libavcodec/binkaudio.c File Reference

Bink Audio decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "dsputil.h"
#include "fft.h"

Go to the source code of this file.

Data Structures
struct	BinkAudioContext
Defines
#define	ALT_BITSTREAM_READER_LE
#define	MAX_CHANNELS   2
#define	BINK_BLOCK_MAX_SIZE   (MAX_CHANNELS << 11)
Functions
static av_cold int	decode_init (AVCodecContext *avctx)
static float	get_float (GetBitContext *gb)
static void	decode_block (BinkAudioContext *s, short *out, int use_dct)
	Decode Bink Audio block.
static av_cold int	decode_end (AVCodecContext *avctx)
static void	get_bits_align32 (GetBitContext *s)
static int	decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
Variables
const uint16_t	ff_wma_critical_freqs [25]
static const uint8_t	rle_length_tab [16]
AVCodec	binkaudio_rdft_decoder
AVCodec	binkaudio_dct_decoder

---

Detailed Description

Bink Audio decoder.

Technical details here: http://wiki.multimedia.cx/index.php?title=Bink_Audio

Definition in file binkaudio.c.

---

Define Documentation

#define ALT_BITSTREAM_READER_LE

Definition at line 32 of file binkaudio.c.

#define BINK_BLOCK_MAX_SIZE   (MAX_CHANNELS << 11)

Definition at line 40 of file binkaudio.c.

#define MAX_CHANNELS   2

Definition at line 39 of file binkaudio.c.

---

Function Documentation

static void decode_block	(	BinkAudioContext *	s,
		short *	out,
		int	use_dct
	)			[static]

Decode Bink Audio block.

Parameters:

[out]

out

Output buffer (must contain s->block_size elements)

Definition at line 154 of file binkaudio.c.

static av_cold int decode_end

(

AVCodecContext *

avctx

)

[static]

Definition at line 246 of file binkaudio.c.

static int decode_frame	(	AVCodecContext *	avctx,
		void *	data,
		int *	data_size,
		AVPacket *	avpkt
	)			[static]

Definition at line 263 of file binkaudio.c.

static av_cold int decode_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 64 of file binkaudio.c.

static void get_bits_align32

(

GetBitContext *

s

)

[static]

Definition at line 257 of file binkaudio.c.

Referenced by decode_frame().

static float get_float

(

GetBitContext *

gb

)

[static]

Definition at line 137 of file binkaudio.c.

Referenced by decode_block().

---

Variable Documentation

AVCodec binkaudio_dct_decoder

Initial value:

 {
    "binkaudio_dct",
    AVMEDIA_TYPE_AUDIO,
    CODEC_ID_BINKAUDIO_DCT,
    sizeof(BinkAudioContext),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
    .long_name = NULL_IF_CONFIG_SMALL("Bink Audio (DCT)")
}

Definition at line 301 of file binkaudio.c.

AVCodec binkaudio_rdft_decoder

Initial value:

 {
    "binkaudio_rdft",
    AVMEDIA_TYPE_AUDIO,
    CODEC_ID_BINKAUDIO_RDFT,
    sizeof(BinkAudioContext),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
    .long_name = NULL_IF_CONFIG_SMALL("Bink Audio (RDFT)")
}

Definition at line 289 of file binkaudio.c.

const uint16_t ff_wma_critical_freqs[25]

Definition at line 33 of file wmadata.h.

Referenced by decode_init(), and ff_wma_init().

const uint8_t rle_length_tab[16] [static]

Initial value:

 {
    2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32, 64
}

Definition at line 146 of file binkaudio.c.

Referenced by decode_block().