static gboolean
gst_dshowvideosrc_stop (GstBaseSrc * bsrc)
{
IPin *input_pin = NULL, *output_pin = NULL;
HRESULT hres = S_FALSE;
GstDshowVideoSrc *src = GST_DSHOWVIDEOSRC (bsrc);
if (!src->filter_graph)
return TRUE;
/* disconnect filters */
gst_dshow_get_pin_from_filter (src->video_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 ();
}
/* remove filters from the graph */
src->filter_graph->RemoveFilter (src->video_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;
/* reset caps */
if (src->caps) {
gst_caps_unref (src->caps);
src->caps = NULL;
}
/* reset device id */
if (src->device) {
g_free (src->device);
src->device = NULL;
}
return TRUE;
}
static gboolean
gst_dshowvideodec_get_filter_output_format (GstDshowVideoDec * vdec,
GUID * subtype, VIDEOINFOHEADER ** format, guint * size)
{
IPin *output_pin = NULL;
IEnumMediaTypes *enum_mediatypes = NULL;
HRESULT hres;
ULONG fetched;
BOOL ret = FALSE;
if (!vdec->decfilter)
return FALSE;
if (!gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT,
&output_pin)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("failed getting ouput pin from the decoder"), (NULL));
return FALSE;
}
hres = IPin_EnumMediaTypes (output_pin, &enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
IEnumMediaTypes_Reset (enum_mediatypes);
while (hres =
IEnumMoniker_Next (enum_mediatypes, 1, &mediatype, &fetched),
hres == S_OK) {
RPC_STATUS rpcstatus;
if ((UuidCompare (&mediatype->subtype, subtype, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK) &&
(UuidCompare (&mediatype->formattype, &FORMAT_VideoInfo,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
*size = mediatype->cbFormat;
*format = g_malloc0 (*size);
memcpy (*format, mediatype->pbFormat, *size);
ret = TRUE;
}
gst_dshow_free_mediatype (mediatype);
if (ret)
break;
}
IEnumMediaTypes_Release (enum_mediatypes);
}
if (output_pin) {
IPin_Release (output_pin);
}
return ret;
}
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 = IFilterGraph_Disconnect (src->filter_graph, output_pin);
IPin_Release (output_pin);
}
gst_dshow_get_pin_from_filter (src->dshow_fakesink, PINDIR_INPUT, &input_pin);
if (input_pin) {
hres = IFilterGraph_Disconnect (src->filter_graph, input_pin);
IPin_Release (input_pin);
}
return TRUE;
}
static gboolean
gst_dshowvideodec_get_filter_output_format (GstDshowVideoDec * vdec,
const GUID subtype, VIDEOINFOHEADER ** format, guint * size)
{
CComPtr<IPin> output_pin;
CComPtr<IEnumMediaTypes> enum_mediatypes;
HRESULT hres;
ULONG fetched;
BOOL ret = FALSE;
if (!vdec->decfilter)
return FALSE;
output_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("failed getting ouput pin from the decoder"), (NULL));
return FALSE;
}
hres = output_pin->EnumMediaTypes (&enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
enum_mediatypes->Reset();
while (hres =
enum_mediatypes->Next(1, &mediatype, &fetched),
hres == S_OK)
{
if (IsEqualGUID (mediatype->subtype, subtype) &&
IsEqualGUID (mediatype->formattype, FORMAT_VideoInfo))
{
*size = mediatype->cbFormat;
*format = (VIDEOINFOHEADER *)g_malloc0 (*size);
memcpy (*format, mediatype->pbFormat, *size);
ret = TRUE;
}
DeleteMediaType (mediatype);
if (ret)
break;
}
}
return ret;
}
static gboolean
gst_dshowaudiodec_get_filter_settings (GstDshowAudioDec * adec)
{
CComPtr<IPin> output_pin;
CComPtr<IEnumMediaTypes> enum_mediatypes;
HRESULT hres;
ULONG fetched;
BOOL ret = FALSE;
if (adec->decfilter == 0)
return FALSE;
output_pin = gst_dshow_get_pin_from_filter (adec->decfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("failed getting ouput pin from the decoder"), (NULL));
return FALSE;
}
hres = output_pin->EnumMediaTypes (&enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
enum_mediatypes->Reset();
while (!ret && enum_mediatypes->Next(1, &mediatype, &fetched) == S_OK)
{
if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_PCM) &&
IsEqualGUID (mediatype->formattype, FORMAT_WaveFormatEx))
{
WAVEFORMATEX *audio_info = (WAVEFORMATEX *) mediatype->pbFormat;
adec->channels = audio_info->nChannels;
adec->depth = audio_info->wBitsPerSample;
adec->rate = audio_info->nSamplesPerSec;
ret = TRUE;
}
DeleteMediaType (mediatype);
}
}
return ret;
}
static GstCaps *
gst_dshowvideodec_src_getcaps (GstPad * pad)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
GstCaps *caps = NULL;
if (!vdec->srccaps)
vdec->srccaps = gst_caps_new_empty ();
if (vdec->decfilter) {
IPin *output_pin = NULL;
IEnumMediaTypes *enum_mediatypes = NULL;
HRESULT hres;
ULONG fetched;
if (!gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT,
&output_pin)) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED,
("failed getting ouput pin from the decoder"), (NULL));
goto beach;
