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2ba45a60 DM |
1 | /* |
2 | * MJPEG decoder | |
3 | * Copyright (c) 2000, 2001 Fabrice Bellard | |
4 | * Copyright (c) 2003 Alex Beregszaszi | |
5 | * Copyright (c) 2003-2004 Michael Niedermayer | |
6 | * | |
7 | * Support for external huffman table, various fixes (AVID workaround), | |
8 | * aspecting, new decode_frame mechanism and apple mjpeg-b support | |
9 | * by Alex Beregszaszi | |
10 | * | |
11 | * This file is part of FFmpeg. | |
12 | * | |
13 | * FFmpeg is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU Lesser General Public | |
15 | * License as published by the Free Software Foundation; either | |
16 | * version 2.1 of the License, or (at your option) any later version. | |
17 | * | |
18 | * FFmpeg is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
21 | * Lesser General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU Lesser General Public | |
24 | * License along with FFmpeg; if not, write to the Free Software | |
25 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
26 | */ | |
27 | ||
28 | /** | |
29 | * @file | |
30 | * MJPEG decoder. | |
31 | */ | |
32 | ||
33 | #include "libavutil/imgutils.h" | |
34 | #include "libavutil/avassert.h" | |
35 | #include "libavutil/opt.h" | |
36 | #include "avcodec.h" | |
37 | #include "blockdsp.h" | |
38 | #include "copy_block.h" | |
39 | #include "idctdsp.h" | |
40 | #include "internal.h" | |
41 | #include "mjpeg.h" | |
42 | #include "mjpegdec.h" | |
43 | #include "jpeglsdec.h" | |
44 | #include "tiff.h" | |
45 | #include "exif.h" | |
46 | #include "bytestream.h" | |
47 | ||
48 | ||
49 | static int build_vlc(VLC *vlc, const uint8_t *bits_table, | |
50 | const uint8_t *val_table, int nb_codes, | |
51 | int use_static, int is_ac) | |
52 | { | |
53 | uint8_t huff_size[256] = { 0 }; | |
54 | uint16_t huff_code[256]; | |
55 | uint16_t huff_sym[256]; | |
56 | int i; | |
57 | ||
58 | av_assert0(nb_codes <= 256); | |
59 | ||
60 | ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table); | |
61 | ||
62 | for (i = 0; i < 256; i++) | |
63 | huff_sym[i] = i + 16 * is_ac; | |
64 | ||
65 | if (is_ac) | |
66 | huff_sym[0] = 16 * 256; | |
67 | ||
68 | return ff_init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1, | |
69 | huff_code, 2, 2, huff_sym, 2, 2, use_static); | |
70 | } | |
71 | ||
72 | static void build_basic_mjpeg_vlc(MJpegDecodeContext *s) | |
73 | { | |
74 | build_vlc(&s->vlcs[0][0], avpriv_mjpeg_bits_dc_luminance, | |
75 | avpriv_mjpeg_val_dc, 12, 0, 0); | |
76 | build_vlc(&s->vlcs[0][1], avpriv_mjpeg_bits_dc_chrominance, | |
77 | avpriv_mjpeg_val_dc, 12, 0, 0); | |
78 | build_vlc(&s->vlcs[1][0], avpriv_mjpeg_bits_ac_luminance, | |
79 | avpriv_mjpeg_val_ac_luminance, 251, 0, 1); | |
80 | build_vlc(&s->vlcs[1][1], avpriv_mjpeg_bits_ac_chrominance, | |
81 | avpriv_mjpeg_val_ac_chrominance, 251, 0, 1); | |
82 | build_vlc(&s->vlcs[2][0], avpriv_mjpeg_bits_ac_luminance, | |
83 | avpriv_mjpeg_val_ac_luminance, 251, 0, 0); | |
84 | build_vlc(&s->vlcs[2][1], avpriv_mjpeg_bits_ac_chrominance, | |
85 | avpriv_mjpeg_val_ac_chrominance, 251, 0, 0); | |
86 | } | |
87 | ||
88 | static void parse_avid(MJpegDecodeContext *s, uint8_t *buf, int len) | |
89 | { | |
90 | s->buggy_avid = 1; | |
91 | if (len > 14 && buf[12] == 1) /* 1 - NTSC */ | |
92 | s->interlace_polarity = 1; | |
93 | if (len > 14 && buf[12] == 2) /* 2 - PAL */ | |
94 | s->interlace_polarity = 0; | |
95 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
96 | av_log(s->avctx, AV_LOG_INFO, "AVID: len:%d %d\n", len, len > 14 ? buf[12] : -1); | |
97 | } | |
98 | ||
99 | av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx) | |
100 | { | |
101 | MJpegDecodeContext *s = avctx->priv_data; | |
102 | ||
103 | if (!s->picture_ptr) { | |
104 | s->picture = av_frame_alloc(); | |
105 | if (!s->picture) | |
106 | return AVERROR(ENOMEM); | |
107 | s->picture_ptr = s->picture; | |
108 | } | |
109 | ||
110 | s->avctx = avctx; | |
111 | ff_blockdsp_init(&s->bdsp, avctx); | |
112 | ff_hpeldsp_init(&s->hdsp, avctx->flags); | |
113 | ff_idctdsp_init(&s->idsp, avctx); | |
114 | ff_init_scantable(s->idsp.idct_permutation, &s->scantable, | |
115 | ff_zigzag_direct); | |
116 | s->buffer_size = 0; | |
117 | s->buffer = NULL; | |
118 | s->start_code = -1; | |
119 | s->first_picture = 1; | |
120 | s->got_picture = 0; | |
121 | s->org_height = avctx->coded_height; | |
122 | avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; | |
123 | avctx->colorspace = AVCOL_SPC_BT470BG; | |
124 | ||
125 | build_basic_mjpeg_vlc(s); | |
126 | ||
127 | if (s->extern_huff) { | |
128 | av_log(avctx, AV_LOG_INFO, "using external huffman table\n"); | |
129 | init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8); | |
130 | if (ff_mjpeg_decode_dht(s)) { | |
131 | av_log(avctx, AV_LOG_ERROR, | |
132 | "error using external huffman table, switching back to internal\n"); | |
133 | build_basic_mjpeg_vlc(s); | |
134 | } | |
135 | } | |
136 | if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */ | |
137 | s->interlace_polarity = 1; /* bottom field first */ | |
138 | av_log(avctx, AV_LOG_DEBUG, "bottom field first\n"); | |
139 | } else if (avctx->field_order == AV_FIELD_UNKNOWN) { | |
140 | if (avctx->codec_tag == AV_RL32("MJPG")) | |
141 | s->interlace_polarity = 1; | |
142 | } | |
143 | ||
144 | if ( avctx->extradata_size > 8 | |
145 | && AV_RL32(avctx->extradata) == 0x2C | |
146 | && AV_RL32(avctx->extradata+4) == 0x18) { | |
147 | parse_avid(s, avctx->extradata, avctx->extradata_size); | |
148 | } | |
149 | ||
150 | if (avctx->codec->id == AV_CODEC_ID_AMV) | |
151 | s->flipped = 1; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | ||
157 | /* quantize tables */ | |
158 | int ff_mjpeg_decode_dqt(MJpegDecodeContext *s) | |
159 | { | |
160 | int len, index, i, j; | |
161 | ||
162 | len = get_bits(&s->gb, 16) - 2; | |
163 | ||
164 | while (len >= 65) { | |
165 | int pr = get_bits(&s->gb, 4); | |
166 | if (pr > 1) { | |
167 | av_log(s->avctx, AV_LOG_ERROR, "dqt: invalid precision\n"); | |
168 | return AVERROR_INVALIDDATA; | |
169 | } | |
170 | index = get_bits(&s->gb, 4); | |
171 | if (index >= 4) | |
172 | return -1; | |
173 | av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index); | |
174 | /* read quant table */ | |
175 | for (i = 0; i < 64; i++) { | |
176 | j = s->scantable.permutated[i]; | |
177 | s->quant_matrixes[index][j] = get_bits(&s->gb, pr ? 16 : 8); | |
178 | } | |
179 | ||
180 | // XXX FIXME finetune, and perhaps add dc too | |
181 | s->qscale[index] = FFMAX(s->quant_matrixes[index][s->scantable.permutated[1]], | |
182 | s->quant_matrixes[index][s->scantable.permutated[8]]) >> 1; | |
183 | av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n", | |
184 | index, s->qscale[index]); | |
185 | len -= 65; | |
186 | } | |
187 | return 0; | |
188 | } | |
189 | ||
190 | /* decode huffman tables and build VLC decoders */ | |
191 | int ff_mjpeg_decode_dht(MJpegDecodeContext *s) | |
192 | { | |
193 | int len, index, i, class, n, v, code_max; | |
194 | uint8_t bits_table[17]; | |
195 | uint8_t val_table[256]; | |
196 | int ret = 0; | |
197 | ||
198 | len = get_bits(&s->gb, 16) - 2; | |
199 | ||
200 | while (len > 0) { | |
201 | if (len < 17) | |
202 | return AVERROR_INVALIDDATA; | |
203 | class = get_bits(&s->gb, 4); | |
204 | if (class >= 2) | |
205 | return AVERROR_INVALIDDATA; | |
206 | index = get_bits(&s->gb, 4); | |
207 | if (index >= 4) | |
208 | return AVERROR_INVALIDDATA; | |
209 | n = 0; | |
210 | for (i = 1; i <= 16; i++) { | |
211 | bits_table[i] = get_bits(&s->gb, 8); | |
212 | n += bits_table[i]; | |
213 | } | |
214 | len -= 17; | |
215 | if (len < n || n > 256) | |
216 | return AVERROR_INVALIDDATA; | |
217 | ||
218 | code_max = 0; | |
219 | for (i = 0; i < n; i++) { | |
220 | v = get_bits(&s->gb, 8); | |
221 | if (v > code_max) | |
222 | code_max = v; | |
223 | val_table[i] = v; | |
224 | } | |
225 | len -= n; | |
226 | ||
227 | /* build VLC and flush previous vlc if present */ | |
228 | ff_free_vlc(&s->vlcs[class][index]); | |
229 | av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n", | |
230 | class, index, code_max + 1); | |
231 | if ((ret = build_vlc(&s->vlcs[class][index], bits_table, val_table, | |
232 | code_max + 1, 0, class > 0)) < 0) | |
233 | return ret; | |
234 | ||
235 | if (class > 0) { | |
236 | ff_free_vlc(&s->vlcs[2][index]); | |
237 | if ((ret = build_vlc(&s->vlcs[2][index], bits_table, val_table, | |
238 | code_max + 1, 0, 0)) < 0) | |
239 | return ret; | |
240 | } | |
241 | } | |
242 | return 0; | |
243 | } | |
244 | ||
245 | int ff_mjpeg_decode_sof(MJpegDecodeContext *s) | |
246 | { | |
f6fa7814 DM |
247 | int len, nb_components, i, width, height, bits, ret; |
248 | unsigned pix_fmt_id; | |
2ba45a60 DM |
249 | int h_count[MAX_COMPONENTS]; |
250 | int v_count[MAX_COMPONENTS]; | |
251 | ||
252 | s->cur_scan = 0; | |
253 | s->upscale_h = s->upscale_v = 0; | |
254 | ||
255 | /* XXX: verify len field validity */ | |
256 | len = get_bits(&s->gb, 16); | |
257 | s->avctx->bits_per_raw_sample = | |
258 | bits = get_bits(&s->gb, 8); | |
259 | ||
f6fa7814 DM |
260 | if (bits > 16 || bits < 1) { |
261 | av_log(s->avctx, AV_LOG_ERROR, "bits %d is invalid\n", bits); | |
262 | return AVERROR_INVALIDDATA; | |
263 | } | |
264 | ||
2ba45a60 DM |
265 | if (s->pegasus_rct) |
266 | bits = 9; | |
267 | if (bits == 9 && !s->pegasus_rct) | |
268 | s->rct = 1; // FIXME ugly | |
269 | ||
270 | if(s->lossless && s->avctx->lowres){ | |
271 | av_log(s->avctx, AV_LOG_ERROR, "lowres is not possible with lossless jpeg\n"); | |
272 | return -1; | |
273 | } | |
274 | ||
275 | height = get_bits(&s->gb, 16); | |
276 | width = get_bits(&s->gb, 16); | |
277 | ||
278 | if (s->avctx->codec_id == AV_CODEC_ID_AMV && (height&15)) | |
279 | avpriv_request_sample(s->avctx, "non mod 16 height AMV\n"); | |
280 | ||
281 | // HACK for odd_height.mov | |
282 | if (s->interlaced && s->width == width && s->height == height + 1) | |
283 | height= s->height; | |
284 | ||
285 | av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height); | |
286 | if (av_image_check_size(width, height, 0, s->avctx)) | |
287 | return AVERROR_INVALIDDATA; | |
288 | ||
289 | nb_components = get_bits(&s->gb, 8); | |
290 | if (nb_components <= 0 || | |
291 | nb_components > MAX_COMPONENTS) | |
292 | return -1; | |
293 | if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) { | |
294 | if (nb_components != s->nb_components) { | |
295 | av_log(s->avctx, AV_LOG_ERROR, | |
296 | "nb_components changing in interlaced picture\n"); | |
