2 * OpenEXR (.exr) image decoder
3 * Copyright (c) 2006 Industrial Light & Magic, a division of Lucas Digital Ltd. LLC
4 * Copyright (c) 2009 Jimmy Christensen
6 * B44/B44A, Tile, UINT32 added by Jokyo Images support by CNC - French National Center for Cinema
8 * This file is part of FFmpeg.
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 * @author Jimmy Christensen
30 * For more information on the OpenEXR format, visit:
33 * exr_half2float() is credited to Aaftab Munshi, Dan Ginsburg, Dave Shreiner.
39 #include "libavutil/avassert.h"
40 #include "libavutil/common.h"
41 #include "libavutil/imgutils.h"
42 #include "libavutil/intfloat.h"
43 #include "libavutil/avstring.h"
44 #include "libavutil/opt.h"
45 #include "libavutil/color_utils.h"
48 #include "bytestream.h"
81 enum ExrTileLevelMode {
83 EXR_TILE_LEVEL_MIPMAP,
84 EXR_TILE_LEVEL_RIPMAP,
85 EXR_TILE_LEVEL_UNKNOWN,
88 enum ExrTileLevelRound {
91 EXR_TILE_ROUND_UNKNOWN,
94 typedef struct HuffEntry {
100 typedef struct EXRChannel {
102 enum ExrPixelType pixel_type;
105 typedef struct EXRTileAttribute {
108 enum ExrTileLevelMode level_mode;
109 enum ExrTileLevelRound level_round;
112 typedef struct EXRThreadData {
113 uint8_t *uncompressed_data;
114 int uncompressed_size;
131 uint8_t *rle_raw_data;
132 unsigned rle_raw_size;
138 int channel_line_size;
146 typedef struct EXRContext {
149 AVCodecContext *avctx;
153 BswapDSPContext bbdsp;
156 enum ExrCompr compression;
157 enum ExrPixelType pixel_type;
158 int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
159 const AVPixFmtDescriptor *desc;
165 uint32_t xdelta, ydelta;
167 int scan_lines_per_block;
169 EXRTileAttribute tile_attr; /* header data attribute of tile */
170 int is_tile; /* 0 if scanline, 1 if tile */
174 int is_luma;/* 1 if there is an Y plane */
180 EXRChannel *channels;
182 int current_channel_offset;
183 uint32_t chunk_count;
185 EXRThreadData *thread_data;
190 enum AVColorTransferCharacteristic apply_trc_type;
192 union av_intfloat32 gamma_table[65536];
195 /* -15 stored using a single precision bias of 127 */
196 #define HALF_FLOAT_MIN_BIASED_EXP_AS_SINGLE_FP_EXP 0x38000000
198 /* max exponent value in single precision that will be converted
199 * to Inf or Nan when stored as a half-float */
200 #define HALF_FLOAT_MAX_BIASED_EXP_AS_SINGLE_FP_EXP 0x47800000
202 /* 255 is the max exponent biased value */
203 #define FLOAT_MAX_BIASED_EXP (0xFF << 23)
205 #define HALF_FLOAT_MAX_BIASED_EXP (0x1F << 10)
208 * Convert a half float as a uint16_t into a full float.
210 * @param hf half float as uint16_t
212 * @return float value
214 static union av_intfloat32 exr_half2float(uint16_t hf)
216 unsigned int sign = (unsigned int) (hf >> 15);
217 unsigned int mantissa = (unsigned int) (hf & ((1 << 10) - 1));
218 unsigned int exp = (unsigned int) (hf & HALF_FLOAT_MAX_BIASED_EXP);
219 union av_intfloat32 f;
221 if (exp == HALF_FLOAT_MAX_BIASED_EXP) {
222 // we have a half-float NaN or Inf
223 // half-float NaNs will be converted to a single precision NaN
224 // half-float Infs will be converted to a single precision Inf
225 exp = FLOAT_MAX_BIASED_EXP;
226 mantissa <<= 13; // preserve half-float NaN bits if set
227 } else if (exp == 0x0) {
228 // convert half-float zero/denorm to single precision value
231 exp = HALF_FLOAT_MIN_BIASED_EXP_AS_SINGLE_FP_EXP;
232 // check for leading 1 in denorm mantissa
233 while (!(mantissa & (1 << 10))) {
234 // for every leading 0, decrement single precision exponent by 1
235 // and shift half-float mantissa value to the left
239 // clamp the mantissa to 10 bits
240 mantissa &= ((1 << 10) - 1);
241 // shift left to generate single-precision mantissa of 23 bits
245 // shift left to generate single-precision mantissa of 23 bits
247 // generate single precision biased exponent value
248 exp = (exp << 13) + HALF_FLOAT_MIN_BIASED_EXP_AS_SINGLE_FP_EXP;
251 f.i = (sign << 31) | exp | mantissa;
256 static int zip_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
257 int uncompressed_size, EXRThreadData *td)
259 unsigned long dest_len = uncompressed_size;
261 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
262 dest_len != uncompressed_size)
263 return AVERROR_INVALIDDATA;
265 av_assert1(uncompressed_size % 2 == 0);
267 s->dsp.predictor(td->tmp, uncompressed_size);
268 s->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
273 static int rle(uint8_t *dst, const uint8_t *src,
274 int compressed_size, int uncompressed_size)
277 const int8_t *s = src;
278 int ssize = compressed_size;
279 int dsize = uncompressed_size;
280 uint8_t *dend = d + dsize;
289 if ((dsize -= count) < 0 ||
290 (ssize -= count + 1) < 0)
291 return AVERROR_INVALIDDATA;
298 if ((dsize -= count) < 0 ||
300 return AVERROR_INVALIDDATA;
310 return AVERROR_INVALIDDATA;
315 static int rle_uncompress(EXRContext *ctx, const uint8_t *src, int compressed_size,
316 int uncompressed_size, EXRThreadData *td)
318 rle(td->tmp, src, compressed_size, uncompressed_size);
320 av_assert1(uncompressed_size % 2 == 0);
322 ctx->dsp.predictor(td->tmp, uncompressed_size);
323 ctx->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
328 #define USHORT_RANGE (1 << 16)
329 #define BITMAP_SIZE (1 << 13)
331 static uint16_t reverse_lut(const uint8_t *bitmap, uint16_t *lut)
335 for (i = 0; i < USHORT_RANGE; i++)
336 if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
341 memset(lut + k, 0, (USHORT_RANGE - k) * 2);
346 static void apply_lut(const uint16_t *lut, uint16_t *dst, int dsize)
350 for (i = 0; i < dsize; ++i)
351 dst[i] = lut[dst[i]];
354 #define HUF_ENCBITS 16 // literal (value) bit length
355 #define HUF_ENCSIZE ((1 << HUF_ENCBITS) + 1) // encoding table size
357 static void huf_canonical_code_table(uint64_t *freq)
359 uint64_t c, n[59] = { 0 };
362 for (i = 0; i < HUF_ENCSIZE; i++)
366 for (i = 58; i > 0; --i) {
367 uint64_t nc = ((c + n[i]) >> 1);
372 for (i = 0; i < HUF_ENCSIZE; ++i) {
376 freq[i] = l | (n[l]++ << 6);
380 #define SHORT_ZEROCODE_RUN 59
381 #define LONG_ZEROCODE_RUN 63
382 #define SHORTEST_LONG_RUN (2 + LONG_ZEROCODE_RUN - SHORT_ZEROCODE_RUN)
383 #define LONGEST_LONG_RUN (255 + SHORTEST_LONG_RUN)
385 static int huf_unpack_enc_table(GetByteContext *gb,
386 int32_t im, int32_t iM, uint64_t *freq)
389 int ret = init_get_bits8(&gbit, gb->buffer, bytestream2_get_bytes_left(gb));
393 for (; im <= iM; im++) {
394 uint64_t l = freq[im] = get_bits(&gbit, 6);
396 if (l == LONG_ZEROCODE_RUN) {
397 int zerun = get_bits(&gbit, 8) + SHORTEST_LONG_RUN;
399 if (im + zerun > iM + 1)
400 return AVERROR_INVALIDDATA;
406 } else if (l >= SHORT_ZEROCODE_RUN) {
407 int zerun = l - SHORT_ZEROCODE_RUN + 2;
409 if (im + zerun > iM + 1)
410 return AVERROR_INVALIDDATA;
419 bytestream2_skip(gb, (get_bits_count(&gbit) + 7) / 8);
420 huf_canonical_code_table(freq);
