hnm4video.c File Reference

#include <string.h>
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"

Go to the source code of this file.

Data Structures
struct	Hnm4VideoContext

Macros
#define	HNM4_CHUNK_ID_PL   19536
#define	HNM4_CHUNK_ID_IZ   23113
#define	HNM4_CHUNK_ID_IU   21833
#define	HNM4_CHUNK_ID_SD   17491

Functions
static int	getbit (GetByteContext *gb, uint32_t *bitbuf, int *bits)
static void	unpack_intraframe (AVCodecContext *avctx, const uint8_t *src, uint32_t size)
static void	postprocess_current_frame (AVCodecContext *avctx)
static void	copy_processed_frame (AVCodecContext *avctx, AVFrame *frame)
static int	decode_interframe_v4 (AVCodecContext *avctx, const uint8_t *src, uint32_t size)
static void	decode_interframe_v4a (AVCodecContext *avctx, const uint8_t *src, uint32_t size)
static void	hnm_update_palette (AVCodecContext *avctx, const uint8_t *src, uint32_t size)
static int	hnm_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
static av_cold int	hnm_decode_init (AVCodecContext *avctx)
static av_cold int	hnm_decode_end (AVCodecContext *avctx)

Variables
const FFCodec	ff_hnm4_video_decoder

Macro Definition Documentation

HNM4_CHUNK_ID_PL

#define HNM4_CHUNK_ID_PL   19536

Definition at line 34 of file hnm4video.c.

HNM4_CHUNK_ID_IZ

#define HNM4_CHUNK_ID_IZ   23113

Definition at line 35 of file hnm4video.c.

HNM4_CHUNK_ID_IU

#define HNM4_CHUNK_ID_IU   21833

Definition at line 36 of file hnm4video.c.

HNM4_CHUNK_ID_SD

#define HNM4_CHUNK_ID_SD   17491

Definition at line 37 of file hnm4video.c.

Function Documentation

getbit()

static int getbit ( GetByteContext *  gb, uint32_t *  bitbuf, int *  bits  )

static

Definition at line 51 of file hnm4video.c.

Referenced by unpack_intraframe().

unpack_intraframe()

static void unpack_intraframe ( AVCodecContext *  avctx, const uint8_t *  src, uint32_t  size  )

static

Definition at line 67 of file hnm4video.c.

Referenced by hnm_decode_frame().

postprocess_current_frame()

static void postprocess_current_frame ( AVCodecContext *  avctx )

static

Definition at line 118 of file hnm4video.c.

Referenced by hnm_decode_frame().

copy_processed_frame()

static void copy_processed_frame ( AVCodecContext *  avctx, AVFrame *  frame  )

static

Definition at line 136 of file hnm4video.c.

Referenced by hnm_decode_frame().

decode_interframe_v4()

static int decode_interframe_v4 ( AVCodecContext *  avctx, const uint8_t *  src, uint32_t  size  )

static

Definition at line 150 of file hnm4video.c.

Referenced by hnm_decode_frame().

decode_interframe_v4a()

static void decode_interframe_v4a ( AVCodecContext *  avctx, const uint8_t *  src, uint32_t  size  )

static

Definition at line 279 of file hnm4video.c.

Referenced by hnm_decode_frame().

hnm_update_palette()

static void hnm_update_palette ( AVCodecContext *  avctx, const uint8_t *  src, uint32_t  size  )

static

Definition at line 358 of file hnm4video.c.

Referenced by hnm_decode_frame().

hnm_decode_frame()

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

static

Definition at line 391 of file hnm4video.c.

hnm_decode_init()

static av_cold int hnm_decode_init ( AVCodecContext *  avctx )

static

Definition at line 453 of file hnm4video.c.

hnm_decode_end()

static av_cold int hnm_decode_end ( AVCodecContext *  avctx )

static

Definition at line 489 of file hnm4video.c.

Variable Documentation

ff_hnm4_video_decoder

const FFCodec ff_hnm4_video_decoder

Initial value:

= {
    .p.name         = "hnm4video",
    CODEC_LONG_NAME("HNM 4 video"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_HNM4_VIDEO,
    .priv_data_size = sizeof(Hnm4VideoContext),
    .init           = hnm_decode_init,
    .close          = hnm_decode_end,
    FF_CODEC_DECODE_CB(hnm_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 500 of file hnm4video.c.