297 | return AVERROR_INVALIDDATA; | |
298 | } | |
299 | } | |
300 | if (s->ls && !(bits <= 8 || nb_components == 1)) { | |
301 | avpriv_report_missing_feature(s->avctx, | |
302 | "JPEG-LS that is not <= 8 " | |
303 | "bits/component or 16-bit gray"); | |
304 | return AVERROR_PATCHWELCOME; | |
305 | } | |
306 | s->nb_components = nb_components; | |
307 | s->h_max = 1; | |
308 | s->v_max = 1; | |
309 | memset(h_count, 0, sizeof(h_count)); | |
310 | memset(v_count, 0, sizeof(v_count)); | |
311 | for (i = 0; i < nb_components; i++) { | |
312 | /* component id */ | |
313 | s->component_id[i] = get_bits(&s->gb, 8) - 1; | |
314 | h_count[i] = get_bits(&s->gb, 4); | |
315 | v_count[i] = get_bits(&s->gb, 4); | |
316 | /* compute hmax and vmax (only used in interleaved case) */ | |
317 | if (h_count[i] > s->h_max) | |
318 | s->h_max = h_count[i]; | |
319 | if (v_count[i] > s->v_max) | |
320 | s->v_max = v_count[i]; | |
321 | s->quant_index[i] = get_bits(&s->gb, 8); | |
322 | if (s->quant_index[i] >= 4) { | |
323 | av_log(s->avctx, AV_LOG_ERROR, "quant_index is invalid\n"); | |
324 | return AVERROR_INVALIDDATA; | |
325 | } | |
326 | if (!h_count[i] || !v_count[i]) { | |
327 | av_log(s->avctx, AV_LOG_ERROR, | |
328 | "Invalid sampling factor in component %d %d:%d\n", | |
329 | i, h_count[i], v_count[i]); | |
330 | return AVERROR_INVALIDDATA; | |
331 | } | |
332 | ||
333 | av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n", | |
334 | i, h_count[i], v_count[i], | |
335 | s->component_id[i], s->quant_index[i]); | |
336 | } | |
337 | ||
338 | if (s->ls && (s->h_max > 1 || s->v_max > 1)) { | |
339 | avpriv_report_missing_feature(s->avctx, "Subsampling in JPEG-LS"); | |
340 | return AVERROR_PATCHWELCOME; | |
341 | } | |
342 | ||
343 | ||
344 | /* if different size, realloc/alloc picture */ | |
345 | if ( width != s->width || height != s->height | |
346 | || bits != s->bits | |
347 | || memcmp(s->h_count, h_count, sizeof(h_count)) | |
348 | || memcmp(s->v_count, v_count, sizeof(v_count))) { | |
349 | ||
350 | s->width = width; | |
351 | s->height = height; | |
352 | s->bits = bits; | |
353 | memcpy(s->h_count, h_count, sizeof(h_count)); | |
354 | memcpy(s->v_count, v_count, sizeof(v_count)); | |
355 | s->interlaced = 0; | |
356 | s->got_picture = 0; | |
357 | ||
358 | /* test interlaced mode */ | |
359 | if (s->first_picture && | |
360 | s->org_height != 0 && | |
361 | s->height < ((s->org_height * 3) / 4)) { | |
362 | s->interlaced = 1; | |
363 | s->bottom_field = s->interlace_polarity; | |
364 | s->picture_ptr->interlaced_frame = 1; | |
365 | s->picture_ptr->top_field_first = !s->interlace_polarity; | |
366 | height *= 2; | |
367 | } | |
368 | ||
369 | ret = ff_set_dimensions(s->avctx, width, height); | |
370 | if (ret < 0) | |
371 | return ret; | |
372 | ||
373 | s->first_picture = 0; | |
374 | } | |
375 | ||
376 | if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) { | |
377 | if (s->progressive) { | |
378 | avpriv_request_sample(s->avctx, "progressively coded interlaced picture"); | |
379 | return AVERROR_INVALIDDATA; | |
380 | } | |
381 | } else{ | |
382 | if (s->v_max == 1 && s->h_max == 1 && s->lossless==1 && (nb_components==3 || nb_components==4)) | |
383 | s->rgb = 1; | |
384 | else if (!s->lossless) | |
385 | s->rgb = 0; | |
386 | /* XXX: not complete test ! */ | |
f6fa7814 | 387 | pix_fmt_id = ((unsigned)s->h_count[0] << 28) | (s->v_count[0] << 24) | |
2ba45a60 DM |
388 | (s->h_count[1] << 20) | (s->v_count[1] << 16) | |
389 | (s->h_count[2] << 12) | (s->v_count[2] << 8) | | |
390 | (s->h_count[3] << 4) | s->v_count[3]; | |
391 | av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id); | |
392 | /* NOTE we do not allocate pictures large enough for the possible | |
393 | * padding of h/v_count being 4 */ | |
394 | if (!(pix_fmt_id & 0xD0D0D0D0)) | |
395 | pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1; | |
396 | if (!(pix_fmt_id & 0x0D0D0D0D)) | |
397 | pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1; | |
398 | ||
399 | for (i = 0; i < 8; i++) { | |
400 | int j = 6 + (i&1) - (i&6); | |
401 | int is = (pix_fmt_id >> (4*i)) & 0xF; | |
402 | int js = (pix_fmt_id >> (4*j)) & 0xF; | |
403 | ||
404 | if (is == 1 && js != 2 && (i < 2 || i > 5)) | |
405 | js = (pix_fmt_id >> ( 8 + 4*(i&1))) & 0xF; | |
406 | if (is == 1 && js != 2 && (i < 2 || i > 5)) | |
407 | js = (pix_fmt_id >> (16 + 4*(i&1))) & 0xF; | |
408 | ||
409 | if (is == 1 && js == 2) { | |
410 | if (i & 1) s->upscale_h |= 1 << (j/2); | |
411 | else s->upscale_v |= 1 << (j/2); | |
412 | } | |
413 | } | |
414 | ||
415 | switch (pix_fmt_id) { | |
416 | case 0x11111100: | |
417 | if (s->rgb) | |
418 | s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_BGR48; | |
419 | else { | |
420 | if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') { | |
421 | s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_GBRP : AV_PIX_FMT_GBRP16; | |
422 | } else { | |
423 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P; | |
424 | else s->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; | |
425 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
426 | } | |
427 | } | |
428 | av_assert0(s->nb_components == 3); | |
429 | break; | |
430 | case 0x11111111: | |
431 | if (s->rgb) | |
432 | s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_ABGR : AV_PIX_FMT_RGBA64; | |
433 | else { | |
434 | if (s->adobe_transform == 0 && s->bits <= 8) { | |
435 | s->avctx->pix_fmt = AV_PIX_FMT_GBRAP; | |
436 | } else { | |
437 | s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_YUVA444P : AV_PIX_FMT_YUVA444P16; | |
438 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
439 | } | |
440 | } | |
441 | av_assert0(s->nb_components == 4); | |
442 | break; | |
443 | case 0x22111122: | |
f6fa7814 | 444 | case 0x22111111: |
2ba45a60 DM |
445 | if (s->adobe_transform == 0 && s->bits <= 8) { |
446 | s->avctx->pix_fmt = AV_PIX_FMT_GBRAP; | |
f6fa7814 DM |
447 | s->upscale_v |= 6; |
448 | s->upscale_h |= 6; | |
2ba45a60 DM |
449 | } else if (s->adobe_transform == 2 && s->bits <= 8) { |
450 | s->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; | |
f6fa7814 DM |
451 | s->upscale_v |= 6; |
452 | s->upscale_h |= 6; | |
2ba45a60 DM |
453 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; |
454 | } else { | |
455 | if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; | |
456 | else s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; | |
457 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
458 | } | |
459 | av_assert0(s->nb_components == 4); | |
460 | break; | |
461 | case 0x12121100: | |
462 | case 0x22122100: | |
463 | case 0x21211100: | |
464 | case 0x22211200: | |
465 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P; | |
466 | else | |
467 | goto unk_pixfmt; | |
468 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
2ba45a60 DM |
469 | break; |
470 | case 0x22221100: | |
471 | case 0x22112200: | |
472 | case 0x11222200: | |
473 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P; | |
474 | else | |
475 | goto unk_pixfmt; | |
476 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
2ba45a60 DM |
477 | break; |
478 | case 0x11000000: | |
479 | case 0x13000000: | |
480 | case 0x14000000: | |
481 | case 0x31000000: | |
482 | case 0x33000000: | |
483 | case 0x34000000: | |
484 | case 0x41000000: | |
485 | case 0x43000000: | |
486 | case 0x44000000: | |
487 | if(s->bits <= 8) | |
488 | s->avctx->pix_fmt = AV_PIX_FMT_GRAY8; | |
489 | else | |
490 | s->avctx->pix_fmt = AV_PIX_FMT_GRAY16; | |
491 | break; | |
492 | case 0x12111100: | |
493 | case 0x14121200: | |
f6fa7814 | 494 | case 0x14111100: |
2ba45a60 DM |
495 | case 0x22211100: |
496 | case 0x22112100: | |
f6fa7814 DM |
497 | if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') { |
498 | if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP; | |
499 | else | |
500 | goto unk_pixfmt; | |
501 | s->upscale_v |= 3; | |
502 | } else { | |
503 | if (pix_fmt_id == 0x14111100) | |
504 | s->upscale_v |= 6; | |
505 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P; | |
506 | else | |
507 | goto unk_pixfmt; | |
508 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
509 | } | |
2ba45a60 DM |
510 | break; |
511 | case 0x21111100: | |
f6fa7814 DM |
512 | if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') { |
513 | if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP; | |
514 | else | |
515 | goto unk_pixfmt; | |
516 | s->upscale_h |= 3; | |
517 | } else { | |
518 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P; | |
519 | else s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; | |
520 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
521 | } | |
2ba45a60 DM |
522 | break; |
523 | case 0x22121100: | |
524 | case 0x22111200: | |
525 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P; | |
526 | else | |
527 | goto unk_pixfmt; | |
528 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
529 | break; | |
530 | case 0x22111100: | |
531 | case 0x42111100: | |
f6fa7814 | 532 | case 0x24111100: |
2ba45a60 DM |
533 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV420P : AV_PIX_FMT_YUVJ420P; |
534 | else s->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; | |
535 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
536 | if (pix_fmt_id == 0x42111100) { | |
f6fa7814 DM |
537 | if (s->bits > 8) |
538 | goto unk_pixfmt; | |
2ba45a60 | 539 | s->upscale_h = 6; |
f6fa7814 DM |
540 | } else if (pix_fmt_id == 0x24111100) { |
541 | if (s->bits > 8) | |
542 | goto unk_pixfmt; | |
543 | s->upscale_v = 6; | |
2ba45a60 DM |
544 | } |
545 | break; | |
546 | case 0x41111100: | |
547 | if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV411P : AV_PIX_FMT_YUVJ411P; | |
548 | else | |
549 | goto unk_pixfmt; | |
550 | s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG; | |
551 | break; | |
552 | default: | |
553 | unk_pixfmt: | |
f6fa7814 | 554 | av_log(s->avctx, AV_LOG_ERROR, "Unhandled pixel format 0x%x bits:%d\n", pix_fmt_id, s->bits); |
2ba45a60 DM |
555 | s->upscale_h = s->upscale_v = 0; |
556 | return AVERROR_PATCHWELCOME; | |
557 | } | |
558 | if ((s->upscale_h || s->upscale_v) && s->avctx->lowres) { | |
559 | av_log(s->avctx, AV_LOG_ERROR, "lowres not supported for weird subsampling\n"); | |
560 | return AVERROR_PATCHWELCOME; | |
561 | } | |
562 | if (s->ls) { | |
563 | s->upscale_h = s->upscale_v = 0; | |
564 | if (s->nb_components > 1) | |
565 | s->avctx->pix_fmt = AV_PIX_FMT_RGB24; | |
566 | else if (s->palette_index && s->bits <= 8) | |
567 | s->avctx->pix_fmt = AV_PIX_FMT_PAL8; | |
