54
56
memset(huff_size, 0, sizeof(huff_size));
55
57
ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table);
58
huff_sym[i]= i + 16*is_ac;
60
if(is_ac) huff_sym[0]= 16*256;
62
return init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1, huff_code, 2, 2, huff_sym, 2, 2, use_static);
59
for (i = 0; i < 256; i++)
60
huff_sym[i] = i + 16 * is_ac;
63
huff_sym[0] = 16 * 256;
65
return init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1,
66
huff_code, 2, 2, huff_sym, 2, 2, use_static);
65
static void build_basic_mjpeg_vlc(MJpegDecodeContext * s) {
69
static void build_basic_mjpeg_vlc(MJpegDecodeContext *s)
66
71
build_vlc(&s->vlcs[0][0], ff_mjpeg_bits_dc_luminance,
67
72
ff_mjpeg_val_dc, 12, 0, 0);
68
73
build_vlc(&s->vlcs[0][1], ff_mjpeg_bits_dc_chrominance,
88
93
dsputil_init(&s->dsp, avctx);
89
94
ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
93
98
s->first_picture = 1;
94
s->org_height = avctx->coded_height;
99
s->org_height = avctx->coded_height;
95
100
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
97
102
build_basic_mjpeg_vlc(s);
104
#if FF_API_MJPEG_GLOBAL_OPTS
99
105
if (avctx->flags & CODEC_FLAG_EXTERN_HUFF)
108
if (s->extern_huff) {
101
109
av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n");
102
init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8);
110
init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8);
103
111
if (ff_mjpeg_decode_dht(s)) {
104
av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table, switching back to internal\n");
105
build_basic_mjpeg_vlc(s);
112
av_log(avctx, AV_LOG_ERROR,
113
"mjpeg: error using external huffman table\n");
114
return AVERROR_INVALIDDATA;
108
if (avctx->extradata_size > 9 &&
109
AV_RL32(avctx->extradata + 4) == MKTAG('f','i','e','l')) {
110
if (avctx->extradata[9] == 6) { /* quicktime icefloe 019 */
111
s->interlace_polarity = 1; /* bottom field first */
112
av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n");
117
if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */
118
s->interlace_polarity = 1; /* bottom field first */
119
av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n");
115
121
if (avctx->codec->id == CODEC_ID_AMV)
213
217
int len, nb_components, i, width, height, pix_fmt_id;
215
219
/* XXX: verify len field validity */
216
len = get_bits(&s->gb, 16);
217
s->bits= get_bits(&s->gb, 8);
219
if(s->pegasus_rct) s->bits=9;
220
if(s->bits==9 && !s->pegasus_rct) s->rct=1; //FIXME ugly
222
if (s->bits != 8 && !s->lossless){
220
len = get_bits(&s->gb, 16);
221
s->bits = get_bits(&s->gb, 8);
225
if (s->bits == 9 && !s->pegasus_rct)
226
s->rct = 1; // FIXME ugly
228
if (s->bits != 8 && !s->lossless) {
223
229
av_log(s->avctx, AV_LOG_ERROR, "only 8 bits/component accepted\n");
227
233
height = get_bits(&s->gb, 16);
228
width = get_bits(&s->gb, 16);
234
width = get_bits(&s->gb, 16);
230
//HACK for odd_height.mov
231
if(s->interlaced && s->width == width && s->height == height + 1)
236
// HACK for odd_height.mov
237
if (s->interlaced && s->width == width && s->height == height + 1)
232
238
height= s->height;
234
240
av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
235
if(av_image_check_size(width, height, 0, s->avctx))
241
if (av_image_check_size(width, height, 0, s->avctx))
238
244
nb_components = get_bits(&s->gb, 8);
239
245
if (nb_components <= 0 ||
240
246
nb_components > MAX_COMPONENTS)
242
if (s->ls && !(s->bits <= 8 || nb_components == 1)){
243
av_log(s->avctx, AV_LOG_ERROR, "only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n");
248
if (s->ls && !(s->bits <= 8 || nb_components == 1)) {
249
av_log(s->avctx, AV_LOG_ERROR,
250
"only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n");
246
253
s->nb_components = nb_components;
249
for(i=0;i<nb_components;i++) {
256
for (i = 0; i < nb_components; i++) {
250
257
/* component id */
251
258
s->component_id[i] = get_bits(&s->gb, 8) - 1;
252
s->h_count[i] = get_bits(&s->gb, 4);
253
s->v_count[i] = get_bits(&s->gb, 4);
259
s->h_count[i] = get_bits(&s->gb, 4);
260
s->v_count[i] = get_bits(&s->gb, 4);
254
261
/* compute hmax and vmax (only used in interleaved case) */
255
262
if (s->h_count[i] > s->h_max)
256
263
s->h_max = s->h_count[i];
259
266
s->quant_index[i] = get_bits(&s->gb, 8);
260
267
if (s->quant_index[i] >= 4)
262
av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n", i, s->h_count[i],
263
s->v_count[i], s->component_id[i], s->quant_index[i]);
269
av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n",
270
i, s->h_count[i], s->v_count[i],
271
s->component_id[i], s->quant_index[i]);
266
if(s->ls && (s->h_max > 1 || s->v_max > 1)) {
267
av_log(s->avctx, AV_LOG_ERROR, "Subsampling in JPEG-LS is not supported.\n");
274
if (s->ls && (s->h_max > 1 || s->v_max > 1)) {
275
av_log(s->avctx, AV_LOG_ERROR,
276
"Subsampling in JPEG-LS is not supported.\n");
271
if(s->v_max==1 && s->h_max==1 && s->lossless==1) s->rgb=1;
280
if (s->v_max == 1 && s->h_max == 1 && s->lossless == 1)
273
283
/* if different size, realloc/alloc picture */
274
284
/* XXX: also check h_count and v_count */
275
285
if (width != s->width || height != s->height) {
276
286
av_freep(&s->qscale_table);
280
290
s->interlaced = 0;
282
292
/* test interlaced mode */
283
if (s->first_picture &&
293
if (s->first_picture &&
284
294
s->org_height != 0 &&
285
295
s->height < ((s->org_height * 3) / 4)) {
287
s->bottom_field = s->interlace_polarity;
297
s->bottom_field = s->interlace_polarity;
288
298
s->picture_ptr->interlaced_frame = 1;
289
s->picture_ptr->top_field_first = !s->interlace_polarity;
299
s->picture_ptr->top_field_first = !s->interlace_polarity;
293
303
avcodec_set_dimensions(s->avctx, width, height);
295
s->qscale_table= av_mallocz((s->width+15)/16);
305
s->qscale_table = av_mallocz((s->width + 15) / 16);
297
306
s->first_picture = 0;
300
if(s->interlaced && (s->bottom_field == !s->interlace_polarity))
