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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-07-03 16:36:05 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-07-03 16:36:05 +0200 |
| commit | 5eb23e6b0ae28168cce9fadb103e3af97f9ee5ca (patch) | |
| tree | b8b6f4cb78a37fb373c3fc5b2b402297298e9a3e /libavcodec/jpeg2000dec.c | |
| parent | 19ff6f55e800d848920af4a10e9516e51bfdcb0f (diff) | |
| parent | 22e18ea39e371030cc78973d1b46aae45a7ea215 (diff) | |
| download | ffmpeg-5eb23e6b0ae28168cce9fadb103e3af97f9ee5ca.tar.gz | |
Merge commit '22e18ea39e371030cc78973d1b46aae45a7ea215'
* commit '22e18ea39e371030cc78973d1b46aae45a7ea215':
jpeg2000: Optimize output sample conversion
jpeg2000: Reset s->numX/Ytiles on tile deallocation
jpeg2000: Optimize dequantization
jpeg2000: Do not assume a single tile
jpeg2000: Speed up jpeg2000_decode_tile()
jpeg2000: Use EBCOT's CAUSAL and BYPASS mode in decode_cblk()
Conflicts:
libavcodec/jpeg2000dec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/jpeg2000dec.c')
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 0371773e47..4018dc904d 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -942,9 +942,10 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, int width, int height, int bandpos) { - 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; + 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)); @@ -964,7 +965,8 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, switch(pass_t) { case 0: decode_sigpass(t1, width, height, bpno + 1, bandpos, - bpass_csty_symbol && (clnpass_cnt >= 4), vert_causal_ctx_csty_symbol); + bpass_csty_symbol && (clnpass_cnt >= 4), + vert_causal_ctx_csty_symbol); break; case 1: decode_refpass(t1, width, height, bpno + 1); @@ -973,7 +975,8 @@ static int decode_cblk(Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, break; case 2: decode_clnpass(s, t1, width, height, bpno + 1, bandpos, - codsty->cblk_style & JPEG2000_CBLK_SEGSYM, vert_causal_ctx_csty_symbol); + 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); @@ -1116,7 +1119,8 @@ static int jpeg2000_decode_tile(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, bandpos = bandno + (reslevelno > 0); - if (band->coord[0][0] == band->coord[0][1] || band->coord[1][0] == band->coord[1][1]) + 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; |