| /* GStreamer |
| * Copyright (C) 2007 Sebastien Moutte <sebastien@moutte.net> |
| * |
| * gstdshowaudiosrc.c: |
| * |
| * 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. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gstdshowaudiosrc.h" |
| |
| GST_DEBUG_CATEGORY_STATIC (dshowaudiosrc_debug); |
| #define GST_CAT_DEFAULT dshowaudiosrc_debug |
| |
| static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("audio/x-raw-int, " |
| "endianness = (int) { " G_STRINGIFY (G_BYTE_ORDER) " }, " |
| "signed = (boolean) { TRUE, FALSE }, " |
| "width = (int) 16, " |
| "depth = (int) 16, " |
| "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]; " |
| "audio/x-raw-int, " |
| "signed = (boolean) { TRUE, FALSE }, " |
| "width = (int) 8, " |
| "depth = (int) 8, " |
| "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]") |
| ); |
| |
| static void gst_dshowaudiosrc_init_interfaces (GType type); |
| |
| GST_BOILERPLATE_FULL (GstDshowAudioSrc, gst_dshowaudiosrc, GstAudioSrc, |
| GST_TYPE_AUDIO_SRC, gst_dshowaudiosrc_init_interfaces); |
| |
| enum |
| { |
| PROP_0, |
| PROP_DEVICE, |
| PROP_DEVICE_NAME |
| }; |
| |
| static void gst_dshowaudiosrc_probe_interface_init (GstPropertyProbeInterface * |
| iface); |
| static const GList *gst_dshowaudiosrc_probe_get_properties (GstPropertyProbe * |
| probe); |
| static GValueArray *gst_dshowaudiosrc_probe_get_values (GstPropertyProbe * |
| probe, guint prop_id, const GParamSpec * pspec); |
| static GValueArray *gst_dshowaudiosrc_get_device_name_values (GstDshowAudioSrc * |
| src); |
| |
| |
| static void gst_dshowaudiosrc_dispose (GObject * gobject); |
| static void gst_dshowaudiosrc_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_dshowaudiosrc_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| static GstCaps *gst_dshowaudiosrc_get_caps (GstBaseSrc * src); |
| static GstStateChangeReturn gst_dshowaudiosrc_change_state (GstElement * |
| element, GstStateChange transition); |
| |
| static gboolean gst_dshowaudiosrc_open (GstAudioSrc * asrc); |
| static gboolean gst_dshowaudiosrc_prepare (GstAudioSrc * asrc, |
| GstRingBufferSpec * spec); |
| static gboolean gst_dshowaudiosrc_unprepare (GstAudioSrc * asrc); |
| static gboolean gst_dshowaudiosrc_close (GstAudioSrc * asrc); |
| static guint gst_dshowaudiosrc_read (GstAudioSrc * asrc, gpointer data, |
| guint length); |
| static guint gst_dshowaudiosrc_delay (GstAudioSrc * asrc); |
| static void gst_dshowaudiosrc_reset (GstAudioSrc * asrc); |
| |
| /* utils */ |
| static GstCaps *gst_dshowaudiosrc_getcaps_from_streamcaps (GstDshowAudioSrc * |
| src, IPin * pin, IAMStreamConfig * streamcaps); |
| static gboolean gst_dshowaudiosrc_push_buffer (guint8 * buffer, guint size, |
| gpointer src_object, GstClockTime duration); |
| |
| static void |
| gst_dshowaudiosrc_init_interfaces (GType type) |
| { |
| static const GInterfaceInfo dshowaudiosrc_info = { |
| (GInterfaceInitFunc) gst_dshowaudiosrc_probe_interface_init, |
| NULL, |
| NULL, |
| }; |
| |
| g_type_add_interface_static (type, |
| GST_TYPE_PROPERTY_PROBE, &dshowaudiosrc_info); |
| } |
| |
| static void |
| gst_dshowaudiosrc_probe_interface_init (GstPropertyProbeInterface * iface) |
| { |
| iface->get_properties = gst_dshowaudiosrc_probe_get_properties; |
| /* iface->needs_probe = gst_dshowaudiosrc_probe_needs_probe; |
