hqx.c File Reference

#include <inttypes.h>
#include "libavutil/frame.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem_internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "canopus.h"
#include "codec_internal.h"
#include "get_bits.h"
#include "thread.h"
#include "vlc.h"
#include "hqxdsp.h"
#include "hqxvlc.h"

Go to the source code of this file.

Data Structures
struct	HQXSlice
struct	HQXContext

Macros
#define	HQX_HEADER_SIZE   59
#define	AC_IDX(q)
#define	Q(q)   ((unsigned)AC_IDX(q) << 29 | (q))

Typedefs
typedef int(*	mb_decode_func) (struct HQXContext *ctx, int slice_no, int x, int y)

Enumerations
enum	HQXFormat { HQX_422 = 0, HQX_444, HQX_422A, HQX_444A }

Functions
static void	put_blocks (HQXContext *ctx, int plane, int x, int y, int ilace, int16_t *block0, int16_t *block1, const uint8_t *quant)
static void	hqx_get_ac (GetBitContext *gb, const HQXAC *ac, int *runp, int *lev)
static int	decode_block (GetBitContext *gb, const VLCElem vlc[], const unsigned *quants, int dcb, int16_t block[64], int *last_dc)
static int	hqx_decode_422 (HQXContext *ctx, int slice_no, int x, int y)
static int	hqx_decode_422a (HQXContext *ctx, int slice_no, int x, int y)
static int	hqx_decode_444 (HQXContext *ctx, int slice_no, int x, int y)
static int	hqx_decode_444a (HQXContext *ctx, int slice_no, int x, int y)
static int	decode_slice (HQXContext *ctx, int slice_no)
static int	decode_slice_thread (AVCodecContext *avctx, void *arg, int slice_no, int threadnr)
static int	hqx_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_picture_ptr, AVPacket *avpkt)
static av_cold int	hqx_decode_close (AVCodecContext *avctx)
static av_cold int	hqx_decode_init (AVCodecContext *avctx)

Variables
static const unsigned	hqx_quants [16][4]
static const uint8_t	hqx_quant_luma [64]
static const uint8_t	hqx_quant_chroma [64]
static const int	shuffle_16 [16]
const FFCodec	ff_hqx_decoder

Macro Definition Documentation

HQX_HEADER_SIZE

#define HQX_HEADER_SIZE   59

Definition at line 76 of file hqx.c.

AC_IDX

#define AC_IDX

(

q

)

Value:

                   ((q) >= 128 ? HQX_AC_Q128 : (q) >= 64 ? HQX_AC_Q64 : \
                   (q) >=  32 ? HQX_AC_Q32  : (q) >= 16 ? HQX_AC_Q16 : \
                   (q) >=   8 ? HQX_AC_Q8   : HQX_AC_Q0)

Definition at line 78 of file hqx.c.

Q

#define Q

(

q

)

((unsigned)AC_IDX(q) << 29 | (q))

Typedef Documentation

mb_decode_func

typedef int(* mb_decode_func) (struct HQXContext *ctx, int slice_no, int x, int y)

Definition at line 49 of file hqx.c.

Enumeration Type Documentation

HQXFormat

enum HQXFormat

Enumerator
HQX_422
HQX_444
HQX_422A
HQX_444A

Definition at line 40 of file hqx.c.

Function Documentation

put_blocks()

static void put_blocks ( HQXContext *  ctx, int  plane, int  x, int  y, int  ilace, int16_t *  block0, int16_t *  block1, const uint8_t *  quant  )

inlinestatic

Definition at line 123 of file hqx.c.

Referenced by hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), and hqx_decode_444a().

hqx_get_ac()

static void hqx_get_ac ( GetBitContext *  gb, const HQXAC *  ac, int *  runp, int *  lev  )

inlinestatic

Definition at line 138 of file hqx.c.

Referenced by decode_block().

decode_block()

static int decode_block ( GetBitContext *  gb, const VLCElem  vlc[], const unsigned *  quants, int  dcb, int16_t  block[64], int *  last_dc  )

static

Definition at line 151 of file hqx.c.

Referenced by hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), and hqx_decode_444a().

hqx_decode_422()

static int hqx_decode_422 ( HQXContext *  ctx, int  slice_no, int  x, int  y  )

static

Definition at line 180 of file hqx.c.

Referenced by hqx_decode_frame().

hqx_decode_422a()

static int hqx_decode_422a ( HQXContext *  ctx, int  slice_no, int  x, int  y  )

static

Definition at line 215 of file hqx.c.

Referenced by hqx_decode_frame().

hqx_decode_444()

static int hqx_decode_444 ( HQXContext *  ctx, int  slice_no, int  x, int  y  )

static

Definition at line 264 of file hqx.c.

