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"
49 #include "bytestream.h"
52 static int build_vlc(VLC *vlc, const uint8_t *bits_table,
53 const uint8_t *val_table, int nb_codes,
54 int use_static, int is_ac)
56 uint8_t huff_size[256] = { 0 };
57 uint16_t huff_code[256];
58 uint16_t huff_sym[256];
61 av_assert0(nb_codes <= 256);
63 ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
65 for (i = 0; i < 256; i++)
66 huff_sym[i] = i + 16 * is_ac;
69 huff_sym[0] = 16 * 256;
71 return ff_init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
72 huff_code, 2, 2, huff_sym, 2, 2, use_static);
75 static int build_basic_mjpeg_vlc(MJpegDecodeContext *s)
79 if ((ret = build_vlc(&s->vlcs[0][0], avpriv_mjpeg_bits_dc_luminance,
80 avpriv_mjpeg_val_dc, 12, 0, 0)) < 0)
83 if ((ret = build_vlc(&s->vlcs[0][1], avpriv_mjpeg_bits_dc_chrominance,
84 avpriv_mjpeg_val_dc, 12, 0, 0)) < 0)
87 if ((ret = build_vlc(&s->vlcs[1][0], avpriv_mjpeg_bits_ac_luminance,
88 avpriv_mjpeg_val_ac_luminance, 251, 0, 1)) < 0)
91 if ((ret = build_vlc(&s->vlcs[1][1], avpriv_mjpeg_bits_ac_chrominance,
92 avpriv_mjpeg_val_ac_chrominance, 251, 0, 1)) < 0)
95 if ((ret = build_vlc(&s->vlcs[2][0], avpriv_mjpeg_bits_ac_luminance,
96 avpriv_mjpeg_val_ac_luminance, 251, 0, 0)) < 0)
99 if ((ret = build_vlc(&s->vlcs[2][1], avpriv_mjpeg_bits_ac_chrominance,
100 avpriv_mjpeg_val_ac_chrominance, 251, 0, 0)) < 0)
107 static void parse_avid(MJpegDecodeContext *s, uint8_t *buf, int len)
110 if (len > 14 && buf[12] == 1) /* 1 - NTSC */
111 s->interlace_polarity = 1;
112 if (len > 14 && buf[12] == 2) /* 2 - PAL */
113 s->interlace_polarity = 0;
114 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
115 av_log(s->avctx, AV_LOG_INFO, "AVID: len:%d %d\n", len, len > 14 ? buf[12] : -1);
118 static void init_idct(AVCodecContext *avctx)
120 MJpegDecodeContext *s = avctx->priv_data;
122 ff_idctdsp_init(&s->idsp, avctx);
123 ff_init_scantable(s->idsp.idct_permutation, &s->scantable,
127 av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx)
129 MJpegDecodeContext *s = avctx->priv_data;
132 if (!s->picture_ptr) {
133 s->picture = av_frame_alloc();
135 return AVERROR(ENOMEM);
136 s->picture_ptr = s->picture;
140 ff_blockdsp_init(&s->bdsp, avctx);
141 ff_hpeldsp_init(&s->hdsp, avctx->flags);
146 s->first_picture = 1;
148 s->org_height = avctx->coded_height;
149 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
150 avctx->colorspace = AVCOL_SPC_BT470BG;
151 s->hwaccel_pix_fmt = s->hwaccel_sw_pix_fmt = AV_PIX_FMT_NONE;
153 if ((ret = build_basic_mjpeg_vlc(s)) < 0)
156 if (s->extern_huff) {
157 av_log(avctx, AV_LOG_INFO, "using external huffman table\n");
158 if ((ret = init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8)) < 0)
160 if (ff_mjpeg_decode_dht(s)) {
161 av_log(avctx, AV_LOG_ERROR,
162 "error using external huffman table, switching back to internal\n");
163 build_basic_mjpeg_vlc(s);
166 if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
167 s->interlace_polarity = 1; /* bottom field first */
168 av_log(avctx, AV_LOG_DEBUG, "bottom field first\n");
169 } else if (avctx->field_order == AV_FIELD_UNKNOWN) {
170 if (avctx->codec_tag == AV_RL32("MJPG"))
171 s->interlace_polarity = 1;
174 if ( avctx->extradata_size > 8
175 && AV_RL32(avctx->extradata) == 0x2C
176 && AV_RL32(avctx->extradata+4) == 0x18) {
177 parse_avid(s, avctx->extradata, avctx->extradata_size);
180 if (avctx->codec->id == AV_CODEC_ID_AMV)
187 /* quantize tables */
188 int ff_mjpeg_decode_dqt(MJpegDecodeContext *s)
192 len = get_bits(&s->gb, 16) - 2;
194 if (8*len > get_bits_left(&s->gb)) {
195 av_log(s->avctx, AV_LOG_ERROR, "dqt: len %d is too large\n", len);
196 return AVERROR_INVALIDDATA;
200 int pr = get_bits(&s->gb, 4);
202 av_log(s->avctx, AV_LOG_ERROR, "dqt: invalid precision\n");
203 return AVERROR_INVALIDDATA;
205 index = get_bits(&s->gb, 4);
208 av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index);
209 /* read quant table */
210 for (i = 0; i < 64; i++) {
211 s->quant_matrixes[index][i] = get_bits(&s->gb, pr ? 16 : 8);
212 if (s->quant_matrixes[index][i] == 0) {
213 av_log(s->avctx, AV_LOG_ERROR, "dqt: 0 quant value\n");
214 return AVERROR_INVALIDDATA;
218 // XXX FIXME fine-tune, and perhaps add dc too
219 s->qscale[index] = FFMAX(s->quant_matrixes[index][1],
220 s->quant_matrixes[index][8]) >> 1;
221 av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n",
222 index, s->qscale[index]);
223 len -= 1 + 64 * (1+pr);
228 /* decode huffman tables and build VLC decoders */
229 int ff_mjpeg_decode_dht(MJpegDecodeContext *s)
231 int len, index, i, class, n, v, code_max;
232 uint8_t bits_table[17];
233 uint8_t val_table[256];
236 len = get_bits(&s->gb, 16) - 2;
238 if (8*len > get_bits_left(&s->gb)) {
239 av_log(s->avctx, AV_LOG_ERROR, "dht: len %d is too large\n", len);
240 return AVERROR_INVALIDDATA;
245 return AVERROR_INVALIDDATA;
246 class = get_bits(&s->gb, 4);
248 return AVERROR_INVALIDDATA;
249 index = get_bits(&s->gb, 4);
251 return AVERROR_INVALIDDATA;
253 for (i = 1; i <= 16; i++) {
254 bits_table[i] = get_bits(&s->gb, 8);
258 if (len < n || n > 256)
259 return AVERROR_INVALIDDATA;
262 for (i = 0; i < n; i++) {
263 v = get_bits(&s->gb, 8);
270 /* build VLC and flush previous vlc if present */
271 ff_free_vlc(&s->vlcs[class][index]);
272 av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
273 class, index, code_max + 1);
274 if ((ret = build_vlc(&s->vlcs[class][index], bits_table, val_table,
275 code_max + 1, 0, class > 0)) < 0)
279 ff_free_vlc(&s->vlcs[2][index]);
280 if ((ret = build_vlc(&s->vlcs[2][index], bits_table, val_table,
281 code_max + 1, 0, 0)) < 0)
285 for (i = 0; i < 16; i++)
286 s->raw_huffman_lengths[class][index][i] = bits_table[i + 1];
287 for (i = 0; i < 256; i++)
288 s->raw_huffman_values[class][index][i] = val_table[i];
293 int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
295 int len, nb_components, i, width, height, bits, ret, size_change;
297 int h_count[MAX_COMPONENTS] = { 0 };
298 int v_count[MAX_COMPONENTS] = { 0 };
301 memset(s->upscale_h, 0, sizeof(s->upscale_h));
302 memset(s->upscale_v, 0, sizeof(s->upscale_v));
304 /* XXX: verify len field validity */
305 len = get_bits(&s->gb, 16);
306 bits = get_bits(&s->gb, 8);
308 if (bits > 16 || bits < 1) {
309 av_log(s->avctx, AV_LOG_ERROR, "bits %d is invalid\n", bits);
310 return AVERROR_INVALIDDATA;
313 if (s->avctx->bits_per_raw_sample != bits) {
314 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);
315 s->avctx->bits_per_raw_sample = bits;
320 if (bits == 9 && !s->pegasus_rct)
321 s->rct = 1; // FIXME ugly
323 if(s->lossless && s->avctx->lowres){
324 av_log(s->avctx, AV_LOG_ERROR, "lowres is not possible with lossless jpeg\n");
328 height = get_bits(&s->gb, 16);
329 width = get_bits(&s->gb, 16);
331 // HACK for odd_height.mov
332 if (s->interlaced && s->width == width && s->height == height + 1)
335 av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
336 if (av_image_check_size(width, height, 0, s->avctx) < 0)
337 return AVERROR_INVALIDDATA;
338 if (s->buf_size && (width + 7) / 8 * ((height + 7) / 8) > s->buf_size * 4LL)
339 return AVERROR_INVALIDDATA;
341 nb_components = get_bits(&s->gb, 8);
342 if (nb_components <= 0 ||
343 nb_components > MAX_COMPONENTS)
345 if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
346 if (nb_components != s->nb_components) {
347 av_log(s->avctx, AV_LOG_ERROR,
348 "nb_components changing in interlaced picture\n");
349 return AVERROR_INVALIDDATA;
352 if (s->ls && !(bits <= 8 || nb_components == 1)) {
353 avpriv_report_missing_feature(s->avctx,
354 "JPEG-LS that is not <= 8 "
355 "bits/component or 16-bit gray");
356 return AVERROR_PATCHWELCOME;
358 s->nb_components = nb_components;
361 for (i = 0; i < nb_components; i++) {
363 s->component_id[i] = get_bits(&s->gb, 8) - 1;
364 h_count[i] = get_bits(&s->gb, 4);
365 v_count[i] = get_bits(&s->gb, 4);
366 /* compute hmax and vmax (only used in interleaved case) */
367 if (h_count[i] > s->h_max)
368 s->h_max = h_count[i];
369 if (v_count[i] > s->v_max)
370 s->v_max = v_count[i];
371 s->quant_index[i] = get_bits(&s->gb, 8);
372 if (s->quant_index[i] >= 4) {
373 av_log(s->avctx, AV_LOG_ERROR, "quant_index is invalid\n");
374 return AVERROR_INVALIDDATA;
376 if (!h_count[i] || !v_count[i]) {
377 av_log(s->avctx, AV_LOG_ERROR,
378 "Invalid sampling factor in component %d %d:%d\n",
