#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "get_bits.h"

Data Structures
struct	DCACoreFrameHeader

Macros
#define	DCA_CORE_FRAME_HEADER_SIZE 18

#define	DCA_SPEAKER_LAYOUT_MONO (DCA_SPEAKER_MASK_C)

#define	DCA_SPEAKER_LAYOUT_STEREO (DCA_SPEAKER_MASK_L \| DCA_SPEAKER_MASK_R)

#define	DCA_SPEAKER_LAYOUT_2POINT1 (DCA_SPEAKER_LAYOUT_STEREO \| DCA_SPEAKER_MASK_LFE1)

#define	DCA_SPEAKER_LAYOUT_3_0 (DCA_SPEAKER_LAYOUT_STEREO \| DCA_SPEAKER_MASK_C)

#define	DCA_SPEAKER_LAYOUT_2_1 (DCA_SPEAKER_LAYOUT_STEREO \| DCA_SPEAKER_MASK_Cs)

#define	DCA_SPEAKER_LAYOUT_3_1 (DCA_SPEAKER_LAYOUT_3_0 \| DCA_SPEAKER_MASK_Cs)

#define	DCA_SPEAKER_LAYOUT_2_2 (DCA_SPEAKER_LAYOUT_STEREO \| DCA_SPEAKER_MASK_Ls \| DCA_SPEAKER_MASK_Rs)

#define	DCA_SPEAKER_LAYOUT_5POINT0 (DCA_SPEAKER_LAYOUT_3_0 \| DCA_SPEAKER_MASK_Ls \| DCA_SPEAKER_MASK_Rs)

#define	DCA_SPEAKER_LAYOUT_5POINT1 (DCA_SPEAKER_LAYOUT_5POINT0 \| DCA_SPEAKER_MASK_LFE1)

#define	DCA_SPEAKER_LAYOUT_7POINT0_WIDE (DCA_SPEAKER_LAYOUT_5POINT0 \| DCA_SPEAKER_MASK_Lw \| DCA_SPEAKER_MASK_Rw)

#define	DCA_SPEAKER_LAYOUT_7POINT1_WIDE (DCA_SPEAKER_LAYOUT_7POINT0_WIDE \| DCA_SPEAKER_MASK_LFE1)

#define	DCA_HAS_STEREO(mask) ((mask & DCA_SPEAKER_LAYOUT_STEREO) == DCA_SPEAKER_LAYOUT_STEREO)

Enumerations
enum	DCAParseError { DCA_PARSE_ERROR_SYNC_WORD = -1, DCA_PARSE_ERROR_DEFICIT_SAMPLES = -2, DCA_PARSE_ERROR_PCM_BLOCKS = -3, DCA_PARSE_ERROR_FRAME_SIZE = -4, DCA_PARSE_ERROR_AMODE = -5, DCA_PARSE_ERROR_SAMPLE_RATE = -6, DCA_PARSE_ERROR_RESERVED_BIT = -7, DCA_PARSE_ERROR_LFE_FLAG = -8, DCA_PARSE_ERROR_PCM_RES = -9, DCA_PARSE_ERROR_INVALIDDATA = -10 }

enum	DCASpeaker { DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R, DCA_SPEAKER_Ls, DCA_SPEAKER_Rs, DCA_SPEAKER_LFE1, DCA_SPEAKER_Cs, DCA_SPEAKER_Lsr, DCA_SPEAKER_Rsr, DCA_SPEAKER_Lss, DCA_SPEAKER_Rss, DCA_SPEAKER_Lc, DCA_SPEAKER_Rc, DCA_SPEAKER_Lh, DCA_SPEAKER_Ch, DCA_SPEAKER_Rh, DCA_SPEAKER_LFE2, DCA_SPEAKER_Lw, DCA_SPEAKER_Rw, DCA_SPEAKER_Oh, DCA_SPEAKER_Lhs, DCA_SPEAKER_Rhs, DCA_SPEAKER_Chr, DCA_SPEAKER_Lhr, DCA_SPEAKER_Rhr, DCA_SPEAKER_Cl, DCA_SPEAKER_Ll, DCA_SPEAKER_Rl, DCA_SPEAKER_RSV1, DCA_SPEAKER_RSV2, DCA_SPEAKER_RSV3, DCA_SPEAKER_RSV4, DCA_SPEAKER_COUNT }

