#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;
Jpeg2000CodingStyle codsty[4];
Jpeg2000QuantStyle qntsty[4];
Jpeg2000TilePart tile_part[3];
+ uint16_t tp_idx; // Tile-part index
} Jpeg2000Tile;
typedef struct Jpeg2000DecoderContext {
Jpeg2000TgtNode *stack[30];
int sp = -1, curval = 0;
+ if (!node)
+ return AVERROR_INVALIDDATA;
+
while (node && !node->vis) {
stack[++sp] = node;
node = node->parent;
return AVERROR_PATCHWELCOME;
}
- tp = s->tile[s->curtileno].tile_part + TPsot;
+ s->tile[Isot].tp_idx = TPsot;
+ tp = s->tile[Isot].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 AVERROR_INVALIDDATA;
- }
+ tp->tp_end = s->g.buffer + Psot - n - 2;
- /* End address of bit stream =
- * start address + (Psot - size of SOT HEADER(n)
- * - size of SOT MARKER(2) - size of SOD marker(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));
+ }
return 0;
}
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(*tile->codsty));
- memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(*tile->qntsty));
-
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
Jpeg2000CodingStyle *codsty = tile->codsty + compno;
}
cblk->length += cblk->lengthinc;
cblk->lengthinc = 0;
+
+ if (cblk->length > sizeof(cblk->data)) {
+ av_log(s->avctx, AV_LOG_ERROR,
+ "Block length %d > data size %zd\n",
+ cblk->length, sizeof(cblk->data));
+ return AVERROR_INVALIDDATA;
+ }
}
}
return 0;
static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
{
- int layno, reslevelno, compno, precno, ok_reslevel, ret;
- uint8_t prog_order = tile->codsty[0].prog_order;
- uint16_t x;
- uint16_t y;
+ int ret = 0;
+ int layno, reslevelno, compno, precno, ok_reslevel;
+ int x, y;
s->bit_index = 8;
- switch (prog_order) {
+ switch (tile->codsty[0].prog_order) {
case JPEG2000_PGOD_LRCP:
for (layno = 0; layno < tile->codsty[0].nlayers; layno++) {
ok_reslevel = 1;
}
break;
+ case JPEG2000_PGOD_RLCP:
+ avpriv_request_sample(s->avctx, "Progression order RLCP");
+ ret = AVERROR_PATCHWELCOME;
+ break;
+
+ case JPEG2000_PGOD_RPCL:
+ avpriv_request_sample(s->avctx, "Progression order RPCL");
+ ret = AVERROR_PATCHWELCOME;
+ break;
+
+ case JPEG2000_PGOD_PCRL:
+ avpriv_request_sample(s->avctx, "Progression order PCRL");
+ ret = AVERROR_PATCHWELCOME;
+ break;
+
default:
break;
}
/* EOC marker reached */
bytestream2_skip(&s->g, 2);
- return 0;
+ return ret;
}
/* 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);
int width, int height, int bandpos)
{
int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y;
+ int clnpass_cnt = 0;
+ int bpass_csty_symbol = codsty->cblk_style & JPEG2000_CBLK_BYPASS;
+ int vert_causal_ctx_csty_symbol = codsty->cblk_style & JPEG2000_CBLK_VSC;
for (y = 0; y < height; y++)
memset(t1->data[y], 0, width * sizeof(**t1->data));
while (passno--) {
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->f_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 = &comp->i_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.
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++) {
if (s->precision <= 8) {
for (compno = 0; compno < s->ncomponents; compno++) {
Jpeg2000Component *comp = tile->comp + compno;
+ 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;
+ 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);
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)
av_log(s->avctx, AV_LOG_ERROR, "Missing SOT\n");
return AVERROR_INVALIDDATA;
}
+ if (!s->tile) {
+ av_log(s->avctx, AV_LOG_ERROR, "Missing SIZ\n");
+ return AVERROR_INVALIDDATA;
+ }
tile = s->tile + s->curtileno;
tp = tile->tile_part + tile->tp_idx;
ret = get_qcd(s, len, qntsty, properties);
break;
case JPEG2000_SOT:
- ret = get_sot(s, len);
+ if (!(ret = get_sot(s, len))) {
+ 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;
}
static void jpeg2000_init_static_data(AVCodec *codec)
{
ff_jpeg2000_init_tier1_luts();
+ ff_mqc_init_context_tables();
}
#define OFFSET(x) offsetof(Jpeg2000DecoderContext, x)
projects / ffmpeg / blobdiff