diff options
| -rw-r--r-- | libavcodec/aac.h | 8 | ||||
| -rw-r--r-- | libavcodec/aacdectab.h | 15 |
2 files changed, 23 insertions, 0 deletions
diff --git a/libavcodec/aac.h b/libavcodec/aac.h index 91b18a13f6..a64497db03 100644 --- a/libavcodec/aac.h +++ b/libavcodec/aac.h @@ -232,6 +232,14 @@ typedef struct { /** @} */ /** + * @defgroup temporary aligned temporary buffers (We do not want to have these on the stack.) + * @{ + */ + DECLARE_ALIGNED_16(float, buf_mdct[2048]); + DECLARE_ALIGNED_16(float, revers[1024]); + /** @} */ + + /** * @defgroup tables Computed / set up during initialization. * @{ */ diff --git a/libavcodec/aacdectab.h b/libavcodec/aacdectab.h index b7a9787a30..c10eb71bd0 100644 --- a/libavcodec/aacdectab.h +++ b/libavcodec/aacdectab.h @@ -156,4 +156,19 @@ static const uint16_t *swb_offset_128[] = { // @} +/* @name tns_max_bands + * The maximum number of scalefactor bands on which TNS can operate for the long + * and short transforms respectively. The index to these tables is related to + * the sample rate of the audio. + * @{ + */ +static const uint8_t tns_max_bands_1024[] = { + 31, 31, 34, 40, 42, 51, 46, 46, 42, 42, 42, 39 +}; + +static const uint8_t tns_max_bands_128[] = { + 9, 9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14 +}; +// @} + #endif /* FFMPEG_AACDECTAB_H */ |