| iface->probe_property = gst_dshowaudiosrc_probe_probe_property;*/ |
| iface->get_values = gst_dshowaudiosrc_probe_get_values; |
| } |
| |
| static void |
| gst_dshowaudiosrc_base_init (gpointer klass) |
| { |
| GstElementClass *element_class = GST_ELEMENT_CLASS (klass); |
| |
| gst_element_class_add_pad_template (element_class, |
| gst_static_pad_template_get (&src_template)); |
| |
| gst_element_class_set_details_simple (element_class, |
| "Directshow audio capture source", "Source/Audio", |
| "Receive data from a directshow audio capture graph", |
| "Sebastien Moutte <sebastien@moutte.net>"); |
| } |
| |
| static void |
| gst_dshowaudiosrc_class_init (GstDshowAudioSrcClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstElementClass *gstelement_class; |
| GstBaseSrcClass *gstbasesrc_class; |
| GstAudioSrcClass *gstaudiosrc_class; |
| |
| gobject_class = (GObjectClass *) klass; |
| gstelement_class = (GstElementClass *) klass; |
| gstbasesrc_class = (GstBaseSrcClass *) klass; |
| gstaudiosrc_class = (GstAudioSrcClass *) klass; |
| |
| gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_dispose); |
| gobject_class->set_property = |
| GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_set_property); |
| gobject_class->get_property = |
| GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_get_property); |
| |
| gstelement_class->change_state = |
| GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_change_state); |
| |
| gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_get_caps); |
| |
| gstaudiosrc_class->open = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_open); |
| gstaudiosrc_class->prepare = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_prepare); |
| gstaudiosrc_class->unprepare = |
| GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_unprepare); |
| gstaudiosrc_class->close = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_close); |
| gstaudiosrc_class->read = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_read); |
| gstaudiosrc_class->delay = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_delay); |
| gstaudiosrc_class->reset = GST_DEBUG_FUNCPTR (gst_dshowaudiosrc_reset); |
| |
| g_object_class_install_property |
| (gobject_class, PROP_DEVICE, |
| g_param_spec_string ("device", "Device", |
| "Directshow device reference (classID/name)", NULL, |
| static_cast < GParamFlags > (G_PARAM_READWRITE))); |
| |
| g_object_class_install_property |
| (gobject_class, PROP_DEVICE_NAME, |
| g_param_spec_string ("device-name", "Device name", |
| "Human-readable name of the sound device", NULL, |
| static_cast < GParamFlags > (G_PARAM_READWRITE))); |
| |
| GST_DEBUG_CATEGORY_INIT (dshowaudiosrc_debug, "dshowaudiosrc", 0, |
| "Directshow audio source"); |
| } |
| |
| static void |
| gst_dshowaudiosrc_init (GstDshowAudioSrc * src, GstDshowAudioSrcClass * klass) |
| { |
| src->device = NULL; |
| src->device_name = NULL; |
| src->audio_cap_filter = NULL; |
| src->dshow_fakesink = NULL; |
| src->media_filter = NULL; |
| src->filter_graph = NULL; |
| src->caps = NULL; |
| src->pins_mediatypes = NULL; |
| |
| src->gbarray = g_byte_array_new (); |
| src->gbarray_lock = g_mutex_new (); |
| |
| src->is_running = FALSE; |
| |
| CoInitializeEx (NULL, COINIT_MULTITHREADED); |
| } |
| |
| static void |