309
if (s->interlaced && (s->bottom_field == !s->interlace_polarity))
303
312
/* XXX: not complete test ! */
336
346
av_log(s->avctx, AV_LOG_ERROR, "Unhandled pixel format 0x%x\n", pix_fmt_id);
340
if(s->nb_components > 1)
350
if (s->nb_components > 1)
341
351
s->avctx->pix_fmt = PIX_FMT_RGB24;
342
else if(s->bits <= 8)
352
else if (s->bits <= 8)
343
353
s->avctx->pix_fmt = PIX_FMT_GRAY8;
345
355
s->avctx->pix_fmt = PIX_FMT_GRAY16;
348
if(s->picture_ptr->data[0])
358
if (s->picture_ptr->data[0])
349
359
s->avctx->release_buffer(s->avctx, s->picture_ptr);
351
if(s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0){
361
if (s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0) {
352
362
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
355
s->picture_ptr->pict_type= AV_PICTURE_TYPE_I;
356
s->picture_ptr->key_frame= 1;
360
s->linesize[i]= s->picture_ptr->linesize[i] << s->interlaced;
363
// printf("%d %d %d %d %d %d\n", s->width, s->height, s->linesize[0], s->linesize[1], s->interlaced, s->avctx->height);
365
if (len != (8+(3*nb_components)))
365
s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
366
s->picture_ptr->key_frame = 1;
369
for (i = 0; i < 3; i++)
370
s->linesize[i] = s->picture_ptr->linesize[i] << s->interlaced;
372
// printf("%d %d %d %d %d %d\n",
373
// s->width, s->height, s->linesize[0], s->linesize[1],
374
// s->interlaced, s->avctx->height);
376
if (len != (8 + (3 * nb_components)))
367
377
av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len);
370
379
/* totally blank picture as progressive JPEG will only add details to it */
372
int bw = (width + s->h_max*8-1) / (s->h_max*8);
373
int bh = (height + s->v_max*8-1) / (s->v_max*8);
374
for(i=0; i<s->nb_components; i++) {
380
if (s->progressive) {
381
int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8);
382
int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8);
383
for (i = 0; i < s->nb_components; i++) {
375
384
int size = bw * bh * s->h_count[i] * s->v_count[i];
376
385
av_freep(&s->blocks[i]);
377
386
av_freep(&s->last_nnz[i]);
378
s->blocks[i] = av_malloc(size * sizeof(**s->blocks));
379
s->last_nnz[i] = av_mallocz(size * sizeof(**s->last_nnz));
387
s->blocks[i] = av_malloc(size * sizeof(**s->blocks));
388
s->last_nnz[i] = av_mallocz(size * sizeof(**s->last_nnz));
380
389
s->block_stride[i] = bw * s->h_count[i];
382
391
memset(s->coefs_finished, 0, sizeof(s->coefs_finished));
390
399
code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
393
av_log(s->avctx, AV_LOG_WARNING, "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n", 0, dc_index,
394
&s->vlcs[0][dc_index]);
401
av_log(s->avctx, AV_LOG_WARNING,
402
"mjpeg_decode_dc: bad vlc: %d:%d (%p)\n",
403
0, dc_index, &s->vlcs[0][dc_index]);
399
408
return get_xbits(&s->gb, code);
404
413
/* decode block and dequantize */
405
static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
406
int component, int dc_index, int ac_index, int16_t *quant_matrix)
414
static int decode_block(MJpegDecodeContext *s, DCTELEM *block, int component,
415
int dc_index, int ac_index, int16_t *quant_matrix)
408
417
int code, i, j, level, val;
469
479
/* decode block and dequantize - progressive JPEG version */
470
static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block, uint8_t *last_nnz,
471
int ac_index, int16_t *quant_matrix,
480
static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block,
481
uint8_t *last_nnz, int ac_index,
482
int16_t *quant_matrix,
472
483
int ss, int se, int Al, int *EOBRUN)
474
485
int code, i, j, level, val, run;
480
{OPEN_READER(re, &s->gb);
482
UPDATE_CACHE(re, &s->gb);
483
GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
485
run = ((unsigned) code) >> 4;
489
if(code > MIN_CACHE_BITS - 16){
490
UPDATE_CACHE(re, &s->gb);
493
int cache=GET_CACHE(re,&s->gb);
494
int sign=(~cache)>>31;
495
level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
498
LAST_SKIP_BITS(re, &s->gb, code);
502
j = s->scantable.permutated[se];
503
block[j] = level * quant_matrix[j] << Al;
493
OPEN_READER(re, &s->gb);
494
for (i = ss; ; i++) {
495
UPDATE_CACHE(re, &s->gb);
496
GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
498
run = ((unsigned) code) >> 4;
502
if (code > MIN_CACHE_BITS - 16)
503
UPDATE_CACHE(re, &s->gb);
506
int cache = GET_CACHE(re, &s->gb);
507
int sign = (~cache) >> 31;
508
level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
506
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
509
j = s->scantable.permutated[i];
510
block[j] = level * quant_matrix[j] << Al;
512
if(run == 0xF){// ZRL - skip 15 coefficients
511
LAST_SKIP_BITS(re, &s->gb, code);
515
av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
515
j = s->scantable.permutated[se];
516
block[j] = level * quant_matrix[j] << Al;
519
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
521
UPDATE_CACHE(re, &s->gb);
522
val += NEG_USR32(GET_CACHE(re, &s->gb), run);
523
LAST_SKIP_BITS(re, &s->gb, run);
522
j = s->scantable.permutated[i];
523
block[j] = level * quant_matrix[j] << Al;
525
if (run == 0xF) {// ZRL - skip 15 coefficients
528
av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i);
534
UPDATE_CACHE(re, &s->gb);
535
val += NEG_USR32(GET_CACHE(re, &s->gb), run);
536
LAST_SKIP_BITS(re, &s->gb, run);
543
CLOSE_READER(re, &s->gb);
530
CLOSE_READER(re, &s->gb);}
536
#define REFINE_BIT(j) {\
537
UPDATE_CACHE(re, &s->gb);\
538
sign = block[j]>>15;\
539
block[j] += SHOW_UBITS(re, &s->gb, 1) * ((quant_matrix[j]^sign)-sign) << Al;\
540
LAST_SKIP_BITS(re, &s->gb, 1);\
552
#define REFINE_BIT(j) { \
553
UPDATE_CACHE(re, &s->gb); \
554
sign = block[j] >> 15; \
555
block[j] += SHOW_UBITS(re, &s->gb, 1) * \
556
((quant_matrix[j] ^ sign) - sign) << Al; \
557
LAST_SKIP_BITS(re, &s->gb, 1); \
548
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);\
553
j = s->scantable.permutated[i];\
565
