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"
42 #include "jpegtables.h"
45 #include "jpeglsdec.h"
50 #include "bytestream.h"
53 static int build_vlc(VLC *vlc, const uint8_t *bits_table,
54 const uint8_t *val_table, int nb_codes,
55 int use_static, int is_ac)
57 uint8_t huff_size[256] = { 0 };
58 uint16_t huff_code[256];
59 uint16_t huff_sym[256];
62 av_assert0(nb_codes <= 256);
64 ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
66 for (i = 0; i < 256; i++)
67 huff_sym[i] = i + 16 * is_ac;
70 huff_sym[0] = 16 * 256;
72 return ff_init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
73 huff_code, 2, 2, huff_sym, 2, 2, use_static);
76 static int init_default_huffman_tables(MJpegDecodeContext *s)
82 const uint8_t *values;
86 { 0, 0, avpriv_mjpeg_bits_dc_luminance,
87 avpriv_mjpeg_val_dc, 12, 12 },
88 { 0, 1, avpriv_mjpeg_bits_dc_chrominance,
89 avpriv_mjpeg_val_dc, 12, 12 },
90 { 1, 0, avpriv_mjpeg_bits_ac_luminance,
91 avpriv_mjpeg_val_ac_luminance, 251, 162 },
92 { 1, 1, avpriv_mjpeg_bits_ac_chrominance,
93 avpriv_mjpeg_val_ac_chrominance, 251, 162 },
94 { 2, 0, avpriv_mjpeg_bits_ac_luminance,
95 avpriv_mjpeg_val_ac_luminance, 251, 162 },
96 { 2, 1, avpriv_mjpeg_bits_ac_chrominance,
97 avpriv_mjpeg_val_ac_chrominance, 251, 162 },
101 for (i = 0; i < FF_ARRAY_ELEMS(ht); i++) {
102 ret = build_vlc(&s->vlcs[ht[i].class][ht[i].index],
103 ht[i].bits, ht[i].values, ht[i].codes,
104 0, ht[i].class == 1);
108 if (ht[i].class < 2) {
109 memcpy(s->raw_huffman_lengths[ht[i].class][ht[i].index],
111 memcpy(s->raw_huffman_values[ht[i].class][ht[i].index],
112 ht[i].values, ht[i].length);
119 static void parse_avid(MJpegDecodeContext *s, uint8_t *buf, int len)
122 if (len > 14 && buf[12] == 1) /* 1 - NTSC */
123 s->interlace_polarity = 1;
124 if (len > 14 && buf[12] == 2) /* 2 - PAL */
125 s->interlace_polarity = 0;
126 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
127 av_log(s->avctx, AV_LOG_INFO, "AVID: len:%d %d\n", len, len > 14 ? buf[12] : -1);
130 static void init_idct(AVCodecContext *avctx)
132 MJpegDecodeContext *s = avctx->priv_data;
134 ff_idctdsp_init(&s->idsp, avctx);
135 ff_init_scantable(s->idsp.idct_permutation, &s->scantable,
139 av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
141 MJpegDecodeContext *s = avctx->priv_data;
144 if (!s->picture_ptr) {
145 s->picture = av_frame_alloc();
147 return AVERROR(ENOMEM);
148 s->picture_ptr = s->picture;
152 ff_blockdsp_init(&s->bdsp, avctx);
153 ff_hpeldsp_init(&s->hdsp, avctx->flags);
158 s->first_picture = 1;
160 s->org_height = avctx->coded_height;
161 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
162 avctx->colorspace = AVCOL_SPC_BT470BG;
163 s->hwaccel_pix_fmt = s->hwaccel_sw_pix_fmt = AV_PIX_FMT_NONE;
165 if ((ret = init_default_huffman_tables(s)) < 0)
168 if (s->extern_huff) {
169 av_log(avctx, AV_LOG_INFO, "using external huffman table\n");
170 if ((ret = init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8)) < 0)
172 if (ff_mjpeg_decode_dht(s)) {
173 av_log(avctx, AV_LOG_ERROR,
174 "error using external huffman table, switching back to internal\n");
175 init_default_huffman_tables(s);
178 if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
179 s->interlace_polarity = 1; /* bottom field first */
180 av_log(avctx, AV_LOG_DEBUG, "bottom field first\n");
181 } else if (avctx->field_order == AV_FIELD_UNKNOWN) {
182 if (avctx->codec_tag == AV_RL32("MJPG"))
183 s->interlace_polarity = 1;
186 if ( avctx->extradata_size > 8
187 && AV_RL32(avctx->extradata) == 0x2C
188 && AV_RL32(avctx->extradata+4) == 0x18) {
189 parse_avid(s, avctx->extradata, avctx->extradata_size);
192 if (avctx->codec->id == AV_CODEC_ID_AMV)
199 /* quantize tables */
200 int ff_mjpeg_decode_dqt(MJpegDecodeContext *s)
204 len = get_bits(&s->gb, 16) - 2;
206 if (8*len > get_bits_left(&s->gb)) {
207 av_log(s->avctx, AV_LOG_ERROR, "dqt: len %d is too large\n", len);
208 return AVERROR_INVALIDDATA;
212 int pr = get_bits(&s->gb, 4);
214 av_log(s->avctx, AV_LOG_ERROR, "dqt: invalid precision\n");
215 return AVERROR_INVALIDDATA;
217 index = get_bits(&s->gb, 4);
220 av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index);
221 /* read quant table */
222 for (i = 0; i < 64; i++) {
223 s->quant_matrixes[index][i] = get_bits(&s->gb, pr ? 16 : 8);
224 if (s->quant_matrixes[index][i] == 0) {
225 av_log(s->avctx, AV_LOG_ERROR, "dqt: 0 quant value\n");
226 return AVERROR_INVALIDDATA;
230 // XXX FIXME fine-tune, and perhaps add dc too
231 s->qscale[index] = FFMAX(s->quant_matrixes[index][1],
232 s->quant_matrixes[index][8]) >> 1;
233 av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n",
234 index, s->qscale[index]);
235 len -= 1 + 64 * (1+pr);
240 /* decode huffman tables and build VLC decoders */
241 int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
243 int len, index, i, class, n, v, code_max;
244 uint8_t bits_table[17];
245 uint8_t val_table[256];
248 len = get_bits(&s->gb, 16) - 2;
250 if (8*len > get_bits_left(&s->gb)) {
251 av_log(s->avctx, AV_LOG_ERROR, "dht: len %d is too large\n", len);
252 return AVERROR_INVALIDDATA;
257 return AVERROR_INVALIDDATA;
258 class = get_bits(&s->gb, 4);
260 return AVERROR_INVALIDDATA;
261 index = get_bits(&s->gb, 4);
263 return AVERROR_INVALIDDATA;
265 for (i = 1; i <= 16; i++) {
266 bits_table[i] = get_bits(&s->gb, 8);
270 if (len < n || n > 256)
271 return AVERROR_INVALIDDATA;
274 for (i = 0; i < n; i++) {
275 v = get_bits(&s->gb, 8);
282 /* build VLC and flush previous vlc if present */
283 ff_free_vlc(&s->vlcs[class][index]);
284 av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
285 class, index, code_max + 1);
286 if ((ret = build_vlc(&s->vlcs[class][index], bits_table, val_table,
287 code_max + 1, 0, class > 0)) < 0)
291 ff_free_vlc(&s->vlcs[2][index]);
292 if ((ret = build_vlc(&s->vlcs[2][index], bits_table, val_table,
293 code_max + 1, 0, 0)) < 0)
297 for (i = 0; i < 16; i++)
298 s->raw_huffman_lengths[class][index][i] = bits_table[i + 1];
299 for (i = 0; i < 256; i++)
300 s->raw_huffman_values[class][index][i] = val_table[i];
305 int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
307 int len, nb_components, i, width, height, bits, ret, size_change;
309 int h_count[MAX_COMPONENTS] = { 0 };
310 int v_count[MAX_COMPONENTS] = { 0 };
313 memset(s->upscale_h, 0, sizeof(s->upscale_h));
314 memset(s->upscale_v, 0, sizeof(s->upscale_v));
316 /* XXX: verify len field validity */
317 len = get_bits(&s->gb, 16);
318 bits = get_bits(&s->gb, 8);
320 if (bits > 16 || bits < 1) {
321 av_log(s->avctx, AV_LOG_ERROR, "bits %d is invalid\n", bits);
322 return AVERROR_INVALIDDATA;
325 if (s->avctx->bits_per_raw_sample != bits) {
326 av_log(s->avctx, s->avctx->bits_per_raw_sample > 0 ? AV_LOG_INFO : AV_LOG_DEBUG, "Changing bps from %d to %d\n", s->avctx->bits_per_raw_sample, bits);
327 s->avctx->bits_per_raw_sample = bits;
332 if (bits == 9 && !s->pegasus_rct)
333 s->rct = 1; // FIXME ugly
335 if(s->lossless && s->avctx->lowres){
336 av_log(s->avctx, AV_LOG_ERROR, "lowres is not possible with lossless jpeg\n");
340 height = get_bits(&s->gb, 16);
341 width = get_bits(&s->gb, 16);
343 // HACK for odd_height.mov
344 if (s->interlaced && s->width == width && s->height == height + 1)
347 av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
348 if (av_image_check_size(width, height, 0, s->avctx) < 0)
349 return AVERROR_INVALIDDATA;
350 if (s->buf_size && (width + 7) / 8 * ((height + 7) / 8) > s->buf_size * 4LL)
351 return AVERROR_INVALIDDATA;
353 nb_components = get_bits(&s->gb, 8);
354 if (nb_components <= 0 ||
355 nb_components > MAX_COMPONENTS)
357 if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
358 if (nb_components != s->nb_components) {
359 av_log(s->avctx, AV_LOG_ERROR,
360 "nb_components changing in interlaced picture\n");
361 return AVERROR_INVALIDDATA;
364 if (s->ls && !(bits <= 8 || nb_components == 1)) {
365 avpriv_report_missing_feature(s->avctx,
366 "JPEG-LS that is not <= 8 "
367 "bits/component or 16-bit gray");
368 return AVERROR_PATCHWELCOME;
370 s->nb_components = nb_components;
373 for (i = 0; i < nb_components; i++) {
375 s->component_id[i] = get_bits(&s->gb, 8) - 1;
376 h_count[i] = get_bits(&s->gb, 4);
377 v_count[i] = get_bits(&s->gb, 4);
378 /* compute hmax and vmax (only used in interleaved case) */
379 if (h_count[i] > s->h_max)
380 s->h_max = h_count[i];
381 if (v_count[i] > s->v_max)
382 s->v_max = v_count[i];
383 s->quant_index[i] = get_bits(&s->gb, 8);
