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avcodec/ac3: Move non-(de|en)coder-only parts out of ac3.h 

Move AC3HeaderInfo into ac3_parser_internal.h and the rest
into a new header ac3defs.h.

This also breaks an include cycle of ac3.h and ac3tab.h
(the latter now only needs ac3defs.h).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-05-12 13:44:21 +02:00
parent cbd75ecc18
commit 104abea646
18 changed files with 159 additions and 124 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
libavcodec/ac3.c
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@ -28,6 +28,7 @@
#include "libavutil/macros.h"
#include "ac3.h"
#include "ac3defs.h"
/**
* Starting frequency coefficient bin for each critical band.

115
libavcodec/ac3.h
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@ -30,28 +30,8 @@
#include <math.h>
#include <stdint.h>
#define EAC3_MAX_CHANNELS 16 /**< maximum number of channels in EAC3 */
#define AC3_MAX_CHANNELS 7 /**< maximum number of channels, including coupling channel */
#define CPL_CH 0 /**< coupling channel index */
#define AC3_MAX_COEFS 256
#define AC3_BLOCK_SIZE 256
#define AC3_MAX_BLOCKS 6
#define AC3_FRAME_SIZE (AC3_MAX_BLOCKS * 256)
#define AC3_WINDOW_SIZE (AC3_BLOCK_SIZE * 2)
#define AC3_CRITICAL_BANDS 50
#define AC3_MAX_CPL_BANDS 18
#include "ac3tab.h"
/* exponent encoding strategy */
#define EXP_REUSE 0
#define EXP_NEW 1
#define EXP_D15 1
#define EXP_D25 2
#define EXP_D45 3
#ifndef USE_FIXED
#define USE_FIXED 0
#endif
@ -112,58 +92,6 @@ typedef float SHORTFLOAT;
#define LEVEL_ZERO 0.0000000000000000
#define LEVEL_ONE 1.0000000000000000
/** Delta bit allocation strategy */
typedef enum {
DBA_REUSE = 0,
DBA_NEW,
DBA_NONE,
DBA_RESERVED
} AC3DeltaStrategy;
/** Channel mode (audio coding mode) */
typedef enum {
AC3_CHMODE_DUALMONO = 0,
AC3_CHMODE_MONO,
AC3_CHMODE_STEREO,
AC3_CHMODE_3F,
AC3_CHMODE_2F1R,
AC3_CHMODE_3F1R,
AC3_CHMODE_2F2R,
AC3_CHMODE_3F2R
} AC3ChannelMode;
/** Dolby Surround mode */
typedef enum AC3DolbySurroundMode {
AC3_DSURMOD_NOTINDICATED = 0,
AC3_DSURMOD_OFF,
AC3_DSURMOD_ON,
AC3_DSURMOD_RESERVED
} AC3DolbySurroundMode;
/** Dolby Surround EX mode */
typedef enum AC3DolbySurroundEXMode {
AC3_DSUREXMOD_NOTINDICATED = 0,
AC3_DSUREXMOD_OFF,
AC3_DSUREXMOD_ON,
AC3_DSUREXMOD_PLIIZ
} AC3DolbySurroundEXMode;
/** Dolby Headphone mode */
typedef enum AC3DolbyHeadphoneMode {
AC3_DHEADPHONMOD_NOTINDICATED = 0,
AC3_DHEADPHONMOD_OFF,
AC3_DHEADPHONMOD_ON,
AC3_DHEADPHONMOD_RESERVED
} AC3DolbyHeadphoneMode;
/** Preferred Stereo Downmix mode */
typedef enum AC3PreferredStereoDownmixMode {
AC3_DMIXMOD_NOTINDICATED = 0,
AC3_DMIXMOD_LTRT,
AC3_DMIXMOD_LORO,
AC3_DMIXMOD_DPLII // reserved value in A/52, but used by encoders to indicate DPL2
} AC3PreferredStereoDownmixMode;
typedef struct AC3BitAllocParameters {
int sr_code;
int sr_shift;
@ -171,49 +99,6 @@ typedef struct AC3BitAllocParameters {
int cpl_fast_leak, cpl_slow_leak;
} AC3BitAllocParameters;
/**
* @struct AC3HeaderInfo
* Coded AC-3 header values up to the lfeon element, plus derived values.
*/
typedef struct AC3HeaderInfo {
/** @name Coded elements
* @{
*/
uint16_t sync_word;
uint16_t crc1;
uint8_t sr_code;
uint8_t bitstream_id;
uint8_t bitstream_mode;
uint8_t channel_mode;
uint8_t lfe_on;
uint8_t frame_type;
int substreamid; ///< substream identification
int center_mix_level; ///< Center mix level index
int surround_mix_level; ///< Surround mix level index
uint16_t channel_map;
int num_blocks; ///< number of audio blocks
int dolby_surround_mode;
/** @} */
/** @name Derived values
* @{
*/
uint8_t sr_shift;
uint16_t sample_rate;
uint32_t bit_rate;
uint8_t channels;
uint16_t frame_size;
uint64_t channel_layout;
/** @} */
} AC3HeaderInfo;
typedef enum {
EAC3_FRAME_TYPE_INDEPENDENT = 0,
EAC3_FRAME_TYPE_DEPENDENT,
EAC3_FRAME_TYPE_AC3_CONVERT,
EAC3_FRAME_TYPE_RESERVED
} EAC3FrameType;
/**
* Calculate the log power-spectral density of the input signal.
* This gives a rough estimate of signal power in the frequency domain by using

