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@ -41,9 +41,8 @@ |
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#define HAD_QCC 0x02 |
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typedef struct Jpeg2000TilePart { |
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uint16_t tp_idx; // Tile-part index
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uint8_t tile_index; // Tile index who refers the tile-part
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uint32_t tp_len; // Length of tile-part
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const uint8_t *tp_end; |
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GetByteContext tpg; // bit stream in tile-part
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} Jpeg2000TilePart; |
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@ -55,6 +54,7 @@ typedef struct Jpeg2000Tile { |
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Jpeg2000CodingStyle codsty[4]; |
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Jpeg2000QuantStyle qntsty[4]; |
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Jpeg2000TilePart tile_part[3]; |
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uint16_t tp_idx; // Tile-part index
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} Jpeg2000Tile; |
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typedef struct Jpeg2000DecoderContext { |
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@ -122,6 +122,9 @@ static int tag_tree_decode(Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node, |
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Jpeg2000TgtNode *stack[30]; |
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int sp = -1, curval = 0; |
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if (!node) |
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return AVERROR(EINVAL); |
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while (node && !node->vis) { |
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stack[++sp] = node; |
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node = node->parent; |
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@ -185,9 +188,12 @@ static int get_siz(Jpeg2000DecoderContext *s) |
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uint8_t x = bytestream2_get_byteu(&s->g); |
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s->cbps[i] = (x & 0x7f) + 1; |
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s->precision = FFMAX(s->cbps[i], s->precision); |
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s->sgnd[i] = !!(x & 0x80); |
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s->sgnd[i] = !!(x & 0x80); |
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s->cdx[i] = bytestream2_get_byteu(&s->g); |
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s->cdy[i] = bytestream2_get_byteu(&s->g); |
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if (s->cdx[i] != 1 || s->cdy[i] != 1) { |
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av_log(s->avctx, AV_LOG_ERROR, "unsupported/ CDxy values\n"); |
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} |
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} |
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s->numXtiles = ff_jpeg2000_ceildiv(s->width - s->tile_offset_x, s->tile_width); |
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@ -277,8 +283,7 @@ static int get_cox(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c) |
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c->cblk_style = bytestream2_get_byteu(&s->g); |
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if (c->cblk_style != 0) { // cblk style
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av_log(s->avctx, AV_LOG_ERROR, "no extra cblk styles supported\n"); |
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return -1; |
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av_log(s->avctx, AV_LOG_WARNING, "extra cblk styles %X\n", c->cblk_style); |
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} |
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c->transform = bytestream2_get_byteu(&s->g); // DWT transformation type
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/* set integer 9/7 DWT in case of BITEXACT flag */ |
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@ -433,11 +438,6 @@ static int get_sot(Jpeg2000DecoderContext *s, int n) |
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s->curtileno=0; |
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return AVERROR(EINVAL); |
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} |
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if (Isot) { |
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av_log(s->avctx, AV_LOG_ERROR, |
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"Not a DCINEMA JP2K file: more than one tile\n"); |
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return -1; |
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} |
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Psot = bytestream2_get_be32u(&s->g); // Psot
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TPsot = bytestream2_get_byteu(&s->g); // TPsot
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@ -449,24 +449,18 @@ static int get_sot(Jpeg2000DecoderContext *s, int n) |
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return AVERROR_PATCHWELCOME; |
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} |
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s->tile[s->curtileno].tp_idx = TPsot; |
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tp = s->tile[s->curtileno].tile_part + TPsot; |
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tp->tile_index = Isot; |
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tp->tp_len = Psot; |
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tp->tp_idx = TPsot; |
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/* Start of bit stream. Pointer to SOD marker
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* Check SOD marker is present. */ |
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if (JPEG2000_SOD == bytestream2_get_be16(&s->g)) { |
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bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_len - n - 4); |
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bytestream2_skip(&s->g, tp->tp_len - n - 4); |
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} else { |
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av_log(s->avctx, AV_LOG_ERROR, "SOD marker not found \n"); |
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return -1; |
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} |
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tp->tp_end = s->g.buffer + Psot - n - 2; |
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if (!TPsot) { |
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Jpeg2000Tile *tile = s->tile + s->curtileno; |
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/* End address of bit stream =
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* start address + (Psot - size of SOT HEADER(n) |
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* - size of SOT MARKER(2) - size of SOD marker(2) */ |
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/* copy defaults */ |
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memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(Jpeg2000CodingStyle)); |
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memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(Jpeg2000QuantStyle)); |
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} |
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return 0; |
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} |
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@ -523,12 +517,6 @@ static int init_tile(Jpeg2000DecoderContext *s, int tileno) |
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if (!tile->comp) |
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return AVERROR(ENOMEM); |
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/* copy codsty, qnsty to tile. TODO: Is it the best way?
