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@ -252,42 +252,64 @@ typedef struct { |
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MDCTContext imdct; |
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} DCAContext; |
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static const uint16_t dca_vlc_offs[] = { |
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0, 512, 640, 768, 1282, 1794, 2436, 3080, 3770, 4454, 5364, |
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5372, 5380, 5388, 5392, 5396, 5412, 5420, 5428, 5460, 5492, 5508, |
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5572, 5604, 5668, 5796, 5860, 5892, 6412, 6668, 6796, 7308, 7564, |
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7820, 8076, 8620, 9132, 9388, 9910, 10166, 10680, 11196, 11726, 12240, |
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12752, 13298, 13810, 14326, 14840, 15500, 16022, 16540, 17158, 17678, 18264, |
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18796, 19352, 19926, 20468, 21472, 22398, 23014, 23622, |
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}; |
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static av_cold void dca_init_vlcs(void) |
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{ |
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static int vlcs_initialized = 0; |
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int i, j; |
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int i, j, c = 14; |
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static VLC_TYPE dca_table[23622][2]; |
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if (vlcs_initialized) |
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return; |
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dca_bitalloc_index.offset = 1; |
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dca_bitalloc_index.wrap = 2; |
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for (i = 0; i < 5; i++) |
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for (i = 0; i < 5; i++) { |
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dca_bitalloc_index.vlc[i].table = &dca_table[dca_vlc_offs[i]]; |
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dca_bitalloc_index.vlc[i].table_allocated = dca_vlc_offs[i + 1] - dca_vlc_offs[i]; |
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init_vlc(&dca_bitalloc_index.vlc[i], bitalloc_12_vlc_bits[i], 12, |
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bitalloc_12_bits[i], 1, 1, |
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bitalloc_12_codes[i], 2, 2, INIT_VLC_USE_STATIC); |
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bitalloc_12_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); |
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} |
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dca_scalefactor.offset = -64; |
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dca_scalefactor.wrap = 2; |
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for (i = 0; i < 5; i++) |
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for (i = 0; i < 5; i++) { |
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dca_scalefactor.vlc[i].table = &dca_table[dca_vlc_offs[i + 5]]; |
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dca_scalefactor.vlc[i].table_allocated = dca_vlc_offs[i + 6] - dca_vlc_offs[i + 5]; |
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init_vlc(&dca_scalefactor.vlc[i], SCALES_VLC_BITS, 129, |
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scales_bits[i], 1, 1, |
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scales_codes[i], 2, 2, INIT_VLC_USE_STATIC); |
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scales_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); |
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} |
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dca_tmode.offset = 0; |
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dca_tmode.wrap = 1; |
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for (i = 0; i < 4; i++) |
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for (i = 0; i < 4; i++) { |
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dca_tmode.vlc[i].table = &dca_table[dca_vlc_offs[i + 10]]; |
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dca_tmode.vlc[i].table_allocated = dca_vlc_offs[i + 11] - dca_vlc_offs[i + 10]; |
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init_vlc(&dca_tmode.vlc[i], tmode_vlc_bits[i], 4, |
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tmode_bits[i], 1, 1, |
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tmode_codes[i], 2, 2, INIT_VLC_USE_STATIC); |
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tmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); |
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} |
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for(i = 0; i < 10; i++) |
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for(j = 0; j < 7; j++){ |
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if(!bitalloc_codes[i][j]) break; |
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dca_smpl_bitalloc[i+1].offset = bitalloc_offsets[i]; |
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dca_smpl_bitalloc[i+1].wrap = 1 + (j > 4); |
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dca_smpl_bitalloc[i+1].vlc[j].table = &dca_table[dca_vlc_offs[c]]; |
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dca_smpl_bitalloc[i+1].vlc[j].table_allocated = dca_vlc_offs[c + 1] - dca_vlc_offs[c]; |
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init_vlc(&dca_smpl_bitalloc[i+1].vlc[j], bitalloc_maxbits[i][j], |
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bitalloc_sizes[i], |
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bitalloc_bits[i][j], 1, 1, |
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bitalloc_codes[i][j], 2, 2, INIT_VLC_USE_STATIC); |
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bitalloc_codes[i][j], 2, 2, INIT_VLC_USE_NEW_STATIC); |
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c++; |
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} |
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vlcs_initialized = 1; |
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} |
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