379 i, h_count[i], v_count[i]);
380 return AVERROR_INVALIDDATA;
383 av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n",
384 i, h_count[i], v_count[i],
385 s->component_id[i], s->quant_index[i]);
387 if ( nb_components == 4
388 && s->component_id[0] == 'C' - 1
389 && s->component_id[1] == 'M' - 1
390 && s->component_id[2] == 'Y' - 1
391 && s->component_id[3] == 'K' - 1)
392 s->adobe_transform = 0;
394 if (s->ls && (s->h_max > 1 || s->v_max > 1)) {
395 avpriv_report_missing_feature(s->avctx, "Subsampling in JPEG-LS");
396 return AVERROR_PATCHWELCOME;
400 /* if different size, realloc/alloc picture */
401 if (width != s->width || height != s->height || bits != s->bits ||
402 memcmp(s->h_count, h_count, sizeof(h_count)) ||
403 memcmp(s->v_count, v_count, sizeof(v_count))) {
409 memcpy(s->h_count, h_count, sizeof(h_count));
410 memcpy(s->v_count, v_count, sizeof(v_count));
414 /* test interlaced mode */
415 if (s->first_picture &&
416 (s->multiscope != 2 || s->avctx->time_base.den >= 25 * s->avctx->time_base.num) &&
417 s->org_height != 0 &&
418 s->height < ((s->org_height * 3) / 4)) {
420 s->bottom_field = s->interlace_polarity;
421 s->picture_ptr->interlaced_frame = 1;
422 s->picture_ptr->top_field_first = !s->interlace_polarity;
426 ret = ff_set_dimensions(s->avctx, width, height);
430 s->first_picture = 0;
435 if (s->got_picture && s->interlaced && (s->bottom_field == !s->interlace_polarity)) {
436 if (s->progressive) {
437 avpriv_request_sample(s->avctx, "progressively coded interlaced picture");
438 return AVERROR_INVALIDDATA;
441 if (s->v_max == 1 && s->h_max == 1 && s->lossless==1 && (nb_components==3 || nb_components==4))
443 else if (!s->lossless)
445 /* XXX: not complete test ! */
446 pix_fmt_id = ((unsigned)s->h_count[0] << 28) | (s->v_count[0] << 24) |
447 (s->h_count[1] << 20) | (s->v_count[1] << 16) |
448 (s->h_count[2] << 12) | (s->v_count[2] << 8) |
449 (s->h_count[3] << 4) | s->v_count[3];
450 av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id);
451 /* NOTE we do not allocate pictures large enough for the possible
452 * padding of h/v_count being 4 */
453 if (!(pix_fmt_id & 0xD0D0D0D0))
454 pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1;
455 if (!(pix_fmt_id & 0x0D0D0D0D))
456 pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1;
458 for (i = 0; i < 8; i++) {
459 int j = 6 + (i&1) - (i&6);
460 int is = (pix_fmt_id >> (4*i)) & 0xF;
461 int js = (pix_fmt_id >> (4*j)) & 0xF;
463 if (is == 1 && js != 2 && (i < 2 || i > 5))
464 js = (pix_fmt_id >> ( 8 + 4*(i&1))) & 0xF;
465 if (is == 1 && js != 2 && (i < 2 || i > 5))
466 js = (pix_fmt_id >> (16 + 4*(i&1))) & 0xF;
468 if (is == 1 && js == 2) {
469 if (i & 1) s->upscale_h[j/2] = 1;
470 else s->upscale_v[j/2] = 1;
474 switch (pix_fmt_id) {
477 s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_BGR48;
479 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
480 s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_GBRP : AV_PIX_FMT_GBRP16;
482 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
483 else s->avctx->pix_fmt = AV_PIX_FMT_YUV444P16;
484 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
487 av_assert0(s->nb_components == 3);
491 s->avctx->pix_fmt = s->bits <= 9 ? AV_PIX_FMT_ABGR : AV_PIX_FMT_RGBA64;
493 if (s->adobe_transform == 0 && s->bits <= 8) {
494 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
496 s->avctx->pix_fmt = s->bits <= 8 ? AV_PIX_FMT_YUVA444P : AV_PIX_FMT_YUVA444P16;
497 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
500 av_assert0(s->nb_components == 4);
504 if (s->adobe_transform == 0 && s->bits <= 8) {
505 s->avctx->pix_fmt = AV_PIX_FMT_GBRAP;
506 s->upscale_v[1] = s->upscale_v[2] = 1;
507 s->upscale_h[1] = s->upscale_h[2] = 1;
508 } else if (s->adobe_transform == 2 && s->bits <= 8) {
509 s->avctx->pix_fmt = AV_PIX_FMT_YUVA444P;
510 s->upscale_v[1] = s->upscale_v[2] = 1;
511 s->upscale_h[1] = s->upscale_h[2] = 1;
512 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
514 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
515 else s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16;
516 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
518 av_assert0(s->nb_components == 4);
524 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
527 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
532 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
535 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
547 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
549 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
556 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
557 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
560 s->upscale_v[0] = s->upscale_v[1] = 1;
562 if (pix_fmt_id == 0x14111100)
563 s->upscale_v[1] = s->upscale_v[2] = 1;
564 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV440P : AV_PIX_FMT_YUVJ440P;
567 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
571 if (s->component_id[0] == 'Q' && s->component_id[1] == 'F' && s->component_id[2] == 'A') {
572 if (s->bits <= 8) s->avctx->pix_fmt = AV_PIX_FMT_GBRP;
575 s->upscale_h[0] = s->upscale_h[1] = 1;
577 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
578 else s->avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
579 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
585 s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV444P : AV_PIX_FMT_YUVJ444P;
586 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
587 s->upscale_h[1] = s->upscale_h[2] = 2;
591 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV422P : AV_PIX_FMT_YUVJ422P;
594 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
599 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV420P : AV_PIX_FMT_YUVJ420P;
600 else s->avctx->pix_fmt = AV_PIX_FMT_YUV420P16;
601 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
602 if (pix_fmt_id == 0x42111100) {
605 s->upscale_h[1] = s->upscale_h[2] = 1;
606 } else if (pix_fmt_id == 0x24111100) {
609 s->upscale_v[1] = s->upscale_v[2] = 1;
613 if (s->bits <= 8) s->avctx->pix_fmt = s->cs_itu601 ? AV_PIX_FMT_YUV411P : AV_PIX_FMT_YUVJ411P;
616 s->avctx->color_range = s->cs_itu601 ? AVCOL_RANGE_MPEG : AVCOL_RANGE_JPEG;
620 avpriv_report_missing_feature(s->avctx, "Pixel format 0x%x bits:%d", pix_fmt_id, s->bits);
621 memset(s->upscale_h, 0, sizeof(s->upscale_h));
622 memset(s->upscale_v, 0, sizeof(s->upscale_v));
623 return AVERROR_PATCHWELCOME;
625 if ((AV_RB32(s->upscale_h) || AV_RB32(s->upscale_v)) && s->avctx->lowres) {
626 avpriv_report_missing_feature(s->avctx, "Lowres for weird subsampling");
627 return AVERROR_PATCHWELCOME;
630 memset(s->upscale_h, 0, sizeof(s->upscale_h));
631 memset(s->upscale_v, 0, sizeof(s->upscale_v));
632 if (s->nb_components == 3) {
633 s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
634 } else if (s->nb_components != 1) {
635 av_log(s->avctx, AV_LOG_ERROR, "Unsupported number of components %d\n", s->nb_components);
636 return AVERROR_PATCHWELCOME;
637 } else if (s->palette_index && s->bits <= 8)
638 s->avctx->pix_fmt = AV_PIX_FMT_PAL8;
639 else if (s->bits <= 8)
640 s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
642 s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
645 s->pix_desc = av_pix_fmt_desc_get(s->avctx->pix_fmt);
647 av_log(s->avctx, AV_LOG_ERROR, "Could not get a pixel format descriptor.\n");
651 if (s->avctx->pix_fmt == s->hwaccel_sw_pix_fmt && !size_change) {
652 s->avctx->pix_fmt = s->hwaccel_pix_fmt;
654 enum AVPixelFormat pix_fmts[] = {
655 #if CONFIG_MJPEG_NVDEC_HWACCEL
658 #if CONFIG_MJPEG_VAAPI_HWACCEL
664 s->hwaccel_pix_fmt = ff_get_format(s->avctx, pix_fmts);
665 if (s->hwaccel_pix_fmt < 0)
666 return AVERROR(EINVAL);
668 s->hwaccel_sw_pix_fmt = s->avctx->pix_fmt;
669 s->avctx->pix_fmt = s->hwaccel_pix_fmt;
672 if (s->avctx->skip_frame == AVDISCARD_ALL) {
673 s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
674 s->picture_ptr->key_frame = 1;
679 av_frame_unref(s->picture_ptr);
680 if (ff_get_buffer(s->avctx, s->picture_ptr, AV_GET_BUFFER_FLAG_REF) < 0)
682 s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
683 s->picture_ptr->key_frame = 1;
686 for (i = 0; i < 4; i++)
687 s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;
689 ff_dlog(s->avctx, "%d %d %d %d %d %d\n",
690 s->width, s->height, s->linesize[0], s->linesize[1],
691 s->interlaced, s->avctx->height);
693 if (len != (8 + (3 * nb_components)))