av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \
570
j = s->scantable.permutated[i]; \
573
else if (run-- == 0) \
560
577
/* decode block and dequantize - progressive JPEG refinement pass */
561
static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_t *last_nnz,
562
int ac_index, int16_t *quant_matrix,
563
int ss, int se, int Al, int *EOBRUN)
578
static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block,
580
int ac_index, int16_t *quant_matrix,
581
int ss, int se, int Al, int *EOBRUN)
565
int code, i=ss, j, sign, val, run;
566
int last = FFMIN(se, *last_nnz);
583
int code, i = ss, j, sign, val, run;
584
int last = FFMIN(se, *last_nnz);
568
586
OPEN_READER(re, &s->gb);
573
591
UPDATE_CACHE(re, &s->gb);
574
592
GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2);
577
595
run = ((unsigned) code) >> 4;
578
596
UPDATE_CACHE(re, &s->gb);
579
597
val = SHOW_UBITS(re, &s->gb, 1);
622
640
#undef REFINE_BIT
625
static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point_transform){
643
static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor,
626
646
int i, mb_x, mb_y;
627
647
uint16_t (*buffer)[4];
628
648
int left[3], top[3], topleft[3];
629
const int linesize= s->linesize[0];
630
const int mask= (1<<s->bits)-1;
632
av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size, (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
633
buffer= s->ljpeg_buffer;
636
buffer[0][i]= 1 << (s->bits + point_transform - 1);
638
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
639
const int modified_predictor= mb_y ? predictor : 1;
649
const int linesize = s->linesize[0];
650
const int mask = (1 << s->bits) - 1;
652
av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size,
653
(unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0]));
654
buffer = s->ljpeg_buffer;
656
for (i = 0; i < 3; i++)
657
buffer[0][i] = 1 << (s->bits + point_transform - 1);
659
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
660
const int modified_predictor = mb_y ? predictor : 1;
640
661
uint8_t *ptr = s->picture_ptr->data[0] + (linesize * mb_y);
642
663
if (s->interlaced && s->bottom_field)
643
664
ptr += linesize >> 1;
646
top[i]= left[i]= topleft[i]= buffer[0][i];
648
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
666
for (i = 0; i < 3; i++)
667
top[i] = left[i] = topleft[i] = buffer[0][i];
669
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
649
670
if (s->restart_interval && !s->restart_count)
650
671
s->restart_count = s->restart_interval;
673
for (i = 0; i < 3; i++) {
656
top[i]= buffer[mb_x][i];
677
top[i] = buffer[mb_x][i];
658
679
PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
661
buffer[mb_x][i]= mask & (pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform));
681
left[i] = buffer[mb_x][i] =
682
mask & (pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform));
664
685
if (s->restart_interval && !--s->restart_count) {
671
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
672
ptr[4*mb_x+1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200)>>2);
673
ptr[4*mb_x+0] = buffer[mb_x][1] + ptr[4*mb_x+1];
674
ptr[4*mb_x+2] = buffer[mb_x][2] + ptr[4*mb_x+1];
676
}else if(s->pegasus_rct){
677
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
678
ptr[4*mb_x+1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2])>>2);
679
ptr[4*mb_x+0] = buffer[mb_x][1] + ptr[4*mb_x+1];
680
ptr[4*mb_x+2] = buffer[mb_x][2] + ptr[4*mb_x+1];
683
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
684
ptr[4*mb_x+0] = buffer[mb_x][2];
685
ptr[4*mb_x+1] = buffer[mb_x][1];
686
ptr[4*mb_x+2] = buffer[mb_x][0];
692
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
693
ptr[4 * mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200) >> 2);
694
ptr[4 * mb_x + 0] = buffer[mb_x][1] + ptr[4 * mb_x + 1];
695
ptr[4 * mb_x + 2] = buffer[mb_x][2] + ptr[4 * mb_x + 1];
697
} else if (s->pegasus_rct) {
698
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
699
ptr[4 * mb_x + 1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2]) >> 2);
700
ptr[4 * mb_x + 0] = buffer[mb_x][1] + ptr[4 * mb_x + 1];
701
ptr[4 * mb_x + 2] = buffer[mb_x][2] + ptr[4 * mb_x + 1];
704
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
705
ptr[4 * mb_x + 0] = buffer[mb_x][2];
706
ptr[4 * mb_x + 1] = buffer[mb_x][1];
707
ptr[4 * mb_x + 2] = buffer[mb_x][0];
693
static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point_transform){
714
static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor,
694
717
int i, mb_x, mb_y;
695
const int nb_components=3;
718
const int nb_components = 3;
697
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
698
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
720
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
721
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
699
722
if (s->restart_interval && !s->restart_count)
700
723
s->restart_count = s->restart_interval;
702
if(mb_x==0 || mb_y==0 || s->interlaced){
703
for(i=0;i<nb_components;i++) {
725
if (mb_x == 0 || mb_y == 0 || s->interlaced) {
726
for (i = 0; i < nb_components; i++) {
705
728
int n, h, v, x, y, c, j, linesize;
707
c = s->comp_index[i];
712
linesize= s->linesize[c];
730
c = s->comp_index[i];
735
linesize = s->linesize[c];
737
for (j = 0; j < n; j++) {
717
ptr = s->picture_ptr->data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
720
pred= 128 << point_transform;
726
pred= ptr[-linesize];
728
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
739
// FIXME optimize this crap
740
ptr = s->picture_ptr->data[c] +
741
(linesize * (v * mb_y + y)) +
743
if (y == 0 && mb_y == 0) {
744
if (x == 0 && mb_x == 0)
745
pred = 128 << point_transform;
749
if (x == 0 && mb_x == 0)
750
pred = ptr[-linesize];
752
PREDICT(pred, ptr[-linesize - 1],
753
ptr[-linesize], ptr[-1], predictor);
732
756
if (s->interlaced && s->bottom_field)
733
757
ptr += linesize >> 1;
734
*ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
758
*ptr = pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
791
static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, int Al,
792
const uint8_t *mb_bitmask, const AVFrame *reference){
819
static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah,
820
int Al, const uint8_t *mb_bitmask,
821
const AVFrame *reference)
793
823
int i, mb_x, mb_y;
794
uint8_t* data[MAX_COMPONENTS];
824
uint8_t *data[MAX_COMPONENTS];
795
825
const uint8_t *reference_data[MAX_COMPONENTS];
796
826
int linesize[MAX_COMPONENTS];
797
827
GetBitContext mb_bitmask_gb;
800
init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height);
830
init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
803
if(s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) {
804
av_log(s->avctx, AV_LOG_ERROR, "Can not flip image with CODEC_FLAG_EMU_EDGE set!\n");
832
if (s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) {
833
av_log(s->avctx, AV_LOG_ERROR,
834
"Can not flip image with CODEC_FLAG_EMU_EDGE set!\n");
807
for(i=0; i < nb_components; i++) {
808
int c = s->comp_index[i];
838
for (i = 0; i < nb_components; i++) {
839
int c = s->comp_index[i];
809
840
data[c] = s->picture_ptr->data[c];
810
841
reference_data[c] = reference ? reference->data[c] : NULL;
811
linesize[c]=s->linesize[c];
842
linesize[c] = s->linesize[c];
812
843
s->coefs_finished[c] |= 1;
814
//picture should be flipped upside-down for this codec
815
int offset = (linesize[c] * (s->v_scount[i] * (8 * s->mb_height -((s->height/s->v_max)&7)) - 1 ));
845
// picture should be flipped upside-down for this codec
846
int offset = (linesize[c] * (s->v_scount[i] *
847
(8 * s->mb_height - ((s->height / s->v_max) & 7)) - 1));
817
849
reference_data[c] += offset;
822
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
823
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
854
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
855
for (mb_x = 0; mb_x < s->mb_width; mb_x++) {
824
856
const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
826
858
if (s->restart_interval && !s->restart_count)
827
859
s->restart_count = s->restart_interval;
829
if(get_bits_count(&s->gb)>s->gb.size_in_bits){
830
av_log(s->avctx, AV_LOG_ERROR, "overread %d\n", get_bits_count(&s->gb) - s->gb.size_in_bits);
861
if (get_bits_count(&s->gb)>s->gb.size_in_bits) {
862
av_log(s->avctx, AV_LOG_ERROR, "overread %d\n",
863
get_bits_count(&s->gb) - s->gb.size_in_bits);
833
for(i=0;i<nb_components;i++) {
866
for (i = 0; i < nb_components; i++) {
835
868
int n, h, v, x, y, c, j;
836
869
int block_offset;
840
873
v = s->v_scount[i];
876
for (j = 0; j < n; j++) {
844
877
block_offset = (((linesize[c] * (v * mb_y + y) * 8) +
845
878
(h * mb_x + x) * 8) >> s->avctx->lowres);
847
if(s->interlaced && s->bottom_field)
880
if (s->interlaced && s->bottom_field)
848
881
block_offset += linesize[c] >> 1;
849
882
ptr = data[c] + block_offset;
850
if(!s->progressive) {
852
mjpeg_copy_block(ptr, reference_data[c] + block_offset, linesize[c], s->avctx->lowres);
854
s->dsp.clear_block(s->block);
855
if(decode_block(s, s->block, i,
856
s->dc_index[i], s->ac_index[i],
857
s->quant_matrixes[ s->quant_index[c] ]) < 0) {
858
av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
861
s->dsp.idct_put(ptr, linesize[c], s->block);
883
if (!s->progressive) {
885
mjpeg_copy_block(ptr, reference_data[c] + block_offset,
886
linesize[c], s->avctx->lowres);
888
s->dsp.clear_block(s->block);
889
if (decode_block(s, s->block, i,
890
s->dc_index[i], s->ac_index[i],
891
s->quant_matrixes[s->quant_index[c]]) < 0) {
892
av_log(s->avctx, AV_LOG_ERROR,
893
"error y=%d x=%d\n", mb_y, mb_x);
896
s->dsp.idct_put(ptr, linesize[c], s->block);
864
int block_idx = s->block_stride[c] * (v * mb_y + y) + (h * mb_x + x);
899
int block_idx = s->block_stride[c] * (v * mb_y + y) +
865
901
DCTELEM *block = s->blocks[c][block_idx];
867
block[0] += get_bits1(&s->gb) * s->quant_matrixes[ s->quant_index[c] ][0] << Al;
868
else if(decode_dc_progressive(s, block, i, s->dc_index[i], s->quant_matrixes[ s->quant_index[c] ], Al) < 0) {
869
av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
903
block[0] += get_bits1(&s->gb) *
904
s->quant_matrixes[s->quant_index[c]][0] << Al;
905
else if (decode_dc_progressive(s, block, i, s->dc_index[i],
906
s->quant_matrixes[s->quant_index[c]],
908
av_log(s->avctx, AV_LOG_ERROR,
909
"error y=%d x=%d\n", mb_y, mb_x);
873
// av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n", mb_y, mb_x);
874
//av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n", mb_x, mb_y, x, y, c, s->bottom_field, (v * mb_y + y) * 8, (h * mb_x + x) * 8);
913
// av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n",
915
// av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n",
916
// mb_x, mb_y, x, y, c, s->bottom_field,
917
// (v * mb_y + y) * 8, (h * mb_x + x) * 8);
882
if (s->restart_interval && !--s->restart_count) {
883
align_get_bits(&s->gb);
884
skip_bits(&s->gb, 16); /* skip RSTn */
885
for (i=0; i<nb_components; i++) /* reset dc */
886
s->last_dc[i] = 1024;
925
if (s->restart_interval) {
927
i = 8 + ((-get_bits_count(&s->gb)) & 7);
929
if (show_bits(&s->gb, i) == (1 << i) - 1) {
930
int pos = get_bits_count(&s->gb);
931
align_get_bits(&s->gb);
932
while (get_bits_left(&s->gb) >= 8 && show_bits(&s->gb, 8) == 0xFF)
933
skip_bits(&s->gb, 8);
934
if ((get_bits(&s->gb, 8) & 0xF8) == 0xD0) {
935
for (i = 0; i < nb_components; i++) /* reset dc */
936
s->last_dc[i] = 1024;
938
skip_bits_long(&s->gb, pos - get_bits_count(&s->gb));
893
static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, int se, int Ah, int Al,
894
const uint8_t *mb_bitmask, const AVFrame *reference){
946
static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
947
int se, int Ah, int Al,
948
const uint8_t *mb_bitmask,
949
const AVFrame *reference)
897
953
