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

Enumerations
enum	CFHDParam {   ChannelCount = 12, SubbandCount = 14, ImageWidth = 20, ImageHeight = 21,   LowpassPrecision = 35, SubbandNumber = 48, Quantization = 53, ChannelNumber = 62,   SampleFlags = 68, BitsPerComponent = 101, ChannelWidth = 104, ChannelHeight = 105,   PrescaleShift = 109 }

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 (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	filter (int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, int clip)
static void	interlaced_vertical_filter (int16_t *output, int16_t *low, int16_t *high, int width, int linesize, int plane)
static void	horiz_filter (int16_t *output, int16_t *low, int16_t *high, int width)
static void	horiz_filter_clip (int16_t *output, int16_t *low, int16_t *high, int width, int clip)
static void	vert_filter (int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len)
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
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.

Enumeration Type Documentation

CFHDParam

enum CFHDParam

Enumerator
ChannelCount
SubbandCount
ImageWidth
ImageHeight
LowpassPrecision
SubbandNumber
Quantization
ChannelNumber
SampleFlags
BitsPerComponent
ChannelWidth
ChannelHeight
PrescaleShift

Definition at line 43 of file cfhd.c.

Function Documentation

cfhd_init()

static av_cold int cfhd_init ( AVCodecContext *  avctx )

static

Definition at line 61 of file cfhd.c.

init_plane_defaults()

static void init_plane_defaults ( CFHDContext *  s )

static

Definition at line 71 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 78 of file cfhd.c.

Referenced by init_frame_defaults().

init_frame_defaults()

static void init_frame_defaults ( CFHDContext *  s )

static

Definition at line 85 of file cfhd.c.

Referenced by cfhd_decode().

dequant_and_decompand()

static int dequant_and_decompand ( int  level, int  quantisation, int  codebook  )

inlinestatic

Definition at line 106 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 131 of file cfhd.c.

Referenced by cfhd_decode().

process_alpha()

static void process_alpha ( int16_t *  alpha, int  width  )

inlinestatic

Definition at line 139 of file cfhd.c.

Referenced by cfhd_decode().

filter()

static void filter ( int16_t *  output, ptrdiff_t  out_stride, int16_t *  low, ptrdiff_t  low_stride, int16_t *  high, ptrdiff_t  high_stride, int  len, int  clip  )

inlinestatic

Definition at line 153 of file cfhd.c.

Referenced by horiz_filter(), horiz_filter_clip(), and vert_filter().

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 196 of file cfhd.c.

Referenced by cfhd_decode().

horiz_filter()

static void horiz_filter ( int16_t *  output, int16_t *  low, int16_t *  high, int  width  )

static

Definition at line 208 of file cfhd.c.

Referenced by cfhd_decode().

horiz_filter_clip()

static void horiz_filter_clip ( int16_t *  output, int16_t *  low, int16_t *  high, int  width, int  clip  )

static

Definition at line 214 of file cfhd.c.

Referenced by cfhd_decode().

vert_filter()

static void vert_filter ( int16_t *  output, ptrdiff_t  out_stride, int16_t *  low, ptrdiff_t  low_stride, int16_t *  high, ptrdiff_t  high_stride, int  len  )

static

Definition at line 220 of file cfhd.c.

Referenced by cfhd_decode().

free_buffers()

static void free_buffers ( CFHDContext *  s )

static

Definition at line 227 of file cfhd.c.

Referenced by cfhd_close(), and cfhd_decode().

alloc_buffers()

static int alloc_buffers ( AVCodecContext *  avctx )

static

Definition at line 245 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 323 of file cfhd.c.

cfhd_close()

static av_cold int cfhd_close ( AVCodecContext *  avctx )

static

Definition at line 947 of file cfhd.c.

Variable Documentation

ff_cfhd_decoder

AVCodec ff_cfhd_decoder

Initial value:

= {
    .name             = "cfhd",
    .long_name        = NULL_IF_CONFIG_SMALL("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,
    .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 961 of file cfhd.c.