## OGMRipLavc

OGMRipLavc — Base class for lavc video codecs

## Synopsis

    #include <ogmrip-lavc.h>

    struct              OGMRipLavc;
    struct              OGMRipLavcClass;
    enum                OGMRipLavcHeaderType;
    void                ogmrip_init_lavc_plugin             (void);
    void                ogmrip_lavc_set_cmp                 (OGMRipLavc *lavc,
                                                             guint cmp,
                                                             guint precmp,
                                                             guint subcmp);
    void                ogmrip_lavc_get_cmp                 (OGMRipLavc *lavc,
                                                             guint *cmp,
                                                             guint *precmp,
                                                             guint *subcmp);
    void                ogmrip_lavc_set_dia                 (OGMRipLavc *lavc,
                                                             gint dia,
                                                             gint predia);
    void                ogmrip_lavc_get_dia                 (OGMRipLavc *lavc,
                                                             gint *dia,
                                                             gint *predia);
    void                ogmrip_lavc_set_header              (OGMRipLavc *lavc,
                                                             OGMRipLavcHeaderType header);
    gint                ogmrip_lavc_get_header              (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_buf_size            (OGMRipLavc *lavc,
                                                             guint buf_size);
    gint                ogmrip_lavc_get_buf_size            (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_dc                  (OGMRipLavc *lavc,
                                                             guint dc);
    gint                ogmrip_lavc_get_dc                  (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_keyint              (OGMRipLavc *lavc,
                                                             guint keyint);
    gint                ogmrip_lavc_get_keyint              (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_last_pred           (OGMRipLavc *lavc,
                                                             guint last_pred);
    gint                ogmrip_lavc_get_last_pred           (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_max_rate            (OGMRipLavc *lavc,
                                                             guint max_rate);
    gint                ogmrip_lavc_get_max_rate            (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_mbd                 (OGMRipLavc *lavc,
                                                             guint mbd);
    gint                ogmrip_lavc_get_mbd                 (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_min_rate            (OGMRipLavc *lavc,
                                                             guint min_rate);
    gint                ogmrip_lavc_get_min_rate            (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_mv0                 (OGMRipLavc *lavc,
                                                             gboolean mv0);
    gboolean            ogmrip_lavc_get_mv0                 (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_preme               (OGMRipLavc *lavc,
                                                             guint preme);
    gint                ogmrip_lavc_get_preme               (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_qns                 (OGMRipLavc *lavc,
                                                             guint qns);
    gint                ogmrip_lavc_get_qns                 (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_strict              (OGMRipLavc *lavc,
                                                             guint strict);
    gint                ogmrip_lavc_get_strict              (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_vb_strategy         (OGMRipLavc *lavc,
                                                             guint vb_strategy);
    gint                ogmrip_lavc_get_vb_strategy         (OGMRipLavc *lavc);
    void                ogmrip_lavc_set_vqcomp              (OGMRipLavc *lavc,
                                                             gdouble vqcomp);
    gdouble             ogmrip_lavc_get_vqcomp              (OGMRipLavc *lavc);

## Description

## Details

### struct OGMRipLavc

    struct OGMRipLavc {
      OGMRipVideoCodec parent_instance;

      OGMRipLavcPriv *priv;
    };

### struct OGMRipLavcClass

    struct OGMRipLavcClass {
      OGMRipVideoCodecClass parent_class;

      /* vtable */
      const gchar * (* get_codec) (void);
    };

### enum OGMRipLavcHeaderType

    typedef enum {
      OGMRIP_LAVC_HEADER_AUTO,
      OGMRIP_LAVC_HEADER_EXTRADATA,
      OGMRIP_LAVC_HEADER_KEYFRAMES,
      OGMRIP_LAVC_HEADER_COMBINE
    } OGMRipLavcHeaderType;

Controls writing global video headers.

`OGMRIP_LAVC_HEADER_AUTO` | Codec decides where to write global headers.
`OGMRIP_LAVC_HEADER_EXTRADATA` | Write global headers only in extradata.
`OGMRIP_LAVC_HEADER_KEYFRAMES` | Write global headers only in front of keyframes.
`OGMRIP_LAVC_HEADER_COMBINE` | Combine `OGMRIP_LAVC_HEADER_EXTRADATA` and `OGMRIP_LAVC_HEADER_KEYFRAMES`.

### ogmrip_init_lavc_plugin ()

    void                ogmrip_init_lavc_plugin             (void);

Initialises the LAVC plugin. This function should be called when initialising a plugin of the LAVC family.

