mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
2349 lines
76 KiB
C
2349 lines
76 KiB
C
/*
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* OpenEXR (.exr) image decoder
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* Copyright (c) 2006 Industrial Light & Magic, a division of Lucas Digital Ltd. LLC
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* Copyright (c) 2009 Jimmy Christensen
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*
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* B44/B44A, Tile, UINT32 added by Jokyo Images support by CNC - French National Center for Cinema
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* OpenEXR decoder
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* @author Jimmy Christensen
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*
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* For more information on the OpenEXR format, visit:
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* http://openexr.com/
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*/
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#include <float.h>
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#include <zlib.h>
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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intfloat.h"
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#include "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "libavutil/color_utils.h"
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#include "libavutil/half2float.h"
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#include "avcodec.h"
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#include "bytestream.h"
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#if HAVE_BIGENDIAN
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#include "bswapdsp.h"
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#endif
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#include "codec_internal.h"
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#include "exrdsp.h"
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#include "get_bits.h"
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#include "internal.h"
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#include "mathops.h"
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#include "thread.h"
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enum ExrCompr {
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EXR_RAW,
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EXR_RLE,
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EXR_ZIP1,
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EXR_ZIP16,
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EXR_PIZ,
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EXR_PXR24,
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EXR_B44,
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EXR_B44A,
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EXR_DWAA,
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EXR_DWAB,
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EXR_UNKN,
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};
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enum ExrPixelType {
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EXR_UINT,
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EXR_HALF,
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EXR_FLOAT,
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EXR_UNKNOWN,
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};
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enum ExrTileLevelMode {
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EXR_TILE_LEVEL_ONE,
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EXR_TILE_LEVEL_MIPMAP,
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EXR_TILE_LEVEL_RIPMAP,
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EXR_TILE_LEVEL_UNKNOWN,
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};
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enum ExrTileLevelRound {
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EXR_TILE_ROUND_UP,
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EXR_TILE_ROUND_DOWN,
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EXR_TILE_ROUND_UNKNOWN,
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};
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typedef struct HuffEntry {
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uint8_t len;
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uint16_t sym;
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uint32_t code;
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} HuffEntry;
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typedef struct EXRChannel {
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int xsub, ysub;
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enum ExrPixelType pixel_type;
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} EXRChannel;
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typedef struct EXRTileAttribute {
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int32_t xSize;
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int32_t ySize;
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enum ExrTileLevelMode level_mode;
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enum ExrTileLevelRound level_round;
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} EXRTileAttribute;
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typedef struct EXRThreadData {
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uint8_t *uncompressed_data;
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int uncompressed_size;
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uint8_t *tmp;
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int tmp_size;
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uint8_t *bitmap;
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uint16_t *lut;
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uint8_t *ac_data;
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unsigned ac_size;
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uint8_t *dc_data;
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unsigned dc_size;
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uint8_t *rle_data;
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unsigned rle_size;
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uint8_t *rle_raw_data;
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unsigned rle_raw_size;
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float block[3][64];
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int ysize, xsize;
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int channel_line_size;
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int run_sym;
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HuffEntry *he;
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uint64_t *freq;
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VLC vlc;
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} EXRThreadData;
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typedef struct EXRContext {
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AVClass *class;
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AVFrame *picture;
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AVCodecContext *avctx;
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ExrDSPContext dsp;
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#if HAVE_BIGENDIAN
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BswapDSPContext bbdsp;
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#endif
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enum ExrCompr compression;
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enum ExrPixelType pixel_type;
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int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
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const AVPixFmtDescriptor *desc;
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int w, h;
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uint32_t sar;
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int32_t xmax, xmin;
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int32_t ymax, ymin;
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uint32_t xdelta, ydelta;
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int scan_lines_per_block;
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EXRTileAttribute tile_attr; /* header data attribute of tile */
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int is_tile; /* 0 if scanline, 1 if tile */
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int is_multipart;
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int current_part;
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int is_luma;/* 1 if there is an Y plane */
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GetByteContext gb;
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const uint8_t *buf;
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int buf_size;
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EXRChannel *channels;
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int nb_channels;
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int current_channel_offset;
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uint32_t chunk_count;
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EXRThreadData *thread_data;
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const char *layer;
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int selected_part;
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enum AVColorTransferCharacteristic apply_trc_type;
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float gamma;
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union av_intfloat32 gamma_table[65536];
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Half2FloatTables h2f_tables;
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} EXRContext;
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static int zip_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
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int uncompressed_size, EXRThreadData *td)
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{
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unsigned long dest_len = uncompressed_size;
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if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
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dest_len != uncompressed_size)
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return AVERROR_INVALIDDATA;
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av_assert1(uncompressed_size % 2 == 0);
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s->dsp.predictor(td->tmp, uncompressed_size);
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s->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
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return 0;
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}
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static int rle(uint8_t *dst, const uint8_t *src,
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int compressed_size, int uncompressed_size)
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{
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uint8_t *d = dst;
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const int8_t *s = src;
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int ssize = compressed_size;
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int dsize = uncompressed_size;
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uint8_t *dend = d + dsize;
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int count;
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while (ssize > 0) {
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count = *s++;