425 static int huf_build_dec_table(EXRContext *s,
426 EXRThreadData *td, int im, int iM)
431 for (int i = im; i < iM; i++) {
433 td->he[j].len = td->freq[i] & 63;
434 td->he[j].code = td->freq[i] >> 6;
435 if (td->he[j].len > 32) {
436 avpriv_request_sample(s->avctx, "Too big code length");
437 return AVERROR_PATCHWELCOME;
439 if (td->he[j].len > 0)
450 if (td->run_sym == -1) {
451 avpriv_request_sample(s->avctx, "No place for run symbol");
452 return AVERROR_PATCHWELCOME;
455 td->he[j].sym = td->run_sym;
456 td->he[j].len = td->freq[iM] & 63;
457 if (td->he[j].len > 32) {
458 avpriv_request_sample(s->avctx, "Too big code length");
459 return AVERROR_PATCHWELCOME;
461 td->he[j].code = td->freq[iM] >> 6;
464 ff_free_vlc(&td->vlc);
465 return ff_init_vlc_sparse(&td->vlc, 12, j,
466 &td->he[0].len, sizeof(td->he[0]), sizeof(td->he[0].len),
467 &td->he[0].code, sizeof(td->he[0]), sizeof(td->he[0].code),
468 &td->he[0].sym, sizeof(td->he[0]), sizeof(td->he[0].sym), 0);
471 static int huf_decode(VLC *vlc, GetByteContext *gb, int nbits, int run_sym,
472 int no, uint16_t *out)
477 init_get_bits(&gbit, gb->buffer, nbits);
478 while (get_bits_left(&gbit) > 0 && oe < no) {
479 uint16_t x = get_vlc2(&gbit, vlc->table, 12, 2);
482 int run = get_bits(&gbit, 8);
483 uint16_t fill = out[oe - 1];
495 static int huf_uncompress(EXRContext *s,
498 uint16_t *dst, int dst_size)
504 im = bytestream2_get_le32(gb);
505 iM = bytestream2_get_le32(gb);
506 bytestream2_skip(gb, 4);
507 nBits = bytestream2_get_le32(gb);
508 if (im < 0 || im >= HUF_ENCSIZE ||
509 iM < 0 || iM >= HUF_ENCSIZE)
510 return AVERROR_INVALIDDATA;
512 bytestream2_skip(gb, 4);
515 td->freq = av_malloc_array(HUF_ENCSIZE, sizeof(*td->freq));
517 td->he = av_calloc(HUF_ENCSIZE, sizeof(*td->he));
518 if (!td->freq || !td->he) {
519 ret = AVERROR(ENOMEM);
523 memset(td->freq, 0, sizeof(*td->freq) * HUF_ENCSIZE);
524 if ((ret = huf_unpack_enc_table(gb, im, iM, td->freq)) < 0)
527 if (nBits > 8 * bytestream2_get_bytes_left(gb)) {
528 ret = AVERROR_INVALIDDATA;
532 if ((ret = huf_build_dec_table(s, td, im, iM)) < 0)
534 return huf_decode(&td->vlc, gb, nBits, td->run_sym, dst_size, dst);
537 static inline void wdec14(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
542 int ai = ls + (hi & 1) + (hi >> 1);
544 int16_t bs = ai - hi;
551 #define A_OFFSET (1 << (NBITS - 1))
552 #define MOD_MASK ((1 << NBITS) - 1)
554 static inline void wdec16(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
558 int bb = (m - (d >> 1)) & MOD_MASK;
559 int aa = (d + bb - A_OFFSET) & MOD_MASK;
564 static void wav_decode(uint16_t *in, int nx, int ox,
565 int ny, int oy, uint16_t mx)
567 int w14 = (mx < (1 << 14));
568 int n = (nx > ny) ? ny : nx;
581 uint16_t *ey = in + oy * (ny - p2);
582 uint16_t i00, i01, i10, i11;
588 for (; py <= ey; py += oy2) {
590 uint16_t *ex = py + ox * (nx - p2);
592 for (; px <= ex; px += ox2) {
593 uint16_t *p01 = px + ox1;
594 uint16_t *p10 = px + oy1;
595 uint16_t *p11 = p10 + ox1;
598 wdec14(*px, *p10, &i00, &i10);
599 wdec14(*p01, *p11, &i01, &i11);
600 wdec14(i00, i01, px, p01);
601 wdec14(i10, i11, p10, p11);
603 wdec16(*px, *p10, &i00, &i10);
604 wdec16(*p01, *p11, &i01, &i11);
605 wdec16(i00, i01, px, p01);
606 wdec16(i10, i11, p10, p11);
611 uint16_t *p10 = px + oy1;
614 wdec14(*px, *p10, &i00, p10);
616 wdec16(*px, *p10, &i00, p10);
624 uint16_t *ex = py + ox * (nx - p2);
626 for (; px <= ex; px += ox2) {
627 uint16_t *p01 = px + ox1;
630 wdec14(*px, *p01, &i00, p01);
632 wdec16(*px, *p01, &i00, p01);
643 static int piz_uncompress(EXRContext *s, const uint8_t *src, int ssize,
644 int dsize, EXRThreadData *td)
647 uint16_t maxval, min_non_zero, max_non_zero;
649 uint16_t *tmp = (uint16_t *)td->tmp;
653 int pixel_half_size;/* 1 for half, 2 for float and uint32 */
658 td->bitmap = av_malloc(BITMAP_SIZE);
660 td->lut = av_malloc(1 << 17);
661 if (!td->bitmap || !td->lut) {
662 av_freep(&td->bitmap);
664 return AVERROR(ENOMEM);
667 bytestream2_init(&gb, src, ssize);
668 min_non_zero = bytestream2_get_le16(&gb);
669 max_non_zero = bytestream2_get_le16(&gb);
671 if (max_non_zero >= BITMAP_SIZE)
672 return AVERROR_INVALIDDATA;
674 memset(td->bitmap, 0, FFMIN(min_non_zero, BITMAP_SIZE));
675 if (min_non_zero <= max_non_zero)
676 bytestream2_get_buffer(&gb, td->bitmap + min_non_zero,
677 max_non_zero - min_non_zero + 1);
678 memset(td->bitmap + max_non_zero + 1, 0, BITMAP_SIZE - max_non_zero - 1);
680 maxval = reverse_lut(td->bitmap, td->lut);
682 bytestream2_skip(&gb, 4);
683 ret = huf_uncompress(s, td, &gb, tmp, dsize / sizeof(uint16_t));
688 for (i = 0; i < s->nb_channels; i++) {
689 channel = &s->channels[i];
691 if (channel->pixel_type == EXR_HALF)
696 for (j = 0; j < pixel_half_size; j++)
697 wav_decode(ptr + j, td->xsize, pixel_half_size, td->ysize,
698 td->xsize * pixel_half_size, maxval);
699 ptr += td->xsize * td->ysize * pixel_half_size;
702 apply_lut(td->lut, tmp, dsize / sizeof(uint16_t));
704 out = (uint16_t *)td->uncompressed_data;
705 for (i = 0; i < td->ysize; i++) {
707 for (j = 0; j < s->nb_channels; j++) {
708 channel = &s->channels[j];
709 if (channel->pixel_type == EXR_HALF)
714 in = tmp + tmp_offset * td->xsize * td->ysize + i * td->xsize * pixel_half_size;
715 tmp_offset += pixel_half_size;
718 s->bbdsp.bswap16_buf(out, in, td->xsize * pixel_half_size);
720 memcpy(out, in, td->xsize * 2 * pixel_half_size);
722 out += td->xsize * pixel_half_size;
729 static int pxr24_uncompress(EXRContext *s, const uint8_t *src,
730 int compressed_size, int uncompressed_size,
733 unsigned long dest_len, expected_len = 0;
734 const uint8_t *in = td->tmp;
738 for (i = 0; i < s->nb_channels; i++) {
739 if (s->channels[i].pixel_type == EXR_FLOAT) {
740 expected_len += (td->xsize * td->ysize * 3);/* PRX 24 store float in 24 bit instead of 32 */
741 } else if (s->channels[i].pixel_type == EXR_HALF) {
742 expected_len += (td->xsize * td->ysize * 2);
744 expected_len += (td->xsize * td->ysize * 4);
748 dest_len = expected_len;
750 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK) {
751 return AVERROR_INVALIDDATA;
752 } else if (dest_len != expected_len) {
753 return AVERROR_INVALIDDATA;
756 out = td->uncompressed_data;
757 for (i = 0; i < td->ysize; i++)
758 for (c = 0; c < s->nb_channels; c++) {
759 EXRChannel *channel = &s->channels[c];
760 const uint8_t *ptr[4];
763 switch (channel->pixel_type) {
766 ptr[1] = ptr[0] + td->xsize;
767 ptr[2] = ptr[1] + td->xsize;
768 in = ptr[2] + td->xsize;
770 for (j = 0; j < td->xsize; ++j) {
771 uint32_t diff = ((unsigned)*(ptr[0]++) << 24) |
772 (*(ptr[1]++) << 16) |
775 bytestream_put_le32(&out, pixel);
780 ptr[1] = ptr[0] + td->xsize;
781 in = ptr[1] + td->xsize;
782 for (j = 0; j < td->xsize; j++) {
783 uint32_t diff = (*(ptr[0]++) << 8) | *(ptr[1]++);
786 bytestream_put_le16(&out, pixel);