| gst_dshowaudiosrc_dispose (GObject * gobject) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (gobject); |
| |
| if (src->device) { |
| g_free (src->device); |
| src->device = NULL; |
| } |
| |
| if (src->device_name) { |
| g_free (src->device_name); |
| src->device_name = NULL; |
| } |
| |
| if (src->caps) { |
| gst_caps_unref (src->caps); |
| src->caps = NULL; |
| } |
| |
| if (src->pins_mediatypes) { |
| gst_dshow_free_pins_mediatypes (src->pins_mediatypes); |
| src->pins_mediatypes = NULL; |
| } |
| |
| if (src->gbarray) { |
| g_byte_array_free (src->gbarray, TRUE); |
| src->gbarray = NULL; |
| } |
| |
| if (src->gbarray_lock) { |
| g_mutex_free (src->gbarray_lock); |
| src->gbarray_lock = NULL; |
| } |
| |
| /* clean dshow */ |
| if (src->audio_cap_filter) |
| src->audio_cap_filter->Release (); |
| |
| CoUninitialize (); |
| |
| G_OBJECT_CLASS (parent_class)->dispose (gobject); |
| } |
| |
| |
| static const GList * |
| gst_dshowaudiosrc_probe_get_properties (GstPropertyProbe * probe) |
| { |
| GObjectClass *klass = G_OBJECT_GET_CLASS (probe); |
| static GList *props = NULL; |
| |
| if (!props) { |
| GParamSpec *pspec; |
| |
| pspec = g_object_class_find_property (klass, "device-name"); |
| props = g_list_append (props, pspec); |
| } |
| |
| return props; |
| } |
| |
| static GValueArray * |
| gst_dshowaudiosrc_get_device_name_values (GstDshowAudioSrc * src) |
| { |
| GValueArray *array = g_value_array_new (0); |
| ICreateDevEnum *devices_enum = NULL; |
| IEnumMoniker *moniker_enum = NULL; |
| IMoniker *moniker = NULL; |
| HRESULT hres = S_FALSE; |
| ULONG fetched; |
| |
| hres = CoCreateInstance (CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, |
| IID_ICreateDevEnum, (LPVOID *) & devices_enum); |
| if (hres != S_OK) { |
| GST_ERROR |
| ("Can't create an instance of the system device enumerator (error=0x%x)", |
| hres); |
| array = NULL; |
| goto clean; |
| } |
| |
| hres = devices_enum->CreateClassEnumerator (CLSID_AudioInputDeviceCategory, |
| &moniker_enum, 0); |
| if (hres != S_OK || !moniker_enum) { |
| GST_ERROR ("Can't get enumeration of audio devices (error=0x%x)", hres); |
| array = NULL; |
| goto clean; |
| } |
| |
| moniker_enum->Reset (); |
| |
| while (hres = moniker_enum->Next (1, &moniker, &fetched), hres == S_OK) { |
| IPropertyBag *property_bag = NULL; |
| |
| hres = moniker->BindToStorage (NULL, NULL, IID_IPropertyBag, |
| (LPVOID *) & property_bag); |
| if (SUCCEEDED (hres) && property_bag) { |
| VARIANT varFriendlyName; |
| |
| VariantInit (&varFriendlyName); |
| hres = property_bag->Read (L"FriendlyName", &varFriendlyName, NULL); |
| if (hres == S_OK && varFriendlyName.bstrVal) { |
| gchar *friendly_name = |
| g_utf16_to_utf8 ((const gunichar2 *) varFriendlyName.bstrVal, |
| wcslen (varFriendlyName.bstrVal), NULL, NULL, NULL); |
| |
| GValue value = { 0 }; |
| g_value_init (&value, G_TYPE_STRING); |
| g_value_set_string (&value, friendly_name); |
| g_value_array_append (array, &value); |
| g_value_unset (&value); |
| g_free (friendly_name); |
| SysFreeString (varFriendlyName.bstrVal); |
| } |
| property_bag->Release (); |
| } |
| moniker->Release (); |
| } |
| |
| clean: |
| if (moniker_enum) |
| moniker_enum->Release (); |
| |
| if (devices_enum) |
| devices_enum->Release (); |
| |
| return array; |
| } |
| |
