decoding intra luma dc\n"); |
| 720 | return -1; |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | if (cbp) { |
| 725 | const int index = IS_INTRA16x16(mb_type) ? 1 : 0; |
| 726 | const int type = ((h->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1); |
| 727 | |
| 728 | for (i = 0; i < 4; i++) |
| 729 | if ((cbp & (1 << i))) { |
| 730 | for (j = 0; j < 4; j++) { |
| 731 | k = index ? (1 * (j & 1) + 2 * (i & 1) + |
| 732 | 2 * (j & 2) + 4 * (i & 2)) |
| 733 | : (4 * i + j); |
| 734 | h->non_zero_count_cache[scan8[k]] = 1; |
| 735 | |
| 736 | if (svq3_decode_block(&h->gb, &h->mb[16 * k], index, type)) { |
| 737 | av_log(h->avctx, AV_LOG_ERROR, |
| 738 | "error while decoding block\n"); |
| 739 | return -1; |
| 740 | } |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | if ((cbp & 0x30)) { |
| 745 | for (i = 1; i < 3; ++i) |
| 746 | if (svq3_decode_block(&h->gb, &h->mb[16 * 16 * i], 0, 3)) { |
| 747 | av_log(h->avctx, AV_LOG_ERROR, |
| 748 | "error while decoding chroma dc block\n"); |
| 749 | return -1; |
| 750 | } |
| 751 | |
| 752 | if ((cbp & 0x20)) { |
| 753 | for (i = 1; i < 3; i++) { |
| 754 | for (j = 0; j < 4; j++) { |
| 755 | k = 16 * i + j; |
| 756 | h->non_zero_count_cache[scan8[k]] = 1; |
| 757 | |
| 758 | if (svq3_decode_block(&h->gb, &h->mb[16 * k], 1, 1)) { |
| 759 | av_log(h->avctx, AV_LOG_ERROR, |
| 760 | "error while decoding chroma ac block\n"); |
| 761 | return -1; |
| 762 | } |
| 763 | } |
| 764 | } |
| 765 | } |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | h->cbp = cbp; |
| 770 | h->cur_pic.mb_type[mb_xy] = mb_type; |
| 771 | |
| 772 | if (IS_INTRA(mb_type)) |
| 773 | h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8, 1); |
| 774 | |
| 775 | return 0; |
| 776 | } |
| 777 | |
| 778 | static int svq3_decode_slice_header(AVCodecContext *avctx) |
| 779 | { |
| 780 | SVQ3Context *s = avctx->priv_data; |
| 781 | H264Context *h = &s->h; |
| 782 | const int mb_xy = h->mb_xy; |
| 783 | int i, header; |
| 784 | unsigned slice_id; |
| 785 | |
| 786 | header = get_bits(&h->gb, 8); |
| 787 | |
| 788 | if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) { |
| 789 | /* TODO: what? */ |
| 790 | av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header); |
| 791 | return -1; |
| 792 | } else { |
| 793 | int length = header >> 5 & 3; |
| 794 | |
| 795 | s->next_slice_index = get_bits_count(&h->gb) + |
| 796 | 8 * show_bits(&h->gb, 8 * length) + |
| 797 | 8 * length; |
| 798 | |
| 799 | if (s->next_slice_index > h->gb.size_in_bits) { |
| 800 | av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n"); |
| 801 | return -1; |
| 802 | } |
| 803 | |
| 804 | h->gb.size_in_bits = s->next_slice_index - 8 * (length - 1); |
| 805 | skip_bits(&h->gb, 8); |
| 806 | |
| 807 | if (s->watermark_key) { |
| 808 | uint32_t header = AV_RL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1]); |
