vqcdec.c File Reference

#include "avcodec.h"
#include "get_bits.h"
#include "codec_internal.h"
#include "decode.h"
#include "libavutil/mem.h"
#include "libavutil/thread.h"

Go to the source code of this file.

Data Structures
struct	VqcContext

Macros
#define	VECTOR_VLC_BITS   6

Enumerations
enum	{   SKIP_3 = 0x10, SKIP_4, SKIP_5, SKIP_6,   STOP_RUN, SIGNED_8BIT, SIGNED_6BIT }

Functions
static av_cold void	vqc_init_static_data (void)
static av_cold int	vqc_decode_init (AVCodecContext *avctx)
static int	seed_pow1 (int x)
static int	seed_pow2 (int x)
static int	bias (int x, int c)
static void	seed_codebooks (VqcContext *s, const int *seed)
static int	decode_vectors (VqcContext *s, const uint8_t *buf, int size, int width, int height)
static void	load_coeffs (VqcContext *s, const uint8_t *v, int width, int coeff_width)
static void	transform1 (const int16_t *a, const int16_t *b, int16_t *dst, int width)
static uint8_t	clip (int x)
static void	transform2 (const int16_t *a, const int16_t *b, uint8_t *dst, int width)
static void	decode_strip (VqcContext *s, uint8_t *dst, int stride, int width)
static void	decode_frame (VqcContext *s, int width, int height)
static int	vqc_decode_frame (AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)
static av_cold int	vqc_decode_end (AVCodecContext *avctx)

Variables
static const uint8_t	vector_nbits []
static const int8_t	vector_symbols []
static VLCElem	vector_vlc [1<< VECTOR_VLC_BITS]
const FFCodec	ff_vqc_decoder

Macro Definition Documentation

VECTOR_VLC_BITS

#define VECTOR_VLC_BITS   6

Definition at line 29 of file vqcdec.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
SKIP_3
SKIP_4
SKIP_5
SKIP_6
STOP_RUN
SIGNED_8BIT
SIGNED_6BIT

Definition at line 36 of file vqcdec.c.

Function Documentation

vqc_init_static_data()

static av_cold void vqc_init_static_data ( void  )

static

Definition at line 55 of file vqcdec.c.

Referenced by vqc_decode_init().

vqc_decode_init()

static av_cold int vqc_decode_init ( AVCodecContext *  avctx )

static

Definition at line 71 of file vqcdec.c.

seed_pow1()

static int seed_pow1 ( int  x )

static

Definition at line 105 of file vqcdec.c.

Referenced by vqc_decode_frame().

seed_pow2()

static int seed_pow2 ( int  x )

static

Definition at line 110 of file vqcdec.c.

Referenced by vqc_decode_frame().

bias()

static int bias ( int  x, int  c  )

static

Definition at line 115 of file vqcdec.c.

Referenced by adpcm_ms_compress_sample(), apply_lpc(), block_sse(), categorize(), compress_alpha(), copyadd_block(), dct_quantize_c(), dct_quantize_TMPL(), dct_quantize_trellis_c(), decfloat(), decode_tile(), dnxhd_10bit_dct_quantize_444(), dot_dsp(), dss_sp_sf_synthesis(), dv_set_class_number_sd(), ff_convert_matrix(), filter16_3x3(), filter16_5x5(), filter16_7x7(), filter16_column(), filter16_row(), filter_3x3(), filter_5x5(), filter_7x7(), filter_column(), filter_frame(), filter_row(), filter_slice(), hardthresh_c(), hexfloat(), init_thres2(), quantize(), seed_codebooks(), softthresh_c(), squared_diff_macroblock(), tile_do_block(), unpack_14(), yuv2rgb_full_1_template_lasx(), and yuv2rgb_full_1_template_lsx().

seed_codebooks()

static void seed_codebooks ( VqcContext *  s, const int *  seed  )

static

Definition at line 125 of file vqcdec.c.

Referenced by vqc_decode_frame().

decode_vectors()

static int decode_vectors ( VqcContext *  s, const uint8_t *  buf, int  size, int  width, int  height  )

static

Definition at line 145 of file vqcdec.c.

Referenced by vqc_decode_frame().

load_coeffs()

static void load_coeffs ( VqcContext *  s, const uint8_t *  v, int  width, int  coeff_width  )

static

Definition at line 199 of file vqcdec.c.

Referenced by decode_frame().

transform1()

static void transform1 ( const int16_t *  a, const int16_t *  b, int16_t *  dst, int  width  )

static

Definition at line 281 of file vqcdec.c.

Referenced by decode_strip().

clip()

static uint8_t clip ( int  x )

static

Definition at line 295 of file vqcdec.c.

Referenced by transform2().

transform2()

static void transform2 ( const int16_t *  a, const int16_t *  b, uint8_t *  dst, int  width  )

static

Definition at line 300 of file vqcdec.c.

Referenced by decode_strip().

decode_strip()

static void decode_strip ( VqcContext *  s, uint8_t *  dst, int  stride, int  width  )

static

Definition at line 316 of file vqcdec.c.

Referenced by decode_frame().

decode_frame()

static void decode_frame ( VqcContext *  s, int  width, int  height  )

static

Definition at line 341 of file vqcdec.c.

Referenced by vqc_decode_frame().

vqc_decode_frame()

static int vqc_decode_frame ( AVCodecContext *  avctx, AVFrame *  rframe, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 371 of file vqcdec.c.

vqc_decode_end()

static av_cold int vqc_decode_end ( AVCodecContext *  avctx )

static

Definition at line 420 of file vqcdec.c.

Variable Documentation

vector_nbits

const uint8_t vector_nbits[]

static

Initial value:

= {
    2, 4, 4, 4, 4, 2, 4, 4,
    6, 6, 6, 6, 6, 6, 6, 6
}

Definition at line 31 of file vqcdec.c.

Referenced by vqc_init_static_data().

vector_symbols

const int8_t vector_symbols[]

static

Initial value:

= {
    0, SKIP_3, SKIP_4, SKIP_5, SKIP_6, STOP_RUN, 1, -1,
    2, 3, 4, SIGNED_8BIT, -2, -3, -4, SIGNED_6BIT
}

Definition at line 48 of file vqcdec.c.

Referenced by vqc_init_static_data().

vector_vlc

VLCElem vector_vlc[1<< VECTOR_VLC_BITS]

static

Definition at line 53 of file vqcdec.c.

Referenced by decode_vectors(), and vqc_init_static_data().

ff_vqc_decoder

const FFCodec ff_vqc_decoder

Initial value:

= {
    .p.name         = "vqc",
    CODEC_LONG_NAME("ViewQuest VQC"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_VQC,
    .priv_data_size = sizeof(VqcContext),
    .init           = vqc_decode_init,
    .close          = vqc_decode_end,
    FF_CODEC_DECODE_CB(vqc_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 433 of file vqcdec.c.