}
hres = IPin_EnumMediaTypes (output_pin, &enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
IEnumMediaTypes_Reset (enum_mediatypes);
while (hres =
IEnumMoniker_Next (enum_mediatypes, 1, &mediatype, &fetched),
hres == S_OK) {
RPC_STATUS rpcstatus;
VIDEOINFOHEADER *video_info;
GstCaps *mediacaps = NULL;
/* RGB24 */
if ((UuidCompare (&mediatype->subtype, &MEDIASUBTYPE_RGB24,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&mediatype->formattype, &FORMAT_VideoInfo,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
video_info = (VIDEOINFOHEADER *) mediatype->pbFormat;
/* ffmpegcolorspace handles RGB24 in BIG_ENDIAN */
mediacaps = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"width", G_TYPE_INT, video_info->bmiHeader.biWidth,
"height", G_TYPE_INT, video_info->bmiHeader.biHeight,
"framerate", GST_TYPE_FRACTION,
(int) (10000000 / video_info->AvgTimePerFrame), 1, "endianness",
G_TYPE_INT, G_BIG_ENDIAN, "red_mask", G_TYPE_INT, 255,
"green_mask", G_TYPE_INT, 65280, "blue_mask", G_TYPE_INT,
16711680, NULL);
if (mediacaps) {
vdec->mediatypes = g_list_append (vdec->mediatypes, mediatype);
gst_caps_append (vdec->srccaps, mediacaps);
} else {
gst_dshow_free_mediatype (mediatype);
}
} else {
gst_dshow_free_mediatype (mediatype);
}
}
IEnumMediaTypes_Release (enum_mediatypes);
}
if (output_pin) {
IPin_Release (output_pin);
}
}
if (vdec->srccaps)
caps = gst_caps_ref (vdec->srccaps);
beach:
gst_object_unref (vdec);
return caps;
}
static gboolean
gst_dshowvideodec_sink_setcaps (GstPad * pad, GstCaps * caps)
{
gboolean ret = FALSE;
HRESULT hres;
GstStructure *s = gst_caps_get_structure (caps, 0);
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec);
GstBuffer *extradata = NULL;
const GValue *v = NULL;
gint size = 0;
GstCaps *caps_out;
AM_MEDIA_TYPE output_mediatype, input_mediatype;
VIDEOINFOHEADER *input_vheader = NULL, *output_vheader = NULL;
IPin *output_pin = NULL, *input_pin = NULL;
IGstDshowInterface *gstdshowinterface = NULL;
const GValue *fps;
/* read data */
if (!gst_structure_get_int (s, "width", &vdec->width) ||
!gst_structure_get_int (s, "height", &vdec->height)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("error getting video width or height from caps"), (NULL));
goto end;
}
fps = gst_structure_get_value (s, "framerate");
if (!fps) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("error getting video framerate from caps"), (NULL));
goto end;
}
vdec->fps_n = gst_value_get_fraction_numerator (fps);
vdec->fps_d = gst_value_get_fraction_denominator (fps);
if ((v = gst_structure_get_value (s, "codec_data")))
extradata = gst_value_get_buffer (v);
/* define the input type format */
memset (&input_mediatype, 0, sizeof (AM_MEDIA_TYPE));
input_mediatype.majortype = klass->entry->input_majortype;
input_mediatype.subtype = klass->entry->input_subtype;
input_mediatype.bFixedSizeSamples = FALSE;
input_mediatype.bTemporalCompression = TRUE;
if (strstr (klass->entry->sinkcaps, "video/mpeg, mpegversion= (int) 1")) {
size =
sizeof (MPEG1VIDEOINFO) + (extradata ? GST_BUFFER_SIZE (extradata) -
1 : 0);
input_vheader = g_malloc0 (size);
input_vheader->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
if (extradata) {
MPEG1VIDEOINFO *mpeg_info = (MPEG1VIDEOINFO *) input_vheader;
memcpy (mpeg_info->bSequenceHeader,
GST_BUFFER_DATA (extradata), GST_BUFFER_SIZE (extradata));
mpeg_info->cbSequenceHeader = GST_BUFFER_SIZE (extradata);
}
input_mediatype.formattype = FORMAT_MPEGVideo;
} else {
size =
sizeof (VIDEOINFOHEADER) +
(extradata ? GST_BUFFER_SIZE (extradata) : 0);
input_vheader = g_malloc0 (size);
input_vheader->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
if (extradata) { /* Codec data is appended after our header */
memcpy (((guchar *) input_vheader) + sizeof (VIDEOINFOHEADER),
GST_BUFFER_DATA (extradata), GST_BUFFER_SIZE (extradata));
input_vheader->bmiHeader.biSize += GST_BUFFER_SIZE (extradata);
}
input_mediatype.formattype = FORMAT_VideoInfo;
}
input_vheader->rcSource.top = input_vheader->rcSource.left = 0;
input_vheader->rcSource.right = vdec->width;
input_vheader->rcSource.bottom = vdec->height;
input_vheader->rcTarget = input_vheader->rcSource;
input_vheader->bmiHeader.biWidth = vdec->width;
input_vheader->bmiHeader.biHeight = vdec->height;
input_vheader->bmiHeader.biPlanes = 1;
input_vheader->bmiHeader.biBitCount = 16;
input_vheader->bmiHeader.biCompression = klass->entry->format;
input_vheader->bmiHeader.biSizeImage =
(vdec->width * vdec->height) * (input_vheader->bmiHeader.biBitCount / 8);
input_mediatype.cbFormat = size;
input_mediatype.pbFormat = (BYTE *) input_vheader;
input_mediatype.lSampleSize = input_vheader->bmiHeader.biSizeImage;
