diff options
Diffstat (limited to 'libavcodec/ac3dec.h')
-rw-r--r-- | libavcodec/ac3dec.h | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/libavcodec/ac3dec.h b/libavcodec/ac3dec.h index aed87432f5..aa346cb020 100644 --- a/libavcodec/ac3dec.h +++ b/libavcodec/ac3dec.h @@ -2,20 +2,20 @@ * Common code between the AC-3 and E-AC-3 decoders * Copyright (c) 2007 Bartlomiej Wolowiec <bartek.wolowiec@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 */ @@ -62,10 +62,13 @@ #define SPX_MAX_BANDS 17 +/** Large enough for maximum possible frame size when the specification limit is ignored */ +#define AC3_FRAME_BUFFER_SIZE 32768 + typedef struct { + AVClass *class; ///< class for AVOptions AVCodecContext *avctx; ///< parent context GetBitContext gbc; ///< bitstream reader - uint8_t *input_buffer; ///< temp buffer to prevent overread ///@name Bit stream information ///@{ @@ -85,6 +88,12 @@ typedef struct { int eac3; ///< indicates if current frame is E-AC-3 ///@} + int preferred_stereo_downmix; + float ltrt_center_mix_level; + float ltrt_surround_mix_level; + float loro_center_mix_level; + float loro_surround_mix_level; + ///@name Frame syntax parameters int snr_offset_strategy; ///< SNR offset strategy (snroffststr) int block_switch_syntax; ///< block switch syntax enabled (blkswe) @@ -141,6 +150,7 @@ typedef struct { ///@name Dynamic range float dynamic_range[2]; ///< dynamic range + float drc_scale; ///< percentage of dynamic range compression to be applied ///@} ///@name Bandwidth @@ -200,6 +210,7 @@ typedef struct { DECLARE_ALIGNED(32, float, window)[AC3_BLOCK_SIZE]; ///< window coefficients DECLARE_ALIGNED(32, float, tmp_output)[AC3_BLOCK_SIZE]; ///< temporary storage for output before windowing DECLARE_ALIGNED(32, float, output)[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE]; ///< output after imdct transform and windowing + DECLARE_ALIGNED(32, uint8_t, input_buffer)[AC3_FRAME_BUFFER_SIZE + FF_INPUT_BUFFER_PADDING_SIZE]; ///< temp buffer to prevent overread ///@} } AC3DecodeContext; |