791 ptr[1] = ptr[0] + s->xdelta;
792 ptr[2] = ptr[1] + s->xdelta;
793 ptr[3] = ptr[2] + s->xdelta;
794 in = ptr[3] + s->xdelta;
796 for (j = 0; j < s->xdelta; ++j) {
797 uint32_t diff = ((uint32_t)*(ptr[0]++) << 24) |
798 (*(ptr[1]++) << 16) |
799 (*(ptr[2]++) << 8 ) |
802 bytestream_put_le32(&out, pixel);
806 return AVERROR_INVALIDDATA;
813 static void unpack_14(const uint8_t b[14], uint16_t s[16])
815 unsigned short shift = (b[ 2] >> 2) & 15;
816 unsigned short bias = (0x20 << shift);
819 s[ 0] = (b[0] << 8) | b[1];
821 s[ 4] = s[ 0] + ((((b[ 2] << 4) | (b[ 3] >> 4)) & 0x3f) << shift) - bias;
822 s[ 8] = s[ 4] + ((((b[ 3] << 2) | (b[ 4] >> 6)) & 0x3f) << shift) - bias;
823 s[12] = s[ 8] + ((b[ 4] & 0x3f) << shift) - bias;
825 s[ 1] = s[ 0] + ((b[ 5] >> 2) << shift) - bias;
826 s[ 5] = s[ 4] + ((((b[ 5] << 4) | (b[ 6] >> 4)) & 0x3f) << shift) - bias;
827 s[ 9] = s[ 8] + ((((b[ 6] << 2) | (b[ 7] >> 6)) & 0x3f) << shift) - bias;
828 s[13] = s[12] + ((b[ 7] & 0x3f) << shift) - bias;
830 s[ 2] = s[ 1] + ((b[ 8] >> 2) << shift) - bias;
831 s[ 6] = s[ 5] + ((((b[ 8] << 4) | (b[ 9] >> 4)) & 0x3f) << shift) - bias;
832 s[10] = s[ 9] + ((((b[ 9] << 2) | (b[10] >> 6)) & 0x3f) << shift) - bias;
833 s[14] = s[13] + ((b[10] & 0x3f) << shift) - bias;
835 s[ 3] = s[ 2] + ((b[11] >> 2) << shift) - bias;
836 s[ 7] = s[ 6] + ((((b[11] << 4) | (b[12] >> 4)) & 0x3f) << shift) - bias;
837 s[11] = s[10] + ((((b[12] << 2) | (b[13] >> 6)) & 0x3f) << shift) - bias;
838 s[15] = s[14] + ((b[13] & 0x3f) << shift) - bias;
840 for (i = 0; i < 16; ++i) {
848 static void unpack_3(const uint8_t b[3], uint16_t s[16])
852 s[0] = (b[0] << 8) | b[1];
859 for (i = 1; i < 16; i++)
864 static int b44_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
865 int uncompressed_size, EXRThreadData *td) {
866 const int8_t *sr = src;
867 int stay_to_uncompress = compressed_size;
868 int nb_b44_block_w, nb_b44_block_h;
869 int index_tl_x, index_tl_y, index_out, index_tmp;
870 uint16_t tmp_buffer[16]; /* B44 use 4x4 half float pixel */
872 int target_channel_offset = 0;
874 /* calc B44 block count */
875 nb_b44_block_w = td->xsize / 4;
876 if ((td->xsize % 4) != 0)
879 nb_b44_block_h = td->ysize / 4;
880 if ((td->ysize % 4) != 0)
883 for (c = 0; c < s->nb_channels; c++) {
884 if (s->channels[c].pixel_type == EXR_HALF) {/* B44 only compress half float data */
885 for (iY = 0; iY < nb_b44_block_h; iY++) {
886 for (iX = 0; iX < nb_b44_block_w; iX++) {/* For each B44 block */
887 if (stay_to_uncompress < 3) {
888 av_log(s, AV_LOG_ERROR, "Not enough data for B44A block: %d", stay_to_uncompress);
889 return AVERROR_INVALIDDATA;
892 if (src[compressed_size - stay_to_uncompress + 2] == 0xfc) { /* B44A block */
893 unpack_3(sr, tmp_buffer);
895 stay_to_uncompress -= 3;
896 } else {/* B44 Block */
897 if (stay_to_uncompress < 14) {
898 av_log(s, AV_LOG_ERROR, "Not enough data for B44 block: %d", stay_to_uncompress);
899 return AVERROR_INVALIDDATA;
901 unpack_14(sr, tmp_buffer);
903 stay_to_uncompress -= 14;
906 /* copy data to uncompress buffer (B44 block can exceed target resolution)*/
910 for (y = index_tl_y; y < FFMIN(index_tl_y + 4, td->ysize); y++) {
911 for (x = index_tl_x; x < FFMIN(index_tl_x + 4, td->xsize); x++) {
912 index_out = target_channel_offset * td->xsize + y * td->channel_line_size + 2 * x;
913 index_tmp = (y-index_tl_y) * 4 + (x-index_tl_x);
914 td->uncompressed_data[index_out] = tmp_buffer[index_tmp] & 0xff;
915 td->uncompressed_data[index_out + 1] = tmp_buffer[index_tmp] >> 8;
920 target_channel_offset += 2;
921 } else {/* Float or UINT 32 channel */
922 if (stay_to_uncompress < td->ysize * td->xsize * 4) {
923 av_log(s, AV_LOG_ERROR, "Not enough data for uncompress channel: %d", stay_to_uncompress);
924 return AVERROR_INVALIDDATA;
927 for (y = 0; y < td->ysize; y++) {
928 index_out = target_channel_offset * td->xsize + y * td->channel_line_size;
929 memcpy(&td->uncompressed_data[index_out], sr, td->xsize * 4);
932 target_channel_offset += 4;
934 stay_to_uncompress -= td->ysize * td->xsize * 4;
941 static int ac_uncompress(EXRContext *s, GetByteContext *gb, float *block)
946 uint16_t val = bytestream2_get_ne16(gb);
950 } else if ((val >> 8) == 0xff) {
954 block[ff_zigzag_direct[n]] = exr_half2float(val).f;
962 static void idct_1d(float *blk, int step)
964 const float a = .5f * cosf( M_PI / 4.f);
965 const float b = .5f * cosf( M_PI / 16.f);
966 const float c = .5f * cosf( M_PI / 8.f);
967 const float d = .5f * cosf(3.f*M_PI / 16.f);
968 const float e = .5f * cosf(5.f*M_PI / 16.f);
969 const float f = .5f * cosf(3.f*M_PI / 8.f);
970 const float g = .5f * cosf(7.f*M_PI / 16.f);
972 float alpha[4], beta[4], theta[4], gamma[4];
974 alpha[0] = c * blk[2 * step];
975 alpha[1] = f * blk[2 * step];
976 alpha[2] = c * blk[6 * step];
977 alpha[3] = f * blk[6 * step];
979 beta[0] = b * blk[1 * step] + d * blk[3 * step] + e * blk[5 * step] + g * blk[7 * step];
980 beta[1] = d * blk[1 * step] - g * blk[3 * step] - b * blk[5 * step] - e * blk[7 * step];
981 beta[2] = e * blk[1 * step] - b * blk[3 * step] + g * blk[5 * step] + d * blk[7 * step];
982 beta[3] = g * blk[1 * step] - e * blk[3 * step] + d * blk[5 * step] - b * blk[7 * step];
984 theta[0] = a * (blk[0 * step] + blk[4 * step]);
985 theta[3] = a * (blk[0 * step] - blk[4 * step]);
987 theta[1] = alpha[0] + alpha[3];
988 theta[2] = alpha[1] - alpha[2];
990 gamma[0] = theta[0] + theta[1];
991 gamma[1] = theta[3] + theta[2];
992 gamma[2] = theta[3] - theta[2];
993 gamma[3] = theta[0] - theta[1];
995 blk[0 * step] = gamma[0] + beta[0];
996 blk[1 * step] = gamma[1] + beta[1];
997 blk[2 * step] = gamma[2] + beta[2];
998 blk[3 * step] = gamma[3] + beta[3];
1000 blk[4 * step] = gamma[3] - beta[3];
1001 blk[5 * step] = gamma[2] - beta[2];
1002 blk[6 * step] = gamma[1] - beta[1];
1003 blk[7 * step] = gamma[0] - beta[0];
1006 static void dct_inverse(float *block)
1008 for (int i = 0; i < 8; i++)
1009 idct_1d(block + i, 8);
1011 for (int i = 0; i < 8; i++) {
1017 static void convert(float y, float u, float v,
1018 float *b, float *g, float *r)
1020 *r = y + 1.5747f * v;
1021 *g = y - 0.1873f * u - 0.4682f * v;
1022 *b = y + 1.8556f * u;
1025 static float to_linear(float x, float scale)
1027 float ax = fabsf(x);
1030 return FFSIGN(x) * powf(ax, 2.2f * scale);
1032 const float log_base = expf(2.2f * scale);
1034 return FFSIGN(x) * powf(log_base, ax - 1.f);
1038 static int dwa_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
1039 int uncompressed_size, EXRThreadData *td)
1041 int64_t version, lo_usize, lo_size;
1042 int64_t ac_size, dc_size, rle_usize, rle_csize, rle_raw_size;
1043 int64_t ac_count, dc_count, ac_compression;
1044 const int dc_w = td->xsize >> 3;
1045 const int dc_h = td->ysize >> 3;
1046 GetByteContext gb, agb;
1049 if (compressed_size <= 88)
