3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 * Copyright (c) 2003 Alex Beregszaszi
5 * Copyright (c) 2003-2004 Michael Niedermayer
7 * Support for external huffman table, various fixes (AVID workaround),
8 * aspecting, new decode_frame mechanism and apple mjpeg-b support
11 * This file is part of FFmpeg.
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.
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.
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
33 #include "libavutil/imgutils.h"
34 #include "libavutil/avassert.h"
35 #include "libavutil/opt.h"
38 #include "copy_block.h"
41 #include "jpegtables.h"
44 #include "jpeglsdec.h"
48 #include "bytestream.h"
51 static int build_vlc(VLC *vlc, const uint8_t *bits_table,
52 const uint8_t *val_table, int nb_codes,
53 int use_static, int is_ac)
55 uint8_t huff_size[256] = { 0 };
56 uint16_t huff_code[256];
57 uint16_t huff_sym[256];
60 av_assert0(nb_codes <= 256);
62 ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
64 for (i = 0; i < 256; i++)
65 huff_sym[i] = i + 16 * is_ac;
68 huff_sym[0] = 16 * 256;
70 return ff_init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
71 huff_code, 2, 2, huff_sym, 2, 2, use_static);
74 static void build_basic_mjpeg_vlc(MJpegDecodeContext *s)
76 build_vlc(&s->vlcs[0][0], avpriv_mjpeg_bits_dc_luminance,
77 avpriv_mjpeg_val_dc, 12, 0, 0);
78 build_vlc(&s->vlcs[0][1], avpriv_mjpeg_bits_dc_chrominance,
79 avpriv_mjpeg_val_dc, 12, 0, 0);
80 build_vlc(&s->vlcs[1][0], avpriv_mjpeg_bits_ac_luminance,
81 avpriv_mjpeg_val_ac_luminance, 251, 0, 1);
82 build_vlc(&s->vlcs[1][1], avpriv_mjpeg_bits_ac_chrominance,
83 avpriv_mjpeg_val_ac_chrominance, 251, 0, 1);
84 build_vlc(&s->vlcs[2][0], avpriv_mjpeg_bits_ac_luminance,
85 avpriv_mjpeg_val_ac_luminance, 251, 0, 0);
86 build_vlc(&s->vlcs[2][1], avpriv_mjpeg_bits_ac_chrominance,
87 avpriv_mjpeg_val_ac_chrominance, 251, 0, 0);
90 static void parse_avid(MJpegDecodeContext *s, uint8_t *buf, int len)
93 if (len > 14 && buf[12] == 1) /* 1 - NTSC */
94 s->interlace_polarity = 1;
95 if (len > 14 && buf[12] == 2) /* 2 - PAL */
96 s->interlace_polarity = 0;
97 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
98 av_log(s->avctx, AV_LOG_INFO, "AVID: len:%d %d\n", len, len > 14 ? buf[12] : -1);
101 av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
103 MJpegDecodeContext *s = avctx->priv_data;
105 if (!s->picture_ptr) {
106 s->picture = av_frame_alloc();
108 return AVERROR(ENOMEM);
109 s->picture_ptr = s->picture;
113 ff_blockdsp_init(&s->bdsp, avctx);
114 ff_hpeldsp_init(&s->hdsp, avctx->flags);
115 ff_idctdsp_init(&s->idsp, avctx);
116 ff_init_scantable(s->idsp.idct_permutation, &s->scantable,
121 s->first_picture = 1;
123 s->org_height = avctx->coded_height;
124 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
125 avctx->colorspace = AVCOL_SPC_BT470BG;
127 build_basic_mjpeg_vlc(s);
129 if (s->extern_huff) {
130 av_log(avctx, AV_LOG_INFO, "using external huffman table\n");
131 init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8);
132 if (ff_mjpeg_decode_dht(s)) {
133 av_log(avctx, AV_LOG_ERROR,
134 "error using external huffman table, switching back to internal\n");
135 build_basic_mjpeg_vlc(s);
138 if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
139 s->interlace_polarity = 1; /* bottom field first */
140 av_log(avctx, AV_LOG_DEBUG, "bottom field first\n");
141 } else if (avctx->field_order == AV_FIELD_UNKNOWN) {
142 if (avctx->codec_tag == AV_RL32("MJPG"))
143 s->interlace_polarity = 1;
146 if ( avctx->extradata_size > 8
147 && AV_RL32(avctx->extradata) == 0x2C
148 && AV_RL32(avctx->extradata+4) == 0x18) {
149 parse_avid(s, avctx->extradata, avctx->extradata_size);
152 if (avctx->codec->id == AV_CODEC_ID_AMV)
159 /* quantize tables */
160 int ff_mjpeg_decode_dqt(MJpegDecodeContext *s)
162 int len, index, i, j;
164 len = get_bits(&s->gb, 16) - 2;
166 if (8*len > get_bits_left(&s->gb)) {
167 av_log(s->avctx, AV_LOG_ERROR, "dqt: len %d is too large\n", len);
168 return AVERROR_INVALIDDATA;
172 int pr = get_bits(&s->gb, 4);
174 av_log(s->avctx, AV_LOG_ERROR, "dqt: invalid precision\n");
175 return AVERROR_INVALIDDATA;
177 index = get_bits(&s->gb, 4);
180 av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index);
181 /* read quant table */
182 for (i = 0; i < 64; i++) {
183 j = s->scantable.permutated[i];
184 s->quant_matrixes[index][j] = get_bits(&s->gb, pr ? 16 : 8);
187 // XXX FIXME finetune, and perhaps add dc too
188 s->qscale[index] = FFMAX(s->quant_matrixes[index][s->scantable.permutated[1]],
189 s->quant_matrixes[index][s->scantable.permutated[8]]) >> 1;
190 av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n",
191 index, s->qscale[index]);
192 len -= 1 + 64 * (1+pr);
197 /* decode huffman tables and build VLC decoders */
198 int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
200 int len, index, i, class, n, v, code_max;
201 uint8_t bits_table[17];
202 uint8_t val_table[256];
205 len = get_bits(&s->gb, 16) - 2;
207 if (8*len > get_bits_left(&s->gb)) {
208 av_log(s->avctx, AV_LOG_ERROR, "dht: len %d is too large\n", len);
209 return AVERROR_INVALIDDATA;
214 return AVERROR_INVALIDDATA;
215 class = get_bits(&s->gb, 4);
217 return AVERROR_INVALIDDATA;
218 index = get_bits(&s->gb, 4);
220 return AVERROR_INVALIDDATA;
222 for (i = 1; i <= 16; i++) {
223 bits_table[i] = get_bits(&s->gb, 8);
227 if (len < n || n > 256)
228 return AVERROR_INVALIDDATA;
231 for (i = 0; i < n; i++) {
232 v = get_bits(&s->gb, 8);
239 /* build VLC and flush previous vlc if present */
240 ff_free_vlc(&s->vlcs[class][index]);
241 av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
242 class, index, code_max + 1);
243 if ((ret = build_vlc(&s->vlcs[class][index], bits_table, val_table,
244 code_max + 1, 0, class > 0)) < 0)
248 ff_free_vlc(&s->vlcs[2][index]);
249 if ((ret = build_vlc(&s->vlcs[2][index], bits_table, val_table,
250 code_max + 1, 0, 0)) < 0)
257 int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
259 int len, nb_components, i, width, height, bits, ret;
261 int h_count[MAX_COMPONENTS] = { 0 };
262 int v_count[MAX_COMPONENTS] = { 0 };
265 memset(s->upscale_h, 0, sizeof(s->upscale_h));
266 memset(s->upscale_v, 0, sizeof(s->upscale_v));
268 /* XXX: verify len field validity */
269 len = get_bits(&s->gb, 16);
270 s->avctx->bits_per_raw_sample =
271 bits = get_bits(&s->gb, 8);
273 if (bits > 16 || bits < 1) {
274 av_log(s->avctx, AV_LOG_ERROR, "bits %d is invalid\n", bits);
275 return AVERROR_INVALIDDATA;
280 if (bits == 9 && !s->pegasus_rct)
281 s->rct = 1; // FIXME ugly
283 if(s->lossless && s->avctx->lowres){
284 av_log(s->avctx, AV_LOG_ERROR, "lowres is not possible with lossless jpeg\n");
288 height = get_bits(&s->gb, 16);
289 width = get_bits(&s->gb, 16);
291 // HACK for odd_height.mov
292 if (s->interlaced && s->width == width && s->height == height + 1)
295 av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
296 if (av_image_check_size(width, height, 0, s->avctx))
297 return AVERROR_INVALIDDATA;
299 nb_components = get_bits(&s->gb, 8);
300 if (nb_components <= 0 ||
301 nb_components > MAX_COMPONENTS)
303 if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
304 if (nb_components != s->nb_components) {