384 if (s->quant_index[i] >= 4) {
385 av_log(s->avctx, AV_LOG_ERROR, "quant_index is invalid\n");
386 return AVERROR_INVALIDDATA;
388 if (!h_count[i] || !v_count[i]) {
389 av_log(s->avctx, AV_LOG_ERROR,
390 "Invalid sampling factor in component %d %d:%d\n",
391 i, h_count[i], v_count[i]);
392 return AVERROR_INVALIDDATA;
395 av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n",
396 i, h_count[i], v_count[i],
397 s->component_id[i], s->quant_index[i]);
399 if ( nb_components == 4
400 && s->component_id[0] == 'C' - 1
401 && s->component_id[1] == 'M' - 1
402 && s->component_id[2] == 'Y' - 1
403 && s->component_id[3] == 'K' - 1)
404 s->adobe_transform = 0;
406 if (s->ls && (s->h_max > 1 || s->v_max > 1)) {
407 avpriv_report_missing_feature(s->avctx, "Subsampling in JPEG-LS");
408 return AVERROR_PATCHWELCOME;
412 /* if different size, realloc/alloc picture */
413 if (width != s->width || height != s->height || bits != s->bits ||
414 memcmp(s->h_count, h_count, sizeof(h_count)) ||
415 memcmp(s->v_count, v_count, sizeof(v_count))) {
421 memcpy(s->h_count, h_count, sizeof(h_count));
422 memcpy(s->v_count, v_count, sizeof(v_count));
426 /* test interlaced mode */
427 if (s->first_picture &&
428 (s->multiscope != 2 || s->avctx->time_base.den >= 25 * s->avctx->time_base.num) &&
429 s->org_height != 0 &&
430 s->height < ((s->org_height * 3) / 4)) {
432 s->bottom_field = s->interlace_polarity;
433 s->picture_ptr->interlaced_frame = 1;
434 s->picture_ptr->top_field_first = !s->interlace_polarity;
438 ret = ff_set_dimensions(s->avctx, width, height);
442 s->first_picture = 0;
447 if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
448 if (s->progressive) {
449 avpriv_request_sample(s->avctx, "progressively coded interlaced picture");
450 return AVERROR_INVALIDDATA;
453 if (s->v_max == 1 && s->h_max == 1 && s->lossless==1 && (nb_components==3 || nb_components==4))
455 else if (!s->lossless)
457 /* XXX: not complete test ! */
458 pix_fmt_id = ((unsigned)s->h_count[0] << 28) | (s->v_count[0] << 24) |
459 (s->h_count[1] << 20) | (s->v_count[1] << 16) |
460 (s->h_count[2] << 12) | (s->v_count[2] << 8) |
461 (s->h_count[3] << 4) | s->v_count[3];
462 av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id);
463 /* NOTE we do not allocate pictures large enough for the possible
464 * padding of h/v_count being 4 */
465 if (!(pix_fmt_id & 0xD0D0D0D0))
466 pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1;
467 if (!(pix_fmt_id & 0x0D0D0D0D))
468 pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1;
470 for (i = 0; i < 8; i++) {
471 int j = 6 + (i&1) - (i&6);
472 int is = (pix_fmt_id >> (4*i)) & 0xF;
473 int js = (pix_fmt_id >> (4*j)) & 0xF;
475 if (is == 1 && js != 2 && (i < 2 || i > 5))
476 js = (pix_fmt_id >> ( 8 + 4*(i&1))) & 0xF;
477 if (is == 1 && js != 2 && (i < 2 || i > 5))
478 js = (pix_fmt_id >> (16 + 4*(i&1))) & 0xF;
480 if (is == 1 && js == 2) {
481 if (i & 1) s->upscale_h[j/2] = 1;
482 else s->upscale_v[j/2] = 1;
486 switch (pix_fmt_id) {
489 s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_BGR48;
491 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
492 s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_GBRP : AV_PIX_FMT_GBRP16;
494 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
495 else s->avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
496 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
499 av_assert0(s->nb_components == 3);
503 s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_ABGR : AV_PIX_FMT_RGBA64;
505 if (s->adobe_transform == 0 && s->bits <= 8) {
506 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
508 s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_YUVA444P : AV_PIX_FMT_YUVA444P16;
509 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
512 av_assert0(s->nb_components == 4);
516 if (s->adobe_transform == 0 && s->bits <= 8) {
517 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
518 s->upscale_v[1] = s->upscale_v[2] = 1;
519 s->upscale_h[1] = s->upscale_h[2] = 1;
520 } else if (s->adobe_transform == 2 && s->bits <= 8) {
521 s->avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
522 s->upscale_v[1] = s->upscale_v[2] = 1;
523 s->upscale_h[1] = s->upscale_h[2] = 1;
524 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
526 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
527 else s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
528 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
530 av_assert0(s->nb_components == 4);
536 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
539 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
544 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
547 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
559 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
561 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
568 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
569 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
572 s->upscale_v[0] = s->upscale_v[1] = 1;
574 if (pix_fmt_id == 0x14111100)
575 s->upscale_v[1] = s->upscale_v[2] = 1;
576 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;
579 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
583 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
584 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
587 s->upscale_h[0] = s->upscale_h[1] = 1;
589 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
590 else s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
591 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
597 s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
598 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
599 s->upscale_h[1] = s->upscale_h[2] = 2;
603 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
606 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
612 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV420P : AV_PIX_FMT_YUVJ420P;
613 else s->avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
614 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
615 if (pix_fmt_id == 0x42111100) {
618 s->upscale_h[1] = s->upscale_h[2] = 1;
619 } else if (pix_fmt_id == 0x24111100) {
622 s->upscale_v[1] = s->upscale_v[2] = 1;
623 } else if (pix_fmt_id == 0x23111100) {
626 s->upscale_v[1] = s->upscale_v[2] = 2;
630 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV411P : AV_PIX_FMT_YUVJ411P;
633 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
637 avpriv_report_missing_feature(s->avctx, "Pixel format 0x%x bits:%d", pix_fmt_id, s->bits);
638 memset(s->upscale_h, 0, sizeof(s->upscale_h));
639 memset(s->upscale_v, 0, sizeof(s->upscale_v));
640 return AVERROR_PATCHWELCOME;
642 if ((AV_RB32(s->upscale_h) || AV_RB32(s->upscale_v)) && s->avctx->lowres) {
643 avpriv_report_missing_feature(s->avctx, "Lowres for weird subsampling");
644 return AVERROR_PATCHWELCOME;
646 if ((AV_RB32(s->upscale_h) || AV_RB32(s->upscale_v)) && s->progressive && s->avctx->pix_fmt == AV_PIX_FMT_GBRP) {
647 avpriv_report_missing_feature(s->avctx, "progressive for weird subsampling");
648 return AVERROR_PATCHWELCOME;
651 memset(s->upscale_h, 0, sizeof(s->upscale_h));
652 memset(s->upscale_v, 0, sizeof(s->upscale_v));
653 if (s->nb_components == 3) {
654 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
655 } else if (s->nb_components != 1) {
656 av_log(s->avctx, AV_LOG_ERROR, "Unsupported number of components %d\n", s->nb_components);
657 return AVERROR_PATCHWELCOME;
658 } else if (s->palette_index && s->bits <= 8)
659 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
660 else if (s->bits <= 8)
661 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
663 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
666 s->pix_desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
668 av_log(s->avctx, AV_LOG_ERROR, "Could not get a pixel format descriptor.\n");
672 if (s->avctx->pix_fmt == s->hwaccel_sw_pix_fmt && !size_change) {
673 s->avctx->pix_fmt = s->hwaccel_pix_fmt;
675 enum AVPixelFormat pix_fmts[] = {
676 #if CONFIG_MJPEG_NVDEC_HWACCEL
679 #if CONFIG_MJPEG_VAAPI_HWACCEL
685 s->hwaccel_pix_fmt = ff_get_format(s->avctx, pix_fmts);
686 if (s->hwaccel_pix_fmt < 0)
687 return AVERROR(EINVAL);
689 s->hwaccel_sw_pix_fmt = s->avctx->pix_fmt;
690 s->avctx->pix_fmt = s->hwaccel_pix_fmt;
693 if (s->avctx->skip_frame == AVDISCARD_ALL) {
694 s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
695 s->picture_ptr->key_frame = 1;
700 av_frame_unref(s->picture_ptr);
