rw2dec.c File Reference

Panasonic RW2 decoder, RawFormat 8 only (S1II, S5II, GH6). More...

#include "libavutil/internal.h"
#include "libavutil/buffer.h"
#include "libavutil/mem.h"
#include "libavutil/raw_color_params.h"
#include "libavutil/reverse.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "exif.h"
#include "exif_internal.h"
#include "get_bits.h"
#include "hwaccel_internal.h"
#include "thread.h"
#include "tiff_common.h"
#include "rw2.h"

Go to the source code of this file.

Macros
#define	BITSTREAM_READER_LE
#define	CACHED_BITSTREAM_READER   1
#define	RW2_VLC_BITS   11
#define	RW2_JOINT_BITS   16 /* longest code with its magnitude folded in */
#define	RW2_SYM_DELTA   0x2000 /* joint symbols: delta + RW2_SYM_DELTA */
#define	RW2_SYM_ESC   0x4000 /* other categories: RW2_SYM_ESC + category */

Functions
static av_always_inline int	get_delta (const RW2DecContext *s, GetBitContext *bc, int *delta)
static int	gamma_curve (const RW2Coding *c, uint32_t v)
static int	build_tables (RW2DecContext *s)
static int	decode_stripe (AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
static int	read_array_count (GetByteContext *gb, unsigned type, unsigned count, unsigned expected, int max)
static int	parse_header (RW2Header *h, const uint8_t *data, int size)
static int	check_stripes (AVCodecContext *avctx, const RW2Header *h, int payload_size)
static enum AVPixelFormat	get_pixel_format (AVCodecContext *avctx, enum AVPixelFormat pix_fmt)
static int	export_exif (AVCodecContext *avctx, AVFrame *frame, const uint8_t *data, int size)
static int	export_metadata (AVCodecContext *avctx, AVFrame *frame, const uint8_t *hdr, int hdr_size)
static int	decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
static av_cold int	decode_init (AVCodecContext *avctx)
static av_cold int	decode_end (AVCodecContext *avctx)

Variables
const FFCodec	ff_rw2_decoder

Detailed Description

Panasonic RW2 decoder, RawFormat 8 only (S1II, S5II, GH6).

Bit-exact with LibRaw's pana8.cpp, quirks included.

Input is the whole file as one packet.

Definition in file rw2dec.c.

Macro Definition Documentation

BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 36 of file rw2dec.c.

CACHED_BITSTREAM_READER

#define CACHED_BITSTREAM_READER   1

Definition at line 37 of file rw2dec.c.

RW2_VLC_BITS

#define RW2_VLC_BITS   11

Definition at line 51 of file rw2dec.c.

Referenced by build_tables(), and get_delta().

RW2_JOINT_BITS

#define RW2_JOINT_BITS   16 /* longest code with its magnitude folded in */

Definition at line 52 of file rw2dec.c.

Referenced by build_tables().

RW2_SYM_DELTA

#define RW2_SYM_DELTA   0x2000 /* joint symbols: delta + RW2_SYM_DELTA */

Definition at line 53 of file rw2dec.c.

Referenced by build_tables(), and get_delta().

RW2_SYM_ESC

#define RW2_SYM_ESC   0x4000 /* other categories: RW2_SYM_ESC + category */

Definition at line 54 of file rw2dec.c.

Referenced by build_tables(), and get_delta().

Function Documentation

get_delta()

static av_always_inline int get_delta ( const RW2DecContext * s, GetBitContext * bc, int * delta )

static

Definition at line 56 of file rw2dec.c.

Referenced by decode_stripe().

gamma_curve()

static int gamma_curve ( const RW2Coding * c, uint32_t v )

static

Definition at line 86 of file rw2dec.c.

Referenced by build_tables().

build_tables()

static int build_tables ( RW2DecContext * s )

static

Definition at line 108 of file rw2dec.c.

Referenced by decode_frame().

decode_stripe()

static int decode_stripe ( AVCodecContext * avctx, void * tdata, int jobnr, int threadnr )

static

Definition at line 147 of file rw2dec.c.

Referenced by decode_frame().

read_array_count()

static int read_array_count ( GetByteContext * gb, unsigned type, unsigned count, unsigned expected, int max )

static

Definition at line 202 of file rw2dec.c.

Referenced by parse_header().

parse_header()

static int parse_header ( RW2Header * h, const uint8_t * data, int size )

static

Definition at line 213 of file rw2dec.c.

Referenced by decode_frame().

check_stripes()

static int check_stripes ( AVCodecContext * avctx, const RW2Header * h, int payload_size )

static

Definition at line 349 of file rw2dec.c.

Referenced by decode_frame().

get_pixel_format()

static enum AVPixelFormat get_pixel_format ( AVCodecContext * avctx, enum AVPixelFormat pix_fmt )

static

Definition at line 377 of file rw2dec.c.

Referenced by decode_frame().

export_exif()

static int export_exif ( AVCodecContext * avctx, AVFrame * frame, const uint8_t * data, int size )

static

Definition at line 391 of file rw2dec.c.

Referenced by export_metadata().

export_metadata()

static int export_metadata ( AVCodecContext * avctx, AVFrame * frame, const uint8_t * hdr, int hdr_size )

static

Definition at line 420 of file rw2dec.c.

Referenced by decode_frame().

decode_frame()

static int decode_frame ( AVCodecContext * avctx, AVFrame * frame, int * got_frame, AVPacket * avpkt )

static

Definition at line 467 of file rw2dec.c.

decode_init()

static av_cold int decode_init ( AVCodecContext * avctx )

static

Definition at line 588 of file rw2dec.c.

decode_end()

static av_cold int decode_end ( AVCodecContext * avctx )

static

Definition at line 601 of file rw2dec.c.

Variable Documentation

ff_rw2_decoder

const FFCodec ff_rw2_decoder

Initial value:

= {
    .p.name         = "rw2",
    CODEC_LONG_NAME("Panasonic RW2"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_RW2,
    .priv_data_size = sizeof(RW2DecContext),
    .init           = decode_init,
    .close          = decode_end,
    FF_CODEC_DECODE_CB(decode_frame),
    UPDATE_THREAD_CONTEXT(update_thread_context),
    .p.capabilities = AV_CODEC_CAP_DR1 |
                      AV_CODEC_CAP_FRAME_THREADS |
                      AV_CODEC_CAP_SLICE_THREADS,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP |
                      FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
}

Definition at line 609 of file rw2dec.c.