568 | else if (s->bits <= 8) | |
569 | s->avctx->pix_fmt = AV_PIX_FMT_GRAY8; | |
570 | else | |
571 | s->avctx->pix_fmt = AV_PIX_FMT_GRAY16; | |
572 | } | |
573 | ||
574 | s->pix_desc = av_pix_fmt_desc_get(s->avctx->pix_fmt); | |
575 | if (!s->pix_desc) { | |
576 | av_log(s->avctx, AV_LOG_ERROR, "Could not get a pixel format descriptor.\n"); | |
577 | return AVERROR_BUG; | |
578 | } | |
579 | ||
580 | av_frame_unref(s->picture_ptr); | |
581 | if (ff_get_buffer(s->avctx, s->picture_ptr, AV_GET_BUFFER_FLAG_REF) < 0) | |
582 | return -1; | |
583 | s->picture_ptr->pict_type = AV_PICTURE_TYPE_I; | |
584 | s->picture_ptr->key_frame = 1; | |
585 | s->got_picture = 1; | |
586 | ||
587 | for (i = 0; i < 4; i++) | |
588 | s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced; | |
589 | ||
590 | av_dlog(s->avctx, "%d %d %d %d %d %d\n", | |
591 | s->width, s->height, s->linesize[0], s->linesize[1], | |
592 | s->interlaced, s->avctx->height); | |
593 | ||
594 | if (len != (8 + (3 * nb_components))) | |
595 | av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len); | |
596 | } | |
597 | ||
598 | if (s->rgb && !s->lossless && !s->ls) { | |
599 | av_log(s->avctx, AV_LOG_ERROR, "Unsupported coding and pixel format combination\n"); | |
600 | return AVERROR_PATCHWELCOME; | |
601 | } | |
602 | ||
603 | /* totally blank picture as progressive JPEG will only add details to it */ | |
604 | if (s->progressive) { | |
605 | int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8); | |
606 | int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8); | |
607 | for (i = 0; i < s->nb_components; i++) { | |
608 | int size = bw * bh * s->h_count[i] * s->v_count[i]; | |
609 | av_freep(&s->blocks[i]); | |
610 | av_freep(&s->last_nnz[i]); | |
611 | s->blocks[i] = av_mallocz_array(size, sizeof(**s->blocks)); | |
612 | s->last_nnz[i] = av_mallocz_array(size, sizeof(**s->last_nnz)); | |
613 | if (!s->blocks[i] || !s->last_nnz[i]) | |
614 | return AVERROR(ENOMEM); | |
615 | s->block_stride[i] = bw * s->h_count[i]; | |
616 | } | |
617 | memset(s->coefs_finished, 0, sizeof(s->coefs_finished)); | |
618 | } | |
619 | return 0; | |
620 | } | |
621 | ||
622 | static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index) | |
623 | { | |
624 | int code; | |
625 | code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2); | |
626 | if (code < 0 || code > 16) { | |
627 | av_log(s->avctx, AV_LOG_WARNING, | |
628 | "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n", | |
629 | 0, dc_index, &s->vlcs[0][dc_index]); | |
630 | return 0xfffff; | |
631 | } | |
632 | ||
633 | if (code) | |
634 | return get_xbits(&s->gb, code); | |
635 | else | |
636 | return 0; | |
637 | } | |
638 | ||
639 | /* decode block and dequantize */ | |
640 | static int decode_block(MJpegDecodeContext *s, int16_t *block, int component, | |
641 | int dc_index, int ac_index, int16_t *quant_matrix) | |
642 | { | |
643 | int code, i, j, level, val; | |
644 | ||
645 | /* DC coef */ | |
646 | val = mjpeg_decode_dc(s, dc_index); | |
647 | if (val == 0xfffff) { | |
648 | av_log(s->avctx, AV_LOG_ERROR, "error dc\n"); | |
649 | return AVERROR_INVALIDDATA; | |
650 | } | |
651 | val = val * quant_matrix[0] + s->last_dc[component]; | |
652 | s->last_dc[component] = val; | |
653 | block[0] = val; | |
654 | /* AC coefs */ | |
655 | i = 0; | |
656 | {OPEN_READER(re, &s->gb); | |
657 | do { | |
658 | UPDATE_CACHE(re, &s->gb); | |
659 | GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2); | |
660 | ||
661 | i += ((unsigned)code) >> 4; | |
662 | code &= 0xf; | |
663 | if (code) { | |
664 | if (code > MIN_CACHE_BITS - 16) | |
665 | UPDATE_CACHE(re, &s->gb); | |
666 | ||
667 | { | |
668 | int cache = GET_CACHE(re, &s->gb); | |
669 | int sign = (~cache) >> 31; | |
670 | level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign; | |
671 | } | |
672 | ||
673 | LAST_SKIP_BITS(re, &s->gb, code); | |
674 | ||
675 | if (i > 63) { | |
676 | av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); | |
677 | return AVERROR_INVALIDDATA; | |
678 | } | |
679 | j = s->scantable.permutated[i]; | |
680 | block[j] = level * quant_matrix[j]; | |
681 | } | |
682 | } while (i < 63); | |
683 | CLOSE_READER(re, &s->gb);} | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | static int decode_dc_progressive(MJpegDecodeContext *s, int16_t *block, | |
689 | int component, int dc_index, | |
690 | int16_t *quant_matrix, int Al) | |
691 | { | |
692 | int val; | |
693 | s->bdsp.clear_block(block); | |
694 | val = mjpeg_decode_dc(s, dc_index); | |
695 | if (val == 0xfffff) { | |
696 | av_log(s->avctx, AV_LOG_ERROR, "error dc\n"); | |
697 | return AVERROR_INVALIDDATA; | |
698 | } | |
699 | val = (val * quant_matrix[0] << Al) + s->last_dc[component]; | |
700 | s->last_dc[component] = val; | |
701 | block[0] = val; | |
702 | return 0; | |
703 | } | |
704 | ||
705 | /* decode block and dequantize - progressive JPEG version */ | |
706 | static int decode_block_progressive(MJpegDecodeContext *s, int16_t *block, | |
707 | uint8_t *last_nnz, int ac_index, | |
708 | int16_t *quant_matrix, | |
709 | int ss, int se, int Al, int *EOBRUN) | |
710 | { | |
711 | int code, i, j, level, val, run; | |
712 | ||
713 | if (*EOBRUN) { | |
714 | (*EOBRUN)--; | |
715 | return 0; | |
716 | } | |
717 | ||
718 | { | |
719 | OPEN_READER(re, &s->gb); | |
720 | for (i = ss; ; i++) { | |
721 | UPDATE_CACHE(re, &s->gb); | |
722 | GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2); | |
723 | ||
724 | run = ((unsigned) code) >> 4; | |
725 | code &= 0xF; | |
726 | if (code) { | |
727 | i += run; | |
728 | if (code > MIN_CACHE_BITS - 16) | |
729 | UPDATE_CACHE(re, &s->gb); | |
730 | ||
731 | { | |
732 | int cache = GET_CACHE(re, &s->gb); | |
733 | int sign = (~cache) >> 31; | |
734 | level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign; | |
735 | } | |
736 | ||
737 | LAST_SKIP_BITS(re, &s->gb, code); | |
738 | ||
739 | if (i >= se) { | |
740 | if (i == se) { | |
741 | j = s->scantable.permutated[se]; | |
742 | block[j] = level * quant_matrix[j] << Al; | |
743 | break; | |
744 | } | |
745 | av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); | |
746 | return AVERROR_INVALIDDATA; | |
747 | } | |
748 | j = s->scantable.permutated[i]; | |
749 | block[j] = level * quant_matrix[j] << Al; | |
750 | } else { | |
751 | if (run == 0xF) {// ZRL - skip 15 coefficients | |
752 | i += 15; | |
753 | if (i >= se) { | |
754 | av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i); | |
755 | return AVERROR_INVALIDDATA; | |
756 | } | |
757 | } else { | |
758 | val = (1 << run); | |
759 | if (run) { | |
760 | UPDATE_CACHE(re, &s->gb); | |
761 | val += NEG_USR32(GET_CACHE(re, &s->gb), run); | |
762 | LAST_SKIP_BITS(re, &s->gb, run); | |
763 | } | |
764 | *EOBRUN = val - 1; | |
765 | break; | |
766 | } | |
767 | } | |
768 | } | |
769 | CLOSE_READER(re, &s->gb); | |
770 | } | |
771 | ||
772 | if (i > *last_nnz) | |
773 | *last_nnz = i; | |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | #define REFINE_BIT(j) { \ | |
779 | UPDATE_CACHE(re, &s->gb); \ | |
780 | sign = block[j] >> 15; \ | |
781 | block[j] += SHOW_UBITS(re, &s->gb, 1) * \ | |
782 | ((quant_matrix[j] ^ sign) - sign) << Al; \ | |
783 | LAST_SKIP_BITS(re, &s->gb, 1); \ | |
784 | } | |
785 | ||
786 | #define ZERO_RUN \ | |
787 | for (; ; i++) { \ | |
788 | if (i > last) { \ | |
789 | i += run; \ | |
790 | if (i > se) { \ | |
791 | av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \ | |
792 | return -1; \ | |
793 | } \ | |
794 | break; \ | |
795 | } \ | |
796 | j = s->scantable.permutated[i]; \ | |
797 | if (block[j]) \ | |
798 | REFINE_BIT(j) \ | |
799 | else if (run-- == 0) \ | |
800 | break; \ | |
801 | } | |
802 | ||
803 | /* decode block and dequantize - progressive JPEG refinement pass */ | |
804 | static int decode_block_refinement(MJpegDecodeContext *s, int16_t *block, | |
805 | uint8_t *last_nnz, | |
806 | int ac_index, int16_t *quant_matrix, | |
807 | int ss, int se, int Al, int *EOBRUN) | |
808 | { | |
809 | int code, i = ss, j, sign, val, run; | |
810 | int last = FFMIN(se, *last_nnz); | |
811 | ||
812 | OPEN_READER(re, &s->gb); | |
813 | if (*EOBRUN) { | |
814 | (*EOBRUN)--; | |
815 | } else { | |
816 | for (; ; i++) { | |
817 | UPDATE_CACHE(re, &s->gb); | |
818 | GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2); | |
819 | ||
820 | if (code & 0xF) { | |
821 | run = ((unsigned) code) >> 4; | |
822 | UPDATE_CACHE(re, &s->gb); | |
823 | val = SHOW_UBITS(re, &s->gb, 1); | |
824 | LAST_SKIP_BITS(re, &s->gb, 1); | |
825 | ZERO_RUN; | |
826 | j = s->scantable.permutated[i]; | |
827 | val--; | |
828 | block[j] = ((quant_matrix[j]^val) - val) << Al; | |
829 | if (i == se) { | |
830 | if (i > *last_nnz) | |
831 | *last_nnz = i; | |
832 | CLOSE_READER(re, &s->gb); | |
833 | return 0; | |
834 | } | |
835 | } else { | |
836 | run = ((unsigned) code) >> 4; | |
837 | if (run == 0xF) { | |
838 | ZERO_RUN; | |
839 | } else { | |
840 | val = run; | |
841 | run = (1 << run); | |
842 | if (val) { | |
843 | UPDATE_CACHE(re, &s->gb); | |
844 | run += SHOW_UBITS(re, &s->gb, val); | |
845 | LAST_SKIP_BITS(re, &s->gb, val); | |
846 | } | |
847 | *EOBRUN = run - 1; | |
848 | break; | |
849 | } | |
850 | } | |
851 | } | |
852 | ||
853 | if (i > *last_nnz) | |
854 | *last_nnz = i; | |
855 | } | |
856 | ||
857 | for (; i <= last; i++) { | |
858 | j = s->scantable.permutated[i]; | |
859 | if (block[j]) | |
860 | REFINE_BIT(j) | |
861 | } | |
862 | CLOSE_READER(re, &s->gb); | |
863 | ||
864 | return 0; | |
865 | } | |
866 | #undef REFINE_BIT | |
867 | #undef ZERO_RUN | |
868 | ||
869 | static int handle_rstn(MJpegDecodeContext *s, int nb_components) | |
870 | { | |
871 | int i; | |
872 | int reset = 0; | |
873 | ||
874 | if (s->restart_interval) { | |
875 | s->restart_count--; | |
876 | if(s->restart_count == 0 && s->avctx->codec_id == AV_CODEC_ID_THP){ | |
877 | align_get_bits(&s->gb); | |
878 | for (i = 0; i < nb_components; i++) /* reset dc */ | |
879 | s->last_dc[i] = (4 << s->bits); | |
880 | } | |
881 | ||
882 | i = 8 + ((-get_bits_count(&s->gb)) & 7); | |
883 | /* skip RSTn */ | |
884 | if (s->restart_count == 0) { | |
885 | if( show_bits(&s->gb, i) == (1 << i) - 1 | |
886 | || show_bits(&s->gb, i) == 0xFF) { | |
887 | int pos = get_bits_count(&s->gb); | |
888 | align_get_bits(&s->gb); | |
889 | while (get_bits_left(&s->gb) >= 8 && show_bits(&s->gb, 8) == 0xFF) | |
890 | skip_bits(&s->gb, 8); | |
891 | if (get_bits_left(&s->gb) >= 8 && (get_bits(&s->gb, 8) & 0xF8) == 0xD0) { | |
892 | for (i = 0; i < nb_components; i++) /* reset dc */ | |