694 av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len);
697 if ((s->rgb && !s->lossless && !s->ls) ||
698 (!s->rgb && s->ls && s->nb_components > 1)) {
699 av_log(s->avctx, AV_LOG_ERROR, "Unsupported coding and pixel format combination\n");
700 return AVERROR_PATCHWELCOME;
703 /* totally blank picture as progressive JPEG will only add details to it */
704 if (s->progressive) {
705 int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8);
706 int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8);
707 for (i = 0; i < s->nb_components; i++) {
708 int size = bw * bh * s->h_count[i] * s->v_count[i];
709 av_freep(&s->blocks[i]);
710 av_freep(&s->last_nnz[i]);
711 s->blocks[i] = av_mallocz_array(size, sizeof(**s->blocks));
712 s->last_nnz[i] = av_mallocz_array(size, sizeof(**s->last_nnz));
713 if (!s->blocks[i] || !s->last_nnz[i])
714 return AVERROR(ENOMEM);
715 s->block_stride[i] = bw * s->h_count[i];
717 memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
720 if (s->avctx->hwaccel) {
721 s->hwaccel_picture_private =
722 av_mallocz(s->avctx->hwaccel->frame_priv_data_size);
723 if (!s->hwaccel_picture_private)
724 return AVERROR(ENOMEM);
726 ret = s->avctx->hwaccel->start_frame(s->avctx, s->raw_image_buffer,
727 s->raw_image_buffer_size);
735 static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index)
738 code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
739 if (code < 0 || code > 16) {
740 av_log(s->avctx, AV_LOG_WARNING,
741 "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n",
742 0, dc_index, &s->vlcs[0][dc_index]);
747 return get_xbits(&s->gb, code);
752 /* decode block and dequantize */
753 static int decode_block(MJpegDecodeContext *s, int16_t *block, int component,
754 int dc_index, int ac_index, uint16_t *quant_matrix)
756 int code, i, j, level, val;
759 val = mjpeg_decode_dc(s, dc_index);
760 if (val == 0xfffff) {
761 av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
762 return AVERROR_INVALIDDATA;
764 val = val * (unsigned)quant_matrix[0] + s->last_dc[component];
765 val = av_clip_int16(val);
766 s->last_dc[component] = val;
770 {OPEN_READER(re, &s->gb);
772 UPDATE_CACHE(re, &s->gb);
773 GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2);
775 i += ((unsigned)code) >> 4;
778 if (code > MIN_CACHE_BITS - 16)
779 UPDATE_CACHE(re, &s->gb);
782 int cache = GET_CACHE(re, &s->gb);
783 int sign = (~cache) >> 31;
784 level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
787 LAST_SKIP_BITS(re, &s->gb, code);
790 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
791 return AVERROR_INVALIDDATA;
793 j = s->scantable.permutated[i];
794 block[j] = level * quant_matrix[i];
797 CLOSE_READER(re, &s->gb);}
802 static int decode_dc_progressive(MJpegDecodeContext *s, int16_t *block,
803 int component, int dc_index,
804 uint16_t *quant_matrix, int Al)
807 s->bdsp.clear_block(block);
808 val = mjpeg_decode_dc(s, dc_index);
809 if (val == 0xfffff) {
810 av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
811 return AVERROR_INVALIDDATA;
813 val = (val * (quant_matrix[0] << Al)) + s->last_dc[component];
814 s->last_dc[component] = val;
819 /* decode block and dequantize - progressive JPEG version */
820 static int decode_block_progressive(MJpegDecodeContext *s, int16_t *block,
821 uint8_t *last_nnz, int ac_index,
822 uint16_t *quant_matrix,
823 int ss, int se, int Al, int *EOBRUN)
825 int code, i, j, val, run;
834 OPEN_READER(re, &s->gb);
835 for (i = ss; ; i++) {
836 UPDATE_CACHE(re, &s->gb);
837 GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
839 run = ((unsigned) code) >> 4;
843 if (code > MIN_CACHE_BITS - 16)
844 UPDATE_CACHE(re, &s->gb);
847 int cache = GET_CACHE(re, &s->gb);
848 int sign = (~cache) >> 31;
849 level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
852 LAST_SKIP_BITS(re, &s->gb, code);
856 j = s->scantable.permutated[se];
857 block[j] = level * (quant_matrix[se] << Al);
860 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
861 return AVERROR_INVALIDDATA;
863 j = s->scantable.permutated[i];
864 block[j] = level * (quant_matrix[i] << Al);
866 if (run == 0xF) {// ZRL - skip 15 coefficients
869 av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
870 return AVERROR_INVALIDDATA;
875 UPDATE_CACHE(re, &s->gb);
876 val += NEG_USR32(GET_CACHE(re, &s->gb), run);
877 LAST_SKIP_BITS(re, &s->gb, run);
884 CLOSE_READER(re, &s->gb);
893 #define REFINE_BIT(j) { \
894 UPDATE_CACHE(re, &s->gb); \
895 sign = block[j] >> 15; \
896 block[j] += SHOW_UBITS(re, &s->gb, 1) * \
897 ((quant_matrix[i] ^ sign) - sign) << Al; \
898 LAST_SKIP_BITS(re, &s->gb, 1); \
906 av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \
911 j = s->scantable.permutated[i]; \
914 else if (run-- == 0) \
918 /* decode block and dequantize - progressive JPEG refinement pass */
919 static int decode_block_refinement(MJpegDecodeContext *s, int16_t *block,
921 int ac_index, uint16_t *quant_matrix,
922 int ss, int se, int Al, int *EOBRUN)
924 int code, i = ss, j, sign, val, run;
925 int last = FFMIN(se, *last_nnz);
927 OPEN_READER(re, &s->gb);
932 UPDATE_CACHE(re, &s->gb);
933 GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
936 run = ((unsigned) code) >> 4;
937 UPDATE_CACHE(re, &s->gb);
938 val = SHOW_UBITS(re, &s->gb, 1);
939 LAST_SKIP_BITS(re, &s->gb, 1);
941 j = s->scantable.permutated[i];
943 block[j] = ((quant_matrix[i] << Al) ^ val) - val;
947 CLOSE_READER(re, &s->gb);
951 run = ((unsigned) code) >> 4;
958 UPDATE_CACHE(re, &s->gb);
959 run += SHOW_UBITS(re, &s->gb, val);
960 LAST_SKIP_BITS(re, &s->gb, val);
972 for (; i <= last; i++) {
973 j = s->scantable.permutated[i];
977 CLOSE_READER(re, &s->gb);
984 static int handle_rstn(MJpegDecodeContext *s, int nb_components)
989 if (s->restart_interval) {
991 if(s->restart_count == 0 && s->avctx->codec_id == AV_CODEC_ID_THP){
992 align_get_bits(&s->gb);
993 for (i = 0; i < nb_components; i++) /* reset dc */
994 s->last_dc[i] = (4 << s->bits);
997 i = 8 + ((-get_bits_count(&s->gb)) & 7);
999 if (s->restart_count == 0) {
1000 if( show_bits(&s->gb, i) == (1 << i) - 1
1001 || show_bits(&s->gb, i) == 0xFF) {
1002 int pos = get_bits_count(&s->gb);
1003 align_get_bits(&s->gb);
1004 while (get_bits_left(&s->gb) >= 8 && show_bits(&s->gb, 8) == 0xFF)
1005 skip_bits(&s->gb, 8);
1006 if (get_bits_left(&s->gb) >= 8 && (get_bits(&s->gb, 8) & 0xF8) == 0xD0) {
1007 for (i = 0; i < nb_components; i++) /* reset dc */
1008 s->last_dc[i] = (4 << s->bits);
1011 skip_bits_long(&s->gb, pos - get_bits_count(&s->gb));
1018 static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int nb_components, int predictor, int point_transform)
1021 uint16_t (*buffer)[4];
1022 int left[4], top[4], topleft[4];
1023 const int linesize = s->linesize[0];
1024 const int mask = ((1 << s->bits) - 1) << point_transform;
1025 int resync_mb_y = 0;
1026 int resync_mb_x = 0;
1028 if (s->nb_components != 3 && s->nb_components != 4)
1029 return AVERROR_INVALIDDATA;
1030 if (s->v_max != 1 || s->h_max != 1 || !s->lossless)
1031 return AVERROR_INVALIDDATA;
1034 s->restart_count = s->restart_interval;
1036 av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size,
1037 (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
1038 if (!s->ljpeg_buffer)
1039 return AVERROR(ENOMEM);
1041 buffer = s->ljpeg_buffer;
1043 for (i = 0; i < 4; i++)
1044 buffer[0][i] = 1 << (s->bits - 1);
1046 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1047 uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y);
1049 if (s->interlaced && s->bottom_field)
1050 ptr += linesize >> 1;
1052 for (i = 0; i < 4; i++)
1053 top[i] = left[i] = topleft[i] = buffer[0][i];
1055 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1056 int modified_predictor = predictor;
1058 if (get_bits_left(&s->gb) < 1) {
1059 av_log(s->avctx, AV_LOG_ERROR, "bitstream end in rgb_scan\n");
1060 return AVERROR_INVALIDDATA;
1063 if (s->restart_interval && !s->restart_count){
1064 s->restart_count = s->restart_interval;
1068 top[i] = left[i]= topleft[i]= 1 << (s->bits - 1);
1070 if (mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || !mb_x)
1071 modified_predictor = 1;
1073 for (i=0;i<nb_components;i++) {
1076 topleft[i] = top[i];
1077 top[i] = buffer[mb_x][i];
1079 PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
1081 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1085 left[i] = buffer[mb_x][i] =
