svq1enc.c File Reference

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

#include "libavutil/emms.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "hpeldsp.h"
#include "me_cmp.h"
#include "mpegvideo.h"
#include "h263.h"
#include "h263enc.h"
#include "internal.h"
#include "mpegutils.h"
#include "put_bits.h"
#include "svq1.h"
#include "svq1encdsp.h"
#include "svq1enc_cb.h"
#include "version.h"
#include "libavutil/avassert.h"
#include "libavutil/frame.h"
#include "libavutil/mem_internal.h"

Go to the source code of this file.

Data Structures
struct	SVQ1EncContext

Macros
#define	QUALITY_THRESHOLD   100
#define	THRESHOLD_MULTIPLIER   0.6
#define	OFFSET(x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static void	svq1_write_header (SVQ1EncContext *s, PutBitContext *pb, int frame_type)
static int	encode_block (SVQ1EncContext *s, uint8_t *src, uint8_t *ref, uint8_t *decoded, int stride, unsigned level, int threshold, int lambda, int intra)
static void	init_block_index (MpegEncContext *const s)
static int	svq1_encode_plane (SVQ1EncContext *s, int plane, PutBitContext *pb, const 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	write_ident (AVCodecContext *avctx, const char *ident)
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
const FFCodec	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

QUALITY_THRESHOLD

#define QUALITY_THRESHOLD   100

Definition at line 124 of file svq1enc.c.

Referenced by svq1_encode_plane().

THRESHOLD_MULTIPLIER

#define THRESHOLD_MULTIPLIER   0.6

Definition at line 125 of file svq1enc.c.

Referenced by svq1_encode_plane().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(struct SVQ1EncContext, x)

Definition at line 675 of file svq1enc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 676 of file svq1enc.c.

Function Documentation

svq1_write_header()

static void svq1_write_header ( SVQ1EncContext * s, PutBitContext * pb, int frame_type )

static

Definition at line 90 of file svq1enc.c.

Referenced by svq1_encode_frame().

encode_block()

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

static

Definition at line 127 of file svq1enc.c.

Referenced by encode_block(), and svq1_encode_plane().

init_block_index()

static void init_block_index ( MpegEncContext *const s )

static

Definition at line 282 of file svq1enc.c.

Referenced by svq1_encode_plane().

svq1_encode_plane()

static int svq1_encode_plane ( SVQ1EncContext * s, int plane, PutBitContext * pb, const 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 290 of file svq1enc.c.

Referenced by svq1_encode_frame().

svq1_encode_end()

static av_cold int svq1_encode_end ( AVCodecContext * avctx )

static

Definition at line 508 of file svq1enc.c.

write_ident()

static av_cold int write_ident ( AVCodecContext * avctx, const char * ident )

static

Definition at line 535 of file svq1enc.c.

Referenced by svq1_encode_init().

svq1_encode_init()

static av_cold int svq1_encode_init ( AVCodecContext * avctx )

static

Definition at line 548 of file svq1enc.c.

svq1_encode_frame()

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

static

Definition at line 623 of file svq1enc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

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

Definition at line 677 of file svq1enc.c.

svq1enc_class

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 686 of file svq1enc.c.

ff_svq1_encoder

const FFCodec ff_svq1_encoder

Initial value:

= {
    .p.name         = "svq1",
    CODEC_LONG_NAME("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_SVQ1,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .priv_data_size = sizeof(SVQ1EncContext),
    .p.priv_class   = &svq1enc_class,
    .init           = svq1_encode_init,
    FF_CODEC_ENCODE_CB(svq1_encode_frame),
    .close          = svq1_encode_end,
    CODEC_PIXFMTS(AV_PIX_FMT_YUV410P),
    .color_ranges   = AVCOL_RANGE_MPEG,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 693 of file svq1enc.c.