893 | s->last_dc[i] = (4 << s->bits); | |
894 | reset = 1; | |
895 | } else | |
896 | skip_bits_long(&s->gb, pos - get_bits_count(&s->gb)); | |
897 | } | |
898 | } | |
899 | } | |
900 | return reset; | |
901 | } | |
902 | ||
903 | static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int predictor, int point_transform) | |
904 | { | |
905 | int i, mb_x, mb_y; | |
906 | uint16_t (*buffer)[4]; | |
907 | int left[4], top[4], topleft[4]; | |
908 | const int linesize = s->linesize[0]; | |
909 | const int mask = ((1 << s->bits) - 1) << point_transform; | |
910 | int resync_mb_y = 0; | |
911 | int resync_mb_x = 0; | |
912 | ||
913 | if (s->nb_components != 3 && s->nb_components != 4) | |
914 | return AVERROR_INVALIDDATA; | |
915 | if (s->v_max != 1 || s->h_max != 1 || !s->lossless) | |
916 | return AVERROR_INVALIDDATA; | |
917 | ||
918 | ||
919 | s->restart_count = s->restart_interval; | |
920 | ||
921 | av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size, | |
922 | (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0])); | |
923 | buffer = s->ljpeg_buffer; | |
924 | ||
925 | for (i = 0; i < 4; i++) | |
926 | buffer[0][i] = 1 << (s->bits - 1); | |
927 | ||
928 | for (mb_y = 0; mb_y < s->mb_height; mb_y++) { | |
929 | uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y); | |
930 | ||
931 | if (s->interlaced && s->bottom_field) | |
932 | ptr += linesize >> 1; | |
933 | ||
934 | for (i = 0; i < 4; i++) | |
935 | top[i] = left[i] = topleft[i] = buffer[0][i]; | |
936 | ||
937 | for (mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
938 | int modified_predictor = predictor; | |
939 | ||
940 | if (s->restart_interval && !s->restart_count){ | |
941 | s->restart_count = s->restart_interval; | |
942 | resync_mb_x = mb_x; | |
943 | resync_mb_y = mb_y; | |
944 | for(i=0; i<4; i++) | |
945 | top[i] = left[i]= topleft[i]= 1 << (s->bits - 1); | |
946 | } | |
947 | if (mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || !mb_x) | |
948 | modified_predictor = 1; | |
949 | ||
950 | for (i=0;i<nb_components;i++) { | |
951 | int pred, dc; | |
952 | ||
953 | topleft[i] = top[i]; | |
954 | top[i] = buffer[mb_x][i]; | |
955 | ||
956 | PREDICT(pred, topleft[i], top[i], left[i], modified_predictor); | |
957 | ||
958 | dc = mjpeg_decode_dc(s, s->dc_index[i]); | |
959 | if(dc == 0xFFFFF) | |
960 | return -1; | |
961 | ||
962 | left[i] = buffer[mb_x][i] = | |
963 | mask & (pred + (dc << point_transform)); | |
964 | } | |
965 | ||
966 | if (s->restart_interval && !--s->restart_count) { | |
967 | align_get_bits(&s->gb); | |
968 | skip_bits(&s->gb, 16); /* skip RSTn */ | |
969 | } | |
970 | } | |
971 | if (s->nb_components == 4) { | |
972 | for(i=0; i<nb_components; i++) { | |
973 | int c= s->comp_index[i]; | |
974 | if (s->bits <= 8) { | |
975 | for(mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
976 | ptr[4*mb_x+3-c] = buffer[mb_x][i]; | |
977 | } | |
978 | } else if(s->bits == 9) { | |
979 | return AVERROR_PATCHWELCOME; | |
980 | } else { | |
981 | for(mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
982 | ((uint16_t*)ptr)[4*mb_x+c] = buffer[mb_x][i]; | |
983 | } | |
984 | } | |
985 | } | |
986 | } else if (s->rct) { | |
987 | for (mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
988 | ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2); | |
989 | ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1]; | |
990 | ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1]; | |
991 | } | |
992 | } else if (s->pegasus_rct) { | |
993 | for (mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
994 | ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2]) >> 2); | |
995 | ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1]; | |
996 | ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1]; | |
997 | } | |
998 | } else { | |
999 | for(i=0; i<nb_components; i++) { | |
1000 | int c= s->comp_index[i]; | |
1001 | if (s->bits <= 8) { | |
1002 | for(mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
1003 | ptr[3*mb_x+2-c] = buffer[mb_x][i]; | |
1004 | } | |
1005 | } else if(s->bits == 9) { | |
1006 | return AVERROR_PATCHWELCOME; | |
1007 | } else { | |
1008 | for(mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
1009 | ((uint16_t*)ptr)[3*mb_x+2-c] = buffer[mb_x][i]; | |
1010 | } | |
1011 | } | |
1012 | } | |
1013 | } | |
1014 | } | |
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, | |
1019 | int point_transform, int nb_components) | |
1020 | { | |
1021 | int i, mb_x, mb_y, mask; | |
1022 | int bits= (s->bits+7)&~7; | |
1023 | int resync_mb_y = 0; | |
1024 | int resync_mb_x = 0; | |
1025 | ||
1026 | point_transform += bits - s->bits; | |
1027 | mask = ((1 << s->bits) - 1) << point_transform; | |
1028 | ||
1029 | av_assert0(nb_components>=1 && nb_components<=4); | |
1030 | ||
1031 | for (mb_y = 0; mb_y < s->mb_height; mb_y++) { | |
1032 | for (mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
1033 | if (s->restart_interval && !s->restart_count){ | |
1034 | s->restart_count = s->restart_interval; | |
1035 | resync_mb_x = mb_x; | |
1036 | resync_mb_y = mb_y; | |
1037 | } | |
1038 | ||
1039 | if(!mb_x || mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || s->interlaced){ | |
1040 | int toprow = mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x; | |
1041 | int leftcol = !mb_x || mb_y == resync_mb_y && mb_x == resync_mb_x; | |
1042 | for (i = 0; i < nb_components; i++) { | |
1043 | uint8_t *ptr; | |
1044 | uint16_t *ptr16; | |
1045 | int n, h, v, x, y, c, j, linesize; | |
1046 | n = s->nb_blocks[i]; | |
1047 | c = s->comp_index[i]; | |
1048 | h = s->h_scount[i]; | |
1049 | v = s->v_scount[i]; | |
1050 | x = 0; | |
1051 | y = 0; | |
1052 | linesize= s->linesize[c]; | |
1053 | ||
1054 | if(bits>8) linesize /= 2; | |
1055 | ||
1056 | for(j=0; j<n; j++) { | |
1057 | int pred, dc; | |
1058 | ||
1059 | dc = mjpeg_decode_dc(s, s->dc_index[i]); | |
1060 | if(dc == 0xFFFFF) | |
1061 | return -1; | |
1062 | if(bits<=8){ | |
1063 | ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap | |
1064 | if(y==0 && toprow){ | |
1065 | if(x==0 && leftcol){ | |
1066 | pred= 1 << (bits - 1); | |
1067 | }else{ | |
1068 | pred= ptr[-1]; | |
1069 | } | |
1070 | }else{ | |
1071 | if(x==0 && leftcol){ | |
1072 | pred= ptr[-linesize]; | |
1073 | }else{ | |
1074 | PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); | |
1075 | } | |
1076 | } | |
1077 | ||
1078 | if (s->interlaced && s->bottom_field) | |
1079 | ptr += linesize >> 1; | |
1080 | pred &= mask; | |
1081 | *ptr= pred + (dc << point_transform); | |
1082 | }else{ | |
1083 | ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap | |
1084 | if(y==0 && toprow){ | |
1085 | if(x==0 && leftcol){ | |
1086 | pred= 1 << (bits - 1); | |
1087 | }else{ | |
1088 | pred= ptr16[-1]; | |
1089 | } | |
1090 | }else{ | |
1091 | if(x==0 && leftcol){ | |
1092 | pred= ptr16[-linesize]; | |
1093 | }else{ | |
1094 | PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor); | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | if (s->interlaced && s->bottom_field) | |
1099 | ptr16 += linesize >> 1; | |
1100 | pred &= mask; | |
1101 | *ptr16= pred + (dc << point_transform); | |
1102 | } | |
1103 | if (++x == h) { | |
1104 | x = 0; | |
1105 | y++; | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | } else { | |
1110 | for (i = 0; i < nb_components; i++) { | |
1111 | uint8_t *ptr; | |
1112 | uint16_t *ptr16; | |
1113 | int n, h, v, x, y, c, j, linesize, dc; | |
1114 | n = s->nb_blocks[i]; | |
1115 | c = s->comp_index[i]; | |
1116 | h = s->h_scount[i]; | |
1117 | v = s->v_scount[i]; | |
1118 | x = 0; | |
1119 | y = 0; | |
1120 | linesize = s->linesize[c]; | |
1121 | ||
1122 | if(bits>8) linesize /= 2; | |
1123 | ||
1124 | for (j = 0; j < n; j++) { | |
1125 | int pred; | |
1126 | ||
1127 | dc = mjpeg_decode_dc(s, s->dc_index[i]); | |
1128 | if(dc == 0xFFFFF) | |
1129 | return -1; | |
1130 | if(bits<=8){ | |
1131 | ptr = s->picture_ptr->data[c] + | |
1132 | (linesize * (v * mb_y + y)) + | |
1133 | (h * mb_x + x); //FIXME optimize this crap | |
1134 | PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); | |
1135 | ||
1136 | pred &= mask; | |
1137 | *ptr = pred + (dc << point_transform); | |
1138 | }else{ | |
1139 | ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap | |
1140 | PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor); | |
1141 | ||
1142 | pred &= mask; | |
1143 | *ptr16= pred + (dc << point_transform); | |
1144 | } | |
1145 | ||
1146 | if (++x == h) { | |
1147 | x = 0; | |
1148 | y++; | |
1149 | } | |
1150 | } | |
1151 | } | |
1152 | } | |
1153 | if (s->restart_interval && !--s->restart_count) { | |
1154 | align_get_bits(&s->gb); | |
1155 | skip_bits(&s->gb, 16); /* skip RSTn */ | |
1156 | } | |
1157 | } | |
1158 | } | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | static av_always_inline void mjpeg_copy_block(MJpegDecodeContext *s, | |
1163 | uint8_t *dst, const uint8_t *src, | |
1164 | int linesize, int lowres) | |
1165 | { | |
1166 | switch (lowres) { | |
1167 | case 0: s->hdsp.put_pixels_tab[1][0](dst, src, linesize, 8); | |
1168 | break; | |
1169 | case 1: copy_block4(dst, src, linesize, linesize, 4); | |
1170 | break; | |
1171 | case 2: copy_block2(dst, src, linesize, linesize, 2); | |
1172 | break; | |
1173 | case 3: *dst = *src; | |
1174 | break; | |
1175 | } | |
1176 | } | |
1177 | ||
1178 | static void shift_output(MJpegDecodeContext *s, uint8_t *ptr, int linesize) | |
1179 | { | |
1180 | int block_x, block_y; | |
1181 | int size = 8 >> s->avctx->lowres; | |
1182 | if (s->bits > 8) { | |
1183 | for (block_y=0; block_y<size; block_y++) | |
1184 | for (block_x=0; block_x<size; block_x++) | |
1185 | *(uint16_t*)(ptr + 2*block_x + block_y*linesize) <<= 16 - s->bits; | |
1186 | } else { | |
1187 | for (block_y=0; block_y<size; block_y++) | |
1188 | for (block_x=0; block_x<size; block_x++) | |
1189 | *(ptr + block_x + block_y*linesize) <<= 8 - s->bits; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, | |
1194 | int Al, const uint8_t *mb_bitmask, | |
1195 | int mb_bitmask_size, | |
1196 | const AVFrame *reference) | |
1197 | { | |
1198 | int i, mb_x, mb_y; | |
1199 | uint8_t *data[MAX_COMPONENTS]; | |
1200 | const uint8_t *reference_data[MAX_COMPONENTS]; | |
1201 | int linesize[MAX_COMPONENTS]; | |
1202 | GetBitContext mb_bitmask_gb = {0}; // initialize to silence gcc warning | |
1203 | int bytes_per_pixel = 1 + (s->bits > 8); | |
1204 | ||
1205 | if (mb_bitmask) { | |
1206 | if (mb_bitmask_size != (s->mb_width * s->mb_height + 7)>>3) { | |