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if (count < 0) {
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count = -count;
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if ((dsize -= count) < 0 ||
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(ssize -= count + 1) < 0)
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return AVERROR_INVALIDDATA;
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while (count--)
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*d++ = *s++;
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} else {
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count++;
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if ((dsize -= count) < 0 ||
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(ssize -= 2) < 0)
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return AVERROR_INVALIDDATA;
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while (count--)
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*d++ = *s;
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s++;
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}
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}
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if (dend != d)
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return AVERROR_INVALIDDATA;
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return 0;
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}
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static int rle_uncompress(const EXRContext *ctx, const uint8_t *src, int compressed_size,
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int uncompressed_size, EXRThreadData *td)
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{
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rle(td->tmp, src, compressed_size, uncompressed_size);
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av_assert1(uncompressed_size % 2 == 0);
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ctx->dsp.predictor(td->tmp, uncompressed_size);
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ctx->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
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return 0;
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}
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#define USHORT_RANGE (1 << 16)
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#define BITMAP_SIZE (1 << 13)
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static uint16_t reverse_lut(const uint8_t *bitmap, uint16_t *lut)
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{
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int i, k = 0;
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for (i = 0; i < USHORT_RANGE; i++)
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if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
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lut[k++] = i;
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i = k - 1;
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memset(lut + k, 0, (USHORT_RANGE - k) * 2);
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return i;
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}
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static void apply_lut(const uint16_t *lut, uint16_t *dst, int dsize)
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{
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int i;
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for (i = 0; i < dsize; ++i)
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dst[i] = lut[dst[i]];
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}
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#define HUF_ENCBITS 16 // literal (value) bit length
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#define HUF_ENCSIZE ((1 << HUF_ENCBITS) + 1) // encoding table size
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static void huf_canonical_code_table(uint64_t *freq)
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{
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uint64_t c, n[59] = { 0 };
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int i;
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for (i = 0; i < HUF_ENCSIZE; i++)
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n[freq[i]] += 1;
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c = 0;
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for (i = 58; i > 0; --i) {
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uint64_t nc = ((c + n[i]) >> 1);
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n[i] = c;
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c = nc;
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}
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for (i = 0; i < HUF_ENCSIZE; ++i) {
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int l = freq[i];
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if (l > 0)
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freq[i] = l | (n[l]++ << 6);
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}
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}
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#define SHORT_ZEROCODE_RUN 59
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#define LONG_ZEROCODE_RUN 63
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#define SHORTEST_LONG_RUN (2 + LONG_ZEROCODE_RUN - SHORT_ZEROCODE_RUN)
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#define LONGEST_LONG_RUN (255 + SHORTEST_LONG_RUN)
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static int huf_unpack_enc_table(GetByteContext *gb,
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int32_t im, int32_t iM, uint64_t *freq)
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{
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GetBitContext gbit;
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int ret = init_get_bits8(&gbit, gb->buffer, bytestream2_get_bytes_left(gb));
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if (ret < 0)
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return ret;
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for (; im <= iM; im++) {
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uint64_t l = freq[im] = get_bits(&gbit, 6);
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if (l == LONG_ZEROCODE_RUN) {
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int zerun = get_bits(&gbit, 8) + SHORTEST_LONG_RUN;
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if (im + zerun > iM + 1)
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return AVERROR_INVALIDDATA;
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while (zerun--)
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freq[im++] = 0;
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im--;
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} else if (l >= SHORT_ZEROCODE_RUN) {
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int zerun = l - SHORT_ZEROCODE_RUN + 2;
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if (im + zerun > iM + 1)
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return AVERROR_INVALIDDATA;
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while (zerun--)
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freq[im++] = 0;
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im--;
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}
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}
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bytestream2_skip(gb, (get_bits_count(&gbit) + 7) / 8);
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huf_canonical_code_table(freq);
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return 0;
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}
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static int huf_build_dec_table(const EXRContext *s,
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EXRThreadData *td, int im, int iM)
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{
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int j = 0;
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td->run_sym = -1;
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for (int i = im; i < iM; i++) {
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td->he[j].sym = i;
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td->he[j].len = td->freq[i] & 63;
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td->he[j].code = td->freq[i] >> 6;
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if (td->he[j].len > 32) {
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avpriv_request_sample(s->avctx, "Too big code length");
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return AVERROR_PATCHWELCOME;
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}
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if (td->he[j].len > 0)
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j++;
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else
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td->run_sym = i;
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}
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if (im > 0)
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td->run_sym = 0;
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else if (iM < 65535)
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td->run_sym = 65535;
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if (td->run_sym == -1) {
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avpriv_request_sample(s->avctx, "No place for run symbol");
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return AVERROR_PATCHWELCOME;
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}
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td->he[j].sym = td->run_sym;
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td->he[j].len = td->freq[iM] & 63;
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if (td->he[j].len > 32) {
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avpriv_request_sample(s->avctx, "Too big code length");
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return AVERROR_PATCHWELCOME;
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}
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td->he[j].code = td->freq[iM] >> 6;
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j++;
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ff_free_vlc(&td->vlc);
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return ff_init_vlc_sparse(&td->vlc, 12, j,
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&td->he[0].len, sizeof(td->he[0]), sizeof(td->he[0].len),
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&td->he[0].code, sizeof(td->he[0]), sizeof(td->he[0].code),
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&td->he[0].sym, sizeof(td->he[0]), sizeof(td->he[0].sym), 0);
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}
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static int huf_decode(VLC *vlc, GetByteContext *gb, int nbits, int run_sym,
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int no, uint16_t *out)
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{
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GetBitContext gbit;
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int oe = 0;
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init_get_bits(&gbit, gb->buffer, nbits);
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while (get_bits_left(&gbit) > 0 && oe < no) {
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uint16_t x = get_vlc2(&gbit, vlc->table, 12, 3);
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if (x == run_sym) {
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int run = get_bits(&gbit, 8);
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uint16_t fill;