1086 mask & (pred + (unsigned)(dc * (1 << point_transform)));
1089 if (s->restart_interval && !--s->restart_count) {
1090 align_get_bits(&s->gb);
1091 skip_bits(&s->gb, 16); /* skip RSTn */
1094 if (s->rct && s->nb_components == 4) {
1095 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1096 ptr[4*mb_x + 2] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
1097 ptr[4*mb_x + 1] = buffer[mb_x][1] + ptr[4*mb_x + 2];
1098 ptr[4*mb_x + 3] = buffer[mb_x][2] + ptr[4*mb_x + 2];
1099 ptr[4*mb_x + 0] = buffer[mb_x][3];
1101 } else if (s->nb_components == 4) {
1102 for(i=0; i<nb_components; i++) {
1103 int c= s->comp_index[i];
1105 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1106 ptr[4*mb_x+3-c] = buffer[mb_x][i];
1108 } else if(s->bits == 9) {
1109 return AVERROR_PATCHWELCOME;
1111 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1112 ((uint16_t*)ptr)[4*mb_x+c] = buffer[mb_x][i];
1116 } else if (s->rct) {
1117 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1118 ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
1119 ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
1120 ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
1122 } else if (s->pegasus_rct) {
1123 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1124 ptr[3*mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2]) >> 2);
1125 ptr[3*mb_x + 0] = buffer[mb_x][1] + ptr[3*mb_x + 1];
1126 ptr[3*mb_x + 2] = buffer[mb_x][2] + ptr[3*mb_x + 1];
1129 for(i=0; i<nb_components; i++) {
1130 int c= s->comp_index[i];
1132 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1133 ptr[3*mb_x+2-c] = buffer[mb_x][i];
1135 } else if(s->bits == 9) {
1136 return AVERROR_PATCHWELCOME;
1138 for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
1139 ((uint16_t*)ptr)[3*mb_x+2-c] = buffer[mb_x][i];
1148 static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
1149 int point_transform, int nb_components)
1151 int i, mb_x, mb_y, mask;
1152 int bits= (s->bits+7)&~7;
1153 int resync_mb_y = 0;
1154 int resync_mb_x = 0;
1156 point_transform += bits - s->bits;
1157 mask = ((1 << s->bits) - 1) << point_transform;
1159 av_assert0(nb_components>=1 && nb_components<=4);
1161 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1162 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1163 if (get_bits_left(&s->gb) < 1) {
1164 av_log(s->avctx, AV_LOG_ERROR, "bitstream end in yuv_scan\n");
1165 return AVERROR_INVALIDDATA;
1167 if (s->restart_interval && !s->restart_count){
1168 s->restart_count = s->restart_interval;
1173 if(!mb_x || mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x || s->interlaced){
1174 int toprow = mb_y == resync_mb_y || mb_y == resync_mb_y+1 && mb_x < resync_mb_x;
1175 int leftcol = !mb_x || mb_y == resync_mb_y && mb_x == resync_mb_x;
1176 for (i = 0; i < nb_components; i++) {
1179 int n, h, v, x, y, c, j, linesize;
1180 n = s->nb_blocks[i];
1181 c = s->comp_index[i];
1186 linesize= s->linesize[c];
1188 if(bits>8) linesize /= 2;
1190 for(j=0; j<n; j++) {
1193 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1196 if ( h * mb_x + x >= s->width
1197 || v * mb_y + y >= s->height) {
1199 } else if (bits<=8) {
1200 ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
1202 if(x==0 && leftcol){
1203 pred= 1 << (bits - 1);
1208 if(x==0 && leftcol){
1209 pred= ptr[-linesize];
1211 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
1215 if (s->interlaced && s->bottom_field)
1216 ptr += linesize >> 1;
1218 *ptr= pred + ((unsigned)dc << point_transform);
1220 ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
1222 if(x==0 && leftcol){
1223 pred= 1 << (bits - 1);
1228 if(x==0 && leftcol){
1229 pred= ptr16[-linesize];
1231 PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
1235 if (s->interlaced && s->bottom_field)
1236 ptr16 += linesize >> 1;
1238 *ptr16= pred + ((unsigned)dc << point_transform);
1247 for (i = 0; i < nb_components; i++) {
1250 int n, h, v, x, y, c, j, linesize, dc;
1251 n = s->nb_blocks[i];
1252 c = s->comp_index[i];
1257 linesize = s->linesize[c];
1259 if(bits>8) linesize /= 2;
1261 for (j = 0; j < n; j++) {
1264 dc = mjpeg_decode_dc(s, s->dc_index[i]);
1267 if ( h * mb_x + x >= s->width
1268 || v * mb_y + y >= s->height) {
1270 } else if (bits<=8) {
1271 ptr = s->picture_ptr->data[c] +
1272 (linesize * (v * mb_y + y)) +
1273 (h * mb_x + x); //FIXME optimize this crap
1274 PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
1277 *ptr = pred + ((unsigned)dc << point_transform);
1279 ptr16 = (uint16_t*)(s->picture_ptr->data[c] + 2*(linesize * (v * mb_y + y)) + 2*(h * mb_x + x)); //FIXME optimize this crap
1280 PREDICT(pred, ptr16[-linesize-1], ptr16[-linesize], ptr16[-1], predictor);
1283 *ptr16= pred + ((unsigned)dc << point_transform);
1293 if (s->restart_interval && !--s->restart_count) {
1294 align_get_bits(&s->gb);
1295 skip_bits(&s->gb, 16); /* skip RSTn */
1302 static av_always_inline void mjpeg_copy_block(MJpegDecodeContext *s,
1303 uint8_t *dst, const uint8_t *src,
1304 int linesize, int lowres)
1307 case 0: s->hdsp.put_pixels_tab[1][0](dst, src, linesize, 8);
1309 case 1: copy_block4(dst, src, linesize, linesize, 4);
1311 case 2: copy_block2(dst, src, linesize, linesize, 2);
1313 case 3: *dst = *src;
1318 static void shift_output(MJpegDecodeContext *s, uint8_t *ptr, int linesize)
1320 int block_x, block_y;
1321 int size = 8 >> s->avctx->lowres;
1323 for (block_y=0; block_y<size; block_y++)
1324 for (block_x=0; block_x<size; block_x++)
1325 *(uint16_t*)(ptr + 2*block_x + block_y*linesize) <<= 16 - s->bits;
1327 for (block_y=0; block_y<size; block_y++)
1328 for (block_x=0; block_x<size; block_x++)
1329 *(ptr + block_x + block_y*linesize) <<= 8 - s->bits;
1333 static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
1334 int Al, const uint8_t *mb_bitmask,
1335 int mb_bitmask_size,
1336 const AVFrame *reference)
1338 int i, mb_x, mb_y, chroma_h_shift, chroma_v_shift, chroma_width, chroma_height;
1339 uint8_t *data[MAX_COMPONENTS];
1340 const uint8_t *reference_data[MAX_COMPONENTS];
1341 int linesize[MAX_COMPONENTS];
1342 GetBitContext mb_bitmask_gb = {0}; // initialize to silence gcc warning
1343 int bytes_per_pixel = 1 + (s->bits > 8);
1346 if (mb_bitmask_size != (s->mb_width * s->mb_height + 7)>>3) {
1347 av_log(s->avctx, AV_LOG_ERROR, "mb_bitmask_size mismatches\n");
1348 return AVERROR_INVALIDDATA;
1350 init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
1353 s->restart_count = 0;
1355 av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &chroma_h_shift,
1357 chroma_width = AV_CEIL_RSHIFT(s->width, chroma_h_shift);
1358 chroma_height = AV_CEIL_RSHIFT(s->height, chroma_v_shift);
1360 for (i = 0; i < nb_components; i++) {
1361 int c = s->comp_index[i];
1362 data[c] = s->picture_ptr->data[c];
1363 reference_data[c] = reference ? reference->data[c] : NULL;
1364 linesize[c] = s->linesize[c];
1365 s->coefs_finished[c] |= 1;
1368 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1369 for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
1370 const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
1372 if (s->restart_interval && !s->restart_count)
1373 s->restart_count = s->restart_interval;
1375 if (get_bits_left(&s->gb) < 0) {
1376 av_log(s->avctx, AV_LOG_ERROR, "overread %d\n",
1377 -get_bits_left(&s->gb));
1378 return AVERROR_INVALIDDATA;
1380 for (i = 0; i < nb_components; i++) {
1382 int n, h, v, x, y, c, j;
1384 n = s->nb_blocks[i];
1385 c = s->comp_index[i];
1390 for (j = 0; j < n; j++) {
1391 block_offset = (((linesize[c] * (v * mb_y + y) * 8) +
1392 (h * mb_x + x) * 8 * bytes_per_pixel) >> s->avctx->lowres);
1394 if (s->interlaced && s->bottom_field)
1395 block_offset += linesize[c] >> 1;
1396 if ( 8*(h * mb_x + x) < ((c == 1) || (c == 2) ? chroma_width : s->width)
1397 && 8*(v * mb_y + y) < ((c == 1) || (c == 2) ? chroma_height : s->height)) {
1398 ptr = data[c] + block_offset;
1401 if (!s->progressive) {
1404 mjpeg_copy_block(s, ptr, reference_data[c] + block_offset,
1405 linesize[c], s->avctx->lowres);
1408 s->bdsp.clear_block(s->block);
1409 if (decode_block(s, s->block, i,
1410 s->dc_index[i], s->ac_index[i],
1411 s->quant_matrixes[s->quant_sindex[i]]) < 0) {
1412 av_log(s->avctx, AV_LOG_ERROR,
1413 "error y=%d x=%d\n", mb_y, mb_x);
1414 return AVERROR_INVALIDDATA;
1417 s->idsp.idct_put(ptr, linesize[c], s->block);
1419 shift_output(s, ptr, linesize[c]);