int c = s->comp_index[0];
898
uint8_t* data = s->picture_ptr->data[c];
954
uint8_t *data = s->picture_ptr->data[c];
899
955
const uint8_t *reference_data = reference ? reference->data[c] : NULL;
900
int linesize = s->linesize[c];
956
int linesize = s->linesize[c];
901
957
int last_scan = 0;
902
int16_t *quant_matrix = s->quant_matrixes[ s->quant_index[c] ];
958
int16_t *quant_matrix = s->quant_matrixes[s->quant_index[c]];
903
959
GetBitContext mb_bitmask_gb;
906
init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height);
962
init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height);
910
s->coefs_finished[c] |= (1LL<<(se+1))-(1LL<<ss);
965
s->coefs_finished[c] |= (1LL << (se + 1)) - (1LL << ss);
911
966
last_scan = !~s->coefs_finished[c];
914
if(s->interlaced && s->bottom_field) {
915
int offset = linesize >> 1;
969
if (s->interlaced && s->bottom_field) {
970
int offset = linesize >> 1;
917
972
reference_data += offset;
920
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
921
int block_offset = (mb_y*linesize*8 >> s->avctx->lowres);
922
uint8_t *ptr = data + block_offset;
923
int block_idx = mb_y * s->block_stride[c];
975
for (mb_y = 0; mb_y < s->mb_height; mb_y++) {
976
int block_offset = (mb_y * linesize * 8 >> s->avctx->lowres);
977
uint8_t *ptr = data + block_offset;
978
int block_idx = mb_y * s->block_stride[c];
924
979
DCTELEM (*block)[64] = &s->blocks[c][block_idx];
925
uint8_t *last_nnz = &s->last_nnz[c][block_idx];
926
for(mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
980
uint8_t *last_nnz = &s->last_nnz[c][block_idx];
981
for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) {
927
982
const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb);
932
ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
933
quant_matrix, ss, se, Al, &EOBRUN);
935
ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
936
quant_matrix, ss, se, Al, &EOBRUN);
938
av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
987
ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0],
988
quant_matrix, ss, se, Al, &EOBRUN);
990
ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0],
991
quant_matrix, ss, se, Al, &EOBRUN);
993
av_log(s->avctx, AV_LOG_ERROR,
994
"error y=%d x=%d\n", mb_y, mb_x);
945
mjpeg_copy_block(ptr, reference_data + block_offset, linesize, s->avctx->lowres);
1001
mjpeg_copy_block(ptr, reference_data + block_offset,
1002
linesize, s->avctx->lowres);
947
s->dsp.idct_put(ptr, linesize, *block);
948
ptr += 8 >> s->avctx->lowres;
1004
s->dsp.idct_put(ptr, linesize, *block);
1005
ptr += 8 >> s->avctx->lowres;
956
int ff_mjpeg_decode_sos(MJpegDecodeContext *s,
957
const uint8_t *mb_bitmask, const AVFrame *reference)
1013
int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask,
1014
const AVFrame *reference)
959
1016
int len, nb_components, i, h, v, predictor, point_transform;
961
const int block_size= s->lossless ? 1 : 8;
1018
const int block_size = s->lossless ? 1 : 8;
962
1019
int ilv, prev_shift;
964
1021
/* XXX: verify len field validity */
965
1022
len = get_bits(&s->gb, 16);
966
1023
nb_components = get_bits(&s->gb, 8);
967
if (nb_components == 0 || nb_components > MAX_COMPONENTS){
968
av_log(s->avctx, AV_LOG_ERROR, "decode_sos: nb_components (%d) unsupported\n", nb_components);
1024
if (nb_components == 0 || nb_components > MAX_COMPONENTS) {
1025
av_log(s->avctx, AV_LOG_ERROR,
1026
"decode_sos: nb_components (%d) unsupported\n", nb_components);
971
if (len != 6+2*nb_components)
1029
if (len != 6 + 2 * nb_components) {
973
1030
av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len);
976
for(i=0;i<nb_components;i++) {
1033
for (i = 0; i < nb_components; i++) {
977
1034
id = get_bits(&s->gb, 8) - 1;
978
1035
av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id);
979
1036
/* find component index */
980
for(index=0;index<s->nb_components;index++)
1037
for (index = 0; index < s->nb_components; index++)
981
1038
if (id == s->component_id[index])
983
if (index == s->nb_components)
985
av_log(s->avctx, AV_LOG_ERROR, "decode_sos: index(%d) out of components\n", index);
1040
if (index == s->nb_components) {
1041
av_log(s->avctx, AV_LOG_ERROR,
1042
"decode_sos: index(%d) out of components\n", index);
988
1045
/* Metasoft MJPEG codec has Cb and Cr swapped */
1002
1059
if (s->dc_index[i] < 0 || s->ac_index[i] < 0 ||
1003
1060
s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
1004
1061
goto out_of_range;
1005
if (!s->vlcs[0][s->dc_index[i]].table || !s->vlcs[1][s->ac_index[i]].table)
1062
if (!s->vlcs[0][s->dc_index[i]].table ||
1063
!s->vlcs[1][s->ac_index[i]].table)
1006
1064
goto out_of_range;
1009
predictor= get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
1010
ilv= get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */
1011
prev_shift = get_bits(&s->gb, 4); /* Ah */
1012
point_transform= get_bits(&s->gb, 4); /* Al */
1067
predictor = get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
1068
ilv = get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */
1069
prev_shift = get_bits(&s->gb, 4); /* Ah */
1070
point_transform = get_bits(&s->gb, 4); /* Al */
1014
for(i=0;i<nb_components;i++)
1072
for (i = 0; i < nb_components; i++)
1015
1073
s->last_dc[i] = 1024;
1017
1075
if (nb_components > 1) {
1018
1076
/* interleaved stream */
1019
1077
s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size);
1020
1078
s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size);
1021
} else if(!s->ls) { /* skip this for JPEG-LS */
1079
} else if (!s->ls) { /* skip this for JPEG-LS */
1022
1080
h = s->h_max / s->h_scount[0];
1023
1081
v = s->v_max / s->v_scount[0];
1024
s->mb_width = (s->width + h * block_size - 1) / (h * block_size);
1025
s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
1082
s->mb_width = (s->width + h * block_size - 1) / (h * block_size);
1083
s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