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if (oe == 0 || oe + run > no)
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return AVERROR_INVALIDDATA;
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fill = out[oe - 1];
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while (run-- > 0)
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out[oe++] = fill;
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} else {
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out[oe++] = x;
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}
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}
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return 0;
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}
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static int huf_uncompress(const EXRContext *s,
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EXRThreadData *td,
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GetByteContext *gb,
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uint16_t *dst, int dst_size)
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{
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int32_t im, iM;
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uint32_t nBits;
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int ret;
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im = bytestream2_get_le32(gb);
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iM = bytestream2_get_le32(gb);
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bytestream2_skip(gb, 4);
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nBits = bytestream2_get_le32(gb);
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if (im < 0 || im >= HUF_ENCSIZE ||
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iM < 0 || iM >= HUF_ENCSIZE)
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return AVERROR_INVALIDDATA;
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bytestream2_skip(gb, 4);
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if (!td->freq)
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td->freq = av_malloc_array(HUF_ENCSIZE, sizeof(*td->freq));
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if (!td->he)
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td->he = av_calloc(HUF_ENCSIZE, sizeof(*td->he));
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if (!td->freq || !td->he) {
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ret = AVERROR(ENOMEM);
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return ret;
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}
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memset(td->freq, 0, sizeof(*td->freq) * HUF_ENCSIZE);
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if ((ret = huf_unpack_enc_table(gb, im, iM, td->freq)) < 0)
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return ret;
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if (nBits > 8 * bytestream2_get_bytes_left(gb)) {
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ret = AVERROR_INVALIDDATA;
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return ret;
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}
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if ((ret = huf_build_dec_table(s, td, im, iM)) < 0)
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return ret;
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return huf_decode(&td->vlc, gb, nBits, td->run_sym, dst_size, dst);
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}
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static inline void wdec14(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
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{
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int16_t ls = l;
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int16_t hs = h;
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int hi = hs;
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int ai = ls + (hi & 1) + (hi >> 1);
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int16_t as = ai;
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int16_t bs = ai - hi;
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*a = as;
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*b = bs;
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}
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#define NBITS 16
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#define A_OFFSET (1 << (NBITS - 1))
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#define MOD_MASK ((1 << NBITS) - 1)
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static inline void wdec16(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
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{
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int m = l;
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int d = h;
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int bb = (m - (d >> 1)) & MOD_MASK;
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int aa = (d + bb - A_OFFSET) & MOD_MASK;
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*b = bb;
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*a = aa;
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}
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static void wav_decode(uint16_t *in, int nx, int ox,
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int ny, int oy, uint16_t mx)
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{
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int w14 = (mx < (1 << 14));
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int n = (nx > ny) ? ny : nx;
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int p = 1;
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int p2;
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while (p <= n)
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p <<= 1;
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p >>= 1;
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p2 = p;
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p >>= 1;
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while (p >= 1) {
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uint16_t *py = in;
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uint16_t *ey = in + oy * (ny - p2);
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uint16_t i00, i01, i10, i11;
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int oy1 = oy * p;
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int oy2 = oy * p2;
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int ox1 = ox * p;
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int ox2 = ox * p2;
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for (; py <= ey; py += oy2) {
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uint16_t *px = py;
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uint16_t *ex = py + ox * (nx - p2);
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for (; px <= ex; px += ox2) {
|
|
uint16_t *p01 = px + ox1;
|
|
uint16_t *p10 = px + oy1;
|
|
uint16_t *p11 = p10 + ox1;
|
|
|
|
if (w14) {
|
|
wdec14(*px, *p10, &i00, &i10);
|
|
wdec14(*p01, *p11, &i01, &i11);
|
|
wdec14(i00, i01, px, p01);
|
|
wdec14(i10, i11, p10, p11);
|
|
} else {
|
|
wdec16(*px, *p10, &i00, &i10);
|
|
wdec16(*p01, *p11, &i01, &i11);
|
|
wdec16(i00, i01, px, p01);
|
|
wdec16(i10, i11, p10, p11);
|
|
}
|
|
}
|
|
|
|
if (nx & p) {
|
|
uint16_t *p10 = px + oy1;
|
|
|
|
if (w14)
|
|
wdec14(*px, *p10, &i00, p10);
|
|
else
|
|
wdec16(*px, *p10, &i00, p10);
|
|
|
|
*px = i00;
|
|
}
|
|
}
|
|
|
|
if (ny & p) {
|
|
uint16_t *px = py;
|
|
uint16_t *ex = py + ox * (nx - p2);
|
|
|
|
for (; px <= ex; px += ox2) {
|
|
uint16_t *p01 = px + ox1;
|
|
|
|
if (w14)
|
|
wdec14(*px, *p01, &i00, p01);
|
|
else
|
|
wdec16(*px, *p01, &i00, p01);
|
|
|
|
*px = i00;
|
|
}
|
|
}
|
|
|
|
p2 = p;
|
|
p >>= 1;
|
|
}
|
|
}
|
|
|
|
static int piz_uncompress(const EXRContext *s, const uint8_t *src, int ssize,
|
|
int dsize, EXRThreadData *td)
|
|
{
|
|
GetByteContext gb;
|
|
uint16_t maxval, min_non_zero, max_non_zero;
|
|
uint16_t *ptr;
|
|
uint16_t *tmp = (uint16_t *)td->tmp;
|
|
uint16_t *out;
|
|
uint16_t *in;
|
|
int ret, i, j;
|
|
int pixel_half_size;/* 1 for half, 2 for float and uint32 */
|
|
EXRChannel *channel;
|
|
int tmp_offset;
|
|
|
|
if (!td->bitmap)
|
|
td->bitmap = av_malloc(BITMAP_SIZE);
|
|
if (!td->lut)
|
|
td->lut = av_malloc(1 << 17);
|
|
if (!td->bitmap || !td->lut) {
|
|
av_freep(&td->bitmap);
|
|
av_freep(&td->lut);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
bytestream2_init(&gb, src, ssize);
|
|
min_non_zero = bytestream2_get_le16(&gb);
|
|
max_non_zero = bytestream2_get_le16(&gb);
|
|
|
|
if (max_non_zero >= BITMAP_SIZE)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
memset(td->bitmap, 0, FFMIN(min_non_zero, BITMAP_SIZE));
|
|
if (min_non_zero <= max_non_zero)
|
|
bytestream2_get_buffer(&gb, td->bitmap + min_non_zero,
|
|
max_non_zero - min_non_zero + 1);
|
|
memset(td->bitmap + max_non_zero + 1, 0, BITMAP_SIZE - max_non_zero - 1);
|
|
|
|
maxval = reverse_lut(td->bitmap, td->lut);
|
|
|
|
bytestream2_skip(&gb, 4);
|
|
ret = huf_uncompress(s, td, &gb, tmp, dsize / sizeof(uint16_t));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ptr = tmp;
|
|
for (i = 0; i < s->nb_channels; i++) {
|
|
channel = &s->channels[i];
|
|
|
|
if (channel->pixel_type == EXR_HALF)
|
|
pixel_half_size = 1;
|
|
else
|
|
pixel_half_size = 2;
|
|
|
|
for (j = 0; j < pixel_half_size; j++)
|
|
wav_decode(ptr + j, td->xsize, pixel_half_size, td->ysize,
|
|
td->xsize * pixel_half_size, maxval);
|
|
ptr += td->xsize * td->ysize * pixel_half_size;
|
|
}
|
|
|
|
apply_lut(td->lut, tmp, dsize / sizeof(uint16_t));
|
|
|
|
out = (uint16_t *)td->uncompressed_data;
|
|
for (i = 0; i < td->ysize; i++) {
|
|
tmp_offset = 0;
|
|
for (j = 0; j < s->nb_channels; j++) {
|
|
channel = &s->channels[j];
|
|
if (channel->pixel_type == EXR_HALF)
|
|
pixel_half_size = 1;
|
|
else
|
|
pixel_half_size = 2;
|
|
|
|
in = tmp + tmp_offset * td->xsize * td->ysize + i * td->xsize * pixel_half_size;
|
|
tmp_offset += pixel_half_size;
|
|
|
|
#if HAVE_BIGENDIAN
|
|
s->bbdsp.bswap16_buf(out, in, td->xsize * pixel_half_size);
|
|
#else
|
|
memcpy(out, in, td->xsize * 2 * pixel_half_size);
|
|
#endif
|
|
out += td->xsize * pixel_half_size;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pxr24_uncompress(const EXRContext *s, const uint8_t *src,
|
|
int compressed_size, int uncompressed_size,
|
|
EXRThreadData *td)
|
|
{
|
|
unsigned long dest_len, expected_len = 0;
|
|
const uint8_t *in = td->tmp;
|
|
uint8_t *out;
|
|
int c, i, j;
|
|
|
|
for (i = 0; i < s->nb_channels; i++) {
|
|
if (s->channels[i].pixel_type == EXR_FLOAT) {
|
|
expected_len += (td->xsize * td->ysize * 3);/* PRX 24 store float in 24 bit instead of 32 */
|
|
} else if (s->channels[i].pixel_type == EXR_HALF) {
|
|
expected_len += (td->xsize * td->ysize * 2);
|
|
} else {//UINT 32
|
|
expected_len += (td->xsize * td->ysize * 4);
|
|
}
|
|
}
|
|
|
|
dest_len = expected_len;
|
|
|
|
if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK) {
|
|
return AVERROR_INVALIDDATA;
|
|
} else if (dest_len != expected_len) {
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
out = td->uncompressed_data;
|
|
for (i = 0; i < td->ysize; i++)
|
|
for (c = 0; c < s->nb_channels; c++) {
|
|
EXRChannel *channel = &s->channels[c];
|
|
const uint8_t *ptr[4];
|
|
uint32_t pixel = 0;
|
|
|
|
switch (channel->pixel_type) {
|
|
case EXR_FLOAT:
|
|
ptr[0] = in;
|
|
ptr[1] = ptr[0] + td->xsize;
|
|
ptr[2] = ptr[1] + td->xsize;
|
|
in = ptr[2] + td->xsize;
|
|
|
|
for (j = 0; j < td->xsize; ++j) {
|
|
uint32_t diff = ((unsigned)*(ptr[0]++) << 24) |
|
|
(*(ptr[1]++) << 16) |
|
|
(*(ptr[2]++) << 8);
|
|
pixel += diff;
|
|
bytestream_put_le32(&out, pixel);
|
|
}
|
|
break;
|
|
case EXR_HALF:
|
|
ptr[0] = in;
|
|
ptr[1] = ptr[0] + td->xsize;
|
|
in = ptr[1] + td->xsize;
|
|
