* JPEG 2000 image decoder
*/
+#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#define HAD_QCC 0x02
typedef struct Jpeg2000TilePart {
- uint16_t tp_idx; // Tile-part index
uint8_t tile_index; // Tile index who refers the tile-part
- uint32_t tp_len; // Length of tile-part
+ const uint8_t *tp_end;
GetByteContext tpg; // bit stream in tile-part
} Jpeg2000TilePart;
uint8_t properties[4];
Jpeg2000CodingStyle codsty[4];
Jpeg2000QuantStyle qntsty[4];
- Jpeg2000TilePart tile_part[3];
+ Jpeg2000TilePart tile_part[4];
+ uint16_t tp_idx; // Tile-part index
} Jpeg2000Tile;
typedef struct Jpeg2000DecoderContext {
int bit_index;
- int16_t curtileno;
+ int curtileno;
+
Jpeg2000Tile *tile;
/*options parameters*/
- int16_t lowres;
- int16_t reduction_factor;
+ int lowres;
+ int reduction_factor;
} Jpeg2000DecoderContext;
/* get_bits functions for JPEG2000 packet bitstream
Jpeg2000TgtNode *stack[30];
int sp = -1, curval = 0;
+ if (!node)
+ return AVERROR(EINVAL);
+
while (node && !node->vis) {
stack[++sp] = node;
node = node->parent;
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) == 1;
+ 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] != 1 || s->cdy[i] != 1) {
+ av_log(s->avctx, AV_LOG_ERROR, "unsupported/ CDxy values %d %d for component %d\n", s->cdx[i], s->cdy[i], i);
+ if (!s->cdx[i] || !s->cdy[i])
+ return AVERROR_INVALIDDATA;
+ }
}
s->numXtiles = ff_jpeg2000_ceildiv(s->width - s->tile_offset_x, s->tile_width);
s->avctx->height = ff_jpeg2000_ceildivpow2(s->height - s->image_offset_y,
s->reduction_factor);
- switch (s->avctx->profile) {
- case FF_PROFILE_JPEG2000_DCINEMA_2K:
- case FF_PROFILE_JPEG2000_DCINEMA_4K:
- /* XYZ color-space for digital cinema profiles */
- s->avctx->pix_fmt = AV_PIX_FMT_XYZ12;
+ switch(s->ncomponents) {
+ case 1:
+ if (s->precision > 8)
+ s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
+ else
+ s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
break;
- default:
- /* For other profiles selects color-space according number of
- * components and bit depth precision. */
- switch (s->ncomponents) {
- case 1:
- if (s->precision > 8)
- s->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
- else
- s->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
+ case 3:
+ switch (s->avctx->profile) {
+ case FF_PROFILE_JPEG2000_DCINEMA_2K:
+ case FF_PROFILE_JPEG2000_DCINEMA_4K:
+ /* XYZ color-space for digital cinema profiles */
+ s->avctx->pix_fmt = AV_PIX_FMT_XYZ12;
break;
- case 3:
+ default:
if (s->precision > 8)
s->avctx->pix_fmt = AV_PIX_FMT_RGB48;
else
s->avctx->pix_fmt = AV_PIX_FMT_RGB24;
break;
- case 4:
- s->avctx->pix_fmt = AV_PIX_FMT_BGRA;
- break;
- default:
- /* pixel format can not be identified */
- s->avctx->pix_fmt = AV_PIX_FMT_NONE;
- break;
}
break;
+ case 4:
+ s->avctx->pix_fmt = AV_PIX_FMT_RGBA;
+ break;
+ default:
+ /* pixel format can not be identified */
+ s->avctx->pix_fmt = AV_PIX_FMT_NONE;
+ break;
}
return 0;
}
c->cblk_style = bytestream2_get_byteu(&s->g);
if (c->cblk_style != 0) { // cblk style