| 809 | AV_WL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1], |
| 810 | header ^ s->watermark_key); |
| 811 | } |
| 812 | if (length > 0) { |
| 813 | memmove((uint8_t *) &h->gb.buffer[get_bits_count(&h->gb) >> 3], |
| 814 | &h->gb.buffer[h->gb.size_in_bits >> 3], length - 1); |
| 815 | } |
| 816 | skip_bits_long(&h->gb, 0); |
| 817 | } |
| 818 | |
| 819 | if ((slice_id = svq3_get_ue_golomb(&h->gb)) >= 3) { |
| 820 | av_log(h->avctx, AV_LOG_ERROR, "illegal slice type %u \n", slice_id); |
| 821 | return -1; |
| 822 | } |
| 823 | |
| 824 | h->slice_type = golomb_to_pict_type[slice_id]; |
| 825 | |
| 826 | if ((header & 0x9F) == 2) { |
| 827 | i = (h->mb_num < 64) ? 6 : (1 + av_log2(h->mb_num - 1)); |
| 828 | h->mb_skip_run = get_bits(&h->gb, i) - |
| 829 | (h->mb_y * h->mb_width + h->mb_x); |
| 830 | } else { |
| 831 | skip_bits1(&h->gb); |
| 832 | h->mb_skip_run = 0; |
| 833 | } |
| 834 | |
| 835 | h->slice_num = get_bits(&h->gb, 8); |
| 836 | h->qscale = get_bits(&h->gb, 5); |
| 837 | s->adaptive_quant = get_bits1(&h->gb); |
| 838 | |
| 839 | /* unknown fields */ |
| 840 | skip_bits1(&h->gb); |
| 841 | |
| 842 | if (s->unknown_flag) |
| 843 | skip_bits1(&h->gb); |
| 844 | |
| 845 | skip_bits1(&h->gb); |
| 846 | skip_bits(&h->gb, 2); |
| 847 | |
| 848 | if (skip_1stop_8data_bits(&h->gb) < 0) |
| 849 | return AVERROR_INVALIDDATA; |
| 850 | |
| 851 | /* reset intra predictors and invalidate motion vector references */ |
| 852 | if (h->mb_x > 0) { |
| 853 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - 1] + 3, |
| 854 | -1, 4 * sizeof(int8_t)); |
| 855 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_x], |
| 856 | -1, 8 * sizeof(int8_t) * h->mb_x); |
| 857 | } |
| 858 | if (h->mb_y > 0) { |
| 859 | memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_stride], |
| 860 | -1, 8 * sizeof(int8_t) * (h->mb_width - h->mb_x)); |
| 861 | |
| 862 | if (h->mb_x > 0) |
| 863 | h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] = -1; |
| 864 | } |
| 865 | |
| 866 | return 0; |
| 867 | } |
| 868 | |
| 869 | static av_cold int svq3_decode_init(AVCodecContext *avctx) |
| 870 | { |
| 871 | SVQ3Context *s = avctx->priv_data; |
| 872 | H264Context *h = &s->h; |
| 873 | int m; |
| 874 | unsigned char *extradata; |
| 875 | unsigned char *extradata_end; |
| 876 | unsigned int size; |
| 877 | int marker_found = 0; |
| 878 | int ret; |
| 879 | |
| 880 | s->cur_pic = av_mallocz(sizeof(*s->cur_pic)); |
| 881 | s->last_pic = av_mallocz(sizeof(*s->last_pic)); |
| 882 | s->next_pic = av_mallocz(sizeof(*s->next_pic)); |
| 883 | if (!s->next_pic || !s->last_pic || !s->cur_pic) { |
| 884 | ret = AVERROR(ENOMEM); |
| 885 | goto fail; |
| 886 | } |
| 887 | |
| 888 | if ((ret = ff_h264_decode_init(avctx)) < 0) |
| 889 | goto fail; |
| 890 | |
| 891 | ff_hpeldsp_init(&s->hdsp, avctx->flags); |
| 892 | ff_tpeldsp_init(&s->tdsp); |
| 893 | |
| 894 | h->flags = avctx->flags; |
| 895 | h->is_complex = 1; |
