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[MOVED FROM BAD 088/134] vp8enc: add min/maxsection-pct option

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This options should be good to redeuce decode CPU load.
for lowend hardware:
minsection-pct=15 maxsection-pct=400

for hiend hw:
minsection-pct=5 maxsection-pct=800

see example:
http://www.webmproject.org/tools/encoder-parameters/#2-pass_vbr_encoding_for_smooth_playback_on_low-end_hardware

Signed-off-by: Alexey Fisher <bug-track@fisher-privat.net>
Signed-off-by: David Schleef <ds@schleef.org>
This commit is contained in:
Alexey Fisher 2011-06-19 16:06:46 +02:00 committed by Sebastian Dröge
parent 01ec7efbe4
commit 1764be1296
2 changed files with 36 additions and 0 deletions
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34
ext/vp8/gstvp8enc.c
View file

@ -85,6 +85,8 @@ gst_vp8_enc_coder_hook_free (GstVP8EncCoderHook * hook)
#define DEFAULT_BITRATE 0
#define DEFAULT_MODE VPX_VBR
#define DEFAULT_MINSECTION_PCT 5
#define DEFAULT_MAXSECTION_PCT 800
#define DEFAULT_MIN_QUANTIZER 0
#define DEFAULT_MAX_QUANTIZER 63
#define DEFAULT_QUALITY 5
@ -103,6 +105,8 @@ enum
PROP_0,
PROP_BITRATE,
PROP_MODE,
PROP_MINSECTION_PCT,
PROP_MAXSECTION_PCT,
PROP_MIN_QUANTIZER,
PROP_MAX_QUANTIZER,
PROP_QUALITY,
@ -264,6 +268,20 @@ 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_MINSECTION_PCT,
g_param_spec_uint ("minsection-pct",
"minimum percentage allocation per section",
"The numbers represent a percentage of the average allocation per section (frame)",
0, 20, DEFAULT_MINSECTION_PCT,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_MAXSECTION_PCT,
g_param_spec_uint ("maxsection-pct",
"maximum percentage allocation per section",
"The numbers represent a percentage of the average allocation per section (frame)",
200, 800, DEFAULT_MAXSECTION_PCT,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_MIN_QUANTIZER,
g_param_spec_int ("min-quantizer", "Minimum quantizer",
"Minimum (best) quantizer",
@ -347,6 +365,8 @@ 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->minsection_pct = DEFAULT_MINSECTION_PCT;
gst_vp8_enc->maxsection_pct = DEFAULT_MAXSECTION_PCT;
gst_vp8_enc->min_quantizer = DEFAULT_MIN_QUANTIZER;
gst_vp8_enc->max_quantizer = DEFAULT_MAX_QUANTIZER;
gst_vp8_enc->mode = DEFAULT_MODE;
@ -394,6 +414,12 @@ 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_MINSECTION_PCT:
gst_vp8_enc->minsection_pct = g_value_get_uint (value);
break;
case PROP_MAXSECTION_PCT:
gst_vp8_enc->maxsection_pct = g_value_get_uint (value);
break;
case PROP_MIN_QUANTIZER:
gst_vp8_enc->min_quantizer = g_value_get_int (value);
break;
@ -453,6 +479,12 @@ 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_MINSECTION_PCT:
g_value_set_uint (value, gst_vp8_enc->minsection_pct);
break;
case PROP_MAXSECTION_PCT:
g_value_set_uint (value, gst_vp8_enc->maxsection_pct);
break;
case PROP_MIN_QUANTIZER:
g_value_set_int (value, gst_vp8_enc->min_quantizer);
break;
@ -568,6 +600,8 @@ 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;
cfg.rc_2pass_vbr_minsection_pct = encoder->minsection_pct;
cfg.rc_2pass_vbr_maxsection_pct = encoder->maxsection_pct;
/* 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.

2
ext/vp8/gstvp8enc.h
View file

@ -60,6 +60,8 @@ struct _GstVP8Enc
/* properties */
int bitrate;
enum vpx_rc_mode mode;
unsigned int minsection_pct;
unsigned int maxsection_pct;
int min_quantizer;
int max_quantizer;
double quality;