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| author | Gautam Ramakrishnan <gautamramk@gmail.com> | 2020-06-29 23:29:06 +0530 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-30 20:35:23 +0200 |
| commit | 579ac96a0422be18a10277aa6e8dd26207dc4d40 (patch) | |
| tree | 14fbe56818d4982d2afc7ea9710a58f8c2bb0bf1 | |
| parent | 9aef4ae97599c61845ed76d37e81e5a8c4b266ff (diff) | |
| download | ffmpeg-579ac96a0422be18a10277aa6e8dd26207dc4d40.tar.gz | |
libavcodec/jpeg2000.c: Precinct size check removed
This patch removes a check which throws an error if
the log2 precinct width/height is 0. The standard allows
the first component to have 0 as the log2 width/height.
However, to ensure proper intialization of coding style,
an extra check has been added.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/jpeg2000.c | 3 | ||||
| -rw-r--r-- | libavcodec/jpeg2000.h | 1 | ||||
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 6 |
3 files changed, 5 insertions, 5 deletions
diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c index 73206d17f3..1aca31ffa4 100644 --- a/libavcodec/jpeg2000.c +++ b/libavcodec/jpeg2000.c @@ -509,9 +509,6 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp, // update precincts size: 2^n value reslevel->log2_prec_width = codsty->log2_prec_widths[reslevelno]; reslevel->log2_prec_height = codsty->log2_prec_heights[reslevelno]; - if (!reslevel->log2_prec_width || !reslevel->log2_prec_height) { - return AVERROR_INVALIDDATA; - } /* Number of bands for each resolution level */ if (reslevelno == 0) diff --git a/libavcodec/jpeg2000.h b/libavcodec/jpeg2000.h index 0f82716981..27df43786d 100644 --- a/libavcodec/jpeg2000.h +++ b/libavcodec/jpeg2000.h @@ -144,6 +144,7 @@ typedef struct Jpeg2000CodingStyle { uint8_t prog_order; // progression order uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]; // precincts size according resolution levels uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]; // TODO: initialize prec_size array with 0? + uint8_t init; } Jpeg2000CodingStyle; typedef struct Jpeg2000QuantStyle { diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 546a646668..3f4a9ef96c 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -567,7 +567,7 @@ static int get_cod(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, 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)); @@ -605,6 +605,7 @@ static int get_coc(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, return ret; properties[compno] |= HAD_COC; + c->init = 1; return 0; } @@ -991,7 +992,8 @@ static int init_tile(Jpeg2000DecoderContext *s, int tileno) 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)) |