1207 | av_log(s->avctx, AV_LOG_ERROR, "mb_bitmask_size mismatches\n"); | |
1208 | return AVERROR_INVALIDDATA; | |
1209 | } | |
1210 | init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height); | |
1211 | } | |
1212 | ||
1213 | s->restart_count = 0; | |
1214 | ||
1215 | for (i = 0; i < nb_components; i++) { | |
1216 | int c = s->comp_index[i]; | |
1217 | data[c] = s->picture_ptr->data[c]; | |
1218 | reference_data[c] = reference ? reference->data[c] : NULL; | |
1219 | linesize[c] = s->linesize[c]; | |
1220 | s->coefs_finished[c] |= 1; | |
1221 | } | |
1222 | ||
1223 | for (mb_y = 0; mb_y < s->mb_height; mb_y++) { | |
1224 | for (mb_x = 0; mb_x < s->mb_width; mb_x++) { | |
1225 | const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb); | |
1226 | ||
1227 | if (s->restart_interval && !s->restart_count) | |
1228 | s->restart_count = s->restart_interval; | |
1229 | ||
1230 | if (get_bits_left(&s->gb) < 0) { | |
1231 | av_log(s->avctx, AV_LOG_ERROR, "overread %d\n", | |
1232 | -get_bits_left(&s->gb)); | |
1233 | return AVERROR_INVALIDDATA; | |
1234 | } | |
1235 | for (i = 0; i < nb_components; i++) { | |
1236 | uint8_t *ptr; | |
1237 | int n, h, v, x, y, c, j; | |
1238 | int block_offset; | |
1239 | n = s->nb_blocks[i]; | |
1240 | c = s->comp_index[i]; | |
1241 | h = s->h_scount[i]; | |
1242 | v = s->v_scount[i]; | |
1243 | x = 0; | |
1244 | y = 0; | |
1245 | for (j = 0; j < n; j++) { | |
1246 | block_offset = (((linesize[c] * (v * mb_y + y) * 8) + | |
1247 | (h * mb_x + x) * 8 * bytes_per_pixel) >> s->avctx->lowres); | |
1248 | ||
1249 | if (s->interlaced && s->bottom_field) | |
1250 | block_offset += linesize[c] >> 1; | |
1251 | ptr = data[c] + block_offset; | |
1252 | if (!s->progressive) { | |
1253 | if (copy_mb) | |
1254 | mjpeg_copy_block(s, ptr, reference_data[c] + block_offset, | |
1255 | linesize[c], s->avctx->lowres); | |
1256 | ||
1257 | else { | |
1258 | s->bdsp.clear_block(s->block); | |
1259 | if (decode_block(s, s->block, i, | |
1260 | s->dc_index[i], s->ac_index[i], | |
1261 | s->quant_matrixes[s->quant_sindex[i]]) < 0) { | |
1262 | av_log(s->avctx, AV_LOG_ERROR, | |
1263 | "error y=%d x=%d\n", mb_y, mb_x); | |
1264 | return AVERROR_INVALIDDATA; | |
1265 | } | |
1266 | s->idsp.idct_put(ptr, linesize[c], s->block); | |
1267 | if (s->bits & 7) | |
1268 | shift_output(s, ptr, linesize[c]); | |
1269 | } | |
1270 | } else { | |
1271 | int block_idx = s->block_stride[c] * (v * mb_y + y) + | |
1272 | (h * mb_x + x); | |
1273 | int16_t *block = s->blocks[c][block_idx]; | |
1274 | if (Ah) | |
1275 | block[0] += get_bits1(&s->gb) * | |
1276 | s->quant_matrixes[s->quant_sindex[i]][0] << Al; | |
1277 | else if (decode_dc_progressive(s, block, i, s->dc_index[i], | |
1278 | s->quant_matrixes[s->quant_sindex[i]], | |
1279 | Al) < 0) { | |
1280 | av_log(s->avctx, AV_LOG_ERROR, | |
1281 | "error y=%d x=%d\n", mb_y, mb_x); | |
1282 | return AVERROR_INVALIDDATA; | |
1283 | } | |
1284 | } | |
1285 | av_dlog(s->avctx, "mb: %d %d processed\n", mb_y, mb_x); | |
1286 | av_dlog(s->avctx, "%d %d %d %d %d %d %d %d \n", | |
1287 | mb_x, mb_y, x, y, c, s->bottom_field, | |
1288 | (v * mb_y + y) * 8, (h * mb_x + x) * 8); | |
1289 | if (++x == h) { | |
1290 | x = 0; | |
1291 | y++; | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | handle_rstn(s, nb_components); | |
1297 | } | |
1298 | } | |
1299 | return 0; | |
1300 | } | |
1301 | ||
1302 | static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, | |
1303 | int se, int Ah, int Al) | |
1304 | { | |
1305 | int mb_x, mb_y; | |
1306 | int EOBRUN = 0; | |
1307 | int c = s->comp_index[0]; | |
1308 | uint8_t *data = s->picture_ptr->data[c]; | |
1309 | int linesize = s->linesize[c]; | |
1310 | int last_scan = 0; | |
1311 | int16_t *quant_matrix = s->quant_matrixes[s->quant_sindex[0]]; | |
1312 | int bytes_per_pixel = 1 + (s->bits > 8); | |
1313 | ||
1314 | av_assert0(ss>=0 && Ah>=0 && Al>=0); | |
1315 | if (se < ss || se > 63) { | |
1316 | av_log(s->avctx, AV_LOG_ERROR, "SS/SE %d/%d is invalid\n", ss, se); | |
1317 | return AVERROR_INVALIDDATA; | |
1318 | } | |
1319 | ||
1320 | if (!Al) { | |
f6fa7814 DM |
1321 | // s->coefs_finished is a bitmask for coefficients coded |
1322 | // ss and se are parameters telling start and end coefficients | |
2ba45a60 DM |
1323 | s->coefs_finished[c] |= (2ULL << se) - (1ULL << ss); |
1324 | last_scan = !~s->coefs_finished[c]; | |
1325 | } | |
1326 | ||
1327 | if (s->interlaced && s->bottom_field) | |
1328 | data += linesize >> 1; | |
1329 | ||
1330 | s->restart_count = 0; | |
1331 | ||
1332 | for (mb_y = 0; mb_y < s->mb_height; mb_y++) { | |
1333 | uint8_t *ptr = data + (mb_y * linesize * 8 >> s->avctx->lowres); | |
1334 | int block_idx = mb_y * s->block_stride[c]; | |
1335 | int16_t (*block)[64] = &s->blocks[c][block_idx]; | |
1336 | uint8_t *last_nnz = &s->last_nnz[c][block_idx]; | |
1337 | for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) { | |
1338 | int ret; | |
1339 | if (s->restart_interval && !s->restart_count) | |
1340 | s->restart_count = s->restart_interval; | |
1341 | ||
1342 | if (Ah) | |
1343 | ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0], | |
1344 | quant_matrix, ss, se, Al, &EOBRUN); | |
1345 | else | |
1346 | ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0], | |
1347 | quant_matrix, ss, se, Al, &EOBRUN); | |
1348 | if (ret < 0) { | |
1349 | av_log(s->avctx, AV_LOG_ERROR, | |
1350 | "error y=%d x=%d\n", mb_y, mb_x); | |
1351 | return AVERROR_INVALIDDATA; | |
1352 | } | |
1353 | ||
1354 | if (last_scan) { | |
1355 | s->idsp.idct_put(ptr, linesize, *block); | |
1356 | if (s->bits & 7) | |
1357 | shift_output(s, ptr, linesize); | |
1358 | ptr += bytes_per_pixel*8 >> s->avctx->lowres; | |
1359 | } | |
1360 | if (handle_rstn(s, 0)) | |
1361 | EOBRUN = 0; | |
1362 | } | |
1363 | } | |
1364 | return 0; | |
1365 | } | |
1366 | ||
1367 | int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask, | |
1368 | int mb_bitmask_size, const AVFrame *reference) | |
1369 | { | |
1370 | int len, nb_components, i, h, v, predictor, point_transform; | |
1371 | int index, id, ret; | |
1372 | const int block_size = s->lossless ? 1 : 8; | |
1373 | int ilv, prev_shift; | |
1374 | ||
1375 | if (!s->got_picture) { | |
1376 | av_log(s->avctx, AV_LOG_WARNING, | |
1377 | "Can not process SOS before SOF, skipping\n"); | |
1378 | return -1; | |
1379 | } | |
1380 | ||
1381 | av_assert0(s->picture_ptr->data[0]); | |
1382 | /* XXX: verify len field validity */ | |
1383 | len = get_bits(&s->gb, 16); | |
1384 | nb_components = get_bits(&s->gb, 8); | |
1385 | if (nb_components == 0 || nb_components > MAX_COMPONENTS) { | |
1386 | av_log(s->avctx, AV_LOG_ERROR, | |
1387 | "decode_sos: nb_components (%d) unsupported\n", nb_components); | |
1388 | return AVERROR_PATCHWELCOME; | |
1389 | } | |
1390 | if (len != 6 + 2 * nb_components) { | |
1391 | av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len); | |
1392 | return AVERROR_INVALIDDATA; | |
1393 | } | |
1394 | for (i = 0; i < nb_components; i++) { | |
1395 | id = get_bits(&s->gb, 8) - 1; | |
1396 | av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id); | |
1397 | /* find component index */ | |
1398 | for (index = 0; index < s->nb_components; index++) | |
1399 | if (id == s->component_id[index]) | |
1400 | break; | |
1401 | if (index == s->nb_components) { | |
1402 | av_log(s->avctx, AV_LOG_ERROR, | |
1403 | "decode_sos: index(%d) out of components\n", index); | |
1404 | return AVERROR_INVALIDDATA; | |
1405 | } | |
1406 | /* Metasoft MJPEG codec has Cb and Cr swapped */ | |
1407 | if (s->avctx->codec_tag == MKTAG('M', 'T', 'S', 'J') | |
1408 | && nb_components == 3 && s->nb_components == 3 && i) | |
1409 | index = 3 - i; | |
1410 | ||
1411 | s->quant_sindex[i] = s->quant_index[index]; | |
1412 | s->nb_blocks[i] = s->h_count[index] * s->v_count[index]; | |
1413 | s->h_scount[i] = s->h_count[index]; | |
1414 | s->v_scount[i] = s->v_count[index]; | |
1415 | ||
1416 | if(nb_components == 3 && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P) | |
1417 | index = (i+2)%3; | |
1418 | if(nb_components == 1 && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P) | |
1419 | index = (index+2)%3; | |
1420 | ||
1421 | s->comp_index[i] = index; | |
1422 | ||
1423 | s->dc_index[i] = get_bits(&s->gb, 4); | |
1424 | s->ac_index[i] = get_bits(&s->gb, 4); | |
1425 | ||
1426 | if (s->dc_index[i] < 0 || s->ac_index[i] < 0 || | |
1427 | s->dc_index[i] >= 4 || s->ac_index[i] >= 4) | |
1428 | goto out_of_range; | |
1429 | if (!s->vlcs[0][s->dc_index[i]].table || !(s->progressive ? s->vlcs[2][s->ac_index[0]].table : s->vlcs[1][s->ac_index[i]].table)) | |
1430 | goto out_of_range; | |
1431 | } | |
1432 | ||
1433 | predictor = get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */ | |
1434 | ilv = get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */ | |
1435 | if(s->avctx->codec_tag != AV_RL32("CJPG")){ | |
1436 | prev_shift = get_bits(&s->gb, 4); /* Ah */ | |
1437 | point_transform = get_bits(&s->gb, 4); /* Al */ | |
1438 | }else | |
1439 | prev_shift = point_transform = 0; | |
1440 | ||
1441 | if (nb_components > 1) { | |
1442 | /* interleaved stream */ | |
1443 | s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size); | |
1444 | s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size); | |
1445 | } else if (!s->ls) { /* skip this for JPEG-LS */ | |
1446 | h = s->h_max / s->h_scount[0]; | |
1447 | v = s->v_max / s->v_scount[0]; | |
1448 | s->mb_width = (s->width + h * block_size - 1) / (h * block_size); | |
1449 | s->mb_height = (s->height + v * block_size - 1) / (v * block_size); | |
1450 | s->nb_blocks[0] = 1; | |
1451 | s->h_scount[0] = 1; | |
1452 | s->v_scount[0] = 1; | |
1453 | } | |
1454 | ||
1455 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1456 | av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d skip:%d %s comp:%d\n", | |
1457 | s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "", | |
1458 | predictor, point_transform, ilv, s->bits, s->mjpb_skiptosod, | |
1459 | s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""), nb_components); | |
1460 | ||
1461 | ||
1462 | /* mjpeg-b can have padding bytes between sos and image data, skip them */ | |
1463 | for (i = s->mjpb_skiptosod; i > 0; i--) | |
1464 | skip_bits(&s->gb, 8); | |
1465 | ||
1466 | next_field: | |
1467 | for (i = 0; i < nb_components; i++) | |
1468 | s->last_dc[i] = (4 << s->bits); | |
1469 | ||
1470 | if (s->lossless) { | |
1471 | av_assert0(s->picture_ptr == s->picture); | |
1472 | if (CONFIG_JPEGLS_DECODER && s->ls) { | |
1473 | // for () { | |
