#include "dcaadpcm.h"
#include "dcadec.h"
#include "dcadata.h"
#include "dcahuff.h"
#include "dcamath.h"
#include "dca_syncwords.h"

Enumerations
enum	HeaderType { HEADER_CORE, HEADER_XCH, HEADER_XXCH }

Functions
static int	dca_get_vlc (GetBitContext s, DCAVLC v, int i)

static void	get_array (GetBitContext s, int32_t array, int size, int n)

static int	parse_frame_header (DCACoreDecoder *s)

static int	parse_coding_header (DCACoreDecoder *s, enum HeaderType header, int xch_base)

static int	parse_scale (DCACoreDecoder s, int scale_index, int sel)

static int	parse_joint_scale (DCACoreDecoder *s, int sel)

static int	parse_subframe_header (DCACoreDecoder *s, int sf, enum HeaderType header, int xch_base)

static int	decode_blockcodes (int code1, int code2, int levels, int32_t *audio)

static int	parse_block_codes (DCACoreDecoder s, int32_t audio, int abits)

static int	parse_huffman_codes (DCACoreDecoder s, int32_t audio, int abits, int sel)

static int	extract_audio (DCACoreDecoder s, int32_t audio, int abits, int ch)

static void	inverse_adpcm (int32_t *subband_samples, const int16_t vq_index, const int8_t *prediction_mode, int sb_start, int sb_end, int ofs, int len)

static int	parse_subframe_audio (DCACoreDecoder s, int sf, enum HeaderType header, int xch_base, int sub_pos, int *lfe_pos)

static void	erase_adpcm_history (DCACoreDecoder *s)

static int	alloc_sample_buffer (DCACoreDecoder *s)

static int	parse_frame_data (DCACoreDecoder *s, enum HeaderType header, int xch_base)

static int	parse_xch_frame (DCACoreDecoder *s)

static int	parse_xxch_frame (DCACoreDecoder *s)

static int	parse_xbr_subframe (DCACoreDecoder s, int xbr_base_ch, int xbr_nchannels, int xbr_nsubbands, int xbr_transition_mode, int sf, int *sub_pos)

static int	parse_xbr_frame (DCACoreDecoder *s)

static int	rand_x96 (DCACoreDecoder *s)

static int	parse_x96_subframe_audio (DCACoreDecoder s, int sf, int xch_base, int sub_pos)

static void	erase_x96_adpcm_history (DCACoreDecoder *s)

static int	alloc_x96_sample_buffer (DCACoreDecoder *s)

static int	parse_x96_subframe_header (DCACoreDecoder *s, int xch_base)

static int	parse_x96_coding_header (DCACoreDecoder *s, int exss, int xch_base)

static int	parse_x96_frame_data (DCACoreDecoder *s, int exss, int xch_base)

static int	parse_x96_frame (DCACoreDecoder *s)

static int	parse_x96_frame_exss (DCACoreDecoder *s)

static int	parse_aux_data (DCACoreDecoder *s)

static int	parse_optional_info (DCACoreDecoder *s)

int	ff_dca_core_parse (DCACoreDecoder s, uint8_t data, int size)

int	ff_dca_core_parse_exss (DCACoreDecoder s, uint8_t data, DCAExssAsset *asset)

static int	map_prm_ch_to_spkr (DCACoreDecoder *s, int ch)

static void	erase_dsp_history (DCACoreDecoder *s)

static void	set_filter_mode (DCACoreDecoder *s, int mode)

int	ff_dca_core_filter_fixed (DCACoreDecoder *s, int x96_synth)

static int	filter_frame_fixed (DCACoreDecoder s, AVFrame frame)

static int	filter_frame_float (DCACoreDecoder s, AVFrame frame)

int	ff_dca_core_filter_frame (DCACoreDecoder s, AVFrame frame)

av_cold void	ff_dca_core_flush (DCACoreDecoder *s)

av_cold int	ff_dca_core_init (DCACoreDecoder *s)

av_cold void	ff_dca_core_close (DCACoreDecoder *s)

Variables
static const int8_t	prm_ch_to_spkr_map [DCA_AMODE_COUNT][5]

static const uint8_t	audio_mode_ch_mask [DCA_AMODE_COUNT]

static const uint8_t	block_code_nbits [7]

Enumeration Type Documentation

◆ HeaderType

enum HeaderType

Enumerator
HEADER_CORE
HEADER_XCH
HEADER_XXCH

Definition at line 32 of file dca_core.c.