1050 return AVERROR_INVALIDDATA;
1052 version = AV_RL64(src + 0);
1054 return AVERROR_INVALIDDATA;
1056 lo_usize = AV_RL64(src + 8);
1057 lo_size = AV_RL64(src + 16);
1058 ac_size = AV_RL64(src + 24);
1059 dc_size = AV_RL64(src + 32);
1060 rle_csize = AV_RL64(src + 40);
1061 rle_usize = AV_RL64(src + 48);
1062 rle_raw_size = AV_RL64(src + 56);
1063 ac_count = AV_RL64(src + 64);
1064 dc_count = AV_RL64(src + 72);
1065 ac_compression = AV_RL64(src + 80);
1067 if (compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize)
1068 return AVERROR_INVALIDDATA;
1070 bytestream2_init(&gb, src + 88, compressed_size - 88);
1071 skip = bytestream2_get_le16(&gb);
1073 return AVERROR_INVALIDDATA;
1075 bytestream2_skip(&gb, skip - 2);
1078 if (lo_usize > uncompressed_size)
1079 return AVERROR_INVALIDDATA;
1080 bytestream2_skip(&gb, lo_size);
1084 unsigned long dest_len = ac_count * 2LL;
1085 GetByteContext agb = gb;
1087 if (ac_count > 3LL * td->xsize * s->scan_lines_per_block)
1088 return AVERROR_INVALIDDATA;
1090 av_fast_padded_malloc(&td->ac_data, &td->ac_size, dest_len);
1092 return AVERROR(ENOMEM);
1094 switch (ac_compression) {
1096 ret = huf_uncompress(s, td, &agb, (int16_t *)td->ac_data, ac_count);
1101 if (uncompress(td->ac_data, &dest_len, agb.buffer, ac_size) != Z_OK ||
1102 dest_len != ac_count * 2LL)
1103 return AVERROR_INVALIDDATA;
1106 return AVERROR_INVALIDDATA;
1109 bytestream2_skip(&gb, ac_size);
1113 unsigned long dest_len = dc_count * 2LL;
1114 GetByteContext agb = gb;
1116 if (dc_count > (6LL * td->xsize * td->ysize + 63) / 64)
1117 return AVERROR_INVALIDDATA;
1119 av_fast_padded_malloc(&td->dc_data, &td->dc_size, FFALIGN(dest_len, 64) * 2);
1121 return AVERROR(ENOMEM);
1123 if (uncompress(td->dc_data + FFALIGN(dest_len, 64), &dest_len, agb.buffer, dc_size) != Z_OK ||
1124 (dest_len != dc_count * 2LL))
1125 return AVERROR_INVALIDDATA;
1127 s->dsp.predictor(td->dc_data + FFALIGN(dest_len, 64), dest_len);
1128 s->dsp.reorder_pixels(td->dc_data, td->dc_data + FFALIGN(dest_len, 64), dest_len);
1130 bytestream2_skip(&gb, dc_size);
1133 if (rle_raw_size > 0 && rle_csize > 0 && rle_usize > 0) {
1134 unsigned long dest_len = rle_usize;
1136 av_fast_padded_malloc(&td->rle_data, &td->rle_size, rle_usize);
1138 return AVERROR(ENOMEM);
1140 av_fast_padded_malloc(&td->rle_raw_data, &td->rle_raw_size, rle_raw_size);
1141 if (!td->rle_raw_data)
1142 return AVERROR(ENOMEM);
1144 if (uncompress(td->rle_data, &dest_len, gb.buffer, rle_csize) != Z_OK ||
1145 (dest_len != rle_usize))
1146 return AVERROR_INVALIDDATA;
1148 ret = rle(td->rle_raw_data, td->rle_data, rle_usize, rle_raw_size);
1151 bytestream2_skip(&gb, rle_csize);
1154 bytestream2_init(&agb, td->ac_data, ac_count * 2);
1156 for (int y = 0; y < td->ysize; y += 8) {
1157 for (int x = 0; x < td->xsize; x += 8) {
1158 memset(td->block, 0, sizeof(td->block));
1160 for (int j = 0; j < 3; j++) {
1161 float *block = td->block[j];
1162 const int idx = (x >> 3) + (y >> 3) * dc_w + dc_w * dc_h * j;
1163 uint16_t *dc = (uint16_t *)td->dc_data;
1164 float dc_val = dc[idx];
1166 dc_val = exr_half2float(dc_val).f;
1168 ac_uncompress(s, &agb, block);
1173 const float scale = s->pixel_type == EXR_FLOAT ? 2.f : 1.f;
1174 const int o = s->nb_channels == 4;
1175 float *bo = ((float *)td->uncompressed_data) +
1176 y * td->xsize * s->nb_channels + td->xsize * (o + 0) + x;
1177 float *go = ((float *)td->uncompressed_data) +
1178 y * td->xsize * s->nb_channels + td->xsize * (o + 1) + x;
1179 float *ro = ((float *)td->uncompressed_data) +
1180 y * td->xsize * s->nb_channels + td->xsize * (o + 2) + x;
1181 float *yb = td->block[0];
1182 float *ub = td->block[1];
1183 float *vb = td->block[2];
1185 for (int yy = 0; yy < 8; yy++) {
1186 for (int xx = 0; xx < 8; xx++) {
1187 const int idx = xx + yy * 8;
1189 convert(yb[idx], ub[idx], vb[idx], &bo[xx], &go[xx], &ro[xx]);
1191 bo[xx] = to_linear(bo[xx], scale);
1192 go[xx] = to_linear(go[xx], scale);
1193 ro[xx] = to_linear(ro[xx], scale);
1196 bo += td->xsize * s->nb_channels;
1197 go += td->xsize * s->nb_channels;
1198 ro += td->xsize * s->nb_channels;
1204 if (s->nb_channels < 4)
1207 for (int y = 0; y < td->ysize && td->rle_raw_data; y++) {
1208 uint32_t *ao = ((uint32_t *)td->uncompressed_data) + y * td->xsize * s->nb_channels;
1209 uint8_t *ai0 = td->rle_raw_data + y * td->xsize;
1210 uint8_t *ai1 = td->rle_raw_data + y * td->xsize + rle_raw_size / 2;
1212 for (int x = 0; x < td->xsize; x++)
1213 ao[x] = exr_half2float(ai0[x] | (ai1[x] << 8)).i;
1219 static int decode_block(AVCodecContext *avctx, void *tdata,
1220 int jobnr, int threadnr)
1222 EXRContext *s = avctx->priv_data;
1223 AVFrame *const p = s->picture;
1224 EXRThreadData *td = &s->thread_data[threadnr];
1225 const uint8_t *channel_buffer[4] = { 0 };
1226 const uint8_t *buf = s->buf;
1227 uint64_t line_offset, uncompressed_size;
1231 uint64_t tile_x, tile_y, tile_level_x, tile_level_y;
1233 int step = s->desc->flags & AV_PIX_FMT_FLAG_FLOAT ? 4 : 2 * s->desc->nb_components;
1234 int bxmin = 0, axmax = 0, window_xoffset = 0;
1235 int window_xmin, window_xmax, window_ymin, window_ymax;
1236 int data_xoffset, data_yoffset, data_window_offset, xsize, ysize;
1237 int i, x, buf_size = s->buf_size;
1238 int c, rgb_channel_count;
1239 float one_gamma = 1.0f / s->gamma;
1240 avpriv_trc_function trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
1243 line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
1246 if (buf_size < 20 || line_offset > buf_size - 20)
1247 return AVERROR_INVALIDDATA;
1249 src = buf + line_offset + 20;
1250 if (s->is_multipart)
1253 tile_x = AV_RL32(src - 20);
1254 tile_y = AV_RL32(src - 16);
1255 tile_level_x = AV_RL32(src - 12);
1256 tile_level_y = AV_RL32(src - 8);
1258 data_size = AV_RL32(src - 4);
1259 if (data_size <= 0 || data_size > buf_size - line_offset - 20)
1260 return AVERROR_INVALIDDATA;
1262 if (tile_level_x || tile_level_y) { /* tile level, is not the full res level */
1263 avpriv_report_missing_feature(s->avctx, "Subres tile before full res tile");
1264 return AVERROR_PATCHWELCOME;
1267 line = s->ymin + s->tile_attr.ySize * tile_y;
1268 col = s->tile_attr.xSize * tile_x;
1270 if (line < s->ymin || line > s->ymax ||
1271 s->xmin + col < s->xmin || s->xmin + col > s->xmax)
1272 return AVERROR_INVALIDDATA;
1274 td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize);
1275 td->xsize = FFMIN(s->tile_attr.xSize, s->xdelta - tile_x * s->tile_attr.xSize);
1277 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX)
1278 return AVERROR_INVALIDDATA;
1280 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1281 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1283 if (buf_size < 8 || line_offset > buf_size - 8)
1284 return AVERROR_INVALIDDATA;
1286 src = buf + line_offset + 8;