for (j = 0; j < td->xsize; j++) {
|
|
uint32_t diff = (*(ptr[0]++) << 8) | *(ptr[1]++);
|
|
|
|
pixel += diff;
|
|
bytestream_put_le16(&out, pixel);
|
|
}
|
|
break;
|
|
case EXR_UINT:
|
|
ptr[0] = in;
|
|
ptr[1] = ptr[0] + s->xdelta;
|
|
ptr[2] = ptr[1] + s->xdelta;
|
|
ptr[3] = ptr[2] + s->xdelta;
|
|
in = ptr[3] + s->xdelta;
|
|
|
|
for (j = 0; j < s->xdelta; ++j) {
|
|
uint32_t diff = ((uint32_t)*(ptr[0]++) << 24) |
|
|
(*(ptr[1]++) << 16) |
|
|
(*(ptr[2]++) << 8 ) |
|
|
(*(ptr[3]++));
|
|
pixel += diff;
|
|
bytestream_put_le32(&out, pixel);
|
|
}
|
|
break;
|
|
default:
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void unpack_14(const uint8_t b[14], uint16_t s[16])
|
|
{
|
|
unsigned short shift = (b[ 2] >> 2) & 15;
|
|
unsigned short bias = (0x20 << shift);
|
|
int i;
|
|
|
|
s[ 0] = (b[0] << 8) | b[1];
|
|
|
|
s[ 4] = s[ 0] + ((((b[ 2] << 4) | (b[ 3] >> 4)) & 0x3f) << shift) - bias;
|
|
s[ 8] = s[ 4] + ((((b[ 3] << 2) | (b[ 4] >> 6)) & 0x3f) << shift) - bias;
|
|
s[12] = s[ 8] + ((b[ 4] & 0x3f) << shift) - bias;
|
|
|
|
s[ 1] = s[ 0] + ((b[ 5] >> 2) << shift) - bias;
|
|
s[ 5] = s[ 4] + ((((b[ 5] << 4) | (b[ 6] >> 4)) & 0x3f) << shift) - bias;
|
|
s[ 9] = s[ 8] + ((((b[ 6] << 2) | (b[ 7] >> 6)) & 0x3f) << shift) - bias;
|
|
s[13] = s[12] + ((b[ 7] & 0x3f) << shift) - bias;
|
|
|
|
s[ 2] = s[ 1] + ((b[ 8] >> 2) << shift) - bias;
|
|
s[ 6] = s[ 5] + ((((b[ 8] << 4) | (b[ 9] >> 4)) & 0x3f) << shift) - bias;
|
|
s[10] = s[ 9] + ((((b[ 9] << 2) | (b[10] >> 6)) & 0x3f) << shift) - bias;
|
|
s[14] = s[13] + ((b[10] & 0x3f) << shift) - bias;
|
|
|
|
s[ 3] = s[ 2] + ((b[11] >> 2) << shift) - bias;
|
|
s[ 7] = s[ 6] + ((((b[11] << 4) | (b[12] >> 4)) & 0x3f) << shift) - bias;
|
|
s[11] = s[10] + ((((b[12] << 2) | (b[13] >> 6)) & 0x3f) << shift) - bias;
|
|
s[15] = s[14] + ((b[13] & 0x3f) << shift) - bias;
|
|
|
|
for (i = 0; i < 16; ++i) {
|
|
if (s[i] & 0x8000)
|
|
s[i] &= 0x7fff;
|
|
else
|
|
s[i] = ~s[i];
|
|
}
|
|
}
|
|
|
|
static void unpack_3(const uint8_t b[3], uint16_t s[16])
|
|
{
|
|
int i;
|
|
|
|
s[0] = (b[0] << 8) | b[1];
|
|
|
|
if (s[0] & 0x8000)
|
|
s[0] &= 0x7fff;
|
|
else
|
|
s[0] = ~s[0];
|
|
|
|
for (i = 1; i < 16; i++)
|
|
s[i] = s[0];
|
|
}
|
|
|
|
|
|
static int b44_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
|
|
int uncompressed_size, EXRThreadData *td) {
|
|
const int8_t *sr = src;
|
|
int stay_to_uncompress = compressed_size;
|
|
int nb_b44_block_w, nb_b44_block_h;
|
|
int index_tl_x, index_tl_y, index_out, index_tmp;
|
|
uint16_t tmp_buffer[16]; /* B44 use 4x4 half float pixel */
|
|
int c, iY, iX, y, x;
|
|
int target_channel_offset = 0;
|
|
|
|
/* calc B44 block count */
|
|
nb_b44_block_w = td->xsize / 4;
|
|
if ((td->xsize % 4) != 0)
|
|
nb_b44_block_w++;
|
|
|
|
nb_b44_block_h = td->ysize / 4;
|
|
if ((td->ysize % 4) != 0)
|
|
nb_b44_block_h++;
|
|
|
|
for (c = 0; c < s->nb_channels; c++) {
|
|
if (s->channels[c].pixel_type == EXR_HALF) {/* B44 only compress half float data */
|
|
for (iY = 0; iY < nb_b44_block_h; iY++) {
|
|
for (iX = 0; iX < nb_b44_block_w; iX++) {/* For each B44 block */
|
|
if (stay_to_uncompress < 3) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Not enough data for B44A block: %d", stay_to_uncompress);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (src[compressed_size - stay_to_uncompress + 2] == 0xfc) { /* B44A block */
|
|
unpack_3(sr, tmp_buffer);
|
|
sr += 3;
|
|
stay_to_uncompress -= 3;
|
|
} else {/* B44 Block */
|
|
if (stay_to_uncompress < 14) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Not enough data for B44 block: %d", stay_to_uncompress);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
unpack_14(sr, tmp_buffer);
|
|
sr += 14;
|
|
stay_to_uncompress -= 14;
|
|
}
|
|
|
|
/* copy data to uncompress buffer (B44 block can exceed target resolution)*/
|
|
index_tl_x = iX * 4;
|
|
index_tl_y = iY * 4;
|
|
|
|
for (y = index_tl_y; y < FFMIN(index_tl_y + 4, td->ysize); y++) {
|
|
for (x = index_tl_x; x < FFMIN(index_tl_x + 4, td->xsize); x++) {
|
|
index_out = target_channel_offset * td->xsize + y * td->channel_line_size + 2 * x;
|
|
index_tmp = (y-index_tl_y) * 4 + (x-index_tl_x);
|
|
td->uncompressed_data[index_out] = tmp_buffer[index_tmp] & 0xff;
|
|
td->uncompressed_data[index_out + 1] = tmp_buffer[index_tmp] >> 8;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
target_channel_offset += 2;
|
|
} else {/* Float or UINT 32 channel */
|
|
if (stay_to_uncompress < td->ysize * td->xsize * 4) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Not enough data for uncompress channel: %d", stay_to_uncompress);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
for (y = 0; y < td->ysize; y++) {
|
|
index_out = target_channel_offset * td->xsize + y * td->channel_line_size;
|
|
memcpy(&td->uncompressed_data[index_out], sr, td->xsize * 4);
|
|
sr += td->xsize * 4;
|
|
}
|
|
target_channel_offset += 4;
|
|
|
|
stay_to_uncompress -= td->ysize * td->xsize * 4;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ac_uncompress(const EXRContext *s, GetByteContext *gb, float *block)
|
|
{
|
|
int ret = 0, n = 1;
|
|
|
|
while (n < 64) {
|
|
uint16_t val = bytestream2_get_ne16(gb);
|
|
|
|
if (val == 0xff00) {
|
|
n = 64;
|
|
} else if ((val >> 8) == 0xff) {
|
|
n += val & 0xff;
|
|
} else {
|
|
ret = n;
|
|
block[ff_zigzag_direct[n]] = av_int2float(half2float(val, &s->h2f_tables));
|
|
n++;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void idct_1d(float *blk, int step)
|
|
{
|
|
const float a = .5f * cosf( M_PI / 4.f);
|
|
const float b = .5f * cosf( M_PI / 16.f);
|
|
const float c = .5f * cosf( M_PI / 8.f);
|
|
const float d = .5f * cosf(3.f*M_PI / 16.f);
|
|
const float e = .5f * cosf(5.f*M_PI / 16.f);
|
|
const float f = .5f * cosf(3.f*M_PI / 8.f);
|
|
const float g = .5f * cosf(7.f*M_PI / 16.f);
|
|
|
|
float alpha[4], beta[4], theta[4], gamma[4];
|
|
|
|
alpha[0] = c * blk[2 * step];
|
|
alpha[1] = f * blk[2 * step];
|
|
alpha[2] = c * blk[6 * step];
|
|
alpha[3] = f * blk[6 * step];
|
|
|
|
beta[0] = b * blk[1 * step] + d * blk[3 * step] + e * blk[5 * step] + g * blk[7 * step];
|
|
beta[1] = d * blk[1 * step] - g * blk[3 * step] - b * blk[5 * step] - e * blk[7 * step];
|
|
beta[2] = e * blk[1 * step] - b * blk[3 * step] + g * blk[5 * step] + d * blk[7 * step];
|
|
beta[3] = g * blk[1 * step] - e * blk[3 * step] + d * blk[5 * step] - b * blk[7 * step];
|
|
|
|
theta[0] = a * (blk[0 * step] + blk[4 * step]);
|
|
theta[3] = a * (blk[0 * step] - blk[4 * step]);
|
|
|
|
theta[1] = alpha[0] + alpha[3];
|
|
theta[2] = alpha[1] - alpha[2];
|
|
|
|
gamma[0] = theta[0] + theta[1];
|
|
gamma[1] = theta[3] + theta[2];
|
|
gamma[2] = theta[3] - theta[2];
|
|
gamma[3] = theta[0] - theta[1];
|
|
|
|
blk[0 * step] = gamma[0] + beta[0];
|
|
blk[1 * step] = gamma[1] + beta[1];
|
|
blk[2 * step] = gamma[2] + beta[2];
|
|
blk[3 * step] = gamma[3] + beta[3];
|
|
|
|
blk[4 * step] = gamma[3] - beta[3];
|
|
blk[5 * step] = gamma[2] - beta[2];
|
|
blk[6 * step] = gamma[1] - beta[1];
|
|
blk[7 * step] = gamma[0] - beta[0];
|
|
}
|
|
|
|
static void dct_inverse(float *block)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
idct_1d(block + i, 8);
|
|
|
|
for (int i = 0; i < 8; i++) {
|
|
idct_1d(block, 1);
|
|
block += 8;
|
|
}
|
|
}
|
|
|
|
static void convert(float y, float u, float v,
|
|
float *b, float *g, float *r)
|
|
{
|
|
*r = y + 1.5747f * v;
|
|
*g = y - 0.1873f * u - 0.4682f * v;
|
|
*b = y + 1.8556f * u;
|
|
}
|
|
|
|
static float to_linear(float x, float scale)
|
|
{
|
|
float ax = fabsf(x);
|
|
|
|
if (ax <= 1.f) {
|
|
return FFSIGN(x) * powf(ax, 2.2f * scale);
|
|
} else {
|
|
const float log_base = expf(2.2f * scale);
|
|
|
|
return FFSIGN(x) * powf(log_base, ax - 1.f);
|
|
}
|
|
}
|
|
|
|
static int dwa_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
|
|
int uncompressed_size, EXRThreadData *td)
|
|
{
|
|
int64_t version, lo_usize, lo_size;
|
|
int64_t ac_size, dc_size, rle_usize, rle_csize, rle_raw_size;
|
|
int64_t ac_count, dc_count, ac_compression;
|
|
const int dc_w = td->xsize >> 3;
|
|
const int dc_h = td->ysize >> 3;
|
|
GetByteContext gb, agb;
|
|
int skip, ret;
|
|
|
|
if (compressed_size <= 88)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
version = AV_RL64(src + 0);
|
|
if (version != 2)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
lo_usize = AV_RL64(src + 8);
|
|
lo_size = AV_RL64(src + 16);
|
|
ac_size = AV_RL64(src + 24);
|
|
dc_size = AV_RL64(src + 32);
|
|
rle_csize = AV_RL64(src + 40);
|
|
rle_usize = AV_RL64(src + 48);
|
|
rle_raw_size = AV_RL64(src + 56);
|
|
ac_count = AV_RL64(src + 64);
|
|
dc_count = AV_RL64(src + 72);
|
|
ac_compression = AV_RL64(src + 80);
|
|
|
|
if ( compressed_size < (uint64_t)(lo_size | ac_size | dc_size | rle_csize) || compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize
|
|
|| ac_count > (uint64_t)INT_MAX/2
|
|
)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
bytestream2_init(&gb, src + 88, compressed_size - 88);
|
|
skip = bytestream2_get_le16(&gb);
|
|
if (skip < 2)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
bytestream2_skip(&gb, skip - 2);
|
|
|
|
if (lo_size > 0) {
|
|
if (lo_usize > uncompressed_size)
|
|
return AVERROR_INVALIDDATA;
|
|
bytestream2_skip(&gb, lo_size);
|
|
}
|
|
|
|
if (ac_size > 0) {
|
|
unsigned long dest_len;
|
|
GetByteContext agb = gb;
|
|
|
|
if (ac_count > 3LL * td->xsize * s->scan_lines_per_block)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
dest_len = ac_count * 2LL;
|
|
|
|
av_fast_padded_malloc(&td->ac_data, &td->ac_size, dest_len);
|
|
if (!td->ac_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
switch (ac_compression) {
|
|
case 0:
|
|
ret = huf_uncompress(s, td, &agb, (int16_t *)td->ac_data, ac_count);
|
|
if (ret < 0)
|
|
return ret;
|
|
break;
|
|
case 1:
|
|
if (uncompress(td->ac_data, &dest_len, agb.buffer, ac_size) != Z_OK ||
|
|
dest_len != ac_count * 2LL)
|
|
return AVERROR_INVALIDDATA;
|
|
break;
|
|
default:
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
bytestream2_skip(&gb, ac_size);
|
|
}
|
|
|
|
{
|
|
unsigned long dest_len;
|
|
GetByteContext agb = gb;
|
|
|
|
if (dc_count != dc_w * dc_h * 3)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
dest_len = dc_count * 2LL;
|
|
|
|
av_fast_padded_malloc(&td->dc_data, &td->dc_size, FFALIGN(dest_len, 64) * 2);
|
|
if (!td->dc_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (uncompress(td->dc_data + FFALIGN(dest_len, 64), &dest_len, agb.buffer, dc_size) != Z_OK ||
|
|
(dest_len != dc_count * 2LL))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
s->dsp.predictor(td->dc_data + FFALIGN(dest_len, 64), dest_len);
|
|
s->dsp.reorder_pixels(td->dc_data, td->dc_data + FFALIGN(dest_len, 64), dest_len);
|
|
|
|
bytestream2_skip(&gb, dc_size);
|
|
}
|
|
|
|
if (rle_raw_size > 0 && rle_csize > 0 && rle_usize > 0) {
|
|
unsigned long dest_len = rle_usize;
|
|
|
|
av_fast_padded_malloc(&td->rle_data, &td->rle_size, rle_usize);
|
|
if (!td->rle_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
av_fast_padded_malloc(&td->rle_raw_data, &td->rle_raw_size, rle_raw_size);
|
|
if (!td->rle_raw_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (uncompress(td->rle_data, &dest_len, gb.buffer, rle_csize) != Z_OK ||
|
|
(dest_len != rle_usize))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
ret = rle(td->rle_raw_data, td->rle_data, rle_usize, rle_raw_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
bytestream2_skip(&gb, rle_csize);
|
|
}
|
|
|
|
bytestream2_init(&agb, td->ac_data, ac_count * 2);
|
|
|
|
for (int y = 0; y < td->ysize; y += 8) {
|
|
for (int x = 0; x < td->xsize; x += 8) {
|
|
memset(td->block, 0, sizeof(td->block));
|
|
|
|
for (int j = 0; j < 3; j++) {
|
|
float *block = td->block[j];
|
|
const int idx = (x >> 3) + (y >> 3) * dc_w + dc_w * dc_h * j;
|
|
uint16_t *dc = (uint16_t *)td->dc_data;
|
|
union av_intfloat32 dc_val;
|
|
|
|
dc_val.i = half2float(dc[idx], &s->h2f_tables);
|
|
|
|
block[0] = dc_val.f;
|
|
ac_uncompress(s, &agb, block);