2
libavcodec/ac3_parser.c
View File

@ -25,6 +25,8 @@
#include "libavutil/channel_layout.h"
#include "parser.h"
#include "ac3defs.h"
#include "ac3tab.h"
#include "ac3_parser.h"
#include "ac3_parser_internal.h"
#include "aac_ac3_parser.h"

41
libavcodec/ac3_parser_internal.h
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@ -21,9 +21,48 @@
#ifndef AVCODEC_AC3_PARSER_INTERNAL_H
#define AVCODEC_AC3_PARSER_INTERNAL_H
#include "ac3.h"
#include <stddef.h>
#include <stdint.h>
#include "ac3defs.h"
#include "get_bits.h"
/**
* @struct AC3HeaderInfo
* Coded AC-3 header values up to the lfeon element, plus derived values.
*/
typedef struct AC3HeaderInfo {
/** @name Coded elements
* @{
*/
uint16_t sync_word;
uint16_t crc1;
uint8_t sr_code;
uint8_t bitstream_id;
uint8_t bitstream_mode;
uint8_t channel_mode;
uint8_t lfe_on;
uint8_t frame_type;
int substreamid; ///< substream identification
int center_mix_level; ///< Center mix level index
int surround_mix_level; ///< Surround mix level index
uint16_t channel_map;
int num_blocks; ///< number of audio blocks
int dolby_surround_mode;
/** @} */
/** @name Derived values
* @{
*/
uint8_t sr_shift;
uint16_t sample_rate;
uint32_t bit_rate;
uint8_t channels;
uint16_t frame_size;
uint64_t channel_layout;
/** @} */
} AC3HeaderInfo;
/**
* Parse AC-3 frame header.
* Parse the header up to the lfeon element, which is the first 52 or 54 bits

1
libavcodec/ac3dec.c
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@ -43,6 +43,7 @@
#include "ac3_parser_internal.h"
#include "ac3dec.h"
#include "ac3dec_data.h"
#include "ac3defs.h"
#include "kbdwin.h"
/**

1
libavcodec/ac3dec_data.c
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@ -25,7 +25,6 @@
*/
#include "ac3dec_data.h"
#include "ac3.h"
/**
* Table used to ungroup 3 values stored in 5 bits.

