/* * GStreamer * Copyright (C) 2005,2006 Zaheer Abbas Merali <zaheerabbas at merali dot org> * Copyright (C) 2008 Pioneers of the Inevitable <songbird@songbirdnest.com> * * 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-osxaudiosrc * * This element captures raw audio samples using the CoreAudio api. * * <refsect2> * <title>Example launch line</title> * |[ * gst-launch osxaudiosrc ! wavenc ! filesink location=audio.wav * ]| * </refsect2> */ #ifdef HAVE_CONFIG_H # include <config.h> #endif #include <gst/gst.h> #include <CoreAudio/CoreAudio.h> #include <CoreAudio/AudioHardware.h> #include "gstosxaudiosrc.h" #include "gstosxaudioelement.h" GST_DEBUG_CATEGORY_STATIC (osx_audiosrc_debug); #define GST_CAT_DEFAULT osx_audiosrc_debug /* 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) [1, MAX], " "channels = (int) [1, MAX]") ); 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 GstCaps *gst_osx_audio_src_get_caps (GstBaseSrc * src); static GstRingBuffer *gst_osx_audio_src_create_ringbuffer (GstBaseAudioSrc * src); static void gst_osx_audio_src_osxelement_init (gpointer g_iface, gpointer iface_data); static OSStatus gst_osx_audio_src_io_proc (GstOsxRingBuffer * buf, AudioUnitRenderActionFlags * ioActionFlags, const AudioTimeStamp * inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList * bufferList); static void gst_osx_audio_src_select_device (GstOsxAudioSrc * osxsrc); static void gst_osx_audio_src_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_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_simple (element_class, "Audio Source (OSX)", "Source/Audio", "Input from a sound card in OS X", "Zaheer Abbas Merali <zaheerabbas at merali dot org>"); } static void gst_osx_audio_src_class_init (GstOsxAudioSrcClass * klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; GstBaseSrcClass *gstbasesrc_class; GstBaseAudioSrcClass *gstbaseaudiosrc_class; gobject_class = (GObjectClass *) klass; gstelement_class = (GstElementClass *) klass; gstbasesrc_class = (GstBaseSrcClass *) klass; gstbaseaudiosrc_class = (GstBaseAudioSrcClass *) klass; parent_class = g_type_class_peek_parent (klass); gobject_class->set_property = gst_osx_audio_src_set_property; gobject_class->get_property = gst_osx_audio_src_get_property; gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_osx_audio_src_get_caps); g_object_class_install_property (gobject_class, ARG_DEVICE, g_param_spec_int ("device", "Device ID", "Device ID of input device", 0, G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gstbaseaudiosrc_class->create_ringbuffer = GST_DEBUG_FUNCPTR (gst_osx_audio_src_create_ringbuffer); } static void gst_osx_audio_src_init (GstOsxAudioSrc * src, GstOsxAudioSrcClass * gclass) { gst_base_src_set_live (GST_BASE_SRC (src), TRUE); src->device_id = kAudioDeviceUnknown; src->deviceChannels = -1; } 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: src->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); switch (prop_id) { case ARG_DEVICE: g_value_set_int (value, src->device_id); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static GstCaps * gst_osx_audio_src_get_caps (GstBaseSrc * src) { GstElementClass *gstelement_class; GstOsxAudioSrc *osxsrc; GstPadTemplate *pad_template; GstCaps *caps; gint min, max; gstelement_class = GST_ELEMENT_GET_CLASS (src); osxsrc = GST_OSX_AUDIO_SRC (src); if (osxsrc->deviceChannels == -1) { /* -1 means we don't know the number of channels yet. for now, return * template caps. */ return NULL; } max = osxsrc->deviceChannels; if (max < 1) max = 1; /* 0 channels means 1 channel? */ min = MIN (1, max); pad_template = gst_element_class_get_pad_template (gstelement_class, "src"); g_return_val_if_fail (pad_template != NULL, NULL); caps = gst_caps_copy (gst_pad_template_get_caps (pad_template)); if (min == max) { gst_caps_set_simple (caps, "channels", G_TYPE_INT, max, NULL); } else { gst_caps_set_simple (caps, "channels", GST_TYPE_INT_RANGE, min, max, NULL); } return caps; } static GstRingBuffer * gst_osx_audio_src_create_ringbuffer (GstBaseAudioSrc * src) { GstOsxAudioSrc *osxsrc; GstOsxRingBuffer *ringbuffer; osxsrc = GST_OSX_AUDIO_SRC (src); gst_osx_audio_src_select_device (osxsrc); GST_DEBUG ("Creating ringbuffer"); 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); ringbuffer->element = GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsrc); ringbuffer->is_src = TRUE; ringbuffer->device_id = osxsrc->device_id; return GST_RING_BUFFER (ringbuffer); } static OSStatus gst_osx_audio_src_io_proc (GstOsxRingBuffer * buf, AudioUnitRenderActionFlags * ioActionFlags, const AudioTimeStamp * inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList * bufferList) { OSStatus status; guint8 *writeptr; gint writeseg; gint len; gint remaining; gint offset = 0; status = AudioUnitRender (buf->audiounit, ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, buf->recBufferList); if (status) { GST_WARNING_OBJECT (buf, "AudioUnitRender returned %d", (int) status); return status; } remaining = buf->recBufferList->mBuffers[0].mDataByteSize; while (remaining) { if (!gst_ring_buffer_prepare_read (GST_RING_BUFFER (buf), &writeseg, &writeptr, &len)) return 0; len -= buf->segoffset; if (len > remaining) len = remaining; memcpy (writeptr + buf->segoffset, (char *) buf->recBufferList->mBuffers[0].mData + offset, len); buf->segoffset += len; offset += len; remaining -= len; if ((gint) buf->segoffset == GST_RING_BUFFER (buf)->spec.segsize) { /* we wrote one segment */ gst_ring_buffer_advance (GST_RING_BUFFER (buf), 1); buf->segoffset = 0; } } return 0; } static void gst_osx_audio_src_osxelement_init (gpointer g_iface, gpointer iface_data) { GstOsxAudioElementInterface *iface = (GstOsxAudioElementInterface *) g_iface; iface->io_proc = (AURenderCallback) gst_osx_audio_src_io_proc; } static void gst_osx_audio_src_select_device (GstOsxAudioSrc * osxsrc) { OSStatus status; UInt32 propertySize; if (osxsrc->device_id == kAudioDeviceUnknown) { /* If no specific device has been selected by the user, then pick the * default device */ GST_DEBUG_OBJECT (osxsrc, "Selecting device for OSXAudioSrc"); propertySize = sizeof (osxsrc->device_id); status = AudioHardwareGetProperty (kAudioHardwarePropertyDefaultInputDevice, &propertySize, &osxsrc->device_id); if (status) { GST_WARNING_OBJECT (osxsrc, "AudioHardwareGetProperty returned %d", (int) status); } else { GST_DEBUG_OBJECT (osxsrc, "AudioHardwareGetProperty returned 0"); } if (osxsrc->device_id == kAudioDeviceUnknown) { GST_WARNING_OBJECT (osxsrc, "AudioHardwareGetProperty: device_id is kAudioDeviceUnknown"); } GST_DEBUG_OBJECT (osxsrc, "AudioHardwareGetProperty: device_id is %lu", (long) osxsrc->device_id); } }