|
|
dct_inverse(block);
|
|
}
|
|
|
|
{
|
|
const float scale = s->pixel_type == EXR_FLOAT ? 2.f : 1.f;
|
|
const int o = s->nb_channels == 4;
|
|
float *bo = ((float *)td->uncompressed_data) +
|
|
y * td->xsize * s->nb_channels + td->xsize * (o + 0) + x;
|
|
float *go = ((float *)td->uncompressed_data) +
|
|
y * td->xsize * s->nb_channels + td->xsize * (o + 1) + x;
|
|
float *ro = ((float *)td->uncompressed_data) +
|
|
y * td->xsize * s->nb_channels + td->xsize * (o + 2) + x;
|
|
float *yb = td->block[0];
|
|
float *ub = td->block[1];
|
|
float *vb = td->block[2];
|
|
|
|
for (int yy = 0; yy < 8; yy++) {
|
|
for (int xx = 0; xx < 8; xx++) {
|
|
const int idx = xx + yy * 8;
|
|
|
|
convert(yb[idx], ub[idx], vb[idx], &bo[xx], &go[xx], &ro[xx]);
|
|
|
|
bo[xx] = to_linear(bo[xx], scale);
|
|
go[xx] = to_linear(go[xx], scale);
|
|
ro[xx] = to_linear(ro[xx], scale);
|
|
}
|
|
|
|
bo += td->xsize * s->nb_channels;
|
|
go += td->xsize * s->nb_channels;
|
|
ro += td->xsize * s->nb_channels;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (s->nb_channels < 4)
|
|
return 0;
|
|
|
|
for (int y = 0; y < td->ysize && td->rle_raw_data; y++) {
|
|
uint32_t *ao = ((uint32_t *)td->uncompressed_data) + y * td->xsize * s->nb_channels;
|
|
uint8_t *ai0 = td->rle_raw_data + y * td->xsize;
|
|
uint8_t *ai1 = td->rle_raw_data + y * td->xsize + rle_raw_size / 2;
|
|
|
|
for (int x = 0; x < td->xsize; x++) {
|
|
uint16_t ha = ai0[x] | (ai1[x] << 8);
|
|
|
|
ao[x] = half2float(ha, &s->h2f_tables);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_block(AVCodecContext *avctx, void *tdata,
|
|
int jobnr, int threadnr)
|
|
{
|
|
const EXRContext *s = avctx->priv_data;
|
|
AVFrame *const p = s->picture;
|
|
EXRThreadData *td = &s->thread_data[threadnr];
|
|
const uint8_t *channel_buffer[4] = { 0 };
|
|
const uint8_t *buf = s->buf;
|
|
uint64_t line_offset, uncompressed_size;
|
|
uint8_t *ptr;
|
|
uint32_t data_size;
|
|
int line, col = 0;
|
|
uint64_t tile_x, tile_y, tile_level_x, tile_level_y;
|
|
const uint8_t *src;
|
|
int step = s->desc->flags & AV_PIX_FMT_FLAG_FLOAT ? 4 : 2 * s->desc->nb_components;
|
|
int bxmin = 0, axmax = 0, window_xoffset = 0;
|
|
int window_xmin, window_xmax, window_ymin, window_ymax;
|
|
int data_xoffset, data_yoffset, data_window_offset, xsize, ysize;
|
|
int i, x, buf_size = s->buf_size;
|
|
int c, rgb_channel_count;
|
|
float one_gamma = 1.0f / s->gamma;
|
|
avpriv_trc_function trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
|
|
int ret;
|
|
|
|
line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
|
|
|
|
if (s->is_tile) {
|
|
if (buf_size < 20 || line_offset > buf_size - 20)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
src = buf + line_offset + 20;
|
|
if (s->is_multipart)
|
|
src += 4;
|
|
|
|
tile_x = AV_RL32(src - 20);
|
|
tile_y = AV_RL32(src - 16);
|
|
tile_level_x = AV_RL32(src - 12);
|
|
tile_level_y = AV_RL32(src - 8);
|
|
|
|
data_size = AV_RL32(src - 4);
|
|
if (data_size <= 0 || data_size > buf_size - line_offset - 20)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (tile_level_x || tile_level_y) { /* tile level, is not the full res level */
|
|
avpriv_report_missing_feature(s->avctx, "Subres tile before full res tile");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (tile_x && s->tile_attr.xSize + (int64_t)FFMAX(s->xmin, 0) >= INT_MAX / tile_x )
|
|
return AVERROR_INVALIDDATA;
|
|
if (tile_y && s->tile_attr.ySize + (int64_t)FFMAX(s->ymin, 0) >= INT_MAX / tile_y )
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
line = s->ymin + s->tile_attr.ySize * tile_y;
|
|
col = s->tile_attr.xSize * tile_x;
|
|
|
|
if (line < s->ymin || line > s->ymax ||
|
|
s->xmin + col < s->xmin || s->xmin + col > s->xmax)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize);
|
|
td->xsize = FFMIN(s->tile_attr.xSize, s->xdelta - tile_x * s->tile_attr.xSize);
|
|
|
|
if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX ||
|
|
av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
|
|
uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
|
|
} else {
|
|
if (buf_size < 8 || line_offset > buf_size - 8)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
src = buf + line_offset + 8;
|
|
if (s->is_multipart)
|
|
src += 4;
|
|
line = AV_RL32(src - 8);
|
|
|
|
if (line < s->ymin || line > s->ymax)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
data_size = AV_RL32(src - 4);
|
|
if (data_size <= 0 || data_size > buf_size - line_offset - 8)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */
|
|
td->xsize = s->xdelta;
|
|
|
|
if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX ||
|
|
av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
|
|
uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
|
|
|
|
if ((s->compression == EXR_RAW && (data_size != uncompressed_size ||
|
|
line_offset > buf_size - uncompressed_size)) ||
|
|
(s->compression != EXR_RAW && (data_size > uncompressed_size ||
|
|
line_offset > buf_size - data_size))) {
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
|
|
window_xmin = FFMIN(avctx->width, FFMAX(0, s->xmin + col));
|
|
window_xmax = FFMIN(avctx->width, FFMAX(0, s->xmin + col + td->xsize));
|
|
window_ymin = FFMIN(avctx->height, FFMAX(0, line ));
|
|
window_ymax = FFMIN(avctx->height, FFMAX(0, line + td->ysize));
|
|
xsize = window_xmax - window_xmin;
|
|
ysize = window_ymax - window_ymin;
|
|
|
|
/* tile or scanline not visible skip decoding */
|
|
if (xsize <= 0 || ysize <= 0)
|
|
return 0;
|
|
|
|
/* is the first tile or is a scanline */
|
|
if(col == 0) {
|
|
window_xmin = 0;
|
|
/* pixels to add at the left of the display window */
|
|
window_xoffset = FFMAX(0, s->xmin);
|
|
/* bytes to add at the left of the display window */
|
|
bxmin = window_xoffset * step;
|
|
}
|
|
|
|
/* is the last tile or is a scanline */
|
|
if(col + td->xsize == s->xdelta) {
|
|
window_xmax = avctx->width;
|
|
/* bytes to add at the right of the display window */
|
|
axmax = FFMAX(0, (avctx->width - (s->xmax + 1))) * step;
|
|
}
|
|
|
|
if (avctx->max_pixels && uncompressed_size > avctx->max_pixels * 16LL)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (data_size < uncompressed_size || s->is_tile) { /* td->tmp is use for tile reorganization */
|
|
av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
|
|
if (!td->tmp)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (data_size < uncompressed_size) {
|
|
av_fast_padded_malloc(&td->uncompressed_data,
|
|
&td->uncompressed_size, uncompressed_size + 64);/* Force 64 padding for AVX2 reorder_pixels dst */
|
|
|
|
if (!td->uncompressed_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = AVERROR_INVALIDDATA;
|
|
switch (s->compression) {
|
|
case EXR_ZIP1:
|
|
case EXR_ZIP16:
|
|
ret = zip_uncompress(s, src, data_size, uncompressed_size, td);
|
|
break;
|
|
case EXR_PIZ:
|
|
ret = piz_uncompress(s, src, data_size, uncompressed_size, td);
|
|
break;
|
|
case EXR_PXR24:
|
|
ret = pxr24_uncompress(s, src, data_size, uncompressed_size, td);
|
|
break;
|
|
case EXR_RLE:
|
|
ret = rle_uncompress(s, src, data_size, uncompressed_size, td);
|
|
break;
|
|
case EXR_B44:
|
|
case EXR_B44A:
|
|
ret = b44_uncompress(s, src, data_size, uncompressed_size, td);
|
|
break;
|
|
case EXR_DWAA:
|
|
case EXR_DWAB:
|
|
ret = dwa_uncompress(s, src, data_size, uncompressed_size, td);
|
|
break;
|
|
}
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "decode_block() failed.\n");
|
|
return ret;
|
|
}
|
|
src = td->uncompressed_data;
|
|
}
|
|
|
|
/* offsets to crop data outside display window */
|
|
data_xoffset = FFABS(FFMIN(0, s->xmin + col)) * (s->pixel_type == EXR_HALF ? 2 : 4);
|
|
data_yoffset = FFABS(FFMIN(0, line));
|
|
data_window_offset = (data_yoffset * td->channel_line_size) + data_xoffset;
|
|
|
|
if (!s->is_luma) {
|
|
channel_buffer[0] = src + (td->xsize * s->channel_offsets[0]) + data_window_offset;
|
|
channel_buffer[1] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
|
|
channel_buffer[2] = src + (td->xsize * s->channel_offsets[2]) + data_window_offset;
|
|
rgb_channel_count = 3;
|
|
} else { /* put y data in the first channel_buffer */
|
|
channel_buffer[0] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
|
|
rgb_channel_count = 1;
|
|
}
|
|
if (s->channel_offsets[3] >= 0)
|
|
channel_buffer[3] = src + (td->xsize * s->channel_offsets[3]) + data_window_offset;
|
|
|
|
if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
|
|
/* todo: change this when a floating point pixel format with luma with alpha is implemented */
|
|
int channel_count = s->channel_offsets[3] >= 0 ? 4 : rgb_channel_count;
|
|
if (s->is_luma) {
|
|
channel_buffer[1] = channel_buffer[0];
|
|
channel_buffer[2] = channel_buffer[0];
|
|
}
|
|
|
|
for (c = 0; c < channel_count; c++) {
|
|
int plane = s->desc->comp[c].plane;
|
|
ptr = p->data[plane] + window_ymin * p->linesize[plane] + (window_xmin * 4);
|
|
|
|
for (i = 0; i < ysize; i++, ptr += p->linesize[plane]) {
|
|
const uint8_t *src;
|
|
union av_intfloat32 *ptr_x;
|
|
|
|
src = channel_buffer[c];
|
|
ptr_x = (union av_intfloat32 *)ptr;
|
|
|
|
// Zero out the start if xmin is not 0
|
|
memset(ptr_x, 0, bxmin);
|
|
ptr_x += window_xoffset;
|
|
|
|
if (s->pixel_type == EXR_FLOAT ||
|
|
s->compression == EXR_DWAA ||
|
|
s->compression == EXR_DWAB) {
|
|
// 32-bit
|
|
union av_intfloat32 t;
|
|
if (trc_func && c < 3) {
|
|
for (x = 0; x < xsize; x++) {
|
|
t.i = bytestream_get_le32(&src);
|
|
t.f = trc_func(t.f);
|
|
*ptr_x++ = t;
|
|
}
|
|
} else if (one_gamma != 1.f) {
|
|
for (x = 0; x < xsize; x++) {
|
|
t.i = bytestream_get_le32(&src);
|
|
if (t.f > 0.0f && c < 3) /* avoid negative values */
|
|
t.f = powf(t.f, one_gamma);
|
|
*ptr_x++ = t;
|
|
}
|
|
} else {
|
|
for (x = 0; x < xsize; x++) {
|
|
t.i = bytestream_get_le32(&src);
|
|
*ptr_x++ = t;
|
|
}
|
|
}
|
|
} else if (s->pixel_type == EXR_HALF) {
|
|
// 16-bit
|
|
if (c < 3 || !trc_func) {
|
|
for (x = 0; x < xsize; x++) {
|
|
*ptr_x++ = s->gamma_table[bytestream_get_le16(&src)];
|
|
}
|
|
} else {
|
|
for (x = 0; x < xsize; x++) {
|
|
ptr_x[0].i = half2float(bytestream_get_le16(&src), &s->h2f_tables);
|
|
ptr_x++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Zero out the end if xmax+1 is not w
|
|
memset(ptr_x, 0, axmax);
|
|
channel_buffer[c] += td->channel_line_size;
|
|
}
|
|
}
|
|
} else {
|
|
|
|
av_assert1(s->pixel_type == EXR_UINT);
|
|
ptr = p->data[0] + window_ymin * p->linesize[0] + (window_xmin * s->desc->nb_components * 2);
|
|
|
|
for (i = 0; i < ysize; i++, ptr += p->linesize[0]) {
|
|
|
|
const uint8_t * a;
|
|
const uint8_t *rgb[3];
|
|
uint16_t *ptr_x;
|
|
|
|
for (c = 0; c < rgb_channel_count; c++) {
|
|
rgb[c] = channel_buffer[c];
|
|
}
|
|
|
|
if (channel_buffer[3])
|
|
a = channel_buffer[3];
|
|
|
|
ptr_x = (uint16_t *) ptr;
|
|
|
|
// Zero out the start if xmin is not 0
|
|
memset(ptr_x, 0, bxmin);
|
|
ptr_x += window_xoffset * s->desc->nb_components;
|
|
|
|
for (x = 0; x < xsize; x++) {
|
|
for (c = 0; c < rgb_channel_count; c++) {
|
|
*ptr_x++ = bytestream_get_le32(&rgb[c]) >> 16;
|
|
}
|
|
|
|
if (channel_buffer[3])
|
|
*ptr_x++ = bytestream_get_le32(&a) >> 16;
|
|
}
|
|
|
|
// Zero out the end if xmax+1 is not w
|
|
memset(ptr_x, 0, axmax);
|
|
|
|
channel_buffer[0] += td->channel_line_size;
|
|
channel_buffer[1] += td->channel_line_size;
|
|
channel_buffer[2] += td->channel_line_size;
|
|
if (channel_buffer[3])
|
|
channel_buffer[3] += td->channel_line_size;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void skip_header_chunk(EXRContext *s)
|
|
{
|
|
GetByteContext *gb = &s->gb;
|
|
|
|
while (bytestream2_get_bytes_left(gb) > 0) {
|
|
if (!bytestream2_peek_byte(gb))
|
|
break;
|
|
|
|
// Process unknown variables
|
|
for (int i = 0; i < 2; i++) // value_name and value_type
|
|
while (bytestream2_get_byte(gb) != 0);
|
|
|
|
// Skip variable length
|
|
bytestream2_skip(gb, bytestream2_get_le32(gb));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if the variable name corresponds to its data type.