| 896 | h->sps.chroma_format_idc = 1; |
| 897 | h->picture_structure = PICT_FRAME; |
| 898 | avctx->pix_fmt = AV_PIX_FMT_YUVJ420P; |
| 899 | avctx->color_range = AVCOL_RANGE_JPEG; |
| 900 | |
| 901 | h->chroma_qp[0] = h->chroma_qp[1] = 4; |
| 902 | h->chroma_x_shift = h->chroma_y_shift = 1; |
| 903 | |
| 904 | s->halfpel_flag = 1; |
| 905 | s->thirdpel_flag = 1; |
| 906 | s->unknown_flag = 0; |
| 907 | |
| 908 | /* prowl for the "SEQH" marker in the extradata */ |
| 909 | extradata = (unsigned char *)avctx->extradata; |
| 910 | extradata_end = avctx->extradata + avctx->extradata_size; |
| 911 | if (extradata) { |
| 912 | for (m = 0; m + 8 < avctx->extradata_size; m++) { |
| 913 | if (!memcmp(extradata, "SEQH", 4)) { |
| 914 | marker_found = 1; |
| 915 | break; |
| 916 | } |
| 917 | extradata++; |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | /* if a match was found, parse the extra data */ |
| 922 | if (marker_found) { |
| 923 | GetBitContext gb; |
| 924 | int frame_size_code; |
| 925 | |
| 926 | size = AV_RB32(&extradata[4]); |
| 927 | if (size > extradata_end - extradata - 8) { |
| 928 | ret = AVERROR_INVALIDDATA; |
| 929 | goto fail; |
| 930 | } |
| 931 | init_get_bits(&gb, extradata + 8, size * 8); |
| 932 | |
| 933 | /* 'frame size code' and optional 'width, height' */ |
| 934 | frame_size_code = get_bits(&gb, 3); |
| 935 | switch (frame_size_code) { |
| 936 | case 0: |
| 937 | avctx->width = 160; |
| 938 | avctx->height = 120; |
| 939 | break; |
| 940 | case 1: |
| 941 | avctx->width = 128; |
| 942 | avctx->height = 96; |
| 943 | break; |
| 944 | case 2: |
| 945 | avctx->width = 176; |
| 946 | avctx->height = 144; |
| 947 | break; |
| 948 | case 3: |
| 949 | avctx->width = 352; |
| 950 | avctx->height = 288; |
| 951 | break; |
| 952 | case 4: |
| 953 | avctx->width = 704; |
| 954 | avctx->height = 576; |
| 955 | break; |
| 956 | case 5: |
| 957 | avctx->width = 240; |
| 958 | avctx->height = 180; |
| 959 | break; |
| 960 | case 6: |
| 961 | avctx->width = 320; |
| 962 | avctx->height = 240; |
| 963 | break; |
| 964 | case 7: |
| 965 | avctx->width = get_bits(&gb, 12); |
| 966 | avctx->height = get_bits(&gb, 12); |
| 967 | break; |
| 968 | } |
| 969 | |
| 970 | s->halfpel_flag = get_bits1(&gb); |
| 971 | s->thirdpel_flag = get_bits1(&gb); |
| 972 | |
| 973 | /* unknown fields */ |
| 974 | skip_bits1(&gb); |
| 975 | skip_bits1(&gb); |
| 976 | skip_bits1(&gb); |
| 977 | skip_bits1(&gb); |
| 978 | |
| 979 | h->low_delay = get_bits1(&gb); |
| 980 | |
| 981 | /* unknown field */ |
| 982 | skip_bits1(&gb); |
| 983 | |
| 984 | if (skip_1stop_8data_bits(&gb) < 0) { |
| 985 | ret = AVERROR_INVALIDDATA; |
| 986 | goto fail; |
| 987 | } |
| 988 | |
| 989 | s->unknown_flag = get_bits1(&gb); |
| 990 | avctx->has_b_frames = !h->low_delay; |
| 991 | if (s->unknown_flag) { |
| 992 | #if CONFIG_ZLIB |
| 993 | unsigned watermark_width = svq3_get_ue_golomb(&gb); |
