mirror of https://git.ffmpeg.org/ffmpeg.git
2573 lines
103 KiB
C
2573 lines
103 KiB
C
/*
|
|
* JPEG 2000 image decoder
|
|
* Copyright (c) 2007 Kamil Nowosad
|
|
* Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* JPEG 2000 image decoder
|
|
*/
|
|
|
|
#include <inttypes.h>
|
|
#include <math.h>
|
|
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/common.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "codec_internal.h"
|
|
#include "decode.h"
|
|
#include "thread.h"
|
|
#include "jpeg2000.h"
|
|
#include "jpeg2000dsp.h"
|
|
#include "profiles.h"
|
|
#include "jpeg2000dec.h"
|
|
#include "jpeg2000htdec.h"
|
|
|
|
#define JP2_SIG_TYPE 0x6A502020
|
|
#define JP2_SIG_VALUE 0x0D0A870A
|
|
#define JP2_CODESTREAM 0x6A703263
|
|
#define JP2_HEADER 0x6A703268
|
|
|
|
#define HAD_COC 0x01
|
|
#define HAD_QCC 0x02
|
|
|
|
/* get_bits functions for JPEG2000 packet bitstream
|
|
* It is a get_bit function with a bit-stuffing routine. If the value of the
|
|
* byte is 0xFF, the next byte includes an extra zero bit stuffed into the MSB.
|
|
* cf. ISO-15444-1:2002 / B.10.1 Bit-stuffing routine */
|
|
static int get_bits(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
int res = 0;
|
|
|
|
while (--n >= 0) {
|
|
res <<= 1;
|
|
if (s->bit_index == 0) {
|
|
s->bit_index = 7 + (bytestream2_get_byte(&s->g) != 0xFFu);
|
|
}
|
|
s->bit_index--;
|
|
res |= (bytestream2_peek_byte(&s->g) >> s->bit_index) & 1;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static void jpeg2000_flush(Jpeg2000DecoderContext *s)
|
|
{
|
|
if (bytestream2_get_byte(&s->g) == 0xff)
|
|
bytestream2_skip(&s->g, 1);
|
|
s->bit_index = 8;
|
|
}
|
|
|
|
/* decode the value stored in node */
|
|
static int tag_tree_decode(Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node,
|
|
int threshold)
|
|
{
|
|
Jpeg2000TgtNode *stack[30];
|
|
int sp = -1, curval = 0;
|
|
|
|
if (!node) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "missing node\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
while (node && !node->vis) {
|
|
stack[++sp] = node;
|
|
node = node->parent;
|
|
}
|
|
|
|
if (node)
|
|
curval = node->val;
|
|
else
|
|
curval = stack[sp]->val;
|
|
|
|
while (curval < threshold && sp >= 0) {
|
|
if (curval < stack[sp]->val)
|
|
curval = stack[sp]->val;
|
|
while (curval < threshold) {
|
|
int ret;
|
|
if ((ret = get_bits(s, 1)) > 0) {
|
|
stack[sp]->vis++;
|
|
break;
|
|
} else if (!ret)
|
|
curval++;
|
|
else
|
|
return ret;
|
|
}
|
|
stack[sp]->val = curval;
|
|
sp--;
|
|
}
|
|
return curval;
|
|
}
|
|
|
|
static int pix_fmt_match(enum AVPixelFormat pix_fmt, int components,
|
|
int bpc, uint32_t log2_chroma_wh, int pal8)
|
|
{
|
|
int match = 1;
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
|
|
av_assert2(desc);
|
|
|
|
if (desc->nb_components != components) {
|
|
return 0;
|
|
}
|
|
|
|
switch (components) {
|
|
case 4:
|
|
match = match && desc->comp[3].depth >= bpc &&
|
|
(log2_chroma_wh >> 14 & 3) == 0 &&
|
|
(log2_chroma_wh >> 12 & 3) == 0;
|
|
case 3:
|
|
match = match && desc->comp[2].depth >= bpc &&
|
|
(log2_chroma_wh >> 10 & 3) == desc->log2_chroma_w &&
|
|
(log2_chroma_wh >> 8 & 3) == desc->log2_chroma_h;
|
|
case 2:
|
|
match = match && desc->comp[1].depth >= bpc &&
|
|
(log2_chroma_wh >> 6 & 3) == desc->log2_chroma_w &&
|
|
(log2_chroma_wh >> 4 & 3) == desc->log2_chroma_h;
|
|
|
|
case 1:
|
|
match = match && desc->comp[0].depth >= bpc &&
|
|
(log2_chroma_wh >> 2 & 3) == 0 &&
|
|
(log2_chroma_wh & 3) == 0 &&
|
|
(desc->flags & AV_PIX_FMT_FLAG_PAL) == pal8 * AV_PIX_FMT_FLAG_PAL;
|
|
}
|
|
return match;
|
|
}
|
|
|
|
// pix_fmts with lower bpp have to be listed before
|
|
// similar pix_fmts with higher bpp.
|
|
#define RGB_PIXEL_FORMATS AV_PIX_FMT_PAL8,AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64
|
|
#define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16,AV_PIX_FMT_YA16
|
|
#define YUV_PIXEL_FORMATS AV_PIX_FMT_YUV410P,AV_PIX_FMT_YUV411P,AV_PIX_FMT_YUVA420P, \
|
|
AV_PIX_FMT_YUV420P,AV_PIX_FMT_YUV422P,AV_PIX_FMT_YUVA422P, \
|
|
AV_PIX_FMT_YUV440P,AV_PIX_FMT_YUV444P,AV_PIX_FMT_YUVA444P, \
|
|
AV_PIX_FMT_YUV420P9,AV_PIX_FMT_YUV422P9,AV_PIX_FMT_YUV444P9, \
|
|
AV_PIX_FMT_YUVA420P9,AV_PIX_FMT_YUVA422P9,AV_PIX_FMT_YUVA444P9, \
|
|
AV_PIX_FMT_YUV420P10,AV_PIX_FMT_YUV422P10,AV_PIX_FMT_YUV444P10, \
|
|
AV_PIX_FMT_YUVA420P10,AV_PIX_FMT_YUVA422P10,AV_PIX_FMT_YUVA444P10, \
|
|
AV_PIX_FMT_YUV420P12,AV_PIX_FMT_YUV422P12,AV_PIX_FMT_YUV444P12, \
|
|
AV_PIX_FMT_YUV420P14,AV_PIX_FMT_YUV422P14,AV_PIX_FMT_YUV444P14, \
|
|
AV_PIX_FMT_YUV420P16,AV_PIX_FMT_YUV422P16,AV_PIX_FMT_YUV444P16, \
|
|
AV_PIX_FMT_YUVA420P16,AV_PIX_FMT_YUVA422P16,AV_PIX_FMT_YUVA444P16
|
|
#define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12
|
|
|
|
static const enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS};
|
|
static const enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS};
|
|
static const enum AVPixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS};
|
|
static const enum AVPixelFormat xyz_pix_fmts[] = {XYZ_PIXEL_FORMATS,
|
|
YUV_PIXEL_FORMATS};
|
|
static const enum AVPixelFormat all_pix_fmts[] = {RGB_PIXEL_FORMATS,
|
|
GRAY_PIXEL_FORMATS,
|
|
YUV_PIXEL_FORMATS,
|
|
XYZ_PIXEL_FORMATS};
|
|
|
|
/* marker segments */
|
|
/* get sizes and offsets of image, tiles; number of components */
|
|
static int get_siz(Jpeg2000DecoderContext *s)
|
|
{
|
|
int i;
|
|
int ncomponents;
|
|
uint32_t log2_chroma_wh = 0;
|
|
const enum AVPixelFormat *possible_fmts = NULL;
|
|
int possible_fmts_nb = 0;
|
|
int ret;
|
|
int o_dimx, o_dimy; //original image dimensions.
|
|
int dimx, dimy;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 36) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for SIZ\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
s->avctx->profile = bytestream2_get_be16u(&s->g); // Rsiz
|
|
s->width = bytestream2_get_be32u(&s->g); // Width
|
|
s->height = bytestream2_get_be32u(&s->g); // Height
|
|
s->image_offset_x = bytestream2_get_be32u(&s->g); // X0Siz
|
|
s->image_offset_y = bytestream2_get_be32u(&s->g); // Y0Siz
|
|
s->tile_width = bytestream2_get_be32u(&s->g); // XTSiz
|
|
s->tile_height = bytestream2_get_be32u(&s->g); // YTSiz
|
|
s->tile_offset_x = bytestream2_get_be32u(&s->g); // XT0Siz
|
|
s->tile_offset_y = bytestream2_get_be32u(&s->g); // YT0Siz
|
|
ncomponents = bytestream2_get_be16u(&s->g); // CSiz
|
|
|
|
if (av_image_check_size2(s->width, s->height, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx)) {
|
|
avpriv_request_sample(s->avctx, "Large Dimensions");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (ncomponents <= 0) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid number of components: %d\n",
|
|
s->ncomponents);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (ncomponents > 4) {
|
|
avpriv_request_sample(s->avctx, "Support for %d components",
|
|
ncomponents);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
if (s->tile_offset_x < 0 || s->tile_offset_y < 0 ||
|
|
s->image_offset_x < s->tile_offset_x ||
|
|
s->image_offset_y < s->tile_offset_y ||
|
|
s->tile_width + (int64_t)s->tile_offset_x <= s->image_offset_x ||
|
|
s->tile_height + (int64_t)s->tile_offset_y <= s->image_offset_y
|
|
) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Tile offsets are invalid\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (s->image_offset_x >= s->width || s->image_offset_y >= s->height) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "image offsets outside image");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (s->reduction_factor && (s->image_offset_x || s->image_offset_y) ){
|
|
av_log(s->avctx, AV_LOG_ERROR, "reduction factor with image offsets is not fully implemented");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
s->ncomponents = ncomponents;
|
|
|
|
if (s->tile_width <= 0 || s->tile_height <= 0) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid tile dimension %dx%d.\n",
|
|
s->tile_width, s->tile_height);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 3 * s->ncomponents) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for %d components in SIZ\n", s->ncomponents);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
for (i = 0; i < s->ncomponents; i++) { // Ssiz_i XRsiz_i, YRsiz_i
|
|
uint8_t x = bytestream2_get_byteu(&s->g);
|
|
s->cbps[i] = (x & 0x7f) + 1;
|
|
s->precision = FFMAX(s->cbps[i], s->precision);
|
|
s->sgnd[i] = !!(x & 0x80);
|
|
s->cdx[i] = bytestream2_get_byteu(&s->g);
|
|
s->cdy[i] = bytestream2_get_byteu(&s->g);
|
|
if ( !s->cdx[i] || s->cdx[i] == 3 || s->cdx[i] > 4
|
|
|| !s->cdy[i] || s->cdy[i] == 3 || s->cdy[i] > 4) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid sample separation %d/%d\n", s->cdx[i], s->cdy[i]);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
log2_chroma_wh |= s->cdy[i] >> 1 << i * 4 | s->cdx[i] >> 1 << i * 4 + 2;
|
|
}
|
|
|
|
s->numXtiles = ff_jpeg2000_ceildiv(s->width - s->tile_offset_x, s->tile_width);
|
|
s->numYtiles = ff_jpeg2000_ceildiv(s->height - s->tile_offset_y, s->tile_height);
|
|
|
|
// There must be at least a SOT and SOD per tile, their minimum size is 14
|
|
if (s->numXtiles * (uint64_t)s->numYtiles > INT_MAX/sizeof(*s->tile) ||
|
|
s->numXtiles * s->numYtiles * 14LL > bytestream2_size(&s->g)
|
|
) {
|
|
s->numXtiles = s->numYtiles = 0;
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
s->tile = av_calloc(s->numXtiles * s->numYtiles, sizeof(*s->tile));
|
|
if (!s->tile) {
|
|
s->numXtiles = s->numYtiles = 0;
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
for (i = 0; i < s->numXtiles * s->numYtiles; i++) {
|
|
Jpeg2000Tile *tile = s->tile + i;
|
|
|
|
tile->comp = av_mallocz(s->ncomponents * sizeof(*tile->comp));
|
|