hres = IBaseFilter_QueryInterface (vdec->srcfilter, &IID_IGstDshowInterface,
(void **) &gstdshowinterface);
if (hres != S_OK || !gstdshowinterface) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get IGstDshowInterface interface from dshow fakesrc filter (error=%d)",
hres), (NULL));
goto end;
}
/* save a reference to IGstDshowInterface to use it processing functions */
if (!vdec->gstdshowsrcfilter) {
vdec->gstdshowsrcfilter = gstdshowinterface;
IBaseFilter_AddRef (vdec->gstdshowsrcfilter);
}
IGstDshowInterface_gst_set_media_type (gstdshowinterface, &input_mediatype);
IGstDshowInterface_Release (gstdshowinterface);
gstdshowinterface = NULL;
/* set the sample size for fakesrc filter to the output buffer size */
IGstDshowInterface_gst_set_sample_size (vdec->gstdshowsrcfilter,
input_mediatype.lSampleSize);
/* connect our fake src to decoder */
gst_dshow_get_pin_from_filter (vdec->srcfilter, PINDIR_OUTPUT, &output_pin);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get output pin from our directshow fakesrc filter"), (NULL));
goto end;
}
gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_INPUT, &input_pin);
if (!input_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get input pin from decoder filter"), (NULL));
goto end;
}
hres =
IFilterGraph_ConnectDirect (vdec->filtergraph, output_pin, input_pin,
NULL);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't connect fakesrc with decoder (error=%d)", hres), (NULL));
goto end;
}
IPin_Release (input_pin);
IPin_Release (output_pin);
input_pin = NULL;
output_pin = NULL;
/* get decoder output video format */
if (!gst_dshowvideodec_get_filter_output_format (vdec,
&klass->entry->output_subtype, &output_vheader, &size)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get decoder output video format"), (NULL));
goto end;
}
memset (&output_mediatype, 0, sizeof (AM_MEDIA_TYPE));
output_mediatype.majortype = klass->entry->output_majortype;
output_mediatype.subtype = klass->entry->output_subtype;
output_mediatype.bFixedSizeSamples = TRUE;
output_mediatype.bTemporalCompression = FALSE;
output_mediatype.lSampleSize = output_vheader->bmiHeader.biSizeImage;
output_mediatype.formattype = FORMAT_VideoInfo;
output_mediatype.cbFormat = size;
output_mediatype.pbFormat = (char *) output_vheader;
hres = IBaseFilter_QueryInterface (vdec->sinkfilter, &IID_IGstDshowInterface,
(void **) &gstdshowinterface);
if (hres != S_OK || !gstdshowinterface) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get IGstDshowInterface interface from dshow fakesink filter (error=%d)",
hres), (NULL));
goto end;
}
IGstDshowInterface_gst_set_media_type (gstdshowinterface, &output_mediatype);
IGstDshowInterface_gst_set_buffer_callback (gstdshowinterface,
gst_dshowvideodec_push_buffer, (byte *) vdec);
IGstDshowInterface_Release (gstdshowinterface);
gstdshowinterface = NULL;
/* connect decoder to our fake sink */
gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT, &output_pin);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get output pin from our decoder filter"), (NULL));
goto end;
}
gst_dshow_get_pin_from_filter (vdec->sinkfilter, PINDIR_INPUT, &input_pin);
if (!input_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get input pin from our directshow fakesink filter"), (NULL));
goto end;
}
hres =
IFilterGraph_ConnectDirect (vdec->filtergraph, output_pin, input_pin,
&output_mediatype);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't connect decoder with fakesink (error=%d)", hres), (NULL));
goto end;
}
/* negotiate output */
caps_out = gst_caps_from_string (klass->entry->srccaps);
gst_caps_set_simple (caps_out,
"width", G_TYPE_INT, vdec->width,
"height", G_TYPE_INT, vdec->height,
"framerate", GST_TYPE_FRACTION, vdec->fps_n, vdec->fps_d, NULL);
if (!gst_pad_set_caps (vdec->srcpad, caps_out)) {
gst_caps_unref (caps_out);
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Failed to negotiate output"), (NULL));
goto end;
}
gst_caps_unref (caps_out);
hres = IMediaFilter_Run (vdec->mediafilter, -1);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't run the directshow graph (error=%d)", hres), (NULL));
goto end;
}
ret = TRUE;
end:
gst_object_unref (vdec);
if (input_vheader)
g_free (input_vheader);
if (gstdshowinterface)
IGstDshowInterface_Release (gstdshowinterface);
if (input_pin)
IPin_Release (input_pin);
if (output_pin)
IPin_Release (output_pin);
return ret;
}
static GstCaps *
gst_dshowvideodec_src_getcaps (GstPad * pad)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
GstCaps *caps = NULL;
if (!vdec->srccaps)
vdec->srccaps = gst_caps_new_empty ();
if (vdec->decfilter) {
CComPtr<IPin> output_pin;
CComPtr<IEnumMediaTypes> enum_mediatypes;
HRESULT hres;