1423 int block_idx = s->block_stride[c] * (v * mb_y + y) +
1425 int16_t *block = s->blocks[c][block_idx];
1427 block[0] += get_bits1(&s->gb) *
1428 s->quant_matrixes[s->quant_sindex[i]][0] << Al;
1429 else if (decode_dc_progressive(s, block, i, s->dc_index[i],
1430 s->quant_matrixes[s->quant_sindex[i]],
1432 av_log(s->avctx, AV_LOG_ERROR,
1433 "error y=%d x=%d\n", mb_y, mb_x);
1434 return AVERROR_INVALIDDATA;
1437 ff_dlog(s->avctx, "mb: %d %d processed\n", mb_y, mb_x);
1438 ff_dlog(s->avctx, "%d %d %d %d %d %d %d %d \n",
1439 mb_x, mb_y, x, y, c, s->bottom_field,
1440 (v * mb_y + y) * 8, (h * mb_x + x) * 8);
1448 handle_rstn(s, nb_components);
1454 static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
1455 int se, int Ah, int Al)
1459 int c = s->comp_index[0];
1460 uint16_t *quant_matrix = s->quant_matrixes[s->quant_sindex[0]];
1462 av_assert0(ss>=0 && Ah>=0 && Al>=0);
1463 if (se < ss || se > 63) {
1464 av_log(s->avctx, AV_LOG_ERROR, "SS/SE %d/%d is invalid\n", ss, se);
1465 return AVERROR_INVALIDDATA;
1468 // s->coefs_finished is a bitmask for coefficients coded
1469 // ss and se are parameters telling start and end coefficients
1470 s->coefs_finished[c] |= (2ULL << se) - (1ULL << ss);
1472 s->restart_count = 0;
1474 for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
1475 int block_idx = mb_y * s->block_stride[c];
1476 int16_t (*block)[64] = &s->blocks[c][block_idx];
1477 uint8_t *last_nnz = &s->last_nnz[c][block_idx];
1478 if (get_bits_left(&s->gb) <= 0) {
1479 av_log(s->avctx, AV_LOG_ERROR, "bitstream truncated in mjpeg_decode_scan_progressive_ac\n");
1480 return AVERROR_INVALIDDATA;
1482 for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
1484 if (s->restart_interval && !s->restart_count)
1485 s->restart_count = s->restart_interval;
1488 ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
1489 quant_matrix, ss, se, Al, &EOBRUN);
1491 ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
1492 quant_matrix, ss, se, Al, &EOBRUN);
1494 av_log(s->avctx, AV_LOG_ERROR,
1495 "error y=%d x=%d\n", mb_y, mb_x);
1496 return AVERROR_INVALIDDATA;
1499 if (handle_rstn(s, 0))
1506 static void mjpeg_idct_scan_progressive_ac(MJpegDecodeContext *s)
1510 const int bytes_per_pixel = 1 + (s->bits > 8);
1511 const int block_size = s->lossless ? 1 : 8;
1513 for (c = 0; c < s->nb_components; c++) {
1514 uint8_t *data = s->picture_ptr->data[c];
1515 int linesize = s->linesize[c];
1516 int h = s->h_max / s->h_count[c];
1517 int v = s->v_max / s->v_count[c];
1518 int mb_width = (s->width + h * block_size - 1) / (h * block_size);
1519 int mb_height = (s->height + v * block_size - 1) / (v * block_size);
1521 if (~s->coefs_finished[c])
1522 av_log(s->avctx, AV_LOG_WARNING, "component %d is incomplete\n", c);
1524 if (s->interlaced && s->bottom_field)
1525 data += linesize >> 1;
1527 for (mb_y = 0; mb_y < mb_height; mb_y++) {
1528 uint8_t *ptr = data + (mb_y * linesize * 8 >> s->avctx->lowres);
1529 int block_idx = mb_y * s->block_stride[c];
1530 int16_t (*block)[64] = &s->blocks[c][block_idx];
1531 for (mb_x = 0; mb_x < mb_width; mb_x++, block++) {
1532 s->idsp.idct_put(ptr, linesize, *block);
1534 shift_output(s, ptr, linesize);
1535 ptr += bytes_per_pixel*8 >> s->avctx->lowres;
1541 int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask,
1542 int mb_bitmask_size, const AVFrame *reference)
1544 int len, nb_components, i, h, v, predictor, point_transform;
1546 const int block_size = s->lossless ? 1 : 8;
1547 int ilv, prev_shift;
1549 if (!s->got_picture) {
1550 av_log(s->avctx, AV_LOG_WARNING,
1551 "Can not process SOS before SOF, skipping\n");
1556 if (reference->width != s->picture_ptr->width ||
1557 reference->height != s->picture_ptr->height ||
1558 reference->format != s->picture_ptr->format) {
1559 av_log(s->avctx, AV_LOG_ERROR, "Reference mismatching\n");
1560 return AVERROR_INVALIDDATA;
1564 /* XXX: verify len field validity */
1565 len = get_bits(&s->gb, 16);
1566 nb_components = get_bits(&s->gb, 8);
1567 if (nb_components == 0 || nb_components > MAX_COMPONENTS) {
1568 avpriv_report_missing_feature(s->avctx,
1569 "decode_sos: nb_components (%d)",
1571 return AVERROR_PATCHWELCOME;
1573 if (len != 6 + 2 * nb_components) {
1574 av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len);
1575 return AVERROR_INVALIDDATA;
1577 for (i = 0; i < nb_components; i++) {
1578 id = get_bits(&s->gb, 8) - 1;
1579 av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id);
1580 /* find component index */
1581 for (index = 0; index < s->nb_components; index++)
1582 if (id == s->component_id[index])
1584 if (index == s->nb_components) {
1585 av_log(s->avctx, AV_LOG_ERROR,
1586 "decode_sos: index(%d) out of components\n", index);
1587 return AVERROR_INVALIDDATA;
1589 /* Metasoft MJPEG codec has Cb and Cr swapped */
1590 if (s->avctx->codec_tag == MKTAG('M', 'T', 'S', 'J')
1591 && nb_components == 3 && s->nb_components == 3 && i)
1594 s->quant_sindex[i] = s->quant_index[index];
1595 s->nb_blocks[i] = s->h_count[index] * s->v_count[index];
1596 s->h_scount[i] = s->h_count[index];
1597 s->v_scount[i] = s->v_count[index];
1599 if(nb_components == 3 && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P)
1601 if(nb_components == 1 && s->nb_components == 3 && s->avctx->pix_fmt == AV_PIX_FMT_GBR24P)
1602 index = (index+2)%3;
1604 s->comp_index[i] = index;
1606 s->dc_index[i] = get_bits(&s->gb, 4);
1607 s->ac_index[i] = get_bits(&s->gb, 4);
1609 if (s->dc_index[i] < 0 || s->ac_index[i] < 0 ||
1610 s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
1612 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))
1616 predictor = get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
1617 ilv = get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */
1618 if(s->avctx->codec_tag != AV_RL32("CJPG")){
1619 prev_shift = get_bits(&s->gb, 4); /* Ah */
1620 point_transform = get_bits(&s->gb, 4); /* Al */
1622 prev_shift = point_transform = 0;
1624 if (nb_components > 1) {
1625 /* interleaved stream */
1626 s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size);
1627 s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size);
1628 } else if (!s->ls) { /* skip this for JPEG-LS */
1629 h = s->h_max / s->h_scount[0];
1630 v = s->v_max / s->v_scount[0];
1631 s->mb_width = (s->width + h * block_size - 1) / (h * block_size);
1632 s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
1633 s->nb_blocks[0] = 1;
1638 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1639 av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d skip:%d %s comp:%d\n",
1640 s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
1641 predictor, point_transform, ilv, s->bits, s->mjpb_skiptosod,
1642 s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""), nb_components);
1645 /* mjpeg-b can have padding bytes between sos and image data, skip them */
1646 for (i = s->mjpb_skiptosod; i > 0; i--)
1647 skip_bits(&s->gb, 8);
1650 for (i = 0; i < nb_components; i++)
1651 s->last_dc[i] = (4 << s->bits);
1653 if (s->avctx->hwaccel) {
1654 int bytes_to_start = get_bits_count(&s->gb) / 8;
1655 av_assert0(bytes_to_start >= 0 &&
1656 s->raw_scan_buffer_size >= bytes_to_start);
1658 ret = s->avctx->hwaccel->decode_slice(s->avctx,
1659 s->raw_scan_buffer + bytes_to_start,
1660 s->raw_scan_buffer_size - bytes_to_start);
1664 } else if (s->lossless) {
1665 av_assert0(s->picture_ptr == s->picture);
1666 if (CONFIG_JPEGLS_DECODER && s->ls) {
1668 // reset_ls_coding_parameters(s, 0);
1670 if ((ret = ff_jpegls_decode_picture(s, predictor,
1671 point_transform, ilv)) < 0)
1675 if ((ret = ljpeg_decode_rgb_scan(s, nb_components, predictor, point_transform)) < 0)
1678 if ((ret = ljpeg_decode_yuv_scan(s, predictor,
1680 nb_components)) < 0)
1685 if (s->progressive && predictor) {
1686 av_assert0(s->picture_ptr == s->picture);
1687 if ((ret = mjpeg_decode_scan_progressive_ac(s, predictor,
1689 point_transform)) < 0)
1692 if ((ret = mjpeg_decode_scan(s, nb_components,
1693 prev_shift, point_transform,
1694 mb_bitmask, mb_bitmask_size, reference)) < 0)
1699 if (s->interlaced &&
1700 get_bits_left(&s->gb) > 32 &&
1701 show_bits(&s->gb, 8) == 0xFF) {
1702 GetBitContext bak = s->gb;
1703 align_get_bits(&bak);
1704 if (show_bits(&bak, 16) == 0xFFD1) {
1705 av_log(s->avctx, AV_LOG_DEBUG, "AVRn interlaced picture marker found\n");
1707 skip_bits(&s->gb, 16);
1708 s->bottom_field ^= 1;