if (!tile->comp)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
/* compute image size with reduction factor */
|
|
o_dimx = ff_jpeg2000_ceildivpow2(s->width - s->image_offset_x,
|
|
s->reduction_factor);
|
|
o_dimy = ff_jpeg2000_ceildivpow2(s->height - s->image_offset_y,
|
|
s->reduction_factor);
|
|
dimx = ff_jpeg2000_ceildiv(o_dimx, s->cdx[0]);
|
|
dimy = ff_jpeg2000_ceildiv(o_dimy, s->cdy[0]);
|
|
for (i = 1; i < s->ncomponents; i++) {
|
|
dimx = FFMAX(dimx, ff_jpeg2000_ceildiv(o_dimx, s->cdx[i]));
|
|
dimy = FFMAX(dimy, ff_jpeg2000_ceildiv(o_dimy, s->cdy[i]));
|
|
}
|
|
|
|
ret = ff_set_dimensions(s->avctx, dimx << s->avctx->lowres, dimy << s->avctx->lowres);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (s->avctx->profile == AV_PROFILE_JPEG2000_DCINEMA_2K ||
|
|
s->avctx->profile == AV_PROFILE_JPEG2000_DCINEMA_4K) {
|
|
possible_fmts = xyz_pix_fmts;
|
|
possible_fmts_nb = FF_ARRAY_ELEMS(xyz_pix_fmts);
|
|
} else {
|
|
switch (s->colour_space) {
|
|
case 16:
|
|
possible_fmts = rgb_pix_fmts;
|
|
possible_fmts_nb = FF_ARRAY_ELEMS(rgb_pix_fmts);
|
|
break;
|
|
case 17:
|
|
possible_fmts = gray_pix_fmts;
|
|
possible_fmts_nb = FF_ARRAY_ELEMS(gray_pix_fmts);
|
|
break;
|
|
case 18:
|
|
possible_fmts = yuv_pix_fmts;
|
|
possible_fmts_nb = FF_ARRAY_ELEMS(yuv_pix_fmts);
|
|
break;
|
|
default:
|
|
possible_fmts = all_pix_fmts;
|
|
possible_fmts_nb = FF_ARRAY_ELEMS(all_pix_fmts);
|
|
break;
|
|
}
|
|
}
|
|
if ( s->avctx->pix_fmt != AV_PIX_FMT_NONE
|
|
&& !pix_fmt_match(s->avctx->pix_fmt, ncomponents, s->precision, log2_chroma_wh, s->pal8))
|
|
s->avctx->pix_fmt = AV_PIX_FMT_NONE;
|
|
if (s->avctx->pix_fmt == AV_PIX_FMT_NONE)
|
|
for (i = 0; i < possible_fmts_nb; ++i) {
|
|
if (pix_fmt_match(possible_fmts[i], ncomponents, s->precision, log2_chroma_wh, s->pal8)) {
|
|
s->avctx->pix_fmt = possible_fmts[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (i == possible_fmts_nb) {
|
|
if (ncomponents == 4 &&
|
|
s->cdy[0] == 1 && s->cdx[0] == 1 &&
|
|
s->cdy[1] == 1 && s->cdx[1] == 1 &&
|
|
s->cdy[2] == s->cdy[3] && s->cdx[2] == s->cdx[3]) {
|
|
if (s->precision == 8 && s->cdy[2] == 2 && s->cdx[2] == 2 && !s->pal8) {
|
|
s->avctx->pix_fmt = AV_PIX_FMT_YUVA420P;
|
|
s->cdef[0] = 0;
|
|
s->cdef[1] = 1;
|
|
s->cdef[2] = 2;
|
|
s->cdef[3] = 3;
|
|
i = 0;
|
|
}
|
|
} else if (ncomponents == 3 && s->precision == 8 &&
|
|
s->cdx[0] == s->cdx[1] && s->cdx[0] == s->cdx[2] &&
|
|
s->cdy[0] == s->cdy[1] && s->cdy[0] == s->cdy[2]) {
|
|
s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
|
|
i = 0;
|
|
} else if (ncomponents == 2 && s->precision == 8 &&
|
|
s->cdx[0] == s->cdx[1] && s->cdy[0] == s->cdy[1]) {
|
|
s->avctx->pix_fmt = AV_PIX_FMT_YA8;
|
|
i = 0;
|
|
} else if (ncomponents == 2 && s->precision == 16 &&
|
|
s->cdx[0] == s->cdx[1] && s->cdy[0] == s->cdy[1]) {
|
|
s->avctx->pix_fmt = AV_PIX_FMT_YA16;
|
|
i = 0;
|
|
} else if (ncomponents == 1 && s->precision == 8) {
|
|
s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
|
|
i = 0;
|
|
}
|
|
}
|
|
|
|
|
|
if (i == possible_fmts_nb) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"Unknown pix_fmt, profile: %d, colour_space: %d, "
|
|
"components: %d, precision: %d\n"
|
|
"cdx[0]: %d, cdy[0]: %d\n"
|
|
"cdx[1]: %d, cdy[1]: %d\n"
|
|
"cdx[2]: %d, cdy[2]: %d\n"
|
|
"cdx[3]: %d, cdy[3]: %d\n",
|
|
s->avctx->profile, s->colour_space, ncomponents, s->precision,
|
|
s->cdx[0],
|
|
s->cdy[0],
|
|
ncomponents > 1 ? s->cdx[1] : 0,
|
|
ncomponents > 1 ? s->cdy[1] : 0,
|
|
ncomponents > 2 ? s->cdx[2] : 0,
|
|
ncomponents > 2 ? s->cdy[2] : 0,
|
|
ncomponents > 3 ? s->cdx[3] : 0,
|
|
ncomponents > 3 ? s->cdy[3] : 0);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
s->avctx->bits_per_raw_sample = s->precision;
|
|
return 0;
|
|
}
|
|
|
|
/* get common part for COD and COC segments */
|
|
static int get_cox(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
|
|
{
|
|
uint8_t byte;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 5) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COX\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* nreslevels = number of resolution levels
|
|
= number of decomposition level +1 */
|
|
c->nreslevels = bytestream2_get_byteu(&s->g) + 1;
|
|
if (c->nreslevels >= JPEG2000_MAX_RESLEVELS) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "nreslevels %d is invalid\n", c->nreslevels);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (c->nreslevels <= s->reduction_factor) {
|
|
/* we are forced to update reduction_factor as its requested value is
|
|
not compatible with this bitstream, and as we might have used it
|
|
already in setup earlier we have to fail this frame until
|
|
reinitialization is implemented */
|
|
av_log(s->avctx, AV_LOG_ERROR, "reduction_factor too large for this bitstream, max is %d\n", c->nreslevels - 1);
|
|
s->reduction_factor = c->nreslevels - 1;
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
/* compute number of resolution levels to decode */
|
|
c->nreslevels2decode = c->nreslevels - s->reduction_factor;
|
|
|
|
c->log2_cblk_width = (bytestream2_get_byteu(&s->g) & 15) + 2; // cblk width
|
|
c->log2_cblk_height = (bytestream2_get_byteu(&s->g) & 15) + 2; // cblk height
|
|
|
|
if (c->log2_cblk_width > 10 || c->log2_cblk_height > 10 ||
|
|
c->log2_cblk_width + c->log2_cblk_height > 12) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "cblk size invalid\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
c->cblk_style = bytestream2_get_byteu(&s->g);
|
|
if (c->cblk_style != 0) { // cblk style
|
|
if (c->cblk_style & JPEG2000_CTSY_HTJ2K_M || c->cblk_style & JPEG2000_CTSY_HTJ2K_F) {
|
|
av_log(s->avctx,AV_LOG_TRACE,"High Throughput jpeg 2000 codestream.\n");
|
|
} else {
|
|
av_log(s->avctx, AV_LOG_WARNING, "extra cblk styles %X\n", c->cblk_style);
|
|
if (c->cblk_style & JPEG2000_CBLK_BYPASS)
|
|
av_log(s->avctx, AV_LOG_WARNING, "Selective arithmetic coding bypass\n");
|
|
}
|
|
}
|
|
c->transform = bytestream2_get_byteu(&s->g); // DWT transformation type
|
|
/* set integer 9/7 DWT in case of BITEXACT flag */
|
|
if ((s->avctx->flags & AV_CODEC_FLAG_BITEXACT) && (c->transform == FF_DWT97))
|
|
c->transform = FF_DWT97_INT;
|
|
else if (c->transform == FF_DWT53) {
|
|
s->avctx->properties |= FF_CODEC_PROPERTY_LOSSLESS;
|
|
}
|
|
|
|
if (c->csty & JPEG2000_CSTY_PREC) {
|
|
int i;
|
|
for (i = 0; i < c->nreslevels; i++) {
|
|
byte = bytestream2_get_byte(&s->g);
|
|
c->log2_prec_widths[i] = byte & 0x0F; // precinct PPx
|
|
c->log2_prec_heights[i] = (byte >> 4) & 0x0F; // precinct PPy
|
|
if (i)
|
|
if (c->log2_prec_widths[i] == 0 || c->log2_prec_heights[i] == 0) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "PPx %d PPy %d invalid\n",
|
|
c->log2_prec_widths[i], c->log2_prec_heights[i]);
|
|
c->log2_prec_widths[i] = c->log2_prec_heights[i] = 1;
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
} else {
|
|
memset(c->log2_prec_widths , 15, sizeof(c->log2_prec_widths ));
|
|
memset(c->log2_prec_heights, 15, sizeof(c->log2_prec_heights));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* get coding parameters for a particular tile or whole image*/
|
|
static int get_cod(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
|
|
uint8_t *properties)
|
|
{
|
|
Jpeg2000CodingStyle tmp;
|
|
int compno, ret;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 5) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COD\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
tmp.csty = bytestream2_get_byteu(&s->g);
|
|
|
|
// get progression order
|
|
tmp.prog_order = bytestream2_get_byteu(&s->g);
|
|
|
|
tmp.nlayers = bytestream2_get_be16u(&s->g);
|
|
tmp.mct = bytestream2_get_byteu(&s->g); // multiple component transformation
|
|
|
|
if (tmp.mct && s->ncomponents < 3) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"MCT %"PRIu8" with too few components (%d)\n",
|
|
tmp.mct, s->ncomponents);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((ret = get_cox(s, &tmp)) < 0)
|
|
return ret;
|
|
tmp.init = 1;
|
|
for (compno = 0; compno < s->ncomponents; compno++)
|
|
if (!(properties[compno] & HAD_COC))
|
|
memcpy(c + compno, &tmp, sizeof(tmp));
|
|
return 0;
|
|
}
|
|
|
|
/* Get coding parameters for a component in the whole image or a
|
|
* particular tile. */
|
|
static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
|
|
uint8_t *properties)
|
|
{
|
|
int compno, ret;
|
|
uint8_t has_eph, has_sop;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 2) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for COC\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
compno = bytestream2_get_byteu(&s->g);
|
|
|
|
if (compno >= s->ncomponents) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"Invalid compno %d. There are %d components in the image.\n",
|
|
compno, s->ncomponents);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
c += compno;
|
|
has_eph = c->csty & JPEG2000_CSTY_EPH;
|
|
has_sop = c->csty & JPEG2000_CSTY_SOP;
|
|
c->csty = bytestream2_get_byteu(&s->g);
|
|
c->csty |= has_eph; //do not override eph present bits from COD
|
|
c->csty |= has_sop; //do not override sop present bits from COD
|
|
|
|
if ((ret = get_cox(s, c)) < 0)
|
|
return ret;
|
|
|
|
properties[compno] |= HAD_COC;
|
|
c->init = 1;
|
|
return 0;
|
|
}
|
|
|
|
static int get_rgn(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
uint16_t compno;
|
|
compno = (s->ncomponents < 257)? bytestream2_get_byte(&s->g):
|
|
bytestream2_get_be16u(&s->g);
|
|
if (bytestream2_get_byte(&s->g)) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid RGN header.\n");
|
|
return AVERROR_INVALIDDATA; // SRgn field value is 0
|
|
}
|
|
// SPrgn field
|
|
// Currently compno cannot be greater than 4.