1287 if (s->is_multipart)
1289 line = AV_RL32(src - 8);
1291 if (line < s->ymin || line > s->ymax)
1292 return AVERROR_INVALIDDATA;
1294 data_size = AV_RL32(src - 4);
1295 if (data_size <= 0 || data_size > buf_size - line_offset - 8)
1296 return AVERROR_INVALIDDATA;
1298 td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */
1299 td->xsize = s->xdelta;
1301 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX)
1302 return AVERROR_INVALIDDATA;
1304 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1305 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1307 if ((s->compression == EXR_RAW && (data_size != uncompressed_size ||
1308 line_offset > buf_size - uncompressed_size)) ||
1309 (s->compression != EXR_RAW && (data_size > uncompressed_size ||
1310 line_offset > buf_size - data_size))) {
1311 return AVERROR_INVALIDDATA;
1315 window_xmin = FFMIN(avctx->width, FFMAX(0, s->xmin + col));
1316 window_xmax = FFMIN(avctx->width, FFMAX(0, s->xmin + col + td->xsize));
1317 window_ymin = FFMIN(avctx->height, FFMAX(0, line ));
1318 window_ymax = FFMIN(avctx->height, FFMAX(0, line + td->ysize));
1319 xsize = window_xmax - window_xmin;
1320 ysize = window_ymax - window_ymin;
1322 /* tile or scanline not visible skip decoding */
1323 if (xsize <= 0 || ysize <= 0)
1326 /* is the first tile or is a scanline */
1329 /* pixels to add at the left of the display window */
1330 window_xoffset = FFMAX(0, s->xmin);
1331 /* bytes to add at the left of the display window */
1332 bxmin = window_xoffset * step;
1335 /* is the last tile or is a scanline */
1336 if(col + td->xsize == s->xdelta) {
1337 window_xmax = avctx->width;
1338 /* bytes to add at the right of the display window */
1339 axmax = FFMAX(0, (avctx->width - (s->xmax + 1))) * step;
1342 if (data_size < uncompressed_size || s->is_tile) { /* td->tmp is use for tile reorganization */
1343 av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
1345 return AVERROR(ENOMEM);
1348 if (data_size < uncompressed_size) {
1349 av_fast_padded_malloc(&td->uncompressed_data,
1350 &td->uncompressed_size, uncompressed_size + 64);/* Force 64 padding for AVX2 reorder_pixels dst */
1352 if (!td->uncompressed_data)
1353 return AVERROR(ENOMEM);
1355 ret = AVERROR_INVALIDDATA;
1356 switch (s->compression) {
1359 ret = zip_uncompress(s, src, data_size, uncompressed_size, td);
1362 ret = piz_uncompress(s, src, data_size, uncompressed_size, td);
1365 ret = pxr24_uncompress(s, src, data_size, uncompressed_size, td);
1368 ret = rle_uncompress(s, src, data_size, uncompressed_size, td);
1372 ret = b44_uncompress(s, src, data_size, uncompressed_size, td);
1376 ret = dwa_uncompress(s, src, data_size, uncompressed_size, td);
1380 av_log(avctx, AV_LOG_ERROR, "decode_block() failed.\n");
1383 src = td->uncompressed_data;
1386 /* offsets to crop data outside display window */
1387 data_xoffset = FFABS(FFMIN(0, s->xmin + col)) * (s->pixel_type == EXR_HALF ? 2 : 4);
1388 data_yoffset = FFABS(FFMIN(0, line));
1389 data_window_offset = (data_yoffset * td->channel_line_size) + data_xoffset;
1392 channel_buffer[0] = src + (td->xsize * s->channel_offsets[0]) + data_window_offset;
1393 channel_buffer[1] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1394 channel_buffer[2] = src + (td->xsize * s->channel_offsets[2]) + data_window_offset;
1395 rgb_channel_count = 3;
1396 } else { /* put y data in the first channel_buffer */
1397 channel_buffer[0] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1398 rgb_channel_count = 1;
1400 if (s->channel_offsets[3] >= 0)
1401 channel_buffer[3] = src + (td->xsize * s->channel_offsets[3]) + data_window_offset;
1403 if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
1404 /* todo: change this when a floating point pixel format with luma with alpha is implemented */
1405 int channel_count = s->channel_offsets[3] >= 0 ? 4 : rgb_channel_count;
1407 channel_buffer[1] = channel_buffer[0];
1408 channel_buffer[2] = channel_buffer[0];
1411 for (c = 0; c < channel_count; c++) {
1412 int plane = s->desc->comp[c].plane;
1413 ptr = p->data[plane] + window_ymin * p->linesize[plane] + (window_xmin * 4);
1415 for (i = 0; i < ysize; i++, ptr += p->linesize[plane]) {
1417 union av_intfloat32 *ptr_x;
1419 src = channel_buffer[c];
1420 ptr_x = (union av_intfloat32 *)ptr;
1422 // Zero out the start if xmin is not 0
1423 memset(ptr_x, 0, bxmin);
1424 ptr_x += window_xoffset;
1426 if (s->pixel_type == EXR_FLOAT ||
1427 s->compression == EXR_DWAA ||
1428 s->compression == EXR_DWAB) {
1430 union av_intfloat32 t;
1431 if (trc_func && c < 3) {
1432 for (x = 0; x < xsize; x++) {
1433 t.i = bytestream_get_le32(&src);
1434 t.f = trc_func(t.f);
1437 } else if (one_gamma != 1.f) {
1438 for (x = 0; x < xsize; x++) {
1439 t.i = bytestream_get_le32(&src);
1440 if (t.f > 0.0f && c < 3) /* avoid negative values */
1441 t.f = powf(t.f, one_gamma);
1445 for (x = 0; x < xsize; x++) {
1446 t.i = bytestream_get_le32(&src);
1450 } else if (s->pixel_type == EXR_HALF) {
1452 if (c < 3 || !trc_func) {
1453 for (x = 0; x < xsize; x++) {
1454 *ptr_x++ = s->gamma_table[bytestream_get_le16(&src)];
1457 for (x = 0; x < xsize; x++) {
1458 *ptr_x++ = exr_half2float(bytestream_get_le16(&src));
1463 // Zero out the end if xmax+1 is not w
1464 memset(ptr_x, 0, axmax);
1465 channel_buffer[c] += td->channel_line_size;
1470 av_assert1(s->pixel_type == EXR_UINT);
1471 ptr = p->data[0] + window_ymin * p->linesize[0] + (window_xmin * s->desc->nb_components * 2);
1473 for (i = 0; i < ysize; i++, ptr += p->linesize[0]) {
1476 const uint8_t *rgb[3];
1479 for (c = 0; c < rgb_channel_count; c++) {
1480 rgb[c] = channel_buffer[c];
1483 if (channel_buffer[3])
1484 a = channel_buffer[3];
1486 ptr_x = (uint16_t *) ptr;
1488 // Zero out the start if xmin is not 0
1489 memset(ptr_x, 0, bxmin);
1490 ptr_x += window_xoffset * s->desc->nb_components;
1492 for (x = 0; x < xsize; x++) {
1493 for (c = 0; c < rgb_channel_count; c++) {
1494 *ptr_x++ = bytestream_get_le32(&rgb[c]) >> 16;
1497 if (channel_buffer[3])
1498 *ptr_x++ = bytestream_get_le32(&a) >> 16;
1501 // Zero out the end if xmax+1 is not w
1502 memset(ptr_x, 0, axmax);
1504 channel_buffer[0] += td->channel_line_size;
1505 channel_buffer[1] += td->channel_line_size;
1506 channel_buffer[2] += td->channel_line_size;
1507 if (channel_buffer[3])
1508 channel_buffer[3] += td->channel_line_size;
1515 static void skip_header_chunk(EXRContext *s)
1517 GetByteContext *gb = &s->gb;
1519 while (bytestream2_get_bytes_left(gb) > 0) {
1520 if (!bytestream2_peek_byte(gb))
1523 // Process unknown variables
1524 for (int i = 0; i < 2; i++) // value_name and value_type
1525 while (bytestream2_get_byte(gb) != 0);
1527 // Skip variable length
1528 bytestream2_skip(gb, bytestream2_get_le32(gb));
1533 * Check if the variable name corresponds to its data type.
