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| author | Robert Swain <robert.swain@gmail.com> | 2008-08-11 11:16:06 +0000 |
|---|---|---|
| committer | Robert Swain <robert.swain@gmail.com> | 2008-08-11 11:16:06 +0000 |
| commit | 9cc04edff9fff54416bc9fe0f55dd65ed5deed60 (patch) | |
| tree | 239e4c23e39f93d0707f4ecf73cb072f6ebb5d95 /libavcodec/aactab.c | |
| parent | 3f66d16821a4a6140b4ed5b977f14008ba5f826e (diff) | |
| download | ffmpeg-streaming-9cc04edff9fff54416bc9fe0f55dd65ed5deed60.zip ffmpeg-streaming-9cc04edff9fff54416bc9fe0f55dd65ed5deed60.tar.gz | |
More OKed hunks of the AAC decoder from SoC
Originally committed as revision 14694 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/aactab.c')
| -rw-r--r-- | libavcodec/aactab.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/libavcodec/aactab.c b/libavcodec/aactab.c index a404567..ac1d59f 100644 --- a/libavcodec/aactab.c +++ b/libavcodec/aactab.c @@ -32,6 +32,14 @@ #include <stdint.h> +const uint8_t ff_aac_num_swb_1024[] = { + 41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40 +}; + +const uint8_t ff_aac_num_swb_128[] = { + 12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15 +}; + const uint32_t ff_aac_scalefactor_code[121] = { 0x3ffe8, 0x3ffe6, 0x3ffe7, 0x3ffe5, 0x7fff5, 0x7fff1, 0x7ffed, 0x7fff6, 0x7ffee, 0x7ffef, 0x7fff0, 0x7fffc, 0x7fffd, 0x7ffff, 0x7fffe, 0x7fff7, @@ -796,6 +804,13 @@ const float ff_aac_ivquant_tab[IVQUANT_SIZE] = { 4064.0312908, 4074.6805676, 4085.3368071, 4096.0000000, }; +/** + * Table of pow(2, (i - 200)/4.) used for different purposes depending on the + * range of indices to the table: + * [ 0, 255] scale factor decoding when using C dsp.float_to_int16 + * [60, 315] scale factor decoding when using SIMD dsp.float_to_int16 + * [45, 300] intensity stereo position decoding mapped in reverse order i.e. 0->300, 1->299, ..., 254->46, 255->45 + */ const float ff_aac_pow2sf_tab[316] = { 8.88178420e-16, 1.05622810e-15, 1.25607397e-15, 1.49373210e-15, 1.77635684e-15, 2.11245619e-15, 2.51214793e-15, 2.98746420e-15, |
