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dshowsrcwrapper: add a helper function to check a media type

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This commit is contained in:
Julien Isorce 2009-08-10 16:03:17 +02:00
parent ee5c497212
commit 67dd6694a1
4 changed files with 30 additions and 39 deletions
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15
sys/dshowsrcwrapper/gstdshow.cpp
View file

@ -70,6 +70,21 @@ gst_dshow_free_pins_mediatypes (GList *pins_mediatypes)
g_list_free (pins_mediatypes);
}
gboolean
gst_dshow_check_mediatype (AM_MEDIA_TYPE *media_type, const GUID sub_type,
const GUID format_type)
{
RPC_STATUS rpcstatus;
g_return_val_if_fail (media_type != NULL, FALSE);
return
UuidCompare (&media_type->subtype, (UUID *) &sub_type,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK &&
UuidCompare (&media_type->formattype, (UUID *) &format_type,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK;
}
gboolean
gst_dshow_get_pin_from_filter (IBaseFilter *filter, PIN_DIRECTION pindir, IPin **pin)
{

3
sys/dshowsrcwrapper/gstdshow.h
View file

@ -54,6 +54,9 @@ void gst_dshow_free_mediatype (AM_MEDIA_TYPE *pmt);
/* free the memory of all mediatypes of the input list if pin mediatype */
void gst_dshow_free_pins_mediatypes (GList *mediatypes);
/* allow to know what kind of media type we have */
gboolean gst_dshow_check_mediatype (AM_MEDIA_TYPE *media_type, const GUID sub_type, const GUID format_type);
/* get a pin from directshow filter */
gboolean gst_dshow_get_pin_from_filter (IBaseFilter *filter, PIN_DIRECTION pindir, IPin **pin);

7
sys/dshowsrcwrapper/gstdshowaudiosrc.cpp
View file

@ -757,7 +757,6 @@ gst_dshowaudiosrc_getcaps_from_streamcaps (GstDshowAudioSrc * src, IPin * pin,
{
GstCaps *caps = NULL;
HRESULT hres = S_OK;
RPC_STATUS rpcstatus;
int icount = 0;
int isize = 0;
AUDIO_STREAM_CONFIG_CAPS ascc;
@ -785,11 +784,7 @@ gst_dshowaudiosrc_getcaps_from_streamcaps (GstDshowAudioSrc * src, IPin * pin,
if (!caps)
caps = gst_caps_new_empty ();
if ((UuidCompare (&pin_mediatype->mediatype->subtype, (UUID *) &MEDIASUBTYPE_PCM,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&pin_mediatype->mediatype->formattype,
(UUID *) &FORMAT_WaveFormatEx, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK)) {
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_PCM, FORMAT_WaveFormatEx)) {
WAVEFORMATEX *wavformat =
(WAVEFORMATEX *) pin_mediatype->mediatype->pbFormat;
mediacaps =

44
sys/dshowsrcwrapper/gstdshowvideosrc.cpp
View file

@ -26,6 +26,8 @@
#include "gstdshowvideosrc.h"
#include <gst/video/video.h>
static const GstElementDetails gst_dshowvideosrc_details =
GST_ELEMENT_DETAILS ("DirectShow video capture source",
"Source/Video",
@ -43,12 +45,9 @@ const GUID MEDIASUBTYPE_I420
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-rgb,"
"bpp = (int) 24,"
"depth = (int) 24,"
"width = (int) [ 1, MAX ],"
"height = (int) [ 1, MAX ],"
"framerate = (fraction) [ 0, MAX ];"
GST_STATIC_CAPS (
GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_YUV ("{ I420 }") ";"
"video/x-dv,"
"systemstream = (boolean) FALSE,"
"width = (int) [ 1, MAX ],"
@ -56,11 +55,7 @@ static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
"framerate = (fraction) [ 0, MAX ],"
"format = (fourcc) dvsd;"
"video/x-dv,"
"systemstream = (boolean) TRUE;"
"video/x-raw-yuv,"
"width = (int) [ 1, MAX ],"
"height = (int) [ 1, MAX ],"
"framerate = (fraction) [ 0, MAX ]," "format = (fourcc) I420")
"systemstream = (boolean) TRUE")
);
static void gst_dshowvideosrc_init_interfaces (GType type);
@ -904,7 +899,6 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
{
GstCaps *caps = NULL;
HRESULT hres = S_OK;
RPC_STATUS rpcstatus;
int icount = 0;
int isize = 0;
VIDEO_STREAM_CONFIG_CAPS vscc;
@ -945,11 +939,7 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
/* value that the filter supports" as it said in the VIDEO_STREAM_CONFIG_CAPS dshwo doc */
/* I420 */
if ((UuidCompare (&pin_mediatype->mediatype->subtype, (UUID *) &MEDIASUBTYPE_I420,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&pin_mediatype->mediatype->formattype,
(UUID *) &FORMAT_VideoInfo, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK)) {
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_I420, FORMAT_VideoInfo)) {
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
video_default->defaultWidth = video_info->bmiHeader.biWidth;
@ -979,12 +969,8 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
continue;
}
/* RGB24 */
if ((UuidCompare (&pin_mediatype->mediatype->subtype, (UUID *) &MEDIASUBTYPE_RGB24,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&pin_mediatype->mediatype->formattype,
(UUID *) &FORMAT_VideoInfo, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK)) {
/* BGR */
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_RGB24, FORMAT_VideoInfo)) {
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
video_default->defaultWidth = video_info->bmiHeader.biWidth;
@ -1021,11 +1007,7 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
}
/* DVSD */
if ((UuidCompare (&pin_mediatype->mediatype->subtype, (UUID *) &MEDIASUBTYPE_dvsd,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&pin_mediatype->mediatype->formattype,
(UUID *) &FORMAT_VideoInfo, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK)) {
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_dvsd, FORMAT_VideoInfo)) {
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
video_default->defaultWidth = video_info->bmiHeader.biWidth;
@ -1057,11 +1039,7 @@ gst_dshowvideosrc_getcaps_from_streamcaps (GstDshowVideoSrc * src, IPin * pin,
}
/* DV stream */
if ((UuidCompare (&pin_mediatype->mediatype->subtype, (UUID *) &MEDIASUBTYPE_dvsd,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&pin_mediatype->mediatype->formattype,
(UUID *) &FORMAT_DvInfo, &rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
if (gst_dshow_check_mediatype (pin_mediatype->mediatype, MEDIASUBTYPE_dvsd, FORMAT_DvInfo)) {
video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
//No video size in caps when stream ? I do know if the following fields exist