1474 | // reset_ls_coding_parameters(s, 0); | |
1475 | ||
1476 | if ((ret = ff_jpegls_decode_picture(s, predictor, | |
1477 | point_transform, ilv)) < 0) | |
1478 | return ret; | |
1479 | } else { | |
1480 | if (s->rgb) { | |
1481 | if ((ret = ljpeg_decode_rgb_scan(s, nb_components, predictor, point_transform)) < 0) | |
1482 | return ret; | |
1483 | } else { | |
1484 | if ((ret = ljpeg_decode_yuv_scan(s, predictor, | |
1485 | point_transform, | |
1486 | nb_components)) < 0) | |
1487 | return ret; | |
1488 | } | |
1489 | } | |
1490 | } else { | |
1491 | if (s->progressive && predictor) { | |
1492 | av_assert0(s->picture_ptr == s->picture); | |
1493 | if ((ret = mjpeg_decode_scan_progressive_ac(s, predictor, | |
1494 | ilv, prev_shift, | |
1495 | point_transform)) < 0) | |
1496 | return ret; | |
1497 | } else { | |
1498 | if ((ret = mjpeg_decode_scan(s, nb_components, | |
1499 | prev_shift, point_transform, | |
1500 | mb_bitmask, mb_bitmask_size, reference)) < 0) | |
1501 | return ret; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | if (s->interlaced && | |
1506 | get_bits_left(&s->gb) > 32 && | |
1507 | show_bits(&s->gb, 8) == 0xFF) { | |
1508 | GetBitContext bak = s->gb; | |
1509 | align_get_bits(&bak); | |
1510 | if (show_bits(&bak, 16) == 0xFFD1) { | |
1511 | av_log(s->avctx, AV_LOG_DEBUG, "AVRn interlaced picture marker found\n"); | |
1512 | s->gb = bak; | |
1513 | skip_bits(&s->gb, 16); | |
1514 | s->bottom_field ^= 1; | |
1515 | ||
1516 | goto next_field; | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | emms_c(); | |
1521 | return 0; | |
1522 | out_of_range: | |
1523 | av_log(s->avctx, AV_LOG_ERROR, "decode_sos: ac/dc index out of range\n"); | |
1524 | return AVERROR_INVALIDDATA; | |
1525 | } | |
1526 | ||
1527 | static int mjpeg_decode_dri(MJpegDecodeContext *s) | |
1528 | { | |
1529 | if (get_bits(&s->gb, 16) != 4) | |
1530 | return AVERROR_INVALIDDATA; | |
1531 | s->restart_interval = get_bits(&s->gb, 16); | |
1532 | s->restart_count = 0; | |
1533 | av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n", | |
1534 | s->restart_interval); | |
1535 | ||
1536 | return 0; | |
1537 | } | |
1538 | ||
1539 | static int mjpeg_decode_app(MJpegDecodeContext *s) | |
1540 | { | |
1541 | int len, id, i; | |
1542 | ||
1543 | len = get_bits(&s->gb, 16); | |
1544 | if (len < 6) | |
1545 | return AVERROR_INVALIDDATA; | |
1546 | if (8 * len > get_bits_left(&s->gb)) | |
1547 | return AVERROR_INVALIDDATA; | |
1548 | ||
1549 | id = get_bits_long(&s->gb, 32); | |
1550 | len -= 6; | |
1551 | ||
1552 | if (s->avctx->debug & FF_DEBUG_STARTCODE) { | |
1553 | char id_str[32]; | |
1554 | av_get_codec_tag_string(id_str, sizeof(id_str), av_bswap32(id)); | |
1555 | av_log(s->avctx, AV_LOG_DEBUG, "APPx (%s / %8X) len=%d\n", id_str, id, len); | |
1556 | } | |
1557 | ||
1558 | /* Buggy AVID, it puts EOI only at every 10th frame. */ | |
1559 | /* Also, this fourcc is used by non-avid files too, it holds some | |
1560 | information, but it's always present in AVID-created files. */ | |
1561 | if (id == AV_RB32("AVI1")) { | |
1562 | /* structure: | |
1563 | 4bytes AVI1 | |
1564 | 1bytes polarity | |
1565 | 1bytes always zero | |
1566 | 4bytes field_size | |
1567 | 4bytes field_size_less_padding | |
1568 | */ | |
1569 | s->buggy_avid = 1; | |
1570 | i = get_bits(&s->gb, 8); len--; | |
1571 | av_log(s->avctx, AV_LOG_DEBUG, "polarity %d\n", i); | |
1572 | #if 0 | |
1573 | skip_bits(&s->gb, 8); | |
1574 | skip_bits(&s->gb, 32); | |
1575 | skip_bits(&s->gb, 32); | |
1576 | len -= 10; | |
1577 | #endif | |
1578 | goto out; | |
1579 | } | |
1580 | ||
1581 | // len -= 2; | |
1582 | ||
1583 | if (id == AV_RB32("JFIF")) { | |
1584 | int t_w, t_h, v1, v2; | |
1585 | skip_bits(&s->gb, 8); /* the trailing zero-byte */ | |
1586 | v1 = get_bits(&s->gb, 8); | |
1587 | v2 = get_bits(&s->gb, 8); | |
1588 | skip_bits(&s->gb, 8); | |
1589 | ||
1590 | s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 16); | |
1591 | s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 16); | |
1592 | ff_set_sar(s->avctx, s->avctx->sample_aspect_ratio); | |
1593 | ||
1594 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1595 | av_log(s->avctx, AV_LOG_INFO, | |
1596 | "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n", | |
1597 | v1, v2, | |
1598 | s->avctx->sample_aspect_ratio.num, | |
1599 | s->avctx->sample_aspect_ratio.den); | |
1600 | ||
1601 | t_w = get_bits(&s->gb, 8); | |
1602 | t_h = get_bits(&s->gb, 8); | |
1603 | if (t_w && t_h) { | |
1604 | /* skip thumbnail */ | |
1605 | if (len -10 - (t_w * t_h * 3) > 0) | |
1606 | len -= t_w * t_h * 3; | |
1607 | } | |
1608 | len -= 10; | |
1609 | goto out; | |
1610 | } | |
1611 | ||
1612 | if (id == AV_RB32("Adob") && (get_bits(&s->gb, 8) == 'e')) { | |
1613 | skip_bits(&s->gb, 16); /* version */ | |
1614 | skip_bits(&s->gb, 16); /* flags0 */ | |
1615 | skip_bits(&s->gb, 16); /* flags1 */ | |
1616 | s->adobe_transform = get_bits(&s->gb, 8); | |
1617 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1618 | av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found, transform=%d\n", s->adobe_transform); | |
1619 | len -= 7; | |
1620 | goto out; | |
1621 | } | |
1622 | ||
1623 | if (id == AV_RB32("LJIF")) { | |
f6fa7814 DM |
1624 | int rgb = s->rgb; |
1625 | int pegasus_rct = s->pegasus_rct; | |
2ba45a60 DM |
1626 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) |
1627 | av_log(s->avctx, AV_LOG_INFO, | |
1628 | "Pegasus lossless jpeg header found\n"); | |
1629 | skip_bits(&s->gb, 16); /* version ? */ | |
1630 | skip_bits(&s->gb, 16); /* unknown always 0? */ | |
1631 | skip_bits(&s->gb, 16); /* unknown always 0? */ | |
1632 | skip_bits(&s->gb, 16); /* unknown always 0? */ | |
1633 | switch (i=get_bits(&s->gb, 8)) { | |
1634 | case 1: | |
f6fa7814 DM |
1635 | rgb = 1; |
1636 | pegasus_rct = 0; | |
2ba45a60 DM |
1637 | break; |
1638 | case 2: | |
f6fa7814 DM |
1639 | rgb = 1; |
1640 | pegasus_rct = 1; | |
2ba45a60 DM |
1641 | break; |
1642 | default: | |
1643 | av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace %d\n", i); | |
1644 | } | |
f6fa7814 | 1645 | |
2ba45a60 | 1646 | len -= 9; |
f6fa7814 DM |
1647 | if (s->got_picture) |
1648 | if (rgb != s->rgb || pegasus_rct != s->pegasus_rct) { | |
1649 | av_log(s->avctx, AV_LOG_WARNING, "Mismatching LJIF tag\n"); | |
1650 | goto out; | |
1651 | } | |
1652 | ||
1653 | s->rgb = rgb; | |
1654 | s->pegasus_rct = pegasus_rct; | |
1655 | ||
2ba45a60 DM |
1656 | goto out; |
1657 | } | |
1658 | if (id == AV_RL32("colr") && len > 0) { | |
1659 | s->colr = get_bits(&s->gb, 8); | |
1660 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1661 | av_log(s->avctx, AV_LOG_INFO, "COLR %d\n", s->colr); | |
1662 | len --; | |
1663 | goto out; | |
1664 | } | |
1665 | if (id == AV_RL32("xfrm") && len > 0) { | |
1666 | s->xfrm = get_bits(&s->gb, 8); | |
1667 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1668 | av_log(s->avctx, AV_LOG_INFO, "XFRM %d\n", s->xfrm); | |
1669 | len --; | |
1670 | goto out; | |
1671 | } | |
1672 | ||
1673 | /* JPS extension by VRex */ | |
1674 | if (s->start_code == APP3 && id == AV_RB32("_JPS") && len >= 10) { | |
1675 | int flags, layout, type; | |
1676 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1677 | av_log(s->avctx, AV_LOG_INFO, "_JPSJPS_\n"); | |
1678 | ||
1679 | skip_bits(&s->gb, 32); len -= 4; /* JPS_ */ | |
1680 | skip_bits(&s->gb, 16); len -= 2; /* block length */ | |
1681 | skip_bits(&s->gb, 8); /* reserved */ | |
1682 | flags = get_bits(&s->gb, 8); | |
1683 | layout = get_bits(&s->gb, 8); | |
1684 | type = get_bits(&s->gb, 8); | |
1685 | len -= 4; | |
1686 | ||
1687 | s->stereo3d = av_stereo3d_alloc(); | |
1688 | if (!s->stereo3d) { | |
1689 | goto out; | |
1690 | } | |
1691 | if (type == 0) { | |
1692 | s->stereo3d->type = AV_STEREO3D_2D; | |
1693 | } else if (type == 1) { | |
1694 | switch (layout) { | |
1695 | case 0x01: | |
1696 | s->stereo3d->type = AV_STEREO3D_LINES; | |
1697 | break; | |
1698 | case 0x02: | |
1699 | s->stereo3d->type = AV_STEREO3D_SIDEBYSIDE; | |
1700 | break; | |
1701 | case 0x03: | |
1702 | s->stereo3d->type = AV_STEREO3D_TOPBOTTOM; | |
1703 | break; | |
1704 | } | |
1705 | if (!(flags & 0x04)) { | |
1706 | s->stereo3d->flags = AV_STEREO3D_FLAG_INVERT; | |
1707 | } | |
1708 | } | |
1709 | goto out; | |
1710 | } | |
1711 | ||
1712 | /* EXIF metadata */ | |
1713 | if (s->start_code == APP1 && id == AV_RB32("Exif") && len >= 2) { | |
1714 | GetByteContext gbytes; | |
1715 | int ret, le, ifd_offset, bytes_read; | |
1716 | const uint8_t *aligned; | |
1717 | ||
1718 | skip_bits(&s->gb, 16); // skip padding | |
1719 | len -= 2; | |
1720 | ||
1721 | // init byte wise reading | |
1722 | aligned = align_get_bits(&s->gb); | |
1723 | bytestream2_init(&gbytes, aligned, len); | |
1724 | ||
1725 | // read TIFF header | |
1726 | ret = ff_tdecode_header(&gbytes, &le, &ifd_offset); | |
1727 | if (ret) { | |
1728 | av_log(s->avctx, AV_LOG_ERROR, "mjpeg: invalid TIFF header in EXIF data\n"); | |
1729 | } else { | |
1730 | bytestream2_seek(&gbytes, ifd_offset, SEEK_SET); | |
1731 | ||
1732 | // read 0th IFD and store the metadata | |
1733 | // (return values > 0 indicate the presence of subimage metadata) | |
1734 | ret = avpriv_exif_decode_ifd(s->avctx, &gbytes, le, 0, &s->exif_metadata); | |
1735 | if (ret < 0) { | |
1736 | av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error decoding EXIF data\n"); | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | bytes_read = bytestream2_tell(&gbytes); | |
1741 | skip_bits(&s->gb, bytes_read << 3); | |
1742 | len -= bytes_read; | |
1743 | ||
1744 | goto out; | |
1745 | } | |
1746 | ||
1747 | /* Apple MJPEG-A */ | |
1748 | if ((s->start_code == APP1) && (len > (0x28 - 8))) { | |
1749 | id = get_bits_long(&s->gb, 32); | |
1750 | len -= 4; | |
1751 | /* Apple MJPEG-A */ | |
1752 | if (id == AV_RB32("mjpg")) { | |
1753 | #if 0 | |
1754 | skip_bits(&s->gb, 32); /* field size */ | |
1755 | skip_bits(&s->gb, 32); /* pad field size */ | |
1756 | skip_bits(&s->gb, 32); /* next off */ | |
1757 | skip_bits(&s->gb, 32); /* quant off */ | |
1758 | skip_bits(&s->gb, 32); /* huff off */ | |
1759 | skip_bits(&s->gb, 32); /* image off */ | |
1760 | skip_bits(&s->gb, 32); /* scan off */ | |
1761 | skip_bits(&s->gb, 32); /* data off */ | |
1762 | #endif | |
1763 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1764 | av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n"); | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | out: | |
1769 | /* slow but needed for extreme adobe jpegs */ | |