| 994 | unsigned watermark_height = svq3_get_ue_golomb(&gb); |
| 995 | int u1 = svq3_get_ue_golomb(&gb); |
| 996 | int u2 = get_bits(&gb, 8); |
| 997 | int u3 = get_bits(&gb, 2); |
| 998 | int u4 = svq3_get_ue_golomb(&gb); |
| 999 | unsigned long buf_len = watermark_width * |
| 1000 | watermark_height * 4; |
| 1001 | int offset = get_bits_count(&gb) + 7 >> 3; |
| 1002 | uint8_t *buf; |
| 1003 | |
| 1004 | if (watermark_height <= 0 || |
| 1005 | (uint64_t)watermark_width * 4 > UINT_MAX / watermark_height) { |
| 1006 | ret = -1; |
| 1007 | goto fail; |
| 1008 | } |
| 1009 | |
| 1010 | buf = av_malloc(buf_len); |
| 1011 | av_log(avctx, AV_LOG_DEBUG, "watermark size: %ux%u\n", |
| 1012 | watermark_width, watermark_height); |
| 1013 | av_log(avctx, AV_LOG_DEBUG, |
| 1014 | "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n", |
| 1015 | u1, u2, u3, u4, offset); |
| 1016 | if (uncompress(buf, &buf_len, extradata + 8 + offset, |
| 1017 | size - offset) != Z_OK) { |
| 1018 | av_log(avctx, AV_LOG_ERROR, |
| 1019 | "could not uncompress watermark logo\n"); |
| 1020 | av_free(buf); |
| 1021 | ret = -1; |
| 1022 | goto fail; |
| 1023 | } |
| 1024 | s->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0); |
| 1025 | s->watermark_key = s->watermark_key << 16 | s->watermark_key; |
| 1026 | av_log(avctx, AV_LOG_DEBUG, |
| 1027 | "watermark key %#"PRIx32"\n", s->watermark_key); |
| 1028 | av_free(buf); |
| 1029 | #else |
| 1030 | av_log(avctx, AV_LOG_ERROR, |
| 1031 | "this svq3 file contains watermark which need zlib support compiled in\n"); |
| 1032 | ret = -1; |
| 1033 | goto fail; |
| 1034 | #endif |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | h->width = avctx->width; |
| 1039 | h->height = avctx->height; |
| 1040 | h->mb_width = (h->width + 15) / 16; |
| 1041 | h->mb_height = (h->height + 15) / 16; |
| 1042 | h->mb_stride = h->mb_width + 1; |
| 1043 | h->mb_num = h->mb_width * h->mb_height; |
| 1044 | h->b_stride = 4 * h->mb_width; |
| 1045 | s->h_edge_pos = h->mb_width * 16; |
| 1046 | s->v_edge_pos = h->mb_height * 16; |
| 1047 | |
| 1048 | if ((ret = ff_h264_alloc_tables(h)) < 0) { |
| 1049 | av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n"); |
| 1050 | goto fail; |
| 1051 | } |
| 1052 | |
| 1053 | return 0; |
| 1054 | fail: |
| 1055 | svq3_decode_end(avctx); |
| 1056 | return ret; |
| 1057 | } |
| 1058 | |
| 1059 | static void free_picture(AVCodecContext *avctx, H264Picture *pic) |
| 1060 | { |
| 1061 | int i; |
| 1062 | for (i = 0; i < 2; i++) { |
| 1063 | av_buffer_unref(&pic->motion_val_buf[i]); |
| 1064 | av_buffer_unref(&pic->ref_index_buf[i]); |
| 1065 | } |
| 1066 | av_buffer_unref(&pic->mb_type_buf); |
| 1067 | |
| 1068 | av_frame_unref(&pic->f); |
| 1069 | } |
| 1070 | |
| 1071 | static int get_buffer(AVCodecContext *avctx, H264Picture *pic) |
| 1072 | { |
| 1073 | SVQ3Context *s = avctx->priv_data; |
