cfhd.c File Reference

Cineform HD video decoder. More...

#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "internal.h"
#include "thread.h"
#include "cfhd.h"

Go to the source code of this file.

Macros
#define	ALPHA_COMPAND_DC_OFFSET   256
#define	ALPHA_COMPAND_GAIN   9400

Functions
static av_cold int	cfhd_init (AVCodecContext *avctx)
static void	init_plane_defaults (CFHDContext *s)
static void	init_peak_table_defaults (CFHDContext *s)
static void	init_frame_defaults (CFHDContext *s)
static int	dequant_and_decompand (CFHDContext *s, int level, int quantisation, int codebook)
static void	difference_coding (int16_t *band, int width, int height)
static void	peak_table (int16_t *band, Peak *peak, int length)
static void	process_alpha (int16_t *alpha, int width)
static void	process_bayer (AVFrame *frame, int bpc)
static void	interlaced_vertical_filter (int16_t *output, int16_t *low, int16_t *high, int width, int linesize, int plane)
static void	inverse_temporal_filter (int16_t *low, int16_t *high, int width)
static void	free_buffers (CFHDContext *s)
static int	alloc_buffers (AVCodecContext *avctx)
static int	cfhd_decode (AVCodecContext *avctx, AVFrame *pic, int *got_frame, AVPacket *avpkt)
static av_cold int	cfhd_close (AVCodecContext *avctx)

Variables
const FFCodec	ff_cfhd_decoder

Detailed Description

Cineform HD video decoder.

Definition in file cfhd.c.

Macro Definition Documentation

ALPHA_COMPAND_DC_OFFSET

#define ALPHA_COMPAND_DC_OFFSET   256

Definition at line 42 of file cfhd.c.

Referenced by process_alpha().

ALPHA_COMPAND_GAIN

#define ALPHA_COMPAND_GAIN   9400

Definition at line 43 of file cfhd.c.

Referenced by process_alpha().

Function Documentation

cfhd_init()

static av_cold int cfhd_init ( AVCodecContext * avctx )

static

Definition at line 45 of file cfhd.c.

init_plane_defaults()

static void init_plane_defaults ( CFHDContext * s )

static

Definition at line 75 of file cfhd.c.

Referenced by cfhd_decode(), and init_frame_defaults().

init_peak_table_defaults()

static void init_peak_table_defaults ( CFHDContext * s )

static

Definition at line 82 of file cfhd.c.

Referenced by init_frame_defaults().

init_frame_defaults()

static void init_frame_defaults ( CFHDContext * s )

static

Definition at line 89 of file cfhd.c.

Referenced by cfhd_decode().

dequant_and_decompand()

static int dequant_and_decompand ( CFHDContext * s, int level, int quantisation, int codebook )

inlinestatic

Definition at line 111 of file cfhd.c.

Referenced by cfhd_decode().

difference_coding()

static void difference_coding ( int16_t * band, int width, int height )

inlinestatic

Definition at line 119 of file cfhd.c.

Referenced by cfhd_decode().

peak_table()

static void peak_table ( int16_t * band, Peak * peak, int length )

inlinestatic

Definition at line 129 of file cfhd.c.

Referenced by cfhd_decode().

process_alpha()

static void process_alpha ( int16_t * alpha, int width )

inlinestatic

Definition at line 136 of file cfhd.c.

Referenced by cfhd_decode().

process_bayer()

static void process_bayer ( AVFrame * frame, int bpc )

inlinestatic

Definition at line 149 of file cfhd.c.

Referenced by cfhd_decode().

interlaced_vertical_filter()

static void interlaced_vertical_filter ( int16_t * output, int16_t * low, int16_t * high, int width, int linesize, int plane )

inlinestatic

Definition at line 193 of file cfhd.c.

Referenced by cfhd_decode().

inverse_temporal_filter()

static void inverse_temporal_filter ( int16_t * low, int16_t * high, int width )

inlinestatic

Definition at line 204 of file cfhd.c.

Referenced by cfhd_decode().

free_buffers()

static void free_buffers ( CFHDContext * s )

static

Definition at line 215 of file cfhd.c.

Referenced by cfhd_close(), and cfhd_decode().

alloc_buffers()

static int alloc_buffers ( AVCodecContext * avctx )

static

Definition at line 240 of file cfhd.c.

Referenced by cfhd_decode().

cfhd_decode()

static int cfhd_decode ( AVCodecContext * avctx, AVFrame * pic, int * got_frame, AVPacket * avpkt )

static

Definition at line 371 of file cfhd.c.

cfhd_close()

static av_cold int cfhd_close ( AVCodecContext * avctx )

static

Definition at line 1404 of file cfhd.c.

Variable Documentation

ff_cfhd_decoder

const FFCodec ff_cfhd_decoder

Initial value:

= {
    .p.name           = "cfhd",
    CODEC_LONG_NAME("GoPro CineForm HD"),
    .p.type           = AVMEDIA_TYPE_VIDEO,
    .p.id             = AV_CODEC_ID_CFHD,
    .priv_data_size   = sizeof(CFHDContext),
    .init             = cfhd_init,
    .close            = cfhd_close,
    FF_CODEC_DECODE_CB(cfhd_decode),
    UPDATE_THREAD_CONTEXT(update_thread_context),
    .p.capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal    = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 1458 of file cfhd.c.