### ogmrip_lavc_set_cmp ()

    void                ogmrip_lavc_set_cmp                 (OGMRipLavc *lavc,
                                                             guint cmp,
                                                             guint precmp,
                                                             guint subcmp);

Sets the comparison function for full pel, pre pass and sub pel motion estimation

`lavc` : | An OGMRipLavc
`cmp` : | The comparison function for full pel motion estimation
`precmp` : | The comparison function for motion estimation pre pass
`subcmp` : | The comparison function for sub pel motion estimation

### ogmrip_lavc_get_cmp ()

    void                ogmrip_lavc_get_cmp                 (OGMRipLavc *lavc,
                                                             guint *cmp,
                                                             guint *precmp,
                                                             guint *subcmp);

Gets the comparison function for full pel, pre pass and sub pel motion estimation

`lavc` : | An OGMRipLavc
`cmp` : | A pointer to store the comparison function for full pel motion estimation
`precmp` : | A pointer to store the comparison function for motion estimation pre pass
`subcmp` : | A pointer to store the comparison function for sub pel motion estimation

### ogmrip_lavc_set_dia ()

    void                ogmrip_lavc_set_dia                 (OGMRipLavc *lavc,
                                                             gint dia,
                                                             gint predia);

Sets the diamond type and size for full pel and pre pass motion estimation

`lavc` : | An OGMRipLavc
`dia` : | The diamond type and size for full pel motion estimation
`predia` : | The diamond type and size for motion estimation pre-pass

### ogmrip_lavc_get_dia ()

    void                ogmrip_lavc_get_dia                 (OGMRipLavc *lavc,
                                                             gint *dia,
                                                             gint *predia);

Gets the diamond type and size for full pel and pre pass motion estimation

`lavc` : | An OGMRipLavc
`dia` : | A pointer to store the diamond type and size for full pel motion estimation
`predia` : | A pointer to store the diamond type and size for motion estimation pre-pass

### ogmrip_lavc_set_header ()

    void                ogmrip_lavc_set_header              (OGMRipLavc *lavc,
                                                             OGMRipLavcHeaderType header);

Sets the global video header type.

`lavc` : | An OGMRipLavc
`header` : | The OGMRipLavcHeaderType

### ogmrip_lavc_get_header ()

    gint                ogmrip_lavc_get_header              (OGMRipLavc *lavc);

Gets the global video header type.

`lavc` : | An OGMRipLavc
Returns : | The current OGMRipLavcHeaderType, or -1

### ogmrip_lavc_set_buf_size ()

    void                ogmrip_lavc_set_buf_size            (OGMRipLavc *lavc,
                                                             guint buf_size);

Sets the buffer size in kb

`lavc` : | An OGMRipLavc
`buf_size` : | A buffer size

### ogmrip_lavc_get_buf_size ()

    gint                ogmrip_lavc_get_buf_size            (OGMRipLavc *lavc);

Gets the buffer size in kb

`lavc` : | An OGMRipLavc
Returns : | The buffer size, or -1

### ogmrip_lavc_set_dc ()

    void                ogmrip_lavc_set_dc                  (OGMRipLavc *lavc,
                                                             guint dc);

Sets the intra DC precision in bits

`lavc` : | An OGMRipLavc
`dc` : | A precision

### ogmrip_lavc_get_dc ()

    gint                ogmrip_lavc_get_dc                  (OGMRipLavc *lavc);

Gets the intra DC precision in bits

`lavc` : | An OGMRipLavc
Returns : | The precision, or -1

### ogmrip_lavc_set_keyint ()

    void                ogmrip_lavc_set_keyint              (OGMRipLavc *lavc,
                                                             guint keyint);

Sets the maximum interval between key frames

`lavc` : | An OGMRipLavc
`keyint` : | An intervale

### ogmrip_lavc_get_keyint ()

    gint                ogmrip_lavc_get_keyint              (OGMRipLavc *lavc);

Gets the maximum interval between key frames

`lavc` : | An OGMRipLavc
Returns : | The interval, or -1

### ogmrip_lavc_set_last_pred ()

    void                ogmrip_lavc_set_last_pred           (OGMRipLavc *lavc,
                                                             guint last_pred);

Sets the amount of motion predictors from the previous frame

`lavc` : | An OGMRipLavc
`last_pred` : | The last_pred

### ogmrip_lavc_get_last_pred ()

    gint                ogmrip_lavc_get_last_pred           (OGMRipLavc *lavc);

Gets the amount of motion predictors from the previous frame

`lavc` : | An OGMRipLavc
Returns : | The amount, or -1

### ogmrip_lavc_set_max_rate ()

    void                ogmrip_lavc_set_max_rate            (OGMRipLavc *lavc,
                                                             guint max_rate);