Function Documentation

◆ dca_get_vlc()

static int dca_get_vlc	(	GetBitContext *	s,
		DCAVLC *	v,
		int	i
	)

static

Definition at line 68 of file dca_core.c.

Referenced by parse_huffman_codes(), parse_joint_scale(), parse_scale(), parse_subframe_header(), and parse_x96_subframe_header().

◆ get_array()

static void get_array	(	GetBitContext *	s,
		int32_t *	array,
		int	size,
		int	n
	)

static

Definition at line 73 of file dca_core.c.

Referenced by extract_audio(), parse_subframe_audio(), and parse_xbr_subframe().

◆ parse_frame_header()

static int parse_frame_header ( DCACoreDecoder * s )

static

Definition at line 82 of file dca_core.c.

Referenced by ff_dca_core_parse().

◆ parse_coding_header()

static int parse_coding_header	(	DCACoreDecoder *	s,
		enum HeaderType	header,
		int	xch_base
	)

static

Definition at line 151 of file dca_core.c.

Referenced by parse_frame_data().

◆ parse_scale()

static int parse_scale	(	DCACoreDecoder *	s,
		int *	scale_index,
		int	sel
	)

inlinestatic

Definition at line 347 of file dca_core.c.

Referenced by parse_subframe_header(), and parse_x96_subframe_header().

◆ parse_joint_scale()

static int parse_joint_scale	(	DCACoreDecoder *	s,
		int	sel
	)

inlinestatic

Definition at line 376 of file dca_core.c.

Referenced by parse_subframe_header(), and parse_x96_subframe_header().

◆ parse_subframe_header()

static int parse_subframe_header	(	DCACoreDecoder *	s,
		int	sf,
		enum HeaderType	header,
		int	xch_base
	)

static

Definition at line 399 of file dca_core.c.

Referenced by parse_frame_data().

◆ decode_blockcodes()

static int decode_blockcodes	(	int	code1,
		int	code2,
		int	levels,
		int32_t *	audio
	)

inlinestatic

Definition at line 526 of file dca_core.c.

Referenced by parse_block_codes().

◆ parse_block_codes()

static int parse_block_codes	(	DCACoreDecoder *	s,
		int32_t *	audio,
		int	abits
	)

inlinestatic

Definition at line 546 of file dca_core.c.

Referenced by extract_audio(), and parse_xbr_subframe().

◆ parse_huffman_codes()

static int parse_huffman_codes	(	DCACoreDecoder *	s,
		int32_t *	audio,
		int	abits,
		int	sel
	)

inlinestatic

Definition at line 562 of file dca_core.c.

Referenced by extract_audio().

◆ extract_audio()

static int extract_audio	(	DCACoreDecoder *	s,
		int32_t *	audio,
		int	abits,
		int	ch
	)

inlinestatic

Definition at line 573 of file dca_core.c.

Referenced by parse_subframe_audio(), and parse_x96_subframe_audio().

◆ inverse_adpcm()

static void inverse_adpcm	(	int32_t **	subband_samples,
		const int16_t *	vq_index,
		const int8_t *	prediction_mode,
		int	sb_start,
		int	sb_end,
		int	ofs,
		int	len
	)

inlinestatic

Definition at line 600 of file dca_core.c.

Referenced by parse_subframe_audio(), and parse_x96_subframe_audio().