|
|
// However, future implementation should support compno up to 65536
|
|
if (compno < s->ncomponents) {
|
|
int v;
|
|
if (s->curtileno == -1) {
|
|
v = bytestream2_get_byte(&s->g);
|
|
if (v > 30)
|
|
return AVERROR_PATCHWELCOME;
|
|
s->roi_shift[compno] = v;
|
|
} else {
|
|
if (s->tile[s->curtileno].tp_idx != 0)
|
|
return AVERROR_INVALIDDATA; // marker occurs only in first tile part of tile
|
|
v = bytestream2_get_byte(&s->g);
|
|
if (v > 30)
|
|
return AVERROR_PATCHWELCOME;
|
|
s->tile[s->curtileno].comp[compno].roi_shift = v;
|
|
}
|
|
return 0;
|
|
}
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* Get common part for QCD and QCC segments. */
|
|
static int get_qcx(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q)
|
|
{
|
|
int i, x;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
x = bytestream2_get_byteu(&s->g); // Sqcd
|
|
|
|
q->nguardbits = x >> 5;
|
|
q->quantsty = x & 0x1f;
|
|
|
|
if (q->quantsty == JPEG2000_QSTY_NONE) {
|
|
n -= 3;
|
|
if (bytestream2_get_bytes_left(&s->g) < n ||
|
|
n > JPEG2000_MAX_DECLEVELS*3)
|
|
return AVERROR_INVALIDDATA;
|
|
for (i = 0; i < n; i++)
|
|
q->expn[i] = bytestream2_get_byteu(&s->g) >> 3;
|
|
} else if (q->quantsty == JPEG2000_QSTY_SI) {
|
|
if (bytestream2_get_bytes_left(&s->g) < 2)
|
|
return AVERROR_INVALIDDATA;
|
|
x = bytestream2_get_be16u(&s->g);
|
|
q->expn[0] = x >> 11;
|
|
q->mant[0] = x & 0x7ff;
|
|
for (i = 1; i < JPEG2000_MAX_DECLEVELS * 3; i++) {
|
|
int curexpn = FFMAX(0, q->expn[0] - (i - 1) / 3);
|
|
q->expn[i] = curexpn;
|
|
q->mant[i] = q->mant[0];
|
|
}
|
|
} else {
|
|
n = (n - 3) >> 1;
|
|
if (bytestream2_get_bytes_left(&s->g) < 2 * n ||
|
|
n > JPEG2000_MAX_DECLEVELS*3)
|
|
return AVERROR_INVALIDDATA;
|
|
for (i = 0; i < n; i++) {
|
|
x = bytestream2_get_be16u(&s->g);
|
|
q->expn[i] = x >> 11;
|
|
q->mant[i] = x & 0x7ff;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Get quantization parameters for a particular tile or a whole image. */
|
|
static int get_qcd(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
|
|
uint8_t *properties)
|
|
{
|
|
Jpeg2000QuantStyle tmp;
|
|
int compno, ret;
|
|
|
|
memset(&tmp, 0, sizeof(tmp));
|
|
|
|
if ((ret = get_qcx(s, n, &tmp)) < 0)
|
|
return ret;
|
|
for (compno = 0; compno < s->ncomponents; compno++)
|
|
if (!(properties[compno] & HAD_QCC))
|
|
memcpy(q + compno, &tmp, sizeof(tmp));
|
|
return 0;
|
|
}
|
|
|
|
/* Get quantization parameters for a component in the whole image
|
|
* on in a particular tile. */
|
|
static int get_qcc(Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q,
|
|
uint8_t *properties)
|
|
{
|
|
int compno;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 1)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
compno = bytestream2_get_byteu(&s->g);
|
|
|
|
if (compno >= s->ncomponents) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"Invalid compno %d. There are %d components in the image.\n",
|
|
compno, s->ncomponents);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
properties[compno] |= HAD_QCC;
|
|
return get_qcx(s, n - 1, q + compno);
|
|
}
|
|
|
|
static int get_poc(Jpeg2000DecoderContext *s, int size, Jpeg2000POC *p)
|
|
{
|
|
int i;
|
|
int elem_size = s->ncomponents <= 257 ? 7 : 9;
|
|
Jpeg2000POC tmp = {{{0}}};
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 5 || size < 2 + elem_size) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for POC\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (elem_size > 7) {
|
|
avpriv_request_sample(s->avctx, "Fat POC not supported");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
tmp.nb_poc = (size - 2) / elem_size;
|
|
if (tmp.nb_poc > MAX_POCS) {
|
|
avpriv_request_sample(s->avctx, "Too many POCs (%d)", tmp.nb_poc);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
for (i = 0; i<tmp.nb_poc; i++) {
|
|
Jpeg2000POCEntry *e = &tmp.poc[i];
|
|
e->RSpoc = bytestream2_get_byteu(&s->g);
|
|
e->CSpoc = bytestream2_get_byteu(&s->g);
|
|
e->LYEpoc = bytestream2_get_be16u(&s->g);
|
|
e->REpoc = bytestream2_get_byteu(&s->g);
|
|
e->CEpoc = bytestream2_get_byteu(&s->g);
|
|
e->Ppoc = bytestream2_get_byteu(&s->g);
|
|
if (!e->CEpoc)
|
|
e->CEpoc = 256;
|
|
if (e->CEpoc > s->ncomponents)
|
|
e->CEpoc = s->ncomponents;
|
|
if ( e->RSpoc >= e->REpoc || e->REpoc > 33
|
|
|| e->CSpoc >= e->CEpoc || e->CEpoc > s->ncomponents
|
|
|| !e->LYEpoc) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "POC Entry %d is invalid (%d, %d, %d, %d, %d, %d)\n", i,
|
|
e->RSpoc, e->CSpoc, e->LYEpoc, e->REpoc, e->CEpoc, e->Ppoc
|
|
);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
}
|
|
|
|
if (!p->nb_poc || p->is_default) {
|
|
*p = tmp;
|
|
} else {
|
|
if (p->nb_poc + tmp.nb_poc > MAX_POCS) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Insufficient space for POC\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
memcpy(p->poc + p->nb_poc, tmp.poc, tmp.nb_poc * sizeof(tmp.poc[0]));
|
|
p->nb_poc += tmp.nb_poc;
|
|
}
|
|
|
|
p->is_default = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Get start of tile segment. */
|
|
static int get_sot(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
Jpeg2000TilePart *tp;
|
|
uint16_t Isot;
|
|
uint32_t Psot;
|
|
unsigned TPsot;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 8)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
s->curtileno = 0;
|
|
Isot = bytestream2_get_be16u(&s->g); // Isot
|
|
if (Isot >= s->numXtiles * s->numYtiles)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
s->curtileno = Isot;
|
|
Psot = bytestream2_get_be32u(&s->g); // Psot
|
|
TPsot = bytestream2_get_byteu(&s->g); // TPsot
|
|
|
|
/* Read TNSot but not used */
|
|
bytestream2_get_byteu(&s->g); // TNsot
|
|
|
|
if (!Psot)
|
|
Psot = bytestream2_get_bytes_left(&s->g) - 2 + n + 2;
|
|
|
|
if (Psot > bytestream2_get_bytes_left(&s->g) - 2 + n + 2) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Psot %"PRIu32" too big\n", Psot);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (TPsot >= FF_ARRAY_ELEMS(s->tile[Isot].tile_part)) {
|
|
avpriv_request_sample(s->avctx, "Too many tile parts");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
s->tile[Isot].tp_idx = TPsot;
|
|
tp = s->tile[Isot].tile_part + TPsot;
|
|
tp->tile_index = Isot;
|
|
tp->tp_end = s->g.buffer + Psot - n - 2;
|
|
|
|
if (!TPsot) {
|
|
Jpeg2000Tile *tile = s->tile + s->curtileno;
|
|
|
|
/* copy defaults */
|
|
memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(Jpeg2000CodingStyle));
|
|
memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(Jpeg2000QuantStyle));
|
|
memcpy(&tile->poc , &s->poc , sizeof(tile->poc));
|
|
tile->poc.is_default = 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int read_crg(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
if (s->ncomponents*4 != n - 2) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid CRG marker.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
bytestream2_skip(&s->g, n - 2);
|
|
return 0;
|
|
}
|
|
/* Tile-part lengths: see ISO 15444-1:2002, section A.7.1
|
|
* Used to know the number of tile parts and lengths.
|
|
* There may be multiple TLMs in the header.
|
|
* TODO: The function is not used for tile-parts management, nor anywhere else.
|
|
* It can be useful to allocate memory for tile parts, before managing the SOT
|
|
* markers. Parsing the TLM header is needed to increment the input header
|
|
* buffer.
|
|
* This marker is mandatory for DCI. */
|
|
static int get_tlm(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
uint8_t Stlm, ST, SP, tile_tlm, i;
|
|
bytestream2_get_byte(&s->g); /* Ztlm: skipped */
|
|
Stlm = bytestream2_get_byte(&s->g);
|
|
|
|
// too complex ? ST = ((Stlm >> 4) & 0x01) + ((Stlm >> 4) & 0x02);
|
|
ST = (Stlm >> 4) & 0x03;
|
|
if (ST == 0x03) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "TLM marker contains invalid ST value.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
SP = (Stlm >> 6) & 0x01;
|
|
tile_tlm = (n - 4) / ((SP + 1) * 2 + ST);
|
|
for (i = 0; i < tile_tlm; i++) {
|
|
switch (ST) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
bytestream2_get_byte(&s->g);
|
|
break;
|
|
case 2:
|
|
bytestream2_get_be16(&s->g);
|
|
break;
|
|
case 3:
|
|
bytestream2_get_be32(&s->g);
|
|
break;
|
|
}
|
|
if (SP == 0) {
|
|
bytestream2_get_be16(&s->g);
|
|
} else {
|
|
bytestream2_get_be32(&s->g);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int get_plt(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
int i;
|
|
int v;
|
|
|
|
av_log(s->avctx, AV_LOG_DEBUG,
|
|
"PLT marker at pos 0x%X\n", bytestream2_tell(&s->g) - 4);
|
|
|
|
if (n < 4)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
/*Zplt =*/ bytestream2_get_byte(&s->g);
|
|
|
|
for (i = 0; i < n - 3; i++) {
|
|
v = bytestream2_get_byte(&s->g);
|
|
}
|
|
if (v & 0x80)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_ppm(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
void *new;
|
|
|
|
if (n < 3) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid length for PPM data.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
bytestream2_get_byte(&s->g); //Zppm is skipped and not used
|
|
new = av_realloc(s->packed_headers,
|
|
s->packed_headers_size + n - 3);
|
|
if (new) {
|
|
s->packed_headers = new;
|
|
} else
|
|
return AVERROR(ENOMEM);
|
|
s->has_ppm = 1;
|
|
memset(&s->packed_headers_stream, 0, sizeof(s->packed_headers_stream));
|
|
bytestream_get_buffer(&s->g.buffer, s->packed_headers + s->packed_headers_size,
|
|
n - 3);
|
|
s->packed_headers_size += n - 3;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int get_ppt(Jpeg2000DecoderContext *s, int n)
|
|
{
|
|
Jpeg2000Tile *tile;
|
|
void *new;
|
|
|
|
if (n < 3) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid length for PPT data.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (s->curtileno < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
tile = &s->tile[s->curtileno];
|
|
if (tile->tp_idx != 0) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"PPT marker can occur only on first tile part of a tile.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
tile->has_ppt = 1; // this tile has a ppt marker
|
|
bytestream2_get_byte(&s->g); // Zppt is skipped and not used
|
|
new = av_realloc(tile->packed_headers,
|
|
tile->packed_headers_size + n - 3);
|
|
if (new) {
|
|
tile->packed_headers = new;
|
|
} else
|
|
return AVERROR(ENOMEM);
|
|
memset(&tile->packed_headers_stream, 0, sizeof(tile->packed_headers_stream));
|
|
memcpy(tile->packed_headers + tile->packed_headers_size,
|
|
s->g.buffer, n - 3);
|
|
tile->packed_headers_size += n - 3;
|
|
bytestream2_skip(&s->g, n - 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int init_tile(Jpeg2000DecoderContext *s, int tileno)
|
|
{
|
|
int compno;
|
|
int tilex = tileno % s->numXtiles;
|
|
int tiley = tileno / s->numXtiles;
|
|
Jpeg2000Tile *tile = s->tile + tileno;
|
|
|
|
if (!tile->comp)
|
|
return AVERROR(ENOMEM);
|
|
|
|
tile->coord[0][0] = av_clip(tilex * (int64_t)s->tile_width + s->tile_offset_x, s->image_offset_x, s->width);
|
|
tile->coord[0][1] = av_clip((tilex + 1) * (int64_t)s->tile_width + s->tile_offset_x, s->image_offset_x, s->width);
|
|
tile->coord[1][0] = av_clip(tiley * (int64_t)s->tile_height + s->tile_offset_y, s->image_offset_y, s->height);