ULONG fetched;
output_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED,
("failed getting ouput pin from the decoder"), (NULL));
goto beach;
}
hres = output_pin->EnumMediaTypes (&enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
enum_mediatypes->Reset();
while (hres =
enum_mediatypes->Next(1, &mediatype, &fetched),
hres == S_OK)
{
VIDEOINFOHEADER *video_info;
GstCaps *mediacaps = NULL;
/* RGB24 */
if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_RGB24) &&
IsEqualGUID (mediatype->formattype, FORMAT_VideoInfo))
{
video_info = (VIDEOINFOHEADER *) mediatype->pbFormat;
/* ffmpegcolorspace handles RGB24 in BIG_ENDIAN */
mediacaps = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"width", G_TYPE_INT, video_info->bmiHeader.biWidth,
"height", G_TYPE_INT, video_info->bmiHeader.biHeight,
"framerate", GST_TYPE_FRACTION,
(int) (10000000 / video_info->AvgTimePerFrame), 1, "endianness",
G_TYPE_INT, G_BIG_ENDIAN, "red_mask", G_TYPE_INT, 255,
"green_mask", G_TYPE_INT, 65280, "blue_mask", G_TYPE_INT,
16711680, NULL);
if (mediacaps) {
vdec->mediatypes = g_list_append (vdec->mediatypes, mediatype);
gst_caps_append (vdec->srccaps, mediacaps);
} else {
DeleteMediaType (mediatype);
}
} else {
DeleteMediaType (mediatype);
}
}
}
}
if (vdec->srccaps)
caps = gst_caps_ref (vdec->srccaps);
beach:
gst_object_unref (vdec);
return caps;
}
static gboolean
gst_dshowvideodec_sink_setcaps (GstPad * pad, GstCaps * caps)
{
gboolean ret = FALSE;
HRESULT hres;
GstStructure *s = gst_caps_get_structure (caps, 0);
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec);
GstBuffer *extradata = NULL;
const GValue *v = NULL;
guint size = 0;
GstCaps *caps_out;
AM_MEDIA_TYPE output_mediatype, input_mediatype;
VIDEOINFOHEADER *input_vheader = NULL, *output_vheader = NULL;
CComPtr<IPin> output_pin;
CComPtr<IPin> input_pin;
IBaseFilter *srcfilter = NULL;
IBaseFilter *sinkfilter = NULL;
const GValue *fps, *par;
/* read data */
if (!gst_structure_get_int (s, "width", &vdec->width) ||
!gst_structure_get_int (s, "height", &vdec->height)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("error getting video width or height from caps"), (NULL));
goto end;
}
fps = gst_structure_get_value (s, "framerate");
if (fps) {
vdec->fps_n = gst_value_get_fraction_numerator (fps);
vdec->fps_d = gst_value_get_fraction_denominator (fps);
}
else {
/* Invent a sane default framerate; the timestamps matter
* more anyway. */
vdec->fps_n = 25;
vdec->fps_d = 1;
}
par = gst_structure_get_value (s, "pixel-aspect-ratio");
if (par) {
vdec->par_n = gst_value_get_fraction_numerator (par);
vdec->par_d = gst_value_get_fraction_denominator (par);
}
else {
vdec->par_n = vdec->par_d = 1;
}
if ((v = gst_structure_get_value (s, "codec_data")))
extradata = gst_value_get_buffer (v);
/* define the input type format */
memset (&input_mediatype, 0, sizeof (AM_MEDIA_TYPE));
input_mediatype.majortype = klass->entry->input_majortype;
input_mediatype.subtype = klass->entry->input_subtype;
input_mediatype.bFixedSizeSamples = FALSE;
input_mediatype.bTemporalCompression = TRUE;
if (strstr (klass->entry->sinkcaps, "video/mpeg, mpegversion= (int) 1")) {
size =
sizeof (MPEG1VIDEOINFO) + (extradata ? GST_BUFFER_SIZE (extradata) -
1 : 0);
input_vheader = (VIDEOINFOHEADER *)g_malloc0 (size);
input_vheader->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
if (extradata) {
MPEG1VIDEOINFO *mpeg_info = (MPEG1VIDEOINFO *) input_vheader;
memcpy (mpeg_info->bSequenceHeader,
GST_BUFFER_DATA (extradata), GST_BUFFER_SIZE (extradata));
mpeg_info->cbSequenceHeader = GST_BUFFER_SIZE (extradata);
}
input_mediatype.formattype = FORMAT_MPEGVideo;
} else {
size =
sizeof (VIDEOINFOHEADER) +
(extradata ? GST_BUFFER_SIZE (extradata) : 0);
input_vheader = (VIDEOINFOHEADER *)g_malloc0 (size);
input_vheader->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
if (extradata) { /* Codec data is appended after our header */
memcpy (((guchar *) input_vheader) + sizeof (VIDEOINFOHEADER),
GST_BUFFER_DATA (extradata), GST_BUFFER_SIZE (extradata));
input_vheader->bmiHeader.biSize += GST_BUFFER_SIZE (extradata);
}
input_mediatype.formattype = FORMAT_VideoInfo;
}
input_vheader->rcSource.top = input_vheader->rcSource.left = 0;
input_vheader->rcSource.right = vdec->width;
input_vheader->rcSource.bottom = vdec->height;
input_vheader->rcTarget = input_vheader->rcSource;
input_vheader->bmiHeader.biWidth = vdec->width;
input_vheader->bmiHeader.biHeight = vdec->height;
input_vheader->bmiHeader.biPlanes = 1;
input_vheader->bmiHeader.biBitCount = 16;
input_vheader->bmiHeader.biCompression = klass->entry->format;
input_vheader->bmiHeader.biSizeImage =
(vdec->width * vdec->height) * (input_vheader->bmiHeader.biBitCount / 8);