◆ parse_subframe_audio()

static int parse_subframe_audio	(	DCACoreDecoder *	s,
		int	sf,
		enum HeaderType	header,
		int	xch_base,
		int *	sub_pos,
		int *	lfe_pos
	)

static

Definition at line 621 of file dca_core.c.

Referenced by parse_frame_data().

◆ erase_adpcm_history()

static void erase_adpcm_history ( DCACoreDecoder * s )

static

Definition at line 758 of file dca_core.c.

Referenced by alloc_sample_buffer(), and ff_dca_core_flush().

◆ alloc_sample_buffer()

static int alloc_sample_buffer ( DCACoreDecoder * s )

static

Definition at line 771 of file dca_core.c.

Referenced by ff_dca_core_parse().

◆ parse_frame_data()

static int parse_frame_data	(	DCACoreDecoder *	s,
		enum HeaderType	header,
		int	xch_base
	)

static

Definition at line 799 of file dca_core.c.

Referenced by ff_dca_core_parse(), parse_xch_frame(), and parse_xxch_frame().

◆ parse_xch_frame()

static int parse_xch_frame ( DCACoreDecoder * s )

static

Definition at line 837 of file dca_core.c.

Referenced by ff_dca_core_parse_exss().

◆ parse_xxch_frame()

static int parse_xxch_frame ( DCACoreDecoder * s )

static

Definition at line 858 of file dca_core.c.

Referenced by ff_dca_core_parse_exss().

◆ parse_xbr_subframe()

static int parse_xbr_subframe	(	DCACoreDecoder *	s,
		int	xbr_base_ch,
		int	xbr_nchannels,
		int *	xbr_nsubbands,
		int	xbr_transition_mode,
		int	sf,
		int *	sub_pos
	)

static

Definition at line 935 of file dca_core.c.

Referenced by parse_xbr_frame().

◆ parse_xbr_frame()

static int parse_xbr_frame ( DCACoreDecoder * s )

static

Definition at line 1070 of file dca_core.c.

Referenced by ff_dca_core_parse_exss().

◆ rand_x96()

static int rand_x96 ( DCACoreDecoder * s )

static

Definition at line 1153 of file dca_core.c.

Referenced by parse_x96_subframe_audio().

◆ parse_x96_subframe_audio()

static int parse_x96_subframe_audio	(	DCACoreDecoder *	s,
		int	sf,
		int	xch_base,
		int *	sub_pos
	)

static

Definition at line 1159 of file dca_core.c.

Referenced by parse_x96_frame_data().

◆ erase_x96_adpcm_history()

static void erase_x96_adpcm_history ( DCACoreDecoder * s )

static

Definition at line 1267 of file dca_core.c.

Referenced by alloc_x96_sample_buffer(), and ff_dca_core_flush().

◆ alloc_x96_sample_buffer()

static int alloc_x96_sample_buffer ( DCACoreDecoder * s )

static

Definition at line 1280 of file dca_core.c.

Referenced by parse_x96_frame(), and parse_x96_frame_exss().

◆ parse_x96_subframe_header()

static int parse_x96_subframe_header	(	DCACoreDecoder *	s,
		int	xch_base
	)

static

Definition at line 1306 of file dca_core.c.

Referenced by parse_x96_frame_data().

◆ parse_x96_coding_header()

static int parse_x96_coding_header	(	DCACoreDecoder *	s,
		int	exss,
		int	xch_base
	)

static

Definition at line 1390 of file dca_core.c.

Referenced by parse_x96_frame_data().

◆ parse_x96_frame_data()

static int parse_x96_frame_data	(	DCACoreDecoder *	s,
		int	exss,
		int	xch_base
	)

static

Definition at line 1477 of file dca_core.c.

Referenced by parse_x96_frame(), and parse_x96_frame_exss().

◆ parse_x96_frame()

static int parse_x96_frame ( DCACoreDecoder * s )

static

Definition at line 1512 of file dca_core.c.

Referenced by ff_dca_core_parse_exss().