701 if (ff_get_buffer(s->avctx, s->picture_ptr, AV_GET_BUFFER_FLAG_REF) < 0)
703 s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
704 s->picture_ptr->key_frame = 1;
707 for (i = 0; i < 4; i++)
708 s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;
710 ff_dlog(s->avctx, "%d %d %d %d %d %d\n",
711 s->width, s->height, s->linesize[0], s->linesize[1],
712 s->interlaced, s->avctx->height);
714 if (len != (8 + (3 * nb_components)))
715 av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len);
718 if ((s->rgb && !s->lossless && !s->ls) ||
719 (!s->rgb && s->ls && s->nb_components > 1)) {
720 av_log(s->avctx, AV_LOG_ERROR, "Unsupported coding and pixel format combination\n");
721 return AVERROR_PATCHWELCOME;
724 /* totally blank picture as progressive JPEG will only add details to it */
725 if (s->progressive) {
726 int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8);
727 int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8);
728 for (i = 0; i < s->nb_components; i++) {
729 int size = bw * bh * s->h_count[i] * s->v_count[i];
730 av_freep(&s->blocks[i]);
731 av_freep(&s->last_nnz[i]);
732 s->blocks[i] = av_mallocz_array(size, sizeof(**s->blocks));
733 s->last_nnz[i] = av_mallocz_array(size, sizeof(**s->last_nnz));
734 if (!s->blocks[i] || !s->last_nnz[i])
735 return AVERROR(ENOMEM);
736 s->block_stride[i] = bw * s->h_count[i];
738 memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
741 if (s->avctx->hwaccel) {
742 s->hwaccel_picture_private =
743 av_mallocz(s->avctx->hwaccel->frame_priv_data_size);
744 if (!s->hwaccel_picture_private)
745 return AVERROR(ENOMEM);
747 ret = s->avctx->hwaccel->start_frame(s->avctx, s->raw_image_buffer,
748 s->raw_image_buffer_size);
756 static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index)
759 code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
760 if (code < 0 || code > 16) {
761 av_log(s->avctx, AV_LOG_WARNING,
762 "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n",
763 0, dc_index, &s->vlcs[0][dc_index]);
768 return get_xbits(&s->gb, code);
773 /* decode block and dequantize */
774 static int decode_block(MJpegDecodeContext *s, int16_t *block, int component,
775 int dc_index, int ac_index, uint16_t *quant_matrix)
777 int code, i, j, level, val;
780 val = mjpeg_decode_dc(s, dc_index);
781 if (val == 0xfffff) {
782 av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
783 return AVERROR_INVALIDDATA;
785 val = val * (unsigned)quant_matrix[0] + s->last_dc[component];
786 val = av_clip_int16(val);
787 s->last_dc[component] = val;
791 {OPEN_READER(re, &s->gb);
793 UPDATE_CACHE(re, &s->gb);
794 GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2);
796 i += ((unsigned)code) >> 4;
799 if (code > MIN_CACHE_BITS - 16)
800 UPDATE_CACHE(re, &s->gb);
803 int cache = GET_CACHE(re, &s->gb);
804 int sign = (~cache) >> 31;
805 level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
808 LAST_SKIP_BITS(re, &s->gb, code);
811 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
812 return AVERROR_INVALIDDATA;
814 j = s->scantable.permutated[i];
815 block[j] = level * quant_matrix[i];
818 CLOSE_READER(re, &s->gb);}
823 static int decode_dc_progressive(MJpegDecodeContext *s, int16_t *block,
824 int component, int dc_index,
825 uint16_t *quant_matrix, int Al)
828 s->bdsp.clear_block(block);
829 val = mjpeg_decode_dc(s, dc_index);
830 if (val == 0xfffff) {
831 av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
832 return AVERROR_INVALIDDATA;
834 val = (val * (quant_matrix[0] << Al)) + s->last_dc[component];
835 s->last_dc[component] = val;
840 /* decode block and dequantize - progressive JPEG version */
841 static int decode_block_progressive(MJpegDecodeContext *s, int16_t *block,
842 uint8_t *last_nnz, int ac_index,
843 uint16_t *quant_matrix,
844 int ss, int se, int Al, int *EOBRUN)
846 int code, i, j, val, run;
855 OPEN_READER(re, &s->gb);
856 for (i = ss; ; i++) {
857 UPDATE_CACHE(re, &s->gb);
858 GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
860 run = ((unsigned) code) >> 4;
864 if (code > MIN_CACHE_BITS - 16)
865 UPDATE_CACHE(re, &s->gb);
868 int cache = GET_CACHE(re, &s->gb);
869 int sign = (~cache) >> 31;
870 level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
873 LAST_SKIP_BITS(re, &s->gb, code);
877 j = s->scantable.permutated[se];
878 block[j] = level * (quant_matrix[se] << Al);
881 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
882 return AVERROR_INVALIDDATA;
884 j = s->scantable.permutated[i];
885 block[j] = level * (quant_matrix[i] << Al);
887 if (run == 0xF) {// ZRL - skip 15 coefficients
890 av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
891 return AVERROR_INVALIDDATA;
896 UPDATE_CACHE(re, &s->gb);
897 val += NEG_USR32(GET_CACHE(re, &s->gb), run);
898 LAST_SKIP_BITS(re, &s->gb, run);
905 CLOSE_READER(re, &s->gb);
914 #define REFINE_BIT(j) { \
915 UPDATE_CACHE(re, &s->gb); \
916 sign = block[j] >> 15; \
917 block[j] += SHOW_UBITS(re, &s->gb, 1) * \
918 ((quant_matrix[i] ^ sign) - sign) << Al; \
919 LAST_SKIP_BITS(re, &s->gb, 1); \
927 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \
932 j = s->scantable.permutated[i]; \
935 else if (run-- == 0) \
939 /* decode block and dequantize - progressive JPEG refinement pass */
940 static int decode_block_refinement(MJpegDecodeContext *s, int16_t *block,
942 int ac_index, uint16_t *quant_matrix,
943 int ss, int se, int Al, int *EOBRUN)
945 int code, i = ss, j, sign, val, run;
946 int last = FFMIN(se, *last_nnz);
948 OPEN_READER(re, &s->gb);
953 UPDATE_CACHE(re, &s->gb);
954 GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
957 run = ((unsigned) code) >> 4;
958 UPDATE_CACHE(re, &s->gb);
959 val = SHOW_UBITS(re, &s->gb, 1);
960 LAST_SKIP_BITS(re, &s->gb, 1);
962 j = s->scantable.permutated[i];
964 block[j] = ((quant_matrix[i] << Al) ^ val) - val;
968 CLOSE_READER(re, &s->gb);
972 run = ((unsigned) code) >> 4;
979 UPDATE_CACHE(re, &s->gb);
980 run += SHOW_UBITS(re, &s->gb, val);
981 LAST_SKIP_BITS(re, &s->gb, val);
993 for (; i <= last; i++) {
994 j = s->scantable.permutated[i];
998 CLOSE_READER(re, &s->gb);
1005 static int handle_rstn(MJpegDecodeContext *s, int nb_components)
1010 if (s->restart_interval) {
1012 if(s->restart_count == 0 && s->avctx->codec_id == AV_CODEC_ID_THP){
1013 align_get_bits(&s->gb);
1014 for (i = 0; i < nb_components; i++) /* reset dc */
1015 s->last_dc[i] = (4 << s->bits);
1018 i = 8 + ((-get_bits_count(&s->gb)) & 7);
1020 if (s->restart_count == 0) {
1021 if( show_bits(&s->gb, i) == (1 << i) - 1
1022 || show_bits(&s->gb, i) == 0xFF) {
1023 int pos = get_bits_count(&s->gb);
1024 align_get_bits(&s->gb);
1025 while (get_bits_left(&s->gb) >= 8 && show_bits(&s->gb, 8) == 0xFF)
1026 skip_bits(&s->gb, 8);
1027 if (get_bits_left(&s->gb) >= 8 && (get_bits(&s->gb, 8) & 0xF8) == 0xD0) {
1028 for (i = 0; i < nb_components; i++) /* reset dc */
1029 s->last_dc[i] = (4 << s->bits);
1032 skip_bits_long(&s->gb, pos - get_bits_count(&s->gb));
1039 static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int predictor, int point_transform)
1042 uint16_t (*buffer)[4];
1043 int left[4], top[4], topleft[4];
1044 const int linesize = s->linesize[0];
1045 const int mask = ((1 << s->bits) - 1) << point_transform;
1046 int resync_mb_y = 0;
1047 int resync_mb_x = 0;
1049 if (s->nb_components != 3 && s->nb_components != 4)
1050 return AVERROR_INVALIDDATA;
1051 if (s->v_max != 1 || s->h_max != 1 || !s->lossless)
1052 return AVERROR_INVALIDDATA;
1055 s->restart_count = s->restart_interval;
1057 av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size,
1058 (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
1059 if (!s->ljpeg_buffer)
1060 return AVERROR(ENOMEM);
1062 buffer = s->ljpeg_buffer;
1064 for (i = 0; i < 4; i++)
1065 buffer[0][i] = 1 << (s->bits - 1);
1067 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1068 uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y);
1070 if (s->interlaced && s->bottom_field)
1071 ptr += linesize >> 1;
1073 for (i = 0; i < 4; i++)
1074 top[i] = left[i] = topleft[i] = buffer[0][i];
1076 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1077 int modified_predictor = predictor;
1079 if (get_bits_left(&s->gb) < 1) {
1080 av_log(s->avctx, AV_LOG_ERROR, "bitstream end in rgb_scan\n");
1081 return AVERROR_INVALIDDATA;
1084 if (s->restart_interval && !s->restart_count){
1085 s->restart_count = s->restart_interval;
1089 top[i] = left[i]= topleft[i]= 1 << (s->bits - 1);