- av_log(s->avctx, AV_LOG_ERROR, "no extra cblk styles supported\n");
- return -1;
+ av_log(s->avctx, AV_LOG_WARNING, "extra cblk styles %X\n", c->cblk_style);
}
c->transform = bytestream2_get_byteu(&s->g); // DWT transformation type
/* set integer 9/7 DWT in case of BITEXACT flag */
uint8_t *properties)
{
Jpeg2000CodingStyle tmp;
- int compno;
+ int compno, ret;
if (bytestream2_get_bytes_left(&s->g) < 5)
return AVERROR(EINVAL);
tmp.nlayers = bytestream2_get_be16u(&s->g);
tmp.mct = bytestream2_get_byteu(&s->g); // multiple component transformation
- get_cox(s, &tmp);
+ if (tmp.mct && s->ncomponents < 3) {
+ av_log(s->avctx, AV_LOG_ERROR, "MCT %d with too few components (%d)\n", tmp.mct, s->ncomponents);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((ret = get_cox(s, &tmp)) < 0)
+ return ret;
+
for (compno = 0; compno < s->ncomponents; compno++)
if (!(properties[compno] & HAD_COC))
memcpy(c + compno, &tmp, sizeof(tmp));
static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c,
uint8_t *properties)
{
- int compno;
+ int compno, ret;
if (bytestream2_get_bytes_left(&s->g) < 2)
return AVERROR(EINVAL);
c += compno;
c->csty = bytestream2_get_byteu(&s->g);
- get_cox(s, c);
+
+ if ((ret = get_cox(s, c)) < 0)
+ return ret;
properties[compno] |= HAD_COC;
return 0;
return AVERROR(EINVAL);
compno = bytestream2_get_byteu(&s->g);
+ if (compno >= s->ncomponents) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid compno\n");
+ return AVERROR_INVALIDDATA;
+ }
+
properties[compno] |= HAD_QCC;
return get_qcx(s, n - 1, q + compno);
}
s->curtileno=0;
return AVERROR(EINVAL);
}
- if (Isot) {
- av_log(s->avctx, AV_LOG_ERROR,
- "Not a DCINEMA JP2K file: more than one tile\n");
- return -1;
- }
Psot = bytestream2_get_be32u(&s->g); // Psot
TPsot = bytestream2_get_byteu(&s->g); // TPsot
return AVERROR_PATCHWELCOME;
}
+ s->tile[s->curtileno].tp_idx = TPsot;
tp = s->tile[s->curtileno].tile_part + TPsot;
tp->tile_index = Isot;
- tp->tp_len = Psot;
- tp->tp_idx = TPsot;
-
- /* Start of bit stream. Pointer to SOD marker
- * Check SOD marker is present. */
- if (JPEG2000_SOD == bytestream2_get_be16(&s->g)) {
- bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_len - n - 4);
- bytestream2_skip(&s->g, tp->tp_len - n - 4);
- } else {
- av_log(s->avctx, AV_LOG_ERROR, "SOD marker not found \n");
- return -1;
- }
+ tp->tp_end = s->g.buffer + Psot - n - 2;
+
+ if (!TPsot) {
+ Jpeg2000Tile *tile = s->tile + s->curtileno;
- /* End address of bit stream =
- * start address + (Psot - size of SOT HEADER(n)
- * - size of SOT MARKER(2) - size of SOD marker(2) */
+ /* copy defaults */
+ memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(Jpeg2000CodingStyle));
+ memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(Jpeg2000QuantStyle));
+ }
return 0;
}
int tilex = tileno % s->numXtiles;
int tiley = tileno / s->numXtiles;
Jpeg2000Tile *tile = s->tile + tileno;
- Jpeg2000CodingStyle *codsty;
- Jpeg2000QuantStyle *qntsty;
if (!tile->comp)
return AVERROR(ENOMEM);
- /* copy codsty, qnsty to tile. TODO: Is it the best way?
