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audiobuffersplit: Add strict-buffer-size property

Browse source 
If set to TRUE, any last audio samples too small to fill a buffer will
be discarded.

https://bugzilla.gnome.org/show_bug.cgi?id=779064
This commit is contained in:
Vivia Nikolaidou 2017-02-20 18:58:11 +02:00 committed by Sebastian Dröge
parent e2dffab9be
commit 668c44072b
2 changed files with 28 additions and 2 deletions
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24
gst/audiobuffersplit/gstaudiobuffersplit.c
View file

@ -45,6 +45,7 @@ enum
PROP_OUTPUT_BUFFER_DURATION,
PROP_ALIGNMENT_THRESHOLD,
PROP_DISCONT_WAIT,
PROP_STRICT_BUFFER_SIZE,
LAST_PROP
};
@ -52,6 +53,7 @@ enum
#define DEFAULT_OUTPUT_BUFFER_DURATION_D (50)
#define DEFAULT_ALIGNMENT_THRESHOLD (40 * GST_MSECOND)
#define DEFAULT_DISCONT_WAIT (1 * GST_SECOND)
#define DEFAULT_STRICT_BUFFER_SIZE (FALSE)
#define parent_class gst_audio_buffer_split_parent_class
G_DEFINE_TYPE (GstAudioBufferSplit, gst_audio_buffer_split, GST_TYPE_ELEMENT);
@ -105,6 +107,13 @@ gst_audio_buffer_split_class_init (GstAudioBufferSplitClass * klass)
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_STRICT_BUFFER_SIZE,
g_param_spec_boolean ("strict-buffer-size", "Strict buffer size",
"Discard the last samples at EOS or discont if they are too "
"small to fill a buffer", DEFAULT_STRICT_BUFFER_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
gst_element_class_set_static_metadata (gstelement_class,
"Audio Buffer Split", "Audio/Filter",
"Splits raw audio buffers into equal sized chunks",
@ -140,6 +149,7 @@ gst_audio_buffer_split_init (GstAudioBufferSplit * self)
self->output_buffer_duration_d = DEFAULT_OUTPUT_BUFFER_DURATION_D;
self->alignment_threshold = DEFAULT_ALIGNMENT_THRESHOLD;
self->discont_wait = DEFAULT_DISCONT_WAIT;
self->strict_buffer_size = DEFAULT_STRICT_BUFFER_SIZE;
self->adapter = gst_adapter_new ();
}
@ -175,6 +185,9 @@ gst_audio_buffer_split_set_property (GObject * object, guint property_id,
case PROP_DISCONT_WAIT:
self->discont_wait = g_value_get_uint64 (value);
break;
case PROP_STRICT_BUFFER_SIZE:
self->strict_buffer_size = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -198,6 +211,9 @@ gst_audio_buffer_split_get_property (GObject * object, guint property_id,
case PROP_DISCONT_WAIT:
g_value_set_uint64 (value, self->discont_wait);
break;
case PROP_STRICT_BUFFER_SIZE:
g_value_set_boolean (value, self->strict_buffer_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
@ -379,8 +395,13 @@ gst_audio_buffer_split_handle_discont (GstAudioBufferSplit * self,
GST_INFO_OBJECT (self, "Have discont. Expected %"
G_GUINT64_FORMAT ", got %" G_GUINT64_FORMAT,
self->next_offset, start_offset);
if (self->strict_buffer_size) {
gst_adapter_clear (self->adapter);
ret = GST_FLOW_OK;
} else {
ret = gst_audio_buffer_split_output (self, TRUE);
}
}
self->next_offset = end_offset;
self->resync_time = timestamp;
self->current_offset = 0;
@ -499,6 +520,9 @@ gst_audio_buffer_split_sink_event (GstPad * pad, GstObject * parent,
}
break;
case GST_EVENT_EOS:
if (self->strict_buffer_size)
gst_adapter_clear (self->adapter);
else
gst_audio_buffer_split_output (self, TRUE);
ret = gst_pad_event_default (pad, parent, event);
break;

2
gst/audiobuffersplit/gstaudiobuffersplit.h
View file

@ -63,6 +63,8 @@ struct _GstAudioBufferSplit {
guint samples_per_buffer;
guint error_per_buffer;
guint accumulated_error;
gboolean strict_buffer_size;
};
struct _GstAudioBufferSplitClass {