|
|
tile->coord[1][1] = av_clip((tiley + 1) * (int64_t)s->tile_height + s->tile_offset_y, s->image_offset_y, s->height);
|
|
|
|
for (compno = 0; compno < s->ncomponents; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
|
|
int ret; // global bandno
|
|
|
|
comp->coord_o[0][0] = tile->coord[0][0];
|
|
comp->coord_o[0][1] = tile->coord[0][1];
|
|
comp->coord_o[1][0] = tile->coord[1][0];
|
|
comp->coord_o[1][1] = tile->coord[1][1];
|
|
|
|
comp->coord_o[0][0] = ff_jpeg2000_ceildiv(comp->coord_o[0][0], s->cdx[compno]);
|
|
comp->coord_o[0][1] = ff_jpeg2000_ceildiv(comp->coord_o[0][1], s->cdx[compno]);
|
|
comp->coord_o[1][0] = ff_jpeg2000_ceildiv(comp->coord_o[1][0], s->cdy[compno]);
|
|
comp->coord_o[1][1] = ff_jpeg2000_ceildiv(comp->coord_o[1][1], s->cdy[compno]);
|
|
|
|
comp->coord[0][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], s->reduction_factor);
|
|
comp->coord[0][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[0][1], s->reduction_factor);
|
|
comp->coord[1][0] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], s->reduction_factor);
|
|
comp->coord[1][1] = ff_jpeg2000_ceildivpow2(comp->coord_o[1][1], s->reduction_factor);
|
|
|
|
if (!comp->roi_shift)
|
|
comp->roi_shift = s->roi_shift[compno];
|
|
if (!codsty->init)
|
|
return AVERROR_INVALIDDATA;
|
|
if (ret = ff_jpeg2000_init_component(comp, codsty, qntsty,
|
|
s->cbps[compno], s->cdx[compno],
|
|
s->cdy[compno], s->avctx))
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Read the number of coding passes. */
|
|
static int getnpasses(Jpeg2000DecoderContext *s)
|
|
{
|
|
int num;
|
|
if (!get_bits(s, 1))
|
|
return 1;
|
|
if (!get_bits(s, 1))
|
|
return 2;
|
|
if ((num = get_bits(s, 2)) != 3)
|
|
return num < 0 ? num : 3 + num;
|
|
if ((num = get_bits(s, 5)) != 31)
|
|
return num < 0 ? num : 6 + num;
|
|
num = get_bits(s, 7);
|
|
return num < 0 ? num : 37 + num;
|
|
}
|
|
|
|
static int getlblockinc(Jpeg2000DecoderContext *s)
|
|
{
|
|
int res = 0, ret;
|
|
while (ret = get_bits(s, 1)) {
|
|
if (ret < 0)
|
|
return ret;
|
|
res++;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static inline void select_header(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
|
|
int *tp_index)
|
|
{
|
|
s->g = tile->tile_part[*tp_index].header_tpg;
|
|
if (bytestream2_get_bytes_left(&s->g) == 0 && s->bit_index == 8) {
|
|
if (*tp_index < FF_ARRAY_ELEMS(tile->tile_part) - 1) {
|
|
s->g = tile->tile_part[++(*tp_index)].tpg;
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline void select_stream(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
|
|
int *tp_index, Jpeg2000CodingStyle *codsty)
|
|
{
|
|
s->g = tile->tile_part[*tp_index].tpg;
|
|
if (bytestream2_get_bytes_left(&s->g) == 0 && s->bit_index == 8) {
|
|
if (*tp_index < FF_ARRAY_ELEMS(tile->tile_part) - 1) {
|
|
s->g = tile->tile_part[++(*tp_index)].tpg;
|
|
}
|
|
}
|
|
if (codsty->csty & JPEG2000_CSTY_SOP) {
|
|
if (bytestream2_peek_be32(&s->g) == JPEG2000_SOP_FIXED_BYTES)
|
|
bytestream2_skip(&s->g, JPEG2000_SOP_BYTE_LENGTH);
|
|
else
|
|
av_log(s->avctx, AV_LOG_ERROR, "SOP marker not found. instead %X\n", bytestream2_peek_be32(&s->g));
|
|
}
|
|
}
|
|
|
|
static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int *tp_index,
|
|
Jpeg2000CodingStyle *codsty,
|
|
Jpeg2000ResLevel *rlevel, int precno,
|
|
int layno, uint8_t *expn, int numgbits)
|
|
{
|
|
int bandno, cblkno, ret, nb_code_blocks;
|
|
int cwsno;
|
|
|
|
if (layno < rlevel->band[0].prec[precno].decoded_layers)
|
|
return 0;
|
|
rlevel->band[0].prec[precno].decoded_layers = layno + 1;
|
|
// Select stream to read from
|
|
if (s->has_ppm)
|
|
select_header(s, tile, tp_index);
|
|
else if (tile->has_ppt)
|
|
s->g = tile->packed_headers_stream;
|
|
else
|
|
select_stream(s, tile, tp_index, codsty);
|
|
|
|
if (!(ret = get_bits(s, 1))) {
|
|
jpeg2000_flush(s);
|
|
goto skip_data;
|
|
} else if (ret < 0)
|
|
return ret;
|
|
|
|
for (bandno = 0; bandno < rlevel->nbands; bandno++) {
|
|
Jpeg2000Band *band = rlevel->band + bandno;
|
|
Jpeg2000Prec *prec = band->prec + precno;
|
|
|
|
if (band->coord[0][0] == band->coord[0][1] ||
|
|
band->coord[1][0] == band->coord[1][1])
|
|
continue;
|
|
nb_code_blocks = prec->nb_codeblocks_height *
|
|
prec->nb_codeblocks_width;
|
|
for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {
|
|
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
|
|
int incl, newpasses, llen;
|
|
void *tmp;
|
|
|
|
if (cblk->npasses)
|
|
incl = get_bits(s, 1);
|
|
else
|
|
incl = tag_tree_decode(s, prec->cblkincl + cblkno, layno + 1) == layno;
|
|
if (!incl)
|
|
continue;
|
|
else if (incl < 0)
|
|
return incl;
|
|
|
|
if (!cblk->npasses) {
|
|
int zbp = tag_tree_decode(s, prec->zerobits + cblkno, 100);
|
|
int v = expn[bandno] + numgbits - 1 - zbp;
|
|
|
|
if (v < 0 || v > 30) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"nonzerobits %d invalid or unsupported\n", v);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
cblk->zbp = zbp;
|
|
cblk->nonzerobits = v;
|
|
}
|
|
if ((newpasses = getnpasses(s)) < 0)
|
|
return newpasses;
|
|
av_assert2(newpasses > 0);
|
|
if (cblk->npasses + newpasses >= JPEG2000_MAX_PASSES) {
|
|
avpriv_request_sample(s->avctx, "Too many passes");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
if ((llen = getlblockinc(s)) < 0)
|
|
return llen;
|
|
if (cblk->lblock + llen + av_log2(newpasses) > 16) {
|
|
avpriv_request_sample(s->avctx,
|
|
"Block with length beyond 16 bits");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
cblk->lblock += llen;
|
|
|
|
cblk->nb_lengthinc = 0;
|
|
cblk->nb_terminationsinc = 0;
|
|
av_free(cblk->lengthinc);
|
|
cblk->lengthinc = av_calloc(newpasses, sizeof(*cblk->lengthinc));
|
|
if (!cblk->lengthinc)
|
|
return AVERROR(ENOMEM);
|
|
tmp = av_realloc_array(cblk->data_start, cblk->nb_terminations + newpasses + 1, sizeof(*cblk->data_start));
|
|
if (!tmp)
|
|
return AVERROR(ENOMEM);
|
|
cblk->data_start = tmp;
|
|
do {
|
|
int newpasses1 = 0;
|
|
|
|
while (newpasses1 < newpasses) {
|
|
newpasses1 ++;
|
|
if (needs_termination(codsty->cblk_style, cblk->npasses + newpasses1 - 1)) {
|
|
cblk->nb_terminationsinc ++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (newpasses > 1 && (codsty->cblk_style & JPEG2000_CTSY_HTJ2K_F)) {
|
|
// Retrieve pass lengths for each pass
|
|
int href_passes = (cblk->npasses + newpasses - 1) % 3;
|
|
int eb = av_log2(newpasses - href_passes);
|
|
int extra_bit = newpasses > 2 ? 1 : 0;
|
|
if ((ret = get_bits(s, llen + eb + 3)) < 0)
|
|
return ret;
|
|
cblk->pass_lengths[0] = ret;
|
|
if ((ret = get_bits(s, llen + 3 + extra_bit)) < 0)
|
|
return ret;
|
|
cblk->pass_lengths[1] = ret;
|
|
ret = cblk->pass_lengths[0] + cblk->pass_lengths[1];
|
|
} else {
|
|
if ((ret = get_bits(s, av_log2(newpasses1) + cblk->lblock)) < 0)
|
|
return ret;
|
|
cblk->pass_lengths[0] = ret;
|
|
}
|
|
if (ret > cblk->data_allocated) {
|
|
size_t new_size = FFMAX(2*cblk->data_allocated, ret);
|
|
void *new = av_realloc(cblk->data, new_size);
|
|
if (new) {
|
|
cblk->data = new;
|
|
cblk->data_allocated = new_size;
|
|
}
|
|
}
|
|
if (ret > cblk->data_allocated) {
|
|
avpriv_request_sample(s->avctx,
|
|
"Block with lengthinc greater than %"SIZE_SPECIFIER"",
|
|
cblk->data_allocated);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
cblk->lengthinc[cblk->nb_lengthinc++] = ret;
|
|
cblk->npasses += newpasses1;
|
|
newpasses -= newpasses1;
|
|
} while(newpasses);
|
|
}
|
|
}
|
|
jpeg2000_flush(s);
|
|
|
|
if (codsty->csty & JPEG2000_CSTY_EPH) {
|
|
if (bytestream2_peek_be16(&s->g) == JPEG2000_EPH)
|
|
bytestream2_skip(&s->g, 2);
|
|
else
|
|
av_log(s->avctx, AV_LOG_ERROR, "EPH marker not found. instead %X\n", bytestream2_peek_be32(&s->g));
|
|
}
|
|
|
|
// Save state of stream
|
|
if (s->has_ppm) {
|
|
tile->tile_part[*tp_index].header_tpg = s->g;
|
|
select_stream(s, tile, tp_index, codsty);
|
|
} else if (tile->has_ppt) {
|
|
tile->packed_headers_stream = s->g;
|
|
select_stream(s, tile, tp_index, codsty);
|
|
}
|
|
for (bandno = 0; bandno < rlevel->nbands; bandno++) {
|
|
Jpeg2000Band *band = rlevel->band + bandno;
|
|
Jpeg2000Prec *prec = band->prec + precno;
|
|
|
|
nb_code_blocks = prec->nb_codeblocks_height * prec->nb_codeblocks_width;
|
|
for (cblkno = 0; cblkno < nb_code_blocks; cblkno++) {
|
|
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
|
|
if (!cblk->nb_terminationsinc && !cblk->lengthinc)
|
|
continue;
|
|
for (cwsno = 0; cwsno < cblk->nb_lengthinc; cwsno ++) {
|
|
if (cblk->data_allocated < cblk->length + cblk->lengthinc[cwsno] + 4) {
|
|
size_t new_size = FFMAX(2*cblk->data_allocated, cblk->length + cblk->lengthinc[cwsno] + 4);
|
|
void *new = av_realloc(cblk->data, new_size);
|
|
if (new) {
|
|
cblk->data = new;
|
|
cblk->data_allocated = new_size;
|
|
}
|
|
}
|
|
if ( bytestream2_get_bytes_left(&s->g) < cblk->lengthinc[cwsno]
|
|
|| cblk->data_allocated < cblk->length + cblk->lengthinc[cwsno] + 4
|
|
) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"Block length %"PRIu16" or lengthinc %d is too large, left %d\n",
|
|
cblk->length, cblk->lengthinc[cwsno], bytestream2_get_bytes_left(&s->g));
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
bytestream2_get_bufferu(&s->g, cblk->data + cblk->length, cblk->lengthinc[cwsno]);
|
|
cblk->length += cblk->lengthinc[cwsno];
|
|
cblk->lengthinc[cwsno] = 0;
|
|
if (cblk->nb_terminationsinc) {
|
|
cblk->nb_terminationsinc--;
|
|
cblk->nb_terminations++;
|
|
cblk->data[cblk->length++] = 0xFF;
|
|
cblk->data[cblk->length++] = 0xFF;
|
|
cblk->data_start[cblk->nb_terminations] = cblk->length;
|
|
}
|
|
}
|
|
av_freep(&cblk->lengthinc);
|
|
}
|
|
}
|
|
// Save state of stream
|
|
tile->tile_part[*tp_index].tpg = s->g;
|
|
return 0;
|
|
|
|
skip_data:
|
|
if (codsty->csty & JPEG2000_CSTY_EPH) {
|
|
if (bytestream2_peek_be16(&s->g) == JPEG2000_EPH)
|
|
bytestream2_skip(&s->g, 2);
|
|
else
|
|
av_log(s->avctx, AV_LOG_ERROR, "EPH marker not found. instead %X\n", bytestream2_peek_be32(&s->g));
|
|
}
|
|
if (s->has_ppm) {
|
|
tile->tile_part[*tp_index].header_tpg = s->g;
|
|
select_stream(s, tile, tp_index, codsty);
|
|
} else if (tile->has_ppt) {
|
|
tile->packed_headers_stream = s->g;
|
|
select_stream(s, tile, tp_index, codsty);
|
|
}
|
|
tile->tile_part[*tp_index].tpg = s->g;
|
|
return 0;
|
|
}
|
|
|
|
static int jpeg2000_decode_packets_po_iteration(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
|
|
int RSpoc, int CSpoc,
|
|
int LYEpoc, int REpoc, int CEpoc,
|
|
int Ppoc, int *tp_index)
|
|
{
|
|
int ret = 0;
|
|
int layno, reslevelno, compno, precno, ok_reslevel;
|
|
int x, y;
|
|
int step_x, step_y;
|
|
|
|
switch (Ppoc) {
|
|
case JPEG2000_PGOD_RLCP:
|
|
av_log(s->avctx, AV_LOG_DEBUG, "Progression order RLCP\n");
|
|
ok_reslevel = 1;
|
|
for (reslevelno = RSpoc; ok_reslevel && reslevelno < REpoc; reslevelno++) {
|
|
ok_reslevel = 0;
|
|
for (layno = 0; layno < LYEpoc; layno++) {
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
|
|
if (reslevelno < codsty->nreslevels) {
|
|
Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel +
|
|
reslevelno;
|
|
ok_reslevel = 1;
|
|
for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++)
|
|
if ((ret = jpeg2000_decode_packet(s, tile, tp_index,