|
|
*
|
|
* @param s the EXRContext
|
|
* @param value_name name of the variable to check
|
|
* @param value_type type of the variable to check
|
|
* @param minimum_length minimum length of the variable data
|
|
*
|
|
* @return bytes to read containing variable data
|
|
* -1 if variable is not found
|
|
* 0 if buffer ended prematurely
|
|
*/
|
|
static int check_header_variable(EXRContext *s,
|
|
const char *value_name,
|
|
const char *value_type,
|
|
unsigned int minimum_length)
|
|
{
|
|
GetByteContext *gb = &s->gb;
|
|
int var_size = -1;
|
|
|
|
if (bytestream2_get_bytes_left(gb) >= minimum_length &&
|
|
!strcmp(gb->buffer, value_name)) {
|
|
// found value_name, jump to value_type (null terminated strings)
|
|
gb->buffer += strlen(value_name) + 1;
|
|
if (!strcmp(gb->buffer, value_type)) {
|
|
gb->buffer += strlen(value_type) + 1;
|
|
var_size = bytestream2_get_le32(gb);
|
|
// don't go read past boundaries
|
|
if (var_size > bytestream2_get_bytes_left(gb))
|
|
var_size = 0;
|
|
} else {
|
|
// value_type not found, reset the buffer
|
|
gb->buffer -= strlen(value_name) + 1;
|
|
av_log(s->avctx, AV_LOG_WARNING,
|
|
"Unknown data type %s for header variable %s.\n",
|
|
value_type, value_name);
|
|
}
|
|
}
|
|
|
|
return var_size;
|
|
}
|
|
|
|
static int decode_header(EXRContext *s, AVFrame *frame)
|
|
{
|
|
AVDictionary *metadata = NULL;
|
|
GetByteContext *gb = &s->gb;
|
|
int magic_number, version, flags;
|
|
int layer_match = 0;
|
|
int ret;
|
|
int dup_channels = 0;
|
|
|
|
s->current_channel_offset = 0;
|
|
s->xmin = ~0;
|
|
s->xmax = ~0;
|
|
s->ymin = ~0;
|
|
s->ymax = ~0;
|
|
s->xdelta = ~0;
|
|
s->ydelta = ~0;
|
|
s->channel_offsets[0] = -1;
|
|
s->channel_offsets[1] = -1;
|
|
s->channel_offsets[2] = -1;
|
|
s->channel_offsets[3] = -1;
|
|
s->pixel_type = EXR_UNKNOWN;
|
|
s->compression = EXR_UNKN;
|
|
s->nb_channels = 0;
|
|
s->w = 0;
|
|
s->h = 0;
|
|
s->tile_attr.xSize = -1;
|
|
s->tile_attr.ySize = -1;
|
|
s->is_tile = 0;
|
|
s->is_multipart = 0;
|
|
s->is_luma = 0;
|
|
s->current_part = 0;
|
|
|
|
if (bytestream2_get_bytes_left(gb) < 10) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
magic_number = bytestream2_get_le32(gb);
|
|
if (magic_number != 20000630) {
|
|
/* As per documentation of OpenEXR, it is supposed to be
|
|
* int 20000630 little-endian */
|
|
av_log(s->avctx, AV_LOG_ERROR, "Wrong magic number %d.\n", magic_number);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
version = bytestream2_get_byte(gb);
|
|
if (version != 2) {
|
|
avpriv_report_missing_feature(s->avctx, "Version %d", version);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
flags = bytestream2_get_le24(gb);
|
|
|
|
if (flags & 0x02)
|
|
s->is_tile = 1;
|
|
if (flags & 0x10)
|
|
s->is_multipart = 1;
|
|
if (flags & 0x08) {
|
|
avpriv_report_missing_feature(s->avctx, "deep data");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
// Parse the header
|
|
while (bytestream2_get_bytes_left(gb) > 0) {
|
|
int var_size;
|
|
|
|
while (s->is_multipart && s->current_part < s->selected_part &&
|
|
bytestream2_get_bytes_left(gb) > 0) {
|
|
if (bytestream2_peek_byte(gb)) {
|
|
skip_header_chunk(s);
|
|
} else {
|
|
bytestream2_skip(gb, 1);
|
|
if (!bytestream2_peek_byte(gb))
|
|
break;
|
|
}
|
|
bytestream2_skip(gb, 1);
|
|
s->current_part++;
|
|
}
|
|
|
|
if (!bytestream2_peek_byte(gb)) {
|
|
if (!s->is_multipart)
|
|
break;
|
|
bytestream2_skip(gb, 1);
|
|
if (s->current_part == s->selected_part) {
|
|
while (bytestream2_get_bytes_left(gb) > 0) {
|
|
if (bytestream2_peek_byte(gb)) {
|
|
skip_header_chunk(s);
|
|
} else {
|
|
bytestream2_skip(gb, 1);
|
|
if (!bytestream2_peek_byte(gb))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!bytestream2_peek_byte(gb))
|
|
break;
|
|
s->current_part++;
|
|
}
|
|
|
|
if ((var_size = check_header_variable(s, "channels",
|
|
"chlist", 38)) >= 0) {
|
|
GetByteContext ch_gb;
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
bytestream2_init(&ch_gb, gb->buffer, var_size);
|
|
|
|
while (bytestream2_get_bytes_left(&ch_gb) >= 19) {
|
|
EXRChannel *channel;
|
|
enum ExrPixelType current_pixel_type;
|
|
int channel_index = -1;
|
|
int xsub, ysub;
|
|
|
|
if (strcmp(s->layer, "") != 0) {
|
|
if (strncmp(ch_gb.buffer, s->layer, strlen(s->layer)) == 0) {
|
|
layer_match = 1;
|
|
av_log(s->avctx, AV_LOG_INFO,
|
|
"Channel match layer : %s.\n", ch_gb.buffer);
|
|
ch_gb.buffer += strlen(s->layer);
|
|
if (*ch_gb.buffer == '.')