Referenced by hqx_decode_frame().

hqx_decode_444a()

static int hqx_decode_444a ( HQXContext *  ctx, int  slice_no, int  x, int  y  )

static

Definition at line 301 of file hqx.c.

Referenced by hqx_decode_frame().

decode_slice()

static int decode_slice ( HQXContext *  ctx, int  slice_no  )

static

Definition at line 353 of file hqx.c.

Referenced by decode_slice_thread().

decode_slice_thread()

static int decode_slice_thread ( AVCodecContext *  avctx, void *  arg, int  slice_no, int  threadnr  )

static

Definition at line 406 of file hqx.c.

Referenced by hqx_decode_frame().

hqx_decode_frame()

static int hqx_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_picture_ptr, AVPacket *  avpkt  )

static

Definition at line 429 of file hqx.c.

hqx_decode_close()

static av_cold int hqx_decode_close ( AVCodecContext *  avctx )

static

Definition at line 540 of file hqx.c.

hqx_decode_init()

static av_cold int hqx_decode_init ( AVCodecContext *  avctx )

static

Definition at line 549 of file hqx.c.

Variable Documentation

hqx_quants

const unsigned hqx_quants[16][4]

static

Initial value:

= {
#define Q(q) 
    { Q( 0x1), Q(  0x2), Q(  0x4), Q(  0x8) }, { Q( 0x1), Q( 0x3), Q(  0x6), Q(  0xC) },
    { Q( 0x2), Q(  0x4), Q(  0x8), Q( 0x10) }, { Q( 0x3), Q( 0x6), Q(  0xC), Q( 0x18) },
    { Q( 0x4), Q(  0x8), Q( 0x10), Q( 0x20) }, { Q( 0x6), Q( 0xC), Q( 0x18), Q( 0x30) },
    { Q( 0x8), Q( 0x10), Q( 0x20), Q( 0x40) },
                            { Q(0xA), Q(0x14), Q(0x28), Q(0x50) },
                                               { Q( 0xC), Q(0x18), Q( 0x30), Q( 0x60) },
    { Q(0x10), Q( 0x20), Q( 0x40), Q( 0x80) }, { Q(0x18), Q(0x30), Q( 0x60), Q( 0xC0) },
    { Q(0x20), Q( 0x40), Q( 0x80), Q(0x100) }, { Q(0x30), Q(0x60), Q( 0xC0), Q(0x180) },
    { Q(0x40), Q( 0x80), Q(0x100), Q(0x200) }, { Q(0x60), Q(0xC0), Q(0x180), Q(0x300) },
    { Q(0x80), Q(0x100), Q(0x200), Q(0x400) }
}

Definition at line 87 of file hqx.c.

Referenced by hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), and hqx_decode_444a().

hqx_quant_luma

const uint8_t hqx_quant_luma[64]

static

Initial value:

= {
    16,  16,  16,  19,  19,  19,  42,  44,
    16,  16,  19,  19,  19,  38,  43,  45,
    16,  19,  19,  19,  40,  41,  45,  48,
    19,  19,  19,  40,  41,  42,  46,  49,
    19,  19,  40,  41,  42,  43,  48, 101,
    19,  38,  41,  42,  43,  44,  98, 104,
    42,  43,  45,  46,  48,  98, 109, 116,
    44,  45,  48,  49, 101, 104, 116, 123,
}

Definition at line 101 of file hqx.c.

Referenced by hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), and hqx_decode_444a().

hqx_quant_chroma

const uint8_t hqx_quant_chroma[64]

static

Initial value:

= {
    16,  16,  19,  25,  26,  26,  42,  44,
    16,  19,  25,  25,  26,  38,  43,  91,
    19,  25,  26,  27,  40,  41,  91,  96,
    25,  25,  27,  40,  41,  84,  93, 197,
    26,  26,  40,  41,  84,  86, 191, 203,
    26,  38,  41,  84,  86, 177, 197, 209,
    42,  43,  91,  93, 191, 197, 219, 232,
    44,  91,  96, 197, 203, 209, 232, 246,
}

Definition at line 112 of file hqx.c.

Referenced by hqx_decode_422(), hqx_decode_422a(), hqx_decode_444(), and hqx_decode_444a().

shuffle_16

const int shuffle_16[16]

static

Initial value:

= {
    0, 5, 11, 14, 2, 7, 9, 13, 1, 4, 10, 15, 3, 6, 8, 12
}

Definition at line 349 of file hqx.c.

Referenced by decode_slice().

ff_hqx_decoder

const FFCodec ff_hqx_decoder

Initial value:

= {
    .p.name         = "hqx",
    CODEC_LONG_NAME("Canopus HQX"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_HQX,
    .priv_data_size = sizeof(HQXContext),
    .init           = hqx_decode_init,
    FF_CODEC_DECODE_CB(hqx_decode_frame),
    .close          = hqx_decode_close,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS |
                      AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 566 of file hqx.c.