enum	DCASpeakerMask { DCA_SPEAKER_MASK_C = 0x00000001, DCA_SPEAKER_MASK_L = 0x00000002, DCA_SPEAKER_MASK_R = 0x00000004, DCA_SPEAKER_MASK_Ls = 0x00000008, DCA_SPEAKER_MASK_Rs = 0x00000010, DCA_SPEAKER_MASK_LFE1 = 0x00000020, DCA_SPEAKER_MASK_Cs = 0x00000040, DCA_SPEAKER_MASK_Lsr = 0x00000080, DCA_SPEAKER_MASK_Rsr = 0x00000100, DCA_SPEAKER_MASK_Lss = 0x00000200, DCA_SPEAKER_MASK_Rss = 0x00000400, DCA_SPEAKER_MASK_Lc = 0x00000800, DCA_SPEAKER_MASK_Rc = 0x00001000, DCA_SPEAKER_MASK_Lh = 0x00002000, DCA_SPEAKER_MASK_Ch = 0x00004000, DCA_SPEAKER_MASK_Rh = 0x00008000, DCA_SPEAKER_MASK_LFE2 = 0x00010000, DCA_SPEAKER_MASK_Lw = 0x00020000, DCA_SPEAKER_MASK_Rw = 0x00040000, DCA_SPEAKER_MASK_Oh = 0x00080000, DCA_SPEAKER_MASK_Lhs = 0x00100000, DCA_SPEAKER_MASK_Rhs = 0x00200000, DCA_SPEAKER_MASK_Chr = 0x00400000, DCA_SPEAKER_MASK_Lhr = 0x00800000, DCA_SPEAKER_MASK_Rhr = 0x01000000, DCA_SPEAKER_MASK_Cl = 0x02000000, DCA_SPEAKER_MASK_Ll = 0x04000000, DCA_SPEAKER_MASK_Rl = 0x08000000 }

enum	DCASpeakerPair { DCA_SPEAKER_PAIR_C = 0x0001, DCA_SPEAKER_PAIR_LR = 0x0002, DCA_SPEAKER_PAIR_LsRs = 0x0004, DCA_SPEAKER_PAIR_LFE1 = 0x0008, DCA_SPEAKER_PAIR_Cs = 0x0010, DCA_SPEAKER_PAIR_LhRh = 0x0020, DCA_SPEAKER_PAIR_LsrRsr = 0x0040, DCA_SPEAKER_PAIR_Ch = 0x0080, DCA_SPEAKER_PAIR_Oh = 0x0100, DCA_SPEAKER_PAIR_LcRc = 0x0200, DCA_SPEAKER_PAIR_LwRw = 0x0400, DCA_SPEAKER_PAIR_LssRss = 0x0800, DCA_SPEAKER_PAIR_LFE2 = 0x1000, DCA_SPEAKER_PAIR_LhsRhs = 0x2000, DCA_SPEAKER_PAIR_Chr = 0x4000, DCA_SPEAKER_PAIR_LhrRhr = 0x8000 }

enum	DCARepresentationType { DCA_REPR_TYPE_LtRt = 2, DCA_REPR_TYPE_LhRh = 3 }

enum	DCAExtensionMask { DCA_CSS_CORE = 0x001, DCA_CSS_XXCH = 0x002, DCA_CSS_X96 = 0x004, DCA_CSS_XCH = 0x008, DCA_CSS_MASK = 0x00f, DCA_EXSS_CORE = 0x010, DCA_EXSS_XBR = 0x020, DCA_EXSS_XXCH = 0x040, DCA_EXSS_X96 = 0x080, DCA_EXSS_LBR = 0x100, DCA_EXSS_XLL = 0x200, DCA_EXSS_RSV1 = 0x400, DCA_EXSS_RSV2 = 0x800, DCA_EXSS_MASK = 0xff0 }

enum	DCADownMixType { DCA_DMIX_TYPE_1_0, DCA_DMIX_TYPE_LoRo, DCA_DMIX_TYPE_LtRt, DCA_DMIX_TYPE_3_0, DCA_DMIX_TYPE_2_1, DCA_DMIX_TYPE_2_2, DCA_DMIX_TYPE_3_1, DCA_DMIX_TYPE_COUNT }

Functions
static int	ff_dca_count_chs_for_mask (unsigned int mask)
	Return number of individual channels in DCASpeakerPair mask. More...