1770 | if (len < 0) | |
1771 | av_log(s->avctx, AV_LOG_ERROR, | |
1772 | "mjpeg: error, decode_app parser read over the end\n"); | |
1773 | while (--len > 0) | |
1774 | skip_bits(&s->gb, 8); | |
1775 | ||
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | static int mjpeg_decode_com(MJpegDecodeContext *s) | |
1780 | { | |
1781 | int len = get_bits(&s->gb, 16); | |
1782 | if (len >= 2 && 8 * len - 16 <= get_bits_left(&s->gb)) { | |
1783 | char *cbuf = av_malloc(len - 1); | |
1784 | if (cbuf) { | |
1785 | int i; | |
1786 | for (i = 0; i < len - 2; i++) | |
1787 | cbuf[i] = get_bits(&s->gb, 8); | |
1788 | if (i > 0 && cbuf[i - 1] == '\n') | |
1789 | cbuf[i - 1] = 0; | |
1790 | else | |
1791 | cbuf[i] = 0; | |
1792 | ||
1793 | if (s->avctx->debug & FF_DEBUG_PICT_INFO) | |
1794 | av_log(s->avctx, AV_LOG_INFO, "comment: '%s'\n", cbuf); | |
1795 | ||
1796 | /* buggy avid, it puts EOI only at every 10th frame */ | |
1797 | if (!strncmp(cbuf, "AVID", 4)) { | |
1798 | parse_avid(s, cbuf, len); | |
1799 | } else if (!strcmp(cbuf, "CS=ITU601")) | |
1800 | s->cs_itu601 = 1; | |
1801 | else if ((!strncmp(cbuf, "Intel(R) JPEG Library, version 1", 32) && s->avctx->codec_tag) || | |
1802 | (!strncmp(cbuf, "Metasoft MJPEG Codec", 20))) | |
1803 | s->flipped = 1; | |
1804 | ||
1805 | av_free(cbuf); | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | return 0; | |
1810 | } | |
1811 | ||
1812 | /* return the 8 bit start code value and update the search | |
1813 | state. Return -1 if no start code found */ | |
1814 | static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end) | |
1815 | { | |
1816 | const uint8_t *buf_ptr; | |
1817 | unsigned int v, v2; | |
1818 | int val; | |
1819 | int skipped = 0; | |
1820 | ||
1821 | buf_ptr = *pbuf_ptr; | |
1822 | while (buf_end - buf_ptr > 1) { | |
1823 | v = *buf_ptr++; | |
1824 | v2 = *buf_ptr; | |
1825 | if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) { | |
1826 | val = *buf_ptr++; | |
1827 | goto found; | |
1828 | } | |
1829 | skipped++; | |
1830 | } | |
1831 | buf_ptr = buf_end; | |
1832 | val = -1; | |
1833 | found: | |
1834 | av_dlog(NULL, "find_marker skipped %d bytes\n", skipped); | |
1835 | *pbuf_ptr = buf_ptr; | |
1836 | return val; | |
1837 | } | |
1838 | ||
1839 | int ff_mjpeg_find_marker(MJpegDecodeContext *s, | |
1840 | const uint8_t **buf_ptr, const uint8_t *buf_end, | |
1841 | const uint8_t **unescaped_buf_ptr, | |
1842 | int *unescaped_buf_size) | |
1843 | { | |
1844 | int start_code; | |
1845 | start_code = find_marker(buf_ptr, buf_end); | |
1846 | ||
1847 | av_fast_padded_malloc(&s->buffer, &s->buffer_size, buf_end - *buf_ptr); | |
1848 | if (!s->buffer) | |
1849 | return AVERROR(ENOMEM); | |
1850 | ||
1851 | /* unescape buffer of SOS, use special treatment for JPEG-LS */ | |
1852 | if (start_code == SOS && !s->ls) { | |
1853 | const uint8_t *src = *buf_ptr; | |
1854 | uint8_t *dst = s->buffer; | |
1855 | ||
1856 | while (src < buf_end) { | |
1857 | uint8_t x = *(src++); | |
1858 | ||
1859 | *(dst++) = x; | |
1860 | if (s->avctx->codec_id != AV_CODEC_ID_THP) { | |
1861 | if (x == 0xff) { | |
1862 | while (src < buf_end && x == 0xff) | |
1863 | x = *(src++); | |
1864 | ||
1865 | if (x >= 0xd0 && x <= 0xd7) | |
1866 | *(dst++) = x; | |
1867 | else if (x) | |
1868 | break; | |
1869 | } | |
1870 | } | |
1871 | } | |
1872 | *unescaped_buf_ptr = s->buffer; | |
1873 | *unescaped_buf_size = dst - s->buffer; | |
1874 | memset(s->buffer + *unescaped_buf_size, 0, | |
1875 | FF_INPUT_BUFFER_PADDING_SIZE); | |
1876 | ||
1877 | av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %"PTRDIFF_SPECIFIER" bytes\n", | |
1878 | (buf_end - *buf_ptr) - (dst - s->buffer)); | |
1879 | } else if (start_code == SOS && s->ls) { | |
1880 | const uint8_t *src = *buf_ptr; | |
1881 | uint8_t *dst = s->buffer; | |
1882 | int bit_count = 0; | |
1883 | int t = 0, b = 0; | |
1884 | PutBitContext pb; | |
1885 | ||
1886 | /* find marker */ | |
1887 | while (src + t < buf_end) { | |
1888 | uint8_t x = src[t++]; | |
1889 | if (x == 0xff) { | |
1890 | while ((src + t < buf_end) && x == 0xff) | |
1891 | x = src[t++]; | |
1892 | if (x & 0x80) { | |
1893 | t -= FFMIN(2, t); | |
1894 | break; | |
1895 | } | |
1896 | } | |
1897 | } | |
1898 | bit_count = t * 8; | |
1899 | init_put_bits(&pb, dst, t); | |
1900 | ||
1901 | /* unescape bitstream */ | |
1902 | while (b < t) { | |
1903 | uint8_t x = src[b++]; | |
1904 | put_bits(&pb, 8, x); | |
1905 | if (x == 0xFF) { | |
1906 | x = src[b++]; | |
1907 | put_bits(&pb, 7, x); | |
1908 | bit_count--; | |
1909 | } | |
1910 | } | |
1911 | flush_put_bits(&pb); | |
1912 | ||
1913 | *unescaped_buf_ptr = dst; | |
1914 | *unescaped_buf_size = (bit_count + 7) >> 3; | |
1915 | memset(s->buffer + *unescaped_buf_size, 0, | |
1916 | FF_INPUT_BUFFER_PADDING_SIZE); | |
1917 | } else { | |
1918 | *unescaped_buf_ptr = *buf_ptr; | |
1919 | *unescaped_buf_size = buf_end - *buf_ptr; | |
1920 | } | |
1921 | ||
1922 | return start_code; | |
1923 | } | |
1924 | ||
1925 | int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, | |
1926 | AVPacket *avpkt) | |
1927 | { | |
1928 | AVFrame *frame = data; | |
1929 | const uint8_t *buf = avpkt->data; | |
1930 | int buf_size = avpkt->size; | |
1931 | MJpegDecodeContext *s = avctx->priv_data; | |
1932 | const uint8_t *buf_end, *buf_ptr; | |
1933 | const uint8_t *unescaped_buf_ptr; | |
1934 | int hshift, vshift; | |
1935 | int unescaped_buf_size; | |
1936 | int start_code; | |
1937 | int i, index; | |
1938 | int ret = 0; | |
1939 | int is16bit; | |
1940 | ||
1941 | av_dict_free(&s->exif_metadata); | |
1942 | av_freep(&s->stereo3d); | |
1943 | s->adobe_transform = -1; | |
1944 | ||
1945 | buf_ptr = buf; | |
1946 | buf_end = buf + buf_size; | |
1947 | while (buf_ptr < buf_end) { | |
1948 | /* find start next marker */ | |
1949 | start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end, | |
1950 | &unescaped_buf_ptr, | |
1951 | &unescaped_buf_size); | |
1952 | /* EOF */ | |
1953 | if (start_code < 0) { | |
1954 | break; | |
1955 | } else if (unescaped_buf_size > INT_MAX / 8) { | |
1956 | av_log(avctx, AV_LOG_ERROR, | |
1957 | "MJPEG packet 0x%x too big (%d/%d), corrupt data?\n", | |
1958 | start_code, unescaped_buf_size, buf_size); | |
1959 | return AVERROR_INVALIDDATA; | |
1960 | } | |
1961 | av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%"PTRDIFF_SPECIFIER"\n", | |
1962 | start_code, buf_end - buf_ptr); | |
1963 | ||
1964 | ret = init_get_bits8(&s->gb, unescaped_buf_ptr, unescaped_buf_size); | |
1965 | ||
1966 | if (ret < 0) { | |
1967 | av_log(avctx, AV_LOG_ERROR, "invalid buffer\n"); | |
1968 | goto fail; | |
1969 | } | |
1970 | ||
1971 | s->start_code = start_code; | |
1972 | if (s->avctx->debug & FF_DEBUG_STARTCODE) | |
1973 | av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code); | |
1974 | ||
1975 | /* process markers */ | |
1976 | if (start_code >= 0xd0 && start_code <= 0xd7) | |
1977 | av_log(avctx, AV_LOG_DEBUG, | |
1978 | "restart marker: %d\n", start_code & 0x0f); | |
1979 | /* APP fields */ | |
1980 | else if (start_code >= APP0 && start_code <= APP15) | |
1981 | mjpeg_decode_app(s); | |
1982 | /* Comment */ | |
1983 | else if (start_code == COM) | |
1984 | mjpeg_decode_com(s); | |
1985 | ||
1986 | ret = -1; | |
1987 | ||
1988 | if (!CONFIG_JPEGLS_DECODER && | |
1989 | (start_code == SOF48 || start_code == LSE)) { | |
1990 | av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n"); | |
1991 | return AVERROR(ENOSYS); | |
1992 | } | |
1993 | ||
1994 | switch (start_code) { | |
1995 | case SOI: | |
1996 | s->restart_interval = 0; | |
1997 | s->restart_count = 0; | |
1998 | /* nothing to do on SOI */ | |
1999 | break; | |
2000 | case DQT: | |
2001 | ff_mjpeg_decode_dqt(s); | |
2002 | break; | |
2003 | case DHT: | |
2004 | if ((ret = ff_mjpeg_decode_dht(s)) < 0) { | |
2005 | av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n"); | |
2006 | goto fail; | |
2007 | } | |
2008 | break; | |
2009 | case SOF0: | |
2010 | case SOF1: | |
2011 | s->lossless = 0; | |
2012 | s->ls = 0; | |
2013 | s->progressive = 0; | |
2014 | if ((ret = ff_mjpeg_decode_sof(s)) < 0) | |
2015 | goto fail; | |
2016 | break; | |
2017 | case SOF2: | |
2018 | s->lossless = 0; | |
2019 | s->ls = 0; | |
2020 | s->progressive = 1; | |
2021 | if ((ret = ff_mjpeg_decode_sof(s)) < 0) | |
2022 | goto fail; | |
2023 | break; | |
2024 | case SOF3: | |
2025 | s->lossless = 1; | |
2026 | s->ls = 0; | |
2027 | s->progressive = 0; | |
2028 | if ((ret = ff_mjpeg_decode_sof(s)) < 0) | |
2029 | goto fail; | |
2030 | break; | |
2031 | case SOF48: | |
2032 | s->lossless = 1; | |
2033 | s->ls = 1; | |
2034 | s->progressive = 0; | |
2035 | if ((ret = ff_mjpeg_decode_sof(s)) < 0) | |
2036 | goto fail; | |
2037 | break; | |
2038 | case LSE: | |
2039 | if (!CONFIG_JPEGLS_DECODER || | |
2040 | (ret = ff_jpegls_decode_lse(s)) < 0) | |
2041 | goto fail; | |
2042 | break; | |
2043 | case EOI: | |
2044 | eoi_parser: | |
2045 | s->cur_scan = 0; | |
2046 | if (!s->got_picture) { | |
2047 | av_log(avctx, AV_LOG_WARNING, | |
2048 | "Found EOI before any SOF, ignoring\n"); | |
2049 | break; | |
2050 | } | |
2051 | if (s->interlaced) { | |
2052 | s->bottom_field ^= 1; | |
2053 | /* if not bottom field, do not output image yet */ | |
2054 | if (s->bottom_field == !s->interlace_polarity) | |
2055 | break; | |
2056 | } | |
2057 | if ((ret = av_frame_ref(frame, s->picture_ptr)) < 0) | |
2058 | return ret; | |
2059 | *got_frame = 1; | |
2060 | s->got_picture = 0; | |
2061 | ||
2062 | if (!s->lossless) { | |
2063 | int qp = FFMAX3(s->qscale[0], | |
2064 | s->qscale[1], | |
2065 | s->qscale[2]); | |
2066 | int qpw = (s->width + 15) / 16; | |
2067 | AVBufferRef *qp_table_buf = av_buffer_alloc(qpw); | |
2068 | if (qp_table_buf) { | |
2069 | memset(qp_table_buf->data, qp, qpw); | |
2070 | av_frame_set_qp_table(data, qp_table_buf, 0, FF_QSCALE_TYPE_MPEG1); | |
2071 | } | |
2072 | ||
2073 | if(avctx->debug & FF_DEBUG_QP) | |
2074 | av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", qp); | |
2075 | } | |
2076 | ||
2077 | goto the_end; | |
2078 | case SOS: | |
2079 | s->cur_scan++; | |
2080 | if ((ret = ff_mjpeg_decode_sos(s, NULL, 0, NULL)) < 0 && | |
2081 | (avctx->err_recognition & AV_EF_EXPLODE)) | |
2082 | goto fail; | |
2083 | break; | |
2084 | case DRI: | |
2085 | mjpeg_decode_dri(s); | |
2086 | break; | |
2087 | case SOF5: | |
2088 | case SOF6: | |
2089 | case SOF7: | |
2090 | case SOF9: | |
2091 | case SOF10: | |
2092 | case SOF11: | |
2093 | case SOF13: | |
2094 | case SOF14: | |
2095 | case SOF15: | |