- * codsty, qnsty is an array of 4 structs Jpeg2000CodingStyle
- * and Jpeg2000QuantStyle */
- memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(*codsty));
- memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(*qntsty));
-
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
- codsty = tile->codsty + compno;
- qntsty = tile->qntsty + compno;
comp->coord_o[0][0] = FFMAX(tilex * s->tile_width + s->tile_offset_x, s->image_offset_x);
comp->coord_o[0][1] = FFMIN((tilex + 1) * s->tile_width + s->tile_offset_x, s->width);
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++) {
static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
{
int layno, reslevelno, compno, precno, ok_reslevel;
- uint8_t prog_order = tile->codsty[0].prog_order;
- uint16_t x;
- uint16_t y;
+ int x, y;
s->bit_index = 8;
- switch (prog_order) {
+ switch (tile->codsty[0].prog_order) {
case JPEG2000_PGOD_LRCP:
+ case JPEG2000_PGOD_RLCP:
for (layno = 0; layno < tile->codsty[0].nlayers; layno++) {
ok_reslevel = 1;
for (reslevelno = 0; ok_reslevel; reslevelno++) {
Jpeg2000QuantStyle *qntsty = tile->qntsty + compno;
if (reslevelno < codsty->nreslevels) {
Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel +
- reslevelno;
+ reslevelno;
ok_reslevel = 1;
for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++)
if (jpeg2000_decode_packet(s,
/* TIER-1 routines */
static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height,
- int bpno, int bandno)
+ int bpno, int bandno, int bpass_csty_symbol,
+ 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++)
- if ((t1->flags[y + 1][x + 1] & JPEG2000_T1_SIG_NB)
- && !(t1->flags[y + 1][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][x + 1],
- bandno))) {
- int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y + 1][x + 1],
- &xorbit);
-
- t1->data[y][x] =
- (ff_mqc_decode(&t1->mqc,
- t1->mqc.cx_states + ctxno) ^ xorbit)
- ? -mask : mask;
+ for (y = y0; y < height && y < y0 + 4; y++) {
+ if ((t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB)
+ && !(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
+ 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);
+ if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))) {
+ int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit);
+ if (bpass_csty_symbol)
+ t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask;
+ else
+ t1->data[y][x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ?
+ -mask : mask;
ff_jpeg2000_set_significance(t1, x, y,
t1->data[y][x] < 0);
}
t1->flags[y + 1][x + 1] |= JPEG2000_T1_VIS;
}
+ }
}
static void decode_refpass(Jpeg2000T1Context *t1, int width, int height,
static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1,
int width, int height, int bpno, int bandno,
- int seg_symbols)
+ 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 (y0 = 0; y0 < height; y0 += 4) {
for (x = 0; x < width; x++) {
if (y0 + 3 < height &&
!((t1->flags[y0 + 1][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) ||
for (y = y0 + runlen; y < y0 + 4 && y < height; y++) {
if (!dec) {
- if (!(t1->flags[y + 1][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][x + 1],
- bandno));
+ if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) {
+ 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);
+ dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask,
+ bandno));
+ }
}
if (dec) {
int xorbit;
t1->flags[y + 1][x + 1] &= ~JPEG2000_T1_VIS;
}
}
+ }
if (seg_symbols) {
int val;
val = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI);
Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk,
