mirror of https://git.ffmpeg.org/ffmpeg.git
167 lines
5.9 KiB
C
167 lines
5.9 KiB
C
/*
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* DCA compatible decoder
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* Copyright (C) 2004 Gildas Bazin
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* Copyright (C) 2004 Benjamin Zores
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* Copyright (C) 2006 Benjamin Larsson
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* Copyright (C) 2007 Konstantin Shishkov
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* Copyright (C) 2016 foo86
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_DCA_H
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#define AVCODEC_DCA_H
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#include <stdint.h>
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#include "libavutil/common.h"
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#include "libavutil/internal.h"
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#include "libavutil/intreadwrite.h"
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enum DCASpeaker {
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DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R, DCA_SPEAKER_Ls,
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DCA_SPEAKER_Rs, DCA_SPEAKER_LFE1, DCA_SPEAKER_Cs, DCA_SPEAKER_Lsr,
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DCA_SPEAKER_Rsr, DCA_SPEAKER_Lss, DCA_SPEAKER_Rss, DCA_SPEAKER_Lc,
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DCA_SPEAKER_Rc, DCA_SPEAKER_Lh, DCA_SPEAKER_Ch, DCA_SPEAKER_Rh,
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DCA_SPEAKER_LFE2, DCA_SPEAKER_Lw, DCA_SPEAKER_Rw, DCA_SPEAKER_Oh,
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DCA_SPEAKER_Lhs, DCA_SPEAKER_Rhs, DCA_SPEAKER_Chr, DCA_SPEAKER_Lhr,
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DCA_SPEAKER_Rhr, DCA_SPEAKER_Cl, DCA_SPEAKER_Ll, DCA_SPEAKER_Rl,
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DCA_SPEAKER_RSV1, DCA_SPEAKER_RSV2, DCA_SPEAKER_RSV3, DCA_SPEAKER_RSV4,
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DCA_SPEAKER_COUNT
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};
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enum DCASpeakerMask {
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DCA_SPEAKER_MASK_C = 0x00000001,
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DCA_SPEAKER_MASK_L = 0x00000002,
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DCA_SPEAKER_MASK_R = 0x00000004,
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DCA_SPEAKER_MASK_Ls = 0x00000008,
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DCA_SPEAKER_MASK_Rs = 0x00000010,
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DCA_SPEAKER_MASK_LFE1 = 0x00000020,
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DCA_SPEAKER_MASK_Cs = 0x00000040,
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DCA_SPEAKER_MASK_Lsr = 0x00000080,
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DCA_SPEAKER_MASK_Rsr = 0x00000100,
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DCA_SPEAKER_MASK_Lss = 0x00000200,
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DCA_SPEAKER_MASK_Rss = 0x00000400,
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DCA_SPEAKER_MASK_Lc = 0x00000800,
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DCA_SPEAKER_MASK_Rc = 0x00001000,
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DCA_SPEAKER_MASK_Lh = 0x00002000,
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DCA_SPEAKER_MASK_Ch = 0x00004000,
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DCA_SPEAKER_MASK_Rh = 0x00008000,
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DCA_SPEAKER_MASK_LFE2 = 0x00010000,
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DCA_SPEAKER_MASK_Lw = 0x00020000,
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DCA_SPEAKER_MASK_Rw = 0x00040000,
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DCA_SPEAKER_MASK_Oh = 0x00080000,
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DCA_SPEAKER_MASK_Lhs = 0x00100000,
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DCA_SPEAKER_MASK_Rhs = 0x00200000,
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DCA_SPEAKER_MASK_Chr = 0x00400000,
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DCA_SPEAKER_MASK_Lhr = 0x00800000,
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DCA_SPEAKER_MASK_Rhr = 0x01000000,
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DCA_SPEAKER_MASK_Cl = 0x02000000,
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DCA_SPEAKER_MASK_Ll = 0x04000000,
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DCA_SPEAKER_MASK_Rl = 0x08000000,
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};
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#define DCA_SPEAKER_LAYOUT_MONO (DCA_SPEAKER_MASK_C)
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#define DCA_SPEAKER_LAYOUT_STEREO (DCA_SPEAKER_MASK_L | DCA_SPEAKER_MASK_R)
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#define DCA_SPEAKER_LAYOUT_2POINT1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_LFE1)
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#define DCA_SPEAKER_LAYOUT_3_0 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_C)
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#define DCA_SPEAKER_LAYOUT_2_1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Cs)
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#define DCA_SPEAKER_LAYOUT_3_1 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Cs)
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#define DCA_SPEAKER_LAYOUT_2_2 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs)
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#define DCA_SPEAKER_LAYOUT_5POINT0 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs)
