svq1enc.c File Reference

Sorenson Vector Quantizer #1 (SVQ1) video codec. More...

#include "avcodec.h"
#include "hpeldsp.h"
#include "me_cmp.h"
#include "mpegvideo.h"
#include "h263.h"
#include "internal.h"
#include "mpegutils.h"
#include "svq1.h"
#include "svq1enc.h"
#include "svq1enc_cb.h"
#include "libavutil/avassert.h"

Go to the source code of this file.

Macros
#define	QUALITY_THRESHOLD   100
#define	THRESHOLD_MULTIPLIER   0.6
#define	OFFSET(x)   offsetof(struct SVQ1EncContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static void	svq1_write_header (SVQ1EncContext *s, int frame_type)
static int	ssd_int8_vs_int16_c (const int8_t *pix1, const int16_t *pix2, intptr_t size)
static int	encode_block (SVQ1EncContext *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, int level, int threshold, int lambda, int intra)
static void	init_block_index (MpegEncContext *s)
static int	svq1_encode_plane (SVQ1EncContext *s, int plane, unsigned char *src_plane, unsigned char *ref_plane, unsigned char *decoded_plane, int width, int height, int src_stride, int stride)
static av_cold int	svq1_encode_end (AVCodecContext *avctx)
static av_cold int	svq1_encode_init (AVCodecContext *avctx)
static int	svq1_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)

Variables
static const AVOption	options []
static const AVClass	svq1enc_class
AVCodec	ff_svq1_encoder

Detailed Description

Sorenson Vector Quantizer #1 (SVQ1) video codec.

For more information of the SVQ1 algorithm, visit: http://www.pcisys.net/~melanson/codecs/

Definition in file svq1enc.c.

Macro Definition Documentation

#define QUALITY_THRESHOLD   100

Definition at line 76 of file svq1enc.c.

Referenced by svq1_encode_plane().

#define THRESHOLD_MULTIPLIER   0.6

Definition at line 77 of file svq1enc.c.

Referenced by svq1_encode_plane().

#define OFFSET

(

x

)

offsetof(struct SVQ1EncContext, x)

Definition at line 676 of file svq1enc.c.

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 677 of file svq1enc.c.

Function Documentation

static void svq1_write_header ( SVQ1EncContext *  s, int  frame_type  )

static

Definition at line 42 of file svq1enc.c.

Referenced by svq1_encode_frame().

static int ssd_int8_vs_int16_c ( const int8_t *  pix1, const int16_t *  pix2, intptr_t  size  )

static

Definition at line 79 of file svq1enc.c.

Referenced by svq1_encode_init().

static int encode_block ( SVQ1EncContext *  s, uint8_t *  src, uint8_t *  ref, uint8_t *  decoded, int  stride, int  level, int  threshold, int  lambda, int  intra  )

static

Definition at line 89 of file svq1enc.c.

Referenced by svq1_encode_plane().

static void init_block_index ( MpegEncContext *  s )

static

Definition at line 237 of file svq1enc.c.

Referenced by svq1_encode_plane().

static int svq1_encode_plane ( SVQ1EncContext *  s, int  plane, unsigned char *  src_plane, unsigned char *  ref_plane, unsigned char *  decoded_plane, int  width, int  height, int  src_stride, int  stride  )

static

Definition at line 246 of file svq1enc.c.

Referenced by svq1_encode_frame().

static av_cold int svq1_encode_end ( AVCodecContext *  avctx )

static

Definition at line 497 of file svq1enc.c.

Referenced by svq1_encode_init().

static av_cold int svq1_encode_init ( AVCodecContext *  avctx )

static

Definition at line 527 of file svq1enc.c.

static int svq1_encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  pict, int *  got_packet  )

static

Definition at line 593 of file svq1enc.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "motion-est", "Motion estimation algorithm", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, VE, "motion-est"},
        { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
        { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
        { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },

    { NULL },
}

Definition at line 678 of file svq1enc.c.

const AVClass svq1enc_class

static

Initial value:

= {
    .class_name = "svq1enc",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 687 of file svq1enc.c.

AVCodec ff_svq1_encoder

Initial value:

= {
    .name           = "svq1",
    .long_name      = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_SVQ1,
    .priv_data_size = sizeof(SVQ1EncContext),
    .priv_class     = &svq1enc_class,
    .init           = svq1_encode_init,
    .encode2        = svq1_encode_frame,
    .close          = svq1_encode_end,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
                                                     AV_PIX_FMT_NONE },
}

Definition at line 694 of file svq1enc.c.