1026
1084
s->nb_blocks[0] = 1;
1031
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
1032
av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d %s\n", s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
1089
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1090
av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d %s\n",
1091
s->lossless ? "lossless" : "sequential DCT", s->rgb ? "RGB" : "",
1033
1092
predictor, point_transform, ilv, s->bits,
1034
1093
s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""));
1038
1097
for (i = s->mjpb_skiptosod; i > 0; i--)
1039
1098
skip_bits(&s->gb, 8);
1042
if(CONFIG_JPEGLS_DECODER && s->ls){
1101
if (CONFIG_JPEGLS_DECODER && s->ls) {
1044
1103
// reset_ls_coding_parameters(s, 0);
1046
if(ff_jpegls_decode_picture(s, predictor, point_transform, ilv) < 0)
1105
if (ff_jpegls_decode_picture(s, predictor, point_transform, ilv) < 0)
1050
if(ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0)
1109
if (ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0)
1053
if(ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0)
1112
if (ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0)
1058
if(s->progressive && predictor) {
1059
if(mjpeg_decode_scan_progressive_ac(s, predictor, ilv, prev_shift, point_transform,
1060
mb_bitmask, reference) < 0)
1117
if (s->progressive && predictor) {
1118
if (mjpeg_decode_scan_progressive_ac(s, predictor, ilv, prev_shift,
1120
mb_bitmask, reference) < 0)
1063
if(mjpeg_decode_scan(s, nb_components, prev_shift, point_transform,
1064
mb_bitmask, reference) < 0)
1123
if (mjpeg_decode_scan(s, nb_components, prev_shift, point_transform,
1124
mb_bitmask, reference) < 0)
1135
if (id == AV_RL32("JFIF"))
1196
if (id == AV_RL32("JFIF")) {
1137
1197
int t_w, t_h, v1, v2;
1138
1198
skip_bits(&s->gb, 8); /* the trailing zero-byte */
1139
v1= get_bits(&s->gb, 8);
1140
v2= get_bits(&s->gb, 8);
1199
v1 = get_bits(&s->gb, 8);
1200
v2 = get_bits(&s->gb, 8);
1141
1201
skip_bits(&s->gb, 8);
1143
s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 16);
1144
s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 16);
1203
s->avctx->sample_aspect_ratio.num = get_bits(&s->gb, 16);
1204
s->avctx->sample_aspect_ratio.den = get_bits(&s->gb, 16);
1146
1206
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1147
av_log(s->avctx, AV_LOG_INFO, "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
1149
s->avctx->sample_aspect_ratio.num,
1150
s->avctx->sample_aspect_ratio.den
1207
av_log(s->avctx, AV_LOG_INFO,
1208
"mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n",
1210
s->avctx->sample_aspect_ratio.num,
1211
s->avctx->sample_aspect_ratio.den);
1153
1213
t_w = get_bits(&s->gb, 8);
1154
1214
t_h = get_bits(&s->gb, 8);
1157
1216
/* skip thumbnail */
1158
if (len-10-(t_w*t_h*3) > 0)
1217
if (len -10 - (t_w * t_h * 3) > 0)
1218
len -= t_w * t_h * 3;
1165
if (id == AV_RL32("Adob") && (get_bits(&s->gb, 8) == 'e'))
1224
if (id == AV_RL32("Adob") && (get_bits(&s->gb, 8) == 'e')) {
1167
1225
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1168
1226
av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found\n");
1169
1227
skip_bits(&s->gb, 16); /* version */
1170
1228
skip_bits(&s->gb, 16); /* flags0 */
1171
1229
skip_bits(&s->gb, 16); /* flags1 */
1172
skip_bits(&s->gb, 8); /* transform */
1230
skip_bits(&s->gb, 8); /* transform */
1177
if (id == AV_RL32("LJIF")){
1235
if (id == AV_RL32("LJIF")) {
1178
1236
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1179
av_log(s->avctx, AV_LOG_INFO, "Pegasus lossless jpeg header found\n");
1237
av_log(s->avctx, AV_LOG_INFO,
1238
"Pegasus lossless jpeg header found\n");
1180
1239
skip_bits(&s->gb, 16); /* version ? */
1181
1240
skip_bits(&s->gb, 16); /* unknwon always 0? */
1182
1241
skip_bits(&s->gb, 16); /* unknwon always 0? */
1183
1242
skip_bits(&s->gb, 16); /* unknwon always 0? */
1184
switch( get_bits(&s->gb, 8)){
1243
switch (get_bits(&s->gb, 8)) {
1194
1253
av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace\n");
1233
1292
static int mjpeg_decode_com(MJpegDecodeContext *s)
1235
1294
int len = get_bits(&s->gb, 16);
1236
if (len >= 2 && 8*len - 16 + get_bits_count(&s->gb) <= s->gb.size_in_bits) {
1296
8 * len - 16 + get_bits_count(&s->gb) <= s->gb.size_in_bits) {
1237
1297
char *cbuf = av_malloc(len - 1);
1240
1300
for (i = 0; i < len - 2; i++)
1241
1301
cbuf[i] = get_bits(&s->gb, 8);
1242
if (i > 0 && cbuf[i-1] == '\n')
1302
if (i > 0 && cbuf[i - 1] == '\n')
1247
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
1307
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
1248
1308
av_log(s->avctx, AV_LOG_INFO, "mjpeg comment: '%s'\n", cbuf);
1250
1310
/* buggy avid, it puts EOI only at every 10th frame */
1251
if (!strcmp(cbuf, "AVID"))
1311
if (!strcmp(cbuf, "AVID")) {
1253
1312
s->buggy_avid = 1;
1254
// if (s->first_picture)
1255
// printf("mjpeg: workarounding buggy AVID\n");
1257
else if(!strcmp(cbuf, "CS=ITU601")){
1260
else if((len > 20 && !strncmp(cbuf, "Intel(R) JPEG Library", 21)) ||
1261
(len > 19 && !strncmp(cbuf, "Metasoft MJPEG Codec", 20))){
1313
// if (s->first_picture)
1314
// printf("mjpeg: workarounding buggy AVID\n");
1315
} else if (!strcmp(cbuf, "CS=ITU601"))
1317
else if ((len > 20 && !strncmp(cbuf, "Intel(R) JPEG Library", 21)) ||
1318
(len > 19 && !strncmp(cbuf, "Metasoft MJPEG Codec", 20)))
1262
1319
s->flipped = 1;
1273
static int valid_marker_list[] =
1275
/* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f */
1276
/* 0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1277
/* 1 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1278
/* 2 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1279
/* 3 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1280
/* 4 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1281
/* 5 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1282