| static GValueArray * |
| gst_dshowaudiosrc_probe_get_values (GstPropertyProbe * probe, |
| guint prop_id, const GParamSpec * pspec) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (probe); |
| GValueArray *array = NULL; |
| |
| switch (prop_id) { |
| case PROP_DEVICE_NAME: |
| array = gst_dshowaudiosrc_get_device_name_values (src); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec); |
| break; |
| } |
| |
| return array; |
| } |
| |
| static void |
| gst_dshowaudiosrc_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (object); |
| |
| switch (prop_id) { |
| case PROP_DEVICE: |
| { |
| if (src->device) { |
| g_free (src->device); |
| src->device = NULL; |
| } |
| if (g_value_get_string (value)) { |
| src->device = g_strdup (g_value_get_string (value)); |
| } |
| break; |
| } |
| case PROP_DEVICE_NAME: |
| { |
| if (src->device_name) { |
| g_free (src->device_name); |
| src->device_name = NULL; |
| } |
| if (g_value_get_string (value)) { |
| src->device_name = g_strdup (g_value_get_string (value)); |
| } |
| break; |
| } |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static void |
| gst_dshowaudiosrc_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| |
| } |
| |
| static GstCaps * |
| gst_dshowaudiosrc_get_caps (GstBaseSrc * basesrc) |
| { |
| HRESULT hres = S_OK; |
| IBindCtx *lpbc = NULL; |
| IMoniker *audiom = NULL; |
| DWORD dwEaten; |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (basesrc); |
| gunichar2 *unidevice = NULL; |
| |
| if (src->device) { |
| g_free (src->device); |
| src->device = NULL; |
| } |
| |
| src->device = |
| gst_dshow_getdevice_from_devicename (&CLSID_AudioInputDeviceCategory, |
| &src->device_name); |
| if (!src->device) { |
| GST_ERROR ("No audio device found."); |
| return NULL; |
| } |
| unidevice = |
| g_utf8_to_utf16 (src->device, strlen (src->device), NULL, NULL, NULL); |
| |
| if (!src->audio_cap_filter) { |
| hres = CreateBindCtx (0, &lpbc); |
| if (SUCCEEDED (hres)) { |
| hres = |
| MkParseDisplayName (lpbc, (LPCOLESTR) unidevice, &dwEaten, &audiom); |
| if (SUCCEEDED (hres)) { |
| hres = audiom->BindToObject (lpbc, NULL, IID_IBaseFilter, |
| (LPVOID *) & src->audio_cap_filter); |
| audiom->Release (); |
| } |
| lpbc->Release (); |
| } |
| } |
| |
| if (src->audio_cap_filter && !src->caps) { |
| /* get the capture pins supported types */ |
| IPin *capture_pin = NULL; |
| IEnumPins *enumpins = NULL; |
| HRESULT hres; |
| |
| hres = src->audio_cap_filter->EnumPins (&enumpins); |
| if (SUCCEEDED (hres)) { |
| while (enumpins->Next (1, &capture_pin, NULL) == S_OK) { |
| IKsPropertySet *pKs = NULL; |
| |
| hres = |
| capture_pin->QueryInterface (IID_IKsPropertySet, (LPVOID *) & pKs); |
| if (SUCCEEDED (hres) && pKs) { |
| DWORD cbReturned; |
| GUID pin_category; |
| RPC_STATUS rpcstatus; |
| |
| hres = |
| pKs->Get (AMPROPSETID_Pin, |
| AMPROPERTY_PIN_CATEGORY, NULL, 0, &pin_category, sizeof (GUID), |
| &cbReturned); |
| |
| /* we only want capture pins */ |
| if (UuidCompare (&pin_category, (UUID *) & PIN_CATEGORY_CAPTURE, |
| &rpcstatus) == 0) { |
| IAMStreamConfig *streamcaps = NULL; |
| |
| if (SUCCEEDED (capture_pin->QueryInterface (IID_IAMStreamConfig, |
| (LPVOID *) & streamcaps))) { |
| src->caps = |
| gst_dshowaudiosrc_getcaps_from_streamcaps (src, capture_pin, |
| streamcaps); |