int width, int height, int bandpos)
{
- int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y;
+ int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y, clnpass_cnt = 0;
+ int bpass_csty_symbol = JPEG2000_CBLK_BYPASS & codsty->cblk_style;
+ int vert_causal_ctx_csty_symbol = JPEG2000_CBLK_VSC & codsty->cblk_style;
for (y = 0; y < height; y++)
- memset(t1->data[y], 0, width * sizeof(width));
+ memset(t1->data[y], 0, width * sizeof(**t1->data));
/* If code-block contains no compressed data: nothing to do. */
if (!cblk->length)
return 0;
- for (y = 0; y < height + 2; y++)
- memset(t1->flags[y], 0, (width + 2) * sizeof(width));
+ for (y = 0; y < height+2; y++)
+ memset(t1->flags[y], 0, (width + 2)*sizeof(**t1->flags));
+
+ cblk->data[cblk->length] = 0xff;
+ cblk->data[cblk->length+1] = 0xff;
ff_mqc_initdec(&t1->mqc, cblk->data);
- cblk->data[cblk->length] = 0xff;
- cblk->data[cblk->length + 1] = 0xff;
while (passno--) {
- switch (pass_t) {
+ switch(pass_t) {
case 0:
- decode_sigpass(t1, width, height, bpno + 1, bandpos);
+ decode_sigpass(t1, width, height, bpno + 1, bandpos,
+ bpass_csty_symbol && (clnpass_cnt >= 4), vert_causal_ctx_csty_symbol);
break;
case 1:
decode_refpass(t1, width, height, bpno + 1);
+ if (bpass_csty_symbol && clnpass_cnt >= 4)
+ ff_mqc_initdec(&t1->mqc, cblk->data);
break;
case 2:
decode_clnpass(s, t1, width, height, bpno + 1, bandpos,
- codsty->cblk_style & JPEG2000_CBLK_SEGSYM);
+ codsty->cblk_style & JPEG2000_CBLK_SEGSYM, vert_causal_ctx_csty_symbol);
+ clnpass_cnt = clnpass_cnt + 1;
+ if (bpass_csty_symbol && clnpass_cnt >= 4)
+ ff_mqc_initdec(&t1->mqc, cblk->data);
break;
}
Jpeg2000Component *comp,
Jpeg2000T1Context *t1, Jpeg2000Band *band)
{
- int i, j, idx;
- float *datap = &comp->data[(comp->coord[0][1] - comp->coord[0][0]) * y + x];
- for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j)
- for (i = 0; i < (cblk->coord[0][1] - cblk->coord[0][0]); ++i) {
- idx = (comp->coord[0][1] - comp->coord[0][0]) * j + i;
- datap[idx] = (float)(t1->data[j][i]) * band->f_stepsize;
- }
+ 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];
+ for (i = 0; i < w; ++i)
+ datap[i] = src[i] * band->f_stepsize;
+ }
}
/* Integer dequantization of a codeblock.*/
Jpeg2000Component *comp,
Jpeg2000T1Context *t1, Jpeg2000Band *band)
{
- int i, j, idx;
- int32_t *datap =
- (int32_t *) &comp->data[(comp->coord[0][1] - comp->coord[0][0]) * y + x];
- for (j = 0; j < (cblk->coord[1][1] - cblk->coord[1][0]); ++j)
- for (i = 0; i < (cblk->coord[0][1] - cblk->coord[0][0]); ++i) {
- idx = (comp->coord[0][1] - comp->coord[0][0]) * j + i;
- datap[idx] =
- ((int32_t)(t1->data[j][i]) * band->i_stepsize + (1 << 15)) >> 16;
- }
+ 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];
+ for (i = 0; i < w; ++i)
+ datap[i] = (src[i] * band->i_stepsize + (1 << 15)) >> 16;
+ }
}
/* Inverse ICT parameters in float and integer.
for (i = 0; i < 3; i++)
if (tile->codsty[0].transform == FF_DWT97)
- srcf[i] = tile->comp[i].data;
+ srcf[i] = tile->comp[i].f_data;
else
- src[i] = (int32_t *)tile->comp[i].data;
+ 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];
+
switch (tile->codsty[0].transform) {
case FF_DWT97:
for (i = 0; i < csize; i++) {
uint8_t *line;
Jpeg2000T1Context t1;
- /* Loop on tile components */
+ /* Loop on tile components */
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
+
/* 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++) {
- uint16_t nb_precincts, precno;
+ int nb_precincts, precno;
Jpeg2000Band *band = rlevel->band + bandno;
int cblkno = 0, bandpos;
+
bandpos = bandno + (reslevelno > 0);