| 1074 | H264Context *h = &s->h; |
| 1075 | const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1; |
| 1076 | const int mb_array_size = h->mb_stride * h->mb_height; |
| 1077 | const int b4_stride = h->mb_width * 4 + 1; |
| 1078 | const int b4_array_size = b4_stride * h->mb_height * 4; |
| 1079 | int ret; |
| 1080 | |
| 1081 | if (!pic->motion_val_buf[0]) { |
| 1082 | int i; |
| 1083 | |
| 1084 | pic->mb_type_buf = av_buffer_allocz((big_mb_num + h->mb_stride) * sizeof(uint32_t)); |
| 1085 | if (!pic->mb_type_buf) |
| 1086 | return AVERROR(ENOMEM); |
| 1087 | pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1; |
| 1088 | |
| 1089 | for (i = 0; i < 2; i++) { |
| 1090 | pic->motion_val_buf[i] = av_buffer_allocz(2 * (b4_array_size + 4) * sizeof(int16_t)); |
| 1091 | pic->ref_index_buf[i] = av_buffer_allocz(4 * mb_array_size); |
| 1092 | if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) { |
| 1093 | ret = AVERROR(ENOMEM); |
| 1094 | goto fail; |
| 1095 | } |
| 1096 | |
| 1097 | pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4; |
| 1098 | pic->ref_index[i] = pic->ref_index_buf[i]->data; |
| 1099 | } |
| 1100 | } |
| 1101 | pic->reference = !(h->pict_type == AV_PICTURE_TYPE_B); |
| 1102 | |
| 1103 | ret = ff_get_buffer(avctx, &pic->f, |
| 1104 | pic->reference ? AV_GET_BUFFER_FLAG_REF : 0); |
| 1105 | if (ret < 0) |
| 1106 | goto fail; |
| 1107 | |
| 1108 | if (!h->edge_emu_buffer) { |
| 1109 | h->edge_emu_buffer = av_mallocz(pic->f.linesize[0] * 17); |
| 1110 | if (!h->edge_emu_buffer) |
| 1111 | return AVERROR(ENOMEM); |
| 1112 | } |
| 1113 | |
| 1114 | h->linesize = pic->f.linesize[0]; |
| 1115 | h->uvlinesize = pic->f.linesize[1]; |
| 1116 | |
| 1117 | return 0; |
| 1118 | fail: |
| 1119 | free_picture(avctx, pic); |
| 1120 | return ret; |
| 1121 | } |
| 1122 | |
| 1123 | static int svq3_decode_frame(AVCodecContext *avctx, void *data, |
| 1124 | int *got_frame, AVPacket *avpkt) |
| 1125 | { |
| 1126 | SVQ3Context *s = avctx->priv_data; |
| 1127 | H264Context *h = &s->h; |
| 1128 | int buf_size = avpkt->size; |
| 1129 | int left; |
| 1130 | uint8_t *buf; |
| 1131 | int ret, m, i; |
| 1132 | |
| 1133 | /* special case for last picture */ |
| 1134 | if (buf_size == 0) { |
| 1135 | if (s->next_pic->f.data[0] && !h->low_delay && !s->last_frame_output) { |
| 1136 | ret = av_frame_ref(data, &s->next_pic->f); |
| 1137 | if (ret < 0) |
| 1138 | return ret; |
| 1139 | s->last_frame_output = 1; |
| 1140 | *got_frame = 1; |
| 1141 | } |
| 1142 | return 0; |
| 1143 | } |
| 1144 | |
| 1145 | h->mb_x = h->mb_y = h->mb_xy = 0; |
| 1146 | |
| 1147 | if (s->watermark_key) { |
| 1148 | av_fast_padded_malloc(&s->buf, &s->buf_size, buf_size); |
| 1149 | if (!s->buf) |
| 1150 | return AVERROR(ENOMEM); |
| 1151 | memcpy(s->buf, avpkt->data, buf_size); |
| 1152 | buf = s->buf; |
| 1153 | } else { |
| 1154 | buf = avpkt->data; |
| 1155 | } |
| 1156 | |