| streamcaps->Release (); |
| } |
| } |
| pKs->Release (); |
| } |
| capture_pin->Release (); |
| } |
| enumpins->Release (); |
| } |
| } |
| |
| if (unidevice) { |
| g_free (unidevice); |
| } |
| |
| if (src->caps) { |
| return gst_caps_ref (src->caps); |
| } |
| |
| return NULL; |
| } |
| |
| static GstStateChangeReturn |
| gst_dshowaudiosrc_change_state (GstElement * element, GstStateChange transition) |
| { |
| HRESULT hres = S_FALSE; |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (element); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_NULL_TO_READY: |
| break; |
| case GST_STATE_CHANGE_READY_TO_PAUSED: |
| break; |
| case GST_STATE_CHANGE_PAUSED_TO_PLAYING: |
| if (src->media_filter) |
| hres = src->media_filter->Run (0); |
| if (hres != S_OK) { |
| GST_ERROR ("Can't RUN the directshow capture graph (error=0x%x)", hres); |
| src->is_running = FALSE; |
| return GST_STATE_CHANGE_FAILURE; |
| } else { |
| src->is_running = TRUE; |
| } |
| break; |
| case GST_STATE_CHANGE_PLAYING_TO_PAUSED: |
| if (src->media_filter) |
| hres = src->media_filter->Stop (); |
| if (hres != S_OK) { |
| GST_ERROR ("Can't STOP the directshow capture graph (error=0x%x)", |
| hres); |
| return GST_STATE_CHANGE_FAILURE; |
| } |
| src->is_running = FALSE; |
| |
| break; |
| case GST_STATE_CHANGE_PAUSED_TO_READY: |
| break; |
| case GST_STATE_CHANGE_READY_TO_NULL: |
| break; |
| default: |
| break; |
| } |
| |
| return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
| } |
| |
| static gboolean |
| gst_dshowaudiosrc_open (GstAudioSrc * asrc) |
| { |
| HRESULT hres = S_FALSE; |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| |
| hres = CoCreateInstance (CLSID_FilterGraph, NULL, CLSCTX_INPROC, |
| IID_IFilterGraph, (LPVOID *) & src->filter_graph); |
| if (hres != S_OK || !src->filter_graph) { |
| GST_ERROR |
| ("Can't create an instance of the directshow graph manager (error=0x%x)", |
| hres); |
| goto error; |
| } |
| |
| hres = |
| src->filter_graph->QueryInterface (IID_IMediaFilter, |
| (LPVOID *) & src->media_filter); |
| if (hres != S_OK || !src->media_filter) { |
| GST_ERROR |
| ("Can't get IMediacontrol interface from the graph manager (error=0x%x)", |
| hres); |
| goto error; |
| } |
| |
| src->dshow_fakesink = new CDshowFakeSink; |
| src->dshow_fakesink->AddRef (); |
| |
| hres = src->filter_graph->AddFilter (src->audio_cap_filter, L"capture"); |
| if (hres != S_OK) { |
| GST_ERROR |
| ("Can't add the directshow capture filter to the graph (error=0x%x)", |
| hres); |
| goto error; |
| } |
| |
| hres = src->filter_graph->AddFilter (src->dshow_fakesink, L"fakesink"); |
| if (hres != S_OK) { |
| GST_ERROR ("Can't add our fakesink filter to the graph (error=0x%x)", hres); |
| goto error; |
| } |
| |
| return TRUE; |
| |
| error: |
| if (src->dshow_fakesink) { |
| src->dshow_fakesink->Release (); |
| src->dshow_fakesink = NULL; |
| } |
| |
| if (src->media_filter) { |
| src->media_filter->Release (); |
| src->media_filter = NULL; |
| } |
| if (src->filter_graph) { |
| src->filter_graph->Release (); |
| src->filter_graph = NULL; |
| } |
| |
| return FALSE; |
| } |
| |
| static gboolean |
| gst_dshowaudiosrc_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec) |
| { |
| HRESULT hres; |
| IPin *input_pin = NULL; |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| |