1535 * @param s the EXRContext
1536 * @param value_name name of the variable to check
1537 * @param value_type type of the variable to check
1538 * @param minimum_length minimum length of the variable data
1540 * @return bytes to read containing variable data
1541 * -1 if variable is not found
1542 * 0 if buffer ended prematurely
1544 static int check_header_variable(EXRContext *s,
1545 const char *value_name,
1546 const char *value_type,
1547 unsigned int minimum_length)
1549 GetByteContext *gb = &s->gb;
1552 if (bytestream2_get_bytes_left(gb) >= minimum_length &&
1553 !strcmp(gb->buffer, value_name)) {
1554 // found value_name, jump to value_type (null terminated strings)
1555 gb->buffer += strlen(value_name) + 1;
1556 if (!strcmp(gb->buffer, value_type)) {
1557 gb->buffer += strlen(value_type) + 1;
1558 var_size = bytestream2_get_le32(gb);
1559 // don't go read past boundaries
1560 if (var_size > bytestream2_get_bytes_left(gb))
1563 // value_type not found, reset the buffer
1564 gb->buffer -= strlen(value_name) + 1;
1565 av_log(s->avctx, AV_LOG_WARNING,
1566 "Unknown data type %s for header variable %s.\n",
1567 value_type, value_name);
1574 static int decode_header(EXRContext *s, AVFrame *frame)
1576 AVDictionary *metadata = NULL;
1577 GetByteContext *gb = &s->gb;
1578 int magic_number, version, flags;
1579 int layer_match = 0;
1581 int dup_channels = 0;
1583 s->current_channel_offset = 0;
1590 s->channel_offsets[0] = -1;
1591 s->channel_offsets[1] = -1;
1592 s->channel_offsets[2] = -1;
1593 s->channel_offsets[3] = -1;
1594 s->pixel_type = EXR_UNKNOWN;
1595 s->compression = EXR_UNKN;
1599 s->tile_attr.xSize = -1;
1600 s->tile_attr.ySize = -1;
1602 s->is_multipart = 0;
1604 s->current_part = 0;
1606 if (bytestream2_get_bytes_left(gb) < 10) {
1607 av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
1608 return AVERROR_INVALIDDATA;
1611 magic_number = bytestream2_get_le32(gb);
1612 if (magic_number != 20000630) {
1613 /* As per documentation of OpenEXR, it is supposed to be
1614 * int 20000630 little-endian */
1615 av_log(s->avctx, AV_LOG_ERROR, "Wrong magic number %d.\n", magic_number);
1616 return AVERROR_INVALIDDATA;
1619 version = bytestream2_get_byte(gb);
1621 avpriv_report_missing_feature(s->avctx, "Version %d", version);
1622 return AVERROR_PATCHWELCOME;
1625 flags = bytestream2_get_le24(gb);
1630 s->is_multipart = 1;
1632 avpriv_report_missing_feature(s->avctx, "deep data");
1633 return AVERROR_PATCHWELCOME;
1637 while (bytestream2_get_bytes_left(gb) > 0) {
1640 while (s->is_multipart && s->current_part < s->selected_part &&
1641 bytestream2_get_bytes_left(gb) > 0) {
1642 if (bytestream2_peek_byte(gb)) {
1643 skip_header_chunk(s);
1645 bytestream2_skip(gb, 1);
1646 if (!bytestream2_peek_byte(gb))
1649 bytestream2_skip(gb, 1);
1653 if (!bytestream2_peek_byte(gb)) {
1654 if (!s->is_multipart)
1656 bytestream2_skip(gb, 1);
1657 if (s->current_part == s->selected_part) {
1658 while (bytestream2_get_bytes_left(gb) > 0) {
1659 if (bytestream2_peek_byte(gb)) {
1660 skip_header_chunk(s);
1662 bytestream2_skip(gb, 1);
1663 if (!bytestream2_peek_byte(gb))
1668 if (!bytestream2_peek_byte(gb))
1673 if ((var_size = check_header_variable(s, "channels",
1674 "chlist", 38)) >= 0) {
1675 GetByteContext ch_gb;
1677 ret = AVERROR_INVALIDDATA;
1681 bytestream2_init(&ch_gb, gb->buffer, var_size);
1683 while (bytestream2_get_bytes_left(&ch_gb) >= 19) {
1684 EXRChannel *channel;
1685 enum ExrPixelType current_pixel_type;
1686 int channel_index = -1;
1689 if (strcmp(s->layer, "") != 0) {
1690 if (strncmp(ch_gb.buffer, s->layer, strlen(s->layer)) == 0) {
1692 av_log(s->avctx, AV_LOG_INFO,
1693 "Channel match layer : %s.\n", ch_gb.buffer);
1694 ch_gb.buffer += strlen(s->layer);
1695 if (*ch_gb.buffer == '.')
1696 ch_gb.buffer++; /* skip dot if not given */
1699 av_log(s->avctx, AV_LOG_INFO,
1700 "Channel doesn't match layer : %s.\n", ch_gb.buffer);
1706 if (layer_match) { /* only search channel if the layer match is valid */
1707 if (!av_strcasecmp(ch_gb.buffer, "R") ||
1708 !av_strcasecmp(ch_gb.buffer, "X") ||
1709 !av_strcasecmp(ch_gb.buffer, "U")) {
1712 } else if (!av_strcasecmp(ch_gb.buffer, "G") ||
1713 !av_strcasecmp(ch_gb.buffer, "V")) {
1716 } else if (!av_strcasecmp(ch_gb.buffer, "Y")) {
1719 } else if (!av_strcasecmp(ch_gb.buffer, "B") ||
1720 !av_strcasecmp(ch_gb.buffer, "Z") ||
1721 !av_strcasecmp(ch_gb.buffer, "W")) {
1724 } else if (!av_strcasecmp(ch_gb.buffer, "A")) {
1727 av_log(s->avctx, AV_LOG_WARNING,
1728 "Unsupported channel %.256s.\n", ch_gb.buffer);
1732 /* skip until you get a 0 */
1733 while (bytestream2_get_bytes_left(&ch_gb) > 0 &&
1734 bytestream2_get_byte(&ch_gb))
1737 if (bytestream2_get_bytes_left(&ch_gb) < 4) {
1738 av_log(s->avctx, AV_LOG_ERROR, "Incomplete header.\n");
1739 ret = AVERROR_INVALIDDATA;
1743 current_pixel_type = bytestream2_get_le32(&ch_gb);
1744 if (current_pixel_type >= EXR_UNKNOWN) {
1745 avpriv_report_missing_feature(s->avctx, "Pixel type %d",
1746 current_pixel_type);
1747 ret = AVERROR_PATCHWELCOME;
1751 bytestream2_skip(&ch_gb, 4);
1752 xsub = bytestream2_get_le32(&ch_gb);
1753 ysub = bytestream2_get_le32(&ch_gb);
1755 if (xsub != 1 || ysub != 1) {
1756 avpriv_report_missing_feature(s->avctx,
1757 "Subsampling %dx%d",
1759 ret = AVERROR_PATCHWELCOME;
1763 if (channel_index >= 0 && s->channel_offsets[channel_index] == -1) { /* channel has not been previously assigned */
1764 if (s->pixel_type != EXR_UNKNOWN &&
1765 s->pixel_type != current_pixel_type) {
1766 av_log(s->avctx, AV_LOG_ERROR,
1767 "RGB channels not of the same depth.\n");
1768 ret = AVERROR_INVALIDDATA;
1771 s->pixel_type = current_pixel_type;
1772 s->channel_offsets[channel_index] = s->current_channel_offset;
1773 } else if (channel_index >= 0) {
1774 av_log(s->avctx, AV_LOG_WARNING,
1775 "Multiple channels with index %d.\n", channel_index);
1776 if (++dup_channels > 10) {
1777 ret = AVERROR_INVALIDDATA;
1782 s->channels = av_realloc(s->channels,
1783 ++s->nb_channels * sizeof(EXRChannel));
1785 ret = AVERROR(ENOMEM);
1788 channel = &s->channels[s->nb_channels - 1];
1789 channel->pixel_type = current_pixel_type;
1790 channel->xsub = xsub;
1791 channel->ysub = ysub;
1793 if (current_pixel_type == EXR_HALF) {
1794 s->current_channel_offset += 2;
1795 } else {/* Float or UINT32 */
1796 s->current_channel_offset += 4;
1800 /* Check if all channels are set with an offset or if the channels
1801 * are causing an overflow */
1802 if (!s->is_luma) {/* if we expected to have at least 3 channels */
1803 if (FFMIN3(s->channel_offsets[0],
1804 s->channel_offsets[1],
1805 s->channel_offsets[2]) < 0) {
1806 if (s->channel_offsets[0] < 0)
1807 av_log(s->avctx, AV_LOG_ERROR, "Missing red channel.\n");
1808 if (s->channel_offsets[1] < 0)
1809 av_log(s->avctx, AV_LOG_ERROR, "Missing green channel.\n");
1810 if (s->channel_offsets[2] < 0)
1811 av_log(s->avctx, AV_LOG_ERROR, "Missing blue channel.\n");
1812 ret = AVERROR_INVALIDDATA;
1817 // skip one last byte and update main gb
1818 gb->buffer = ch_gb.buffer + 1;
1820 } else if ((var_size = check_header_variable(s, "dataWindow", "box2i",
