diff options
Diffstat (limited to 'converter/other/jpeg2000/libjasper/jpc/jpc_enc.c')
| -rw-r--r-- | converter/other/jpeg2000/libjasper/jpc/jpc_enc.c | 84 |
1 files changed, 39 insertions, 45 deletions
diff --git a/converter/other/jpeg2000/libjasper/jpc/jpc_enc.c b/converter/other/jpeg2000/libjasper/jpc/jpc_enc.c index 38727135..9af25771 100644 --- a/converter/other/jpeg2000/libjasper/jpc/jpc_enc.c +++ b/converter/other/jpeg2000/libjasper/jpc/jpc_enc.c @@ -1436,8 +1436,8 @@ static void assignHighSlopePassesToLayer(jpc_enc_t * const encP, jpc_enc_tile_t * const tileP, uint_fast32_t const lyrno, - bool const haveThresh, - jpc_flt_t const thresh) { + bool const haveThresh, + jpc_flt_t const thresh) { /*---------------------------------------------------------------------------- Assign all passes with R-D slopes greater than or equal to 'thresh' to layer 'lyrno' and the rest to no layer. @@ -1549,52 +1549,46 @@ doLayer(jpc_enc_t * const encP, goodThresh = 0; /* initial value */ do { - if (allowedSize == UINT_FAST32_MAX) { - /* There's no rate constraint (This can be true of the last - layer, e.g. for lossless coding). */ - goodThresh = -1; - haveGoodThresh = true; - } else { - jpc_flt_t const thresh = (lo + hi) / 2; - - int rc; - long oldpos; - - /* Save the tier 2 coding state. */ - jpc_save_t2state(encP); - oldpos = jas_stream_tell(outP); - assert(oldpos >= 0); - - assignHighSlopePassesToLayer(encP, tileP, lyrno, true, thresh); - - performTier2CodingOneLayer(encP, tileP, lyrno, outP, errorP); - - if (!*errorP) { - pos = jas_stream_tell(outP); - - /* Check the rate constraint. */ - assert(pos >= 0); - if (pos > allowedSize) { - /* The rate is too high. */ - lo = thresh; - } else if (pos <= allowedSize) { - /* The rate is low enough, so try higher. */ - hi = thresh; - if (!haveGoodThresh || thresh < goodThresh) { - goodThresh = thresh; - haveGoodThresh = true; - } + jpc_flt_t const thresh = (lo + hi) / 2; + + int rc; + long oldpos; + + /* Save the tier 2 coding state. */ + jpc_save_t2state(encP); + oldpos = jas_stream_tell(outP); + assert(oldpos >= 0); + + assignHighSlopePassesToLayer(encP, tileP, lyrno, true, thresh); + + performTier2CodingOneLayer(encP, tileP, lyrno, outP, errorP); + + if (!*errorP) { + pos = jas_stream_tell(outP); + + /* Check the rate constraint. */ + assert(pos >= 0); + if (pos > allowedSize) { + /* The rate is too high. */ + lo = thresh; + } else if (pos <= allowedSize) { + /* The rate is low enough, so try higher. */ + hi = thresh; + if (!haveGoodThresh || thresh < goodThresh) { + goodThresh = thresh; + haveGoodThresh = true; } } - /* Restore the tier 2 coding state. */ - jpc_restore_t2state(encP); - rc = jas_stream_seek(outP, oldpos, SEEK_SET); - if (rc < 0) - abort(); - - trace("iter %u: allowedlen=%08ld actuallen=%08ld thresh=%f", - numiters, allowedSize, pos, thresh); } + /* Restore the tier 2 coding state. */ + jpc_restore_t2state(encP); + rc = jas_stream_seek(outP, oldpos, SEEK_SET); + if (rc < 0) + abort(); + + trace("iter %u: allowedlen=%08ld actuallen=%08ld thresh=%f", + numiters, allowedSize, pos, thresh); + ++numiters; } while (lo < hi - 1e-3 && numiters < 32 && !*errorP); } |