Sets the maximum bitrate in kbps

`lavc` : | An OGMRipLavc
`max_rate` : | A bitrate

### ogmrip_lavc_get_max_rate ()

    gint                ogmrip_lavc_get_max_rate            (OGMRipLavc *lavc);

Gets the maximum bitrate in kbps

`lavc` : | An OGMRipLavc
Returns : | The bitrate, or -1

### ogmrip_lavc_set_mbd ()

    void                ogmrip_lavc_set_mbd                 (OGMRipLavc *lavc,
                                                             guint mbd);

Sets the macroblock decision algorithm

`lavc` : | An OGMRipLavc
`mbd` : | The mbd

### ogmrip_lavc_get_mbd ()

    gint                ogmrip_lavc_get_mbd                 (OGMRipLavc *lavc);

Gets the macroblock decision algorithm

`lavc` : | An OGMRipLavc
Returns : | The algorithm, or -1

### ogmrip_lavc_set_min_rate ()

    void                ogmrip_lavc_set_min_rate            (OGMRipLavc *lavc,
                                                             guint min_rate);

Sets the minimum bitrate in kbps

`lavc` : | An OGMRipLavc
`min_rate` : | A bitrate

### ogmrip_lavc_get_min_rate ()

    gint                ogmrip_lavc_get_min_rate            (OGMRipLavc *lavc);

Gets the minimum bitrate in kbps

`lavc` : | An OGMRipLavc
Returns : | The bitrate, or -1

### ogmrip_lavc_set_mv0 ()

    void                ogmrip_lavc_set_mv0                 (OGMRipLavc *lavc,
                                                             gboolean mv0);

Try to encode each MB with MV=<0,0>

`lavc` : | An OGMRipLavc
`mv0` : | TRUE to enable mv0

### ogmrip_lavc_get_mv0 ()

    gboolean            ogmrip_lavc_get_mv0                 (OGMRipLavc *lavc);

Gets whether to try to encode each MB with MV=<0,0>

`lavc` : | An OGMRipLavc
Returns : | TRUE if mv0 is enabled

### ogmrip_lavc_set_preme ()

    void                ogmrip_lavc_set_preme               (OGMRipLavc *lavc,
                                                             guint preme);

Sets the motion estimation pre-pass

`lavc` : | An OGMRipLavc
`preme` : | The estimation

### ogmrip_lavc_get_preme ()

    gint                ogmrip_lavc_get_preme               (OGMRipLavc *lavc);

Gets the motion estimation pre-pass

`lavc` : | An OGMRipLavc
Returns : | The estimation, or -1

### ogmrip_lavc_set_qns ()

    void                ogmrip_lavc_set_qns                 (OGMRipLavc *lavc,
                                                             guint qns);

Sets the quantizer noise shaping

`lavc` : | An OGMRipLavc
`qns` : | The shaping

### ogmrip_lavc_get_qns ()

    gint                ogmrip_lavc_get_qns                 (OGMRipLavc *lavc);

Gets the quantizer noise shaping

`lavc` : | An OGMRipLavc
Returns : | The shaping, or -1

### ogmrip_lavc_set_strict ()

    void                ogmrip_lavc_set_strict              (OGMRipLavc *lavc,
                                                             guint strict);

Sets the strict standard compliancy

`lavc` : | An OGMRipLavc
`strict` : | The strictness

### ogmrip_lavc_get_strict ()

    gint                ogmrip_lavc_get_strict              (OGMRipLavc *lavc);

Gets the strict standard compliancy

`lavc` : | An OGMRipLavc
Returns : | The strictness, or -1

### ogmrip_lavc_set_vb_strategy ()

    void                ogmrip_lavc_set_vb_strategy         (OGMRipLavc *lavc,
                                                             guint vb_strategy);

Sets the strategy to choose between I/P/B-frames

`lavc` : | An OGMRipLavc
`vb_strategy` : | A strategy

### ogmrip_lavc_get_vb_strategy ()

    gint                ogmrip_lavc_get_vb_strategy         (OGMRipLavc *lavc);

Gets the strategy to choose between I/P/B-frames

`lavc` : | An OGMRipLavc
Returns : | The strategy, or -1

### ogmrip_lavc_set_vqcomp ()

    void                ogmrip_lavc_set_vqcomp              (OGMRipLavc *lavc,
                                                             gdouble vqcomp);

Sets the quantizer compression

`lavc` : | An OGMRipLavc
`vqcomp` : | The vqcomp

### ogmrip_lavc_get_vqcomp ()

    gdouble             ogmrip_lavc_get_vqcomp              (OGMRipLavc *lavc);

Gets the quantizer compression

`lavc` : | An OGMRipLavc
Returns : | The compression, or -1