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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-05-30 14:40:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-05-30 14:57:58 +0200 |
| commit | 62d00aa22f28532edc192bd9bf92e815ff78304e (patch) | |
| tree | f09d4de8f715642c7fe2d7f27830bd89618fa1af /libavcodec/jpeg2000.c | |
| parent | c2ac389bba2481d18b59055c0a929e57b241c055 (diff) | |
| download | ffmpeg-62d00aa22f28532edc192bd9bf92e815ff78304e.tar.gz | |
jpeg2000/j2k: merge j2k/jpeg2000.c/h
Now only j2kdec / jpeg2000dec.c remain
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/jpeg2000.c')
| -rw-r--r-- | libavcodec/jpeg2000.c | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c index 9339523e88..d41ec74dac 100644 --- a/libavcodec/jpeg2000.c +++ b/libavcodec/jpeg2000.c @@ -79,6 +79,16 @@ static Jpeg2000TgtNode *ff_jpeg2000_tag_tree_init(int w, int h) return res; } +static void tag_tree_zero(Jpeg2000TgtNode *t, int w, int h) +{ + int i, siz = tag_tree_size(w, h); + + for (i = 0; i < siz; i++) { + t[i].val = 0; + t[i].vis = 0; + } +} + uint8_t ff_jpeg2000_sigctxno_lut[256][4]; static int getsigctxno(int flag, int bandno) @@ -316,9 +326,8 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp, for (i = 0; i < 2; i++) for (j = 0; j < 2; j++) band->coord[i][j] = - ff_jpeg2000_ceildivpow2(comp->coord_o[i][j], + ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0], declvl - 1); - log2_band_prec_width = reslevel->log2_prec_width; log2_band_prec_height = reslevel->log2_prec_height; /* see ISO/IEC 15444-1:2002 eq. B-17 and eq. B-15 */ @@ -333,7 +342,7 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp, for (j = 0; j < 2; j++) /* Formula example for tbx_0 = ceildiv((tcx_0 - 2 ^ (declvl - 1) * x0_b) / declvl) */ band->coord[i][j] = - ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - + ff_jpeg2000_ceildivpow2(comp->coord_o[i][j] - comp->coord_o[i][0] - (((bandno + 1 >> i) & 1) << declvl - 1), declvl); /* TODO: Manage case of 3 band offsets here or @@ -349,6 +358,11 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp, log2_band_prec_height = reslevel->log2_prec_height - 1; } + for (j = 0; j < 2; j++) + band->coord[0][j] = ff_jpeg2000_ceildiv(band->coord[0][j], dx); + for (j = 0; j < 2; j++) + band->coord[1][j] = ff_jpeg2000_ceildiv(band->coord[1][j], dy); + band->prec = av_malloc_array(reslevel->num_precincts_x * reslevel->num_precincts_y, sizeof(*band->prec)); @@ -454,6 +468,27 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp, return 0; } +void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) +{ + int reslevelno, bandno, cblkno, precno; + for (reslevelno = 0; reslevelno < codsty->nreslevels; reslevelno++) { + Jpeg2000ResLevel *rlevel = comp->reslevel + reslevelno; + for (bandno = 0; bandno < rlevel->nbands; bandno++) { + Jpeg2000Band *band = rlevel->band + bandno; + for(precno = 0; precno < rlevel->num_precincts_x * rlevel->num_precincts_y; precno++) { + Jpeg2000Prec *prec = band->prec + precno; + tag_tree_zero(prec->zerobits, prec->nb_codeblocks_width, prec->nb_codeblocks_height); + tag_tree_zero(prec->cblkincl, prec->nb_codeblocks_width, prec->nb_codeblocks_height); + for (cblkno = 0; cblkno < prec->nb_codeblocks_width * prec->nb_codeblocks_height; cblkno++) { + Jpeg2000Cblk *cblk = prec->cblk + cblkno; + cblk->length = 0; + cblk->lblock = 3; + } + } + } + } +} + void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty) { int reslevelno, bandno, precno; |