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* codsty, qnsty is an array of 4 structs Jpeg2000CodingStyle |
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* and Jpeg2000QuantStyle */ |
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memcpy(tile->codsty, s->codsty, s->ncomponents * sizeof(*tile->codsty)); |
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memcpy(tile->qntsty, s->qntsty, s->ncomponents * sizeof(*tile->qntsty)); |
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for (compno = 0; compno < s->ncomponents; compno++) { |
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Jpeg2000Component *comp = tile->comp + compno; |
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Jpeg2000CodingStyle *codsty = tile->codsty + compno; |
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@ -674,6 +662,7 @@ static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile |
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s->bit_index = 8; |
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switch (tile->codsty[0].prog_order) { |
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case JPEG2000_PGOD_LRCP: |
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case JPEG2000_PGOD_RLCP: |
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for (layno = 0; layno < tile->codsty[0].nlayers; layno++) { |
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ok_reslevel = 1; |
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for (reslevelno = 0; ok_reslevel; reslevelno++) { |
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@ -683,7 +672,7 @@ static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile |
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Jpeg2000QuantStyle *qntsty = tile->qntsty + compno; |
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if (reslevelno < codsty->nreslevels) { |
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Jpeg2000ResLevel *rlevel = tile->comp[compno].reslevel + |
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reslevelno; |
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reslevelno; |
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ok_reslevel = 1; |
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for (precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) |
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if (jpeg2000_decode_packet(s, |
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@ -758,32 +747,33 @@ static int jpeg2000_decode_packets(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile |
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/* TIER-1 routines */ |
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static void decode_sigpass(Jpeg2000T1Context *t1, int width, int height, |
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int bpno, int bandno) |
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int bpno, int bandno, int bpass_csty_symbol, |
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int vert_causal_ctx_csty_symbol) |
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{ |
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int mask = 3 << (bpno - 1), y0, x, y; |
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for (y0 = 0; y0 < height; y0 += 4) |
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for (x = 0; x < width; x++) |
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for (y = y0; y < height && y < y0 + 4; y++) |
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if ((t1->flags[y + 1][x + 1] & JPEG2000_T1_SIG_NB) |
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&& !(t1->flags[y + 1][x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { |
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if (ff_mqc_decode(&t1->mqc, |
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t1->mqc.cx_states + |
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ff_jpeg2000_getsigctxno(t1->flags[y + 1][x + 1], |
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bandno))) { |
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int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y + 1][x + 1], |
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&xorbit); |
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t1->data[y][x] = |
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(ff_mqc_decode(&t1->mqc, |
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t1->mqc.cx_states + ctxno) ^ xorbit) |
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? -mask : mask; |
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for (y = y0; y < height && y < y0 + 4; y++) { |
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if ((t1->flags[y+1][x+1] & JPEG2000_T1_SIG_NB) |
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&& !(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { |
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int flags_mask = -1; |
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if (vert_causal_ctx_csty_symbol && y == y0 + 3) |
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flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE); |
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if (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, bandno))) { |
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int xorbit, ctxno = ff_jpeg2000_getsgnctxno(t1->flags[y+1][x+1], &xorbit); |
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if (bpass_csty_symbol) |
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t1->data[y][x] = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ? -mask : mask; |
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else |
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t1->data[y][x] = (ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ctxno) ^ xorbit) ? |
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-mask : mask; |
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ff_jpeg2000_set_significance(t1, x, y, |
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t1->data[y][x] < 0); |
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} |
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t1->flags[y + 1][x + 1] |= JPEG2000_T1_VIS; |
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} |
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} |
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} |
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static void decode_refpass(Jpeg2000T1Context *t1, int width, int height, |