1822 int xmin, ymin, xmax, ymax;
1824 ret = AVERROR_INVALIDDATA;
1828 xmin = bytestream2_get_le32(gb);
1829 ymin = bytestream2_get_le32(gb);
1830 xmax = bytestream2_get_le32(gb);
1831 ymax = bytestream2_get_le32(gb);
1833 if (xmin > xmax || ymin > ymax ||
1834 (unsigned)xmax - xmin >= INT_MAX ||
1835 (unsigned)ymax - ymin >= INT_MAX) {
1836 ret = AVERROR_INVALIDDATA;
1843 s->xdelta = (s->xmax - s->xmin) + 1;
1844 s->ydelta = (s->ymax - s->ymin) + 1;
1847 } else if ((var_size = check_header_variable(s, "displayWindow",
1848 "box2i", 34)) >= 0) {
1849 int32_t sx, sy, dx, dy;
1852 ret = AVERROR_INVALIDDATA;
1856 sx = bytestream2_get_le32(gb);
1857 sy = bytestream2_get_le32(gb);
1858 dx = bytestream2_get_le32(gb);
1859 dy = bytestream2_get_le32(gb);
1865 } else if ((var_size = check_header_variable(s, "lineOrder",
1866 "lineOrder", 25)) >= 0) {
1869 ret = AVERROR_INVALIDDATA;
1873 line_order = bytestream2_get_byte(gb);
1874 av_log(s->avctx, AV_LOG_DEBUG, "line order: %d.\n", line_order);
1875 if (line_order > 2) {
1876 av_log(s->avctx, AV_LOG_ERROR, "Unknown line order.\n");
1877 ret = AVERROR_INVALIDDATA;
1882 } else if ((var_size = check_header_variable(s, "pixelAspectRatio",
1883 "float", 31)) >= 0) {
1885 ret = AVERROR_INVALIDDATA;
1889 s->sar = bytestream2_get_le32(gb);
1892 } else if ((var_size = check_header_variable(s, "compression",
1893 "compression", 29)) >= 0) {
1895 ret = AVERROR_INVALIDDATA;
1899 if (s->compression == EXR_UNKN)
1900 s->compression = bytestream2_get_byte(gb);
1902 bytestream2_skip(gb, 1);
1903 av_log(s->avctx, AV_LOG_WARNING,
1904 "Found more than one compression attribute.\n");
1908 } else if ((var_size = check_header_variable(s, "tiles",
1909 "tiledesc", 22)) >= 0) {
1913 av_log(s->avctx, AV_LOG_WARNING,
1914 "Found tile attribute and scanline flags. Exr will be interpreted as scanline.\n");
1916 s->tile_attr.xSize = bytestream2_get_le32(gb);
1917 s->tile_attr.ySize = bytestream2_get_le32(gb);
1919 tileLevel = bytestream2_get_byte(gb);
1920 s->tile_attr.level_mode = tileLevel & 0x0f;
1921 s->tile_attr.level_round = (tileLevel >> 4) & 0x0f;
1923 if (s->tile_attr.level_mode >= EXR_TILE_LEVEL_UNKNOWN) {
1924 avpriv_report_missing_feature(s->avctx, "Tile level mode %d",
1925 s->tile_attr.level_mode);
1926 ret = AVERROR_PATCHWELCOME;
1930 if (s->tile_attr.level_round >= EXR_TILE_ROUND_UNKNOWN) {
1931 avpriv_report_missing_feature(s->avctx, "Tile level round %d",
1932 s->tile_attr.level_round);
1933 ret = AVERROR_PATCHWELCOME;
1938 } else if ((var_size = check_header_variable(s, "writer",
1939 "string", 1)) >= 0) {
1940 uint8_t key[256] = { 0 };
1942 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1943 av_dict_set(&metadata, "writer", key, 0);
1946 } else if ((var_size = check_header_variable(s, "framesPerSecond",
1947 "rational", 33)) >= 0) {
1949 ret = AVERROR_INVALIDDATA;
1953 s->avctx->framerate.num = bytestream2_get_le32(gb);
1954 s->avctx->framerate.den = bytestream2_get_le32(gb);
1957 } else if ((var_size = check_header_variable(s, "chunkCount",
1960 s->chunk_count = bytestream2_get_le32(gb);
1963 } else if ((var_size = check_header_variable(s, "type",
1964 "string", 16)) >= 0) {
1965 uint8_t key[256] = { 0 };
1967 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1968 if (strncmp("scanlineimage", key, var_size) &&
1969 strncmp("tiledimage", key, var_size))
1970 return AVERROR_PATCHWELCOME;
1973 } else if ((var_size = check_header_variable(s, "preview",
1974 "preview", 16)) >= 0) {
1975 uint32_t pw = bytestream2_get_le32(gb);
1976 uint32_t ph = bytestream2_get_le32(gb);
1977 int64_t psize = 4LL * pw * ph;
1979 if (psize >= bytestream2_get_bytes_left(gb))
1980 return AVERROR_INVALIDDATA;
1982 bytestream2_skip(gb, psize);
1987 // Check if there are enough bytes for a header
1988 if (bytestream2_get_bytes_left(gb) <= 9) {
1989 av_log(s->avctx, AV_LOG_ERROR, "Incomplete header\n");
1990 ret = AVERROR_INVALIDDATA;
1994 // Process unknown variables
1996 uint8_t name[256] = { 0 };
1997 uint8_t type[256] = { 0 };
1998 uint8_t value[256] = { 0 };
2001 while (bytestream2_get_bytes_left(gb) > 0 &&
2002 bytestream2_peek_byte(gb) && i < 255) {
2003 name[i++] = bytestream2_get_byte(gb);
2006 bytestream2_skip(gb, 1);
2008 while (bytestream2_get_bytes_left(gb) > 0 &&
2009 bytestream2_peek_byte(gb) && i < 255) {
2010 type[i++] = bytestream2_get_byte(gb);
2012 bytestream2_skip(gb, 1);
2013 size = bytestream2_get_le32(gb);
2015 bytestream2_get_buffer(gb, value, FFMIN(sizeof(value) - 1, size));
2016 if (!strcmp(type, "string"))
2017 av_dict_set(&metadata, name, value, 0);
2021 if (s->compression == EXR_UNKN) {
2022 av_log(s->avctx, AV_LOG_ERROR, "Missing compression attribute.\n");
2023 ret = AVERROR_INVALIDDATA;
2028 if (s->tile_attr.xSize < 1 || s->tile_attr.ySize < 1) {
2029 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile attribute.\n");
2030 ret = AVERROR_INVALIDDATA;
2035 if (bytestream2_get_bytes_left(gb) <= 0) {
2036 av_log(s->avctx, AV_LOG_ERROR, "Incomplete frame.\n");
2037 ret = AVERROR_INVALIDDATA;
2041 frame->metadata = metadata;
2043 // aaand we are done
2044 bytestream2_skip(gb, 1);
2047 av_dict_free(&metadata);
2051 static int decode_frame(AVCodecContext *avctx, void *data,
2052 int *got_frame, AVPacket *avpkt)
2054 EXRContext *s = avctx->priv_data;
2055 GetByteContext *gb = &s->gb;
2056 ThreadFrame frame = { .f = data };
2057 AVFrame *picture = data;
2060 int i, y, ret, ymax;
2063 int nb_blocks; /* nb scanline or nb tile */
2064 uint64_t start_offset_table;
2065 uint64_t start_next_scanline;
2066 PutByteContext offset_table_writer;
2068 bytestream2_init(gb, avpkt->data, avpkt->size);
2070 if ((ret = decode_header(s, picture)) < 0)
2073 if ((s->compression == EXR_DWAA || s->compression == EXR_DWAB) &&
2074 s->pixel_type == EXR_HALF) {
2075 s->current_channel_offset *= 2;
2076 for (int i = 0; i < 4; i++)
2077 s->channel_offsets[i] *= 2;
2080 switch (s->pixel_type) {
2083 if (s->channel_offsets[3] >= 0) {
2085 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
2087 /* todo: change this when a floating point pixel format with luma with alpha is implemented */
2088 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
2092 avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
2094 avctx->pix_fmt = AV_PIX_FMT_GRAYF32;
2099 if (s->channel_offsets[3] >= 0) {
2101 avctx->pix_fmt = AV_PIX_FMT_RGBA64;
2103 avctx->pix_fmt = AV_PIX_FMT_YA16;
2107 avctx->pix_fmt = AV_PIX_FMT_RGB48;
2109 avctx->pix_fmt = AV_PIX_FMT_GRAY16;
2114 av_log(avctx, AV_LOG_ERROR, "Missing channel list.\n");
2115 return AVERROR_INVALIDDATA;
2118 if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED)
2119 avctx->color_trc = s->apply_trc_type;
2121 switch (s->compression) {
2125 s->scan_lines_per_block = 1;
2129 s->scan_lines_per_block = 16;
2135 s->scan_lines_per_block = 32;
2138 s->scan_lines_per_block = 256;
2141 avpriv_report_missing_feature(avctx, "Compression %d", s->compression);
2142 return AVERROR_PATCHWELCOME;
2145 /* Verify the xmin, xmax, ymin and ymax before setting the actual image size.