| /* search the negociated caps in our caps list to get its index and the corresponding mediatype */ |
| if (gst_caps_is_subset (spec->caps, src->caps)) { |
| guint i = 0; |
| gint res = -1; |
| |
| for (; i < gst_caps_get_size (src->caps) && res == -1; i++) { |
| GstCaps *capstmp = gst_caps_copy_nth (src->caps, i); |
| |
| if (gst_caps_is_subset (spec->caps, capstmp)) { |
| res = i; |
| } |
| gst_caps_unref (capstmp); |
| } |
| |
| if (res != -1 && src->pins_mediatypes) { |
| /*get the corresponding media type and build the dshow graph */ |
| GstCapturePinMediaType *pin_mediatype = NULL; |
| GList *type = g_list_nth (src->pins_mediatypes, res); |
| |
| if (type) { |
| pin_mediatype = (GstCapturePinMediaType *) type->data; |
| |
| src->dshow_fakesink->gst_set_media_type (pin_mediatype->mediatype); |
| src->dshow_fakesink->gst_set_buffer_callback ( |
| (push_buffer_func) gst_dshowaudiosrc_push_buffer, src); |
| |
| gst_dshow_get_pin_from_filter (src->dshow_fakesink, PINDIR_INPUT, |
| &input_pin); |
| if (!input_pin) { |
| GST_ERROR ("Can't get input pin from our directshow fakesink filter"); |
| goto error; |
| } |
| |
| hres = src->filter_graph->ConnectDirect (pin_mediatype->capture_pin, |
| input_pin, NULL); |
| input_pin->Release (); |
| |
| if (hres != S_OK) { |
| GST_ERROR |
| ("Can't connect capture filter with fakesink filter (error=0x%x)", |
| hres); |
| goto error; |
| } |
| |
| spec->segsize = spec->rate * spec->channels; |
| spec->segtotal = 1; |
| } |
| } |
| } |
| |
| return TRUE; |
| |
| error: |
| return FALSE; |
| } |
| |
| static gboolean |
| gst_dshowaudiosrc_unprepare (GstAudioSrc * asrc) |
| { |
| IPin *input_pin = NULL, *output_pin = NULL; |
| HRESULT hres = S_FALSE; |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| |
| /* disconnect filters */ |
| gst_dshow_get_pin_from_filter (src->audio_cap_filter, PINDIR_OUTPUT, |
| &output_pin); |
| if (output_pin) { |
| hres = src->filter_graph->Disconnect (output_pin); |
| output_pin->Release (); |
| } |
| |
| gst_dshow_get_pin_from_filter (src->dshow_fakesink, PINDIR_INPUT, &input_pin); |
| if (input_pin) { |
| hres = src->filter_graph->Disconnect (input_pin); |
| input_pin->Release (); |
| } |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_dshowaudiosrc_close (GstAudioSrc * asrc) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| |
| if (!src->filter_graph) |
| return TRUE; |
| |
| /*remove filters from the graph */ |
| src->filter_graph->RemoveFilter (src->audio_cap_filter); |
| src->filter_graph->RemoveFilter (src->dshow_fakesink); |
| |
| /*release our gstreamer dshow sink */ |
| src->dshow_fakesink->Release (); |
| src->dshow_fakesink = NULL; |
| |
| /*release media filter interface */ |
| src->media_filter->Release (); |
| src->media_filter = NULL; |
| |
| /*release the filter graph manager */ |
| src->filter_graph->Release (); |
| src->filter_graph = NULL; |
| |
| return TRUE; |
| } |
| |
| static guint |
| gst_dshowaudiosrc_read (GstAudioSrc * asrc, gpointer data, guint length) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| guint ret = 0; |
| |
| if (!src->is_running) |
| return -1; |
| |
| if (src->gbarray) { |
| test: |
| if (src->gbarray->len >= length) { |
| g_mutex_lock (src->gbarray_lock); |
| memcpy (data, src->gbarray->data + (src->gbarray->len - length), length); |