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@ -810,11 +800,11 @@ static void decode_refpass(Jpeg2000T1Context *t1, int width, int height, |
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static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, |
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int width, int height, int bpno, int bandno, |
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int seg_symbols) |
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int seg_symbols, int vert_causal_ctx_csty_symbol) |
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{ |
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int mask = 3 << (bpno - 1), y0, x, y, runlen, dec; |
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for (y0 = 0; y0 < height; y0 += 4) |
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for (y0 = 0; y0 < height; y0 += 4) { |
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for (x = 0; x < width; x++) { |
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if (y0 + 3 < height && |
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!((t1->flags[y0 + 1][x + 1] & (JPEG2000_T1_SIG_NB | JPEG2000_T1_VIS | JPEG2000_T1_SIG)) || |
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@ -836,11 +826,13 @@ static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, |
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for (y = y0 + runlen; y < y0 + 4 && y < height; y++) { |
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if (!dec) { |
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if (!(t1->flags[y + 1][x + 1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) |
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dec = ff_mqc_decode(&t1->mqc, |
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t1->mqc.cx_states + |
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ff_jpeg2000_getsigctxno(t1->flags[y + 1][x + 1], |
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bandno)); |
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if (!(t1->flags[y+1][x+1] & (JPEG2000_T1_SIG | JPEG2000_T1_VIS))) { |
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int flags_mask = -1; |
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if (vert_causal_ctx_csty_symbol && y == y0 + 3) |
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flags_mask &= ~(JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_SW | JPEG2000_T1_SIG_SE); |
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dec = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + ff_jpeg2000_getsigctxno(t1->flags[y+1][x+1] & flags_mask, |
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bandno)); |
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} |
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} |
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if (dec) { |
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int xorbit; |
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@ -856,6 +848,7 @@ static void decode_clnpass(Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, |
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t1->flags[y + 1][x + 1] &= ~JPEG2000_T1_VIS; |
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} |
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} |
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} |
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if (seg_symbols) { |
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int val; |
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val = ff_mqc_decode(&t1->mqc, t1->mqc.cx_states + MQC_CX_UNI); |
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@ -872,7 +865,9 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, |
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Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, |
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int width, int height, int bandpos) |
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{ |
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int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y; |
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int passno = cblk->npasses, pass_t = 2, bpno = cblk->nonzerobits - 1, y, clnpass_cnt = 0; |
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int bpass_csty_symbol = JPEG2000_CBLK_BYPASS & codsty->cblk_style; |
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int vert_causal_ctx_csty_symbol = JPEG2000_CBLK_VSC & codsty->cblk_style; |
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for (y = 0; y < height; y++) |
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memset(t1->data[y], 0, width * sizeof(**t1->data)); |
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@ -880,24 +875,31 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, |
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/* If code-block contains no compressed data: nothing to do. */ |
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if (!cblk->length) |
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return 0; |
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for (y = 0; y < height + 2; y++) |
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memset(t1->flags[y], 0, (width + 2) * sizeof(**t1->flags)); |
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cblk->data[cblk->length] = 0xff; |
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cblk->data[cblk->length + 1] = 0xff; |
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for (y = 0; y < height+2; y++) |
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memset(t1->flags[y], 0, (width + 2)*sizeof(**t1->flags)); |
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cblk->data[cblk->length] = 0xff; |
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cblk->data[cblk->length+1] = 0xff; |
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ff_mqc_initdec(&t1->mqc, cblk->data); |
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while (passno--) { |
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switch (pass_t) { |
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switch(pass_t) { |
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case 0: |
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decode_sigpass(t1, width, height, bpno + 1, bandpos); |
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decode_sigpass(t1, width, height, bpno + 1, bandpos, |