+ if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1])
+ continue;
+
nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y;
/* Loop on precincts */
for (precno = 0; precno < nb_precincts; precno++) {
} /* end reslevel */
/* inverse DWT */
- ff_dwt_decode(&comp->dwt, comp->data);
+ ff_dwt_decode(&comp->dwt, codsty->transform == FF_DWT97 ? (void*)comp->f_data : (void*)comp->i_data);
} /*end comp */
/* inverse MCT transformation */
if (tile->codsty[0].mct)
mct_decode(s, tile);
- if (s->avctx->pix_fmt == AV_PIX_FMT_BGRA) // RGBA -> BGRA
- FFSWAP(float *, tile->comp[0].data, tile->comp[2].data);
-
if (s->precision <= 8) {
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
- float *datap = comp->data;
- int32_t *i_datap = (int32_t *) comp->data;
+ Jpeg2000CodingStyle *codsty = tile->codsty + compno;
+ 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] - s->image_offset_x;
+
y = tile->comp[compno].coord[1][0] - s->image_offset_y;
line = picture->data[0] + y * picture->linesize[0];
for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y += s->cdy[compno]) {
x = tile->comp[compno].coord[0][0] - s->image_offset_x;
dst = line + x * s->ncomponents + compno;
- for (; x < tile->comp[compno].coord[0][1] - s->image_offset_x; x += s->cdx[compno]) {
- int val;
- /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */
- if (tile->codsty->transform == FF_DWT97)
- val = lrintf(*datap) + (1 << (s->cbps[compno] - 1));
- else
- val = *i_datap + (1 << (s->cbps[compno] - 1));
- val = av_clip(val, 0, (1 << s->cbps[compno]) - 1);
- *dst = val << (8 - s->cbps[compno]);
- datap++;
- i_datap++;
- dst += s->ncomponents;
+ if (codsty->transform == FF_DWT97) {
+ for (; x < w; x += s->cdx[compno]) {
+ 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 << (8 - cbps);
+ datap++;
+ dst += s->ncomponents;
+ }
+ } else {
+ for (; x < w; x += s->cdx[compno]) {
+ 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 << (8 - cbps);
+ i_datap++;
+ dst += s->ncomponents;
+ }
}
line += picture->linesize[0];
}
} else {
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
- float *datap = comp->data;
- int32_t *i_datap = (int32_t *) comp->data;
+ Jpeg2000CodingStyle *codsty = tile->codsty + compno;
+ float *datap = comp->f_data;
+ int32_t *i_datap = comp->i_data;
uint16_t *linel;
+ int cbps = s->cbps[compno];
+ int w = tile->comp[compno].coord[0][1] - s->image_offset_x;
y = tile->comp[compno].coord[1][0] - s->image_offset_y;
linel = (uint16_t *)picture->data[0] + y * (picture->linesize[0] >> 1);
for (; y < tile->comp[compno].coord[1][1] - s->image_offset_y; y += s->cdy[compno]) {
uint16_t *dst;
+
x = tile->comp[compno].coord[0][0] - s->image_offset_x;
dst = linel + (x * s->ncomponents + compno);
- for (; x < s->avctx->width; x += s->cdx[compno]) {
- int val;
- /* DC level shift and clip see ISO 15444-1:2002 G.1.2 */
- if (tile->codsty->transform == FF_DWT97)
- val = lrintf(*datap) + (1 << (s->cbps[compno] - 1));
- else
- val = *i_datap + (1 << (s->cbps[compno] - 1));
- val = av_clip(val, 0, (1 << s->cbps[compno]) - 1);
- /* align 12 bit values in little-endian mode */
- *dst = val << (16 - s->cbps[compno]);
- datap++;
- i_datap++;
- dst += s->ncomponents;
+ if (codsty->transform == FF_DWT97) {
+ for (; x < w; x += s-> cdx[compno]) {
+ 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);
+ /* align 12 bit values in little-endian mode */
+ *dst = val << (16 - cbps);
+ datap++;
+ dst += s->ncomponents;
+ }
+ } else {
+ for (; x < w; x += s-> cdx[compno]) {
+ 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);