1717 av_log(s->avctx, AV_LOG_ERROR, "decode_sos: ac/dc index out of range\n");
1718 return AVERROR_INVALIDDATA;
1721 static int mjpeg_decode_dri(MJpegDecodeContext *s)
1723 if (get_bits(&s->gb, 16) != 4)
1724 return AVERROR_INVALIDDATA;
1725 s->restart_interval = get_bits(&s->gb, 16);
1726 s->restart_count = 0;
1727 av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n",
1728 s->restart_interval);
1733 static int mjpeg_decode_app(MJpegDecodeContext *s)
1737 len = get_bits(&s->gb, 16);
1739 return AVERROR_INVALIDDATA;
1740 if (8 * len > get_bits_left(&s->gb))
1741 return AVERROR_INVALIDDATA;
1743 id = get_bits_long(&s->gb, 32);
1746 if (s->avctx->debug & FF_DEBUG_STARTCODE)
1747 av_log(s->avctx, AV_LOG_DEBUG, "APPx (%s / %8X) len=%d\n",
1748 av_fourcc2str(av_bswap32(id)), id, len);
1750 /* Buggy AVID, it puts EOI only at every 10th frame. */
1751 /* Also, this fourcc is used by non-avid files too, it holds some
1752 information, but it's always present in AVID-created files. */
1753 if (id == AV_RB32("AVI1")) {
1759 4bytes field_size_less_padding
1762 i = get_bits(&s->gb, 8); len--;
1763 av_log(s->avctx, AV_LOG_DEBUG, "polarity %d\n", i);
1767 if (id == AV_RB32("JFIF")) {
1768 int t_w, t_h, v1, v2;
1771 skip_bits(&s->gb, 8); /* the trailing zero-byte */
1772 v1 = get_bits(&s->gb, 8);
1773 v2 = get_bits(&s->gb, 8);
1774 skip_bits(&s->gb, 8);
1776 s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 16);
1777 s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 16);
1778 if ( s->avctx->sample_aspect_ratio.num <= 0
1779 || s->avctx->sample_aspect_ratio.den <= 0) {
1780 s->avctx->sample_aspect_ratio.num = 0;
1781 s->avctx->sample_aspect_ratio.den = 1;
1784 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1785 av_log(s->avctx, AV_LOG_INFO,
1786 "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
1788 s->avctx->sample_aspect_ratio.num,
1789 s->avctx->sample_aspect_ratio.den);
1793 t_w = get_bits(&s->gb, 8);
1794 t_h = get_bits(&s->gb, 8);
1796 /* skip thumbnail */
1797 if (len -10 - (t_w * t_h * 3) > 0)
1798 len -= t_w * t_h * 3;
1805 if ( id == AV_RB32("Adob")
1807 && show_bits(&s->gb, 8) == 'e'
1808 && show_bits_long(&s->gb, 32) != AV_RB32("e_CM")) {
1809 skip_bits(&s->gb, 8); /* 'e' */
1810 skip_bits(&s->gb, 16); /* version */
1811 skip_bits(&s->gb, 16); /* flags0 */
1812 skip_bits(&s->gb, 16); /* flags1 */
1813 s->adobe_transform = get_bits(&s->gb, 8);
1814 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1815 av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found, transform=%d\n", s->adobe_transform);
1820 if (id == AV_RB32("LJIF")) {
1822 int pegasus_rct = s->pegasus_rct;
1823 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1824 av_log(s->avctx, AV_LOG_INFO,
1825 "Pegasus lossless jpeg header found\n");
1826 skip_bits(&s->gb, 16); /* version ? */
1827 skip_bits(&s->gb, 16); /* unknown always 0? */
1828 skip_bits(&s->gb, 16); /* unknown always 0? */
1829 skip_bits(&s->gb, 16); /* unknown always 0? */
1830 switch (i=get_bits(&s->gb, 8)) {
1840 av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace %d\n", i);
1845 if (rgb != s->rgb || pegasus_rct != s->pegasus_rct) {
1846 av_log(s->avctx, AV_LOG_WARNING, "Mismatching LJIF tag\n");
1851 s->pegasus_rct = pegasus_rct;
1855 if (id == AV_RL32("colr") && len > 0) {
1856 s->colr = get_bits(&s->gb, 8);
1857 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1858 av_log(s->avctx, AV_LOG_INFO, "COLR %d\n", s->colr);
1862 if (id == AV_RL32("xfrm") && len > 0) {
1863 s->xfrm = get_bits(&s->gb, 8);
1864 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1865 av_log(s->avctx, AV_LOG_INFO, "XFRM %d\n", s->xfrm);
1870 /* JPS extension by VRex */
1871 if (s->start_code == APP3 && id == AV_RB32("_JPS") && len >= 10) {
1872 int flags, layout, type;
1873 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1874 av_log(s->avctx, AV_LOG_INFO, "_JPSJPS_\n");
1876 skip_bits(&s->gb, 32); len -= 4; /* JPS_ */
1877 skip_bits(&s->gb, 16); len -= 2; /* block length */
1878 skip_bits(&s->gb, 8); /* reserved */
1879 flags = get_bits(&s->gb, 8);
1880 layout = get_bits(&s->gb, 8);
1881 type = get_bits(&s->gb, 8);
1884 s->stereo3d = av_stereo3d_alloc();
1889 s->stereo3d->type = AV_STEREO3D_2D;
1890 } else if (type == 1) {
1893 s->stereo3d->type = AV_STEREO3D_LINES;
1896 s->stereo3d->type = AV_STEREO3D_SIDEBYSIDE;
1899 s->stereo3d->type = AV_STEREO3D_TOPBOTTOM;
1902 if (!(flags & 0x04)) {
1903 s->stereo3d->flags = AV_STEREO3D_FLAG_INVERT;
1910 if (s->start_code == APP1 && id == AV_RB32("Exif") && len >= 2) {
1911 GetByteContext gbytes;
1912 int ret, le, ifd_offset, bytes_read;
1913 const uint8_t *aligned;
1915 skip_bits(&s->gb, 16); // skip padding
1918 // init byte wise reading
1919 aligned = align_get_bits(&s->gb);
1920 bytestream2_init(&gbytes, aligned, len);
1923 ret = ff_tdecode_header(&gbytes, &le, &ifd_offset);
1925 av_log(s->avctx, AV_LOG_ERROR, "mjpeg: invalid TIFF header in EXIF data\n");
1927 bytestream2_seek(&gbytes, ifd_offset, SEEK_SET);
1929 // read 0th IFD and store the metadata
1930 // (return values > 0 indicate the presence of subimage metadata)
1931 ret = ff_exif_decode_ifd(s->avctx, &gbytes, le, 0, &s->exif_metadata);
1933 av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error decoding EXIF data\n");
1937 bytes_read = bytestream2_tell(&gbytes);
1938 skip_bits(&s->gb, bytes_read << 3);
1945 if ((s->start_code == APP1) && (len > (0x28 - 8))) {
1946 id = get_bits_long(&s->gb, 32);
1949 if (id == AV_RB32("mjpg")) {
1952 4bytes pad field size
1960 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1961 av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n");
1965 if (s->start_code == APP2 && id == AV_RB32("ICC_") && len >= 10) {
1968 unsigned nummarkers;
1970 id = get_bits_long(&s->gb, 32);
1971 id2 = get_bits_long(&s->gb, 24);
1973 if (id != AV_RB32("PROF") || id2 != AV_RB24("ILE")) {
1974 av_log(s->avctx, AV_LOG_WARNING, "Invalid ICC_PROFILE header in APP2\n");
1978 skip_bits(&s->gb, 8);
1979 seqno = get_bits(&s->gb, 8);
1982 av_log(s->avctx, AV_LOG_WARNING, "Invalid sequence number in APP2\n");
1986 nummarkers = get_bits(&s->gb, 8);
1988 if (nummarkers == 0) {
1989 av_log(s->avctx, AV_LOG_WARNING, "Invalid number of markers coded in APP2\n");
1991 } else if (s->iccnum != 0 && nummarkers != s->iccnum) {
1992 av_log(s->avctx, AV_LOG_WARNING, "Mistmatch in coded number of ICC markers between markers\n");
1994 } else if (seqno > nummarkers) {
1995 av_log(s->avctx, AV_LOG_WARNING, "Mismatching sequence number and coded number of ICC markers\n");
1999 /* Allocate if this is the first APP2 we've seen. */
2000 if (s->iccnum == 0) {
2001 s->iccdata = av_mallocz(nummarkers * sizeof(*(s->iccdata)));
2002 s->iccdatalens = av_mallocz(nummarkers * sizeof(*(s->iccdatalens)));
2003 if (!s->iccdata || !s->iccdatalens) {
2004 av_log(s->avctx, AV_LOG_ERROR, "Could not allocate ICC data arrays\n");
2005 return AVERROR(ENOMEM);
2007 s->iccnum = nummarkers;
2010 if (s->iccdata[seqno - 1]) {
2011 av_log(s->avctx, AV_LOG_WARNING, "Duplicate ICC sequence number\n");
2015 s->iccdatalens[seqno - 1] = len;
2016 s->iccdata[seqno - 1] = av_malloc(len);
2017 if (!s->iccdata[seqno - 1]) {
2018 av_log(s->avctx, AV_LOG_ERROR, "Could not allocate ICC data buffer\n");
2019 return AVERROR(ENOMEM);
2022 memcpy(s->iccdata[seqno - 1], align_get_bits(&s->gb), len);
2023 skip_bits(&s->gb, len << 3);
2027 if (s->iccread > s->iccnum)
2028 av_log(s->avctx, AV_LOG_WARNING, "Read more ICC markers than are supposed to be coded\n");
2032 /* slow but needed for extreme adobe jpegs */
2034 av_log(s->avctx, AV_LOG_ERROR,
2035 "mjpeg: error, decode_app parser read over the end\n");
2037 skip_bits(&s->gb, 8);
2042 static int mjpeg_decode_com(MJpegDecodeContext *s)
2044 int len = get_bits(&s->gb, 16);
2045 if (len >= 2 && 8 * len - 16 <= get_bits_left(&s->gb)) {
2047 char *cbuf = av_malloc(len - 1);
2049 return AVERROR(ENOMEM);
2051 for (i = 0; i < len - 2; i++)
2052 cbuf[i] = get_bits(&s->gb, 8);
2053 if (i > 0 && cbuf[i - 1] == '\n')
2058 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
2059 av_log(s->avctx, AV_LOG_INFO, "comment: '%s'\n", cbuf);
2061 /* buggy avid, it puts EOI only at every 10th frame */
2062 if (!strncmp(cbuf, "AVID", 4)) {
2063 parse_avid(s, cbuf, len);
2064 } else if (!strcmp(cbuf, "CS=ITU601"))
2066 else if ((!strncmp(cbuf, "Intel(R) JPEG Library, version 1", 32) && s->avctx->codec_tag) ||