1091 if (mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || !mb_x)
1092 modified_predictor = 1;
1094 for (i=0;i<nb_components;i++) {
1097 topleft[i] = top[i];
1098 top[i] = buffer[mb_x][i];
1100 PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
1102 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1106 left[i] = buffer[mb_x][i] =
1107 mask & (pred + (unsigned)(dc * (1 << point_transform)));
1110 if (s->restart_interval && !--s->restart_count) {
1111 align_get_bits(&s->gb);
1112 skip_bits(&s->gb, 16); /* skip RSTn */
1115 if (s->rct && s->nb_components == 4) {
1116 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1117 ptr[4*mb_x + 2] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
1118 ptr[4*mb_x + 1] = buffer[mb_x][1] + ptr[4*mb_x + 2];
1119 ptr[4*mb_x + 3] = buffer[mb_x][2] + ptr[4*mb_x + 2];
1120 ptr[4*mb_x + 0] = buffer[mb_x][3];
1122 } else if (s->nb_components == 4) {
1123 for(i=0; i<nb_components; i++) {
1124 int c= s->comp_index[i];
1126 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1127 ptr[4*mb_x+3-c] = buffer[mb_x][i];
1129 } else if(s->bits == 9) {
1130 return AVERROR_PATCHWELCOME;
1132 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1133 ((uint16_t*)ptr)[4*mb_x+c] = buffer[mb_x][i];
1137 } else if (s->rct) {
1138 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1139 ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
1140 ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
1141 ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
1143 } else if (s->pegasus_rct) {
1144 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1145 ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2]) >> 2);
1146 ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
1147 ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
1150 for(i=0; i<nb_components; i++) {
1151 int c= s->comp_index[i];
1153 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1154 ptr[3*mb_x+2-c] = buffer[mb_x][i];
1156 } else if(s->bits == 9) {
1157 return AVERROR_PATCHWELCOME;
1159 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1160 ((uint16_t*)ptr)[3*mb_x+2-c] = buffer[mb_x][i];
1169 static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
1170 int point_transform, int nb_components)
1172 int i, mb_x, mb_y, mask;
1173 int bits= (s->bits+7)&~7;
1174 int resync_mb_y = 0;
1175 int resync_mb_x = 0;
1177 point_transform += bits - s->bits;
1178 mask = ((1 << s->bits) - 1) << point_transform;
1180 av_assert0(nb_components>=1 && nb_components<=4);
1182 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1183 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1184 if (get_bits_left(&s->gb) < 1) {
1185 av_log(s->avctx, AV_LOG_ERROR, "bitstream end in yuv_scan\n");
1186 return AVERROR_INVALIDDATA;
1188 if (s->restart_interval && !s->restart_count){
1189 s->restart_count = s->restart_interval;
1194 if(!mb_x || mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || s->interlaced){
1195 int toprow = mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x;
1196 int leftcol = !mb_x || mb_y == resync_mb_y && mb_x == resync_mb_x;
1197 for (i = 0; i < nb_components; i++) {
1200 int n, h, v, x, y, c, j, linesize;
1201 n = s->nb_blocks[i];
1202 c = s->comp_index[i];
1207 linesize= s->linesize[c];
1209 if(bits>8) linesize /= 2;
1211 for(j=0; j<n; j++) {
1214 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1217 if ( h * mb_x + x >= s->width
1218 || v * mb_y + y >= s->height) {
1220 } else if (bits<=8) {
1221 ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
1223 if(x==0 && leftcol){
1224 pred= 1 << (bits - 1);
1229 if(x==0 && leftcol){
1230 pred= ptr[-linesize];
1232 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
1236 if (s->interlaced && s->bottom_field)
1237 ptr += linesize >> 1;
1239 *ptr= pred + ((unsigned)dc << point_transform);
1241 ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
1243 if(x==0 && leftcol){
1244 pred= 1 << (bits - 1);
1249 if(x==0 && leftcol){
1250 pred= ptr16[-linesize];
1252 PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
1256 if (s->interlaced && s->bottom_field)
1257 ptr16 += linesize >> 1;
1259 *ptr16= pred + ((unsigned)dc << point_transform);
1268 for (i = 0; i < nb_components; i++) {
1271 int n, h, v, x, y, c, j, linesize, dc;
1272 n = s->nb_blocks[i];
1273 c = s->comp_index[i];
1278 linesize = s->linesize[c];
1280 if(bits>8) linesize /= 2;
1282 for (j = 0; j < n; j++) {
1285 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1288 if ( h * mb_x + x >= s->width
1289 || v * mb_y + y >= s->height) {
1291 } else if (bits<=8) {
1292 ptr = s->picture_ptr->data[c] +
1293 (linesize * (v * mb_y + y)) +
1294 (h * mb_x + x); //FIXME optimize this crap
1295 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
1298 *ptr = pred + ((unsigned)dc << point_transform);
1300 ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
1301 PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
1304 *ptr16= pred + ((unsigned)dc << point_transform);
1314 if (s->restart_interval && !--s->restart_count) {
1315 align_get_bits(&s->gb);
1316 skip_bits(&s->gb, 16); /* skip RSTn */
1323 static av_always_inline void mjpeg_copy_block(MJpegDecodeContext *s,
1324 uint8_t *dst, const uint8_t *src,
1325 int linesize, int lowres)
1328 case 0: s->hdsp.put_pixels_tab[1][0](dst, src, linesize, 8);
1330 case 1: copy_block4(dst, src, linesize, linesize, 4);
1332 case 2: copy_block2(dst, src, linesize, linesize, 2);
1334 case 3: *dst = *src;
1339 static void shift_output(MJpegDecodeContext *s, uint8_t *ptr, int linesize)
1341 int block_x, block_y;
1342 int size = 8 >> s->avctx->lowres;
1344 for (block_y=0; block_y<size; block_y++)
1345 for (block_x=0; block_x<size; block_x++)
1346 *(uint16_t*)(ptr + 2*block_x + block_y*linesize) <<= 16 - s->bits;
1348 for (block_y=0; block_y<size; block_y++)
1349 for (block_x=0; block_x<size; block_x++)
1350 *(ptr + block_x + block_y*linesize) <<= 8 - s->bits;
1354 static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
1355 int Al, const uint8_t *mb_bitmask,
1356 int mb_bitmask_size,
1357 const AVFrame *reference)
1359 int i, mb_x, mb_y, chroma_h_shift, chroma_v_shift, chroma_width, chroma_height;
1360 uint8_t *data[MAX_COMPONENTS];
1361 const uint8_t *reference_data[MAX_COMPONENTS];
1362 int linesize[MAX_COMPONENTS];
1363 GetBitContext mb_bitmask_gb = {0}; // initialize to silence gcc warning
1364 int bytes_per_pixel = 1 + (s->bits > 8);
1367 if (mb_bitmask_size != (s->mb_width * s->mb_height + 7)>>3) {
1368 av_log(s->avctx, AV_LOG_ERROR, "mb_bitmask_size mismatches\n");
1369 return AVERROR_INVALIDDATA;
1371 init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
1374 s->restart_count = 0;
1376 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &chroma_h_shift,
1378 chroma_width = AV_CEIL_RSHIFT(s->width, chroma_h_shift);
1379 chroma_height = AV_CEIL_RSHIFT(s->height, chroma_v_shift);
1381 for (i = 0; i < nb_components; i++) {
1382 int c = s->comp_index[i];
1383 data[c] = s->picture_ptr->data[c];
1384 reference_data[c] = reference ? reference->data[c] : NULL;
1385 linesize[c] = s->linesize[c];
1386 s->coefs_finished[c] |= 1;
1389 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1390 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1391 const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
1393 if (s->restart_interval && !s->restart_count)
1394 s->restart_count = s->restart_interval;
1396 if (get_bits_left(&s->gb) < 0) {
1397 av_log(s->avctx, AV_LOG_ERROR, "overread %d\n",
1398 -get_bits_left(&s->gb));
1399 return AVERROR_INVALIDDATA;
1401 for (i = 0; i < nb_components; i++) {
1403 int n, h, v, x, y, c, j;
1405 n = s->nb_blocks[i];
1406 c = s->comp_index[i];
1411 for (j = 0; j < n; j++) {
1412 block_offset = (((linesize[c] * (v * mb_y + y) * 8) +
1413 (h * mb_x + x) * 8 * bytes_per_pixel) >> s->avctx->lowres);
1415 if (s->interlaced && s->bottom_field)
1416 block_offset += linesize[c] >> 1;
1417 if ( 8*(h * mb_x + x) < ((c == 1) || (c == 2) ? chroma_width : s->width)
1418 && 8*(v * mb_y + y) < ((c == 1) || (c == 2) ? chroma_height : s->height)) {
1419 ptr = data[c] + block_offset;
1422 if (!s->progressive) {
1425 mjpeg_copy_block(s, ptr, reference_data[c] + block_offset,
1426 linesize[c], s->avctx->lowres);
1429 s->bdsp.clear_block(s->block);
1430 if (decode_block(s, s->block, i,
1431 s->dc_index[i], s->ac_index[i],
1432 s->quant_matrixes[s->quant_sindex[i]]) < 0) {
1433 av_log(s->avctx, AV_LOG_ERROR,