305 av_log(s->avctx, AV_LOG_ERROR,
306 "nb_components changing in interlaced picture\n");
307 return AVERROR_INVALIDDATA;
310 if (s->ls && !(bits <= 8 || nb_components == 1)) {
311 avpriv_report_missing_feature(s->avctx,
312 "JPEG-LS that is not <= 8 "
313 "bits/component or 16-bit gray");
314 return AVERROR_PATCHWELCOME;
316 s->nb_components = nb_components;
319 for (i = 0; i < nb_components; i++) {
321 s->component_id[i] = get_bits(&s->gb, 8) - 1;
322 h_count[i] = get_bits(&s->gb, 4);
323 v_count[i] = get_bits(&s->gb, 4);
324 /* compute hmax and vmax (only used in interleaved case) */
325 if (h_count[i] > s->h_max)
326 s->h_max = h_count[i];
327 if (v_count[i] > s->v_max)
328 s->v_max = v_count[i];
329 s->quant_index[i] = get_bits(&s->gb, 8);
330 if (s->quant_index[i] >= 4) {
331 av_log(s->avctx, AV_LOG_ERROR, "quant_index is invalid\n");
332 return AVERROR_INVALIDDATA;
334 if (!h_count[i] || !v_count[i]) {
335 av_log(s->avctx, AV_LOG_ERROR,
336 "Invalid sampling factor in component %d %d:%d\n",
337 i, h_count[i], v_count[i]);
338 return AVERROR_INVALIDDATA;
341 av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n",
342 i, h_count[i], v_count[i],
343 s->component_id[i], s->quant_index[i]);
345 if ( nb_components == 4
346 && s->component_id[0] == 'C' - 1
347 && s->component_id[1] == 'M' - 1
348 && s->component_id[2] == 'Y' - 1
349 && s->component_id[3] == 'K' - 1)
350 s->adobe_transform = 0;
352 if (s->ls && (s->h_max > 1 || s->v_max > 1)) {
353 avpriv_report_missing_feature(s->avctx, "Subsampling in JPEG-LS");
354 return AVERROR_PATCHWELCOME;
358 /* if different size, realloc/alloc picture */
359 if (width != s->width || height != s->height || bits != s->bits ||
360 memcmp(s->h_count, h_count, sizeof(h_count)) ||
361 memcmp(s->v_count, v_count, sizeof(v_count))) {
366 memcpy(s->h_count, h_count, sizeof(h_count));
367 memcpy(s->v_count, v_count, sizeof(v_count));
371 /* test interlaced mode */
372 if (s->first_picture &&
373 (s->multiscope != 2 || s->avctx->time_base.den >= 25 * s->avctx->time_base.num) &&
374 s->org_height != 0 &&
375 s->height < ((s->org_height * 3) / 4)) {
377 s->bottom_field = s->interlace_polarity;
378 s->picture_ptr->interlaced_frame = 1;
379 s->picture_ptr->top_field_first = !s->interlace_polarity;
383 ret = ff_set_dimensions(s->avctx, width, height);
387 s->first_picture = 0;
390 if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
391 if (s->progressive) {
392 avpriv_request_sample(s->avctx, "progressively coded interlaced picture");
393 return AVERROR_INVALIDDATA;
396 if (s->v_max == 1 && s->h_max == 1 && s->lossless==1 && (nb_components==3 || nb_components==4))
398 else if (!s->lossless)
400 /* XXX: not complete test ! */
401 pix_fmt_id = ((unsigned)s->h_count[0] << 28) | (s->v_count[0] << 24) |
402 (s->h_count[1] << 20) | (s->v_count[1] << 16) |
403 (s->h_count[2] << 12) | (s->v_count[2] << 8) |
404 (s->h_count[3] << 4) | s->v_count[3];
405 av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id);
406 /* NOTE we do not allocate pictures large enough for the possible
407 * padding of h/v_count being 4 */
408 if (!(pix_fmt_id & 0xD0D0D0D0))
409 pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1;
410 if (!(pix_fmt_id & 0x0D0D0D0D))
411 pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1;
413 for (i = 0; i < 8; i++) {
414 int j = 6 + (i&1) - (i&6);
415 int is = (pix_fmt_id >> (4*i)) & 0xF;
416 int js = (pix_fmt_id >> (4*j)) & 0xF;
418 if (is == 1 && js != 2 && (i < 2 || i > 5))
419 js = (pix_fmt_id >> ( 8 + 4*(i&1))) & 0xF;
420 if (is == 1 && js != 2 && (i < 2 || i > 5))
421 js = (pix_fmt_id >> (16 + 4*(i&1))) & 0xF;
423 if (is == 1 && js == 2) {
424 if (i & 1) s->upscale_h[j/2] = 1;
425 else s->upscale_v[j/2] = 1;
429 switch (pix_fmt_id) {
432 s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_BGR48;
434 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
435 s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_GBRP : AV_PIX_FMT_GBRP16;
437 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
438 else s->avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
439 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
442 av_assert0(s->nb_components == 3);
446 s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_ABGR : AV_PIX_FMT_RGBA64;
448 if (s->adobe_transform == 0 && s->bits <= 8) {
449 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
451 s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_YUVA444P : AV_PIX_FMT_YUVA444P16;
452 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
455 av_assert0(s->nb_components == 4);
459 if (s->adobe_transform == 0 && s->bits <= 8) {
460 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
461 s->upscale_v[1] = s->upscale_v[2] = 1;
462 s->upscale_h[1] = s->upscale_h[2] = 1;
463 } else if (s->adobe_transform == 2 && s->bits <= 8) {
464 s->avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
465 s->upscale_v[1] = s->upscale_v[2] = 1;
466 s->upscale_h[1] = s->upscale_h[2] = 1;
467 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
469 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
470 else s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
471 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
473 av_assert0(s->nb_components == 4);
479 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
482 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
487 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
490 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
502 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
504 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
511 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
512 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
515 s->upscale_v[0] = s->upscale_v[1] = 1;
517 if (pix_fmt_id == 0x14111100)
518 s->upscale_v[1] = s->upscale_v[2] = 1;
519 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;
522 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
526 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
527 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
530 s->upscale_h[0] = s->upscale_h[1] = 1;
532 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
533 else s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
534 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
540 s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
541 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
542 s->upscale_h[1] = s->upscale_h[2] = 2;
546 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
549 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
554 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV420P : AV_PIX_FMT_YUVJ420P;
555 else s->avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
556 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
557 if (pix_fmt_id == 0x42111100) {
560 s->upscale_h[1] = s->upscale_h[2] = 1;
561 } else if (pix_fmt_id == 0x24111100) {
564 s->upscale_v[1] = s->upscale_v[2] = 1;
568 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV411P : AV_PIX_FMT_YUVJ411P;
571 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
575 av_log(s->avctx, AV_LOG_ERROR, "Unhandled pixel format 0x%x bits:%d\n", pix_fmt_id, s->bits);
576 memset(s->upscale_h, 0, sizeof(s->upscale_h));