◆ parse_x96_frame_exss()

static int parse_x96_frame_exss ( DCACoreDecoder * s )

static

Definition at line 1541 of file dca_core.c.

Referenced by ff_dca_core_parse_exss().

◆ parse_aux_data()

static int parse_aux_data ( DCACoreDecoder * s )

static

Definition at line 1617 of file dca_core.c.

Referenced by parse_optional_info().

◆ parse_optional_info()

static int parse_optional_info ( DCACoreDecoder * s )

static

Definition at line 1685 of file dca_core.c.

Referenced by ff_dca_core_parse().

◆ ff_dca_core_parse()

int ff_dca_core_parse	(	DCACoreDecoder *	s,
		uint8_t *	data,
		int	size
	)

Definition at line 1798 of file dca_core.c.

Referenced by dcadec_decode_frame(), and ff_dca_core_dequantize().

◆ ff_dca_core_parse_exss()

int ff_dca_core_parse_exss	(	DCACoreDecoder *	s,
		uint8_t *	data,
		DCAExssAsset *	asset
	)

Definition at line 1831 of file dca_core.c.

Referenced by dcadec_decode_frame(), and ff_dca_core_dequantize().

◆ map_prm_ch_to_spkr()

static int map_prm_ch_to_spkr	(	DCACoreDecoder *	s,
		int	ch
	)

static

Definition at line 1908 of file dca_core.c.

Referenced by ff_dca_core_filter_fixed(), filter_frame_fixed(), and filter_frame_float().

◆ erase_dsp_history()

static void erase_dsp_history ( DCACoreDecoder * s )

static

Definition at line 1944 of file dca_core.c.

Referenced by ff_dca_core_flush(), and set_filter_mode().

◆ set_filter_mode()

static void set_filter_mode	(	DCACoreDecoder *	s,
		int	mode
	)

static

Definition at line 1951 of file dca_core.c.

Referenced by ff_dca_core_filter_fixed(), and filter_frame_float().

◆ ff_dca_core_filter_fixed()

int ff_dca_core_filter_fixed	(	DCACoreDecoder *	s,
		int	x96_synth
	)

Definition at line 1959 of file dca_core.c.

Referenced by dcadec_decode_frame(), ff_dca_core_dequantize(), and filter_frame_fixed().

◆ filter_frame_fixed()

static int filter_frame_fixed	(	DCACoreDecoder *	s,
		AVFrame *	frame
	)

static

Definition at line 2063 of file dca_core.c.

Referenced by ff_dca_core_filter_frame().

◆ filter_frame_float()

static int filter_frame_float	(	DCACoreDecoder *	s,
		AVFrame *	frame
	)

static

Definition at line 2160 of file dca_core.c.

Referenced by ff_dca_core_filter_frame().

◆ ff_dca_core_filter_frame()

int ff_dca_core_filter_frame	(	DCACoreDecoder *	s,
		AVFrame *	frame
	)

Definition at line 2345 of file dca_core.c.

Referenced by dcadec_decode_frame(), and ff_dca_core_dequantize().

◆ ff_dca_core_flush()

av_cold void ff_dca_core_flush ( DCACoreDecoder * s )

Definition at line 2399 of file dca_core.c.

Referenced by dcadec_flush(), and ff_dca_core_dequantize().

◆ ff_dca_core_init()

av_cold int ff_dca_core_init ( DCACoreDecoder * s )

Definition at line 2412 of file dca_core.c.

Referenced by dcadec_init(), and ff_dca_core_dequantize().

◆ ff_dca_core_close()

av_cold void ff_dca_core_close ( DCACoreDecoder * s )

Definition at line 2430 of file dca_core.c.

Referenced by dcadec_close(), and ff_dca_core_dequantize().