1434 "error y=%d x=%d\n", mb_y, mb_x);
1435 return AVERROR_INVALIDDATA;
1438 s->idsp.idct_put(ptr, linesize[c], s->block);
1440 shift_output(s, ptr, linesize[c]);
1444 int block_idx = s->block_stride[c] * (v * mb_y + y) +
1446 int16_t *block = s->blocks[c][block_idx];
1448 block[0] += get_bits1(&s->gb) *
1449 s->quant_matrixes[s->quant_sindex[i]][0] << Al;
1450 else if (decode_dc_progressive(s, block, i, s->dc_index[i],
1451 s->quant_matrixes[s->quant_sindex[i]],
1453 av_log(s->avctx, AV_LOG_ERROR,
1454 "error y=%d x=%d\n", mb_y, mb_x);
1455 return AVERROR_INVALIDDATA;
1458 ff_dlog(s->avctx, "mb: %d %d processed\n", mb_y, mb_x);
1459 ff_dlog(s->avctx, "%d %d %d %d %d %d %d %d \n",
1460 mb_x, mb_y, x, y, c, s->bottom_field,
1461 (v * mb_y + y) * 8, (h * mb_x + x) * 8);
1469 handle_rstn(s, nb_components);
1475 static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
1476 int se, int Ah, int Al)
1480 int c = s->comp_index[0];
1481 uint16_t *quant_matrix = s->quant_matrixes[s->quant_sindex[0]];
1483 av_assert0(ss>=0 && Ah>=0 && Al>=0);
1484 if (se < ss || se > 63) {
1485 av_log(s->avctx, AV_LOG_ERROR, "SS/SE %d/%d is invalid\n", ss, se);
1486 return AVERROR_INVALIDDATA;
1489 // s->coefs_finished is a bitmask for coefficients coded
1490 // ss and se are parameters telling start and end coefficients
1491 s->coefs_finished[c] |= (2ULL << se) - (1ULL << ss);
1493 s->restart_count = 0;
1495 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1496 int block_idx = mb_y * s->block_stride[c];
1497 int16_t (*block)[64] = &s->blocks[c][block_idx];
1498 uint8_t *last_nnz = &s->last_nnz[c][block_idx];
1499 if (get_bits_left(&s->gb) <= 0) {
1500 av_log(s->avctx, AV_LOG_ERROR, "bitstream truncated in mjpeg_decode_scan_progressive_ac\n");
1501 return AVERROR_INVALIDDATA;
1503 for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
1505 if (s->restart_interval && !s->restart_count)
1506 s->restart_count = s->restart_interval;
1509 ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
1510 quant_matrix, ss, se, Al, &EOBRUN);
1512 ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
1513 quant_matrix, ss, se, Al, &EOBRUN);
1515 av_log(s->avctx, AV_LOG_ERROR,
1516 "error y=%d x=%d\n", mb_y, mb_x);
1517 return AVERROR_INVALIDDATA;
1520 if (handle_rstn(s, 0))
1527 static void mjpeg_idct_scan_progressive_ac(MJpegDecodeContext *s)
1531 const int bytes_per_pixel = 1 + (s->bits > 8);
1532 const int block_size = s->lossless ? 1 : 8;
1534 for (c = 0; c < s->nb_components; c++) {
1535 uint8_t *data = s->picture_ptr->data[c];
1536 int linesize = s->linesize[c];
1537 int h = s->h_max / s->h_count[c];
1538 int v = s->v_max / s->v_count[c];
1539 int mb_width = (s->width + h * block_size - 1) / (h * block_size);
1540 int mb_height = (s->height + v * block_size - 1) / (v * block_size);
1542 if (~s->coefs_finished[c])
1543 av_log(s->avctx, AV_LOG_WARNING, "component %d is incomplete\n", c);
1545 if (s->interlaced && s->bottom_field)
1546 data += linesize >> 1;
1548 for (mb_y = 0; mb_y < mb_height; mb_y++) {
1549 uint8_t *ptr = data + (mb_y * linesize * 8 >> s->avctx->lowres);
1550 int block_idx = mb_y * s->block_stride[c];
1551 int16_t (*block)[64] = &s->blocks[c][block_idx];
1552 for (mb_x = 0; mb_x < mb_width; mb_x++, block++) {
1553 s->idsp.idct_put(ptr, linesize, *block);
1555 shift_output(s, ptr, linesize);
1556 ptr += bytes_per_pixel*8 >> s->avctx->lowres;
1562 int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask,
1563 int mb_bitmask_size, const AVFrame *reference)
1565 int len, nb_components, i, h, v, predictor, point_transform;
1567 const int block_size = s->lossless ? 1 : 8;
1568 int ilv, prev_shift;
1570 if (!s->got_picture) {
1571 av_log(s->avctx, AV_LOG_WARNING,
1572 "Can not process SOS before SOF, skipping\n");
1577 if (reference->width != s->picture_ptr->width ||
1578 reference->height != s->picture_ptr->height ||
1579 reference->format != s->picture_ptr->format) {
1580 av_log(s->avctx, AV_LOG_ERROR, "Reference mismatching\n");
1581 return AVERROR_INVALIDDATA;
1585 /* XXX: verify len field validity */
1586 len = get_bits(&s->gb, 16);
1587 nb_components = get_bits(&s->gb, 8);
1588 if (nb_components == 0 || nb_components > MAX_COMPONENTS) {
1589 avpriv_report_missing_feature(s->avctx,
1590 "decode_sos: nb_components (%d)",
1592 return AVERROR_PATCHWELCOME;
1594 if (len != 6 + 2 * nb_components) {
1595 av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len);
1596 return AVERROR_INVALIDDATA;
1598 for (i = 0; i < nb_components; i++) {
1599 id = get_bits(&s->gb, 8) - 1;
1600 av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id);
1601 /* find component index */
1602 for (index = 0; index < s->nb_components; index++)
1603 if (id == s->component_id[index])
1605 if (index == s->nb_components) {
1606 av_log(s->avctx, AV_LOG_ERROR,
1607 "decode_sos: index(%d) out of components\n", index);
1608 return AVERROR_INVALIDDATA;
1610 /* Metasoft MJPEG codec has Cb and Cr swapped */
1611 if (s->avctx->codec_tag == MKTAG('M', 'T', 'S', 'J')
1612 && nb_components == 3 && s->nb_components == 3 && i)
1615 s->quant_sindex[i] = s->quant_index[index];
1616 s->nb_blocks[i] = s->h_count[index] * s->v_count[index];
1617 s->h_scount[i] = s->h_count[index];
1618 s->v_scount[i] = s->v_count[index];
1620 if((nb_components == 1 || nb_components == 3) && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P)
1621 index = (index+2)%3;
1623 s->comp_index[i] = index;
1625 s->dc_index[i] = get_bits(&s->gb, 4);
1626 s->ac_index[i] = get_bits(&s->gb, 4);
1628 if (s->dc_index[i] < 0 || s->ac_index[i] < 0 ||
1629 s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
1631 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))
1635 predictor = get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
1636 ilv = get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */
1637 if(s->avctx->codec_tag != AV_RL32("CJPG")){
1638 prev_shift = get_bits(&s->gb, 4); /* Ah */
1639 point_transform = get_bits(&s->gb, 4); /* Al */
1641 prev_shift = point_transform = 0;
1643 if (nb_components > 1) {
1644 /* interleaved stream */
1645 s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size);
1646 s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size);
1647 } else if (!s->ls) { /* skip this for JPEG-LS */
1648 h = s->h_max / s->h_scount[0];
1649 v = s->v_max / s->v_scount[0];
1650 s->mb_width = (s->width + h * block_size - 1) / (h * block_size);
1651 s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
1652 s->nb_blocks[0] = 1;
1657 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1658 av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d skip:%d %s comp:%d\n",
1659 s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
1660 predictor, point_transform, ilv, s->bits, s->mjpb_skiptosod,
1661 s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""), nb_components);
1664 /* mjpeg-b can have padding bytes between sos and image data, skip them */
1665 for (i = s->mjpb_skiptosod; i > 0; i--)
1666 skip_bits(&s->gb, 8);
1669 for (i = 0; i < nb_components; i++)
1670 s->last_dc[i] = (4 << s->bits);
1672 if (s->avctx->hwaccel) {
1673 int bytes_to_start = get_bits_count(&s->gb) / 8;
1674 av_assert0(bytes_to_start >= 0 &&
1675 s->raw_scan_buffer_size >= bytes_to_start);
1677 ret = s->avctx->hwaccel->decode_slice(s->avctx,
1678 s->raw_scan_buffer + bytes_to_start,
1679 s->raw_scan_buffer_size - bytes_to_start);
1683 } else if (s->lossless) {
1684 av_assert0(s->picture_ptr == s->picture);
1685 if (CONFIG_JPEGLS_DECODER && s->ls) {
1687 // reset_ls_coding_parameters(s, 0);
1689 if ((ret = ff_jpegls_decode_picture(s, predictor,
1690 point_transform, ilv)) < 0)
1694 if ((ret = ljpeg_decode_rgb_scan(s, nb_components, predictor, point_transform)) < 0)
1697 if ((ret = ljpeg_decode_yuv_scan(s, predictor,
1699 nb_components)) < 0)
1704 if (s->progressive && predictor) {
1705 av_assert0(s->picture_ptr == s->picture);
1706 if ((ret = mjpeg_decode_scan_progressive_ac(s, predictor,
1708 point_transform)) < 0)
1711 if ((ret = mjpeg_decode_scan(s, nb_components,
1712 prev_shift, point_transform,
1713 mb_bitmask, mb_bitmask_size, reference)) < 0)
1718 if (s->interlaced &&
1719 get_bits_left(&s->gb) > 32 &&
1720 show_bits(&s->gb, 8) == 0xFF) {
1721 GetBitContext bak = s->gb;
1722 align_get_bits(&bak);
1723 if (show_bits(&bak, 16) == 0xFFD1) {
1724 av_log(s->avctx, AV_LOG_DEBUG, "AVRn interlaced picture marker found\n");
1726 skip_bits(&s->gb, 16);
1727 s->bottom_field ^= 1;