577 memset(s->upscale_v, 0, sizeof(s->upscale_v));
578 return AVERROR_PATCHWELCOME;
580 if ((AV_RB32(s->upscale_h) || AV_RB32(s->upscale_v)) && s->avctx->lowres) {
581 av_log(s->avctx, AV_LOG_ERROR, "lowres not supported for weird subsampling\n");
582 return AVERROR_PATCHWELCOME;
585 memset(s->upscale_h, 0, sizeof(s->upscale_h));
586 memset(s->upscale_v, 0, sizeof(s->upscale_v));
587 if (s->nb_components == 3) {
588 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
589 } else if (s->nb_components != 1) {
590 av_log(s->avctx, AV_LOG_ERROR, "Unsupported number of components %d\n", s->nb_components);
591 return AVERROR_PATCHWELCOME;
592 } else if (s->palette_index && s->bits <= 8)
593 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
594 else if (s->bits <= 8)
595 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
597 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
600 s->pix_desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
602 av_log(s->avctx, AV_LOG_ERROR, "Could not get a pixel format descriptor.\n");
606 av_frame_unref(s->picture_ptr);
607 if (ff_get_buffer(s->avctx, s->picture_ptr, AV_GET_BUFFER_FLAG_REF) < 0)
609 s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
610 s->picture_ptr->key_frame = 1;
613 for (i = 0; i < 4; i++)
614 s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;
616 ff_dlog(s->avctx, "%d %d %d %d %d %d\n",
617 s->width, s->height, s->linesize[0], s->linesize[1],
618 s->interlaced, s->avctx->height);
620 if (len != (8 + (3 * nb_components)))
621 av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len);
624 if (s->rgb && !s->lossless && !s->ls) {
625 av_log(s->avctx, AV_LOG_ERROR, "Unsupported coding and pixel format combination\n");
626 return AVERROR_PATCHWELCOME;
629 /* totally blank picture as progressive JPEG will only add details to it */
630 if (s->progressive) {
631 int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8);
632 int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8);
633 for (i = 0; i < s->nb_components; i++) {
634 int size = bw * bh * s->h_count[i] * s->v_count[i];
635 av_freep(&s->blocks[i]);
636 av_freep(&s->last_nnz[i]);
637 s->blocks[i] = av_mallocz_array(size, sizeof(**s->blocks));
638 s->last_nnz[i] = av_mallocz_array(size, sizeof(**s->last_nnz));
639 if (!s->blocks[i] || !s->last_nnz[i])
640 return AVERROR(ENOMEM);
641 s->block_stride[i] = bw * s->h_count[i];
643 memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
648 static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index)
651 code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
652 if (code < 0 || code > 16) {
653 av_log(s->avctx, AV_LOG_WARNING,
654 "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n",
655 0, dc_index, &s->vlcs[0][dc_index]);
660 return get_xbits(&s->gb, code);
665 /* decode block and dequantize */
666 static int decode_block(MJpegDecodeContext *s, int16_t *block, int component,
667 int dc_index, int ac_index, int16_t *quant_matrix)
669 int code, i, j, level, val;
672 val = mjpeg_decode_dc(s, dc_index);
673 if (val == 0xfffff) {
674 av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
675 return AVERROR_INVALIDDATA;
677 val = val * quant_matrix[0] + s->last_dc[component];
678 val = FFMIN(val, 32767);
679 s->last_dc[component] = val;
683 {OPEN_READER(re, &s->gb);
685 UPDATE_CACHE(re, &s->gb);
686 GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2);
688 i += ((unsigned)code) >> 4;
691 if (code > MIN_CACHE_BITS - 16)
692 UPDATE_CACHE(re, &s->gb);
695 int cache = GET_CACHE(re, &s->gb);
696 int sign = (~cache) >> 31;
697 level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
700 LAST_SKIP_BITS(re, &s->gb, code);
703 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
704 return AVERROR_INVALIDDATA;
706 j = s->scantable.permutated[i];
707 block[j] = level * quant_matrix[j];
710 CLOSE_READER(re, &s->gb);}
715 static int decode_dc_progressive(MJpegDecodeContext *s, int16_t *block,
716 int component, int dc_index,
717 int16_t *quant_matrix, int Al)
720 s->bdsp.clear_block(block);
721 val = mjpeg_decode_dc(s, dc_index);
722 if (val == 0xfffff) {
723 av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
724 return AVERROR_INVALIDDATA;
726 val = (val * (quant_matrix[0] << Al)) + s->last_dc[component];
727 s->last_dc[component] = val;
732 /* decode block and dequantize - progressive JPEG version */
733 static int decode_block_progressive(MJpegDecodeContext *s, int16_t *block,
734 uint8_t *last_nnz, int ac_index,
735 int16_t *quant_matrix,
736 int ss, int se, int Al, int *EOBRUN)
738 int code, i, j, level, val, run;
746 OPEN_READER(re, &s->gb);
747 for (i = ss; ; i++) {
748 UPDATE_CACHE(re, &s->gb);
749 GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
751 run = ((unsigned) code) >> 4;
755 if (code > MIN_CACHE_BITS - 16)
756 UPDATE_CACHE(re, &s->gb);
759 int cache = GET_CACHE(re, &s->gb);
760 int sign = (~cache) >> 31;
761 level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
764 LAST_SKIP_BITS(re, &s->gb, code);
768 j = s->scantable.permutated[se];
769 block[j] = level * (quant_matrix[j] << Al);
772 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
773 return AVERROR_INVALIDDATA;
775 j = s->scantable.permutated[i];
776 block[j] = level * (quant_matrix[j] << Al);
778 if (run == 0xF) {// ZRL - skip 15 coefficients
781 av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
782 return AVERROR_INVALIDDATA;
787 UPDATE_CACHE(re, &s->gb);
788 val += NEG_USR32(GET_CACHE(re, &s->gb), run);
789 LAST_SKIP_BITS(re, &s->gb, run);
796 CLOSE_READER(re, &s->gb);
805 #define REFINE_BIT(j) { \
806 UPDATE_CACHE(re, &s->gb); \
807 sign = block[j] >> 15; \
808 block[j] += SHOW_UBITS(re, &s->gb, 1) * \
809 ((quant_matrix[j] ^ sign) - sign) << Al; \
810 LAST_SKIP_BITS(re, &s->gb, 1); \
818 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \
823 j = s->scantable.permutated[i]; \
826 else if (run-- == 0) \
830 /* decode block and dequantize - progressive JPEG refinement pass */
831 static int decode_block_refinement(MJpegDecodeContext *s, int16_t *block,
833 int ac_index, int16_t *quant_matrix,
834 int ss, int se, int Al, int *EOBRUN)
836 int code, i = ss, j, sign, val, run;
837 int last = FFMIN(se, *last_nnz);
839 OPEN_READER(re, &s->gb);
844 UPDATE_CACHE(re, &s->gb);
845 GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
848 run = ((unsigned) code) >> 4;
849 UPDATE_CACHE(re, &s->gb);
850 val = SHOW_UBITS(re, &s->gb, 1);
851 LAST_SKIP_BITS(re, &s->gb, 1);
853 j = s->scantable.permutated[i];
855 block[j] = ((quant_matrix[j] << Al) ^ val) - val;
859 CLOSE_READER(re, &s->gb);
863 run = ((unsigned) code) >> 4;
870 UPDATE_CACHE(re, &s->gb);
871 run += SHOW_UBITS(re, &s->gb, val);
872 LAST_SKIP_BITS(re, &s->gb, val);
884 for (; i <= last; i++) {
885 j = s->scantable.permutated[i];
889 CLOSE_READER(re, &s->gb);
896 static int handle_rstn(MJpegDecodeContext *s, int nb_components)
901 if (s->restart_interval) {
903 if(s->restart_count == 0 && s->avctx->codec_id == AV_CODEC_ID_THP){
904 align_get_bits(&s->gb);
905 for (i = 0; i < nb_components; i++) /* reset dc */
906 s->last_dc[i] = (4 << s->bits);
909 i = 8 + ((-get_bits_count(&s->gb)) & 7);
911 if (s->restart_count == 0) {
912 if( show_bits(&s->gb, i) == (1 << i) - 1