/* 6 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1283
/* 7 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1284
/* 8 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1285
/* 9 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1286
/* a */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1287
/* b */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1288
/* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1289
/* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1290
/* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1291
/* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0,
1295
1328
/* return the 8 bit start code value and update the search
1296
1329
state. Return -1 if no start code found */
1297
1330
static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end)
1325
1358
int ff_mjpeg_find_marker(MJpegDecodeContext *s,
1326
1359
const uint8_t **buf_ptr, const uint8_t *buf_end,
1327
const uint8_t **unescaped_buf_ptr, int *unescaped_buf_size)
1360
const uint8_t **unescaped_buf_ptr,
1361
int *unescaped_buf_size)
1329
1363
int start_code;
1330
1364
start_code = find_marker(buf_ptr, buf_end);
1332
if ((buf_end - *buf_ptr) > s->buffer_size)
1335
s->buffer_size = buf_end - *buf_ptr;
1336
s->buffer = av_malloc(s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE);
1337
av_log(s->avctx, AV_LOG_DEBUG, "buffer too small, expanding to %d bytes\n",
1341
/* unescape buffer of SOS, use special treatment for JPEG-LS */
1342
if (start_code == SOS && !s->ls)
1344
const uint8_t *src = *buf_ptr;
1345
uint8_t *dst = s->buffer;
1349
uint8_t x = *(src++);
1366
if ((buf_end - *buf_ptr) > s->buffer_size) {
1368
s->buffer_size = buf_end - *buf_ptr;
1369
s->buffer = av_malloc(s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE);
1370
av_log(s->avctx, AV_LOG_DEBUG,
1371
"buffer too small, expanding to %d bytes\n", s->buffer_size);
1374
/* unescape buffer of SOS, use special treatment for JPEG-LS */
1375
if (start_code == SOS && !s->ls) {
1376
const uint8_t *src = *buf_ptr;
1377
uint8_t *dst = s->buffer;
1379
while (src < buf_end) {
1380
uint8_t x = *(src++);
1383
if (s->avctx->codec_id != CODEC_ID_THP) {
1385
while (src < buf_end && x == 0xff)
1388
if (x >= 0xd0 && x <= 0xd7)
1352
if (s->avctx->codec_id != CODEC_ID_THP)
1355
while (src < buf_end && x == 0xff)
1358
if (x >= 0xd0 && x <= 0xd7)
1365
*unescaped_buf_ptr = s->buffer;
1366
*unescaped_buf_size = dst - s->buffer;
1368
av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %td bytes\n",
1369
(buf_end - *buf_ptr) - (dst - s->buffer));
1371
else if(start_code == SOS && s->ls){
1372
const uint8_t *src = *buf_ptr;
1373
uint8_t *dst = s->buffer;
1381
while (src + t < buf_end){
1382
uint8_t x = src[t++];
1384
while((src + t < buf_end) && x == 0xff)
1394
init_put_bits(&pb, dst, t);
1396
/* unescape bitstream */
1398
uint8_t x = src[b++];
1399
put_bits(&pb, 8, x);
1402
put_bits(&pb, 7, x);
1406
flush_put_bits(&pb);
1408
*unescaped_buf_ptr = dst;
1409
*unescaped_buf_size = (bit_count + 7) >> 3;
1413
*unescaped_buf_ptr = *buf_ptr;
1414
*unescaped_buf_size = buf_end - *buf_ptr;
1395
*unescaped_buf_ptr = s->buffer;
1396
*unescaped_buf_size = dst - s->buffer;
1398
av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %td bytes\n",
1399
(buf_end - *buf_ptr) - (dst - s->buffer));
1400
} else if (start_code == SOS && s->ls) {
1401
const uint8_t *src = *buf_ptr;
1402
uint8_t *dst = s->buffer;
1410
while (src + t < buf_end) {
1411
uint8_t x = src[t++];
1413
while ((src + t < buf_end) && x == 0xff)
1422
init_put_bits(&pb, dst, t);
1424
/* unescape bitstream */
1426
uint8_t x = src[b++];
1427
put_bits(&pb, 8, x);
1430
put_bits(&pb, 7, x);
1434
flush_put_bits(&pb);
1436
*unescaped_buf_ptr = dst;
1437
*unescaped_buf_size = (bit_count + 7) >> 3;
1439
*unescaped_buf_ptr = *buf_ptr;
1440
*unescaped_buf_size = buf_end - *buf_ptr;
1417
1443
return start_code;
1420
int ff_mjpeg_decode_frame(AVCodecContext *avctx,
1421
void *data, int *data_size,
1446
int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
1424
1449
const uint8_t *buf = avpkt->data;
1425
int buf_size = avpkt->size;
1450
int buf_size = avpkt->size;
1426
1451
MJpegDecodeContext *s = avctx->priv_data;
1427
1452
const uint8_t *buf_end, *buf_ptr;
1428
1453
const uint8_t *unescaped_buf_ptr;
1436
1461
while (buf_ptr < buf_end) {
1437
1462
/* find start next marker */
1438
1463
start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end,
1439
&unescaped_buf_ptr, &unescaped_buf_size);
1442
if (start_code < 0) {
1465
&unescaped_buf_size);
1467
if (start_code < 0) {
1470
av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n",
1471
start_code, buf_end - buf_ptr);
1473
init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size * 8);
1475
s->start_code = start_code;
1476
if (s->avctx->debug & FF_DEBUG_STARTCODE)
1477
av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
1479
/* process markers */
1480
if (start_code >= 0xd0 && start_code <= 0xd7)
1481
av_log(avctx, AV_LOG_DEBUG,
1482
"restart marker: %d\n", start_code & 0x0f);
1484
else if (start_code >= APP0 && start_code <= APP15)
1485
mjpeg_decode_app(s);
1487
else if (start_code == COM)
1488
mjpeg_decode_com(s);
1490
switch (start_code) {
1492
s->restart_interval = 0;
1493
s->restart_count = 0;
1494
/* nothing to do on SOI */
1497
ff_mjpeg_decode_dqt(s);
1500
if (ff_mjpeg_decode_dht(s) < 0) {
1501
av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
1510
if (ff_mjpeg_decode_sof(s) < 0)
1517
if (ff_mjpeg_decode_sof(s) < 0)
1524
if (ff_mjpeg_decode_sof(s) < 0)
1531
if (ff_mjpeg_decode_sof(s) < 0)
1535
if (!CONFIG_JPEGLS_DECODER || ff_jpegls_decode_lse(s) < 0)
1540
if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
1543
if (!s->got_picture) {
1544
av_log(avctx, AV_LOG_WARNING,
1545
"Found EOI before any SOF, ignoring\n");
1548
if (s->interlaced) {
1549
s->bottom_field ^= 1;
1550
