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Diffstat (limited to 'ffmpeg1/libavcodec/ac3enc.h')
| -rw-r--r-- | ffmpeg1/libavcodec/ac3enc.h | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/ffmpeg1/libavcodec/ac3enc.h b/ffmpeg1/libavcodec/ac3enc.h deleted file mode 100644 index be9dcf2..0000000 --- a/ffmpeg1/libavcodec/ac3enc.h +++ /dev/null @@ -1,308 +0,0 @@ -/* - * AC-3 encoder & E-AC-3 encoder common header - * Copyright (c) 2000 Fabrice Bellard - * Copyright (c) 2006-2010 Justin Ruggles <justin.ruggles@gmail.com> - * - * This file is part of Libav. - * - * Libav 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, - * 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 - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * AC-3 encoder & E-AC-3 encoder common header - */ - -#ifndef AVCODEC_AC3ENC_H -#define AVCODEC_AC3ENC_H - -#include <stdint.h> - -#include "libavutil/float_dsp.h" -#include "ac3.h" -#include "ac3dsp.h" -#include "avcodec.h" -#include "dsputil.h" -#include "put_bits.h" -#include "fft.h" - -#ifndef CONFIG_AC3ENC_FLOAT -#define CONFIG_AC3ENC_FLOAT 0 -#endif - -#define OFFSET(param) offsetof(AC3EncodeContext, options.param) -#define AC3ENC_PARAM (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM) - -#define AC3ENC_TYPE_AC3_FIXED 0 -#define AC3ENC_TYPE_AC3 1 -#define AC3ENC_TYPE_EAC3 2 - -#if CONFIG_AC3ENC_FLOAT -#define AC3_NAME(x) ff_ac3_float_ ## x -#define MAC_COEF(d,a,b) ((d)+=(a)*(b)) -#define COEF_MIN (-16777215.0/16777216.0) -#define COEF_MAX ( 16777215.0/16777216.0) -#define NEW_CPL_COORD_THRESHOLD 0.03 -typedef float SampleType; -typedef float CoefType; -typedef float CoefSumType; -#else -#define AC3_NAME(x) ff_ac3_fixed_ ## x -#define MAC_COEF(d,a,b) MAC64(d,a,b) -#define COEF_MIN -16777215 -#define COEF_MAX 16777215 -#define NEW_CPL_COORD_THRESHOLD 503317 -typedef int16_t SampleType; -typedef int32_t CoefType; -typedef int64_t CoefSumType; -#endif - -/* common option values */ -#define AC3ENC_OPT_NONE -1 -#define AC3ENC_OPT_AUTO -1 -#define AC3ENC_OPT_OFF 0 -#define AC3ENC_OPT_ON 1 -#define AC3ENC_OPT_NOT_INDICATED 0 -#define AC3ENC_OPT_MODE_ON 2 -#define AC3ENC_OPT_MODE_OFF 1 - -/* specific option values */ -#define AC3ENC_OPT_LARGE_ROOM 1 -#define AC3ENC_OPT_SMALL_ROOM 2 -#define AC3ENC_OPT_DOWNMIX_LTRT 1 -#define AC3ENC_OPT_DOWNMIX_LORO 2 -#define AC3ENC_OPT_ADCONV_STANDARD 0 -#define AC3ENC_OPT_ADCONV_HDCD 1 - - -/** - * Encoding Options used by AVOption. - */ -typedef struct AC3EncOptions { - /* AC-3 metadata options*/ - int dialogue_level; - int bitstream_mode; - float center_mix_level; - float surround_mix_level; - int dolby_surround_mode; - int audio_production_info; - int mixing_level; - int room_type; - int copyright; - int original; - int extended_bsi_1; - int preferred_stereo_downmix; - float ltrt_center_mix_level; - float ltrt_surround_mix_level; - float loro_center_mix_level; - float loro_surround_mix_level; - int extended_bsi_2; - int dolby_surround_ex_mode; - int dolby_headphone_mode; - int ad_converter_type; - int eac3_mixing_metadata; - int eac3_info_metadata; - - /* other encoding options */ - int allow_per_frame_metadata; - int stereo_rematrixing; - int channel_coupling; - int cpl_start; -} AC3EncOptions; - -/** - * Data for a single audio block. - */ -typedef struct AC3Block { - CoefType **mdct_coef; ///< MDCT coefficients - int32_t **fixed_coef; ///< fixed-point MDCT coefficients - uint8_t **exp; ///< original exponents - uint8_t **grouped_exp; ///< grouped exponents - int16_t **psd; ///< psd per frequency bin - int16_t **band_psd; ///< psd per critical band - int16_t **mask; ///< masking curve - uint16_t **qmant; ///< quantized mantissas - uint8_t **cpl_coord_exp; ///< coupling coord exponents (cplcoexp) - uint8_t **cpl_coord_mant; ///< coupling coord mantissas (cplcomant) - uint8_t coeff_shift[AC3_MAX_CHANNELS]; ///< fixed-point coefficient shift values - uint8_t new_rematrixing_strategy; ///< send new rematrixing flags in this block - int num_rematrixing_bands; ///< number of rematrixing bands - uint8_t rematrixing_flags[4]; ///< rematrixing flags - int new_cpl_strategy; ///< send new coupling strategy - int cpl_in_use; ///< coupling in use for this block (cplinu) - uint8_t channel_in_cpl[AC3_MAX_CHANNELS]; ///< channel in coupling (chincpl) - int num_cpl_channels; ///< number of channels in coupling - uint8_t new_cpl_coords[AC3_MAX_CHANNELS]; ///< send new coupling coordinates (cplcoe) - uint8_t cpl_master_exp[AC3_MAX_CHANNELS]; ///< coupling coord master exponents (mstrcplco) - int new_snr_offsets; ///< send new SNR offsets - int new_cpl_leak; ///< send new coupling leak info - int end_freq[AC3_MAX_CHANNELS]; ///< end frequency bin (endmant) -} AC3Block; - -/** - * AC-3 encoder private context. - */ -typedef struct AC3EncodeContext { - AVClass *av_class; ///< AVClass used for AVOption - AC3EncOptions options; ///< encoding options - AVCodecContext *avctx; ///< parent AVCodecContext - PutBitContext pb; ///< bitstream writer context - DSPContext dsp; - AVFloatDSPContext fdsp; - AC3DSPContext ac3dsp; ///< AC-3 optimized functions - FFTContext mdct; ///< FFT context for MDCT calculation - const SampleType *mdct_window; ///< MDCT window function array - - AC3Block blocks[AC3_MAX_BLOCKS]; ///< per-block info - - int fixed_point; ///< indicates if fixed-point encoder is being used - int eac3; ///< indicates if this is E-AC-3 vs. AC-3 - int bitstream_id; ///< bitstream id (bsid) - int bitstream_mode; ///< bitstream mode (bsmod) - - int bit_rate; ///< target bit rate, in bits-per-second - int sample_rate; ///< sampling frequency, in Hz - - int num_blks_code; ///< number of blocks code (numblkscod) - int num_blocks; ///< number of blocks per frame - int frame_size_min; ///< minimum frame size in case rounding is necessary - int frame_size; ///< current frame size in bytes - int frame_size_code; ///< frame size code (frmsizecod) - uint16_t crc_inv[2]; - int64_t bits_written; ///< bit count (used to avg. bitrate) - int64_t samples_written; ///< sample count (used to avg. bitrate) - - int fbw_channels; ///< number of full-bandwidth channels (nfchans) - int channels; ///< total number of channels (nchans) - int lfe_on; ///< indicates if there is an LFE channel (lfeon) - int lfe_channel; ///< channel index of the LFE channel - int has_center; ///< indicates if there is a center channel - int has_surround; ///< indicates if there are one or more surround channels - int channel_mode; ///< channel mode (acmod) - const uint8_t *channel_map; ///< channel map used to reorder channels - - int center_mix_level; ///< center mix level code - int surround_mix_level; ///< surround mix level code - int ltrt_center_mix_level; ///< Lt/Rt center mix level code - int ltrt_surround_mix_level; ///< Lt/Rt surround mix level code - int loro_center_mix_level; ///< Lo/Ro center mix level code - int loro_surround_mix_level; ///< Lo/Ro surround mix level code - - int cutoff; ///< user-specified cutoff frequency, in Hz - int bandwidth_code; ///< bandwidth code (0 to 60) (chbwcod) - int start_freq[AC3_MAX_CHANNELS]; ///< start frequency bin (strtmant) - int cpl_end_freq; ///< coupling channel end frequency bin - - int cpl_on; ///< coupling turned on for this frame - int cpl_enabled; ///< coupling enabled for all frames - int num_cpl_subbands; ///< number of coupling subbands (ncplsubnd) - int num_cpl_bands; ///< number of coupling bands (ncplbnd) - uint8_t cpl_band_sizes[AC3_MAX_CPL_BANDS]; ///< number of coeffs in each coupling band - - int rematrixing_enabled; ///< stereo rematrixing enabled - - /* bitrate allocation control */ - int slow_gain_code; ///< slow gain code (sgaincod) - int slow_decay_code; ///< slow decay code (sdcycod) - int fast_decay_code; ///< fast decay code (fdcycod) - int db_per_bit_code; ///< dB/bit code (dbpbcod) - int floor_code; ///< floor code (floorcod) - AC3BitAllocParameters bit_alloc; ///< bit allocation parameters - int coarse_snr_offset; ///< coarse SNR offsets (csnroffst) - int fast_gain_code[AC3_MAX_CHANNELS]; ///< fast gain codes (signal-to-mask ratio) (fgaincod) - int fine_snr_offset[AC3_MAX_CHANNELS]; ///< fine SNR offsets (fsnroffst) - int frame_bits_fixed; ///< number of non-coefficient bits for fixed parameters - int frame_bits; ///< all frame bits except exponents and mantissas - int exponent_bits; ///< number of bits used for exponents - - SampleType *windowed_samples; - SampleType **planar_samples; - uint8_t *bap_buffer; - uint8_t *bap1_buffer; - CoefType *mdct_coef_buffer; - int32_t *fixed_coef_buffer; - uint8_t *exp_buffer; - uint8_t *grouped_exp_buffer; - int16_t *psd_buffer; - int16_t *band_psd_buffer; - int16_t *mask_buffer; - int16_t *qmant_buffer; - uint8_t *cpl_coord_exp_buffer; - uint8_t *cpl_coord_mant_buffer; - - uint8_t exp_strategy[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< exponent strategies - uint8_t frame_exp_strategy[AC3_MAX_CHANNELS]; ///< frame exp strategy index - int use_frame_exp_strategy; ///< indicates use of frame exp strategy - uint8_t exp_ref_block[AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< reference blocks for EXP_REUSE - uint8_t *ref_bap [AC3_MAX_CHANNELS][AC3_MAX_BLOCKS]; ///< bit allocation pointers (bap) - int ref_bap_set; ///< indicates if ref_bap pointers have been set - - /* fixed vs. float function pointers */ - void (*mdct_end)(struct AC3EncodeContext *s); - int (*mdct_init)(struct AC3EncodeContext *s); - - /* fixed vs. float templated function pointers */ - int (*allocate_sample_buffers)(struct AC3EncodeContext *s); - - /* AC-3 vs. E-AC-3 function pointers */ - void (*output_frame_header)(struct AC3EncodeContext *s); -} AC3EncodeContext; - - -extern const uint64_t ff_ac3_channel_layouts[19]; - -int ff_ac3_encode_init(AVCodecContext *avctx); - -int ff_ac3_encode_close(AVCodecContext *avctx); - -int ff_ac3_validate_metadata(AC3EncodeContext *s); - -void ff_ac3_adjust_frame_size(AC3EncodeContext *s); - -void ff_ac3_compute_coupling_strategy(AC3EncodeContext *s); - -void ff_ac3_apply_rematrixing(AC3EncodeContext *s); - -void ff_ac3_process_exponents(AC3EncodeContext *s); - -int ff_ac3_compute_bit_allocation(AC3EncodeContext *s); - -void ff_ac3_group_exponents(AC3EncodeContext *s); - -void ff_ac3_quantize_mantissas(AC3EncodeContext *s); - -void ff_ac3_output_frame(AC3EncodeContext *s, unsigned char *frame); - - -/* prototypes for functions in ac3enc_fixed.c and ac3enc_float.c */ - -void ff_ac3_fixed_mdct_end(AC3EncodeContext *s); -void ff_ac3_float_mdct_end(AC3EncodeContext *s); - -int ff_ac3_fixed_mdct_init(AC3EncodeContext *s); -int ff_ac3_float_mdct_init(AC3EncodeContext *s); - - -/* prototypes for functions in ac3enc_template.c */ - -int ff_ac3_fixed_allocate_sample_buffers(AC3EncodeContext *s); -int ff_ac3_float_allocate_sample_buffers(AC3EncodeContext *s); - -int ff_ac3_fixed_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr); -int ff_ac3_float_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, - const AVFrame *frame, int *got_packet_ptr); - -#endif /* AVCODEC_AC3ENC_H */ |