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#define DCA_SPEAKER_LAYOUT_5POINT1 (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_LFE1)
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#define DCA_SPEAKER_LAYOUT_7POINT0_WIDE (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_Lw | DCA_SPEAKER_MASK_Rw)
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#define DCA_SPEAKER_LAYOUT_7POINT1_WIDE (DCA_SPEAKER_LAYOUT_7POINT0_WIDE | DCA_SPEAKER_MASK_LFE1)
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#define DCA_HAS_STEREO(mask) \
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((mask & DCA_SPEAKER_LAYOUT_STEREO) == DCA_SPEAKER_LAYOUT_STEREO)
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enum DCASpeakerPair {
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DCA_SPEAKER_PAIR_C = 0x0001,
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DCA_SPEAKER_PAIR_LR = 0x0002,
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DCA_SPEAKER_PAIR_LsRs = 0x0004,
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DCA_SPEAKER_PAIR_LFE1 = 0x0008,
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DCA_SPEAKER_PAIR_Cs = 0x0010,
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DCA_SPEAKER_PAIR_LhRh = 0x0020,
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DCA_SPEAKER_PAIR_LsrRsr = 0x0040,
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DCA_SPEAKER_PAIR_Ch = 0x0080,
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DCA_SPEAKER_PAIR_Oh = 0x0100,
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DCA_SPEAKER_PAIR_LcRc = 0x0200,
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DCA_SPEAKER_PAIR_LwRw = 0x0400,
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DCA_SPEAKER_PAIR_LssRss = 0x0800,
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DCA_SPEAKER_PAIR_LFE2 = 0x1000,
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DCA_SPEAKER_PAIR_LhsRhs = 0x2000,
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DCA_SPEAKER_PAIR_Chr = 0x4000,
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DCA_SPEAKER_PAIR_LhrRhr = 0x8000
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};
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/**
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* Return number of individual channels in DCASpeakerPair mask
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*/
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static inline int ff_dca_count_chs_for_mask(unsigned int mask)
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{
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return av_popcount((mask & 0xffff) | ((mask & 0xae66) << 16));
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}
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enum DCARepresentationType {
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DCA_REPR_TYPE_LtRt = 2,
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DCA_REPR_TYPE_LhRh = 3
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};
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enum DCAExtensionMask {
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DCA_CSS_CORE = 0x001,
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DCA_CSS_XXCH = 0x002,
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DCA_CSS_X96 = 0x004,
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DCA_CSS_XCH = 0x008,
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DCA_CSS_MASK = 0x00f,
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DCA_EXSS_CORE = 0x010,
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DCA_EXSS_XBR = 0x020,
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DCA_EXSS_XXCH = 0x040,
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DCA_EXSS_X96 = 0x080,
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DCA_EXSS_LBR = 0x100,
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DCA_EXSS_XLL = 0x200,
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DCA_EXSS_RSV1 = 0x400,
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DCA_EXSS_RSV2 = 0x800,
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DCA_EXSS_MASK = 0xff0,
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};
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enum DCADownMixType {
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DCA_DMIX_TYPE_1_0,
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DCA_DMIX_TYPE_LoRo,
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DCA_DMIX_TYPE_LtRt,
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DCA_DMIX_TYPE_3_0,
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DCA_DMIX_TYPE_2_1,
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DCA_DMIX_TYPE_2_2,
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DCA_DMIX_TYPE_3_1,
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DCA_DMIX_TYPE_COUNT
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};
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extern av_export const uint32_t avpriv_dca_sample_rates[16];
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extern const uint32_t ff_dca_sampling_freqs[16];
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extern const uint8_t ff_dca_freq_ranges[16];
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/**
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* Convert bitstream to one representation based on sync marker
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*/
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int avpriv_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst,
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int max_size);
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#endif /* AVCODEC_DCA_H */
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