| 1157 | init_get_bits(&h->gb, buf, 8 * buf_size); |
| 1158 | |
| 1159 | if (svq3_decode_slice_header(avctx)) |
| 1160 | return -1; |
| 1161 | |
| 1162 | h->pict_type = h->slice_type; |
| 1163 | |
| 1164 | if (h->pict_type != AV_PICTURE_TYPE_B) |
| 1165 | FFSWAP(H264Picture*, s->next_pic, s->last_pic); |
| 1166 | |
| 1167 | av_frame_unref(&s->cur_pic->f); |
| 1168 | |
| 1169 | /* for skipping the frame */ |
| 1170 | s->cur_pic->f.pict_type = h->pict_type; |
| 1171 | s->cur_pic->f.key_frame = (h->pict_type == AV_PICTURE_TYPE_I); |
| 1172 | |
| 1173 | ret = get_buffer(avctx, s->cur_pic); |
| 1174 | if (ret < 0) |
| 1175 | return ret; |
| 1176 | |
| 1177 | h->cur_pic_ptr = s->cur_pic; |
| 1178 | av_frame_unref(&h->cur_pic.f); |
| 1179 | memcpy(&h->cur_pic.tf, &s->cur_pic->tf, sizeof(h->cur_pic) - offsetof(H264Picture, tf)); |
| 1180 | ret = av_frame_ref(&h->cur_pic.f, &s->cur_pic->f); |
| 1181 | if (ret < 0) |
| 1182 | return ret; |
| 1183 | |
| 1184 | for (i = 0; i < 16; i++) { |
| 1185 | h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * h->linesize * ((scan8[i] - scan8[0]) >> 3); |
| 1186 | h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * h->linesize * ((scan8[i] - scan8[0]) >> 3); |
| 1187 | } |
| 1188 | for (i = 0; i < 16; i++) { |
| 1189 | h->block_offset[16 + i] = |
| 1190 | h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3); |
| 1191 | h->block_offset[48 + 16 + i] = |
| 1192 | h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3); |
| 1193 | } |
| 1194 | |
| 1195 | if (h->pict_type != AV_PICTURE_TYPE_I) { |
| 1196 | if (!s->last_pic->f.data[0]) { |
| 1197 | av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
| 1198 | av_frame_unref(&s->last_pic->f); |
| 1199 | ret = get_buffer(avctx, s->last_pic); |
| 1200 | if (ret < 0) |
| 1201 | return ret; |
| 1202 | memset(s->last_pic->f.data[0], 0, avctx->height * s->last_pic->f.linesize[0]); |
| 1203 | memset(s->last_pic->f.data[1], 0x80, (avctx->height / 2) * |
| 1204 | s->last_pic->f.linesize[1]); |
| 1205 | memset(s->last_pic->f.data[2], 0x80, (avctx->height / 2) * |
| 1206 | s->last_pic->f.linesize[2]); |
| 1207 | } |
| 1208 | |
| 1209 | if (h->pict_type == AV_PICTURE_TYPE_B && !s->next_pic->f.data[0]) { |
| 1210 | av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n"); |
| 1211 | av_frame_unref(&s->next_pic->f); |
| 1212 | ret = get_buffer(avctx, s->next_pic); |
| 1213 | if (ret < 0) |
| 1214 | return ret; |
| 1215 | memset(s->next_pic->f.data[0], 0, avctx->height * s->next_pic->f.linesize[0]); |
| 1216 | memset(s->next_pic->f.data[1], 0x80, (avctx->height / 2) * |
| 1217 | s->next_pic->f.linesize[1]); |
| 1218 | memset(s->next_pic->f.data[2], 0x80, (avctx->height / 2) * |
| 1219 | s->next_pic->f.linesize[2]); |
| 1220 | } |
| 1221 | } |
| 1222 | |
| 1223 | if (avctx->debug & FF_DEBUG_PICT_INFO) |
| 1224 | av_log(h->avctx, AV_LOG_DEBUG, |
| 1225 | "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n", |