input_mediatype.cbFormat = size;
input_mediatype.pbFormat = (BYTE *) input_vheader;
input_mediatype.lSampleSize = input_vheader->bmiHeader.biSizeImage;
vdec->fakesrc->GetOutputPin()->SetMediaType(&input_mediatype);
/* set the sample size for fakesrc filter to the output buffer size */
vdec->fakesrc->GetOutputPin()->SetSampleSize(input_mediatype.lSampleSize);
/* connect our fake src to decoder */
hres = vdec->fakesrc->QueryInterface(IID_IBaseFilter,
(void **) &srcfilter);
if (FAILED (hres)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't QT fakesrc to IBaseFilter: %x", hres), (NULL));
goto end;
}
output_pin = gst_dshow_get_pin_from_filter (srcfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get output pin from our directshow fakesrc filter"), (NULL));
goto end;
}
input_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_INPUT);
if (!input_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get input pin from decoder filter"), (NULL));
goto end;
}
hres = vdec->filtergraph->ConnectDirect (output_pin, input_pin, NULL);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't connect fakesrc with decoder (error=%x)", hres), (NULL));
goto end;
}
/* get decoder output video format */
if (!gst_dshowvideodec_get_filter_output_format (vdec,
klass->entry->output_subtype, &output_vheader, &size)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get decoder output video format"), (NULL));
goto end;
}
memset (&output_mediatype, 0, sizeof (AM_MEDIA_TYPE));
output_mediatype.majortype = klass->entry->output_majortype;
output_mediatype.subtype = klass->entry->output_subtype;
output_mediatype.bFixedSizeSamples = TRUE;
output_mediatype.bTemporalCompression = FALSE;
output_mediatype.lSampleSize = output_vheader->bmiHeader.biSizeImage;
output_mediatype.formattype = FORMAT_VideoInfo;
output_mediatype.cbFormat = size;
output_mediatype.pbFormat = (BYTE *) output_vheader;
vdec->fakesink->SetMediaType (&output_mediatype);
/* connect decoder to our fake sink */
output_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get output pin from our decoder filter"), (NULL));
goto end;
}
hres = vdec->fakesink->QueryInterface(IID_IBaseFilter,
(void **) &sinkfilter);
if (FAILED (hres)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't QT fakesink to IBaseFilter: %x", hres), (NULL));
goto end;
}
input_pin = gst_dshow_get_pin_from_filter (sinkfilter, PINDIR_INPUT);
if (!input_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get input pin from our directshow fakesink filter"), (NULL));
goto end;
}
hres = vdec->filtergraph->ConnectDirect(output_pin, input_pin,
&output_mediatype);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't connect decoder with fakesink (error=%x)", hres), (NULL));
goto end;
}
/* negotiate output */
caps_out = gst_caps_from_string (klass->entry->srccaps);
gst_caps_set_simple (caps_out,
"width", G_TYPE_INT, vdec->width,
"height", G_TYPE_INT, vdec->height, NULL);
if (vdec->fps_n && vdec->fps_d) {
gst_caps_set_simple (caps_out,
"framerate", GST_TYPE_FRACTION, vdec->fps_n, vdec->fps_d, NULL);
}
gst_caps_set_simple (caps_out,
"pixel-aspect-ratio", GST_TYPE_FRACTION, vdec->par_n, vdec->par_d, NULL);
if (!gst_pad_set_caps (vdec->srcpad, caps_out)) {
gst_caps_unref (caps_out);
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Failed to negotiate output"), (NULL));
goto end;
}
gst_caps_unref (caps_out);
hres = vdec->mediafilter->Run (-1);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't run the directshow graph (error=%d)", hres), (NULL));
goto end;
}
ret = TRUE;
end:
gst_object_unref (vdec);
if (input_vheader)
g_free (input_vheader);
if (srcfilter)
srcfilter->Release();
if (sinkfilter)
sinkfilter->Release();
return ret;
}
static gboolean
gst_dshowaudiosrc_prepare (GstAudioSrc * asrc, GstRingBufferSpec * spec)
{
HRESULT hres;
IGstDshowInterface *srcinterface = NULL;
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;
hres =
IBaseFilter_QueryInterface (src->dshow_fakesink,
&IID_IGstDshowInterface, (void **) &srcinterface);
if (hres != S_OK || !srcinterface) {
GST_CAT_ERROR (dshowaudiosrc_debug,
"Can't get IGstDshowInterface interface from our dshow fakesink filter (error=%d)",
hres);
goto error;
}
IGstDshowInterface_gst_set_media_type (srcinterface,
pin_mediatype->mediatype);
IGstDshowInterface_gst_set_buffer_callback (srcinterface,
(byte *) gst_dshowaudiosrc_push_buffer, (byte *) src);
if (srcinterface) {
IGstDshowInterface_Release (srcinterface);
}
gst_dshow_get_pin_from_filter (src->dshow_fakesink, PINDIR_INPUT,
&input_pin);
if (!input_pin) {
GST_CAT_ERROR (dshowaudiosrc_debug,
"Can't get input pin from our directshow fakesink filter");