2146 * It's possible for the data window can larger or outside the display window */
2147 if (s->xmin > s->xmax || s->ymin > s->ymax ||
2148 s->ydelta == 0xFFFFFFFF || s->xdelta == 0xFFFFFFFF) {
2149 av_log(avctx, AV_LOG_ERROR, "Wrong or missing size information.\n");
2150 return AVERROR_INVALIDDATA;
2153 if ((ret = ff_set_dimensions(avctx, s->w, s->h)) < 0)
2156 ff_set_sar(s->avctx, av_d2q(av_int2float(s->sar), 255));
2158 s->desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2160 return AVERROR_INVALIDDATA;
2162 if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
2163 planes = s->desc->nb_components;
2164 out_line_size = avctx->width * 4;
2167 out_line_size = avctx->width * 2 * s->desc->nb_components;
2171 nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) *
2172 ((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize);
2173 } else { /* scanline */
2174 nb_blocks = (s->ydelta + s->scan_lines_per_block - 1) /
2175 s->scan_lines_per_block;
2178 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
2181 if (bytestream2_get_bytes_left(gb)/8 < nb_blocks)
2182 return AVERROR_INVALIDDATA;
2184 // check offset table and recreate it if need
2185 if (!s->is_tile && bytestream2_peek_le64(gb) == 0) {
2186 av_log(s->avctx, AV_LOG_DEBUG, "recreating invalid scanline offset table\n");
2188 start_offset_table = bytestream2_tell(gb);
2189 start_next_scanline = start_offset_table + nb_blocks * 8;
2190 bytestream2_init_writer(&offset_table_writer, &avpkt->data[start_offset_table], nb_blocks * 8);
2192 for (y = 0; y < nb_blocks; y++) {
2193 /* write offset of prev scanline in offset table */
2194 bytestream2_put_le64(&offset_table_writer, start_next_scanline);
2196 /* get len of next scanline */
2197 bytestream2_seek(gb, start_next_scanline + 4, SEEK_SET);/* skip line number */
2198 start_next_scanline += (bytestream2_get_le32(gb) + 8);
2200 bytestream2_seek(gb, start_offset_table, SEEK_SET);
2203 // save pointer we are going to use in decode_block
2204 s->buf = avpkt->data;
2205 s->buf_size = avpkt->size;
2207 // Zero out the start if ymin is not 0
2208 for (i = 0; i < planes; i++) {
2209 ptr = picture->data[i];
2210 for (y = 0; y < FFMIN(s->ymin, s->h); y++) {
2211 memset(ptr, 0, out_line_size);
2212 ptr += picture->linesize[i];
2216 s->picture = picture;
2218 avctx->execute2(avctx, decode_block, s->thread_data, NULL, nb_blocks);
2220 ymax = FFMAX(0, s->ymax + 1);
2221 // Zero out the end if ymax+1 is not h
2222 if (ymax < avctx->height)
2223 for (i = 0; i < planes; i++) {
2224 ptr = picture->data[i] + (ymax * picture->linesize[i]);
2225 for (y = ymax; y < avctx->height; y++) {
2226 memset(ptr, 0, out_line_size);
2227 ptr += picture->linesize[i];
2231 picture->pict_type = AV_PICTURE_TYPE_I;
2237 static av_cold int decode_init(AVCodecContext *avctx)
2239 EXRContext *s = avctx->priv_data;
2241 union av_intfloat32 t;
2242 float one_gamma = 1.0f / s->gamma;
2243 avpriv_trc_function trc_func = NULL;
2247 ff_exrdsp_init(&s->dsp);
2250 ff_bswapdsp_init(&s->bbdsp);
2253 trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
2255 for (i = 0; i < 65536; ++i) {
2256 t = exr_half2float(i);
2257 t.f = trc_func(t.f);
2258 s->gamma_table[i] = t;
2261 if (one_gamma > 0.9999f && one_gamma < 1.0001f) {
2262 for (i = 0; i < 65536; ++i) {
2263 s->gamma_table[i] = exr_half2float(i);
2266 for (i = 0; i < 65536; ++i) {
2267 t = exr_half2float(i);
2268 /* If negative value we reuse half value */
2270 s->gamma_table[i] = t;
2272 t.f = powf(t.f, one_gamma);
2273 s->gamma_table[i] = t;
2279 // allocate thread data, used for non EXR_RAW compression types
2280 s->thread_data = av_mallocz_array(avctx->thread_count, sizeof(EXRThreadData));
2281 if (!s->thread_data)
2282 return AVERROR_INVALIDDATA;
2287 static av_cold int decode_end(AVCodecContext *avctx)
2289 EXRContext *s = avctx->priv_data;
2291 for (i = 0; i < avctx->thread_count; i++) {
2292 EXRThreadData *td = &s->thread_data[i];
2293 av_freep(&td->uncompressed_data);
2295 av_freep(&td->bitmap);
2298 av_freep(&td->freq);
2299 av_freep(&td->ac_data);
2300 av_freep(&td->dc_data);
2301 av_freep(&td->rle_data);
2302 av_freep(&td->rle_raw_data);
2303 ff_free_vlc(&td->vlc);
2306 av_freep(&s->thread_data);
2307 av_freep(&s->channels);
2312 #define OFFSET(x) offsetof(EXRContext, x)
2313 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2314 static const AVOption options[] = {
2315 { "layer", "Set the decoding layer", OFFSET(layer),
2316 AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
2317 { "part", "Set the decoding part", OFFSET(selected_part),
2318 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
2319 { "gamma", "Set the float gamma value when decoding", OFFSET(gamma),
2320 AV_OPT_TYPE_FLOAT, { .dbl = 1.0f }, 0.001, FLT_MAX, VD },
2322 // XXX: Note the abuse of the enum using AVCOL_TRC_UNSPECIFIED to subsume the existing gamma option
2323 { "apply_trc", "color transfer characteristics to apply to EXR linear input", OFFSET(apply_trc_type),
2324 AV_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, VD, "apply_trc_type"},
2325 { "bt709", "BT.709", 0,
2326 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT709 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2327 { "gamma", "gamma", 0,
2328 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_UNSPECIFIED }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2329 { "gamma22", "BT.470 M", 0,
2330 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA22 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2331 { "gamma28", "BT.470 BG", 0,
2332 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA28 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2333 { "smpte170m", "SMPTE 170 M", 0,
2334 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2335 { "smpte240m", "SMPTE 240 M", 0,
2336 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE240M }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2337 { "linear", "Linear", 0,
2338 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LINEAR }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2340 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2341 { "log_sqrt", "Log square root", 0,
2342 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG_SQRT }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2343 { "iec61966_2_4", "IEC 61966-2-4", 0,
2344 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_4 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2345 { "bt1361", "BT.1361", 0,
2346 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT1361_ECG }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2347 { "iec61966_2_1", "IEC 61966-2-1", 0,
2348 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2349 { "bt2020_10bit", "BT.2020 - 10 bit", 0,
2350 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_10 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2351 { "bt2020_12bit", "BT.2020 - 12 bit", 0,
2352 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2353 { "smpte2084", "SMPTE ST 2084", 0,
2354 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2355 { "smpte428_1", "SMPTE ST 428-1", 0,
2356 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2361 static const AVClass exr_class = {
2362 .class_name = "EXR",
2363 .item_name = av_default_item_name,
2365 .version = LIBAVUTIL_VERSION_INT,
2368 AVCodec ff_exr_decoder = {
2370 .long_name = NULL_IF_CONFIG_SMALL("OpenEXR image"),
2371 .type = AVMEDIA_TYPE_VIDEO,
2372 .id = AV_CODEC_ID_EXR,
2373 .priv_data_size = sizeof(EXRContext),
2374 .init = decode_init,
2375 .close = decode_end,
2376 .decode = decode_frame,
2377 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
2378 AV_CODEC_CAP_SLICE_THREADS,
2379 .priv_class = &exr_class,