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bpass_csty_symbol && (clnpass_cnt >= 4), vert_causal_ctx_csty_symbol); |
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break; |
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case 1: |
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decode_refpass(t1, width, height, bpno + 1); |
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if (bpass_csty_symbol && clnpass_cnt >= 4) |
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ff_mqc_initdec(&t1->mqc, cblk->data); |
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break; |
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case 2: |
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decode_clnpass(s, t1, width, height, bpno + 1, bandpos, |
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codsty->cblk_style & JPEG2000_CBLK_SEGSYM); |
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codsty->cblk_style & JPEG2000_CBLK_SEGSYM, vert_causal_ctx_csty_symbol); |
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clnpass_cnt = clnpass_cnt + 1; |
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if (bpass_csty_symbol && clnpass_cnt >= 4) |
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ff_mqc_initdec(&t1->mqc, cblk->data); |
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break; |
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} |
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@ -1033,8 +1035,12 @@ static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, |
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int nb_precincts, precno; |
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Jpeg2000Band *band = rlevel->band + bandno; |
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int cblkno = 0, bandpos; |
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bandpos = bandno + (reslevelno > 0); |
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if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1]) |
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continue; |
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nb_precincts = rlevel->num_precincts_x * rlevel->num_precincts_y; |
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/* Loop on precincts */ |
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for (precno = 0; precno < nb_precincts; precno++) { |
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@ -1114,8 +1120,8 @@ static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, |
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x = tile->comp[compno].coord[0][0] - s->image_offset_x; |
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dst = linel + (x * s->ncomponents + compno); |
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for (; x < s->avctx->width; x += s->cdx[compno]) { |
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int val; |
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for (; x < tile->comp[compno].coord[0][1] - s->image_offset_x; x += s-> cdx[compno]) { |
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int val; |
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/* DC level shift and clip see ISO 15444-1:2002 G.1.2 */ |
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if (tile->codsty->transform == FF_DWT97) |
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val = lrintf(*datap) + (1 << (s->cbps[compno] - 1)); |
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@ -1169,6 +1175,15 @@ static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) |
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marker = bytestream2_get_be16u(&s->g); |
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oldpos = bytestream2_tell(&s->g); |
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if (marker == JPEG2000_SOD) { |
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Jpeg2000Tile *tile = s->tile + s->curtileno; |
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Jpeg2000TilePart *tp = tile->tile_part + tile->tp_idx; |
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bytestream2_init(&tp->tpg, s->g.buffer, tp->tp_end - s->g.buffer); |
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bytestream2_skip(&s->g, tp->tp_end - s->g.buffer); |
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continue; |
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} |
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if (marker == JPEG2000_EOC) |
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break; |
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@ -1194,7 +1209,11 @@ static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) |
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ret = get_qcd(s, len, qntsty, properties); |
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break; |
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case JPEG2000_SOT: |
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ret = get_sot(s, len); |
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if (!(ret = get_sot(s, len))) { |
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codsty = s->tile[s->curtileno].codsty; |
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qntsty = s->tile[s->curtileno].qntsty; |
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properties = s->tile[s->curtileno].properties; |
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} |
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break; |
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case JPEG2000_COM: |
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// the comment is ignored
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@ -1211,7 +1230,7 @@ static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) |
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bytestream2_skip(&s->g, len - 2); |
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break; |
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} |
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if (((bytestream2_tell(&s->g) - oldpos != len) && (marker != JPEG2000_SOT)) || ret) { |
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if (bytestream2_tell(&s->g) - oldpos != len || ret) { |
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av_log(s->avctx, AV_LOG_ERROR, |
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"error during processing marker segment %.4x\n", marker); |
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return ret ? ret : -1; |
