utvideoenc.c File Reference

Ut Video encoder. More...

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "bswapdsp.h"
#include "bytestream.h"
#include "lossless_videoencdsp.h"
#include "put_bits.h"
#include "utvideo.h"
#include "huffman.h"

Go to the source code of this file.

Data Structures
struct	UtvideoContext
struct	HuffEntry

Macros
#define	OFFSET(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, const 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, const 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 FFCodec	ff_utvideo_encoder

Detailed Description

Ut Video encoder.

Definition in file utvideoenc.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(UtvideoContext, x)

Definition at line 642 of file utvideoenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 643 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 66 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 73 of file utvideoenc.c.

Referenced by calculate_codes().

utvideo_encode_close()

static av_cold int utvideo_encode_close ( AVCodecContext * avctx )

static

Definition at line 79 of file utvideoenc.c.

utvideo_encode_init()

static av_cold int utvideo_encode_init ( AVCodecContext * avctx )

static

Definition at line 91 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 250 of file utvideoenc.c.

Referenced by utvideo_encode_frame().

median_predict()

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

static

Definition at line 295 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 329 of file utvideoenc.c.

Referenced by encode_plane().

calculate_codes()

static void calculate_codes ( HuffEntry * he )

static

Definition at line 343 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 364 of file utvideoenc.c.

Referenced by encode_plane().

encode_plane()

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

static

Definition at line 394 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 535 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, .unit = "pred" },
    { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_NONE }, INT_MIN, INT_MAX, VE, .unit = "pred" },
    { "left",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_LEFT }, INT_MIN, INT_MAX, VE, .unit = "pred" },
    { "median",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRED_MEDIAN }, INT_MIN, INT_MAX, VE, .unit = "pred" },
 
    { NULL},
}

Definition at line 644 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 653 of file utvideoenc.c.

ff_utvideo_encoder

const FFCodec ff_utvideo_encoder

Initial value:

= {
    .p.name         = "utvideo",
    CODEC_LONG_NAME("Ut Video"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_UTVIDEO,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
                      AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .priv_data_size = sizeof(UtvideoContext),
    .p.priv_class   = &utvideo_class,
    .init           = utvideo_encode_init,
    FF_CODEC_ENCODE_CB(utvideo_encode_frame),
    .close          = utvideo_encode_close,
    CODEC_PIXFMTS(AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
                  AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P),
    .color_ranges   = AVCOL_RANGE_MPEG,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 660 of file utvideoenc.c.