104
libavcodec/ac3defs.h Normal file
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@ -0,0 +1,104 @@
/*
* Common AC-3 definitions
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* 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.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_AC3DEFS_H
#define AVCODEC_AC3DEFS_H
#define EAC3_MAX_CHANNELS 16 /**< maximum number of channels in EAC3 */
#define AC3_MAX_CHANNELS 7 /**< maximum number of channels, including coupling channel */
#define CPL_CH 0 /**< coupling channel index */
#define AC3_MAX_COEFS 256
#define AC3_BLOCK_SIZE 256
#define AC3_MAX_BLOCKS 6
#define AC3_FRAME_SIZE (AC3_MAX_BLOCKS * 256)
#define AC3_WINDOW_SIZE (AC3_BLOCK_SIZE * 2)
#define AC3_CRITICAL_BANDS 50
#define AC3_MAX_CPL_BANDS 18
/* exponent encoding strategy */
#define EXP_REUSE 0
#define EXP_NEW 1
#define EXP_D15 1
#define EXP_D25 2
#define EXP_D45 3
/** Delta bit allocation strategy */
typedef enum {
DBA_REUSE = 0,
DBA_NEW,
DBA_NONE,
DBA_RESERVED
} AC3DeltaStrategy;
/** Channel mode (audio coding mode) */
typedef enum {
AC3_CHMODE_DUALMONO = 0,
AC3_CHMODE_MONO,
AC3_CHMODE_STEREO,
AC3_CHMODE_3F,
AC3_CHMODE_2F1R,
AC3_CHMODE_3F1R,
AC3_CHMODE_2F2R,
AC3_CHMODE_3F2R
} AC3ChannelMode;
/** Dolby Surround mode */
typedef enum AC3DolbySurroundMode {
AC3_DSURMOD_NOTINDICATED = 0,
AC3_DSURMOD_OFF,
AC3_DSURMOD_ON,
AC3_DSURMOD_RESERVED
} AC3DolbySurroundMode;
/** Dolby Surround EX mode */
typedef enum AC3DolbySurroundEXMode {
AC3_DSUREXMOD_NOTINDICATED = 0,
AC3_DSUREXMOD_OFF,
AC3_DSUREXMOD_ON,
AC3_DSUREXMOD_PLIIZ
} AC3DolbySurroundEXMode;
/** Dolby Headphone mode */
typedef enum AC3DolbyHeadphoneMode {
AC3_DHEADPHONMOD_NOTINDICATED = 0,
AC3_DHEADPHONMOD_OFF,
AC3_DHEADPHONMOD_ON,
AC3_DHEADPHONMOD_RESERVED
} AC3DolbyHeadphoneMode;
/** Preferred Stereo Downmix mode */
typedef enum AC3PreferredStereoDownmixMode {
AC3_DMIXMOD_NOTINDICATED = 0,
AC3_DMIXMOD_LTRT,
AC3_DMIXMOD_LORO,
AC3_DMIXMOD_DPLII // reserved value in A/52, but used by encoders to indicate DPL2
} AC3PreferredStereoDownmixMode;
typedef enum {
EAC3_FRAME_TYPE_INDEPENDENT = 0,
EAC3_FRAME_TYPE_DEPENDENT,
EAC3_FRAME_TYPE_AC3_CONVERT,
EAC3_FRAME_TYPE_RESERVED
} EAC3FrameType;
#endif /* AVCODEC_AC3DEFS_H */

3
libavcodec/ac3dsp.c
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@ -29,8 +29,9 @@
#include "libavutil/intmath.h"
#include "libavutil/mem_internal.h"
#include "ac3.h"
#include "ac3defs.h"
#include "ac3dsp.h"
#include "ac3tab.h"
#include "mathops.h"
static void ac3_exponent_min_c(uint8_t *exp, int num_reuse_blocks, int nb_coefs)

2
libavcodec/ac3enc.c
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@ -47,6 +47,8 @@
#include "audiodsp.h"
#include "ac3dsp.h"
#include "ac3.h"
#include "ac3defs.h"
#include "ac3tab.h"
#include "fft.h"
#include "ac3enc.h"
#include "eac3enc.h"

1
libavcodec/ac3enc.h
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@ -32,6 +32,7 @@
#include "libavutil/opt.h"
#include "ac3.h"
#include "ac3defs.h"
#include "ac3dsp.h"
#include "avcodec.h"
#include "codec_internal.h"

1
libavcodec/ac3tab.c
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@ -26,7 +26,6 @@
#include "libavutil/channel_layout.h"
#include "ac3.h"
#include "ac3tab.h"
/**

2
libavcodec/ac3tab.h
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@ -24,7 +24,7 @@
#include <stdint.h>
#include "ac3.h"
#include "ac3defs.h"
extern const uint16_t ff_ac3_frame_size_tab[38][3];
extern const uint8_t ff_ac3_channels_tab[8];

2
libavcodec/eac3_data.c
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@ -27,7 +27,7 @@
#include <stddef.h>
#include "eac3_data.h"
#include "ac3.h"
#include "ac3defs.h"
const uint8_t ff_eac3_bits_vs_hebap[20] = {
0, 2, 3, 4, 5, 7, 8, 9, 3, 4,

1
libavcodec/mips/ac3dsp_mips.c
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@ -56,6 +56,7 @@
#include "config.h"
#include "libavcodec/ac3dsp.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3tab.h"
#include "libavutil/mips/asmdefs.h"
#if HAVE_INLINE_ASM

1
libavcodec/x86/ac3dsp_init.c
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@ -22,7 +22,6 @@
#include "libavutil/attributes.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3dsp.h"
void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs);

1
libavformat/hls_sample_encryption.c
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@ -33,6 +33,7 @@
#include "libavcodec/adts_header.h"
#include "libavcodec/adts_parser.h"
#include "libavcodec/ac3tab.h"
#include "libavcodec/ac3_parser_internal.h"

2
libavformat/spdifdec.c
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@ -27,7 +27,7 @@
#include "libavutil/bswap.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3defs.h"
#include "libavcodec/adts_parser.h"
#include "avformat.h"

2
libavformat/spdifenc.c
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@ -49,7 +49,7 @@
#include "avformat.h"
#include "avio_internal.h"
#include "spdif.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3defs.h"
#include "libavcodec/adts_parser.h"
#include "libavcodec/dca.h"
#include "libavcodec/dca_syncwords.h"