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From ac0c5a55613dfe8f987e9b445ecff0bd95a23d4d Mon Sep 17 00:00:00 2001
From: Sanchayan Maity <sanchayan@asymptotic.io>
Date: Sat, 23 Jan 2021 18:35:12 +0530
Subject: [PATCH 5/7] fdkaacenc: Add support for enabling afterburner
This is an additional quality parameter. In the default configuration this
quality switch is deactivated because it would cause a workload increase
which might be significant. If workload is not an issue in the application
it can be recommended to activate this feature.
---
.../gst-plugins-bad/ext/fdkaac/gstfdkaacenc.c | 26 ++++++++++++++++++-
.../gst-plugins-bad/ext/fdkaac/gstfdkaacenc.h | 1 +
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/ext/fdkaac/gstfdkaacenc.c b/ext/fdkaac/gstfdkaacenc.c
index 95167c1e7d..7c8372e3b5 100644
--- a/ext/fdkaac/gstfdkaacenc.c
+++ b/ext/fdkaac/gstfdkaacenc.c
@@ -31,13 +31,14 @@
/* TODO:
* - Add support for other AOT / profiles
- * - Expose more properties, e.g. afterburner and vbr
+ * - Expose more properties, e.g. vbr
* - Signal encoder delay
*/
enum
{
PROP_0,
+ PROP_AFTERBURNER,
PROP_BITRATE,
PROP_HEADER_PERIOD
};
@@ -112,6 +113,9 @@ gst_fdkaacenc_set_property (GObject * object, guint prop_id,
case PROP_HEADER_PERIOD:
self->header_period = g_value_get_uint (value);
break;
+ case PROP_AFTERBURNER:
+ self->afterburner = g_value_get_boolean (value);
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@@ -132,6 +136,9 @@ gst_fdkaacenc_get_property (GObject * object, guint prop_id,
case PROP_HEADER_PERIOD:
g_value_set_uint (value, self->header_period);
break;
+ case PROP_AFTERBURNER:
+ g_value_set_boolean (value, self->afterburner);
+ break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@@ -404,6 +411,17 @@ gst_fdkaacenc_set_format (GstAudioEncoder * enc, GstAudioInfo * info)
return FALSE;
}
+ if (self->afterburner) {
+ if ((err =
+ aacEncoder_SetParam (self->enc, AACENC_AFTERBURNER,
+ 1)) != AACENC_OK) {
+ GST_ERROR_OBJECT (self, "Could not enable afterburner: %d", err);
+ return FALSE;
+ }
+
+ GST_INFO_OBJECT (self, "Afteburner enabled");
+ }
+
if ((err = aacEncEncode (self->enc, NULL, NULL, NULL, NULL)) != AACENC_OK) {
GST_ERROR_OBJECT (self, "Unable to initialize encoder: %d", err);
return FALSE;
@@ -632,6 +650,7 @@ gst_fdkaacenc_init (GstFdkAacEnc * self)
* TT_MP4_LATM_MCP1 otherwise 0.
*/
self->header_period = 255;
+ self->afterburner = FALSE;
gst_audio_encoder_set_drainable (GST_AUDIO_ENCODER (self), TRUE);
}
@@ -667,6 +686,11 @@ gst_fdkaacenc_class_init (GstFdkAacEncClass * klass)
0, 255, 255 /* auto-mode */ ,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (object_class, PROP_AFTERBURNER,
+ g_param_spec_boolean ("afterburner", "Afterburner - Quality Parameter",
+ "Additional quality control parameter. Can cause workload increase.",
+ FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_static_pad_template (element_class, &src_template);
diff --git a/ext/fdkaac/gstfdkaacenc.h b/ext/fdkaac/gstfdkaacenc.h
index 0ddf1a5981..1da85b8891 100644
--- a/ext/fdkaac/gstfdkaacenc.h
+++ b/ext/fdkaac/gstfdkaacenc.h
@@ -53,6 +53,7 @@ struct _GstFdkAacEnc {
gboolean is_drained;
guint header_period;
+ gboolean afterburner;
};
struct _GstFdkAacEncClass {
--
2.34.1
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