1736 av_log(s->avctx, AV_LOG_ERROR, "decode_sos: ac/dc index out of range\n");
1737 return AVERROR_INVALIDDATA;
1740 static int mjpeg_decode_dri(MJpegDecodeContext *s)
1742 if (get_bits(&s->gb, 16) != 4)
1743 return AVERROR_INVALIDDATA;
1744 s->restart_interval = get_bits(&s->gb, 16);
1745 s->restart_count = 0;
1746 av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n",
1747 s->restart_interval);
1752 static int mjpeg_decode_app(MJpegDecodeContext *s)
1756 len = get_bits(&s->gb, 16);
1758 return AVERROR_INVALIDDATA;
1759 if (8 * len > get_bits_left(&s->gb))
1760 return AVERROR_INVALIDDATA;
1762 id = get_bits_long(&s->gb, 32);
1765 if (s->avctx->debug & FF_DEBUG_STARTCODE)
1766 av_log(s->avctx, AV_LOG_DEBUG, "APPx (%s / %8X) len=%d\n",
1767 av_fourcc2str(av_bswap32(id)), id, len);
1769 /* Buggy AVID, it puts EOI only at every 10th frame. */
1770 /* Also, this fourcc is used by non-avid files too, it holds some
1771 information, but it's always present in AVID-created files. */
1772 if (id == AV_RB32("AVI1")) {
1778 4bytes field_size_less_padding
1781 i = get_bits(&s->gb, 8); len--;
1782 av_log(s->avctx, AV_LOG_DEBUG, "polarity %d\n", i);
1786 if (id == AV_RB32("JFIF")) {
1787 int t_w, t_h, v1, v2;
1790 skip_bits(&s->gb, 8); /* the trailing zero-byte */
1791 v1 = get_bits(&s->gb, 8);
1792 v2 = get_bits(&s->gb, 8);
1793 skip_bits(&s->gb, 8);
1795 s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 16);
1796 s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 16);
1797 if ( s->avctx->sample_aspect_ratio.num <= 0
1798 || s->avctx->sample_aspect_ratio.den <= 0) {
1799 s->avctx->sample_aspect_ratio.num = 0;
1800 s->avctx->sample_aspect_ratio.den = 1;
1803 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1804 av_log(s->avctx, AV_LOG_INFO,
1805 "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
1807 s->avctx->sample_aspect_ratio.num,
1808 s->avctx->sample_aspect_ratio.den);
1812 t_w = get_bits(&s->gb, 8);
1813 t_h = get_bits(&s->gb, 8);
1815 /* skip thumbnail */
1816 if (len -10 - (t_w * t_h * 3) > 0)
1817 len -= t_w * t_h * 3;
1824 if ( id == AV_RB32("Adob")
1826 && show_bits(&s->gb, 8) == 'e'
1827 && show_bits_long(&s->gb, 32) != AV_RB32("e_CM")) {
1828 skip_bits(&s->gb, 8); /* 'e' */
1829 skip_bits(&s->gb, 16); /* version */
1830 skip_bits(&s->gb, 16); /* flags0 */
1831 skip_bits(&s->gb, 16); /* flags1 */
1832 s->adobe_transform = get_bits(&s->gb, 8);
1833 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1834 av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found, transform=%d\n", s->adobe_transform);
1839 if (id == AV_RB32("LJIF")) {
1841 int pegasus_rct = s->pegasus_rct;
1842 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1843 av_log(s->avctx, AV_LOG_INFO,
1844 "Pegasus lossless jpeg header found\n");
1845 skip_bits(&s->gb, 16); /* version ? */
1846 skip_bits(&s->gb, 16); /* unknown always 0? */
1847 skip_bits(&s->gb, 16); /* unknown always 0? */
1848 skip_bits(&s->gb, 16); /* unknown always 0? */
1849 switch (i=get_bits(&s->gb, 8)) {
1859 av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace %d\n", i);
1864 if (rgb != s->rgb || pegasus_rct != s->pegasus_rct) {
1865 av_log(s->avctx, AV_LOG_WARNING, "Mismatching LJIF tag\n");
1870 s->pegasus_rct = pegasus_rct;
1874 if (id == AV_RL32("colr") && len > 0) {
1875 s->colr = get_bits(&s->gb, 8);
1876 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1877 av_log(s->avctx, AV_LOG_INFO, "COLR %d\n", s->colr);
1881 if (id == AV_RL32("xfrm") && len > 0) {
1882 s->xfrm = get_bits(&s->gb, 8);
1883 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1884 av_log(s->avctx, AV_LOG_INFO, "XFRM %d\n", s->xfrm);
1889 /* JPS extension by VRex */
1890 if (s->start_code == APP3 && id == AV_RB32("_JPS") && len >= 10) {
1891 int flags, layout, type;
1892 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1893 av_log(s->avctx, AV_LOG_INFO, "_JPSJPS_\n");
1895 skip_bits(&s->gb, 32); len -= 4; /* JPS_ */
1896 skip_bits(&s->gb, 16); len -= 2; /* block length */
1897 skip_bits(&s->gb, 8); /* reserved */
1898 flags = get_bits(&s->gb, 8);
1899 layout = get_bits(&s->gb, 8);
1900 type = get_bits(&s->gb, 8);
1903 s->stereo3d = av_stereo3d_alloc();
1908 s->stereo3d->type = AV_STEREO3D_2D;
1909 } else if (type == 1) {
1912 s->stereo3d->type = AV_STEREO3D_LINES;
1915 s->stereo3d->type = AV_STEREO3D_SIDEBYSIDE;
1918 s->stereo3d->type = AV_STEREO3D_TOPBOTTOM;
1921 if (!(flags & 0x04)) {
1922 s->stereo3d->flags = AV_STEREO3D_FLAG_INVERT;
1929 if (s->start_code == APP1 && id == AV_RB32("Exif") && len >= 2) {
1930 GetByteContext gbytes;
1931 int ret, le, ifd_offset, bytes_read;
1932 const uint8_t *aligned;
1934 skip_bits(&s->gb, 16); // skip padding
1937 // init byte wise reading
1938 aligned = align_get_bits(&s->gb);
1939 bytestream2_init(&gbytes, aligned, len);
1942 ret = ff_tdecode_header(&gbytes, &le, &ifd_offset);
1944 av_log(s->avctx, AV_LOG_ERROR, "mjpeg: invalid TIFF header in EXIF data\n");
1946 bytestream2_seek(&gbytes, ifd_offset, SEEK_SET);
1948 // read 0th IFD and store the metadata
1949 // (return values > 0 indicate the presence of subimage metadata)
1950 ret = ff_exif_decode_ifd(s->avctx, &gbytes, le, 0, &s->exif_metadata);
1952 av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error decoding EXIF data\n");
1956 bytes_read = bytestream2_tell(&gbytes);
1957 skip_bits(&s->gb, bytes_read << 3);
1964 if ((s->start_code == APP1) && (len > (0x28 - 8))) {
1965 id = get_bits_long(&s->gb, 32);
1968 if (id == AV_RB32("mjpg")) {
1971 4bytes pad field size
1979 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1980 av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n");
1984 if (s->start_code == APP2 && id == AV_RB32("ICC_") && len >= 10) {
1987 unsigned nummarkers;
1989 id = get_bits_long(&s->gb, 32);
1990 id2 = get_bits_long(&s->gb, 24);
1992 if (id != AV_RB32("PROF") || id2 != AV_RB24("ILE")) {
1993 av_log(s->avctx, AV_LOG_WARNING, "Invalid ICC_PROFILE header in APP2\n");
1997 skip_bits(&s->gb, 8);
1998 seqno = get_bits(&s->gb, 8);
2001 av_log(s->avctx, AV_LOG_WARNING, "Invalid sequence number in APP2\n");
2005 nummarkers = get_bits(&s->gb, 8);
2007 if (nummarkers == 0) {
2008 av_log(s->avctx, AV_LOG_WARNING, "Invalid number of markers coded in APP2\n");
2010 } else if (s->iccnum != 0 && nummarkers != s->iccnum) {
2011 av_log(s->avctx, AV_LOG_WARNING, "Mistmatch in coded number of ICC markers between markers\n");
2013 } else if (seqno > nummarkers) {
2014 av_log(s->avctx, AV_LOG_WARNING, "Mismatching sequence number and coded number of ICC markers\n");
2018 /* Allocate if this is the first APP2 we've seen. */
2019 if (s->iccnum == 0) {
2020 s->iccdata = av_mallocz(nummarkers * sizeof(*(s->iccdata)));
2021 s->iccdatalens = av_mallocz(nummarkers * sizeof(*(s->iccdatalens)));
2022 if (!s->iccdata || !s->iccdatalens) {
2023 av_log(s->avctx, AV_LOG_ERROR, "Could not allocate ICC data arrays\n");
2024 return AVERROR(ENOMEM);
2026 s->iccnum = nummarkers;
2029 if (s->iccdata[seqno - 1]) {
2030 av_log(s->avctx, AV_LOG_WARNING, "Duplicate ICC sequence number\n");
2034 s->iccdatalens[seqno - 1] = len;
2035 s->iccdata[seqno - 1] = av_malloc(len);
2036 if (!s->iccdata[seqno - 1]) {
2037 av_log(s->avctx, AV_LOG_ERROR, "Could not allocate ICC data buffer\n");
2038 return AVERROR(ENOMEM);
2041 memcpy(s->iccdata[seqno - 1], align_get_bits(&s->gb), len);
2042 skip_bits(&s->gb, len << 3);
2046 if (s->iccread > s->iccnum)
2047 av_log(s->avctx, AV_LOG_WARNING, "Read more ICC markers than are supposed to be coded\n");
2051 /* slow but needed for extreme adobe jpegs */
2053 av_log(s->avctx, AV_LOG_ERROR,
2054 "mjpeg: error, decode_app parser read over the end\n");
2056 skip_bits(&s->gb, 8);
2061 static int mjpeg_decode_com(MJpegDecodeContext *s)
2063 int len = get_bits(&s->gb, 16);
2064 if (len >= 2 && 8 * len - 16 <= get_bits_left(&s->gb)) {
2066 char *cbuf = av_malloc(len - 1);
2068 return AVERROR(ENOMEM);
2070 for (i = 0; i < len - 2; i++)
2071 cbuf[i] = get_bits(&s->gb, 8);
2072 if (i > 0 && cbuf[i - 1] == '\n')
2077 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
2078 av_log(s->avctx, AV_LOG_INFO, "comment: '%s'\n", cbuf);
2080 /* buggy avid, it puts EOI only at every 10th frame */
2081 if (!strncmp(cbuf, "AVID", 4)) {
2082 parse_avid(s, cbuf, len);
2083 } else if (!strcmp(cbuf, "CS=ITU601"))
2085 else if ((!strncmp(cbuf, "Intel(R) JPEG Library, version 1", 32) && s->avctx->codec_tag) ||
2086 (!strncmp(cbuf, "Metasoft MJPEG Codec", 20)))