int	avpriv_dca_convert_bitstream (const uint8_t src, int src_size, uint8_t dst, int max_size)
	Convert bitstream to one representation based on sync marker. More...

int	avpriv_dca_parse_core_frame_header (DCACoreFrameHeader h, uint8_t buf, int size)
	Parse and validate core frame header. More...

int	ff_dca_parse_core_frame_header (DCACoreFrameHeader h, GetBitContext gb)

Variables
av_export const uint32_t	avpriv_dca_sample_rates [16]

const uint32_t	ff_dca_sampling_freqs [16]

const uint8_t	ff_dca_freq_ranges [16]

const uint8_t	ff_dca_bits_per_sample [8]

Macro Definition Documentation

#define DCA_CORE_FRAME_HEADER_SIZE 18

Definition at line 37 of file dca.h.

Referenced by dca_parse_params(), and dts_probe().

#define DCA_SPEAKER_LAYOUT_MONO (DCA_SPEAKER_MASK_C)

Definition at line 123 of file dca.h.

#define DCA_SPEAKER_LAYOUT_STEREO (DCA_SPEAKER_MASK_L | DCA_SPEAKER_MASK_R)

Definition at line 124 of file dca.h.

Referenced by chs_parse_header(), dcadec_init(), ff_dca_core_filter_frame(), ff_dca_xll_filter_frame(), parse_decoder_init(), and parse_sub_headers().

#define DCA_SPEAKER_LAYOUT_2POINT1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_LFE1)

Definition at line 125 of file dca.h.

#define DCA_SPEAKER_LAYOUT_3_0 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_C)

Definition at line 126 of file dca.h.

#define DCA_SPEAKER_LAYOUT_2_1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Cs)

Definition at line 127 of file dca.h.

#define DCA_SPEAKER_LAYOUT_3_1 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Cs)

Definition at line 128 of file dca.h.

#define DCA_SPEAKER_LAYOUT_2_2 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs)

Definition at line 129 of file dca.h.

#define DCA_SPEAKER_LAYOUT_5POINT0 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs)

Definition at line 130 of file dca.h.

Referenced by dcadec_init(), and parse_sub_headers().

#define DCA_SPEAKER_LAYOUT_5POINT1 (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_LFE1)

Definition at line 131 of file dca.h.

Referenced by dcadec_init(), and parse_sub_headers().

#define DCA_SPEAKER_LAYOUT_7POINT0_WIDE (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_Lw | DCA_SPEAKER_MASK_Rw)

Definition at line 132 of file dca.h.

Referenced by ff_dca_set_channel_layout().

#define DCA_SPEAKER_LAYOUT_7POINT1_WIDE (DCA_SPEAKER_LAYOUT_7POINT0_WIDE | DCA_SPEAKER_MASK_LFE1)

Definition at line 133 of file dca.h.

Referenced by ff_dca_set_channel_layout().

#define DCA_HAS_STEREO ( mask ) ((mask & DCA_SPEAKER_LAYOUT_STEREO) == DCA_SPEAKER_LAYOUT_STEREO)

Definition at line 135 of file dca.h.

Referenced by ff_dca_downmix_to_stereo_fixed(), ff_dca_downmix_to_stereo_float(), and ff_dca_xll_filter_frame().

Enumeration Type Documentation

enum DCAParseError

Enumerator
DCA_PARSE_ERROR_SYNC_WORD
DCA_PARSE_ERROR_DEFICIT_SAMPLES
DCA_PARSE_ERROR_PCM_BLOCKS
DCA_PARSE_ERROR_FRAME_SIZE
DCA_PARSE_ERROR_AMODE
DCA_PARSE_ERROR_SAMPLE_RATE
DCA_PARSE_ERROR_RESERVED_BIT
DCA_PARSE_ERROR_LFE_FLAG
DCA_PARSE_ERROR_PCM_RES
DCA_PARSE_ERROR_INVALIDDATA

Definition at line 39 of file dca.h.

