cfhd.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/buffer.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.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, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	cfhd_close (AVCodecContext *avctx)

Variables
const AVCodec	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 40 of file cfhd.c.

ALPHA_COMPAND_GAIN

#define ALPHA_COMPAND_GAIN   9400

Definition at line 41 of file cfhd.c.

Function Documentation

cfhd_init()

static av_cold int cfhd_init ( AVCodecContext *  avctx )

static

Definition at line 43 of file cfhd.c.

init_plane_defaults()

static void init_plane_defaults ( CFHDContext *  s )

static

Definition at line 73 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 80 of file cfhd.c.

Referenced by init_frame_defaults().

init_frame_defaults()

static void init_frame_defaults ( CFHDContext *  s )

static

Definition at line 87 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 109 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 117 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 137 of file cfhd.c.

Referenced by cfhd_decode().

process_bayer()

static void process_bayer ( AVFrame *  frame, int  bpc  )

inlinestatic

Definition at line 151 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 195 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 208 of file cfhd.c.

Referenced by cfhd_decode().

free_buffers()

static void free_buffers ( CFHDContext *  s )

static

Definition at line 219 of file cfhd.c.

Referenced by cfhd_close(), and cfhd_decode().

alloc_buffers()

static int alloc_buffers ( AVCodecContext *  avctx )

static

Definition at line 246 of file cfhd.c.

Referenced by cfhd_decode().

cfhd_decode()

static int cfhd_decode ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 375 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 AVCodec ff_cfhd_decoder

Initial value:

= {
    .name             = "cfhd",
    .long_name        = NULL_IF_CONFIG_SMALL("GoPro CineForm HD"),
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_CFHD,
    .priv_data_size   = sizeof(CFHDContext),
    .init             = cfhd_init,
    .close            = cfhd_close,
    .decode           = cfhd_decode,
    .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
    .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .caps_internal    = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 1461 of file cfhd.c.