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vp8enc: add lag-in-frames option.

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This option set maximum of frames codec should remember,
to make better prediktion for alt-ref frames.

See example:
http://www.webmproject.org/tools/encoder-parameters/#2-pass_best_quality_vbr_encoding

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 11:05:36 +02:00 committed by David Schleef
parent 7770eb91aa
commit 782af30aa2
2 changed files with 19 additions and 1 deletions
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19
ext/vp8/gstvp8enc.c
View file

@ -96,6 +96,7 @@ gst_vp8_enc_coder_hook_free (GstVP8EncCoderHook * hook)
#define DEFAULT_MULTIPASS_MODE VPX_RC_ONE_PASS
#define DEFAULT_MULTIPASS_CACHE_FILE "multipass.cache"
#define DEFAULT_AUTO_ALT_REF_FRAMES FALSE
#define DEFAULT_LAG_IN_FRAMES 0
enum
{
@ -112,7 +113,8 @@ enum
PROP_THREADS,
PROP_MULTIPASS_MODE,
PROP_MULTIPASS_CACHE_FILE,
PROP_AUTO_ALT_REF_FRAMES
PROP_AUTO_ALT_REF_FRAMES,
PROP_LAG_IN_FRAMES
};
#define GST_VP8_ENC_MODE_TYPE (gst_vp8_enc_mode_get_type())
@ -328,6 +330,12 @@ gst_vp8_enc_class_init (GstVP8EncClass * klass)
DEFAULT_AUTO_ALT_REF_FRAMES,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_LAG_IN_FRAMES,
g_param_spec_uint ("lag-in-frames", "Max number of frames to lag",
"If set, this value allows the encoder to consume a number of input "
"frames before producing output frames.",
0, 64, DEFAULT_LAG_IN_FRAMES,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
GST_DEBUG_CATEGORY_INIT (gst_vp8enc_debug, "vp8enc", 0, "VP8 Encoder");
}
@ -349,6 +357,7 @@ gst_vp8_enc_init (GstVP8Enc * gst_vp8_enc, GstVP8EncClass * klass)
gst_vp8_enc->multipass_mode = DEFAULT_MULTIPASS_MODE;
gst_vp8_enc->multipass_cache_file = g_strdup (DEFAULT_MULTIPASS_CACHE_FILE);
gst_vp8_enc->auto_alt_ref_frames = DEFAULT_AUTO_ALT_REF_FRAMES;
gst_vp8_enc->lag_in_frames = DEFAULT_LAG_IN_FRAMES;
}
static void
@ -420,6 +429,9 @@ gst_vp8_enc_set_property (GObject * object, guint prop_id,
case PROP_AUTO_ALT_REF_FRAMES:
gst_vp8_enc->auto_alt_ref_frames = g_value_get_boolean (value);
break;
case PROP_LAG_IN_FRAMES:
gst_vp8_enc->lag_in_frames = g_value_get_uint (value);
break;
default:
break;
}
@ -474,6 +486,9 @@ gst_vp8_enc_get_property (GObject * object, guint prop_id, GValue * value,
case PROP_AUTO_ALT_REF_FRAMES:
g_value_set_boolean (value, gst_vp8_enc->auto_alt_ref_frames);
break;
case PROP_LAG_IN_FRAMES:
g_value_set_uint (value, gst_vp8_enc->lag_in_frames);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -621,6 +636,8 @@ gst_vp8_enc_set_format (GstBaseVideoEncoder * base_video_encoder,
(encoder->auto_alt_ref_frames ? 1 : 0), gst_vpx_error_name (status));
}
cfg.g_lag_in_frames = encoder->lag_in_frames;
gst_base_video_encoder_set_latency (base_video_encoder, 0,
gst_util_uint64_scale (encoder->max_latency,
state->fps_d * GST_SECOND, state->fps_n));

1
ext/vp8/gstvp8enc.h
View file

@ -73,6 +73,7 @@ struct _GstVP8Enc
GByteArray *first_pass_cache_content;
vpx_fixed_buf_t last_pass_cache_content;
gboolean auto_alt_ref_frames;
unsigned int lag_in_frames;
/* state */
gboolean inited;