913 || show_bits(&s->gb, i) == 0xFF) {
914 int pos = get_bits_count(&s->gb);
915 align_get_bits(&s->gb);
916 while (get_bits_left(&s->gb) >= 8 && show_bits(&s->gb, 8) == 0xFF)
917 skip_bits(&s->gb, 8);
918 if (get_bits_left(&s->gb) >= 8 && (get_bits(&s->gb, 8) & 0xF8) == 0xD0) {
919 for (i = 0; i < nb_components; i++) /* reset dc */
920 s->last_dc[i] = (4 << s->bits);
923 skip_bits_long(&s->gb, pos - get_bits_count(&s->gb));
930 static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int predictor, int point_transform)
933 uint16_t (*buffer)[4];
934 int left[4], top[4], topleft[4];
935 const int linesize = s->linesize[0];
936 const int mask = ((1 << s->bits) - 1) << point_transform;
940 if (s->nb_components != 3 && s->nb_components != 4)
941 return AVERROR_INVALIDDATA;
942 if (s->v_max != 1 || s->h_max != 1 || !s->lossless)
943 return AVERROR_INVALIDDATA;
946 s->restart_count = s->restart_interval;
948 av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size,
949 (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
950 buffer = s->ljpeg_buffer;
952 for (i = 0; i < 4; i++)
953 buffer[0][i] = 1 << (s->bits - 1);
955 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
956 uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y);
958 if (s->interlaced && s->bottom_field)
959 ptr += linesize >> 1;
961 for (i = 0; i < 4; i++)
962 top[i] = left[i] = topleft[i] = buffer[0][i];
964 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
965 int modified_predictor = predictor;
967 if (s->restart_interval && !s->restart_count){
968 s->restart_count = s->restart_interval;
972 top[i] = left[i]= topleft[i]= 1 << (s->bits - 1);
974 if (mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || !mb_x)
975 modified_predictor = 1;
977 for (i=0;i<nb_components;i++) {
981 top[i] = buffer[mb_x][i];
983 PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
985 dc = mjpeg_decode_dc(s, s->dc_index[i]);
989 left[i] = buffer[mb_x][i] =
990 mask & (pred + (dc << point_transform));
993 if (s->restart_interval && !--s->restart_count) {
994 align_get_bits(&s->gb);
995 skip_bits(&s->gb, 16); /* skip RSTn */
998 if (s->nb_components == 4) {
999 for(i=0; i<nb_components; i++) {
1000 int c= s->comp_index[i];
1002 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1003 ptr[4*mb_x+3-c] = buffer[mb_x][i];
1005 } else if(s->bits == 9) {
1006 return AVERROR_PATCHWELCOME;
1008 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1009 ((uint16_t*)ptr)[4*mb_x+c] = buffer[mb_x][i];
1013 } else if (s->rct) {
1014 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1015 ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
1016 ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
1017 ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
1019 } else if (s->pegasus_rct) {
1020 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1021 ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2]) >> 2);
1022 ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
1023 ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
1026 for(i=0; i<nb_components; i++) {
1027 int c= s->comp_index[i];
1029 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1030 ptr[3*mb_x+2-c] = buffer[mb_x][i];
1032 } else if(s->bits == 9) {
1033 return AVERROR_PATCHWELCOME;
1035 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1036 ((uint16_t*)ptr)[3*mb_x+2-c] = buffer[mb_x][i];
1045 static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
1046 int point_transform, int nb_components)
1048 int i, mb_x, mb_y, mask;
1049 int bits= (s->bits+7)&~7;
1050 int resync_mb_y = 0;
1051 int resync_mb_x = 0;
1053 point_transform += bits - s->bits;
1054 mask = ((1 << s->bits) - 1) << point_transform;
1056 av_assert0(nb_components>=1 && nb_components<=4);
1058 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1059 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1060 if (s->restart_interval && !s->restart_count){
1061 s->restart_count = s->restart_interval;
1066 if(!mb_x || mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || s->interlaced){
1067 int toprow = mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x;
1068 int leftcol = !mb_x || mb_y == resync_mb_y && mb_x == resync_mb_x;
1069 for (i = 0; i < nb_components; i++) {
1072 int n, h, v, x, y, c, j, linesize;
1073 n = s->nb_blocks[i];
1074 c = s->comp_index[i];
1079 linesize= s->linesize[c];
1081 if(bits>8) linesize /= 2;
1083 for(j=0; j<n; j++) {
1086 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1090 ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
1092 if(x==0 && leftcol){
1093 pred= 1 << (bits - 1);
1098 if(x==0 && leftcol){
1099 pred= ptr[-linesize];
1101 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
1105 if (s->interlaced && s->bottom_field)
1106 ptr += linesize >> 1;
1108 *ptr= pred + (dc << point_transform);
1110 ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
1112 if(x==0 && leftcol){
1113 pred= 1 << (bits - 1);
1118 if(x==0 && leftcol){
1119 pred= ptr16[-linesize];
1121 PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
1125 if (s->interlaced && s->bottom_field)
1126 ptr16 += linesize >> 1;
1128 *ptr16= pred + (dc << point_transform);
1137 for (i = 0; i < nb_components; i++) {
1140 int n, h, v, x, y, c, j, linesize, dc;
1141 n = s->nb_blocks[i];
1142 c = s->comp_index[i];
1147 linesize = s->linesize[c];
1149 if(bits>8) linesize /= 2;
1151 for (j = 0; j < n; j++) {
1154 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1158 ptr = s->picture_ptr->data[c] +
1159 (linesize * (v * mb_y + y)) +
1160 (h * mb_x + x); //FIXME optimize this crap
1161 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
1164 *ptr = pred + (dc << point_transform);
1166 ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
1167 PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
1170 *ptr16= pred + (dc << point_transform);
1180 if (s->restart_interval && !--s->restart_count) {
1181 align_get_bits(&s->gb);
1182 skip_bits(&s->gb, 16); /* skip RSTn */
1189 static av_always_inline void mjpeg_copy_block(MJpegDecodeContext *s,
1190 uint8_t *dst, const uint8_t *src,
1191 int linesize, int lowres)
1194 case 0: s->hdsp.put_pixels_tab[1][0](dst, src, linesize, 8);
1196 case 1: copy_block4(dst, src, linesize, linesize, 4);
1198 case 2: copy_block2(dst, src, linesize, linesize, 2);
1200 case 3: *dst = *src;
1205 static void shift_output(MJpegDecodeContext *s, uint8_t *ptr, int linesize)
1207 int block_x, block_y;
1208 int size = 8 >> s->avctx->lowres;
1210 for (block_y=0; block_y<size; block_y++)
1211 for (block_x=0; block_x<size; block_x++)
1212 *(uint16_t*)(ptr + 2*block_x + block_y*linesize) <<= 16 - s->bits;
1214 for (block_y=0; block_y<size; block_y++)
1215 for (block_x=0; block_x<size; block_x++)
1216 *(ptr + block_x + block_y*linesize) <<= 8 - s->bits;
1220 static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
1221 int Al, const uint8_t *mb_bitmask,
1222 int mb_bitmask_size,
1223 const AVFrame *reference)
1226 uint8_t *data[MAX_COMPONENTS];
1227 const uint8_t *reference_data[MAX_COMPONENTS];
1228 int linesize[MAX_COMPONENTS];
1229 GetBitContext mb_bitmask_gb = {0}; // initialize to silence gcc warning
1230 int bytes_per_pixel = 1 + (s->bits > 8);
1233 if (mb_bitmask_size != (s->mb_width * s->mb_height + 7)>>3) {