goto error;
}
hres =
IFilterGraph_ConnectDirect (src->filter_graph,
pin_mediatype->capture_pin, input_pin, NULL);
IPin_Release (input_pin);
if (hres != S_OK) {
GST_CAT_ERROR (dshowaudiosrc_debug,
"Can't connect capture filter with fakesink filter (error=%d)",
hres);
goto error;
}
spec->segsize = spec->rate * spec->channels;
spec->segtotal = 1;
}
}
}
return TRUE;
error:
if (srcinterface) {
IGstDshowInterface_Release (srcinterface);
}
return FALSE;
}
static gboolean
gst_dshowvideosrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
{
HRESULT hres;
IPin *input_pin = NULL;
IPin *output_pin = NULL;
GstDshowVideoSrc *src = GST_DSHOWVIDEOSRC (bsrc);
GstStructure *s = gst_caps_get_structure (caps, 0);
OAFilterState ds_graph_state;
GstCaps *current_caps;
/* search the negociated caps in our caps list to get its index and the corresponding mediatype */
if (gst_caps_is_subset (caps, src->caps)) {
guint i = 0;
gint res = -1;
hres = src->media_control->GetState(0, &ds_graph_state);
if(ds_graph_state == State_Running) {
GST_INFO("Setting caps while DirectShow graph is already running");
current_caps = gst_pad_get_current_caps(GST_BASE_SRC_PAD(src));
if(gst_caps_is_equal(current_caps, caps)) {
/* no need to set caps, just return */
GST_INFO("Not resetting caps");
gst_caps_unref(current_caps);
return TRUE;
}
else {
/* stop graph and disconnect filters so new caps can be set */
GST_INFO("Different caps, stopping DirectShow graph");
hres = src->media_control->Stop();
hres = src->media_control->GetState(2000, &ds_graph_state);
if(hres != S_OK) {
GST_ERROR("Could not stop DirectShow graph. Cannot renegoiate pins.");
goto error;
}
gst_dshow_get_pin_from_filter (src->dshow_fakesink, PINDIR_INPUT,
&input_pin);
if (!input_pin) {
input_pin->Release();
GST_ERROR ("Can't get input pin from our dshow fakesink");
goto error;
}
input_pin->ConnectedTo(&output_pin);
hres = input_pin->Disconnect();
hres = output_pin->Disconnect();
input_pin->Release();
output_pin->Release();
}
gst_caps_unref(current_caps);
}
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 (caps, capstmp)) {
res = i;
}
gst_caps_unref (capstmp);
}
if (res != -1 && src->pins_mediatypes) {
/* get the corresponding media type and build the dshow graph */
GList *type_pin_mediatype = g_list_nth (src->pins_mediatypes, res);
if (type_pin_mediatype) {
GstCapturePinMediaType *pin_mediatype =
(GstCapturePinMediaType *) type_pin_mediatype->data;
gchar *src_caps_string = NULL;
const gchar *format_string = NULL;
/* retrieve the desired video size */
VIDEOINFOHEADER *video_info = NULL;
gint width = 0;
gint height = 0;
gint numerator = 0;
gint denominator = 0;
gst_structure_get_int (s, "width", &width);
gst_structure_get_int (s, "height", &height);
gst_structure_get_fraction (s, "framerate", &numerator, &denominator);
/* check if the desired video size is valid about granularity */
/* This check will be removed when GST_TYPE_INT_RANGE_STEP exits */
/* See remarks in gst_dshow_new_video_caps function */
if (pin_mediatype->granularityWidth != 0
&& width % pin_mediatype->granularityWidth != 0)
g_warning ("your desired video size is not valid : %d mod %d !=0\n",
width, pin_mediatype->granularityWidth);
if (pin_mediatype->granularityHeight != 0
&& height % pin_mediatype->granularityHeight != 0)
g_warning ("your desired video size is not valid : %d mod %d !=0\n",
height, pin_mediatype->granularityHeight);
/* update mediatype */
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
video_info->bmiHeader.biWidth = width;
video_info->bmiHeader.biHeight = height;
video_info->AvgTimePerFrame =
(LONGLONG) (10000000 * denominator / (double) numerator);
video_info->bmiHeader.biSizeImage = DIBSIZE (video_info->bmiHeader);
pin_mediatype->mediatype->lSampleSize = DIBSIZE (video_info->bmiHeader);
src->dshow_fakesink->gst_set_media_type (pin_mediatype->mediatype);
src->dshow_fakesink->gst_set_buffer_callback (
(push_buffer_func) gst_dshowvideosrc_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 dshow fakesink");
goto error;
}
hres = src->filter_graph->ConnectDirect (pin_mediatype->capture_pin,
input_pin, pin_mediatype->mediatype);
input_pin->Release ();
if (hres != S_OK) {
GST_ERROR
("Can't connect capture filter with fakesink filter (error=0x%x)",
hres);
goto error;
}
/* save width and height negociated */
gst_structure_get_int (s, "width", &src->width);
gst_structure_get_int (s, "height", &src->height);
src->is_rgb = FALSE;
format_string = gst_structure_get_string (s, "format");
if(format_string) {
if(!strcmp(format_string, "BGR")) {
src->is_rgb = TRUE;
}
else {
src->is_rgb = FALSE;
}
}
hres = src->media_control->Run();
hres = src->media_control->GetState(5000, &ds_graph_state);
