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Some bit-allocation tuning

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This commit is contained in:
Jean-Marc Valin 2008-09-19 16:49:26 -04:00
parent b4ce40cb55
commit c24b518fb0
2 changed files with 4 additions and 3 deletions
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6
libcelt/modes.c
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@ -113,8 +113,8 @@ static const int band_allocation[BARK_BANDS*BITALLOC_SIZE] =
3, 2, 2, 2, 3, 3, 2, 3, 2, 3, 4, 4, 6, 7, 9, 9, 9, 7, 6, 5, 5, 5, 0, 0, 0,
3, 3, 2, 2, 3, 3, 3, 3, 3, 4, 4, 5, 7, 9, 10, 10, 10, 9, 6, 5, 5, 5, 5, 1, 0,
4, 3, 3, 3, 3, 3, 3, 3, 4, 4, 6, 7, 7, 9, 11, 10, 10, 9, 9, 8, 11, 10, 10, 1, 1,
5, 5, 4, 4, 5, 5, 5, 5, 6, 6, 8, 8, 10, 12, 15, 15, 13, 12, 12, 12, 18, 18, 16, 10, 1,
6, 6, 6, 6, 6, 6, 7, 7, 9, 9, 11, 12, 13, 18, 22, 23, 24, 25, 28, 30, 35, 35, 35, 35, 15,
5, 5, 5, 4, 5, 5, 5, 6, 6, 6, 8, 8, 10, 12, 12, 12, 10, 16, 12, 15, 15, 20, 18, 10, 1,
8, 7, 7, 7, 7, 7, 8, 8, 9, 10, 11, 12, 14, 17, 18, 23, 20, 25, 28, 40, 37, 38, 40, 35, 1,
7, 7, 7, 7, 7, 7, 10, 10, 10, 13, 14, 18, 20, 24, 28, 32, 32, 35, 38, 38, 42, 50, 59, 54, 31,
8, 8, 8, 8, 8, 9, 10, 12, 14, 20, 22, 25, 28, 30, 35, 42, 46, 50, 55, 60, 62, 62, 62, 62, 62,
12, 12, 12, 12, 12, 13, 15, 18, 22, 30, 32, 35, 40, 45, 55, 62, 66, 70, 85, 90, 92, 92, 92, 92, 92,
@ -242,7 +242,7 @@ static void compute_allocation_table(CELTMode *mode, int res)
int min_bits=0;
if (allocVectors[i*mode->nbEBands+j] > 0)
min_bits = 1;
ebits = min_bits + allocVectors[i*mode->nbEBands+j] / (C*(mode->eBands[j+1]-mode->eBands[j]));
ebits = IMAX(min_bits , allocVectors[i*mode->nbEBands+j] / (C*(mode->eBands[j+1]-mode->eBands[j])));
if (ebits>7)
ebits=7;
/* The bits used for fine allocation can't be used for pulses */