/* if not bottom field, do not output image yet */
1551
if (s->bottom_field == !s->interlace_polarity)
1554
*picture = *s->picture_ptr;
1555
*data_size = sizeof(AVFrame);
1558
picture->quality = FFMAX3(s->qscale[0],
1561
picture->qstride = 0;
1562
picture->qscale_table = s->qscale_table;
1563
memset(picture->qscale_table, picture->quality,
1564
(s->width + 15) / 16);
1565
if (avctx->debug & FF_DEBUG_QP)
1566
av_log(avctx, AV_LOG_DEBUG,
1567
"QP: %d\n", picture->quality);
1568
picture->quality *= FF_QP2LAMBDA;
1445
av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n", start_code, buf_end - buf_ptr);
1447
init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size*8);
1449
s->start_code = start_code;
1450
if(s->avctx->debug & FF_DEBUG_STARTCODE){
1451
av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
1454
/* process markers */
1455
if (start_code >= 0xd0 && start_code <= 0xd7) {
1456
av_log(avctx, AV_LOG_DEBUG, "restart marker: %d\n", start_code&0x0f);
1458
} else if (start_code >= APP0 && start_code <= APP15) {
1459
mjpeg_decode_app(s);
1461
} else if (start_code == COM){
1462
mjpeg_decode_com(s);
1465
switch(start_code) {
1467
s->restart_interval = 0;
1469
s->restart_count = 0;
1470
/* nothing to do on SOI */
1473
ff_mjpeg_decode_dqt(s);
1476
if(ff_mjpeg_decode_dht(s) < 0){
1477
av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
1486
if (ff_mjpeg_decode_sof(s) < 0)
1493
if (ff_mjpeg_decode_sof(s) < 0)
1500
if (ff_mjpeg_decode_sof(s) < 0)
1507
if (ff_mjpeg_decode_sof(s) < 0)
1511
if (!CONFIG_JPEGLS_DECODER || ff_jpegls_decode_lse(s) < 0)
1516
if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
1519
if (!s->got_picture) {
1520
av_log(avctx, AV_LOG_WARNING, "Found EOI before any SOF, ignoring\n");
1524
if (s->interlaced) {
1525
s->bottom_field ^= 1;
1526
/* if not bottom field, do not output image yet */
1527
if (s->bottom_field == !s->interlace_polarity)
1530
*picture = *s->picture_ptr;
1531
*data_size = sizeof(AVFrame);
1534
picture->quality= FFMAX3(s->qscale[0], s->qscale[1], s->qscale[2]);
1535
picture->qstride= 0;
1536
picture->qscale_table= s->qscale_table;
1537
memset(picture->qscale_table, picture->quality, (s->width+15)/16);
1538
if(avctx->debug & FF_DEBUG_QP)
1539
av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality);
1540
picture->quality*= FF_QP2LAMBDA;
1547
if (!s->got_picture) {
1548
av_log(avctx, AV_LOG_WARNING, "Can not process SOS before SOF, skipping\n");
1551
ff_mjpeg_decode_sos(s, NULL, NULL);
1552
/* buggy avid puts EOI every 10-20th frame */
1553
/* if restart period is over process EOI */
1554
if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
1558
mjpeg_decode_dri(s);
1570
av_log(avctx, AV_LOG_ERROR, "mjpeg: unsupported coding type (%x)\n", start_code);
1573
// printf("mjpeg: unsupported marker (%x)\n", start_code);
1573
if (!s->got_picture) {
1574
av_log(avctx, AV_LOG_WARNING,
1575
"Can not process SOS before SOF, skipping\n");
1578
if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 &&
1579
(avctx->err_recognition & AV_EF_EXPLODE))
1580
return AVERROR_INVALIDDATA;
1581
/* buggy avid puts EOI every 10-20th frame */
1582
/* if restart period is over process EOI */
1583
if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
1587
mjpeg_decode_dri(s);
1599
av_log(avctx, AV_LOG_ERROR,
1600
"mjpeg: unsupported coding type (%x)\n", start_code);
1603
// printf("mjpeg: unsupported marker (%x)\n", start_code);
1578
/* eof process start code */
1579
buf_ptr += (get_bits_count(&s->gb)+7)/8;
1580
av_log(avctx, AV_LOG_DEBUG, "marker parser used %d bytes (%d bits)\n",
1581
(get_bits_count(&s->gb)+7)/8, get_bits_count(&s->gb));
1608
/* eof process start code */
1609
buf_ptr += (get_bits_count(&s->gb) + 7) / 8;
1610
av_log(avctx, AV_LOG_DEBUG,
1611
"marker parser used %d bytes (%d bits)\n",
1612
(get_bits_count(&s->gb) + 7) / 8, get_bits_count(&s->gb));
1585
1615
if (s->got_picture) {
1605
1636
av_free(s->buffer);
1606
1637
av_free(s->qscale_table);
1607
1638
av_freep(&s->ljpeg_buffer);
1608
s->ljpeg_buffer_size=0;
1639
s->ljpeg_buffer_size = 0;
1641
for (i = 0; i < 3; i++) {
1642
for (j = 0; j < 4; j++)
1612
1643
free_vlc(&s->vlcs[i][j]);
1614
for(i=0; i<MAX_COMPONENTS; i++) {
1645
for (i = 0; i < MAX_COMPONENTS; i++) {
1615
1646
av_freep(&s->blocks[i]);
1616
1647
av_freep(&s->last_nnz[i]);
1652
#define OFFSET(x) offsetof(MJpegDecodeContext, x)
1653
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1654
static const AVOption options[] = {
1655
{ "extern_huff", "Use external huffman table.",
1656
OFFSET(extern_huff), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD },
1660
static const AVClass mjpegdec_class = {
1661
.class_name = "MJPEG decoder",
1662
.item_name = av_default_item_name,
1664
.version = LIBAVUTIL_VERSION_INT,
1621
1667
AVCodec ff_mjpeg_decoder = {
1625
sizeof(MJpegDecodeContext),
1626
ff_mjpeg_decode_init,
1628
ff_mjpeg_decode_end,
1629
ff_mjpeg_decode_frame,
1633
.long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
1669
.type = AVMEDIA_TYPE_VIDEO,
1670
.id = CODEC_ID_MJPEG,
1671
.priv_data_size = sizeof(MJpegDecodeContext),
1672
.init = ff_mjpeg_decode_init,
1673
.close = ff_mjpeg_decode_end,
1674
.decode = ff_mjpeg_decode_frame,
1675
.capabilities = CODEC_CAP_DR1,
1677
.long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
1678
.priv_class = &mjpegdec_class,
1636
1681
AVCodec ff_thp_decoder = {
1640
sizeof(MJpegDecodeContext),
1641
ff_mjpeg_decode_init,
1643
ff_mjpeg_decode_end,
1644
ff_mjpeg_decode_frame,
1648
.long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
1683
.type = AVMEDIA_TYPE_VIDEO,
1685
.priv_data_size = sizeof(MJpegDecodeContext),
1686
.init = ff_mjpeg_decode_init,
1687
.close = ff_mjpeg_decode_end,
1688
.decode = ff_mjpeg_decode_frame,
1689
.capabilities = CODEC_CAP_DR1,
1691
.long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"),
added
removed
ffmpeg/libavcodec/mjpegdec.c