Variable Documentation

◆ prm_ch_to_spkr_map

const int8_t prm_ch_to_spkr_map[DCA_AMODE_COUNT][5]

static

Initial value:

= {
    { DCA_SPEAKER_C,            -1,             -1,             -1,             -1 },
    { DCA_SPEAKER_L, DCA_SPEAKER_R,             -1,             -1,             -1 },
    { DCA_SPEAKER_L, DCA_SPEAKER_R,             -1,             -1,             -1 },
    { DCA_SPEAKER_L, DCA_SPEAKER_R,             -1,             -1,             -1 },
    { DCA_SPEAKER_L, DCA_SPEAKER_R,             -1,             -1,             -1 },
    { DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R ,             -1,             -1 },
    { DCA_SPEAKER_L, DCA_SPEAKER_R, DCA_SPEAKER_Cs,             -1,             -1 },
    { DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R , DCA_SPEAKER_Cs,             -1 },
    { DCA_SPEAKER_L, DCA_SPEAKER_R, DCA_SPEAKER_Ls, DCA_SPEAKER_Rs,             -1 },
    { DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R,  DCA_SPEAKER_Ls, DCA_SPEAKER_Rs }
}

Definition at line 38 of file dca_core.c.

Referenced by map_prm_ch_to_spkr().

◆ audio_mode_ch_mask

const uint8_t audio_mode_ch_mask[DCA_AMODE_COUNT]

static

Initial value:

= {
    DCA_SPEAKER_LAYOUT_MONO,
    DCA_SPEAKER_LAYOUT_STEREO,
    DCA_SPEAKER_LAYOUT_STEREO,
    DCA_SPEAKER_LAYOUT_STEREO,
    DCA_SPEAKER_LAYOUT_STEREO,
    DCA_SPEAKER_LAYOUT_3_0,
    DCA_SPEAKER_LAYOUT_2_1,
    DCA_SPEAKER_LAYOUT_3_1,
    DCA_SPEAKER_LAYOUT_2_2,
    DCA_SPEAKER_LAYOUT_5POINT0
}

Definition at line 51 of file dca_core.c.

Referenced by ff_dca_core_parse_exss(), and parse_coding_header().

◆ block_code_nbits

const uint8_t block_code_nbits[7]

static

Initial value:

= {
    7, 10, 12, 13, 15, 17, 19
}

Definition at line 64 of file dca_core.c.

Referenced by parse_block_codes().

Enumerations

Functions

Variables

Enumeration Type Documentation

◆ HeaderType

Function Documentation

◆ dca_get_vlc()

◆ get_array()

◆ parse_frame_header()

◆ parse_coding_header()

◆ parse_scale()

◆ parse_joint_scale()

◆ parse_subframe_header()

◆ decode_blockcodes()

◆ parse_block_codes()

◆ parse_huffman_codes()

◆ extract_audio()

◆ inverse_adpcm()

◆ parse_subframe_audio()

◆ erase_adpcm_history()

◆ alloc_sample_buffer()

◆ parse_frame_data()

◆ parse_xch_frame()

◆ parse_xxch_frame()

◆ parse_xbr_subframe()

◆ parse_xbr_frame()

◆ rand_x96()

◆ parse_x96_subframe_audio()

◆ erase_x96_adpcm_history()

◆ alloc_x96_sample_buffer()

◆ parse_x96_subframe_header()

◆ parse_x96_coding_header()

◆ parse_x96_frame_data()

◆ parse_x96_frame()

◆ parse_x96_frame_exss()

◆ parse_aux_data()

◆ parse_optional_info()

◆ ff_dca_core_parse()

◆ ff_dca_core_parse_exss()

◆ map_prm_ch_to_spkr()

◆ erase_dsp_history()

◆ set_filter_mode()

◆ ff_dca_core_filter_fixed()

◆ filter_frame_fixed()

◆ filter_frame_float()

◆ ff_dca_core_filter_frame()

◆ ff_dca_core_flush()

◆ ff_dca_core_init()

◆ ff_dca_core_close()

Variable Documentation

◆ prm_ch_to_spkr_map

◆ audio_mode_ch_mask

◆ block_code_nbits