pgxdec.c File Reference

#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"

Go to the source code of this file.

Macros
#define	WRITE_FRAME(D, PIXEL, suffix)

Functions
static int	pgx_get_number (AVCodecContext *avctx, GetByteContext *g, int *number)
static int	pgx_decode_header (AVCodecContext *avctx, GetByteContext *g, int *depth, int *width, int *height, int *sign)
static int	pgx_decode_frame (AVCodecContext *avctx, AVFrame *p, int *got_frame, AVPacket *avpkt)

Variables
const FFCodec	ff_pgx_decoder

Macro Definition Documentation

WRITE_FRAME

#define WRITE_FRAME	(		D,
			PIXEL,
			suffix
	)

Value:

    static inline void write_frame_ ##D(AVFrame *frame, GetByteContext *g, \
                                        int width, int height, int sign, int depth)         \
    {                                                                                       \
        const unsigned offset = sign ? (1 << (D - 1)) : 0;                                  \
        int i, j;                                                                           \
        for (i = 0; i < height; i++) {                                                      \
            PIXEL *line = (PIXEL*)(frame->data[0] + i * frame->linesize[0]);                \
            for (j = 0; j < width; j++) {                                                   \
                unsigned val = bytestream2_get_ ##suffix##u(g) << (D - depth);              \
                val ^= offset;                                                              \
                *(line + j) = val;                                                          \
            }                                                                               \
        }                                                                                   \
    }                                                                                       \

Definition at line 93 of file pgxdec.c.

Function Documentation

pgx_get_number()

static int pgx_get_number ( AVCodecContext *  avctx, GetByteContext *  g, int *  number  )

static

Definition at line 27 of file pgxdec.c.

Referenced by pgx_decode_header().

pgx_decode_header()

static int pgx_decode_header ( AVCodecContext *  avctx, GetByteContext *  g, int *  depth, int *  width, int *  height, int *  sign  )

static

Definition at line 52 of file pgxdec.c.

Referenced by pgx_decode_frame().

pgx_decode_frame()

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

static

Definition at line 112 of file pgxdec.c.

Variable Documentation

ff_pgx_decoder

const FFCodec ff_pgx_decoder

Initial value:

= {
    .p.name         = "pgx",
    CODEC_LONG_NAME("PGX (JPEG2000 Test Format)"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_PGX,
    .p.capabilities = AV_CODEC_CAP_DR1,
    FF_CODEC_DECODE_CB(pgx_decode_frame),
}

Definition at line 153 of file pgxdec.c.