if(hres != S_OK || ds_graph_state != State_Running) {
GST_ERROR("Could not run graph");
goto error;
}
}
}
}
return TRUE;
error:
return FALSE;
}
static gboolean
gst_dshowaudiosrc_prepare (GstAudioSrc * asrc, GstAudioRingBufferSpec * spec)
{
HRESULT hres;
IPin *input_pin = NULL;
GstDshowAudioSrc *src = GST_DSHOWAUDIOSRC (asrc);
GstCaps *current_caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (asrc));
if (current_caps) {
if (gst_caps_is_equal (spec->caps, current_caps)) {
gst_caps_unref (current_caps);
return TRUE;
}
gst_caps_unref (current_caps);
}
/* In 1.0, prepare() seems to be called in the PLAYING state. Most
of the time you can't do much on a running graph. */
gboolean was_running = src->is_running;
if (was_running) {
HRESULT hres = src->media_filter->Stop ();
if (hres != S_OK) {
GST_ERROR("Can't STOP the directshow capture graph for preparing (error=0x%x)", hres);
return FALSE;
}
src->is_running = FALSE;
}
/* 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;
}
spec->segsize = (gint) (spec->info.bpf * spec->info.rate * spec->latency_time /
GST_MSECOND);
spec->segtotal = (gint) ((gfloat) spec->buffer_time /
(gfloat) spec->latency_time + 0.5);
if (!gst_dshow_configure_latency (pin_mediatype->capture_pin,
spec->segsize))
{
GST_WARNING ("Could not change capture latency");
spec->segsize = spec->info.rate * spec->info.channels;
spec->segtotal = 2;
};
GST_INFO ("Configuring with segsize:%d segtotal:%d", spec->segsize, spec->segtotal);
if (gst_dshow_is_pin_connected (pin_mediatype->capture_pin)) {
GST_DEBUG_OBJECT (src,
"capture_pin already connected, disconnecting");
src->filter_graph->Disconnect (pin_mediatype->capture_pin);
}
if (gst_dshow_is_pin_connected (input_pin)) {
GST_DEBUG_OBJECT (src, "input_pin already connected, disconnecting");
src->filter_graph->Disconnect (input_pin);
}
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;
}
}
}
}
if (was_running) {
HRESULT hres = src->media_filter->Run (0);
if (hres != S_OK) {
GST_ERROR("Can't RUN the directshow capture graph after prepare (error=0x%x)", hres);
return FALSE;
}
src->is_running = TRUE;
}
return TRUE;
error:
/* Don't restart the graph, we're out anyway. */
return FALSE;
}
static gboolean
gst_dshowvideosrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
{
HRESULT hres;
IPin *input_pin = NULL;
GstDshowVideoSrc *src = GST_DSHOWVIDEOSRC (bsrc);
GstStructure *s = gst_caps_get_structure (caps, 0);
GstCaps *current_caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (bsrc));
if (current_caps) {
if (gst_caps_is_equal (caps, current_caps)) {
gst_caps_unref (current_caps);
return TRUE;
}
gst_caps_unref (current_caps);
}
/* Same remark as in gstdshowaudiosrc. */
gboolean was_running = src->is_running;
if (was_running) {
HRESULT hres = src->media_filter->Stop ();
if (hres != S_OK) {
GST_ERROR ("Can't STOP the directshow capture graph (error=0x%x)", hres);
return FALSE;
}
src->is_running = FALSE;
}
/* search the negociated caps in our caps list to get its index and the corresponding mediatype */
if (gst_caps_is_subset (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 (caps, capstmp)) {
res = i;
}
gst_caps_unref (capstmp);
}
if (res != -1 && src->pins_mediatypes) {
/* get the corresponding media type and build the dshow graph */
GList *type_pin_mediatype = g_list_nth (src->pins_mediatypes, res);
if (type_pin_mediatype) {
GstCapturePinMediaType *pin_mediatype =
(GstCapturePinMediaType *) type_pin_mediatype->data;
gchar *caps_string = NULL;
gchar *src_caps_string = NULL;
/* retrieve the desired video size */
VIDEOINFOHEADER *video_info = NULL;
gint width = 0;
gint height = 0;
gint numerator = 0;
gint denominator = 0;
gst_structure_get_int (s, "width", &width);
gst_structure_get_int (s, "height", &height);
gst_structure_get_fraction (s, "framerate", &numerator, &denominator);
/* check if the desired video size is valid about granularity */
/* This check will be removed when GST_TYPE_INT_RANGE_STEP exits */
/* See remarks in gst_dshow_new_video_caps function */
if (pin_mediatype->granularityWidth != 0
&& width % pin_mediatype->granularityWidth != 0)
g_warning ("your desired video size is not valid : %d mod %d !=0\n",
width, pin_mediatype->granularityWidth);
if (pin_mediatype->granularityHeight != 0
&& height % pin_mediatype->granularityHeight != 0)
g_warning ("your desired video size is not valid : %d mod %d !=0\n",
height, pin_mediatype->granularityHeight);
/* update mediatype */
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
video_info->bmiHeader.biWidth = width;
video_info->bmiHeader.biHeight = height;
video_info->AvgTimePerFrame =
(LONGLONG) (10000000 * denominator / (double) numerator);
