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v4l2object: Add MPEG1/2 support

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=720568
This commit is contained in:
Nicolas Dufresne 2013-12-12 14:22:26 -05:00
parent 0c8ec43a12
commit fdd7bcc78c
1 changed files with 35 additions and 7 deletions
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42
sys/v4l2/gstv4l2object.c
View file

@ -61,6 +61,15 @@
#ifndef V4L2_PIX_FMT_NV21M
#define V4L2_PIX_FMT_NV21M GST_MAKE_FOURCC ('N', 'M', '2', '1')
#endif
#ifndef V4L2_PIX_FMT_MPEG1
#define V4L2_PIX_FMT_MPEG1 GST_MAKE_FOURCC ('M', 'P', 'G', '1')
#endif
#ifndef V4L2_PIX_FMT_MPEG2
#define V4L2_PIX_FMT_MPEG2 GST_MAKE_FOURCC ('M', 'P', 'G', '2')
#endif
#ifndef V4L2_PIX_FMT_MPEG4
#define V4L2_PIX_FMT_MPEG4 GST_MAKE_FOURCC ('M', 'P', 'G', '4')
#endif
GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
GST_DEBUG_CATEGORY_EXTERN (GST_CAT_PERFORMANCE);
@ -1020,9 +1029,9 @@ static const GstV4L2FormatDesc gst_v4l2_formats[] = {
#endif
{V4L2_PIX_FMT_DV, TRUE, GST_V4L2_TRANSPORT},
{V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
#ifdef V4L2_PIX_FMT_MPEG4
{V4L2_PIX_FMT_MPEG1, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_MPEG2, TRUE, GST_V4L2_CODEC},
{V4L2_PIX_FMT_MPEG4, TRUE, GST_V4L2_CODEC},
#endif
#ifdef V4L2_PIX_FMT_H263
{V4L2_PIX_FMT_H263, TRUE, GST_V4L2_CODEC},
@ -1454,13 +1463,19 @@ gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
/* FIXME: get correct fourccs here */
break;
#ifdef V4L2_PIX_FMT_MPEG4
case V4L2_PIX_FMT_MPEG1:
structure = gst_structure_new ("video/mpeg",
"mpegversion", G_TYPE_INT, 2, NULL);
break;
case V4L2_PIX_FMT_MPEG2:
structure = gst_structure_new ("video/mpeg",
"mpegversion", G_TYPE_INT, 2, NULL);
break;
case V4L2_PIX_FMT_MPEG4:
structure = gst_structure_new ("video/mpeg",
"mpegversion", G_TYPE_INT, 4, "systemstream",
G_TYPE_BOOLEAN, FALSE, NULL);
break;
#endif
#ifdef V4L2_PIX_FMT_H263
case V4L2_PIX_FMT_H263:
structure = gst_structure_new ("video/x-h263",
@ -1741,10 +1756,23 @@ gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
fourcc = V4L2_PIX_FMT_DV;
} else if (g_str_equal (mimetype, "image/jpeg")) {
fourcc = V4L2_PIX_FMT_JPEG;
#ifdef V4L2_PIX_FMT_MPEG4
} else if (g_str_equal (mimetype, "video/mpeg")) {
fourcc = V4L2_PIX_FMT_MPEG4;
#endif
gint version;
if (gst_structure_get_int (structure, "mpegversion", &version)) {
switch (version) {
case 1:
fourcc = V4L2_PIX_FMT_MPEG1;
break;
case 2:
fourcc = V4L2_PIX_FMT_MPEG2;
break;
case 4:
fourcc = V4L2_PIX_FMT_MPEG4;
break;
default:
break;
}
}
#ifdef V4L2_PIX_FMT_H263
} else if (g_str_equal (mimetype, "video/x-h263")) {
fourcc = V4L2_PIX_FMT_H263;