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@ -1224,12 +1243,18 @@ static int jpeg2000_read_main_headers(Jpeg2000DecoderContext *s) |
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static int jpeg2000_read_bitstream_packets(Jpeg2000DecoderContext *s) |
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{ |
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int ret = 0; |
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Jpeg2000Tile *tile = s->tile + s->curtileno; |
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int tileno; |
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if (ret = init_tile(s, s->curtileno)) |
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return ret; |
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if (ret = jpeg2000_decode_packets(s, tile)) |
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return ret; |
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for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) { |
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Jpeg2000Tile *tile = s->tile + tileno; |
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if (ret = init_tile(s, tileno)) |
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return ret; |
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s->g = tile->tile_part[0].tpg; |
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if (ret = jpeg2000_decode_packets(s, tile)) |
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return ret; |
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} |
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return 0; |
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} |
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@ -1267,13 +1292,15 @@ static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data, |
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s->avctx = avctx; |
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bytestream2_init(&s->g, avpkt->data, avpkt->size); |
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s->curtileno = 0; // TODO: only one tile in DCI JP2K. to implement for more tiles
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s->curtileno = -1; |
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// reduction factor, i.e number of resolution levels to skip
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s->reduction_factor = s->lowres; |
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if (bytestream2_get_bytes_left(&s->g) < 2) |
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return AVERROR(EINVAL); |
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if (bytestream2_get_bytes_left(&s->g) < 2) { |
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ret = AVERROR(EINVAL); |
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goto end; |
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} |
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// check if the image is in jp2 format
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if (bytestream2_get_bytes_left(&s->g) >= 12 && |
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@ -1283,17 +1310,17 @@ static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data, |
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if (!jp2_find_codestream(s)) { |
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av_log(avctx, AV_LOG_ERROR, |
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"couldn't find jpeg2k codestream atom\n"); |
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return -1; |
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ret = -1; |
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goto end; |
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} |
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} else { |
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bytestream2_seek(&s->g, 0, SEEK_SET); |
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if (bytestream2_peek_be16(&s->g) != JPEG2000_SOC /*&& AV_RB32(s->buf + 4) == JP2_CODESTREAM*/) |
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bytestream2_skip(&s->g, 8); |
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} |
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if (bytestream2_get_be16u(&s->g) != JPEG2000_SOC) { |
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av_log(avctx, AV_LOG_ERROR, "SOC marker not present\n"); |
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return -1; |
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ret = -1; |
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goto end; |
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} |
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|
if (ret = jpeg2000_read_main_headers(s)) |
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goto end; |
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@ -1308,9 +1335,11 @@ static int jpeg2000_decode_frame(AVCodecContext *avctx, void *data, |
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if (ret = jpeg2000_read_bitstream_packets(s)) |
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goto end; |
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for (tileno = 0; tileno < s->numXtiles * s->numYtiles; tileno++) |
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if (ret = jpeg2000_decode_tile(s, s->tile + tileno, picture)) |
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goto end; |
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|
|
jpeg2000_dec_cleanup(s); |
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|
|
*got_frame = 1; |
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@ -1361,9 +1390,6 @@ AVCodec ff_jpeg2000_decoder = { |
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|
.init_static_data = jpeg2000_init_static_data, |
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|
|
.decode = jpeg2000_decode_frame, |
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|
|
.priv_class = &class, |
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|
.pix_fmts = (enum AVPixelFormat[]) { AV_PIX_FMT_XYZ12, |
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|
|
AV_PIX_FMT_GRAY8, |
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-1 }, |
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|
.max_lowres = 5, |
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|
|
.profiles = NULL_IF_CONFIG_SMALL(profiles) |
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|
|
}; |
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|