|
|
codsty, rlevel,
|
|
precno, layno,
|
|
qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
|
|
qntsty->nguardbits)) < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case JPEG2000_PGOD_LRCP:
|
|
av_log(s->avctx, AV_LOG_DEBUG, "Progression order LRCP\n");
|
|
for (layno = 0; layno < LYEpoc; layno++) {
|
|
ok_reslevel = 1;
|
|
for (reslevelno = RSpoc; ok_reslevel && reslevelno < REpoc; reslevelno++) {
|
|
ok_reslevel = 0;
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
|
|
if (reslevelno < codsty->nreslevels) {
|
|
Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel +
|
|
reslevelno;
|
|
ok_reslevel = 1;
|
|
for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++)
|
|
if ((ret = jpeg2000_decode_packet(s, tile, tp_index,
|
|
codsty, rlevel,
|
|
precno, layno,
|
|
qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
|
|
qntsty->nguardbits)) < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case JPEG2000_PGOD_CPRL:
|
|
av_log(s->avctx, AV_LOG_DEBUG, "Progression order CPRL\n");
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
|
|
step_x = 32;
|
|
step_y = 32;
|
|
|
|
if (RSpoc >= FFMIN(codsty->nreslevels, REpoc))
|
|
continue;
|
|
|
|
for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
|
|
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
|
|
step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
|
|
}
|
|
if (step_x >= 31 || step_y >= 31){
|
|
avpriv_request_sample(s->avctx, "CPRL with large step");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
step_x = 1<<step_x;
|
|
step_y = 1<<step_y;
|
|
|
|
for (y = tile->coord[1][0]; y < tile->coord[1][1]; y = (y/step_y + 1)*step_y) {
|
|
for (x = tile->coord[0][0]; x < tile->coord[0][1]; x = (x/step_x + 1)*step_x) {
|
|
for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
|
|
unsigned prcx, prcy;
|
|
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
int xc = x / s->cdx[compno];
|
|
int yc = y / s->cdy[compno];
|
|
|
|
if (yc % (1LL << (rlevel->log2_prec_height + reducedresno)) && y != tile->coord[1][0]) //FIXME this is a subset of the check
|
|
continue;
|
|
|
|
if (xc % (1LL << (rlevel->log2_prec_width + reducedresno)) && x != tile->coord[0][0]) //FIXME this is a subset of the check
|
|
continue;
|
|
|
|
// check if a precinct exists
|
|
prcx = ff_jpeg2000_ceildivpow2(xc, reducedresno) >> rlevel->log2_prec_width;
|
|
prcy = ff_jpeg2000_ceildivpow2(yc, reducedresno) >> rlevel->log2_prec_height;
|
|
prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> rlevel->log2_prec_width;
|
|
prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> rlevel->log2_prec_height;
|
|
|
|
precno = prcx + rlevel->num_precincts_x * prcy;
|
|
|
|
if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
|
|
prcx, prcy, rlevel->num_precincts_x, rlevel->num_precincts_y);
|
|
continue;
|
|
}
|
|
|
|
for (layno = 0; layno < LYEpoc; layno++) {
|
|
if ((ret = jpeg2000_decode_packet(s, tile, tp_index, codsty, rlevel,
|
|
precno, layno,
|
|
qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
|
|
qntsty->nguardbits)) < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case JPEG2000_PGOD_RPCL:
|
|
av_log(s->avctx, AV_LOG_WARNING, "Progression order RPCL\n");
|
|
ok_reslevel = 1;
|
|
for (reslevelno = RSpoc; ok_reslevel && reslevelno < REpoc; reslevelno++) {
|
|
ok_reslevel = 0;
|
|
step_x = 30;
|
|
step_y = 30;
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
|
|
if (reslevelno < codsty->nreslevels) {
|
|
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
|
|
step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
|
|
}
|
|
}
|
|
step_x = 1<<step_x;
|
|
step_y = 1<<step_y;
|
|
|
|
for (y = tile->coord[1][0]; y < tile->coord[1][1]; y = (y/step_y + 1)*step_y) {
|
|
for (x = tile->coord[0][0]; x < tile->coord[0][1]; x = (x/step_x + 1)*step_x) {
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
|
|
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
unsigned prcx, prcy;
|
|
int trx0, try0;
|
|
|
|
if (!s->cdx[compno] || !s->cdy[compno])
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (reslevelno >= codsty->nreslevels)
|
|
continue;
|
|
|
|
trx0 = ff_jpeg2000_ceildiv(tile->coord[0][0], (int64_t)s->cdx[compno] << reducedresno);
|
|
try0 = ff_jpeg2000_ceildiv(tile->coord[1][0], (int64_t)s->cdy[compno] << reducedresno);
|
|
|
|
if (!(y % ((uint64_t)s->cdy[compno] << (rlevel->log2_prec_height + reducedresno)) == 0 ||
|
|
(y == tile->coord[1][0] && ((int64_t)try0 << reducedresno) % (1ULL << (reducedresno + rlevel->log2_prec_height)))))
|
|
continue;
|
|
|
|
if (!(x % ((uint64_t)s->cdx[compno] << (rlevel->log2_prec_width + reducedresno)) == 0 ||
|
|
(x == tile->coord[0][0] && ((int64_t)trx0 << reducedresno) % (1ULL << (reducedresno + rlevel->log2_prec_width)))))
|
|
continue;
|
|
|
|
// check if a precinct exists
|
|
prcx = ff_jpeg2000_ceildiv(x, (int64_t)s->cdx[compno] << reducedresno) >> rlevel->log2_prec_width;
|
|
prcy = ff_jpeg2000_ceildiv(y, (int64_t)s->cdy[compno] << reducedresno) >> rlevel->log2_prec_height;
|
|
prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> rlevel->log2_prec_width;
|
|
prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> rlevel->log2_prec_height;
|
|
|
|
precno = prcx + rlevel->num_precincts_x * prcy;
|
|
|
|
ok_reslevel = 1;
|
|
if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
|
|
prcx, prcy, rlevel->num_precincts_x, rlevel->num_precincts_y);
|
|
continue;
|
|
}
|
|
|
|
for (layno = 0; layno < LYEpoc; layno++) {
|
|
if ((ret = jpeg2000_decode_packet(s, tile, tp_index,
|
|
codsty, rlevel,
|
|
precno, layno,
|
|
qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
|
|
qntsty->nguardbits)) < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case JPEG2000_PGOD_PCRL:
|
|
av_log(s->avctx, AV_LOG_WARNING, "Progression order PCRL\n");
|
|
step_x = 32;
|
|
step_y = 32;
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
|
|
for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
|
|
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
step_x = FFMIN(step_x, rlevel->log2_prec_width + reducedresno);
|
|
step_y = FFMIN(step_y, rlevel->log2_prec_height + reducedresno);
|
|
}
|
|
}
|
|
if (step_x >= 31 || step_y >= 31){
|
|
avpriv_request_sample(s->avctx, "PCRL with large step");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
step_x = 1<<step_x;
|
|
step_y = 1<<step_y;
|
|
|
|
for (y = tile->coord[1][0]; y < tile->coord[1][1]; y = (y/step_y + 1)*step_y) {
|
|
for (x = tile->coord[0][0]; x < tile->coord[0][1]; x = (x/step_x + 1)*step_x) {
|
|
for (compno = CSpoc; compno < CEpoc; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
|
|
|
|
if (!s->cdx[compno] || !s->cdy[compno])
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
for (reslevelno = RSpoc; reslevelno < FFMIN(codsty->nreslevels, REpoc); reslevelno++) {
|
|
unsigned prcx, prcy;
|
|
uint8_t reducedresno = codsty->nreslevels - 1 -reslevelno; // ==> N_L - r
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
int trx0, try0;
|
|
|
|
trx0 = ff_jpeg2000_ceildiv(tile->coord[0][0], (int64_t)s->cdx[compno] << reducedresno);
|
|
try0 = ff_jpeg2000_ceildiv(tile->coord[1][0], (int64_t)s->cdy[compno] << reducedresno);
|
|
|
|
if (!(y % ((uint64_t)s->cdy[compno] << (rlevel->log2_prec_height + reducedresno)) == 0 ||
|
|
(y == tile->coord[1][0] && ((int64_t)try0 << reducedresno) % (1ULL << (reducedresno + rlevel->log2_prec_height)))))
|
|
continue;
|
|
|
|
if (!(x % ((uint64_t)s->cdx[compno] << (rlevel->log2_prec_width + reducedresno)) == 0 ||
|
|
(x == tile->coord[0][0] && ((int64_t)trx0 << reducedresno) % (1ULL << (reducedresno + rlevel->log2_prec_width)))))
|
|
continue;
|
|
|
|
// check if a precinct exists
|
|
prcx = ff_jpeg2000_ceildiv(x, (int64_t)s->cdx[compno] << reducedresno) >> rlevel->log2_prec_width;
|
|
prcy = ff_jpeg2000_ceildiv(y, (int64_t)s->cdy[compno] << reducedresno) >> rlevel->log2_prec_height;
|
|
prcx -= ff_jpeg2000_ceildivpow2(comp->coord_o[0][0], reducedresno) >> rlevel->log2_prec_width;
|
|
prcy -= ff_jpeg2000_ceildivpow2(comp->coord_o[1][0], reducedresno) >> rlevel->log2_prec_height;
|
|
|
|
precno = prcx + rlevel->num_precincts_x * prcy;
|
|
|
|
if (prcx >= rlevel->num_precincts_x || prcy >= rlevel->num_precincts_y) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "prc %d %d outside limits %d %d\n",
|
|
prcx, prcy, rlevel->num_precincts_x, rlevel->num_precincts_y);
|
|
continue;
|
|
}
|
|
|
|
for (layno = 0; layno < LYEpoc; layno++) {
|
|
if ((ret = jpeg2000_decode_packet(s, tile, tp_index, codsty, rlevel,
|
|
precno, layno,
|
|
qntsty->expn + (reslevelno ? 3 * (reslevelno - 1) + 1 : 0),
|
|
qntsty->nguardbits)) < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
|
|
{
|
|
int ret = AVERROR_BUG;
|
|
int i;
|
|
int tp_index = 0;
|
|
|
|
s->bit_index = 8;
|
|
if (tile->poc.nb_poc) {
|
|
for (i=0; i<tile->poc.nb_poc; i++) {
|
|
Jpeg2000POCEntry *e = &tile->poc.poc[i];
|
|
ret = jpeg2000_decode_packets_po_iteration(s, tile,
|
|
e->RSpoc, e->CSpoc,
|
|
FFMIN(e->LYEpoc, tile->codsty[0].nlayers),
|
|
e->REpoc,
|
|
FFMIN(e->CEpoc, s->ncomponents),
|
|
e->Ppoc, &tp_index
|
|
);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
} else {
|
|
ret = jpeg2000_decode_packets_po_iteration(s, tile,
|
|
0, 0,
|
|
tile->codsty[0].nlayers,
|
|
33,
|
|
s->ncomponents,
|
|
tile->codsty[0].prog_order,
|
|
&tp_index
|
|
);
|
|
}
|
|
/* EOC marker reached */
|
|
bytestream2_skip(&s->g, 2);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* TIER-1 routines */
|
|
static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height,
|
|
int bpno, int bandno,
|
|
int vert_causal_ctx_csty_symbol)
|
|
{
|
|
int mask = 3 << (bpno - 1), y0, x, y;
|
|
|
|
for (y0 = 0; y0 < height; y0 += 4)
|
|
for (x = 0; x < width; x++)
|
|
for (y = y0; y < height && y < y0 + 4; y++) {
|
|
int flags_mask = -1;
|
|
if (vert_causal_ctx_csty_symbol && y == y0 + 3)
|
|
flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S);
|
|
if ((t1->flags[(y+1) * t1->stride + x+1] & JPEG2000_T1_SIG_NB & flags_mask)
|
|
&& !(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
|
|
if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1] & flags_mask, bandno))) {
|
|
int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y+1) * t1->stride + x+1] & flags_mask, &xorbit);
|
|
if (t1->mqc.raw)
|
|
t1->data[(y) * t1->stride + x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask;
|
|
else
|
|
t1->data[(y) * t1->stride + x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ?
|
|
-mask : mask;
|
|
|
|
ff_jpeg2000_set_significance(t1, x, y,
|
|
t1->data[(y) * t1->stride + x] < 0);
|
|
}
|
|
t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_VIS;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void decode_refpass(Jpeg2000T1Context *t1, int width, int height,
|
|
int bpno, int vert_causal_ctx_csty_symbol)
|
|
{
|
|
int phalf, nhalf;
|
|
int y0, x, y;
|
|
|
|
phalf = 1 << (bpno - 1);
|
|
nhalf = -phalf;
|
|
|
|
for (y0 = 0; y0 < height; y0 += 4)
|
|
for (x = 0; x < width; x++)
|
|
for (y = y0; y < height && y < y0 + 4; y++)
|
|
if ((t1->flags[(y + 1) * t1->stride + x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS)) == JPEG2000_T1_SIG) {
|
|
int flags_mask = (vert_causal_ctx_csty_symbol && y == y0 + 3) ?