1234 av_log(s->avctx, AV_LOG_ERROR, "mb_bitmask_size mismatches\n");
1235 return AVERROR_INVALIDDATA;
1237 init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
1240 s->restart_count = 0;
1242 for (i = 0; i < nb_components; i++) {
1243 int c = s->comp_index[i];
1244 data[c] = s->picture_ptr->data[c];
1245 reference_data[c] = reference ? reference->data[c] : NULL;
1246 linesize[c] = s->linesize[c];
1247 s->coefs_finished[c] |= 1;
1250 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1251 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1252 const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
1254 if (s->restart_interval && !s->restart_count)
1255 s->restart_count = s->restart_interval;
1257 if (get_bits_left(&s->gb) < 0) {
1258 av_log(s->avctx, AV_LOG_ERROR, "overread %d\n",
1259 -get_bits_left(&s->gb));
1260 return AVERROR_INVALIDDATA;
1262 for (i = 0; i < nb_components; i++) {
1264 int n, h, v, x, y, c, j;
1266 n = s->nb_blocks[i];
1267 c = s->comp_index[i];
1272 for (j = 0; j < n; j++) {
1273 block_offset = (((linesize[c] * (v * mb_y + y) * 8) +
1274 (h * mb_x + x) * 8 * bytes_per_pixel) >> s->avctx->lowres);
1276 if (s->interlaced && s->bottom_field)
1277 block_offset += linesize[c] >> 1;
1278 if ( 8*(h * mb_x + x) < s->width
1279 && 8*(v * mb_y + y) < s->height) {
1280 ptr = data[c] + block_offset;
1283 if (!s->progressive) {
1286 mjpeg_copy_block(s, ptr, reference_data[c] + block_offset,
1287 linesize[c], s->avctx->lowres);
1290 s->bdsp.clear_block(s->block);
1291 if (decode_block(s, s->block, i,
1292 s->dc_index[i], s->ac_index[i],
1293 s->quant_matrixes[s->quant_sindex[i]]) < 0) {
1294 av_log(s->avctx, AV_LOG_ERROR,
1295 "error y=%d x=%d\n", mb_y, mb_x);
1296 return AVERROR_INVALIDDATA;
1299 s->idsp.idct_put(ptr, linesize[c], s->block);
1301 shift_output(s, ptr, linesize[c]);
1305 int block_idx = s->block_stride[c] * (v * mb_y + y) +
1307 int16_t *block = s->blocks[c][block_idx];
1309 block[0] += get_bits1(&s->gb) *
1310 s->quant_matrixes[s->quant_sindex[i]][0] << Al;
1311 else if (decode_dc_progressive(s, block, i, s->dc_index[i],
1312 s->quant_matrixes[s->quant_sindex[i]],
1314 av_log(s->avctx, AV_LOG_ERROR,
1315 "error y=%d x=%d\n", mb_y, mb_x);
1316 return AVERROR_INVALIDDATA;
1319 ff_dlog(s->avctx, "mb: %d %d processed\n", mb_y, mb_x);
1320 ff_dlog(s->avctx, "%d %d %d %d %d %d %d %d \n",
1321 mb_x, mb_y, x, y, c, s->bottom_field,
1322 (v * mb_y + y) * 8, (h * mb_x + x) * 8);
1330 handle_rstn(s, nb_components);
1336 static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
1337 int se, int Ah, int Al)
1341 int c = s->comp_index[0];
1342 uint8_t *data = s->picture_ptr->data[c];
1343 int linesize = s->linesize[c];
1345 int16_t *quant_matrix = s->quant_matrixes[s->quant_sindex[0]];
1346 int bytes_per_pixel = 1 + (s->bits > 8);
1348 av_assert0(ss>=0 && Ah>=0 && Al>=0);
1349 if (se < ss || se > 63) {
1350 av_log(s->avctx, AV_LOG_ERROR, "SS/SE %d/%d is invalid\n", ss, se);
1351 return AVERROR_INVALIDDATA;
1355 // s->coefs_finished is a bitmask for coefficients coded
1356 // ss and se are parameters telling start and end coefficients
1357 s->coefs_finished[c] |= (2ULL << se) - (1ULL << ss);
1358 last_scan = !~s->coefs_finished[c];
1361 if (s->interlaced && s->bottom_field)
1362 data += linesize >> 1;
1364 s->restart_count = 0;
1366 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1367 uint8_t *ptr = data + (mb_y * linesize * 8 >> s->avctx->lowres);
1368 int block_idx = mb_y * s->block_stride[c];
1369 int16_t (*block)[64] = &s->blocks[c][block_idx];
1370 uint8_t *last_nnz = &s->last_nnz[c][block_idx];
1371 for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
1373 if (s->restart_interval && !s->restart_count)
1374 s->restart_count = s->restart_interval;
1377 ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
1378 quant_matrix, ss, se, Al, &EOBRUN);
1380 ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
1381 quant_matrix, ss, se, Al, &EOBRUN);
1383 av_log(s->avctx, AV_LOG_ERROR,
1384 "error y=%d x=%d\n", mb_y, mb_x);
1385 return AVERROR_INVALIDDATA;
1389 s->idsp.idct_put(ptr, linesize, *block);
1391 shift_output(s, ptr, linesize);
1392 ptr += bytes_per_pixel*8 >> s->avctx->lowres;
1394 if (handle_rstn(s, 0))
1401 int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask,
1402 int mb_bitmask_size, const AVFrame *reference)
1404 int len, nb_components, i, h, v, predictor, point_transform;
1406 const int block_size = s->lossless ? 1 : 8;
1407 int ilv, prev_shift;
1409 if (!s->got_picture) {
1410 av_log(s->avctx, AV_LOG_WARNING,
1411 "Can not process SOS before SOF, skipping\n");
1415 av_assert0(s->picture_ptr->data[0]);
1416 /* XXX: verify len field validity */
1417 len = get_bits(&s->gb, 16);
1418 nb_components = get_bits(&s->gb, 8);
1419 if (nb_components == 0 || nb_components > MAX_COMPONENTS) {
1420 av_log(s->avctx, AV_LOG_ERROR,
1421 "decode_sos: nb_components (%d) unsupported\n", nb_components);
1422 return AVERROR_PATCHWELCOME;
1424 if (len != 6 + 2 * nb_components) {
1425 av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len);
1426 return AVERROR_INVALIDDATA;
1428 for (i = 0; i < nb_components; i++) {
1429 id = get_bits(&s->gb, 8) - 1;
1430 av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id);
1431 /* find component index */
1432 for (index = 0; index < s->nb_components; index++)
1433 if (id == s->component_id[index])
1435 if (index == s->nb_components) {
1436 av_log(s->avctx, AV_LOG_ERROR,
1437 "decode_sos: index(%d) out of components\n", index);
1438 return AVERROR_INVALIDDATA;
1440 /* Metasoft MJPEG codec has Cb and Cr swapped */
1441 if (s->avctx->codec_tag == MKTAG('M', 'T', 'S', 'J')
1442 && nb_components == 3 && s->nb_components == 3 && i)
1445 s->quant_sindex[i] = s->quant_index[index];
1446 s->nb_blocks[i] = s->h_count[index] * s->v_count[index];
1447 s->h_scount[i] = s->h_count[index];
1448 s->v_scount[i] = s->v_count[index];
1450 if(nb_components == 3 && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P)
1452 if(nb_components == 1 && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P)
1453 index = (index+2)%3;
1455 s->comp_index[i] = index;
1457 s->dc_index[i] = get_bits(&s->gb, 4);
1458 s->ac_index[i] = get_bits(&s->gb, 4);
1460 if (s->dc_index[i] < 0 || s->ac_index[i] < 0 ||
1461 s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
1463 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))
1467 predictor = get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
1468 ilv = get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */
1469 if(s->avctx->codec_tag != AV_RL32("CJPG")){
1470 prev_shift = get_bits(&s->gb, 4); /* Ah */
1471 point_transform = get_bits(&s->gb, 4); /* Al */
1473 prev_shift = point_transform = 0;
1475 if (nb_components > 1) {
1476 /* interleaved stream */
1477 s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size);
1478 s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size);
1479 } else if (!s->ls) { /* skip this for JPEG-LS */
1480 h = s->h_max / s->h_scount[0];
1481 v = s->v_max / s->v_scount[0];
1482 s->mb_width = (s->width + h * block_size - 1) / (h * block_size);
1483 s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
1484 s->nb_blocks[0] = 1;