| 1226 | av_get_picture_type_char(h->pict_type), |
| 1227 | s->halfpel_flag, s->thirdpel_flag, |
| 1228 | s->adaptive_quant, h->qscale, h->slice_num); |
| 1229 | |
| 1230 | if (avctx->skip_frame >= AVDISCARD_NONREF && h->pict_type == AV_PICTURE_TYPE_B || |
| 1231 | avctx->skip_frame >= AVDISCARD_NONKEY && h->pict_type != AV_PICTURE_TYPE_I || |
| 1232 | avctx->skip_frame >= AVDISCARD_ALL) |
| 1233 | return 0; |
| 1234 | |
| 1235 | if (s->next_p_frame_damaged) { |
| 1236 | if (h->pict_type == AV_PICTURE_TYPE_B) |
| 1237 | return 0; |
| 1238 | else |
| 1239 | s->next_p_frame_damaged = 0; |
| 1240 | } |
| 1241 | |
| 1242 | if (h->pict_type == AV_PICTURE_TYPE_B) { |
| 1243 | h->frame_num_offset = h->slice_num - h->prev_frame_num; |
| 1244 | |
| 1245 | if (h->frame_num_offset < 0) |
| 1246 | h->frame_num_offset += 256; |
| 1247 | if (h->frame_num_offset == 0 || |
| 1248 | h->frame_num_offset >= h->prev_frame_num_offset) { |
| 1249 | av_log(h->avctx, AV_LOG_ERROR, "error in B-frame picture id\n"); |
| 1250 | return -1; |
| 1251 | } |
| 1252 | } else { |
| 1253 | h->prev_frame_num = h->frame_num; |
| 1254 | h->frame_num = h->slice_num; |
| 1255 | h->prev_frame_num_offset = h->frame_num - h->prev_frame_num; |
| 1256 | |
| 1257 | if (h->prev_frame_num_offset < 0) |
| 1258 | h->prev_frame_num_offset += 256; |
| 1259 | } |
| 1260 | |
| 1261 | for (m = 0; m < 2; m++) { |
| 1262 | int i; |
| 1263 | for (i = 0; i < 4; i++) { |
| 1264 | int j; |
| 1265 | for (j = -1; j < 4; j++) |
| 1266 | h->ref_cache[m][scan8[0] + 8 * i + j] = 1; |
| 1267 | if (i < 3) |
| 1268 | h->ref_cache[m][scan8[0] + 8 * i + j] = PART_NOT_AVAILABLE; |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | for (h->mb_y = 0; h->mb_y < h->mb_height; h->mb_y++) { |
| 1273 | for (h->mb_x = 0; h->mb_x < h->mb_width; h->mb_x++) { |
| 1274 | unsigned mb_type; |
| 1275 | h->mb_xy = h->mb_x + h->mb_y * h->mb_stride; |
| 1276 | |
| 1277 | if ((get_bits_count(&h->gb) + 7) >= h->gb.size_in_bits && |
| 1278 | ((get_bits_count(&h->gb) & 7) == 0 || |
| 1279 | show_bits(&h->gb, -get_bits_count(&h->gb) & 7) == 0)) { |
| 1280 | skip_bits(&h->gb, s->next_slice_index - get_bits_count(&h->gb)); |
| 1281 | h->gb.size_in_bits = 8 * buf_size; |
| 1282 | |
| 1283 | if (svq3_decode_slice_header(avctx)) |
| 1284 | return -1; |
| 1285 | |
| 1286 | /* TODO: support s->mb_skip_run */ |
| 1287 | } |
| 1288 | |
| 1289 | mb_type = svq3_get_ue_golomb(&h->gb); |
| 1290 | |
| 1291 | if (h->pict_type == AV_PICTURE_TYPE_I) |
| 1292 | mb_type += 8; |
| 1293 | else if (h->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) |
| 1294 | mb_type += 4; |
| 1295 | if (mb_type > 33 || svq3_decode_mb(s, mb_type)) { |
| 1296 | av_log(h->avctx, AV_LOG_ERROR, |
| 1297 | "error while decoding MB %d %d\n", h->mb_x, h->mb_y); |
| 1298 | return -1; |
| 1299 | } |
| 1300 | |
| 1301 | if (mb_type != 0 || h->cbp) |