enum DCASpeaker

Enumerator
DCA_SPEAKER_C
DCA_SPEAKER_L
DCA_SPEAKER_R
DCA_SPEAKER_Ls
DCA_SPEAKER_Rs
DCA_SPEAKER_LFE1
DCA_SPEAKER_Cs
DCA_SPEAKER_Lsr
DCA_SPEAKER_Rsr
DCA_SPEAKER_Lss
DCA_SPEAKER_Rss
DCA_SPEAKER_Lc
DCA_SPEAKER_Rc
DCA_SPEAKER_Lh
DCA_SPEAKER_Ch
DCA_SPEAKER_Rh
DCA_SPEAKER_LFE2
DCA_SPEAKER_Lw
DCA_SPEAKER_Rw
DCA_SPEAKER_Oh
DCA_SPEAKER_Lhs
DCA_SPEAKER_Rhs
DCA_SPEAKER_Chr
DCA_SPEAKER_Lhr
DCA_SPEAKER_Rhr
DCA_SPEAKER_Cl
DCA_SPEAKER_Ll
DCA_SPEAKER_Rl
DCA_SPEAKER_RSV1
DCA_SPEAKER_RSV2
DCA_SPEAKER_RSV3
DCA_SPEAKER_RSV4
DCA_SPEAKER_COUNT

Definition at line 79 of file dca.h.

enum DCASpeakerMask

Enumerator
DCA_SPEAKER_MASK_C
DCA_SPEAKER_MASK_L
DCA_SPEAKER_MASK_R
DCA_SPEAKER_MASK_Ls
DCA_SPEAKER_MASK_Rs
DCA_SPEAKER_MASK_LFE1
DCA_SPEAKER_MASK_Cs
DCA_SPEAKER_MASK_Lsr
DCA_SPEAKER_MASK_Rsr
DCA_SPEAKER_MASK_Lss
DCA_SPEAKER_MASK_Rss
DCA_SPEAKER_MASK_Lc
DCA_SPEAKER_MASK_Rc
DCA_SPEAKER_MASK_Lh
DCA_SPEAKER_MASK_Ch
DCA_SPEAKER_MASK_Rh
DCA_SPEAKER_MASK_LFE2
DCA_SPEAKER_MASK_Lw
DCA_SPEAKER_MASK_Rw
DCA_SPEAKER_MASK_Oh
DCA_SPEAKER_MASK_Lhs
DCA_SPEAKER_MASK_Rhs
DCA_SPEAKER_MASK_Chr
DCA_SPEAKER_MASK_Lhr
DCA_SPEAKER_MASK_Rhr
DCA_SPEAKER_MASK_Cl
DCA_SPEAKER_MASK_Ll
DCA_SPEAKER_MASK_Rl

Definition at line 92 of file dca.h.

enum DCASpeakerPair

Enumerator
DCA_SPEAKER_PAIR_C
DCA_SPEAKER_PAIR_LR
DCA_SPEAKER_PAIR_LsRs
DCA_SPEAKER_PAIR_LFE1
DCA_SPEAKER_PAIR_Cs
DCA_SPEAKER_PAIR_LhRh
DCA_SPEAKER_PAIR_LsrRsr
DCA_SPEAKER_PAIR_Ch
DCA_SPEAKER_PAIR_Oh
DCA_SPEAKER_PAIR_LcRc
DCA_SPEAKER_PAIR_LwRw
DCA_SPEAKER_PAIR_LssRss
DCA_SPEAKER_PAIR_LFE2
DCA_SPEAKER_PAIR_LhsRhs
DCA_SPEAKER_PAIR_Chr
DCA_SPEAKER_PAIR_LhrRhr

Definition at line 138 of file dca.h.

enum DCARepresentationType

Enumerator
DCA_REPR_TYPE_LtRt
DCA_REPR_TYPE_LhRh

Definition at line 165 of file dca.h.

enum DCAExtensionMask

Enumerator
DCA_CSS_CORE
DCA_CSS_XXCH
DCA_CSS_X96
DCA_CSS_XCH
DCA_CSS_MASK
DCA_EXSS_CORE
DCA_EXSS_XBR
DCA_EXSS_XXCH
DCA_EXSS_X96
DCA_EXSS_LBR
DCA_EXSS_XLL
DCA_EXSS_RSV1
DCA_EXSS_RSV2
DCA_EXSS_MASK

Definition at line 170 of file dca.h.

enum DCADownMixType

Enumerator
DCA_DMIX_TYPE_1_0
DCA_DMIX_TYPE_LoRo
DCA_DMIX_TYPE_LtRt
DCA_DMIX_TYPE_3_0
DCA_DMIX_TYPE_2_1
DCA_DMIX_TYPE_2_2
DCA_DMIX_TYPE_3_1
DCA_DMIX_TYPE_COUNT