|
|
ch_gb.buffer++; /* skip dot if not given */
|
|
} else {
|
|
layer_match = 0;
|
|
av_log(s->avctx, AV_LOG_INFO,
|
|
"Channel doesn't match layer : %s.\n", ch_gb.buffer);
|
|
}
|
|
} else {
|
|
layer_match = 1;
|
|
}
|
|
|
|
if (layer_match) { /* only search channel if the layer match is valid */
|
|
if (!av_strcasecmp(ch_gb.buffer, "R") ||
|
|
!av_strcasecmp(ch_gb.buffer, "X") ||
|
|
!av_strcasecmp(ch_gb.buffer, "U")) {
|
|
channel_index = 0;
|
|
s->is_luma = 0;
|
|
} else if (!av_strcasecmp(ch_gb.buffer, "G") ||
|
|
!av_strcasecmp(ch_gb.buffer, "V")) {
|
|
channel_index = 1;
|
|
s->is_luma = 0;
|
|
} else if (!av_strcasecmp(ch_gb.buffer, "Y")) {
|
|
channel_index = 1;
|
|
s->is_luma = 1;
|
|
} else if (!av_strcasecmp(ch_gb.buffer, "B") ||
|
|
!av_strcasecmp(ch_gb.buffer, "Z") ||
|
|
!av_strcasecmp(ch_gb.buffer, "W")) {
|
|
channel_index = 2;
|
|
s->is_luma = 0;
|
|
} else if (!av_strcasecmp(ch_gb.buffer, "A")) {
|
|
channel_index = 3;
|
|
} else {
|
|
av_log(s->avctx, AV_LOG_WARNING,
|
|
"Unsupported channel %.256s.\n", ch_gb.buffer);
|
|
}
|
|
}
|
|
|
|
/* skip until you get a 0 */
|
|
while (bytestream2_get_bytes_left(&ch_gb) > 0 &&
|
|
bytestream2_get_byte(&ch_gb))
|
|
continue;
|
|
|
|
if (bytestream2_get_bytes_left(&ch_gb) < 4) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Incomplete header.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
current_pixel_type = bytestream2_get_le32(&ch_gb);
|
|
if (current_pixel_type >= EXR_UNKNOWN) {
|
|
avpriv_report_missing_feature(s->avctx, "Pixel type %d",
|
|
current_pixel_type);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
goto fail;
|
|
}
|
|
|
|
bytestream2_skip(&ch_gb, 4);
|
|
xsub = bytestream2_get_le32(&ch_gb);
|
|
ysub = bytestream2_get_le32(&ch_gb);
|
|
|
|
if (xsub != 1 || ysub != 1) {
|
|
avpriv_report_missing_feature(s->avctx,
|
|
"Subsampling %dx%d",
|
|
xsub, ysub);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
goto fail;
|
|
}
|
|
|
|
if (channel_index >= 0 && s->channel_offsets[channel_index] == -1) { /* channel has not been previously assigned */
|
|
if (s->pixel_type != EXR_UNKNOWN &&
|
|
s->pixel_type != current_pixel_type) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"RGB channels not of the same depth.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
s->pixel_type = current_pixel_type;
|
|
s->channel_offsets[channel_index] = s->current_channel_offset;
|
|
} else if (channel_index >= 0) {
|
|
av_log(s->avctx, AV_LOG_WARNING,
|
|
"Multiple channels with index %d.\n", channel_index);
|
|
if (++dup_channels > 10) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
s->channels = av_realloc(s->channels,
|
|
++s->nb_channels * sizeof(EXRChannel));
|
|
if (!s->channels) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
channel = &s->channels[s->nb_channels - 1];
|
|
channel->pixel_type = current_pixel_type;
|
|
channel->xsub = xsub;
|
|
channel->ysub = ysub;
|
|
|
|
if (current_pixel_type == EXR_HALF) {
|
|
s->current_channel_offset += 2;
|
|
} else {/* Float or UINT32 */
|
|
s->current_channel_offset += 4;
|
|
}
|
|
}
|
|
|
|
/* Check if all channels are set with an offset or if the channels
|
|
* are causing an overflow */
|
|
if (!s->is_luma) {/* if we expected to have at least 3 channels */
|
|
if (FFMIN3(s->channel_offsets[0],
|
|
s->channel_offsets[1],
|
|
s->channel_offsets[2]) < 0) {
|
|
if (s->channel_offsets[0] < 0)
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing red channel.\n");
|
|
if (s->channel_offsets[1] < 0)
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing green channel.\n");
|
|
if (s->channel_offsets[2] < 0)
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing blue channel.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
// skip one last byte and update main gb
|
|
gb->buffer = ch_gb.buffer + 1;
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "dataWindow", "box2i",
|
|
31)) >= 0) {
|
|
int xmin, ymin, xmax, ymax;
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
xmin = bytestream2_get_le32(gb);
|
|
ymin = bytestream2_get_le32(gb);
|
|
xmax = bytestream2_get_le32(gb);
|
|
ymax = bytestream2_get_le32(gb);
|
|
|
|
if (xmin > xmax || ymin > ymax ||
|
|
ymax == INT_MAX || xmax == INT_MAX ||
|
|
(unsigned)xmax - xmin >= INT_MAX ||
|
|
(unsigned)ymax - ymin >= INT_MAX) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
s->xmin = xmin;
|
|
s->xmax = xmax;
|
|
s->ymin = ymin;
|
|
s->ymax = ymax;
|
|
s->xdelta = (s->xmax - s->xmin) + 1;
|
|
s->ydelta = (s->ymax - s->ymin) + 1;
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "displayWindow",
|
|
"box2i", 34)) >= 0) {
|
|
int32_t sx, sy, dx, dy;
|
|
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
sx = bytestream2_get_le32(gb);
|
|
sy = bytestream2_get_le32(gb);
|
|
dx = bytestream2_get_le32(gb);
|
|
dy = bytestream2_get_le32(gb);
|
|
|
|
s->w = (unsigned)dx - sx + 1;
|
|
s->h = (unsigned)dy - sy + 1;
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "lineOrder",
|
|
"lineOrder", 25)) >= 0) {
|
|
int line_order;
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
line_order = bytestream2_get_byte(gb);
|
|
av_log(s->avctx, AV_LOG_DEBUG, "line order: %d.\n", line_order);
|
|
if (line_order > 2) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Unknown line order.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "pixelAspectRatio",
|
|
"float", 31)) >= 0) {
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
s->sar = bytestream2_get_le32(gb);
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "compression",
|
|
"compression", 29)) >= 0) {
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
if (s->compression == EXR_UNKN)
|
|
s->compression = bytestream2_get_byte(gb);
|
|
else {
|
|
bytestream2_skip(gb, 1);
|
|
av_log(s->avctx, AV_LOG_WARNING,
|
|
"Found more than one compression attribute.\n");
|
|
}
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "tiles",
|
|
"tiledesc", 22)) >= 0) {
|
|
char tileLevel;
|
|
|
|
if (!s->is_tile)
|
|
av_log(s->avctx, AV_LOG_WARNING,
|
|
"Found tile attribute and scanline flags. Exr will be interpreted as scanline.\n");
|
|
|
|
s->tile_attr.xSize = bytestream2_get_le32(gb);
|
|
s->tile_attr.ySize = bytestream2_get_le32(gb);
|
|
|
|
tileLevel = bytestream2_get_byte(gb);
|
|
s->tile_attr.level_mode = tileLevel & 0x0f;
|
|
s->tile_attr.level_round = (tileLevel >> 4) & 0x0f;
|
|
|
|
if (s->tile_attr.level_mode >= EXR_TILE_LEVEL_UNKNOWN) {
|
|
avpriv_report_missing_feature(s->avctx, "Tile level mode %d",
|
|
s->tile_attr.level_mode);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
goto fail;
|
|
}
|
|
|
|
if (s->tile_attr.level_round >= EXR_TILE_ROUND_UNKNOWN) {
|
|
avpriv_report_missing_feature(s->avctx, "Tile level round %d",
|
|
s->tile_attr.level_round);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
goto fail;
|
|
}
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "writer",
|
|
"string", 1)) >= 0) {
|
|
uint8_t key[256] = { 0 };
|
|
|
|
bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
|
|
av_dict_set(&metadata, "writer", key, 0);
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "framesPerSecond",
|
|
"rational", 33)) >= 0) {
|
|
if (!var_size) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
s->avctx->framerate.num = bytestream2_get_le32(gb);
|
|
s->avctx->framerate.den = bytestream2_get_le32(gb);
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "chunkCount",
|
|
"int", 23)) >= 0) {
|
|
|
|
s->chunk_count = bytestream2_get_le32(gb);
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "type",
|
|
"string", 16)) >= 0) {
|
|
uint8_t key[256] = { 0 };
|
|
|
|
bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
|
|
if (strncmp("scanlineimage", key, var_size) &&
|
|
strncmp("tiledimage", key, var_size))
|
|
return AVERROR_PATCHWELCOME;
|
|
|
|
continue;
|
|
} else if ((var_size = check_header_variable(s, "preview",
|
|
"preview", 16)) >= 0) {
|
|
uint32_t pw = bytestream2_get_le32(gb);
|
|
uint32_t ph = bytestream2_get_le32(gb);
|
|
int64_t psize = 4LL * pw * ph;
|
|
|
|
if (psize >= bytestream2_get_bytes_left(gb))
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
bytestream2_skip(gb, psize);
|
|
|
|
continue;
|
|
}
|
|
|
|
// Check if there are enough bytes for a header
|
|
if (bytestream2_get_bytes_left(gb) <= 9) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Incomplete header\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
// Process unknown variables
|
|
{
|
|
uint8_t name[256] = { 0 };
|
|
uint8_t type[256] = { 0 };
|
|
uint8_t value[256] = { 0 };
|
|
int i = 0, size;
|
|
|
|
while (bytestream2_get_bytes_left(gb) > 0 &&
|
|
bytestream2_peek_byte(gb) && i < 255) {
|
|
name[i++] = bytestream2_get_byte(gb);
|
|
}
|
|
|
|
bytestream2_skip(gb, 1);
|
|
i = 0;
|
|
while (bytestream2_get_bytes_left(gb) > 0 &&
|
|
bytestream2_peek_byte(gb) && i < 255) {
|
|
type[i++] = bytestream2_get_byte(gb);
|
|
}
|
|
bytestream2_skip(gb, 1);
|
|
size = bytestream2_get_le32(gb);
|
|
|
|
bytestream2_get_buffer(gb, value, FFMIN(sizeof(value) - 1, size));
|
|
if (!strcmp(type, "string"))
|
|
av_dict_set(&metadata, name, value, 0);
|
|
}
|
|
}
|
|
|
|
if (s->compression == EXR_UNKN) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing compression attribute.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
if (s->is_tile) {
|
|
if (s->tile_attr.xSize < 1 || s->tile_attr.ySize < 1) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid tile attribute.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (bytestream2_get_bytes_left(gb) <= 0) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Incomplete frame.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
frame->metadata = metadata;
|
|
|
|
// aaand we are done
|
|
bytestream2_skip(gb, 1);
|
|
return 0;
|
|
fail:
|
|
av_dict_free(&metadata);
|
|
return ret;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
EXRContext *s = avctx->priv_data;
|
|
GetByteContext *gb = &s->gb;
|
|
uint8_t *ptr;
|
|
|
|
int i, y, ret, ymax;
|
|
int planes;
|
|
int out_line_size;
|
|
int nb_blocks; /* nb scanline or nb tile */
|
|
uint64_t start_offset_table;
|
|
uint64_t start_next_scanline;
|
|
PutByteContext offset_table_writer;
|
|
|
|
bytestream2_init(gb, avpkt->data, avpkt->size);
|
|
|
|
if ((ret = decode_header(s, picture)) < 0)
|
|
return ret;
|
|
|
|
if ((s->compression == EXR_DWAA || s->compression == EXR_DWAB) &&
|
|
s->pixel_type == EXR_HALF) {
|
|
s->current_channel_offset *= 2;
|
|
for (int i = 0; i < 4; i++)
|
|
s->channel_offsets[i] *= 2;
|
|
}
|
|
|
|
switch (s->pixel_type) {
|
|
case EXR_FLOAT:
|
|
case EXR_HALF:
|
|
if (s->channel_offsets[3] >= 0) {
|
|
if (!s->is_luma) {
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
|
|
} else {
|
|
/* todo: change this when a floating point pixel format with luma with alpha is implemented */
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
|
|
}
|
|
} else {
|
|
if (!s->is_luma) {
|
|
avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
|
|
} else {
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAYF32;
|
|
}
|
|
}
|
|
break;
|
|
case EXR_UINT:
|
|
if (s->channel_offsets[3] >= 0) {
|
|
if (!s->is_luma) {
|
|
avctx->pix_fmt = AV_PIX_FMT_RGBA64;
|
|
} else {
|
|
avctx->pix_fmt = AV_PIX_FMT_YA16;
|
|
}
|
|
} else {
|
|
if (!s->is_luma) {
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB48;
|
|
} else {
|
|
avctx->pix_fmt = AV_PIX_FMT_GRAY16;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
av_log(avctx, AV_LOG_ERROR, "Missing channel list.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED)
|
|
avctx->color_trc = s->apply_trc_type;
|
|
|
|
switch (s->compression) {
|
|
case EXR_RAW:
|
|
case EXR_RLE:
|
|
case EXR_ZIP1:
|
|
s->scan_lines_per_block = 1;
|
|
break;
|
|
case EXR_PXR24:
|
|
case EXR_ZIP16:
|
|
s->scan_lines_per_block = 16;
|
|
break;
|
|
case EXR_PIZ:
|
|
case EXR_B44:
|
|
case EXR_B44A:
|
|
case EXR_DWAA:
|
|
s->scan_lines_per_block = 32;
|
|
break;
|
|
case EXR_DWAB:
|
|
s->scan_lines_per_block = 256;
|
|
break;
|
|
default:
|
|
avpriv_report_missing_feature(avctx, "Compression %d", s->compression);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
/* Verify the xmin, xmax, ymin and ymax before setting the actual image size.
