gstreamer/sys/dshowsrcwrapper/gstdshowaudiosrc.cpp
2012-11-04 00:09:59 +00:00

844 lines
23 KiB
C++

/* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, 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_static_metadata (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;
}