/* GstBaseTransform vmethod implementations */ static GstFlowReturn gst_audio_amplify_transform_ip (GstBaseTransform * base, GstBuffer * buf) { GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (base); guint num_samples; GstClockTime timestamp, stream_time; timestamp = GST_BUFFER_TIMESTAMP (buf); stream_time = gst_segment_to_stream_time (&base->segment, GST_FORMAT_TIME, timestamp); GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (timestamp)); if (GST_CLOCK_TIME_IS_VALID (stream_time)) gst_object_sync_values (G_OBJECT (filter), stream_time); num_samples = GST_BUFFER_SIZE (buf) / (GST_AUDIO_FILTER (filter)->format.width / 8); if (gst_base_transform_is_passthrough (base) || G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_GAP))) return GST_FLOW_OK; filter->process (filter, GST_BUFFER_DATA (buf), num_samples); return GST_FLOW_OK; }
/* GstAudioFilter vmethod implementations */ static gboolean gst_audio_amplify_setup (GstAudioFilter * base, GstRingBufferSpec * format) { GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (base); return gst_audio_amplify_set_process_function (filter, filter->clipping_method, format->type, format->width); }
static void gst_audio_amplify_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (object); switch (prop_id) { case PROP_AMPLIFICATION: g_value_set_float (value, filter->amplification); break; case PROP_CLIPPING_METHOD: g_value_set_enum (value, filter->clipping_method); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }
/* GstBaseTransform vmethod implementations */ static GstFlowReturn gst_audio_amplify_transform_ip (GstBaseTransform * base, GstBuffer * buf) { GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (base); guint num_samples = GST_BUFFER_SIZE (buf) / (GST_AUDIO_FILTER (filter)->format.width / 8); if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf))) gst_object_sync_values (G_OBJECT (filter), GST_BUFFER_TIMESTAMP (buf)); if (gst_base_transform_is_passthrough (base) || G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_GAP))) return GST_FLOW_OK; filter->process (filter, GST_BUFFER_DATA (buf), num_samples); return GST_FLOW_OK; }
static void gst_audio_amplify_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (object); switch (prop_id) { case PROP_AMPLIFICATION: filter->amplification = g_value_get_float (value); gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), filter->amplification == 1.0); break; case PROP_CLIPPING_METHOD: gst_audio_amplify_set_process_function (filter, g_value_get_enum (value), filter->format, filter->width); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } }
/* GstAudioFilter vmethod implementations */ static gboolean gst_audio_amplify_setup (GstAudioFilter * base, GstRingBufferSpec * format) { GstAudioAmplify *filter = GST_AUDIO_AMPLIFY (base); gboolean ret; if (format->type == GST_BUFTYPE_LINEAR && format->width == 16) filter->format_index = 0; else if (format->type == GST_BUFTYPE_FLOAT && format->width == 32) filter->format_index = 1; else goto wrong_format; ret = gst_audio_amplify_set_process_function (filter); if (!ret) GST_WARNING ("can't process input"); return ret; wrong_format: GST_DEBUG ("wrong format"); return FALSE; }