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vp8enc: Add properties to select a maximum and minimum quantizer

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Fixes bug #641405.
This commit is contained in:
Alexey Fisher 2011-05-18 13:26:23 +02:00 committed by Sebastian Dröge
parent a9ea882307
commit 1b650b6486
2 changed files with 40 additions and 1 deletions
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39
ext/vp8/gstvp8enc.c
View file

@ -67,6 +67,8 @@ typedef struct
#define DEFAULT_BITRATE 0
#define DEFAULT_MODE VPX_VBR
#define DEFAULT_MIN_QUANTIZER 0
#define DEFAULT_MAX_QUANTIZER 63
#define DEFAULT_QUALITY 5
#define DEFAULT_ERROR_RESILIENT FALSE
#define DEFAULT_MAX_LATENCY 10
@ -82,6 +84,8 @@ enum
PROP_0,
PROP_BITRATE,
PROP_MODE,
PROP_MIN_QUANTIZER,
PROP_MAX_QUANTIZER,
PROP_QUALITY,
PROP_ERROR_RESILIENT,
PROP_MAX_LATENCY,
@ -240,6 +244,18 @@ gst_vp8_enc_class_init (GstVP8EncClass * klass)
GST_VP8_ENC_MODE_TYPE, DEFAULT_MODE,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_MIN_QUANTIZER,
g_param_spec_int ("qp-min", "Minimum quantizer",
"Minimum (best) quantizer",
0, 63, DEFAULT_MIN_QUANTIZER,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_MAX_QUANTIZER,
g_param_spec_int ("qp-max", "Maximum quantizer",
"Maximum (worst) quantizer",
0, 63, DEFAULT_MAX_QUANTIZER,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_QUALITY,
g_param_spec_double ("quality", "Quality",
"Quality. This parameter set constant quantizer.",
@ -305,6 +321,8 @@ gst_vp8_enc_init (GstVP8Enc * gst_vp8_enc, GstVP8EncClass * klass)
GST_DEBUG_OBJECT (gst_vp8_enc, "init");
gst_vp8_enc->bitrate = DEFAULT_BITRATE;
gst_vp8_enc->min_quantizer = DEFAULT_MIN_QUANTIZER;
gst_vp8_enc->max_quantizer = DEFAULT_MAX_QUANTIZER;
gst_vp8_enc->mode = DEFAULT_MODE;
gst_vp8_enc->quality = DEFAULT_QUALITY;
gst_vp8_enc->error_resilient = DEFAULT_ERROR_RESILIENT;
@ -349,6 +367,12 @@ gst_vp8_enc_set_property (GObject * object, guint prop_id,
case PROP_MODE:
gst_vp8_enc->mode = g_value_get_enum (value);
break;
case PROP_MIN_QUANTIZER:
gst_vp8_enc->min_quantizer = g_value_get_int (value);
break;
case PROP_MAX_QUANTIZER:
gst_vp8_enc->max_quantizer = g_value_get_int (value);
break;
case PROP_QUALITY:
gst_vp8_enc->quality = g_value_get_double (value);
break;
@ -399,6 +423,12 @@ gst_vp8_enc_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_MODE:
g_value_set_enum (value, gst_vp8_enc->mode);
break;
case PROP_MIN_QUANTIZER:
g_value_set_int (value, gst_vp8_enc->min_quantizer);
break;
case PROP_MAX_QUANTIZER:
g_value_set_int (value, gst_vp8_enc->max_quantizer);
break;
case PROP_QUALITY:
g_value_set_double (value, gst_vp8_enc->quality);
break;
@ -505,8 +535,15 @@ gst_vp8_enc_set_format (GstBaseVideoEncoder * base_video_encoder,
cfg.g_lag_in_frames = encoder->max_latency;
cfg.g_threads = encoder->threads;
cfg.rc_end_usage = encoder->mode;
if (encoder->bitrate) {
/* Standalone qp-min do not make any sence, with bitrate=0 and qp-min=1
* encoder will use only default qp-max=63. Also this will make
* worst possbile quality.
*/
if (encoder->bitrate != DEFAULT_BITRATE ||
encoder->max_quantizer != DEFAULT_MAX_QUANTIZER) {
cfg.rc_target_bitrate = encoder->bitrate / 1000;
cfg.rc_min_quantizer = encoder->min_quantizer;
cfg.rc_max_quantizer = encoder->max_quantizer;
} else {
cfg.rc_min_quantizer = (gint) (63 - encoder->quality * 6.2);
cfg.rc_max_quantizer = (gint) (63 - encoder->quality * 6.2);

2
ext/vp8/gstvp8enc.h
View file

@ -60,6 +60,8 @@ struct _GstVP8Enc
/* properties */
int bitrate;
enum vpx_rc_mode mode;
int min_quantizer;
int max_quantizer;
double quality;
gboolean error_resilient;
int max_latency;