2088 else if (!strcmp(cbuf, "MULTISCOPE II")) {
2089 s->avctx->sample_aspect_ratio = (AVRational) { 1, 2 };
2099 /* return the 8 bit start code value and update the search
2100 state. Return -1 if no start code found */
2101 static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
2103 const uint8_t *buf_ptr;
2108 buf_ptr = *pbuf_ptr;
2109 while (buf_end - buf_ptr > 1) {
2112 if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) {
2121 ff_dlog(NULL, "find_marker skipped %d bytes\n", skipped);
2122 *pbuf_ptr = buf_ptr;
2126 int ff_mjpeg_find_marker(MJpegDecodeContext *s,
2127 const uint8_t **buf_ptr, const uint8_t *buf_end,
2128 const uint8_t **unescaped_buf_ptr,
2129 int *unescaped_buf_size)
2132 start_code = find_marker(buf_ptr, buf_end);
2134 av_fast_padded_malloc(&s->buffer, &s->buffer_size, buf_end - *buf_ptr);
2136 return AVERROR(ENOMEM);
2138 /* unescape buffer of SOS, use special treatment for JPEG-LS */
2139 if (start_code == SOS && !s->ls) {
2140 const uint8_t *src = *buf_ptr;
2141 const uint8_t *ptr = src;
2142 uint8_t *dst = s->buffer;
2144 #define copy_data_segment(skip) do { \
2145 ptrdiff_t length = (ptr - src) - (skip); \
2147 memcpy(dst, src, length); \
2153 if (s->avctx->codec_id == AV_CODEC_ID_THP) {
2155 copy_data_segment(0);
2157 while (ptr < buf_end) {
2158 uint8_t x = *(ptr++);
2162 while (ptr < buf_end && x == 0xff) {
2167 /* 0xFF, 0xFF, ... */
2169 copy_data_segment(skip);
2171 /* decrement src as it is equal to ptr after the
2172 * copy_data_segment macro and we might want to
2173 * copy the current value of x later on */
2177 if (x < 0xd0 || x > 0xd7) {
2178 copy_data_segment(1);
2185 copy_data_segment(0);
2187 #undef copy_data_segment
2189 *unescaped_buf_ptr = s->buffer;
2190 *unescaped_buf_size = dst - s->buffer;
2191 memset(s->buffer + *unescaped_buf_size, 0,
2192 AV_INPUT_BUFFER_PADDING_SIZE);
2194 av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %"PTRDIFF_SPECIFIER" bytes\n",
2195 (buf_end - *buf_ptr) - (dst - s->buffer));
2196 } else if (start_code == SOS && s->ls) {
2197 const uint8_t *src = *buf_ptr;
2198 uint8_t *dst = s->buffer;
2204 while (src + t < buf_end) {
2205 uint8_t x = src[t++];
2207 while ((src + t < buf_end) && x == 0xff)
2216 init_put_bits(&pb, dst, t);
2218 /* unescape bitstream */
2220 uint8_t x = src[b++];
2221 put_bits(&pb, 8, x);
2222 if (x == 0xFF && b < t) {
2225 av_log(s->avctx, AV_LOG_WARNING, "Invalid escape sequence\n");
2228 put_bits(&pb, 7, x);
2232 flush_put_bits(&pb);
2234 *unescaped_buf_ptr = dst;
2235 *unescaped_buf_size = (bit_count + 7) >> 3;
2236 memset(s->buffer + *unescaped_buf_size, 0,
2237 AV_INPUT_BUFFER_PADDING_SIZE);
2239 *unescaped_buf_ptr = *buf_ptr;
2240 *unescaped_buf_size = buf_end - *buf_ptr;
2246 static void reset_icc_profile(MJpegDecodeContext *s)
2251 for (i = 0; i < s->iccnum; i++)
2252 av_freep(&s->iccdata[i]);
2253 av_freep(&s->iccdata);
2254 av_freep(&s->iccdatalens);
2260 int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
2263 AVFrame *frame = data;
2264 const uint8_t *buf = avpkt->data;
2265 int buf_size = avpkt->size;
2266 MJpegDecodeContext *s = avctx->priv_data;
2267 const uint8_t *buf_end, *buf_ptr;
2268 const uint8_t *unescaped_buf_ptr;
2270 int unescaped_buf_size;
2276 s->buf_size = buf_size;
2278 av_dict_free(&s->exif_metadata);
2279 av_freep(&s->stereo3d);
2280 s->adobe_transform = -1;
2283 reset_icc_profile(s);
2286 buf_end = buf + buf_size;
2287 while (buf_ptr < buf_end) {
2288 /* find start next marker */
2289 start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end,
2291 &unescaped_buf_size);
2293 if (start_code < 0) {
2295 } else if (unescaped_buf_size > INT_MAX / 8) {
2296 av_log(avctx, AV_LOG_ERROR,
2297 "MJPEG packet 0x%x too big (%d/%d), corrupt data?\n",
2298 start_code, unescaped_buf_size, buf_size);
2299 return AVERROR_INVALIDDATA;
2301 av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%"PTRDIFF_SPECIFIER"\n",
2302 start_code, buf_end - buf_ptr);
2304 ret = init_get_bits8(&s->gb, unescaped_buf_ptr, unescaped_buf_size);
2307 av_log(avctx, AV_LOG_ERROR, "invalid buffer\n");
2311 s->start_code = start_code;
2312 if (s->avctx->debug & FF_DEBUG_STARTCODE)
2313 av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
2315 /* process markers */
2316 if (start_code >= 0xd0 && start_code <= 0xd7) {
2317 av_log(avctx, AV_LOG_DEBUG,
2318 "restart marker: %d\n", start_code & 0x0f);
2320 } else if (start_code >= APP0 && start_code <= APP15) {
2321 if ((ret = mjpeg_decode_app(s)) < 0)
2322 av_log(avctx, AV_LOG_ERROR, "unable to decode APP fields: %s\n",
2325 } else if (start_code == COM) {
2326 ret = mjpeg_decode_com(s);
2329 } else if (start_code == DQT) {
2330 ret = ff_mjpeg_decode_dqt(s);
2337 if (!CONFIG_JPEGLS_DECODER &&
2338 (start_code == SOF48 || start_code == LSE)) {
2339 av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n");
2340 return AVERROR(ENOSYS);
2343 if (avctx->skip_frame == AVDISCARD_ALL) {
2344 switch(start_code) {
2359 switch (start_code) {
2361 s->restart_interval = 0;
2362 s->restart_count = 0;
2363 s->raw_image_buffer = buf_ptr;
2364 s->raw_image_buffer_size = buf_end - buf_ptr;
2365 /* nothing to do on SOI */
2368 if ((ret = ff_mjpeg_decode_dht(s)) < 0) {
2369 av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
2375 if (start_code == SOF0)
2376 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_BASELINE_DCT;
2378 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_EXTENDED_SEQUENTIAL_DCT;
2382 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2386 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_PROGRESSIVE_DCT;
2390 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2394 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_LOSSLESS;
2395 s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
2399 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2403 s->avctx->profile = FF_PROFILE_MJPEG_JPEG_LS;
2404 s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
2408 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2412 if (!CONFIG_JPEGLS_DECODER ||
2413 (ret = ff_jpegls_decode_lse(s)) < 0)
2418 if (!avctx->hwaccel && avctx->skip_frame != AVDISCARD_ALL &&
2419 s->progressive && s->cur_scan && s->got_picture)
2420 mjpeg_idct_scan_progressive_ac(s);
2422 if (!s->got_picture) {
2423 av_log(avctx, AV_LOG_WARNING,
2424 "Found EOI before any SOF, ignoring\n");
2427 if (s->interlaced) {
2428 s->bottom_field ^= 1;
2429 /* if not bottom field, do not output image yet */
2430 if (s->bottom_field == !s->interlace_polarity)
2433 if (avctx->skip_frame == AVDISCARD_ALL) {
2435 goto the_end_no_picture;
2437 if (s->avctx->hwaccel) {
2438 ret = s->avctx->hwaccel->end_frame(s->avctx);
2442 av_freep(&s->hwaccel_picture_private);
2444 if ((ret = av_frame_ref(frame, s->picture_ptr)) < 0)
2450 int qp = FFMAX3(s->qscale[0],
2453 int qpw = (s->width + 15) / 16;
2454 AVBufferRef *qp_table_buf = av_buffer_alloc(qpw);
2456 memset(qp_table_buf->data, qp, qpw);
2457 av_frame_set_qp_table(data, qp_table_buf, 0, FF_QSCALE_TYPE_MPEG1);
2460 if(avctx->debug & FF_DEBUG_QP)
2461 av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", qp);
2466 s->raw_scan_buffer = buf_ptr;
2467 s->raw_scan_buffer_size = buf_end - buf_ptr;
2470 if (avctx->skip_frame == AVDISCARD_ALL) {
2471 skip_bits(&s->gb, get_bits_left(&s->gb));
2475 if ((ret = ff_mjpeg_decode_sos(s, NULL, 0, NULL)) < 0 &&
2476 (avctx->err_recognition & AV_EF_EXPLODE))
2480 if ((ret = mjpeg_decode_dri(s)) < 0)
2493 av_log(avctx, AV_LOG_ERROR,
2494 "mjpeg: unsupported coding type (%x)\n", start_code);
2499 /* eof process start code */
2500 buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
2501 av_log(avctx, AV_LOG_DEBUG,
2502 "marker parser used %d bytes (%d bits)\n",
2503 (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
2505 if (s->got_picture && s->cur_scan) {
2506 av_log(avctx, AV_LOG_WARNING, "EOI missing, emulating\n");
2509 av_log(avctx, AV_LOG_FATAL, "No JPEG data found in image\n");
2510 return AVERROR_INVALIDDATA;
2516 is16bit = av_pix_fmt_desc_get(s->avctx->pix_fmt)->comp[0].step > 1;
2518 if (AV_RB32(s->upscale_h)) {
2520 av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
2521 avctx->pix_fmt == AV_PIX_FMT_YUV444P ||
2522 avctx->pix_fmt == AV_PIX_FMT_YUVJ440P ||
2523 avctx->pix_fmt == AV_PIX_FMT_YUV440P ||
2524 avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
2525 avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