2067 (!strncmp(cbuf, "Metasoft MJPEG Codec", 20)))
2069 else if (!strcmp(cbuf, "MULTISCOPE II")) {
2070 s->avctx->sample_aspect_ratio = (AVRational) { 1, 2 };
2080 /* return the 8 bit start code value and update the search
2081 state. Return -1 if no start code found */
2082 static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
2084 const uint8_t *buf_ptr;
2089 buf_ptr = *pbuf_ptr;
2090 while (buf_end - buf_ptr > 1) {
2093 if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) {
2102 ff_dlog(NULL, "find_marker skipped %d bytes\n", skipped);
2103 *pbuf_ptr = buf_ptr;
2107 int ff_mjpeg_find_marker(MJpegDecodeContext *s,
2108 const uint8_t **buf_ptr, const uint8_t *buf_end,
2109 const uint8_t **unescaped_buf_ptr,
2110 int *unescaped_buf_size)
2113 start_code = find_marker(buf_ptr, buf_end);
2115 av_fast_padded_malloc(&s->buffer, &s->buffer_size, buf_end - *buf_ptr);
2117 return AVERROR(ENOMEM);
2119 /* unescape buffer of SOS, use special treatment for JPEG-LS */
2120 if (start_code == SOS && !s->ls) {
2121 const uint8_t *src = *buf_ptr;
2122 const uint8_t *ptr = src;
2123 uint8_t *dst = s->buffer;
2125 #define copy_data_segment(skip) do { \
2126 ptrdiff_t length = (ptr - src) - (skip); \
2128 memcpy(dst, src, length); \
2134 if (s->avctx->codec_id == AV_CODEC_ID_THP) {
2136 copy_data_segment(0);
2138 while (ptr < buf_end) {
2139 uint8_t x = *(ptr++);
2143 while (ptr < buf_end && x == 0xff) {
2148 /* 0xFF, 0xFF, ... */
2150 copy_data_segment(skip);
2152 /* decrement src as it is equal to ptr after the
2153 * copy_data_segment macro and we might want to
2154 * copy the current value of x later on */
2158 if (x < 0xd0 || x > 0xd7) {
2159 copy_data_segment(1);
2166 copy_data_segment(0);
2168 #undef copy_data_segment
2170 *unescaped_buf_ptr = s->buffer;
2171 *unescaped_buf_size = dst - s->buffer;
2172 memset(s->buffer + *unescaped_buf_size, 0,
2173 AV_INPUT_BUFFER_PADDING_SIZE);
2175 av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %"PTRDIFF_SPECIFIER" bytes\n",
2176 (buf_end - *buf_ptr) - (dst - s->buffer));
2177 } else if (start_code == SOS && s->ls) {
2178 const uint8_t *src = *buf_ptr;
2179 uint8_t *dst = s->buffer;
2185 while (src + t < buf_end) {
2186 uint8_t x = src[t++];
2188 while ((src + t < buf_end) && x == 0xff)
2197 init_put_bits(&pb, dst, t);
2199 /* unescape bitstream */
2201 uint8_t x = src[b++];
2202 put_bits(&pb, 8, x);
2203 if (x == 0xFF && b < t) {
2206 av_log(s->avctx, AV_LOG_WARNING, "Invalid escape sequence\n");
2209 put_bits(&pb, 7, x);
2213 flush_put_bits(&pb);
2215 *unescaped_buf_ptr = dst;
2216 *unescaped_buf_size = (bit_count + 7) >> 3;
2217 memset(s->buffer + *unescaped_buf_size, 0,
2218 AV_INPUT_BUFFER_PADDING_SIZE);
2220 *unescaped_buf_ptr = *buf_ptr;
2221 *unescaped_buf_size = buf_end - *buf_ptr;
2227 static void reset_icc_profile(MJpegDecodeContext *s)
2232 for (i = 0; i < s->iccnum; i++)
2233 av_freep(&s->iccdata[i]);
2234 av_freep(&s->iccdata);
2235 av_freep(&s->iccdatalens);
2241 int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
2244 AVFrame *frame = data;
2245 const uint8_t *buf = avpkt->data;
2246 int buf_size = avpkt->size;
2247 MJpegDecodeContext *s = avctx->priv_data;
2248 const uint8_t *buf_end, *buf_ptr;
2249 const uint8_t *unescaped_buf_ptr;
2251 int unescaped_buf_size;
2257 s->buf_size = buf_size;
2259 av_dict_free(&s->exif_metadata);
2260 av_freep(&s->stereo3d);
2261 s->adobe_transform = -1;
2264 reset_icc_profile(s);
2267 buf_end = buf + buf_size;
2268 while (buf_ptr < buf_end) {
2269 /* find start next marker */
2270 start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end,
2272 &unescaped_buf_size);
2274 if (start_code < 0) {
2276 } else if (unescaped_buf_size > INT_MAX / 8) {
2277 av_log(avctx, AV_LOG_ERROR,
2278 "MJPEG packet 0x%x too big (%d/%d), corrupt data?\n",
2279 start_code, unescaped_buf_size, buf_size);
2280 return AVERROR_INVALIDDATA;
2282 av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%"PTRDIFF_SPECIFIER"\n",
2283 start_code, buf_end - buf_ptr);
2285 ret = init_get_bits8(&s->gb, unescaped_buf_ptr, unescaped_buf_size);
2288 av_log(avctx, AV_LOG_ERROR, "invalid buffer\n");
2292 s->start_code = start_code;
2293 if (s->avctx->debug & FF_DEBUG_STARTCODE)
2294 av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
2296 /* process markers */
2297 if (start_code >= 0xd0 && start_code <= 0xd7) {
2298 av_log(avctx, AV_LOG_DEBUG,
2299 "restart marker: %d\n", start_code & 0x0f);
2301 } else if (start_code >= APP0 && start_code <= APP15) {
2302 if ((ret = mjpeg_decode_app(s)) < 0)
2303 av_log(avctx, AV_LOG_ERROR, "unable to decode APP fields: %s\n",
2306 } else if (start_code == COM) {
2307 ret = mjpeg_decode_com(s);
2310 } else if (start_code == DQT) {
2311 ret = ff_mjpeg_decode_dqt(s);
2318 if (!CONFIG_JPEGLS_DECODER &&
2319 (start_code == SOF48 || start_code == LSE)) {
2320 av_log(avctx, AV_LOG_ERROR, "JPEG-LS support not enabled.\n");
2321 return AVERROR(ENOSYS);
2324 if (avctx->skip_frame == AVDISCARD_ALL) {
2325 switch(start_code) {
2340 switch (start_code) {
2342 s->restart_interval = 0;
2343 s->restart_count = 0;
2344 s->raw_image_buffer = buf_ptr;
2345 s->raw_image_buffer_size = buf_end - buf_ptr;
2346 /* nothing to do on SOI */
2349 if ((ret = ff_mjpeg_decode_dht(s)) < 0) {
2350 av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
2356 if (start_code == SOF0)
2357 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_BASELINE_DCT;
2359 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_EXTENDED_SEQUENTIAL_DCT;
2363 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2367 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_PROGRESSIVE_DCT;
2371 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2375 s->avctx->profile = FF_PROFILE_MJPEG_HUFFMAN_LOSSLESS;
2376 s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
2380 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2384 s->avctx->profile = FF_PROFILE_MJPEG_JPEG_LS;
2385 s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
2389 if ((ret = ff_mjpeg_decode_sof(s)) < 0)
2393 if (!CONFIG_JPEGLS_DECODER ||
2394 (ret = ff_jpegls_decode_lse(s)) < 0)
2399 if (!avctx->hwaccel && avctx->skip_frame != AVDISCARD_ALL &&
2400 s->progressive && s->cur_scan && s->got_picture)
2401 mjpeg_idct_scan_progressive_ac(s);
2403 if (!s->got_picture) {
2404 av_log(avctx, AV_LOG_WARNING,
2405 "Found EOI before any SOF, ignoring\n");
2408 if (s->interlaced) {
2409 s->bottom_field ^= 1;
2410 /* if not bottom field, do not output image yet */
2411 if (s->bottom_field == !s->interlace_polarity)
2414 if (avctx->skip_frame == AVDISCARD_ALL) {
2416 goto the_end_no_picture;
2418 if (s->avctx->hwaccel) {
2419 ret = s->avctx->hwaccel->end_frame(s->avctx);
2423 av_freep(&s->hwaccel_picture_private);
2425 if ((ret = av_frame_ref(frame, s->picture_ptr)) < 0)
2431 int qp = FFMAX3(s->qscale[0],
2434 int qpw = (s->width + 15) / 16;
2435 AVBufferRef *qp_table_buf = av_buffer_alloc(qpw);
2437 memset(qp_table_buf->data, qp, qpw);
2438 av_frame_set_qp_table(data, qp_table_buf, 0, FF_QSCALE_TYPE_MPEG1);
2441 if(avctx->debug & FF_DEBUG_QP)
2442 av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", qp);
2447 s->raw_scan_buffer = buf_ptr;
2448 s->raw_scan_buffer_size = buf_end - buf_ptr;
2451 if (avctx->skip_frame == AVDISCARD_ALL) {
2452 skip_bits(&s->gb, get_bits_left(&s->gb));
2456 if ((ret = ff_mjpeg_decode_sos(s, NULL, 0, NULL)) < 0 &&
2457 (avctx->err_recognition & AV_EF_EXPLODE))
2461 if ((ret = mjpeg_decode_dri(s)) < 0)
2474 av_log(avctx, AV_LOG_ERROR,
2475 "mjpeg: unsupported coding type (%x)\n", start_code);
2480 /* eof process start code */
2481 buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
2482 av_log(avctx, AV_LOG_DEBUG,
2483 "marker parser used %d bytes (%d bits)\n",
2484 (get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
2486 if (s->got_picture && s->cur_scan) {
2487 av_log(avctx, AV_LOG_WARNING, "EOI missing, emulating\n");
2490 av_log(avctx, AV_LOG_FATAL, "No JPEG data found in image\n");
2491 return AVERROR_INVALIDDATA;
2497 is16bit = av_pix_fmt_desc_get(s->avctx->pix_fmt)->comp[0].step > 1;
2499 if (AV_RB32(s->upscale_h)) {
2501 av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
2502 avctx->pix_fmt == AV_PIX_FMT_YUV444P ||
2503 avctx->pix_fmt == AV_PIX_FMT_YUVJ440P ||
2504 avctx->pix_fmt == AV_PIX_FMT_YUV440P ||
