/* * GStreamer * Copyright 2005,2006 Zaheer Abbas Merali * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Alternatively, the contents of this file may be used under the * GNU Lesser General Public License Version 2.1 (the "LGPL"), in * which case the following provisions apply instead of the ones * mentioned above: * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:element-plugin * * * Example launch line * * * gst-launch -v -m osxaudiosrc ! fakesink * * * */ #ifdef HAVE_CONFIG_H # include #endif #include #include #include "gstosxaudiosrc.h" #include "gstosxaudioelement.h" GST_DEBUG_CATEGORY_STATIC (osx_audiosrc_debug); #define GST_CAT_DEFAULT osx_audiosrc_debug static GstElementDetails gst_osx_audio_src_details = GST_ELEMENT_DETAILS ("Audio Source (OSX)", "Source/Audio", "Input from a sound card in OS X", "Zaheer Abbas Merali "); /* Filter signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_DEVICE }; static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS ("audio/x-raw-float, " "endianness = (int) {" G_STRINGIFY (G_BYTE_ORDER) " }, " "signed = (boolean) { TRUE }, " "width = (int) 32, " "depth = (int) 32, " "rate = (int) 44100, " "channels = (int) 2") ); static void gst_osx_audio_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_osx_audio_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); static GstRingBuffer *gst_osx_audio_src_create_ringbuffer (GstBaseAudioSrc * src); /*static GstCaps* gst_osx_audio_sink_getcaps (GstBaseSink * bsrc);*/ static void gst_osx_audio_src_osxelement_init (gpointer g_iface, gpointer iface_data); OSStatus gst_osx_audio_src_io_proc (AudioDeviceID inDevice, const AudioTimeStamp * inNow, const AudioBufferList * inInputData, const AudioTimeStamp * inInputTime, AudioBufferList * outOutputData, const AudioTimeStamp * inOutputTime, void *inClientData); static void gst_osx_audio_src_osxelement_do_init (GType type) { static const GInterfaceInfo osxelement_info = { gst_osx_audio_src_osxelement_init, NULL, NULL }; GST_DEBUG_CATEGORY_INIT (osx_audiosrc_debug, "osxaudiosrc", 0, "OSX Audio Src"); GST_DEBUG ("Adding static interface"); g_type_add_interface_static (type, GST_OSX_AUDIO_ELEMENT_TYPE, &osxelement_info); } GST_BOILERPLATE_FULL (GstOsxAudioSrc, gst_osx_audio_src, GstBaseAudioSrc, GST_TYPE_BASE_AUDIO_SRC, gst_osx_audio_src_osxelement_do_init); static void gst_osx_audio_src_base_init (gpointer g_class) { GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&src_factory)); gst_element_class_set_details (element_class, &gst_osx_audio_src_details); } /* initialize the plugin's class */ static void gst_osx_audio_src_class_init (GstOsxAudioSrcClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseAudioSrcClass *gstbaseaudiosrc_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbaseaudiosrc_class = (GstBaseAudioSrcClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_osx_audio_src_set_property); gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_osx_audio_src_get_property); g_object_class_install_property (gobject_class, ARG_DEVICE, g_param_spec_int ("device", "Device ID", "Device ID of output device", 0, G_MAXINT, 0, G_PARAM_READWRITE)); gstbaseaudiosrc_class->create_ringbuffer = GST_DEBUG_FUNCPTR (gst_osx_audio_src_create_ringbuffer); } /* initialize the new element * instantiate pads and add them to element * set functions * initialize structure */ static void gst_osx_audio_src_init (GstOsxAudioSrc * src, GstOsxAudioSrcClass * gclass) { /* GstElementClass *klass = GST_ELEMENT_GET_CLASS (sink); */ gst_base_src_set_live (GST_BASE_SRC (src), TRUE); src->ringbuffer = NULL; GST_DEBUG ("Initialising object"); gst_osx_audio_src_create_ringbuffer (GST_BASE_AUDIO_SRC (src)); } static void gst_osx_audio_src_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstOsxAudioSrc *src = GST_OSX_AUDIO_SRC (object); switch (prop_id) { case ARG_DEVICE: if (src->ringbuffer) src->ringbuffer->device_id = g_value_get_int (value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gst_osx_audio_src_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstOsxAudioSrc *src = GST_OSX_AUDIO_SRC (object); int val = 0; switch (prop_id) { case ARG_DEVICE: if (src->ringbuffer) val = src->ringbuffer->device_id; g_value_set_int (value, val); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* GstElement vmethod implementations */ /* GstBaseAudioSink vmethod implementations */ static GstRingBuffer * gst_osx_audio_src_create_ringbuffer (GstBaseAudioSrc * src) { GstOsxAudioSrc *osxsrc; osxsrc = GST_OSX_AUDIO_SRC (src); if (!osxsrc->ringbuffer) { GST_DEBUG ("Creating ringbuffer"); osxsrc->ringbuffer = g_object_new (GST_TYPE_OSX_RING_BUFFER, NULL); GST_DEBUG ("osx src 0x%p element 0x%p ioproc 0x%p", osxsrc, GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsrc), (void *) gst_osx_audio_src_io_proc); osxsrc->ringbuffer->element = GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsrc); } return GST_RING_BUFFER (osxsrc->ringbuffer); } OSStatus gst_osx_audio_src_io_proc (AudioDeviceID inDevice, const AudioTimeStamp * inNow, const AudioBufferList * inInputData, const AudioTimeStamp * inInputTime, AudioBufferList * outOutputData, const AudioTimeStamp * inOutputTime, void *inClientData) { GstOsxRingBuffer *buf = GST_OSX_RING_BUFFER (inClientData); guint8 *writeptr; gint writeseg; gint len; if (gst_ring_buffer_prepare_read (GST_RING_BUFFER (buf), &writeseg, &writeptr, &len)) { memcpy (writeptr, (char *) inInputData->mBuffers[0].mData, len); /* clear written samples */ /*gst_ring_buffer_clear (GST_RING_BUFFER(buf), writeseg); */ /* we wrote one segment */ gst_ring_buffer_advance (GST_RING_BUFFER (buf), 1); } return 0; } static void gst_osx_audio_src_osxelement_init (gpointer g_iface, gpointer iface_data) { GstOsxAudioElementInterface *iface = (GstOsxAudioElementInterface *) g_iface; iface->io_proc = gst_osx_audio_src_io_proc; }