| 1302 | ff_h264_hl_decode_mb(h); |
| 1303 | |
| 1304 | if (h->pict_type != AV_PICTURE_TYPE_B && !h->low_delay) |
| 1305 | h->cur_pic.mb_type[h->mb_x + h->mb_y * h->mb_stride] = |
| 1306 | (h->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1; |
| 1307 | } |
| 1308 | |
| 1309 | ff_draw_horiz_band(avctx, &s->cur_pic->f, |
| 1310 | s->last_pic->f.data[0] ? &s->last_pic->f : NULL, |
| 1311 | 16 * h->mb_y, 16, h->picture_structure, 0, |
| 1312 | h->low_delay); |
| 1313 | } |
| 1314 | |
| 1315 | left = buf_size*8 - get_bits_count(&h->gb); |
| 1316 | |
| 1317 | if (h->mb_y != h->mb_height || h->mb_x != h->mb_width) { |
| 1318 | av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, h->mb_y, h->mb_x, left); |
| 1319 | //av_hex_dump(stderr, buf+buf_size-8, 8); |
| 1320 | } |
| 1321 | |
| 1322 | if (left < 0) { |
| 1323 | av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left); |
| 1324 | return -1; |
| 1325 | } |
| 1326 | |
| 1327 | if (h->pict_type == AV_PICTURE_TYPE_B || h->low_delay) |
| 1328 | ret = av_frame_ref(data, &s->cur_pic->f); |
| 1329 | else if (s->last_pic->f.data[0]) |
| 1330 | ret = av_frame_ref(data, &s->last_pic->f); |
| 1331 | if (ret < 0) |
| 1332 | return ret; |
| 1333 | |
| 1334 | /* Do not output the last pic after seeking. */ |
| 1335 | if (s->last_pic->f.data[0] || h->low_delay) |
| 1336 | *got_frame = 1; |
| 1337 | |
| 1338 | if (h->pict_type != AV_PICTURE_TYPE_B) { |
| 1339 | FFSWAP(H264Picture*, s->cur_pic, s->next_pic); |
| 1340 | } else { |
| 1341 | av_frame_unref(&s->cur_pic->f); |
| 1342 | } |
| 1343 | |
| 1344 | return buf_size; |
| 1345 | } |
| 1346 | |
| 1347 | static av_cold int svq3_decode_end(AVCodecContext *avctx) |
| 1348 | { |
| 1349 | SVQ3Context *s = avctx->priv_data; |
| 1350 | H264Context *h = &s->h; |
| 1351 | |
| 1352 | free_picture(avctx, s->cur_pic); |
| 1353 | free_picture(avctx, s->next_pic); |
| 1354 | free_picture(avctx, s->last_pic); |
| 1355 | av_freep(&s->cur_pic); |
| 1356 | av_freep(&s->next_pic); |
| 1357 | av_freep(&s->last_pic); |
| 1358 | |
| 1359 | av_frame_unref(&h->cur_pic.f); |
| 1360 | |
| 1361 | ff_h264_free_context(h); |
| 1362 | |
| 1363 | av_freep(&s->buf); |
| 1364 | s->buf_size = 0; |
| 1365 | av_freep(&h->edge_emu_buffer); |
| 1366 | |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
| 1370 | AVCodec ff_svq3_decoder = { |
| 1371 | .name = "svq3", |
| 1372 | .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"), |
| 1373 | .type = AVMEDIA_TYPE_VIDEO, |
| 1374 | .id = AV_CODEC_ID_SVQ3, |
| 1375 | .priv_data_size = sizeof(SVQ3Context), |
| 1376 | .init = svq3_decode_init, |
| 1377 | .close = svq3_decode_end, |
| 1378 | .decode = svq3_decode_frame, |
| 1379 | .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | |
| 1380 | CODEC_CAP_DR1 | |
| 1381 | CODEC_CAP_DELAY, |
| 1382 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, |
| 1383 | AV_PIX_FMT_NONE}, |
| 1384 | }; |