2505 avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
2506 avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
2507 avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
2508 avctx->pix_fmt == AV_PIX_FMT_YUV420P16||
2509 avctx->pix_fmt == AV_PIX_FMT_YUVA420P ||
2510 avctx->pix_fmt == AV_PIX_FMT_YUVA420P16||
2511 avctx->pix_fmt == AV_PIX_FMT_GBRP ||
2512 avctx->pix_fmt == AV_PIX_FMT_GBRAP
2514 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2518 av_assert0(s->nb_components == av_pix_fmt_count_planes(s->picture_ptr->format));
2519 for (p = 0; p<s->nb_components; p++) {
2520 uint8_t *line = s->picture_ptr->data[p];
2523 if (!s->upscale_h[p])
2526 w = AV_CEIL_RSHIFT(w, hshift);
2527 h = AV_CEIL_RSHIFT(h, vshift);
2529 if (s->upscale_v[p])
2532 for (i = 0; i < h; i++) {
2533 if (s->upscale_h[p] == 1) {
2534 if (is16bit) ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 2];
2535 else line[w - 1] = line[(w - 1) / 2];
2536 for (index = w - 2; index > 0; index--) {
2538 ((uint16_t*)line)[index] = (((uint16_t*)line)[index / 2] + ((uint16_t*)line)[(index + 1) / 2]) >> 1;
2540 line[index] = (line[index / 2] + line[(index + 1) / 2]) >> 1;
2542 } else if (s->upscale_h[p] == 2) {
2544 ((uint16_t*)line)[w - 1] = ((uint16_t*)line)[(w - 1) / 3];
2546 ((uint16_t*)line)[w - 2] = ((uint16_t*)line)[w - 1];
2548 line[w - 1] = line[(w - 1) / 3];
2550 line[w - 2] = line[w - 1];
2552 for (index = w - 3; index > 0; index--) {
2553 line[index] = (line[index / 3] + line[(index + 1) / 3] + line[(index + 2) / 3] + 1) / 3;
2556 line += s->linesize[p];
2560 if (AV_RB32(s->upscale_v)) {
2562 av_assert0(avctx->pix_fmt == AV_PIX_FMT_YUVJ444P ||
2563 avctx->pix_fmt == AV_PIX_FMT_YUV444P ||
2564 avctx->pix_fmt == AV_PIX_FMT_YUVJ422P ||
2565 avctx->pix_fmt == AV_PIX_FMT_YUV422P ||
2566 avctx->pix_fmt == AV_PIX_FMT_YUVJ420P ||
2567 avctx->pix_fmt == AV_PIX_FMT_YUV420P ||
2568 avctx->pix_fmt == AV_PIX_FMT_YUV440P ||
2569 avctx->pix_fmt == AV_PIX_FMT_YUVJ440P ||
2570 avctx->pix_fmt == AV_PIX_FMT_YUVA444P ||
2571 avctx->pix_fmt == AV_PIX_FMT_YUVA420P ||
2572 avctx->pix_fmt == AV_PIX_FMT_YUVA420P16||
2573 avctx->pix_fmt == AV_PIX_FMT_GBRP ||
2574 avctx->pix_fmt == AV_PIX_FMT_GBRAP
2576 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2580 av_assert0(s->nb_components == av_pix_fmt_count_planes(s->picture_ptr->format));
2581 for (p = 0; p < s->nb_components; p++) {
2585 if (!s->upscale_v[p])
2588 w = AV_CEIL_RSHIFT(w, hshift);
2589 h = AV_CEIL_RSHIFT(h, vshift);
2591 dst = &((uint8_t *)s->picture_ptr->data[p])[(h - 1) * s->linesize[p]];
2592 for (i = h - 1; i; i--) {
2593 uint8_t *src1 = &((uint8_t *)s->picture_ptr->data[p])[i / 2 * s->linesize[p]];
2594 uint8_t *src2 = &((uint8_t *)s->picture_ptr->data[p])[(i + 1) / 2 * s->linesize[p]];
2595 if (src1 == src2 || i == h - 1) {
2596 memcpy(dst, src1, w);
2598 for (index = 0; index < w; index++)
2599 dst[index] = (src1[index] + src2[index]) >> 1;
2601 dst -= s->linesize[p];
2605 if (s->flipped && !s->rgb) {
2607 ret = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &hshift, &vshift);
2611 av_assert0(s->nb_components == av_pix_fmt_count_planes(s->picture_ptr->format));
2612 for (index=0; index<s->nb_components; index++) {
2613 uint8_t *dst = s->picture_ptr->data[index];
2614 int w = s->picture_ptr->width;
2615 int h = s->picture_ptr->height;
2616 if(index && index<3){
2617 w = AV_CEIL_RSHIFT(w, hshift);
2618 h = AV_CEIL_RSHIFT(h, vshift);
2621 uint8_t *dst2 = dst + s->picture_ptr->linesize[index]*(h-1);
2622 for (i=0; i<h/2; i++) {
2624 FFSWAP(int, dst[j], dst2[j]);
2625 dst += s->picture_ptr->linesize[index];
2626 dst2 -= s->picture_ptr->linesize[index];
2631 if (s->adobe_transform == 0 && s->avctx->pix_fmt == AV_PIX_FMT_GBRAP) {
2632 int w = s->picture_ptr->width;
2633 int h = s->picture_ptr->height;
2634 av_assert0(s->nb_components == 4);
2635 for (i=0; i<h; i++) {
2638 for (index=0; index<4; index++) {
2639 dst[index] = s->picture_ptr->data[index]
2640 + s->picture_ptr->linesize[index]*i;
2642 for (j=0; j<w; j++) {
2644 int r = dst[0][j] * k;
2645 int g = dst[1][j] * k;
2646 int b = dst[2][j] * k;
2647 dst[0][j] = g*257 >> 16;
2648 dst[1][j] = b*257 >> 16;
2649 dst[2][j] = r*257 >> 16;
2654 if (s->adobe_transform == 2 && s->avctx->pix_fmt == AV_PIX_FMT_YUVA444P) {
2655 int w = s->picture_ptr->width;
2656 int h = s->picture_ptr->height;
2657 av_assert0(s->nb_components == 4);
2658 for (i=0; i<h; i++) {
2661 for (index=0; index<4; index++) {
2662 dst[index] = s->picture_ptr->data[index]
2663 + s->picture_ptr->linesize[index]*i;
2665 for (j=0; j<w; j++) {
2667 int r = (255 - dst[0][j]) * k;
2668 int g = (128 - dst[1][j]) * k;
2669 int b = (128 - dst[2][j]) * k;
2670 dst[0][j] = r*257 >> 16;
2671 dst[1][j] = (g*257 >> 16) + 128;
2672 dst[2][j] = (b*257 >> 16) + 128;
2679 AVStereo3D *stereo = av_stereo3d_create_side_data(data);
2681 stereo->type = s->stereo3d->type;
2682 stereo->flags = s->stereo3d->flags;
2684 av_freep(&s->stereo3d);
2687 if (s->iccnum != 0 && s->iccnum == s->iccread) {
2688 AVFrameSideData *sd;
2693 /* Sum size of all parts. */
2694 for (i = 0; i < s->iccnum; i++)
2695 total_size += s->iccdatalens[i];
2697 sd = av_frame_new_side_data(data, AV_FRAME_DATA_ICC_PROFILE, total_size);
2699 av_log(s->avctx, AV_LOG_ERROR, "Could not allocate frame side data\n");
2700 return AVERROR(ENOMEM);
2703 /* Reassemble the parts, which are now in-order. */
2704 for (i = 0; i < s->iccnum; i++) {
2705 memcpy(sd->data + offset, s->iccdata[i], s->iccdatalens[i]);
2706 offset += s->iccdatalens[i];
2710 av_dict_copy(&((AVFrame *) data)->metadata, s->exif_metadata, 0);
2711 av_dict_free(&s->exif_metadata);
2714 av_log(avctx, AV_LOG_DEBUG, "decode frame unused %"PTRDIFF_SPECIFIER" bytes\n",
2716 // return buf_end - buf_ptr;
2717 return buf_ptr - buf;
2720 av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx)
2722 MJpegDecodeContext *s = avctx->priv_data;
2725 if (s->interlaced && s->bottom_field == !s->interlace_polarity && s->got_picture && !avctx->frame_number) {
2726 av_log(avctx, AV_LOG_INFO, "Single field\n");
2730 av_frame_free(&s->picture);
2731 s->picture_ptr = NULL;
2732 } else if (s->picture_ptr)
2733 av_frame_unref(s->picture_ptr);
2735 av_freep(&s->buffer);
2736 av_freep(&s->stereo3d);
2737 av_freep(&s->ljpeg_buffer);
2738 s->ljpeg_buffer_size = 0;
2740 for (i = 0; i < 3; i++) {
2741 for (j = 0; j < 4; j++)
2742 ff_free_vlc(&s->vlcs[i][j]);
2744 for (i = 0; i < MAX_COMPONENTS; i++) {
2745 av_freep(&s->blocks[i]);
2746 av_freep(&s->last_nnz[i]);
2748 av_dict_free(&s->exif_metadata);
2750 reset_icc_profile(s);
2752 av_freep(&s->hwaccel_picture_private);
2757 static void decode_flush(AVCodecContext *avctx)
2759 MJpegDecodeContext *s = avctx->priv_data;
2763 #if CONFIG_MJPEG_DECODER
2764 #define OFFSET(x) offsetof(MJpegDecodeContext, x)
2765 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2766 static const AVOption options[] = {
2767 { "extern_huff", "Use external huffman table.",
2768 OFFSET(extern_huff), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
2772 static const AVClass mjpegdec_class = {
2773 .class_name = "MJPEG decoder",
2774 .item_name = av_default_item_name,
2776 .version = LIBAVUTIL_VERSION_INT,
2779 AVCodec ff_mjpeg_decoder = {
2781 .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
2782 .type = AVMEDIA_TYPE_VIDEO,
2783 .id = AV_CODEC_ID_MJPEG,
2784 .priv_data_size = sizeof(MJpegDecodeContext),
2785 .init = ff_mjpeg_decode_init,
2786 .close = ff_mjpeg_decode_end,
2787 .decode = ff_mjpeg_decode_frame,
2788 .flush = decode_flush,
2789 .capabilities = AV_CODEC_CAP_DR1,
2791 .priv_class = &mjpegdec_class,
2792 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
2793 FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
2794 .hw_configs = (const AVCodecHWConfigInternal*[]) {
2795 #if CONFIG_MJPEG_NVDEC_HWACCEL
2796 HWACCEL_NVDEC(mjpeg),
2798 #if CONFIG_MJPEG_VAAPI_HWACCEL
2799 HWACCEL_VAAPI(mjpeg),
2805 #if CONFIG_THP_DECODER
2806 AVCodec ff_thp_decoder = {
2808 .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
2809 .type = AVMEDIA_TYPE_VIDEO,
2810 .id = AV_CODEC_ID_THP,
2811 .priv_data_size = sizeof(MJpegDecodeContext),
2812 .init = ff_mjpeg_decode_init,
2813 .close = ff_mjpeg_decode_end,
2814 .decode = ff_mjpeg_decode_frame,
2815 .flush = decode_flush,
2816 .capabilities = AV_CODEC_CAP_DR1,
2818 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,