| g_byte_array_remove_range (src->gbarray, src->gbarray->len - length, |
| length); |
| ret = length; |
| g_mutex_unlock (src->gbarray_lock); |
| } else { |
| if (src->is_running) { |
| Sleep (100); |
| goto test; |
| } |
| } |
| } |
| |
| return ret; |
| } |
| |
| static guint |
| gst_dshowaudiosrc_delay (GstAudioSrc * asrc) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| guint ret = 0; |
| |
| if (src->gbarray) { |
| g_mutex_lock (src->gbarray_lock); |
| if (src->gbarray->len) { |
| ret = src->gbarray->len / 4; |
| } |
| g_mutex_unlock (src->gbarray_lock); |
| } |
| |
| return ret; |
| } |
| |
| static void |
| gst_dshowaudiosrc_reset (GstAudioSrc * asrc) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc); |
| |
| g_mutex_lock (src->gbarray_lock); |
| GST_DEBUG ("byte array size= %d", src->gbarray->len); |
| if (src->gbarray->len > 0) |
| g_byte_array_remove_range (src->gbarray, 0, src->gbarray->len); |
| g_mutex_unlock (src->gbarray_lock); |
| } |
| |
| static GstCaps * |
| gst_dshowaudiosrc_getcaps_from_streamcaps (GstDshowAudioSrc * src, IPin * pin, |
| IAMStreamConfig * streamcaps) |
| { |
| GstCaps *caps = NULL; |
| HRESULT hres = S_OK; |
| int icount = 0; |
| int isize = 0; |
| AUDIO_STREAM_CONFIG_CAPS ascc; |
| int i = 0; |
| |
| if (!streamcaps) |
| return NULL; |
| |
| streamcaps->GetNumberOfCapabilities (&icount, &isize); |
| |
| if (isize != sizeof (ascc)) |
| return NULL; |
| |
| for (; i < icount; i++) { |
| GstCapturePinMediaType *pin_mediatype = g_new0 (GstCapturePinMediaType, 1); |
| |
| pin->AddRef (); |
| pin_mediatype->capture_pin = pin; |
| |
| hres = streamcaps->GetStreamCaps (i, &pin_mediatype->mediatype, |
| (BYTE *) & ascc); |
| if (hres == S_OK && pin_mediatype->mediatype) { |
| GstCaps *mediacaps = NULL; |
| |
| if (!caps) |
| caps = gst_caps_new_empty (); |
| |
| if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_PCM, |
| FORMAT_WaveFormatEx)) { |
| WAVEFORMATEX *wavformat = |
| (WAVEFORMATEX *) pin_mediatype->mediatype->pbFormat; |
| mediacaps = |
| gst_caps_new_simple ("audio/x-raw-int", "width", G_TYPE_INT, |
| wavformat->wBitsPerSample, "depth", G_TYPE_INT, |
| wavformat->wBitsPerSample, "endianness", G_TYPE_INT, G_BYTE_ORDER, |
| "signed", G_TYPE_BOOLEAN, TRUE, "channels", G_TYPE_INT, |
| wavformat->nChannels, "rate", G_TYPE_INT, wavformat->nSamplesPerSec, |
| NULL); |
| |
| if (mediacaps) { |
| src->pins_mediatypes = |
| g_list_append (src->pins_mediatypes, pin_mediatype); |
| gst_caps_append (caps, mediacaps); |
| } else { |
| gst_dshow_free_pin_mediatype (pin_mediatype); |
| } |
| } else { |
| gst_dshow_free_pin_mediatype (pin_mediatype); |
| } |
| } else { |
| gst_dshow_free_pin_mediatype (pin_mediatype); |
| } |
| } |
| |
| if (caps && gst_caps_is_empty (caps)) { |
| gst_caps_unref (caps); |
| caps = NULL; |
| } |
| |
| return caps; |
| } |
| |
| static gboolean |
| gst_dshowaudiosrc_push_buffer (guint8 * buffer, guint size, gpointer src_object, |
| GstClockTime duration) |
| { |
| GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (src_object); |
| |
| if (!buffer || size == 0 || !src) { |
| return FALSE; |
| } |
| |
| g_mutex_lock (src->gbarray_lock); |
| g_byte_array_prepend (src->gbarray, buffer, size); |
| g_mutex_unlock (src->gbarray_lock); |
| |
| return TRUE; |
| } |