diff options
Diffstat (limited to 'libavcodec/aacsbr.h')
| -rw-r--r-- | libavcodec/aacsbr.h | 67 |
1 files changed, 57 insertions, 10 deletions
diff --git a/libavcodec/aacsbr.h b/libavcodec/aacsbr.h index 9bc5e29..ed1a7f9 100644 --- a/libavcodec/aacsbr.h +++ b/libavcodec/aacsbr.h @@ -3,20 +3,20 @@ * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl ) * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -33,17 +33,64 @@ #include "aac.h" #include "sbr.h" +#define ENVELOPE_ADJUSTMENT_OFFSET 2 +#define NOISE_FLOOR_OFFSET FIXR(6.0f) + +/** + * SBR VLC tables + */ +enum { + T_HUFFMAN_ENV_1_5DB, + F_HUFFMAN_ENV_1_5DB, + T_HUFFMAN_ENV_BAL_1_5DB, + F_HUFFMAN_ENV_BAL_1_5DB, + T_HUFFMAN_ENV_3_0DB, + F_HUFFMAN_ENV_3_0DB, + T_HUFFMAN_ENV_BAL_3_0DB, + F_HUFFMAN_ENV_BAL_3_0DB, + T_HUFFMAN_NOISE_3_0DB, + T_HUFFMAN_NOISE_BAL_3_0DB, +}; + +/** + * bs_frame_class - frame class of current SBR frame (14496-3 sp04 p98) + */ +enum { + FIXFIX, + FIXVAR, + VARFIX, + VARVAR, +}; + +enum { + EXTENSION_ID_PS = 2, +}; + +static const int8_t vlc_sbr_lav[10] = + { 60, 60, 24, 24, 31, 31, 12, 12, 31, 12 }; + +#define SBR_INIT_VLC_STATIC(num, size) \ + INIT_VLC_STATIC(&vlc_sbr[num], 9, sbr_tmp[num].table_size / sbr_tmp[num].elem_size, \ + sbr_tmp[num].sbr_bits , 1, 1, \ + sbr_tmp[num].sbr_codes, sbr_tmp[num].elem_size, sbr_tmp[num].elem_size, \ + size) + +#define SBR_VLC_ROW(name) \ + { name ## _codes, name ## _bits, sizeof(name ## _codes), sizeof(name ## _codes[0]) } + /** Initialize SBR. */ -void ff_aac_sbr_init(void); +void AAC_RENAME(ff_aac_sbr_init)(void); /** Initialize one SBR context. */ -void ff_aac_sbr_ctx_init(AACContext *ac, SpectralBandReplication *sbr); +void AAC_RENAME(ff_aac_sbr_ctx_init)(AACContext *ac, SpectralBandReplication *sbr); /** Close one SBR context. */ -void ff_aac_sbr_ctx_close(SpectralBandReplication *sbr); +void AAC_RENAME(ff_aac_sbr_ctx_close)(SpectralBandReplication *sbr); /** Decode one SBR element. */ -int ff_decode_sbr_extension(AACContext *ac, SpectralBandReplication *sbr, +int AAC_RENAME(ff_decode_sbr_extension)(AACContext *ac, SpectralBandReplication *sbr, GetBitContext *gb, int crc, int cnt, int id_aac); /** Apply one SBR element to one AAC element. */ -void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac, - float* L, float *R); +void AAC_RENAME(ff_sbr_apply)(AACContext *ac, SpectralBandReplication *sbr, int id_aac, + INTFLOAT* L, INTFLOAT *R); + +void ff_aacsbr_func_ptr_init_mips(AACSBRContext *c); #endif /* AVCODEC_AACSBR_H */ |