1489 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1490 av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d skip:%d %s comp:%d\n",
1491 s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
1492 predictor, point_transform, ilv, s->bits, s->mjpb_skiptosod,
1493 s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""), nb_components);
1496 /* mjpeg-b can have padding bytes between sos and image data, skip them */
1497 for (i = s->mjpb_skiptosod; i > 0; i--)
1498 skip_bits(&s->gb, 8);
1501 for (i = 0; i < nb_components; i++)
1502 s->last_dc[i] = (4 << s->bits);
1505 av_assert0(s->picture_ptr == s->picture);
1506 if (CONFIG_JPEGLS_DECODER && s->ls) {
1508 // reset_ls_coding_parameters(s, 0);
1510 if ((ret = ff_jpegls_decode_picture(s, predictor,
1511 point_transform, ilv)) < 0)
1515 if ((ret = ljpeg_decode_rgb_scan(s, nb_components, predictor, point_transform)) < 0)
1518 if ((ret = ljpeg_decode_yuv_scan(s, predictor,
1520 nb_components)) < 0)
1525 if (s->progressive && predictor) {
1526 av_assert0(s->picture_ptr == s->picture);
1527 if ((ret = mjpeg_decode_scan_progressive_ac(s, predictor,
1529 point_transform)) < 0)
1532 if ((ret = mjpeg_decode_scan(s, nb_components,
1533 prev_shift, point_transform,
1534 mb_bitmask, mb_bitmask_size, reference)) < 0)
1539 if (s->interlaced &&
1540 get_bits_left(&s->gb) > 32 &&
1541 show_bits(&s->gb, 8) == 0xFF) {
1542 GetBitContext bak = s->gb;
1543 align_get_bits(&bak);
1544 if (show_bits(&bak, 16) == 0xFFD1) {
1545 av_log(s->avctx, AV_LOG_DEBUG, "AVRn interlaced picture marker found\n");
1547 skip_bits(&s->gb, 16);
1548 s->bottom_field ^= 1;
1557 av_log(s->avctx, AV_LOG_ERROR, "decode_sos: ac/dc index out of range\n");
1558 return AVERROR_INVALIDDATA;
1561 static int mjpeg_decode_dri(MJpegDecodeContext *s)
1563 if (get_bits(&s->gb, 16) != 4)
1564 return AVERROR_INVALIDDATA;
1565 s->restart_interval = get_bits(&s->gb, 16);
1566 s->restart_count = 0;
1567 av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n",
1568 s->restart_interval);
1573 static int mjpeg_decode_app(MJpegDecodeContext *s)
1577 len = get_bits(&s->gb, 16);
1579 return AVERROR_INVALIDDATA;
1580 if (8 * len > get_bits_left(&s->gb))
1581 return AVERROR_INVALIDDATA;
1583 id = get_bits_long(&s->gb, 32);
1586 if (s->avctx->debug & FF_DEBUG_STARTCODE) {
1588 av_get_codec_tag_string(id_str, sizeof(id_str), av_bswap32(id));
1589 av_log(s->avctx, AV_LOG_DEBUG, "APPx (%s / %8X) len=%d\n", id_str, id, len);
1592 /* Buggy AVID, it puts EOI only at every 10th frame. */
1593 /* Also, this fourcc is used by non-avid files too, it holds some
1594 information, but it's always present in AVID-created files. */
1595 if (id == AV_RB32("AVI1")) {
1601 4bytes field_size_less_padding
1604 i = get_bits(&s->gb, 8); len--;
1605 av_log(s->avctx, AV_LOG_DEBUG, "polarity %d\n", i);
1607 skip_bits(&s->gb, 8);
1608 skip_bits(&s->gb, 32);
1609 skip_bits(&s->gb, 32);
1617 if (id == AV_RB32("JFIF")) {
1618 int t_w, t_h, v1, v2;
1619 skip_bits(&s->gb, 8); /* the trailing zero-byte */
1620 v1 = get_bits(&s->gb, 8);
1621 v2 = get_bits(&s->gb, 8);
1622 skip_bits(&s->gb, 8);
1624 s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 16);
1625 s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 16);
1626 ff_set_sar(s->avctx, s->avctx->sample_aspect_ratio);
1628 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1629 av_log(s->avctx, AV_LOG_INFO,
1630 "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
1632 s->avctx->sample_aspect_ratio.num,
1633 s->avctx->sample_aspect_ratio.den);
1635 t_w = get_bits(&s->gb, 8);
1636 t_h = get_bits(&s->gb, 8);
1638 /* skip thumbnail */
1639 if (len -10 - (t_w * t_h * 3) > 0)
1640 len -= t_w * t_h * 3;
1646 if (id == AV_RB32("Adob") && (get_bits(&s->gb, 8) == 'e')) {
1647 skip_bits(&s->gb, 16); /* version */
1648 skip_bits(&s->gb, 16); /* flags0 */
1649 skip_bits(&s->gb, 16); /* flags1 */
1650 s->adobe_transform = get_bits(&s->gb, 8);
1651 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1652 av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found, transform=%d\n", s->adobe_transform);
1657 if (id == AV_RB32("LJIF")) {
1659 int pegasus_rct = s->pegasus_rct;
1660 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1661 av_log(s->avctx, AV_LOG_INFO,
1662 "Pegasus lossless jpeg header found\n");
1663 skip_bits(&s->gb, 16); /* version ? */
1664 skip_bits(&s->gb, 16); /* unknown always 0? */
1665 skip_bits(&s->gb, 16); /* unknown always 0? */
1666 skip_bits(&s->gb, 16); /* unknown always 0? */
1667 switch (i=get_bits(&s->gb, 8)) {
1677 av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace %d\n", i);
1682 if (rgb != s->rgb || pegasus_rct != s->pegasus_rct) {
1683 av_log(s->avctx, AV_LOG_WARNING, "Mismatching LJIF tag\n");
1688 s->pegasus_rct = pegasus_rct;
1692 if (id == AV_RL32("colr") && len > 0) {
1693 s->colr = get_bits(&s->gb, 8);
1694 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1695 av_log(s->avctx, AV_LOG_INFO, "COLR %d\n", s->colr);
1699 if (id == AV_RL32("xfrm") && len > 0) {
1700 s->xfrm = get_bits(&s->gb, 8);
1701 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1702 av_log(s->avctx, AV_LOG_INFO, "XFRM %d\n", s->xfrm);
1707 /* JPS extension by VRex */
1708 if (s->start_code == APP3 && id == AV_RB32("_JPS") && len >= 10) {
1709 int flags, layout, type;
1710 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1711 av_log(s->avctx, AV_LOG_INFO, "_JPSJPS_\n");
1713 skip_bits(&s->gb, 32); len -= 4; /* JPS_ */
1714 skip_bits(&s->gb, 16); len -= 2; /* block length */
1715 skip_bits(&s->gb, 8); /* reserved */
1716 flags = get_bits(&s->gb, 8);
1717 layout = get_bits(&s->gb, 8);
1718 type = get_bits(&s->gb, 8);
1721 s->stereo3d = av_stereo3d_alloc();
1726 s->stereo3d->type = AV_STEREO3D_2D;
1727 } else if (type == 1) {
1730 s->stereo3d->type = AV_STEREO3D_LINES;
1733 s->stereo3d->type = AV_STEREO3D_SIDEBYSIDE;
1736 s->stereo3d->type = AV_STEREO3D_TOPBOTTOM;
1739 if (!(flags & 0x04)) {
1740 s->stereo3d->flags = AV_STEREO3D_FLAG_INVERT;
1747 if (s->start_code == APP1 && id == AV_RB32("Exif") && len >= 2) {
1748 GetByteContext gbytes;
1749 int ret, le, ifd_offset, bytes_read;
1750 const uint8_t *aligned;
1752 skip_bits(&s->gb, 16); // skip padding
1755 // init byte wise reading
1756 aligned = align_get_bits(&s->gb);
1757 bytestream2_init(&gbytes, aligned, len);
1760 ret = ff_tdecode_header(&gbytes, &le, &ifd_offset);
1762 av_log(s->avctx, AV_LOG_ERROR, "mjpeg: invalid TIFF header in EXIF data\n");
1764 bytestream2_seek(&gbytes, ifd_offset, SEEK_SET);
1766 // read 0th IFD and store the metadata
1767 // (return values > 0 indicate the presence of subimage metadata)
1768 ret = avpriv_exif_decode_ifd(s->avctx, &gbytes, le, 0, &s->exif_metadata);
1770 av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error decoding EXIF data\n");
1774 bytes_read = bytestream2_tell(&gbytes);
1775 skip_bits(&s->gb, bytes_read << 3);
1782 if ((s->start_code == APP1) && (len > (0x28 - 8))) {
1783 id = get_bits_long(&s->gb, 32);
1786 if (id == AV_RB32("mjpg")) {
1788 skip_bits(&s->gb, 32); /* field size */
1789 skip_bits(&s->gb, 32); /* pad field size */
1790 skip_bits(&s->gb, 32); /* next off */
1791 skip_bits(&s->gb, 32); /* quant off */
1792 skip_bits(&s->gb, 32); /* huff off */