2526 avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
2527 avctx->pix_fmt == AV_PIX_FMT_YUV420P16||
2528 avctx->pix_fmt == AV_PIX_FMT_YUVA420P ||
2529 avctx->pix_fmt == AV_PIX_FMT_YUVA420P16||
2530 avctx->pix_fmt == AV_PIX_FMT_GBRP ||
2531 avctx->pix_fmt == AV_PIX_FMT_GBRAP
2533 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2537 av_assert0(s->nb_components == av_pix_fmt_count_planes(s->picture_ptr->format));
2538 for (p = 0; p<s->nb_components; p++) {
2539 uint8_t *line = s->picture_ptr->data[p];
2542 if (!s->upscale_h[p])
2545 w = AV_CEIL_RSHIFT(w, hshift);
2546 h = AV_CEIL_RSHIFT(h, vshift);
2548 if (s->upscale_v[p] == 1)
2551 for (i = 0; i < h; i++) {
2552 if (s->upscale_h[p] == 1) {
2553 if (is16bit) ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 2];
2554 else line[w - 1] = line[(w - 1) / 2];
2555 for (index = w - 2; index > 0; index--) {
2557 ((uint16_t*)line)[index] = (((uint16_t*)line)[index / 2] + ((uint16_t*)line)[(index + 1) / 2]) >> 1;
2559 line[index] = (line[index / 2] + line[(index + 1) / 2]) >> 1;
2561 } else if (s->upscale_h[p] == 2) {
2563 ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 3];
2565 ((uint16_t*)line)[w - 2] = ((uint16_t*)line)[w - 1];
2567 line[w - 1] = line[(w - 1) / 3];
2569 line[w - 2] = line[w - 1];
2571 for (index = w - 3; index > 0; index--) {
2572 line[index] = (line[index / 3] + line[(index + 1) / 3] + line[(index + 2) / 3] + 1) / 3;
2575 line += s->linesize[p];
2579 if (AV_RB32(s->upscale_v)) {
2581 av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
2582 avctx->pix_fmt == AV_PIX_FMT_YUV444P ||
2583 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
2584 avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
2585 avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
2586 avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
2587 avctx->pix_fmt == AV_PIX_FMT_YUV440P ||
2588 avctx->pix_fmt == AV_PIX_FMT_YUVJ440P ||
2589 avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
2590 avctx->pix_fmt == AV_PIX_FMT_YUVA420P ||
2591 avctx->pix_fmt == AV_PIX_FMT_YUVA420P16||
2592 avctx->pix_fmt == AV_PIX_FMT_GBRP ||
2593 avctx->pix_fmt == AV_PIX_FMT_GBRAP
2595 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2599 av_assert0(s->nb_components == av_pix_fmt_count_planes(s->picture_ptr->format));
2600 for (p = 0; p < s->nb_components; p++) {
2604 if (!s->upscale_v[p])
2607 w = AV_CEIL_RSHIFT(w, hshift);
2608 h = AV_CEIL_RSHIFT(h, vshift);
2610 dst = &((uint8_t *)s->picture_ptr->data[p])[(h - 1) * s->linesize[p]];
2611 for (i = h - 1; i; i--) {
2612 uint8_t *src1 = &((uint8_t *)s->picture_ptr->data[p])[i * s->upscale_v[p] / (s->upscale_v[p] + 1) * s->linesize[p]];
2613 uint8_t *src2 = &((uint8_t *)s->picture_ptr->data[p])[(i + 1) * s->upscale_v[p] / (s->upscale_v[p] + 1) * s->linesize[p]];
2614 if (s->upscale_v[p] != 2 && (src1 == src2 || i == h - 1)) {
2615 memcpy(dst, src1, w);
2617 for (index = 0; index < w; index++)
2618 dst[index] = (src1[index] + src2[index]) >> 1;
2620 dst -= s->linesize[p];
2624 if (s->flipped && !s->rgb) {
2626 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2630 av_assert0(s->nb_components == av_pix_fmt_count_planes(s->picture_ptr->format));
2631 for (index=0; index<s->nb_components; index++) {
2632 uint8_t *dst = s->picture_ptr->data[index];
2633 int w = s->picture_ptr->width;
2634 int h = s->picture_ptr->height;
2635 if(index && index<3){
2636 w = AV_CEIL_RSHIFT(w, hshift);
2637 h = AV_CEIL_RSHIFT(h, vshift);
2640 uint8_t *dst2 = dst + s->picture_ptr->linesize[index]*(h-1);
2641 for (i=0; i<h/2; i++) {
2643 FFSWAP(int, dst[j], dst2[j]);
2644 dst += s->picture_ptr->linesize[index];
2645 dst2 -= s->picture_ptr->linesize[index];
2650 if (s->adobe_transform == 0 && s->avctx->pix_fmt == AV_PIX_FMT_GBRAP) {
2651 int w = s->picture_ptr->width;
2652 int h = s->picture_ptr->height;
2653 av_assert0(s->nb_components == 4);
2654 for (i=0; i<h; i++) {
2657 for (index=0; index<4; index++) {
2658 dst[index] = s->picture_ptr->data[index]
2659 + s->picture_ptr->linesize[index]*i;
2661 for (j=0; j<w; j++) {
2663 int r = dst[0][j] * k;
2664 int g = dst[1][j] * k;
2665 int b = dst[2][j] * k;
2666 dst[0][j] = g*257 >> 16;
2667 dst[1][j] = b*257 >> 16;
2668 dst[2][j] = r*257 >> 16;
2673 if (s->adobe_transform == 2 && s->avctx->pix_fmt == AV_PIX_FMT_YUVA444P) {
2674 int w = s->picture_ptr->width;
2675 int h = s->picture_ptr->height;
2676 av_assert0(s->nb_components == 4);
2677 for (i=0; i<h; i++) {
2680 for (index=0; index<4; index++) {
2681 dst[index] = s->picture_ptr->data[index]
2682 + s->picture_ptr->linesize[index]*i;
2684 for (j=0; j<w; j++) {
2686 int r = (255 - dst[0][j]) * k;
2687 int g = (128 - dst[1][j]) * k;
2688 int b = (128 - dst[2][j]) * k;
2689 dst[0][j] = r*257 >> 16;
2690 dst[1][j] = (g*257 >> 16) + 128;
2691 dst[2][j] = (b*257 >> 16) + 128;
2698 AVStereo3D *stereo = av_stereo3d_create_side_data(data);
2700 stereo->type = s->stereo3d->type;
2701 stereo->flags = s->stereo3d->flags;
2703 av_freep(&s->stereo3d);
2706 if (s->iccnum != 0 && s->iccnum == s->iccread) {
2707 AVFrameSideData *sd;
2712 /* Sum size of all parts. */
2713 for (i = 0; i < s->iccnum; i++)
2714 total_size += s->iccdatalens[i];
2716 sd = av_frame_new_side_data(data, AV_FRAME_DATA_ICC_PROFILE, total_size);
2718 av_log(s->avctx, AV_LOG_ERROR, "Could not allocate frame side data\n");
2719 return AVERROR(ENOMEM);
2722 /* Reassemble the parts, which are now in-order. */
2723 for (i = 0; i < s->iccnum; i++) {
2724 memcpy(sd->data + offset, s->iccdata[i], s->iccdatalens[i]);
2725 offset += s->iccdatalens[i];
2729 av_dict_copy(&((AVFrame *) data)->metadata, s->exif_metadata, 0);
2730 av_dict_free(&s->exif_metadata);
2733 av_log(avctx, AV_LOG_DEBUG, "decode frame unused %"PTRDIFF_SPECIFIER" bytes\n",
2735 // return buf_end - buf_ptr;
2736 return buf_ptr - buf;
2739 av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
2741 MJpegDecodeContext *s = avctx->priv_data;
2744 if (s->interlaced && s->bottom_field == !s->interlace_polarity && s->got_picture && !avctx->frame_number) {
2745 av_log(avctx, AV_LOG_INFO, "Single field\n");
2749 av_frame_free(&s->picture);
2750 s->picture_ptr = NULL;
2751 } else if (s->picture_ptr)
2752 av_frame_unref(s->picture_ptr);
2754 av_freep(&s->buffer);
2755 av_freep(&s->stereo3d);
2756 av_freep(&s->ljpeg_buffer);
2757 s->ljpeg_buffer_size = 0;
2759 for (i = 0; i < 3; i++) {
2760 for (j = 0; j < 4; j++)
2761 ff_free_vlc(&s->vlcs[i][j]);
2763 for (i = 0; i < MAX_COMPONENTS; i++) {
2764 av_freep(&s->blocks[i]);
2765 av_freep(&s->last_nnz[i]);
2767 av_dict_free(&s->exif_metadata);
2769 reset_icc_profile(s);
2771 av_freep(&s->hwaccel_picture_private);
2776 static void decode_flush(AVCodecContext *avctx)
2778 MJpegDecodeContext *s = avctx->priv_data;
2782 #if CONFIG_MJPEG_DECODER
2783 #define OFFSET(x) offsetof(MJpegDecodeContext, x)
2784 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2785 static const AVOption options[] = {
2786 { "extern_huff", "Use external huffman table.",
2787 OFFSET(extern_huff), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
2791 static const AVClass mjpegdec_class = {
2792 .class_name = "MJPEG decoder",
2793 .item_name = av_default_item_name,
2795 .version = LIBAVUTIL_VERSION_INT,
2798 AVCodec ff_mjpeg_decoder = {
2800 .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
2801 .type = AVMEDIA_TYPE_VIDEO,
2802 .id = AV_CODEC_ID_MJPEG,
2803 .priv_data_size = sizeof(MJpegDecodeContext),
2804 .init = ff_mjpeg_decode_init,
2805 .close = ff_mjpeg_decode_end,
2806 .decode = ff_mjpeg_decode_frame,
2807 .flush = decode_flush,
2808 .capabilities = AV_CODEC_CAP_DR1,
2810 .priv_class = &mjpegdec_class,
2811 .profiles = NULL_IF_CONFIG_SMALL(ff_mjpeg_profiles),
2812 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
2813 FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
2814 .hw_configs = (const AVCodecHWConfigInternal*[]) {
2815 #if CONFIG_MJPEG_NVDEC_HWACCEL
2816 HWACCEL_NVDEC(mjpeg),
2818 #if CONFIG_MJPEG_VAAPI_HWACCEL
2819 HWACCEL_VAAPI(mjpeg),
2825 #if CONFIG_THP_DECODER
2826 AVCodec ff_thp_decoder = {
2828 .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
2829 .type = AVMEDIA_TYPE_VIDEO,
2830 .id = AV_CODEC_ID_THP,
2831 .priv_data_size = sizeof(MJpegDecodeContext),
2832 .init = ff_mjpeg_decode_init,
2833 .close = ff_mjpeg_decode_end,
2834 .decode = ff_mjpeg_decode_frame,
2835 .flush = decode_flush,
2836 .capabilities = AV_CODEC_CAP_DR1,
2838 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,