photocd.c File Reference

#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "thread.h"

Go to the source code of this file.

Data Structures
struct	PhotoCDContext
struct	ImageInfo

Macros
#define	CACHED_BITSTREAM_READER   !ARCH_X86_32
#define	OFFSET(x)   offsetof(PhotoCDContext, x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static av_noinline void	interp_lowres (PhotoCDContext *s, AVFrame *picture, int width, int height)
static av_noinline void	interp_lines (uint8_t *ptr, int linesize, int width, int height)
static av_noinline void	interp_pixels (uint8_t *ptr, int linesize, int width, int height)
static av_noinline int	read_hufftable (AVCodecContext *avctx, VLC *vlc)
static av_noinline int	decode_huff (AVCodecContext *avctx, AVFrame *frame, int target_res, int curr_res)
static int	photocd_decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)
static av_cold int	photocd_decode_init (AVCodecContext *avctx)
static av_cold int	photocd_decode_close (AVCodecContext *avctx)

Variables
static const ImageInfo	img_info [6]
static const AVOption	options []
static const AVClass	photocd_class
const FFCodec	ff_photocd_decoder

Detailed Description

Kodak PhotoCD (a.k.a. ImagePac) image decoder

Supports resolutions up to 3072x2048.

Definition in file photocd.c.

Macro Definition Documentation

CACHED_BITSTREAM_READER

#define CACHED_BITSTREAM_READER   !ARCH_X86_32

Definition at line 32 of file photocd.c.

OFFSET

#define OFFSET

(

x

)

offsetof(PhotoCDContext, x)

Definition at line 446 of file photocd.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 447 of file photocd.c.

Function Documentation

interp_lowres()

static av_noinline void interp_lowres ( PhotoCDContext *  s, AVFrame *  picture, int  width, int  height  )

static

Definition at line 75 of file photocd.c.

Referenced by photocd_decode_frame().

interp_lines()

static av_noinline void interp_lines ( uint8_t *  ptr, int  linesize, int  width, int  height  )

static

Definition at line 143 of file photocd.c.

Referenced by photocd_decode_frame().

interp_pixels()

static av_noinline void interp_pixels ( uint8_t *  ptr, int  linesize, int  width, int  height  )

static

Definition at line 172 of file photocd.c.

Referenced by photocd_decode_frame().

read_hufftable()

static av_noinline int read_hufftable ( AVCodecContext *  avctx, VLC *  vlc  )

static

Definition at line 187 of file photocd.c.

Referenced by photocd_decode_frame().

decode_huff()

static av_noinline int decode_huff ( AVCodecContext *  avctx, AVFrame *  frame, int  target_res, int  curr_res  )

static

Definition at line 224 of file photocd.c.

Referenced by photocd_decode_frame().

photocd_decode_frame()

static int photocd_decode_frame ( AVCodecContext *  avctx, AVFrame *  p, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 293 of file photocd.c.

photocd_decode_init()

static av_cold int photocd_decode_init ( AVCodecContext *  avctx )

static

Definition at line 425 of file photocd.c.

photocd_decode_close()

static av_cold int photocd_decode_close ( AVCodecContext *  avctx )

static

Definition at line 436 of file photocd.c.

Variable Documentation

img_info

const ImageInfo img_info[6]

static

Initial value:

= {
    {8192,    192, 128},
    {47104,   384, 256},
    {196608,  768, 512},
    {0,      1536, 1024},
    {0,      3072, 2048},
    {0,      6144, 4096},
}

Definition at line 66 of file photocd.c.

Referenced by decode_huff(), interp_lowres(), and photocd_decode_frame().

options

const AVOption options[]

static

Initial value:

= {
    { "lowres",  "Lower the decoding resolution by a power of two",
        OFFSET(lowres), AV_OPT_TYPE_INT,  { .i64 = 0 }, 0, 4, VD },
    { NULL },
}

Definition at line 449 of file photocd.c.

photocd_class

const AVClass photocd_class

static

Initial value:

= {
    .class_name = "photocd",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 455 of file photocd.c.

ff_photocd_decoder

const FFCodec ff_photocd_decoder

Initial value:

= {
    .p.name         = "photocd",
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_PHOTOCD,
    .priv_data_size = sizeof(PhotoCDContext),
    .p.priv_class   = &photocd_class,
    .init           = photocd_decode_init,
    .close          = photocd_decode_close,
    FF_CODEC_DECODE_CB(photocd_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal  = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
    CODEC_LONG_NAME("Kodak Photo CD"),
}

Definition at line 462 of file photocd.c.