|
|
~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S) : -1;
|
|
int ctxno = ff_jpeg2000_getrefctxno(t1->flags[(y + 1) * t1->stride + x + 1] & flags_mask);
|
|
int r = ff_mqc_decode(&t1->mqc,
|
|
t1->mqc.cx_states + ctxno)
|
|
? phalf : nhalf;
|
|
t1->data[(y) * t1->stride + x] += t1->data[(y) * t1->stride + x] < 0 ? -r : r;
|
|
t1->flags[(y + 1) * t1->stride + x + 1] |= JPEG2000_T1_REF;
|
|
}
|
|
}
|
|
|
|
static void decode_clnpass(const Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1,
|
|
int width, int height, int bpno, int bandno,
|
|
int seg_symbols, int vert_causal_ctx_csty_symbol)
|
|
{
|
|
int mask = 3 << (bpno - 1), y0, x, y, runlen, dec;
|
|
|
|
for (y0 = 0; y0 < height; y0 += 4) {
|
|
for (x = 0; x < width; x++) {
|
|
int flags_mask = -1;
|
|
if (vert_causal_ctx_csty_symbol)
|
|
flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S);
|
|
if (y0 + 3 < height &&
|
|
!((t1->flags[(y0 + 1) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
|
|
(t1->flags[(y0 + 2) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
|
|
(t1->flags[(y0 + 3) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
|
|
(t1->flags[(y0 + 4) * t1->stride + x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG) & flags_mask))) {
|
|
if (!ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_RL))
|
|
continue;
|
|
runlen = ff_mqc_decode(&t1->mqc,
|
|
t1->mqc.cx_states + MQC_CX_UNI);
|
|
runlen = (runlen << 1) | ff_mqc_decode(&t1->mqc,
|
|
t1->mqc.cx_states +
|
|
MQC_CX_UNI);
|
|
dec = 1;
|
|
} else {
|
|
runlen = 0;
|
|
dec = 0;
|
|
}
|
|
|
|
for (y = y0 + runlen; y < y0 + 4 && y < height; y++) {
|
|
int flags_mask = -1;
|
|
if (vert_causal_ctx_csty_symbol && y == y0 + 3)
|
|
flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE | JPEG2000_T1_SGN_S);
|
|
if (!dec) {
|
|
if (!(t1->flags[(y+1) * t1->stride + x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
|
|
dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[(y+1) * t1->stride + x+1] & flags_mask,
|
|
bandno));
|
|
}
|
|
}
|
|
if (dec) {
|
|
int xorbit;
|
|
int ctxno = ff_jpeg2000_getsgnctxno(t1->flags[(y + 1) * t1->stride + x + 1] & flags_mask,
|
|
&xorbit);
|
|
t1->data[(y) * t1->stride + x] = (ff_mqc_decode(&t1->mqc,
|
|
t1->mqc.cx_states + ctxno) ^
|
|
xorbit)
|
|
? -mask : mask;
|
|
ff_jpeg2000_set_significance(t1, x, y, t1->data[(y) * t1->stride + x] < 0);
|
|
}
|
|
dec = 0;
|
|
t1->flags[(y + 1) * t1->stride + x + 1] &= ~JPEG2000_T1_VIS;
|
|
}
|
|
}
|
|
}
|
|
if (seg_symbols) {
|
|
int val;
|
|
val = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
|
|
val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
|
|
val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
|
|
val = (val << 1) + ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
|
|
if (val != 0xa)
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"Segmentation symbol value incorrect\n");
|
|
}
|
|
}
|
|
|
|
static int decode_cblk(const Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty,
|
|
Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk,
|
|
int width, int height, int bandpos, uint8_t roi_shift)
|
|
{
|
|
int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1 + roi_shift;
|
|
int pass_cnt = 0;
|
|
int vert_causal_ctx_csty_symbol = codsty->cblk_style & JPEG2000_CBLK_VSC;
|
|
int term_cnt = 0;
|
|
int coder_type;
|
|
|
|
av_assert0(width <= 1024U && height <= 1024U);
|
|
av_assert0(width*height <= 4096);
|
|
|
|
memset(t1->data, 0, t1->stride * height * sizeof(*t1->data));
|
|
|
|
/* If code-block contains no compressed data: nothing to do. */
|
|
if (!cblk->length)
|
|
return 0;
|
|
|
|
memset(t1->flags, 0, t1->stride * (height + 2) * sizeof(*t1->flags));
|
|
|
|
cblk->data[cblk->length] = 0xff;
|
|
cblk->data[cblk->length+1] = 0xff;
|
|
ff_mqc_initdec(&t1->mqc, cblk->data, 0, 1);
|
|
|
|
while (passno--) {
|
|
if (bpno < 0 || bpno > 29) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "bpno became invalid\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
switch(pass_t) {
|
|
case 0:
|
|
decode_sigpass(t1, width, height, bpno + 1, bandpos,
|
|
vert_causal_ctx_csty_symbol);
|
|
break;
|
|
case 1:
|
|
decode_refpass(t1, width, height, bpno + 1, vert_causal_ctx_csty_symbol);
|
|
break;
|
|
case 2:
|
|
av_assert2(!t1->mqc.raw);
|
|
decode_clnpass(s, t1, width, height, bpno + 1, bandpos,
|
|
codsty->cblk_style & JPEG2000_CBLK_SEGSYM,
|
|
vert_causal_ctx_csty_symbol);
|
|
break;
|
|
}
|
|
if (codsty->cblk_style & JPEG2000_CBLK_RESET) // XXX no testcase for just this
|
|
ff_mqc_init_contexts(&t1->mqc);
|
|
|
|
if (passno && (coder_type = needs_termination(codsty->cblk_style, pass_cnt))) {
|
|
if (term_cnt >= cblk->nb_terminations) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing needed termination \n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (FFABS(cblk->data + cblk->data_start[term_cnt + 1] - 2 - t1->mqc.bp) > 0) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "Mid mismatch %"PTRDIFF_SPECIFIER" in pass %d of %d\n",
|
|
cblk->data + cblk->data_start[term_cnt + 1] - 2 - t1->mqc.bp,
|
|
pass_cnt, cblk->npasses);
|
|
}
|
|
|
|
ff_mqc_initdec(&t1->mqc, cblk->data + cblk->data_start[++term_cnt], coder_type == 2, 0);
|
|
}
|
|
|
|
pass_t++;
|
|
if (pass_t == 3) {
|
|
bpno--;
|
|
pass_t = 0;
|
|
}
|
|
pass_cnt ++;
|
|
}
|
|
|
|
if (cblk->data + cblk->length - 2 > t1->mqc.bp) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "End mismatch %"PTRDIFF_SPECIFIER"\n",
|
|
cblk->data + cblk->length - 2 - t1->mqc.bp);
|
|
}
|
|
|
|
if (cblk->data + cblk->length < t1->mqc.bp) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "Synthetic End of Stream Marker Read.\n");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static inline int roi_shift_param(Jpeg2000Component *comp,
|
|
int quan_parameter)
|
|
{
|
|
uint8_t roi_shift;
|
|
int val;
|
|
roi_shift = comp->roi_shift;
|
|
val = (quan_parameter < 0)?-quan_parameter:quan_parameter;
|
|
|
|
if (val > (1 << roi_shift))
|
|
return (quan_parameter < 0)?-(val >> roi_shift):(val >> roi_shift);
|
|
return quan_parameter;
|
|
}
|
|
|
|
/* TODO: Verify dequantization for lossless case
|
|
* comp->data can be float or int
|
|
* band->stepsize can be float or int
|
|
* depending on the type of DWT transformation.
|
|
* see ISO/IEC 15444-1:2002 A.6.1 */
|
|
|
|
/* Float dequantization of a codeblock.*/
|
|
static void dequantization_float(int x, int y, Jpeg2000Cblk *cblk,
|
|
Jpeg2000Component *comp,
|
|
Jpeg2000T1Context *t1, Jpeg2000Band *band)
|
|
{
|
|
int i, j;
|
|
int w = cblk->coord[0][1] - cblk->coord[0][0];
|
|
for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
|
|
float *datap = &comp->f_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x];
|
|
int *src = t1->data + j*t1->stride;
|
|
for (i = 0; i < w; ++i)
|
|
datap[i] = src[i] * band->f_stepsize;
|
|
}
|
|
}
|
|
|
|
/* Integer dequantization of a codeblock.*/
|
|
static void dequantization_int(int x, int y, Jpeg2000Cblk *cblk,
|
|
Jpeg2000Component *comp,
|
|
Jpeg2000T1Context *t1, Jpeg2000Band *band)
|
|
{
|
|
int i, j;
|
|
int w = cblk->coord[0][1] - cblk->coord[0][0];
|
|
for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
|
|
int32_t *datap = &comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x];
|
|
int *src = t1->data + j*t1->stride;
|
|
if (band->i_stepsize == 32768) {
|
|
for (i = 0; i < w; ++i)
|
|
datap[i] = src[i] / 2;
|
|
} else {
|
|
// This should be VERY uncommon
|
|
for (i = 0; i < w; ++i)
|
|
datap[i] = (src[i] * (int64_t)band->i_stepsize) / 65536;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void dequantization_int_97(int x, int y, Jpeg2000Cblk *cblk,
|
|
Jpeg2000Component *comp,
|
|
Jpeg2000T1Context *t1, Jpeg2000Band *band)
|
|
{
|
|
int i, j;
|
|
int w = cblk->coord[0][1] - cblk->coord[0][0];
|
|
for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
|
|
int32_t *datap = &comp->i_data[(comp->coord[0][1] - comp->coord[0][0]) * (y + j) + x];
|
|
int *src = t1->data + j*t1->stride;
|
|
for (i = 0; i < w; ++i)
|
|
datap[i] = (src[i] * (int64_t)band->i_stepsize + (1<<15)) >> 16;
|
|
}
|
|
}
|
|
|
|
static inline void mct_decode(const Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
|
|
{
|
|
int i, csize = 1;
|
|
void *src[3];
|
|
|
|
for (i = 1; i < 3; i++) {
|
|
if (tile->codsty[0].transform != tile->codsty[i].transform) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Transforms mismatch, MCT not supported\n");
|
|
return;
|
|
}
|
|
if (memcmp(tile->comp[0].coord, tile->comp[i].coord, sizeof(tile->comp[0].coord))) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Coords mismatch, MCT not supported\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < 3; i++)
|
|
if (tile->codsty[0].transform == FF_DWT97)
|
|
src[i] = tile->comp[i].f_data;
|
|
else
|
|
src[i] = tile->comp[i].i_data;
|
|
|
|
for (i = 0; i < 2; i++)
|
|
csize *= tile->comp[0].coord[i][1] - tile->comp[0].coord[i][0];
|
|
|
|
s->dsp.mct_decode[tile->codsty[0].transform](src[0], src[1], src[2], csize);
|
|
}
|
|
|
|
static inline void roi_scale_cblk(Jpeg2000Cblk *cblk,
|
|
Jpeg2000Component *comp,
|
|
Jpeg2000T1Context *t1)
|
|
{
|
|
int i, j;
|
|
int w = cblk->coord[0][1] - cblk->coord[0][0];
|
|
for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j) {
|
|
int *src = t1->data + j*t1->stride;
|
|
for (i = 0; i < w; ++i)
|
|
src[i] = roi_shift_param(comp, src[i]);
|
|
}
|
|
}
|
|
|
|
static inline int tile_codeblocks(const Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
|
|
{
|
|
Jpeg2000T1Context t1;
|
|
|
|
int compno, reslevelno, bandno;
|
|
|
|
/* Loop on tile components */
|
|
for (compno = 0; compno < s->ncomponents; compno++) {
|
|
Jpeg2000Component *comp = tile->comp + compno;
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
|
|
Jpeg2000QuantStyle *quantsty = tile->qntsty + compno;
|
|
|
|
int coded = 0;
|
|
int subbandno = 0;
|
|
|
|
t1.stride = (1<<codsty->log2_cblk_width) + 2;
|
|
|
|
/* Loop on resolution levels */
|
|
for (reslevelno = 0; reslevelno < codsty->nreslevels2decode; reslevelno++) {
|
|
Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno;
|
|
/* Loop on bands */
|
|
for (bandno = 0; bandno < rlevel->nbands; bandno++, subbandno++) {
|
|
int nb_precincts, precno;
|
|
Jpeg2000Band *band = rlevel->band + bandno;