1793 skip_bits(&s->gb, 32); /* image off */
1794 skip_bits(&s->gb, 32); /* scan off */
1795 skip_bits(&s->gb, 32); /* data off */
1797 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1798 av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n");
1803 /* slow but needed for extreme adobe jpegs */
1805 av_log(s->avctx, AV_LOG_ERROR,
1806 "mjpeg: error, decode_app parser read over the end\n");
1808 skip_bits(&s->gb, 8);
1813 static int mjpeg_decode_com(MJpegDecodeContext *s)
1815 int len = get_bits(&s->gb, 16);
1816 if (len >= 2 && 8 * len - 16 <= get_bits_left(&s->gb)) {
1817 char *cbuf = av_malloc(len - 1);
1820 for (i = 0; i < len - 2; i++)
1821 cbuf[i] = get_bits(&s->gb, 8);
1822 if (i > 0 && cbuf[i - 1] == '\n')
1827 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1828 av_log(s->avctx, AV_LOG_INFO, "comment: '%s'\n", cbuf);
1830 /* buggy avid, it puts EOI only at every 10th frame */
1831 if (!strncmp(cbuf, "AVID", 4)) {
1832 parse_avid(s, cbuf, len);
1833 } else if (!strcmp(cbuf, "CS=ITU601"))
1835 else if ((!strncmp(cbuf, "Intel(R) JPEG Library, version 1", 32) && s->avctx->codec_tag) ||
1836 (!strncmp(cbuf, "Metasoft MJPEG Codec", 20)))
1838 else if (!strcmp(cbuf, "MULTISCOPE II"))
1848 /* return the 8 bit start code value and update the search
1849 state. Return -1 if no start code found */
1850 static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
1852 const uint8_t *buf_ptr;
1857 buf_ptr = *pbuf_ptr;
1858 while (buf_end - buf_ptr > 1) {
1861 if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) {
1870 ff_dlog(NULL, "find_marker skipped %d bytes\n", skipped);
1871 *pbuf_ptr = buf_ptr;
1875 int ff_mjpeg_find_marker(MJpegDecodeContext *s,
1876 const uint8_t **buf_ptr, const uint8_t *buf_end,
1877 const uint8_t **unescaped_buf_ptr,
1878 int *unescaped_buf_size)
1881 start_code = find_marker(buf_ptr, buf_end);
1883 av_fast_padded_malloc(&s->buffer, &s->buffer_size, buf_end - *buf_ptr);
1885 return AVERROR(ENOMEM);
1887 /* unescape buffer of SOS, use special treatment for JPEG-LS */
1888 if (start_code == SOS && !s->ls) {
1889 const uint8_t *src = *buf_ptr;
1890 uint8_t *dst = s->buffer;
1892 while (src < buf_end) {
1893 uint8_t x = *(src++);
1896 if (s->avctx->codec_id != AV_CODEC_ID_THP) {
1898 while (src < buf_end && x == 0xff)
1901 if (x >= 0xd0 && x <= 0xd7)
1908 *unescaped_buf_ptr = s->buffer;
1909 *unescaped_buf_size = dst - s->buffer;
1910 memset(s->buffer + *unescaped_buf_size, 0,
1911 AV_INPUT_BUFFER_PADDING_SIZE);
1913 av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %"PTRDIFF_SPECIFIER" bytes\n",
1914 (buf_end - *buf_ptr) - (dst - s->buffer));
1915 } else if (start_code == SOS && s->ls) {
1916 const uint8_t *src = *buf_ptr;
1917 uint8_t *dst = s->buffer;
1923 while (src + t < buf_end) {
1924 uint8_t x = src[t++];
1926 while ((src + t < buf_end) && x == 0xff)
1935 init_put_bits(&pb, dst, t);
1937 /* unescape bitstream */
1939 uint8_t x = src[b++];
1940 put_bits(&pb, 8, x);
1944 av_log(s->avctx, AV_LOG_WARNING, "Invalid escape sequence\n");
1947 put_bits(&pb, 7, x);
1951 flush_put_bits(&pb);
1953 *unescaped_buf_ptr = dst;
1954 *unescaped_buf_size = (bit_count + 7) >> 3;
1955 memset(s->buffer + *unescaped_buf_size, 0,
1956 AV_INPUT_BUFFER_PADDING_SIZE);
1958 *unescaped_buf_ptr = *buf_ptr;
1959 *unescaped_buf_size = buf_end - *buf_ptr;
1965 int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
1968 AVFrame *frame = data;
1969 const uint8_t *buf = avpkt->data;
1970 int buf_size = avpkt->size;
1971 MJpegDecodeContext *s = avctx->priv_data;
1972 const uint8_t *buf_end, *buf_ptr;
1973 const uint8_t *unescaped_buf_ptr;
1975 int unescaped_buf_size;
1981 av_dict_free(&s->exif_metadata);
1982 av_freep(&s->stereo3d);
1983 s->adobe_transform = -1;
1986 buf_end = buf + buf_size;
1987 while (buf_ptr < buf_end) {
1988 /* find start next marker */
1989 start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end,
1991 &unescaped_buf_size);
1993 if (start_code < 0) {
1995 } else if (unescaped_buf_size > INT_MAX / 8) {
1996 av_log(avctx, AV_LOG_ERROR,
1997 "MJPEG packet 0x%x too big (%d/%d), corrupt data?\n",
1998 start_code, unescaped_buf_size, buf_size);
1999 return AVERROR_INVALIDDATA;
2001 av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%"PTRDIFF_SPECIFIER"\n",
2002 start_code, buf_end - buf_ptr);
2004 ret = init_get_bits8(&s->gb, unescaped_buf_ptr, unescaped_buf_size);
2007 av_log(avctx, AV_LOG_ERROR, "invalid buffer\n");
2011 s->start_code = start_code;
2012 if (s->avctx->debug & FF_DEBUG_STARTCODE)
2013 av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
2015 /* process markers */
2016 if (start_code >= 0xd0 && start_code <= 0xd7)
2017 av_log(avctx, AV_LOG_DEBUG,
2018 "restart marker: %d\n", start_code & 0x0f);
2020 else if (start_code >= APP0 && start_code <= APP15)
2021 mjpeg_decode_app(s);
2023 else if (start_code == COM)
2024 mjpeg_decode_com(s);
2028 if (!CONFIG_JPEGLS_DECODER &&
2029 (start_code == SOF48 || start_code == LSE)) {
2030 av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n");
2031 return AVERROR(ENOSYS);
2034 switch (start_code) {
2036 s->restart_interval = 0;
2037 s->restart_count = 0;
2038 /* nothing to do on SOI */
2041 ff_mjpeg_decode_dqt(s);
2044 if ((ret = ff_mjpeg_decode_dht(s)) < 0) {
2045 av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
2054 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2061 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2065 s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
2069 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2073 s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
2077 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2081 if (!CONFIG_JPEGLS_DECODER ||
2082 (ret = ff_jpegls_decode_lse(s)) < 0)
2088 if (!s->got_picture) {
2089 av_log(avctx, AV_LOG_WARNING,
2090 "Found EOI before any SOF, ignoring\n");
2093 if (s->interlaced) {
2094 s->bottom_field ^= 1;
2095 /* if not bottom field, do not output image yet */
2096 if (s->bottom_field == !s->interlace_polarity)
2099 if ((ret = av_frame_ref(frame, s->picture_ptr)) < 0)
2105 int qp = FFMAX3(s->qscale[0],
2108 int qpw = (s->width + 15) / 16;
2109 AVBufferRef *qp_table_buf = av_buffer_alloc(qpw);
2111 memset(qp_table_buf->data, qp, qpw);
2112 av_frame_set_qp_table(data, qp_table_buf, 0, FF_QSCALE_TYPE_MPEG1);
2115 if(avctx->debug & FF_DEBUG_QP)
2116 av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", qp);
2122 if ((ret = ff_mjpeg_decode_sos(s, NULL, 0, NULL)) < 0 &&
2123 (avctx->err_recognition & AV_EF_EXPLODE))
2127 mjpeg_decode_dri(s);
2139 av_log(avctx, AV_LOG_ERROR,
2140 "mjpeg: unsupported coding type (%x)\n", start_code);
2144 /* eof process start code */
2145 buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
2146 av_log(avctx, AV_LOG_DEBUG,
2147 "marker parser used %d bytes (%d bits)\n",
2148 (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
2150 if (s->got_picture && s->cur_scan) {
2151 av_log(avctx, AV_LOG_WARNING, "EOI missing, emulating\n");
2154 av_log(avctx, AV_LOG_FATAL, "No JPEG data found in image\n");
2155 return AVERROR_INVALIDDATA;
2161 is16bit = av_pix_fmt_desc_get(s->avctx->pix_fmt)->comp[0].step_minus1;
2163 if (AV_RB32(s->upscale_h)) {