video_info->bmiHeader.biSizeImage = DIBSIZE (video_info->bmiHeader);
pin_mediatype->mediatype->lSampleSize = DIBSIZE (video_info->bmiHeader);
src->dshow_fakesink->gst_set_media_type (pin_mediatype->mediatype);
src->dshow_fakesink->gst_set_buffer_callback (
(push_buffer_func) gst_dshowvideosrc_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 dshow fakesink");
goto error;
}
if (gst_dshow_is_pin_connected (pin_mediatype->capture_pin)) {
GST_DEBUG_OBJECT (src,
"capture_pin already connected, disconnecting");
src->filter_graph->Disconnect (pin_mediatype->capture_pin);
}
if (gst_dshow_is_pin_connected (input_pin)) {
GST_DEBUG_OBJECT (src, "input_pin already connected, disconnecting");
src->filter_graph->Disconnect (input_pin);
}
hres = src->filter_graph->ConnectDirect (pin_mediatype->capture_pin,
input_pin, pin_mediatype->mediatype);
input_pin->Release ();
if (hres != S_OK) {
GST_ERROR
("Can't connect capture filter with fakesink filter (error=0x%x)",
hres);
goto error;
}
/* save width and height negociated */
gst_structure_get_int (s, "width", &src->width);
gst_structure_get_int (s, "height", &src->height);
GstVideoInfo info;
gst_video_info_from_caps(&info, caps);
switch (GST_VIDEO_INFO_FORMAT(&info)) {
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
src->is_rgb = TRUE;
break;
default:
src->is_rgb = FALSE;
break;
}
}
}
}
if (was_running) {
HRESULT hres = src->media_filter->Run (0);
if (hres != S_OK) {
GST_ERROR ("Can't RUN the directshow capture graph (error=0x%x)", hres);
return FALSE;
}
src->is_running = TRUE;
}
return TRUE;
error:
return FALSE;
}
static gboolean
gst_dshowaudiodec_setup_graph (GstDshowAudioDec * adec, GstCaps *caps)
{
gboolean ret = FALSE;
GstDshowAudioDecClass *klass =
(GstDshowAudioDecClass *) G_OBJECT_GET_CLASS (adec);
HRESULT hres;
GstCaps *outcaps;
AM_MEDIA_TYPE *output_mediatype = NULL;
AM_MEDIA_TYPE *input_mediatype = NULL;
CComPtr<IPin> output_pin;
CComPtr<IPin> input_pin;
const AudioCodecEntry *codec_entry = klass->entry;
CComQIPtr<IBaseFilter> srcfilter;
CComQIPtr<IBaseFilter> sinkfilter;
input_mediatype = dshowaudiodec_set_input_format (adec, caps);
adec->fakesrc->GetOutputPin()->SetMediaType (input_mediatype);
srcfilter = adec->fakesrc;
/* connect our fake source to decoder */
output_pin = gst_dshow_get_pin_from_filter (srcfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't get output pin from our directshow fakesrc filter"), (NULL));
goto end;
}
input_pin = gst_dshow_get_pin_from_filter (adec->decfilter, PINDIR_INPUT);
if (!input_pin) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't get input pin from decoder filter"), (NULL));
goto end;
}
hres = adec->filtergraph->ConnectDirect (output_pin, input_pin,
NULL);
if (hres != S_OK) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't connect fakesrc with decoder (error=%x)", hres), (NULL));
goto end;
}
output_mediatype = dshowaudiodec_set_output_format (adec);
if (!output_mediatype) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't get audio output format from decoder"), (NULL));
goto end;
}
adec->fakesink->SetMediaType(output_mediatype);
outcaps = gst_caps_new_simple ("audio/x-raw-int",
"width", G_TYPE_INT, adec->depth,
"depth", G_TYPE_INT, adec->depth,
"rate", G_TYPE_INT, adec->rate,
"channels", G_TYPE_INT, adec->channels,
"signed", G_TYPE_BOOLEAN, TRUE,
"endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
NULL);
if (!gst_pad_set_caps (adec->srcpad, outcaps)) {
gst_caps_unref (outcaps);
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Failed to negotiate output"), (NULL));
goto end;
}
gst_caps_unref (outcaps);
/* connect the decoder to our fake sink */
output_pin = gst_dshow_get_pin_from_filter (adec->decfilter, PINDIR_OUTPUT);
if (!output_pin) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't get output pin from our decoder filter"), (NULL));
goto end;
}
sinkfilter = adec->fakesink;
input_pin = gst_dshow_get_pin_from_filter (sinkfilter, PINDIR_INPUT);
if (!input_pin) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't get input pin from our directshow fakesink filter"), (NULL));
goto end;
}
hres = adec->filtergraph->ConnectDirect(output_pin, input_pin, NULL);
if (hres != S_OK) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't connect decoder with fakesink (error=%x)", hres), (NULL));
goto end;
}
hres = adec->mediafilter->Run (-1);
if (hres != S_OK) {
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
("Can't run the directshow graph (error=%x)", hres), (NULL));
goto end;
}
ret = TRUE;
adec->setup = TRUE;
end:
if (input_mediatype)
dshowadec_free_mediatype (input_mediatype);
if (output_mediatype)
dshowadec_free_mediatype (output_mediatype);
return ret;
}