|
|
int cblkno = 0, bandpos;
|
|
/* See Rec. ITU-T T.800, Equation E-2 */
|
|
int magp = quantsty->expn[subbandno] + quantsty->nguardbits - 1;
|
|
|
|
bandpos = bandno + (reslevelno > 0);
|
|
|
|
if (band->coord[0][0] == band->coord[0][1] ||
|
|
band->coord[1][0] == band->coord[1][1])
|
|
continue;
|
|
|
|
if ((codsty->cblk_style & JPEG2000_CTSY_HTJ2K_F) && magp >= 31) {
|
|
avpriv_request_sample(s->avctx, "JPEG2000_CTSY_HTJ2K_F and magp >= 31");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y;
|
|
/* Loop on precincts */
|
|
for (precno = 0; precno < nb_precincts; precno++) {
|
|
Jpeg2000Prec *prec = band->prec + precno;
|
|
|
|
/* Loop on codeblocks */
|
|
for (cblkno = 0;
|
|
cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height;
|
|
cblkno++) {
|
|
int x, y, ret;
|
|
|
|
Jpeg2000Cblk *cblk = prec->cblk + cblkno;
|
|
|
|
if (codsty->cblk_style & JPEG2000_CTSY_HTJ2K_F)
|
|
ret = ff_jpeg2000_decode_htj2k(s, codsty, &t1, cblk,
|
|
cblk->coord[0][1] - cblk->coord[0][0],
|
|
cblk->coord[1][1] - cblk->coord[1][0],
|
|
magp, comp->roi_shift);
|
|
else
|
|
ret = decode_cblk(s, codsty, &t1, cblk,
|
|
cblk->coord[0][1] - cblk->coord[0][0],
|
|
cblk->coord[1][1] - cblk->coord[1][0],
|
|
bandpos, comp->roi_shift);
|
|
|
|
if (ret)
|
|
coded = 1;
|
|
else
|
|
continue;
|
|
x = cblk->coord[0][0] - band->coord[0][0];
|
|
y = cblk->coord[1][0] - band->coord[1][0];
|
|
|
|
if (comp->roi_shift)
|
|
roi_scale_cblk(cblk, comp, &t1);
|
|
if (codsty->transform == FF_DWT97)
|
|
dequantization_float(x, y, cblk, comp, &t1, band);
|
|
else if (codsty->transform == FF_DWT97_INT)
|
|
dequantization_int_97(x, y, cblk, comp, &t1, band);
|
|
else
|
|
dequantization_int(x, y, cblk, comp, &t1, band);
|
|
} /* end cblk */
|
|
} /*end prec */
|
|
} /* end band */
|
|
} /* end reslevel */
|
|
|
|
/* inverse DWT */
|
|
if (coded)
|
|
ff_dwt_decode(&comp->dwt, codsty->transform == FF_DWT97 ? (void*)comp->f_data : (void*)comp->i_data);
|
|
|
|
} /*end comp */
|
|
return 0;
|
|
}
|
|
|
|
#define WRITE_FRAME(D, PIXEL) \
|
|
static inline void write_frame_ ## D(const Jpeg2000DecoderContext * s, Jpeg2000Tile * tile, \
|
|
AVFrame * picture, int precision) \
|
|
{ \
|
|
const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(s->avctx->pix_fmt); \
|
|
int planar = !!(pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR); \
|
|
int pixelsize = planar ? 1 : pixdesc->nb_components; \
|
|
\
|
|
int compno; \
|
|
int x, y; \
|
|
\
|
|
for (compno = 0; compno < s->ncomponents; compno++) { \
|
|
Jpeg2000Component *comp = tile->comp + compno; \
|
|
Jpeg2000CodingStyle *codsty = tile->codsty + compno; \
|
|
PIXEL *line; \
|
|
float *datap = comp->f_data; \
|
|
int32_t *i_datap = comp->i_data; \
|
|
int cbps = s->cbps[compno]; \
|
|
int w = tile->comp[compno].coord[0][1] - \
|
|
ff_jpeg2000_ceildiv(s->image_offset_x, s->cdx[compno]); \
|
|
int h = tile->comp[compno].coord[1][1] - \
|
|
ff_jpeg2000_ceildiv(s->image_offset_y, s->cdy[compno]); \
|
|
int plane = 0; \
|
|
\
|
|
if (planar) \
|
|
plane = s->cdef[compno] ? s->cdef[compno]-1 : (s->ncomponents-1); \
|
|
\
|
|
y = tile->comp[compno].coord[1][0] - \
|
|
ff_jpeg2000_ceildiv(s->image_offset_y, s->cdy[compno]); \
|
|
line = (PIXEL *)picture->data[plane] + y * (picture->linesize[plane] / sizeof(PIXEL));\
|
|
for (; y < h; y++) { \
|
|
PIXEL *dst; \
|
|
\
|
|
x = tile->comp[compno].coord[0][0] - \
|
|
ff_jpeg2000_ceildiv(s->image_offset_x, s->cdx[compno]); \
|
|
dst = line + x * pixelsize + compno*!planar; \
|
|
\
|
|
if (codsty->transform == FF_DWT97) { \
|
|
for (; x < w; x++) { \
|
|
int val = lrintf(*datap) + (1 << (cbps - 1)); \
|
|
/* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ \
|
|
val = av_clip(val, 0, (1 << cbps) - 1); \
|
|
*dst = val << (precision - cbps); \
|
|
datap++; \
|
|
dst += pixelsize; \
|
|
} \
|
|
} else { \
|
|
for (; x < w; x++) { \
|
|
int val = *i_datap + (1 << (cbps - 1)); \
|
|
/* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ \
|
|
val = av_clip(val, 0, (1 << cbps) - 1); \
|
|
*dst = val << (precision - cbps); \
|
|
i_datap++; \
|
|
dst += pixelsize; \
|
|
} \
|
|
} \
|
|
line += picture->linesize[plane] / sizeof(PIXEL); \
|
|
} \
|
|
} \
|
|
\
|
|
}
|
|
|
|
WRITE_FRAME(8, uint8_t)
|
|
WRITE_FRAME(16, uint16_t)
|
|
|
|
#undef WRITE_FRAME
|
|
|
|
static int jpeg2000_decode_tile(AVCodecContext *avctx, void *td,
|
|
int jobnr, int threadnr)
|
|
{
|
|
const Jpeg2000DecoderContext *s = avctx->priv_data;
|
|
AVFrame *picture = td;
|
|
Jpeg2000Tile *tile = s->tile + jobnr;
|
|
|
|
int ret = tile_codeblocks(s, tile);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* inverse MCT transformation */
|
|
if (tile->codsty[0].mct)
|
|
mct_decode(s, tile);
|
|
|
|
if (s->precision <= 8) {
|
|
write_frame_8(s, tile, picture, 8);
|
|
} else {
|
|
int precision = picture->format == AV_PIX_FMT_XYZ12 ||
|
|
picture->format == AV_PIX_FMT_RGB48 ||
|
|
picture->format == AV_PIX_FMT_RGBA64 ||
|
|
picture->format == AV_PIX_FMT_GRAY16 ? 16 : s->precision;
|
|
|
|
write_frame_16(s, tile, picture, precision);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void jpeg2000_dec_cleanup(Jpeg2000DecoderContext *s)
|
|
{
|
|
int tileno, compno;
|
|
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) {
|
|
if (s->tile[tileno].comp) {
|
|
for (compno = 0; compno < s->ncomponents; compno++) {
|
|
Jpeg2000Component *comp = s->tile[tileno].comp + compno;
|
|
Jpeg2000CodingStyle *codsty = s->tile[tileno].codsty + compno;
|
|
|
|
ff_jpeg2000_cleanup(comp, codsty);
|
|
}
|
|
av_freep(&s->tile[tileno].comp);
|
|
av_freep(&s->tile[tileno].packed_headers);
|
|
s->tile[tileno].packed_headers_size = 0;
|
|
}
|
|
}
|
|
av_freep(&s->packed_headers);
|
|
s->packed_headers_size = 0;
|
|
memset(&s->packed_headers_stream, 0, sizeof(s->packed_headers_stream));
|
|
av_freep(&s->tile);
|
|
memset(s->codsty, 0, sizeof(s->codsty));
|
|
memset(s->qntsty, 0, sizeof(s->qntsty));
|
|
memset(s->properties, 0, sizeof(s->properties));
|
|
memset(&s->poc , 0, sizeof(s->poc));
|
|
s->numXtiles = s->numYtiles = 0;
|
|
s->ncomponents = 0;
|
|
}
|
|
|
|
static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s)
|
|
{
|
|
Jpeg2000CodingStyle *codsty = s->codsty;
|
|
Jpeg2000QuantStyle *qntsty = s->qntsty;
|
|
Jpeg2000POC *poc = &s->poc;
|
|
uint8_t *properties = s->properties;
|
|
|
|
for (;;) {
|
|
int len, ret = 0;
|
|
uint16_t marker;
|
|
int oldpos;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 2) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing EOC\n");
|
|
break;
|
|
}
|
|
|
|
marker = bytestream2_get_be16u(&s->g);
|
|
oldpos = bytestream2_tell(&s->g);
|
|
if (marker >= 0xFF30 && marker <= 0xFF3F)
|
|
continue;
|
|
if (marker == JPEG2000_SOD) {
|
|
Jpeg2000Tile *tile;
|
|
Jpeg2000TilePart *tp;
|
|
|
|
if (!s->tile) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing SIZ\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (s->curtileno < 0) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Missing SOT\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
tile = s->tile + s->curtileno;
|
|
tp = tile->tile_part + tile->tp_idx;
|
|
if (tp->tp_end < s->g.buffer) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid tpend\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (s->has_ppm) {
|
|
uint32_t tp_header_size = bytestream2_get_be32(&s->packed_headers_stream);
|
|
if (bytestream2_get_bytes_left(&s->packed_headers_stream) < tp_header_size)
|
|
return AVERROR_INVALIDDATA;
|
|
bytestream2_init(&tp->header_tpg, s->packed_headers_stream.buffer, tp_header_size);
|
|
bytestream2_skip(&s->packed_headers_stream, tp_header_size);
|
|
}
|
|
if (tile->has_ppt && tile->tp_idx == 0) {
|
|
bytestream2_init(&tile->packed_headers_stream, tile->packed_headers, tile->packed_headers_size);
|
|
}
|
|
|
|
bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_end - s->g.buffer);
|
|
bytestream2_skip(&s->g, tp->tp_end - s->g.buffer);
|
|
|
|
continue;
|
|
}
|
|
if (marker == JPEG2000_EOC)
|
|
break;
|
|
|
|
len = bytestream2_get_be16(&s->g);
|
|
if (len < 2 || bytestream2_get_bytes_left(&s->g) < len - 2) {
|
|
if (s->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Invalid len %d left=%d\n", len, bytestream2_get_bytes_left(&s->g));
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
av_log(s->avctx, AV_LOG_WARNING, "Missing EOC Marker.\n");
|
|
break;
|
|
}
|
|
|
|
switch (marker) {
|
|
case JPEG2000_SIZ:
|
|
if (s->ncomponents) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Duplicate SIZ\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
ret = get_siz(s);
|
|
if (!s->tile)
|
|
s->numXtiles = s->numYtiles = 0;
|
|
break;
|
|
case JPEG2000_COC:
|
|
ret = get_coc(s, codsty, properties);
|
|
break;
|
|
case JPEG2000_COD:
|
|
ret = get_cod(s, codsty, properties);
|
|
break;
|
|
case JPEG2000_RGN:
|
|
ret = get_rgn(s, len);
|
|
break;
|
|
case JPEG2000_QCC:
|
|
ret = get_qcc(s, len, qntsty, properties);
|
|
break;
|
|
case JPEG2000_QCD:
|
|
ret = get_qcd(s, len, qntsty, properties);
|
|
break;
|
|
case JPEG2000_POC:
|
|
ret = get_poc(s, len, poc);
|
|
break;
|
|
case JPEG2000_SOT:
|
|
if (!s->in_tile_headers) {
|
|
s->in_tile_headers = 1;
|
|
if (s->has_ppm) {
|
|
bytestream2_init(&s->packed_headers_stream, s->packed_headers, s->packed_headers_size);
|
|
}
|
|
}
|
|
if (!(ret = get_sot(s, len))) {
|
|
av_assert1(s->curtileno >= 0);
|
|
codsty = s->tile[s->curtileno].codsty;
|
|
qntsty = s->tile[s->curtileno].qntsty;
|
|
poc = &s->tile[s->curtileno].poc;
|
|
properties = s->tile[s->curtileno].properties;
|
|
}
|
|
break;
|
|
case JPEG2000_PLM:
|
|
// the PLM marker is ignored
|
|
case JPEG2000_COM:
|
|
// the comment is ignored
|
|
bytestream2_skip(&s->g, len - 2);
|
|
break;
|
|
case JPEG2000_CRG:
|
|
ret = read_crg(s, len);
|
|
break;
|
|
case JPEG2000_TLM:
|
|
// Tile-part lengths
|
|
ret = get_tlm(s, len);
|
|
break;
|
|
case JPEG2000_PLT:
|
|
// Packet length, tile-part header
|
|
ret = get_plt(s, len);
|
|
break;
|
|
case JPEG2000_PPM:
|
|
// Packed headers, main header
|
|
if (s->in_tile_headers) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "PPM Marker can only be in Main header\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
ret = get_ppm(s, len);
|
|
break;
|
|