|
|
* It's possible for the data window can larger or outside the display window */
|
|
if (s->xmin > s->xmax || s->ymin > s->ymax ||
|
|
s->ydelta == 0xFFFFFFFF || s->xdelta == 0xFFFFFFFF) {
|
|
av_log(avctx, AV_LOG_ERROR, "Wrong or missing size information.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((ret = ff_set_dimensions(avctx, s->w, s->h)) < 0)
|
|
return ret;
|
|
|
|
ff_set_sar(s->avctx, av_d2q(av_int2float(s->sar), 255));
|
|
|
|
s->desc = av_pix_fmt_desc_get(avctx->pix_fmt);
|
|
if (!s->desc)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
|
|
planes = s->desc->nb_components;
|
|
out_line_size = avctx->width * 4;
|
|
} else {
|
|
planes = 1;
|
|
out_line_size = avctx->width * 2 * s->desc->nb_components;
|
|
}
|
|
|
|
if (s->is_tile) {
|
|
nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) *
|
|
((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize);
|
|
} else { /* scanline */
|
|
nb_blocks = (s->ydelta + s->scan_lines_per_block - 1) /
|
|
s->scan_lines_per_block;
|
|
}
|
|
|
|
if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0)
|
|
return ret;
|
|
|
|
if (bytestream2_get_bytes_left(gb)/8 < nb_blocks)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
// check offset table and recreate it if need
|
|
if (!s->is_tile && bytestream2_peek_le64(gb) == 0) {
|
|
av_log(s->avctx, AV_LOG_DEBUG, "recreating invalid scanline offset table\n");
|
|
|
|
start_offset_table = bytestream2_tell(gb);
|
|
start_next_scanline = start_offset_table + nb_blocks * 8;
|
|
bytestream2_init_writer(&offset_table_writer, &avpkt->data[start_offset_table], nb_blocks * 8);
|
|
|
|
for (y = 0; y < nb_blocks; y++) {
|
|
/* write offset of prev scanline in offset table */
|
|
bytestream2_put_le64(&offset_table_writer, start_next_scanline);
|
|
|
|
/* get len of next scanline */
|
|
bytestream2_seek(gb, start_next_scanline + 4, SEEK_SET);/* skip line number */
|
|
start_next_scanline += (bytestream2_get_le32(gb) + 8);
|
|
}
|
|
bytestream2_seek(gb, start_offset_table, SEEK_SET);
|
|
}
|
|
|
|
// save pointer we are going to use in decode_block
|
|
s->buf = avpkt->data;
|
|
s->buf_size = avpkt->size;
|
|
|
|
// Zero out the start if ymin is not 0
|
|
for (i = 0; i < planes; i++) {
|
|
ptr = picture->data[i];
|
|
for (y = 0; y < FFMIN(s->ymin, s->h); y++) {
|
|
memset(ptr, 0, out_line_size);
|
|
ptr += picture->linesize[i];
|
|
}
|
|
}
|
|
|
|
s->picture = picture;
|
|
|
|
avctx->execute2(avctx, decode_block, s->thread_data, NULL, nb_blocks);
|
|
|
|
ymax = FFMAX(0, s->ymax + 1);
|
|
// Zero out the end if ymax+1 is not h
|
|
if (ymax < avctx->height)
|
|
for (i = 0; i < planes; i++) {
|
|
ptr = picture->data[i] + (ymax * picture->linesize[i]);
|
|
for (y = ymax; y < avctx->height; y++) {
|
|
memset(ptr, 0, out_line_size);
|
|
ptr += picture->linesize[i];
|
|
}
|
|
}
|
|
|
|
picture->pict_type = AV_PICTURE_TYPE_I;
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
{
|
|
EXRContext *s = avctx->priv_data;
|
|
uint32_t i;
|
|
union av_intfloat32 t;
|
|
float one_gamma = 1.0f / s->gamma;
|
|
avpriv_trc_function trc_func = NULL;
|
|
|
|
ff_init_half2float_tables(&s->h2f_tables);
|
|
|
|
s->avctx = avctx;
|
|
|
|
ff_exrdsp_init(&s->dsp);
|
|
|
|
#if HAVE_BIGENDIAN
|
|
ff_bswapdsp_init(&s->bbdsp);
|
|
#endif
|
|
|
|
trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
|
|
if (trc_func) {
|
|
for (i = 0; i < 65536; ++i) {
|
|
t.i = half2float(i, &s->h2f_tables);
|
|
t.f = trc_func(t.f);
|
|
s->gamma_table[i] = t;
|
|
}
|
|
} else {
|
|
if (one_gamma > 0.9999f && one_gamma < 1.0001f) {
|
|
for (i = 0; i < 65536; ++i) {
|
|
s->gamma_table[i].i = half2float(i, &s->h2f_tables);
|
|
}
|
|
} else {
|
|
for (i = 0; i < 65536; ++i) {
|
|
t.i = half2float(i, &s->h2f_tables);
|
|
/* If negative value we reuse half value */
|
|
if (t.f <= 0.0f) {
|
|
s->gamma_table[i] = t;
|
|
} else {
|
|
t.f = powf(t.f, one_gamma);
|
|
s->gamma_table[i] = t;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// allocate thread data, used for non EXR_RAW compression types
|
|
s->thread_data = av_calloc(avctx->thread_count, sizeof(*s->thread_data));
|
|
if (!s->thread_data)
|
|
return AVERROR(ENOMEM);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int decode_end(AVCodecContext *avctx)
|
|
{
|
|
EXRContext *s = avctx->priv_data;
|
|
int i;
|
|
for (i = 0; i < avctx->thread_count; i++) {
|
|
EXRThreadData *td = &s->thread_data[i];
|
|
av_freep(&td->uncompressed_data);
|
|
av_freep(&td->tmp);
|
|
av_freep(&td->bitmap);
|
|
av_freep(&td->lut);
|
|
av_freep(&td->he);
|
|
av_freep(&td->freq);
|
|
av_freep(&td->ac_data);
|
|
av_freep(&td->dc_data);
|
|
av_freep(&td->rle_data);
|
|
av_freep(&td->rle_raw_data);
|
|
ff_free_vlc(&td->vlc);
|
|
}
|
|
|
|
av_freep(&s->thread_data);
|
|
av_freep(&s->channels);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(EXRContext, x)
|
|
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
|
|
static const AVOption options[] = {
|
|
{ "layer", "Set the decoding layer", OFFSET(layer),
|
|
AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
|
|
{ "part", "Set the decoding part", OFFSET(selected_part),
|
|
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
|
|
{ "gamma", "Set the float gamma value when decoding", OFFSET(gamma),
|
|
AV_OPT_TYPE_FLOAT, { .dbl = 1.0f }, 0.001, FLT_MAX, VD },
|
|
|
|
// XXX: Note the abuse of the enum using AVCOL_TRC_UNSPECIFIED to subsume the existing gamma option
|
|
{ "apply_trc", "color transfer characteristics to apply to EXR linear input", OFFSET(apply_trc_type),
|
|
AV_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, VD, "apply_trc_type"},
|
|
{ "bt709", "BT.709", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT709 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "gamma", "gamma", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_UNSPECIFIED }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "gamma22", "BT.470 M", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA22 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "gamma28", "BT.470 BG", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA28 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "smpte170m", "SMPTE 170 M", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "smpte240m", "SMPTE 240 M", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE240M }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "linear", "Linear", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LINEAR }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "log", "Log", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "log_sqrt", "Log square root", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG_SQRT }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "iec61966_2_4", "IEC 61966-2-4", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_4 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "bt1361", "BT.1361", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT1361_ECG }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "iec61966_2_1", "IEC 61966-2-1", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "bt2020_10bit", "BT.2020 - 10 bit", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_10 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "bt2020_12bit", "BT.2020 - 12 bit", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "smpte2084", "SMPTE ST 2084", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
{ "smpte428_1", "SMPTE ST 428-1", 0,
|
|
AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
|
|
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass exr_class = {
|
|
.class_name = "EXR",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
const FFCodec ff_exr_decoder = {
|
|
.p.name = "exr",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("OpenEXR image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_EXR,
|
|
.priv_data_size = sizeof(EXRContext),
|
|
.init = decode_init,
|
|
.close = decode_end,
|
|
FF_CODEC_DECODE_CB(decode_frame),
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
|
|
AV_CODEC_CAP_SLICE_THREADS,
|
|
.p.priv_class = &exr_class,
|
|
};
|