utvideoenc.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
#include "bswapdsp.h"
#include "bytestream.h"
#include "put_bits.h"
#include "mathops.h"
#include "utvideo.h"
#include "huffman.h"

Go to the source code of this file.

Data Structures
struct	HuffEntry

Macros
#define	OFFSET(x)   offsetof(UtvideoContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static int	ut_huff_cmp_len (const void *a, const void *b)
static int	huff_cmp_sym (const void *a, const void *b)
static av_cold int	utvideo_encode_close (AVCodecContext *avctx)
static av_cold int	utvideo_encode_init (AVCodecContext *avctx)
static void	mangle_rgb_planes (uint8_t *dst[4], ptrdiff_t dst_stride, uint8_t *const src[4], int planes, const int stride[4], int width, int height)
static void	median_predict (UtvideoContext *c, uint8_t *src, uint8_t *dst, ptrdiff_t stride, int width, int height)
static void	count_usage (uint8_t *src, int width, int height, uint64_t *counts)
static void	calculate_codes (HuffEntry *he)
static int	write_huff_codes (uint8_t *src, uint8_t *dst, int dst_size, int width, int height, HuffEntry *he)
static int	encode_plane (AVCodecContext *avctx, uint8_t *src, uint8_t *dst, ptrdiff_t stride, int plane_no, int width, int height, PutByteContext *pb)
static int	utvideo_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic, int *got_packet)

Variables
static const AVOption	options []
static const AVClass	utvideo_class
const AVCodec	ff_utvideo_encoder

Detailed Description

Ut Video encoder

Definition in file utvideoenc.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(UtvideoContext, x)

Definition at line 627 of file utvideoenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 628 of file utvideoenc.c.

Function Documentation

ut_huff_cmp_len()

static int ut_huff_cmp_len ( const void *  a, const void *  b  )

static

Definition at line 48 of file utvideoenc.c.

Referenced by calculate_codes().

huff_cmp_sym()

static int huff_cmp_sym ( const void *  a, const void *  b  )

static

Definition at line 55 of file utvideoenc.c.

Referenced by calculate_codes().

utvideo_encode_close()

static av_cold int utvideo_encode_close ( AVCodecContext *  avctx )

static

Definition at line 61 of file utvideoenc.c.

utvideo_encode_init()

static av_cold int utvideo_encode_init ( AVCodecContext *  avctx )

static

Definition at line 73 of file utvideoenc.c.

mangle_rgb_planes()

static void mangle_rgb_planes ( uint8_t *  dst[4], ptrdiff_t  dst_stride, uint8_t *const  src[4], int  planes, const int  stride[4], int  width, int  height  )

static

Definition at line 235 of file utvideoenc.c.

Referenced by utvideo_encode_frame().

median_predict()

static void median_predict ( UtvideoContext *  c, uint8_t *  src, uint8_t *  dst, ptrdiff_t  stride, int  width, int  height  )

static

Definition at line 280 of file utvideoenc.c.

Referenced by encode_plane().

count_usage()

static void count_usage ( uint8_t *  src, int  width, int  height, uint64_t *  counts  )

static

Definition at line 314 of file utvideoenc.c.

Referenced by encode_plane().

calculate_codes()

static void calculate_codes ( HuffEntry *  he )

static

Definition at line 328 of file utvideoenc.c.

Referenced by encode_plane().

write_huff_codes()

static int write_huff_codes ( uint8_t *  src, uint8_t *  dst, int  dst_size, int  width, int  height, HuffEntry *  he  )

static

Definition at line 349 of file utvideoenc.c.

Referenced by encode_plane().

encode_plane()

static int encode_plane ( AVCodecContext *  avctx, uint8_t *  src, uint8_t *  dst, ptrdiff_t  stride, int  plane_no, int  width, int  height, PutByteContext *  pb  )

static

Definition at line 379 of file utvideoenc.c.

Referenced by utvideo_encode_frame().

utvideo_encode_frame()

static int utvideo_encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  pic, int *  got_packet  )

static

Definition at line 520 of file utvideoenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
{ "pred", "Prediction method", OFFSET(frame_pred), AV_OPT_TYPE_INT, { .i64 = PRED_LEFT }, PRED_NONE, PRED_MEDIAN, VE, "pred" },
    { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_NONE }, INT_MIN, INT_MAX, VE, "pred" },
    { "left",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_LEFT }, INT_MIN, INT_MAX, VE, "pred" },
    { "gradient", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_GRADIENT }, INT_MIN, INT_MAX, VE, "pred" },
    { "median",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_MEDIAN }, INT_MIN, INT_MAX, VE, "pred" },
 
    { NULL},
}

Definition at line 629 of file utvideoenc.c.

utvideo_class

const AVClass utvideo_class

static

Initial value:

= {
    .class_name = "utvideo",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 639 of file utvideoenc.c.

ff_utvideo_encoder

const AVCodec ff_utvideo_encoder

Initial value:

= {
    .name           = "utvideo",
    .long_name      = NULL_IF_CONFIG_SMALL("Ut Video"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_UTVIDEO,
    .priv_data_size = sizeof(UtvideoContext),
    .priv_class     = &utvideo_class,
    .init           = utvideo_encode_init,
    .encode2        = utvideo_encode_frame,
    .close          = utvideo_encode_close,
    .capabilities   = AV_CODEC_CAP_FRAME_THREADS,
    .pix_fmts       = (const enum AVPixelFormat[]) {
                          AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_YUV422P,
                          AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE
                      },
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 646 of file utvideoenc.c.