+ /* align 12 bit values in little-endian mode */
+ *dst = val << (16 - cbps);
+ i_datap++;
+ dst += s->ncomponents;
+ }
}
linel += picture->linesize[0] >> 1;
}
}
}
+
return 0;
}
av_freep(&s->tile[tileno].comp);
}
av_freep(&s->tile);
+ s->numXtiles = s->numYtiles = 0;
}
static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s)
marker = bytestream2_get_be16u(&s->g);
oldpos = bytestream2_tell(&s->g);
+ if (marker == JPEG2000_SOD) {
+ Jpeg2000Tile *tile;
+ Jpeg2000TilePart *tp;
+
+ 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;
+ 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;
ret = get_qcd(s, len, qntsty, properties);
break;
case JPEG2000_SOT:
- ret = get_sot(s, len);
+ if (!(ret = get_sot(s, len))) {
+ av_assert1(s->curtileno >= 0);
+ codsty = s->tile[s->curtileno].codsty;
+ qntsty = s->tile[s->curtileno].qntsty;
+ properties = s->tile[s->curtileno].properties;
+ }
break;
case JPEG2000_COM:
// the comment is ignored
bytestream2_skip(&s->g, len - 2);
break;
}
- if (((bytestream2_tell(&s->g) - oldpos != len) && (marker != JPEG2000_SOT)) || ret) {
+ if (bytestream2_tell(&s->g) - oldpos != len || ret) {
av_log(s->avctx, AV_LOG_ERROR,
"error during processing marker segment %.4x\n", marker);
return ret ? ret : -1;
static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s)
{
int ret = 0;
- Jpeg2000Tile *tile = s->tile + s->curtileno;
+ int tileno;
- if (ret = init_tile(s, s->curtileno))
- return ret;
- if (ret = jpeg2000_decode_packets(s, tile))
- return ret;
+ for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) {
+ Jpeg2000Tile *tile = s->tile + tileno;
+
+ if (ret = init_tile(s, tileno))
+ return ret;
+
+ s->g = tile->tile_part[0].tpg;
+ if (ret = jpeg2000_decode_packets(s, tile))
+ return ret;
+ }
return 0;
}
s->avctx = avctx;
bytestream2_init(&s->g, avpkt->data, avpkt->size);
- s->curtileno = 0; // TODO: only one tile in DCI JP2K. to implement for more tiles
+ s->curtileno = -1;
// reduction factor, i.e number of resolution levels to skip
s->reduction_factor = s->lowres;
- if (bytestream2_get_bytes_left(&s->g) < 2)
- return AVERROR(EINVAL);
+ if (bytestream2_get_bytes_left(&s->g) < 2) {
+ ret = AVERROR(EINVAL);
+ goto end;
+ }
// check if the image is in jp2 format
if (bytestream2_get_bytes_left(&s->g) >= 12 &&
if (!jp2_find_codestream(s)) {
av_log(avctx, AV_LOG_ERROR,
"couldn't find jpeg2k codestream atom\n");
- return -1;
+ ret = -1;
+ goto end;
}
} else {
bytestream2_seek(&s->g, 0, SEEK_SET);
- if (bytestream2_peek_be16(&s->g) != JPEG2000_SOC /*&& AV_RB32(s->buf + 4) == JP2_CODESTREAM*/)
- bytestream2_skip(&s->g, 8);
}
if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) {
av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n");
- return -1;
+ ret = -1;
+ goto end;
}
if (ret = jpeg2000_read_main_headers(s))
goto end;
/* get picture buffer */
- if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) {
- av_log(avctx, AV_LOG_ERROR, "ff_thread_get_buffer() failed.\n");
+ if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
goto end;
- }
picture->pict_type = AV_PICTURE_TYPE_I;
picture->key_frame = 1;
if (ret = jpeg2000_read_bitstream_packets(s))
goto end;
+
for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++)
if (ret = jpeg2000_decode_tile(s, s->tile + tileno, picture))
goto end;
+
jpeg2000_dec_cleanup(s);
*got_frame = 1;
.init_static_data = jpeg2000_init_static_data,
.decode = jpeg2000_decode_frame,
.priv_class = &class,
- .pix_fmts = (enum AVPixelFormat[]) { AV_PIX_FMT_XYZ12,
- AV_PIX_FMT_GRAY8,
- -1 },
.max_lowres = 5,
.profiles = NULL_IF_CONFIG_SMALL(profiles)
};