dolby_e.c File Reference

#include "libavutil/float_dsp.h"
#include "libavutil/thread.h"
#include "libavutil/mem.h"
#include "internal.h"
#include "get_bits.h"
#include "put_bits.h"
#include "dolby_e.h"
#include "fft.h"

Go to the source code of this file.

Functions
static int	skip_input (DBEContext *s, int nb_words)
static int	parse_key (DBEContext *s)
static int	convert_input (DBEContext *s, int nb_words, int key)
static int	parse_metadata (DBEContext *s)
static int	parse_metadata_ext (DBEContext *s)
static void	unbias_exponents (DBEContext *s, DBEChannel *c, DBEGroup *g)
static int	parse_exponents (DBEContext *s, DBEChannel *c)
static int	log_add (int a, int b)
static void	calc_lowcomp (int *msk_val)
static void	bit_allocate (int nb_exponent, int nb_code, int fr_code, int *exp, int *bap, int fg_spc, int fg_ofs, int msk_mod, int snr_ofs)
static int	parse_bit_alloc (DBEContext *s, DBEChannel *c)
static int	parse_indices (DBEContext *s, DBEChannel *c)
static int	parse_mantissas (DBEContext *s, DBEChannel *c)
static int	parse_channel (DBEContext *s, int ch, int seg_id)
static int	parse_audio (DBEContext *s, int start, int end, int seg_id)
static int	parse_meter (DBEContext *s)
static void	imdct_calc (DBEContext *s, DBEGroup *g, float *result, float *values)
static void	transform (DBEContext *s, DBEChannel *c, float *history, float *output)
static void	apply_gain (DBEContext *s, int begin, int end, float *output)
static int	filter_frame (DBEContext *s, AVFrame *frame)
static int	dolby_e_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static av_cold void	dolby_e_flush (AVCodecContext *avctx)
static av_cold int	dolby_e_close (AVCodecContext *avctx)
static av_cold int	dolby_e_init (AVCodecContext *avctx)

Variables
AVCodec	ff_dolby_e_decoder

Function Documentation

skip_input()

static int skip_input ( DBEContext *  s, int  nb_words  )

static

Definition at line 31 of file dolby_e.c.

Referenced by parse_audio(), parse_key(), parse_metadata(), parse_metadata_ext(), and parse_meter().

parse_key()

static int parse_key ( DBEContext *  s )

static

Definition at line 43 of file dolby_e.c.

Referenced by amf_tag_contents(), amf_tag_skip(), parse_audio(), and parse_metadata().

convert_input()

static int convert_input ( DBEContext *  s, int  nb_words, int  key  )

static

Definition at line 55 of file dolby_e.c.

Referenced by parse_audio(), and parse_metadata().

parse_metadata()

static int parse_metadata ( DBEContext *  s )

static

Definition at line 91 of file dolby_e.c.

Referenced by dolby_e_decode_frame().

parse_metadata_ext()

static int parse_metadata_ext ( DBEContext *  s )

static

Definition at line 150 of file dolby_e.c.

Referenced by dolby_e_decode_frame().

unbias_exponents()

static void unbias_exponents ( DBEContext *  s, DBEChannel *  c, DBEGroup *  g  )

static

Definition at line 157 of file dolby_e.c.

Referenced by parse_exponents().

parse_exponents()

static int parse_exponents ( DBEContext *  s, DBEChannel *  c  )

static

Definition at line 174 of file dolby_e.c.

Referenced by encode_block(), and parse_channel().

log_add()

static int log_add ( int  a, int  b  )

inlinestatic

Definition at line 193 of file dolby_e.c.

Referenced by bit_allocate(), and calc_lowcomp().

calc_lowcomp()

static void calc_lowcomp ( int *  msk_val )

static

Definition at line 199 of file dolby_e.c.

Referenced by bit_allocate().

bit_allocate()

static void bit_allocate ( int  nb_exponent, int  nb_code, int  fr_code, int *  exp, int *  bap, int  fg_spc, int  fg_ofs, int  msk_mod, int  snr_ofs  )

static

Definition at line 232 of file dolby_e.c.

Referenced by parse_bit_alloc().

parse_bit_alloc()

static int parse_bit_alloc ( DBEContext *  s, DBEChannel *  c  )

static

Definition at line 281 of file dolby_e.c.

Referenced by parse_channel().

parse_indices()

static int parse_indices ( DBEContext *  s, DBEChannel *  c  )

static

Definition at line 327 of file dolby_e.c.

Referenced by parse_channel().

parse_mantissas()

static int parse_mantissas ( DBEContext *  s, DBEChannel *  c  )

static

Definition at line 358 of file dolby_e.c.

Referenced by parse_channel().

parse_channel()

static int parse_channel ( DBEContext *  s, int  ch, int  seg_id  )

static

Definition at line 414 of file dolby_e.c.

Referenced by parse_audio().

parse_audio()

static int parse_audio ( DBEContext *  s, int  start, int  end, int  seg_id  )

static

Definition at line 464 of file dolby_e.c.

Referenced by dolby_e_decode_frame().

parse_meter()

static int parse_meter ( DBEContext *  s )

static

Definition at line 490 of file dolby_e.c.

Referenced by dolby_e_decode_frame().

imdct_calc()

static void imdct_calc ( DBEContext *  s, DBEGroup *  g, float *  result, float *  values  )

static

Definition at line 497 of file dolby_e.c.

Referenced by transform().

transform()

static void transform ( DBEContext *  s, DBEChannel *  c, float *  history, float *  output  )

static

Definition at line 523 of file dolby_e.c.

Referenced by filter_frame().

apply_gain()

static void apply_gain ( DBEContext *  s, int  begin, int  end, float *  output  )

static

Definition at line 548 of file dolby_e.c.

Referenced by filter_frame().

filter_frame()

static int filter_frame ( DBEContext *  s, AVFrame *  frame  )

static

Definition at line 565 of file dolby_e.c.

Referenced by config_output(), dolby_e_decode_frame(), ff_filter_frame(), ff_filter_frame_framed(), gate(), and plot_spectrum_column().

dolby_e_decode_frame()

static int dolby_e_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame_ptr, AVPacket *  avpkt  )

static

Definition at line 593 of file dolby_e.c.

dolby_e_flush()

static av_cold void dolby_e_flush ( AVCodecContext *  avctx )

static

Definition at line 665 of file dolby_e.c.

dolby_e_close()

static av_cold int dolby_e_close ( AVCodecContext *  avctx )

static

Definition at line 672 of file dolby_e.c.

dolby_e_init()

static av_cold int dolby_e_init ( AVCodecContext *  avctx )

static

Definition at line 684 of file dolby_e.c.

Variable Documentation

ff_dolby_e_decoder

AVCodec ff_dolby_e_decoder

Initial value:

= {
    .name           = "dolby_e",
    .long_name      = NULL_IF_CONFIG_SMALL("Dolby E"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_DOLBY_E,
    .priv_data_size = sizeof(DBEContext),
    .init           = dolby_e_init,
    .decode         = dolby_e_decode_frame,
    .close          = dolby_e_close,
    .flush          = dolby_e_flush,
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
    .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE },
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 705 of file dolby_e.c.