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_YUVJ440P ||
2168 avctx->pix_fmt == AV_PIX_FMT_YUV440P ||
2169 avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
2170 avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
2171 avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
2172 avctx->pix_fmt == AV_PIX_FMT_YUV420P16||
2173 avctx->pix_fmt == AV_PIX_FMT_YUVA420P ||
2174 avctx->pix_fmt == AV_PIX_FMT_YUVA420P16||
2175 avctx->pix_fmt == AV_PIX_FMT_GBRP ||
2176 avctx->pix_fmt == AV_PIX_FMT_GBRAP
2178 avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2179 for (p = 0; p<4; p++) {
2180 uint8_t *line = s->picture_ptr->data[p];
2183 if (!s->upscale_h[p])
2186 w = FF_CEIL_RSHIFT(w, hshift);
2187 h = FF_CEIL_RSHIFT(h, vshift);
2189 if (s->upscale_v[p])
2192 for (i = 0; i < h; i++) {
2193 if (s->upscale_h[p] == 1) {
2194 if (is16bit) ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 2];
2195 else line[w - 1] = line[(w - 1) / 2];
2196 for (index = w - 2; index > 0; index--) {
2198 ((uint16_t*)line)[index] = (((uint16_t*)line)[index / 2] + ((uint16_t*)line)[(index + 1) / 2]) >> 1;
2200 line[index] = (line[index / 2] + line[(index + 1) / 2]) >> 1;
2202 } else if (s->upscale_h[p] == 2) {
2204 ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 3];
2206 ((uint16_t*)line)[w - 2] = ((uint16_t*)line)[w - 1];
2208 line[w - 1] = line[(w - 1) / 3];
2210 line[w - 2] = line[w - 1];
2212 for (index = w - 3; index > 0; index--) {
2213 line[index] = (line[index / 3] + line[(index + 1) / 3] + line[(index + 2) / 3] + 1) / 3;
2216 line += s->linesize[p];
2220 if (AV_RB32(s->upscale_v)) {
2222 av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
2223 avctx->pix_fmt == AV_PIX_FMT_YUV444P ||
2224 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
2225 avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
2226 avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
2227 avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
2228 avctx->pix_fmt == AV_PIX_FMT_YUV440P ||
2229 avctx->pix_fmt == AV_PIX_FMT_YUVJ440P ||
2230 avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
2231 avctx->pix_fmt == AV_PIX_FMT_YUVA420P ||
2232 avctx->pix_fmt == AV_PIX_FMT_YUVA420P16||
2233 avctx->pix_fmt == AV_PIX_FMT_GBRP ||
2234 avctx->pix_fmt == AV_PIX_FMT_GBRAP
2236 avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2237 for (p = 0; p < 4; p++) {
2241 if (!s->upscale_v[p])
2244 w = FF_CEIL_RSHIFT(w, hshift);
2245 h = FF_CEIL_RSHIFT(h, vshift);
2247 dst = &((uint8_t *)s->picture_ptr->data[p])[(h - 1) * s->linesize[p]];
2248 for (i = h - 1; i; i--) {
2249 uint8_t *src1 = &((uint8_t *)s->picture_ptr->data[p])[i / 2 * s->linesize[p]];
2250 uint8_t *src2 = &((uint8_t *)s->picture_ptr->data[p])[(i + 1) / 2 * s->linesize[p]];
2251 if (src1 == src2 || i == h - 1) {
2252 memcpy(dst, src1, w);
2254 for (index = 0; index < w; index++)
2255 dst[index] = (src1[index] + src2[index]) >> 1;
2257 dst -= s->linesize[p];
2263 avcodec_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2264 for (index=0; index<4; index++) {
2265 uint8_t *dst = s->picture_ptr->data[index];
2266 int w = s->picture_ptr->width;
2267 int h = s->picture_ptr->height;
2268 if(index && index<3){
2269 w = FF_CEIL_RSHIFT(w, hshift);
2270 h = FF_CEIL_RSHIFT(h, vshift);
2273 uint8_t *dst2 = dst + s->picture_ptr->linesize[index]*(h-1);
2274 for (i=0; i<h/2; i++) {
2276 FFSWAP(int, dst[j], dst2[j]);
2277 dst += s->picture_ptr->linesize[index];
2278 dst2 -= s->picture_ptr->linesize[index];
2283 if (s->adobe_transform == 0 && s->avctx->pix_fmt == AV_PIX_FMT_GBRAP) {
2284 int w = s->picture_ptr->width;
2285 int h = s->picture_ptr->height;
2286 for (i=0; i<h; i++) {
2289 for (index=0; index<4; index++) {
2290 dst[index] = s->picture_ptr->data[index]
2291 + s->picture_ptr->linesize[index]*i;
2293 for (j=0; j<w; j++) {
2295 int r = dst[0][j] * k;
2296 int g = dst[1][j] * k;
2297 int b = dst[2][j] * k;
2298 dst[0][j] = g*257 >> 16;
2299 dst[1][j] = b*257 >> 16;
2300 dst[2][j] = r*257 >> 16;
2305 if (s->adobe_transform == 2 && s->avctx->pix_fmt == AV_PIX_FMT_YUVA444P) {
2306 int w = s->picture_ptr->width;
2307 int h = s->picture_ptr->height;
2308 for (i=0; i<h; i++) {
2311 for (index=0; index<4; index++) {
2312 dst[index] = s->picture_ptr->data[index]
2313 + s->picture_ptr->linesize[index]*i;
2315 for (j=0; j<w; j++) {
2317 int r = (255 - dst[0][j]) * k;
2318 int g = (128 - dst[1][j]) * k;
2319 int b = (128 - dst[2][j]) * k;
2320 dst[0][j] = r*257 >> 16;
2321 dst[1][j] = (g*257 >> 16) + 128;
2322 dst[2][j] = (b*257 >> 16) + 128;
2329 AVStereo3D *stereo = av_stereo3d_create_side_data(data);
2331 stereo->type = s->stereo3d->type;
2332 stereo->flags = s->stereo3d->flags;
2334 av_freep(&s->stereo3d);
2337 av_dict_copy(avpriv_frame_get_metadatap(data), s->exif_metadata, 0);
2338 av_dict_free(&s->exif_metadata);
2340 av_log(avctx, AV_LOG_DEBUG, "decode frame unused %"PTRDIFF_SPECIFIER" bytes\n",
2342 // return buf_end - buf_ptr;
2343 return buf_ptr - buf;
2346 av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
2348 MJpegDecodeContext *s = avctx->priv_data;
2351 if (s->interlaced && s->bottom_field == !s->interlace_polarity && s->got_picture && !avctx->frame_number) {
2352 av_log(avctx, AV_LOG_INFO, "Single field\n");
2356 av_frame_free(&s->picture);
2357 s->picture_ptr = NULL;
2358 } else if (s->picture_ptr)
2359 av_frame_unref(s->picture_ptr);
2361 av_freep(&s->buffer);
2362 av_freep(&s->stereo3d);
2363 av_freep(&s->ljpeg_buffer);
2364 s->ljpeg_buffer_size = 0;
2366 for (i = 0; i < 3; i++) {
2367 for (j = 0; j < 4; j++)
2368 ff_free_vlc(&s->vlcs[i][j]);
2370 for (i = 0; i < MAX_COMPONENTS; i++) {
2371 av_freep(&s->blocks[i]);
2372 av_freep(&s->last_nnz[i]);
2374 av_dict_free(&s->exif_metadata);
2378 static void decode_flush(AVCodecContext *avctx)
2380 MJpegDecodeContext *s = avctx->priv_data;
2384 #if CONFIG_MJPEG_DECODER
2385 #define OFFSET(x) offsetof(MJpegDecodeContext, x)
2386 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2387 static const AVOption options[] = {
2388 { "extern_huff", "Use external huffman table.",
2389 OFFSET(extern_huff), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VD },
2393 static const AVClass mjpegdec_class = {
2394 .class_name = "MJPEG decoder",
2395 .item_name = av_default_item_name,
2397 .version = LIBAVUTIL_VERSION_INT,
2400 AVCodec ff_mjpeg_decoder = {
2402 .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
2403 .type = AVMEDIA_TYPE_VIDEO,
2404 .id = AV_CODEC_ID_MJPEG,
2405 .priv_data_size = sizeof(MJpegDecodeContext),
2406 .init = ff_mjpeg_decode_init,
2407 .close = ff_mjpeg_decode_end,
2408 .decode = ff_mjpeg_decode_frame,
2409 .flush = decode_flush,
2410 .capabilities = AV_CODEC_CAP_DR1,
2412 .priv_class = &mjpegdec_class,
2413 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
2416 #if CONFIG_THP_DECODER
2417 AVCodec ff_thp_decoder = {
2419 .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
2420 .type = AVMEDIA_TYPE_VIDEO,
2421 .id = AV_CODEC_ID_THP,
2422 .priv_data_size = sizeof(MJpegDecodeContext),
2423 .init = ff_mjpeg_decode_init,
2424 .close = ff_mjpeg_decode_end,
2425 .decode = ff_mjpeg_decode_frame,
2426 .flush = decode_flush,
2427 .capabilities = AV_CODEC_CAP_DR1,
2429 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,