diff options
Diffstat (limited to 'libavcodec/eac3dec.c')
| -rw-r--r-- | libavcodec/eac3dec.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/libavcodec/eac3dec.c b/libavcodec/eac3dec.c index fe52d27123..47e5aa6587 100644 --- a/libavcodec/eac3dec.c +++ b/libavcodec/eac3dec.c @@ -3,20 +3,20 @@ * Copyright (c) 2007 Bartlomiej Wolowiec <bartek.wolowiec@gmail.com> * Copyright (c) 2008 Justin Ruggles * - * 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 */ @@ -63,7 +63,7 @@ typedef enum { #define EAC3_SR_CODE_REDUCED 3 -void ff_eac3_apply_spectral_extension(AC3DecodeContext *s) +static void ff_eac3_apply_spectral_extension(AC3DecodeContext *s) { int bin, bnd, ch, i; uint8_t wrapflag[SPX_MAX_BANDS]={1,0,}, num_copy_sections, copy_sizes[SPX_MAX_BANDS]; @@ -101,7 +101,7 @@ void ff_eac3_apply_spectral_extension(AC3DecodeContext *s) for (i = 0; i < num_copy_sections; i++) { memcpy(&s->transform_coeffs[ch][bin], &s->transform_coeffs[ch][s->spx_dst_start_freq], - copy_sizes[i]*sizeof(float)); + copy_sizes[i]*sizeof(INTFLOAT)); bin += copy_sizes[i]; } @@ -124,7 +124,7 @@ void ff_eac3_apply_spectral_extension(AC3DecodeContext *s) bin = s->spx_src_start_freq - 2; for (bnd = 0; bnd < s->num_spx_bands; bnd++) { if (wrapflag[bnd]) { - float *coeffs = &s->transform_coeffs[ch][bin]; + INTFLOAT *coeffs = &s->transform_coeffs[ch][bin]; coeffs[0] *= atten_tab[0]; coeffs[1] *= atten_tab[1]; coeffs[2] *= atten_tab[2]; @@ -142,6 +142,11 @@ void ff_eac3_apply_spectral_extension(AC3DecodeContext *s) for (bnd = 0; bnd < s->num_spx_bands; bnd++) { float nscale = s->spx_noise_blend[ch][bnd] * rms_energy[bnd] * (1.0f / INT32_MIN); float sscale = s->spx_signal_blend[ch][bnd]; +#if USE_FIXED + // spx_noise_blend and spx_signal_blend are both FP.23 + nscale *= 1.0 / (1<<23); + sscale *= 1.0 / (1<<23); +#endif for (i = 0; i < s->spx_band_sizes[bnd]; i++) { float noise = nscale * (int32_t)av_lfg_get(&s->dith_state); s->transform_coeffs[ch][bin] *= sscale; @@ -195,7 +200,7 @@ static void idct6(int pre_mant[6]) pre_mant[5] = even0 - odd0; } -void ff_eac3_decode_transform_coeffs_aht_ch(AC3DecodeContext *s, int ch) +static void ff_eac3_decode_transform_coeffs_aht_ch(AC3DecodeContext *s, int ch) { int bin, blk, gs; int end_bap, gaq_mode; @@ -288,7 +293,7 @@ void ff_eac3_decode_transform_coeffs_aht_ch(AC3DecodeContext *s, int ch) } } -int ff_eac3_parse_header(AC3DecodeContext *s) +static int ff_eac3_parse_header(AC3DecodeContext *s) { int i, blk, ch; int ac3_exponent_strategy, parse_aht_info, parse_spx_atten_data; |