case JPEG2000_PPT:
|
|
// Packed headers, tile-part header
|
|
if (s->has_ppm) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"Cannot have both PPT and PPM marker.\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
ret = get_ppt(s, len);
|
|
break;
|
|
default:
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"unsupported marker 0x%.4"PRIX16" at pos 0x%X\n",
|
|
marker, bytestream2_tell(&s->g) - 4);
|
|
bytestream2_skip(&s->g, len - 2);
|
|
break;
|
|
}
|
|
if (bytestream2_tell(&s->g) - oldpos != len || ret) {
|
|
av_log(s->avctx, AV_LOG_ERROR,
|
|
"error during processing marker segment %.4"PRIx16"\n",
|
|
marker);
|
|
return ret ? ret : -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Read bit stream packets --> T2 operation. */
|
|
static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s)
|
|
{
|
|
int ret = 0;
|
|
int tileno;
|
|
|
|
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) {
|
|
Jpeg2000Tile *tile = s->tile + tileno;
|
|
|
|
if ((ret = init_tile(s, tileno)) < 0)
|
|
return ret;
|
|
|
|
if ((ret = jpeg2000_decode_packets(s, tile)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int jp2_find_codestream(Jpeg2000DecoderContext *s)
|
|
{
|
|
uint32_t atom_size, atom, atom_end;
|
|
int search_range = 10;
|
|
|
|
while (search_range
|
|
&&
|
|
bytestream2_get_bytes_left(&s->g) >= 8) {
|
|
atom_size = bytestream2_get_be32u(&s->g);
|
|
atom = bytestream2_get_be32u(&s->g);
|
|
if (atom_size == 1) {
|
|
if (bytestream2_get_be32u(&s->g)) {
|
|
avpriv_request_sample(s->avctx, "Huge atom");
|
|
return 0;
|
|
}
|
|
atom_size = bytestream2_get_be32u(&s->g);
|
|
if (atom_size < 16 || (int64_t)bytestream2_tell(&s->g) + atom_size - 16 > INT_MAX)
|
|
return AVERROR_INVALIDDATA;
|
|
atom_end = bytestream2_tell(&s->g) + atom_size - 16;
|
|
} else {
|
|
if (atom_size < 8 || (int64_t)bytestream2_tell(&s->g) + atom_size - 8 > INT_MAX)
|
|
return AVERROR_INVALIDDATA;
|
|
atom_end = bytestream2_tell(&s->g) + atom_size - 8;
|
|
}
|
|
|
|
if (atom == JP2_CODESTREAM)
|
|
return 1;
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < atom_size || atom_end < atom_size)
|
|
return 0;
|
|
|
|
if (atom == JP2_HEADER &&
|
|
atom_size >= 16) {
|
|
uint32_t atom2_size, atom2, atom2_end;
|
|
do {
|
|
if (bytestream2_get_bytes_left(&s->g) < 8)
|
|
break;
|
|
atom2_size = bytestream2_get_be32u(&s->g);
|
|
atom2 = bytestream2_get_be32u(&s->g);
|
|
atom2_end = bytestream2_tell(&s->g) + atom2_size - 8;
|
|
if (atom2_size < 8 || atom2_end > atom_end || atom2_end < atom2_size)
|
|
break;
|
|
atom2_size -= 8;
|
|
if (atom2 == JP2_CODESTREAM) {
|
|
return 1;
|
|
} else if (atom2 == MKBETAG('c','o','l','r') && atom2_size >= 7) {
|
|
int method = bytestream2_get_byteu(&s->g);
|
|
bytestream2_skipu(&s->g, 2);
|
|
if (method == 1) {
|
|
s->colour_space = bytestream2_get_be32u(&s->g);
|
|
}
|
|
} else if (atom2 == MKBETAG('p','c','l','r') && atom2_size >= 6) {
|
|
int i, size, colour_count, colour_channels, colour_depth[3];
|
|
colour_count = bytestream2_get_be16u(&s->g);
|
|
colour_channels = bytestream2_get_byteu(&s->g);
|
|
// FIXME: Do not ignore channel_sign
|
|
colour_depth[0] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1;
|
|
colour_depth[1] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1;
|
|
colour_depth[2] = (bytestream2_get_byteu(&s->g) & 0x7f) + 1;
|
|
size = (colour_depth[0] + 7 >> 3) * colour_count +
|
|
(colour_depth[1] + 7 >> 3) * colour_count +
|
|
(colour_depth[2] + 7 >> 3) * colour_count;
|
|
if (colour_count > AVPALETTE_COUNT ||
|
|
colour_channels != 3 ||
|
|
colour_depth[0] > 16 ||
|
|
colour_depth[1] > 16 ||
|
|
colour_depth[2] > 16 ||
|
|
atom2_size < size) {
|
|
avpriv_request_sample(s->avctx, "Unknown palette");
|
|
bytestream2_seek(&s->g, atom2_end, SEEK_SET);
|
|
continue;
|
|
}
|
|
s->pal8 = 1;
|
|
for (i = 0; i < colour_count; i++) {
|
|
uint32_t r, g, b;
|
|
if (colour_depth[0] <= 8) {
|
|
r = bytestream2_get_byteu(&s->g) << 8 - colour_depth[0];
|
|
r |= r >> colour_depth[0];
|
|
} else {
|
|
r = bytestream2_get_be16u(&s->g) >> colour_depth[0] - 8;
|
|
}
|
|
if (colour_depth[1] <= 8) {
|
|
g = bytestream2_get_byteu(&s->g) << 8 - colour_depth[1];
|
|
g |= g >> colour_depth[1];
|
|
} else {
|
|
g = bytestream2_get_be16u(&s->g) >> colour_depth[1] - 8;
|
|
}
|
|
if (colour_depth[2] <= 8) {
|
|
b = bytestream2_get_byteu(&s->g) << 8 - colour_depth[2];
|
|
b |= b >> colour_depth[2];
|
|
} else {
|
|
b = bytestream2_get_be16u(&s->g) >> colour_depth[2] - 8;
|
|
}
|
|
s->palette[i] = 0xffu << 24 | r << 16 | g << 8 | b;
|
|
}
|
|
} else if (atom2 == MKBETAG('c','d','e','f') && atom2_size >= 2) {
|
|
int n = bytestream2_get_be16u(&s->g);
|
|
for (; n>0; n--) {
|
|
int cn = bytestream2_get_be16(&s->g);
|
|
int av_unused typ = bytestream2_get_be16(&s->g);
|
|
int asoc = bytestream2_get_be16(&s->g);
|
|
if (cn < 4 && asoc < 4)
|
|
s->cdef[cn] = asoc;
|
|
}
|
|
} else if (atom2 == MKBETAG('r','e','s',' ') && atom2_size >= 18) {
|
|
int64_t vnum, vden, hnum, hden, vexp, hexp;
|
|
uint32_t resx;
|
|
bytestream2_skip(&s->g, 4);
|
|
resx = bytestream2_get_be32u(&s->g);
|
|
if (resx != MKBETAG('r','e','s','c') && resx != MKBETAG('r','e','s','d')) {
|
|
bytestream2_seek(&s->g, atom2_end, SEEK_SET);
|
|
continue;
|
|
}
|
|
vnum = bytestream2_get_be16u(&s->g);
|
|
vden = bytestream2_get_be16u(&s->g);
|
|
hnum = bytestream2_get_be16u(&s->g);
|
|
hden = bytestream2_get_be16u(&s->g);
|
|
vexp = bytestream2_get_byteu(&s->g);
|
|
hexp = bytestream2_get_byteu(&s->g);
|
|
if (!vnum || !vden || !hnum || !hden) {
|
|
bytestream2_seek(&s->g, atom2_end, SEEK_SET);
|
|
av_log(s->avctx, AV_LOG_WARNING, "RES box invalid\n");
|
|
continue;
|
|
}
|
|
if (vexp > hexp) {
|
|
vexp -= hexp;
|
|
hexp = 0;
|
|
} else {
|
|
hexp -= vexp;
|
|
vexp = 0;
|
|
}
|
|
if ( INT64_MAX / (hnum * vden) > pow(10, hexp)
|
|
&& INT64_MAX / (vnum * hden) > pow(10, vexp))
|
|
av_reduce(&s->sar.den, &s->sar.num,
|
|
hnum * vden * pow(10, hexp),
|
|
vnum * hden * pow(10, vexp),
|
|
INT32_MAX);
|
|
}
|
|
bytestream2_seek(&s->g, atom2_end, SEEK_SET);
|
|
} while (atom_end - atom2_end >= 8);
|
|
} else {
|
|
search_range--;
|
|
}
|
|
bytestream2_seek(&s->g, atom_end, SEEK_SET);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int jpeg2000_decode_init(AVCodecContext *avctx)
|
|
{
|
|
Jpeg2000DecoderContext *s = avctx->priv_data;
|
|
|
|
if (avctx->lowres)
|
|
av_log(avctx, AV_LOG_WARNING, "lowres is overriden by reduction_factor but set anyway\n");
|
|
if (!s->reduction_factor && avctx->lowres < JPEG2000_MAX_RESLEVELS) {
|
|
s->reduction_factor = avctx->lowres;
|
|
}
|
|
if (avctx->lowres != s->reduction_factor && avctx->lowres)
|
|
return AVERROR(EINVAL);
|
|
|
|
ff_jpeg2000dsp_init(&s->dsp);
|
|
ff_jpeg2000_init_tier1_luts();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int jpeg2000_decode_frame(AVCodecContext *avctx, AVFrame *picture,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
Jpeg2000DecoderContext *s = avctx->priv_data;
|
|
int ret;
|
|
|
|
s->avctx = avctx;
|
|
bytestream2_init(&s->g, avpkt->data, avpkt->size);
|
|
s->curtileno = -1;
|
|
memset(s->cdef, -1, sizeof(s->cdef));
|
|
|
|
if (bytestream2_get_bytes_left(&s->g) < 2) {
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
|
|
// check if the image is in jp2 format
|
|
if (bytestream2_get_bytes_left(&s->g) >= 12 &&
|
|
(bytestream2_get_be32u(&s->g) == 12) &&
|
|
(bytestream2_get_be32u(&s->g) == JP2_SIG_TYPE) &&
|
|
(bytestream2_get_be32u(&s->g) == JP2_SIG_VALUE)) {
|
|
if (!jp2_find_codestream(s)) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Could not find Jpeg2000 codestream atom.\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
} else {
|
|
bytestream2_seek(&s->g, 0, SEEK_SET);
|
|
}
|
|
|
|
while (bytestream2_get_bytes_left(&s->g) >= 3 && bytestream2_peek_be16(&s->g) != JPEG2000_SOC)
|
|
bytestream2_skip(&s->g, 1);
|
|
|
|
if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) {
|
|
av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto end;
|
|
}
|
|
if (ret = jpeg2000_read_main_headers(s))
|
|
goto end;
|
|
|
|
if (s->sar.num && s->sar.den)
|
|
avctx->sample_aspect_ratio = s->sar;
|
|
s->sar.num = s->sar.den = 0;
|
|
|
|
if (avctx->skip_frame >= AVDISCARD_ALL) {
|
|
jpeg2000_dec_cleanup(s);
|
|
return avpkt->size;
|
|
}
|
|
|
|
/* get picture buffer */
|
|
if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0)
|
|
goto end;
|
|
picture->pict_type = AV_PICTURE_TYPE_I;
|
|
picture->flags |= AV_FRAME_FLAG_KEY;
|
|
|
|
if (ret = jpeg2000_read_bitstream_packets(s))
|
|
goto end;
|
|
|
|
for (int x = 0; x < s->ncomponents; x++) {
|
|
if (s->cdef[x] < 0) {
|
|
for (x = 0; x < s->ncomponents; x++) {
|
|
s->cdef[x] = x + 1;
|
|
}
|
|
if ((s->ncomponents & 1) == 0)
|
|
s->cdef[s->ncomponents-1] = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
avctx->execute2(avctx, jpeg2000_decode_tile, picture, NULL, s->numXtiles * s->numYtiles);
|
|
|
|
jpeg2000_dec_cleanup(s);
|
|
|
|
*got_frame = 1;
|
|
|
|
if (s->avctx->pix_fmt == AV_PIX_FMT_PAL8)
|
|
memcpy(picture->data[1], s->palette, 256 * sizeof(uint32_t));
|
|
|
|
return bytestream2_tell(&s->g);
|
|
|
|
end:
|
|
jpeg2000_dec_cleanup(s);
|
|
return ret;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(Jpeg2000DecoderContext, x)
|
|
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
|
|
|
|
static const AVOption options[] = {
|
|
{ "lowres", "Lower the decoding resolution by a power of two",
|
|
OFFSET(reduction_factor), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, JPEG2000_MAX_RESLEVELS - 1, VD },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass jpeg2000_class = {
|
|
.class_name = "jpeg2000",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
const FFCodec ff_jpeg2000_decoder = {
|
|
.p.name = "jpeg2000",
|
|
CODEC_LONG_NAME("JPEG 2000"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_JPEG2000,
|
|
.p.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_DR1,
|
|
.priv_data_size = sizeof(Jpeg2000DecoderContext),
|
|
.init = jpeg2000_decode_init,
|
|
FF_CODEC_DECODE_CB(jpeg2000_decode_frame),
|
|
.p.priv_class = &jpeg2000_class,
|
|
.p.max_lowres = 5,
|
|
.p.profiles = NULL_IF_CONFIG_SMALL(ff_jpeg2000_profiles),
|
|
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
|
|
};
|