2096 | case JPG: | |
2097 | av_log(avctx, AV_LOG_ERROR, | |
2098 | "mjpeg: unsupported coding type (%x)\n", start_code); | |
2099 | break; | |
2100 | } | |
2101 | ||
2102 | /* eof process start code */ | |
2103 | buf_ptr += (get_bits_count(&s->gb) + 7) / 8; | |
2104 | av_log(avctx, AV_LOG_DEBUG, | |
2105 | "marker parser used %d bytes (%d bits)\n", | |
2106 | (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb)); | |
2107 | } | |
2108 | if (s->got_picture && s->cur_scan) { | |
2109 | av_log(avctx, AV_LOG_WARNING, "EOI missing, emulating\n"); | |
2110 | goto eoi_parser; | |
2111 | } | |
2112 | av_log(avctx, AV_LOG_FATAL, "No JPEG data found in image\n"); | |
2113 | return AVERROR_INVALIDDATA; | |
2114 | fail: | |
2115 | s->got_picture = 0; | |
2116 | return ret; | |
2117 | the_end: | |
2118 | ||
2119 | is16bit = av_pix_fmt_desc_get(s->avctx->pix_fmt)->comp[0].step_minus1; | |
2120 | ||
2121 | if (s->upscale_h) { | |
2122 | int p; | |
2123 | av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P || | |
2124 | avctx->pix_fmt == AV_PIX_FMT_YUV444P || | |
2125 | avctx->pix_fmt == AV_PIX_FMT_YUVJ440P || | |
2126 | avctx->pix_fmt == AV_PIX_FMT_YUV440P || | |
2127 | avctx->pix_fmt == AV_PIX_FMT_YUVA444P || | |
2128 | avctx->pix_fmt == AV_PIX_FMT_YUVJ420P || | |
2129 | avctx->pix_fmt == AV_PIX_FMT_YUV420P || | |
2130 | avctx->pix_fmt == AV_PIX_FMT_YUV420P16|| | |
f6fa7814 DM |
2131 | avctx->pix_fmt == AV_PIX_FMT_YUVA420P || |
2132 | avctx->pix_fmt == AV_PIX_FMT_YUVA420P16|| | |
2133 | avctx->pix_fmt == AV_PIX_FMT_GBRP || | |
2ba45a60 DM |
2134 | avctx->pix_fmt == AV_PIX_FMT_GBRAP |
2135 | ); | |
2136 | avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift); | |
2137 | for (p = 0; p<4; p++) { | |
2138 | uint8_t *line = s->picture_ptr->data[p]; | |
2139 | int w = s->width; | |
f6fa7814 | 2140 | int h = s->height; |
2ba45a60 DM |
2141 | if (!(s->upscale_h & (1<<p))) |
2142 | continue; | |
f6fa7814 DM |
2143 | if (p==1 || p==2) { |
2144 | w = FF_CEIL_RSHIFT(w, hshift); | |
2145 | h = FF_CEIL_RSHIFT(h, vshift); | |
2146 | } | |
2147 | if (s->upscale_v & (1<<p)) | |
2148 | h = (h+1)>>1; | |
2ba45a60 | 2149 | av_assert0(w > 0); |
f6fa7814 | 2150 | for (i = 0; i < h; i++) { |
2ba45a60 DM |
2151 | if (is16bit) ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 2]; |
2152 | else line[w - 1] = line[(w - 1) / 2]; | |
2153 | for (index = w - 2; index > 0; index--) { | |
2154 | if (is16bit) | |
2155 | ((uint16_t*)line)[index] = (((uint16_t*)line)[index / 2] + ((uint16_t*)line)[(index + 1) / 2]) >> 1; | |
2156 | else | |
2157 | line[index] = (line[index / 2] + line[(index + 1) / 2]) >> 1; | |
2158 | } | |
2159 | line += s->linesize[p]; | |
2160 | } | |
2161 | } | |
2162 | } | |
2163 | if (s->upscale_v) { | |
2164 | int p; | |
2165 | av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P || | |
2166 | avctx->pix_fmt == AV_PIX_FMT_YUV444P || | |
2167 | avctx->pix_fmt == AV_PIX_FMT_YUVJ422P || | |
2168 | avctx->pix_fmt == AV_PIX_FMT_YUV422P || | |
f6fa7814 DM |
2169 | avctx->pix_fmt == AV_PIX_FMT_YUVJ420P || |
2170 | avctx->pix_fmt == AV_PIX_FMT_YUV420P || | |
2171 | avctx->pix_fmt == AV_PIX_FMT_YUV440P || | |
2172 | avctx->pix_fmt == AV_PIX_FMT_YUVJ440P || | |
2ba45a60 | 2173 | avctx->pix_fmt == AV_PIX_FMT_YUVA444P || |
f6fa7814 DM |
2174 | avctx->pix_fmt == AV_PIX_FMT_YUVA420P || |
2175 | avctx->pix_fmt == AV_PIX_FMT_YUVA420P16|| | |
2176 | avctx->pix_fmt == AV_PIX_FMT_GBRP || | |
2ba45a60 DM |
2177 | avctx->pix_fmt == AV_PIX_FMT_GBRAP |
2178 | ); | |
2179 | avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift); | |
2180 | for (p = 0; p < 4; p++) { | |
f6fa7814 | 2181 | uint8_t *dst; |
2ba45a60 | 2182 | int w = s->width; |
f6fa7814 | 2183 | int h = s->height; |
2ba45a60 DM |
2184 | if (!(s->upscale_v & (1<<p))) |
2185 | continue; | |
f6fa7814 | 2186 | if (p==1 || p==2) { |
2ba45a60 | 2187 | w = FF_CEIL_RSHIFT(w, hshift); |
f6fa7814 DM |
2188 | h = FF_CEIL_RSHIFT(h, vshift); |
2189 | } | |
2190 | dst = &((uint8_t *)s->picture_ptr->data[p])[(h - 1) * s->linesize[p]]; | |
2191 | for (i = h - 1; i; i--) { | |
2ba45a60 DM |
2192 | uint8_t *src1 = &((uint8_t *)s->picture_ptr->data[p])[i / 2 * s->linesize[p]]; |
2193 | uint8_t *src2 = &((uint8_t *)s->picture_ptr->data[p])[(i + 1) / 2 * s->linesize[p]]; | |
f6fa7814 | 2194 | if (src1 == src2 || i == h - 1) { |
2ba45a60 DM |
2195 | memcpy(dst, src1, w); |
2196 | } else { | |
2197 | for (index = 0; index < w; index++) | |
2198 | dst[index] = (src1[index] + src2[index]) >> 1; | |
2199 | } | |
2200 | dst -= s->linesize[p]; | |
2201 | } | |
2202 | } | |
2203 | } | |
2204 | if (s->flipped) { | |
2205 | int j; | |
2206 | avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift); | |
2207 | for (index=0; index<4; index++) { | |
2208 | uint8_t *dst = s->picture_ptr->data[index]; | |
2209 | int w = s->picture_ptr->width; | |
2210 | int h = s->picture_ptr->height; | |
2211 | if(index && index<3){ | |
2212 | w = FF_CEIL_RSHIFT(w, hshift); | |
2213 | h = FF_CEIL_RSHIFT(h, vshift); | |
2214 | } | |
2215 | if(dst){ | |
2216 | uint8_t *dst2 = dst + s->picture_ptr->linesize[index]*(h-1); | |
2217 | for (i=0; i<h/2; i++) { | |
2218 | for (j=0; j<w; j++) | |
2219 | FFSWAP(int, dst[j], dst2[j]); | |
2220 | dst += s->picture_ptr->linesize[index]; | |
2221 | dst2 -= s->picture_ptr->linesize[index]; | |
2222 | } | |
2223 | } | |
2224 | } | |
2225 | } | |
2226 | if (s->adobe_transform == 0 && s->avctx->pix_fmt == AV_PIX_FMT_GBRAP) { | |
2227 | int w = s->picture_ptr->width; | |
2228 | int h = s->picture_ptr->height; | |
2229 | for (i=0; i<h; i++) { | |
2230 | int j; | |
2231 | uint8_t *dst[4]; | |
2232 | for (index=0; index<4; index++) { | |
2233 | dst[index] = s->picture_ptr->data[index] | |
2234 | + s->picture_ptr->linesize[index]*i; | |
2235 | } | |
2236 | for (j=0; j<w; j++) { | |
2237 | int k = dst[3][j]; | |
2238 | int r = dst[0][j] * k; | |
2239 | int g = dst[1][j] * k; | |
2240 | int b = dst[2][j] * k; | |
2241 | dst[0][j] = g*257 >> 16; | |
2242 | dst[1][j] = b*257 >> 16; | |
2243 | dst[2][j] = r*257 >> 16; | |
2244 | dst[3][j] = 255; | |
2245 | } | |
2246 | } | |
2247 | } | |
2248 | if (s->adobe_transform == 2 && s->avctx->pix_fmt == AV_PIX_FMT_YUVA444P) { | |
2249 | int w = s->picture_ptr->width; | |
2250 | int h = s->picture_ptr->height; | |
2251 | for (i=0; i<h; i++) { | |
2252 | int j; | |
2253 | uint8_t *dst[4]; | |
2254 | for (index=0; index<4; index++) { | |
2255 | dst[index] = s->picture_ptr->data[index] | |
2256 | + s->picture_ptr->linesize[index]*i; | |
2257 | } | |
2258 | for (j=0; j<w; j++) { | |
2259 | int k = dst[3][j]; | |
2260 | int r = (255 - dst[0][j]) * k; | |
2261 | int g = (128 - dst[1][j]) * k; | |
2262 | int b = (128 - dst[2][j]) * k; | |
2263 | dst[0][j] = r*257 >> 16; | |
2264 | dst[1][j] = (g*257 >> 16) + 128; | |
2265 | dst[2][j] = (b*257 >> 16) + 128; | |
2266 | dst[3][j] = 255; | |
2267 | } | |
2268 | } | |
2269 | } | |
2270 | ||
2271 | if (s->stereo3d) { | |
2272 | AVStereo3D *stereo = av_stereo3d_create_side_data(data); | |
2273 | if (stereo) { | |
2274 | stereo->type = s->stereo3d->type; | |
2275 | stereo->flags = s->stereo3d->flags; | |
2276 | } | |
2277 | av_freep(&s->stereo3d); | |
2278 | } | |
2279 | ||
2280 | av_dict_copy(avpriv_frame_get_metadatap(data), s->exif_metadata, 0); | |
2281 | av_dict_free(&s->exif_metadata); | |
2282 | ||
2283 | av_log(avctx, AV_LOG_DEBUG, "decode frame unused %"PTRDIFF_SPECIFIER" bytes\n", | |
2284 | buf_end - buf_ptr); | |
2285 | // return buf_end - buf_ptr; | |
2286 | return buf_ptr - buf; | |
2287 | } | |
2288 | ||
2289 | av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx) | |
2290 | { | |
2291 | MJpegDecodeContext *s = avctx->priv_data; | |
2292 | int i, j; | |
2293 | ||
2294 | if (s->interlaced && s->bottom_field == !s->interlace_polarity && s->got_picture && !avctx->frame_number) { | |
2295 | av_log(avctx, AV_LOG_INFO, "Single field\n"); | |
2296 | } | |
2297 | ||
2298 | if (s->picture) { | |
2299 | av_frame_free(&s->picture); | |
2300 | s->picture_ptr = NULL; | |
2301 | } else if (s->picture_ptr) | |
2302 | av_frame_unref(s->picture_ptr); | |
2303 | ||
2304 | av_freep(&s->buffer); | |
2305 | av_freep(&s->stereo3d); | |
2306 | av_freep(&s->ljpeg_buffer); | |
2307 | s->ljpeg_buffer_size = 0; | |
2308 | ||
2309 | for (i = 0; i < 3; i++) { | |
2310 | for (j = 0; j < 4; j++) | |
2311 | ff_free_vlc(&s->vlcs[i][j]); | |
2312 | } | |
2313 | for (i = 0; i < MAX_COMPONENTS; i++) { | |
2314 | av_freep(&s->blocks[i]); | |
2315 | av_freep(&s->last_nnz[i]); | |
2316 | } | |
2317 | av_dict_free(&s->exif_metadata); | |
2318 | return 0; | |
2319 | } | |
2320 | ||
2321 | static void decode_flush(AVCodecContext *avctx) | |
2322 | { | |
2323 | MJpegDecodeContext *s = avctx->priv_data; | |
2324 | s->got_picture = 0; | |
2325 | } | |
2326 | ||
2327 | #if CONFIG_MJPEG_DECODER | |
2328 | #define OFFSET(x) offsetof(MJpegDecodeContext, x) | |
2329 | #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM | |
2330 | static const AVOption options[] = { | |
2331 | { "extern_huff", "Use external huffman table.", | |
2332 | OFFSET(extern_huff), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VD }, | |
2333 | { NULL }, | |
2334 | }; | |
2335 | ||
2336 | static const AVClass mjpegdec_class = { | |
2337 | .class_name = "MJPEG decoder", | |
2338 | .item_name = av_default_item_name, | |
2339 | .option = options, | |
2340 | .version = LIBAVUTIL_VERSION_INT, | |
2341 | }; | |
2342 | ||
2343 | AVCodec ff_mjpeg_decoder = { | |
2344 | .name = "mjpeg", | |
2345 | .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), | |
2346 | .type = AVMEDIA_TYPE_VIDEO, | |
2347 | .id = AV_CODEC_ID_MJPEG, | |
2348 | .priv_data_size = sizeof(MJpegDecodeContext), | |
2349 | .init = ff_mjpeg_decode_init, | |
2350 | .close = ff_mjpeg_decode_end, | |
2351 | .decode = ff_mjpeg_decode_frame, | |
2352 | .flush = decode_flush, | |
2353 | .capabilities = CODEC_CAP_DR1, | |
2354 | .max_lowres = 3, | |
2355 | .priv_class = &mjpegdec_class, | |
2356 | }; | |
2357 | #endif | |
2358 | #if CONFIG_THP_DECODER | |
2359 | AVCodec ff_thp_decoder = { | |
2360 | .name = "thp", | |
2361 | .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"), | |
2362 | .type = AVMEDIA_TYPE_VIDEO, | |
2363 | .id = AV_CODEC_ID_THP, | |
2364 | .priv_data_size = sizeof(MJpegDecodeContext), | |
2365 | .init = ff_mjpeg_decode_init, | |
2366 | .close = ff_mjpeg_decode_end, | |
2367 | .decode = ff_mjpeg_decode_frame, | |
2368 | .flush = decode_flush, | |
2369 | .capabilities = CODEC_CAP_DR1, | |
2370 | .max_lowres = 3, | |
2371 | }; | |
2372 | #endif |