dca.c File Reference

#include <stdint.h>
#include <string.h>
#include "libavutil/error.h"
#include "dca.h"
#include "dca_core.h"
#include "dca_syncwords.h"
#include "get_bits.h"
#include "put_bits.h"

Go to the source code of this file.

Functions
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	ff_dca_parse_core_frame_header (DCACoreFrameHeader *h, GetBitContext *gb)
	Parse and validate core frame header. More...
int	avpriv_dca_parse_core_frame_header (DCACoreFrameHeader *h, const uint8_t *buf, int size)
	Parse and validate core frame header. More...

Variables
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]

Function Documentation

avpriv_dca_convert_bitstream()

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.

Definition at line 49 of file dca.c.

Referenced by dca_parse_params(), dcadec_decode_frame(), and dts_probe().

ff_dca_parse_core_frame_header()

int ff_dca_parse_core_frame_header	(	DCACoreFrameHeader *	h,
		GetBitContext *	gb
	)

Parse and validate core frame header.

Parameters

[out]	h	Pointer to struct where header info is written.
[in]	gbc	BitContext containing the first 120 bits of the frame.

Returns

0 on success, negative DCA_PARSE_ERROR_ code on failure

Definition at line 86 of file dca.c.

Referenced by avpriv_dca_parse_core_frame_header(), and parse_frame_header().

avpriv_dca_parse_core_frame_header()

int avpriv_dca_parse_core_frame_header	(	DCACoreFrameHeader *	h,
		const uint8_t *	buf,
		int	size
	)

Parse and validate core frame header.

Parameters

[out]	h	Pointer to struct where header info is written.
[in]	buf	Pointer to the data buffer
[in]	size	Size of the data buffer

Returns

0 on success, negative AVERROR code on failure

Definition at line 144 of file dca.c.

Referenced by dca_parse_params(), and dts_probe().

Variable Documentation

ff_dca_sampling_freqs

const uint32_t ff_dca_sampling_freqs[16]

Initial value:

= {
      8000,  16000, 32000, 64000, 128000, 22050,  44100,  88200,
    176400, 352800, 12000, 24000,  48000, 96000, 192000, 384000,
}

Definition at line 36 of file dca.c.

Referenced by chs_parse_header(), dca_parse_params(), parse_decoder_init(), and parse_descriptor().

ff_dca_freq_ranges

const uint8_t ff_dca_freq_ranges[16]

Initial value:

= {
    0, 1, 2, 3, 4, 1, 2, 3, 4, 4, 0, 1, 2, 3, 4, 4
}

Definition at line 41 of file dca.c.

Referenced by dca_parse_params(), and parse_decoder_init().

ff_dca_bits_per_sample

const uint8_t ff_dca_bits_per_sample[8]

Initial value:

= {
    16, 16, 20, 20, 0, 24, 24, 0
}

Definition at line 45 of file dca.c.

Referenced by ff_dca_parse_core_frame_header(), and parse_frame_header().