yair/gst-plugin-linescan
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

niimaqdx: allow Mono16 to be big or little endian depending on interface

Browse Source 
It appears FireWire and GigE Vision use different endianness. So now we need
to keep track of two things, PixelFormat and endianness.
This commit is contained in:
Joshua M. Doe 2013-01-30 12:07:19 -05:00
parent b7e1085885
commit 881a75b1f8
2 changed files with 59 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
sys/niimaqdx/gstniimaqdx.c
View File

@ -160,95 +160,100 @@ gst_niimaqdxsrc_frame_done_callback (IMAQdxSession session, uInt32 bufferNumber,
"framerate = " GST_VIDEO_FPS_RANGE
ImaqDxCapsInfo imaq_dx_caps_infos[] = {
{"Mono 8", GST_VIDEO_CAPS_GRAY8, 8, 8, 4}
{"Mono 8", 0, GST_VIDEO_CAPS_GRAY8, 8, 8, 4}
,
//TODO: for packed formats, should we unpack?
//{"Mono 12 Packed", GST_VIDEO_CAPS_GRAY16 ("BIG_ENDIAN"), 16, 16},
{"Mono 16", GST_VIDEO_CAPS_GRAY16 ("BIG_ENDIAN"), 16, 16, 4}
{"Mono 16", G_LITTLE_ENDIAN, GST_VIDEO_CAPS_GRAY16 ("LITTLE_ENDIAN"), 16, 16,
4}
,
{"YUV 422 Packed", GST_VIDEO_CAPS_YUV ("UYVY"), 16, 16, 4}
{"Mono 16", G_BIG_ENDIAN, GST_VIDEO_CAPS_GRAY16 ("BIG_ENDIAN"), 16, 16, 4}
,
{"Bayer BG 8", GST_VIDEO_CAPS_BAYER ("bggr"), 8, 8, 1}
{"YUV 422 Packed", 0, GST_VIDEO_CAPS_YUV ("UYVY"), 16, 16, 4}
,
{"Bayer BG 8", 0, GST_VIDEO_CAPS_BAYER ("bggr"), 8, 8, 1}
,
//TODO: use a caps string that agrees with Aravis
{"Bayer BG 16", GST_VIDEO_CAPS_BAYER ("bggr16"), 16, 16, 1}
{"Bayer BG 16", 0, GST_VIDEO_CAPS_BAYER ("bggr16"), 16, 16, 1}
};
static ImaqDxCapsInfo *
gst_niimaqdxsrc_get_caps_info (const char *pixel_format)
gst_niimaqdxsrc_get_caps_info (const char *pixel_format, int endianness)
{
int i;
for (i = 0; i < G_N_ELEMENTS (imaq_dx_caps_infos); i++) {
if (g_strcmp0 (pixel_format, imaq_dx_caps_infos[i].pixel_format) == 0)
return &imaq_dx_caps_infos[i];
ImaqDxCapsInfo *info = &imaq_dx_caps_infos[i];
if (g_strcmp0 (pixel_format, info->pixel_format) == 0 &&
(info->endianness == endianness || info->endianness == 0))
return info;
}
GST_WARNING ("PixelFormat '%s' is not supported", pixel_format);
return NULL;
}
static const char *
gst_niimaqdxsrc_pixel_format_to_caps_string (const char *pixel_format)
gst_niimaqdxsrc_pixel_format_to_caps_string (const char *pixel_format,
int endianness)
{
int i;
ImaqDxCapsInfo *info =
gst_niimaqdxsrc_get_caps_info (pixel_format, endianness);
for (i = 0; i < G_N_ELEMENTS (imaq_dx_caps_infos); i++) {
if (g_strcmp0 (pixel_format, imaq_dx_caps_infos[i].pixel_format) == 0)
break;
}
if (i == G_N_ELEMENTS (imaq_dx_caps_infos)) {
GST_WARNING ("PixelFormat '%s' is not supported",
imaq_dx_caps_infos[i].pixel_format);
if (!info)
return NULL;
}
return imaq_dx_caps_infos[i].gst_caps_string;
return info->gst_caps_string;
}
static const char *
gst_niimaqdxsrc_pixel_format_from_caps (const GstCaps * caps)
gst_niimaqdxsrc_pixel_format_from_caps (const GstCaps * caps, int *endianness)
{
int i;
for (i = 0; i < G_N_ELEMENTS (imaq_dx_caps_infos); i++) {
GstCaps *super_caps;
super_caps = gst_caps_from_string (imaq_dx_caps_infos[i].gst_caps_string);
if (gst_caps_is_subset (caps, super_caps))
if (gst_caps_is_subset (caps, super_caps)) {
*endianness = imaq_dx_caps_infos[i].endianness;
return imaq_dx_caps_infos[i].pixel_format;
}
}
return NULL;
}
static int
gst_niimaqdxsrc_pixel_format_get_bpp (const char *pixel_format)
gst_niimaqdxsrc_pixel_format_get_bpp (const char *pixel_format, int endianness)
{
int i;
ImaqDxCapsInfo *info =
gst_niimaqdxsrc_get_caps_info (pixel_format, endianness);
for (i = 0; i < G_N_ELEMENTS (imaq_dx_caps_infos); i++) {
if (g_strcmp0 (pixel_format, imaq_dx_caps_infos[i].pixel_format) == 0) {
return imaq_dx_caps_infos[i].bpp;
}
}
if (!info)
return 0;
return info->bpp;
}
static int
gst_niimaqdxsrc_pixel_format_get_stride (const char *pixel_format, int width)
gst_niimaqdxsrc_pixel_format_get_stride (const char *pixel_format,
int endianness, int width)
{
return width * gst_niimaqdxsrc_pixel_format_get_bpp (pixel_format) / 8;
return width * gst_niimaqdxsrc_pixel_format_get_bpp (pixel_format,
endianness) / 8;
}
static GstCaps *
gst_niimaqdxsrc_new_caps_from_pixel_format (const char *pixel_format,
int width, int height,
int framerate_n, int framerate_d, int par_n, int par_d)
int endianness, int width, int height, int framerate_n, int framerate_d,
int par_n, int par_d)
{
const char *caps_string;
GstCaps *caps;
GstStructure *structure;
caps_string = gst_niimaqdxsrc_pixel_format_to_caps_string (pixel_format);
caps_string =
gst_niimaqdxsrc_pixel_format_to_caps_string (pixel_format, endianness);
if (caps_string == NULL)
return NULL;
@ -704,19 +709,21 @@ gst_niimaqdxsrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
gboolean res = TRUE;
GstStructure *structure;
const char *pixel_format;
int endianness;
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &niimaqdxsrc->width);
gst_structure_get_int (structure, "height", &niimaqdxsrc->height);
pixel_format = gst_niimaqdxsrc_pixel_format_from_caps (caps);
pixel_format = gst_niimaqdxsrc_pixel_format_from_caps (caps, &endianness);
g_assert (pixel_format);
niimaqdxsrc->caps_info = gst_niimaqdxsrc_get_caps_info (pixel_format);
niimaqdxsrc->caps_info =
gst_niimaqdxsrc_get_caps_info (pixel_format, endianness);
niimaqdxsrc->dx_row_stride =
gst_niimaqdxsrc_pixel_format_get_stride (pixel_format,
gst_niimaqdxsrc_pixel_format_get_stride (pixel_format, endianness,
niimaqdxsrc->width);
niimaqdxsrc->framesize =
@ -1000,6 +1007,8 @@ gst_niimaqdxsrc_get_cam_caps (GstNiImaqDxSrc * niimaqdxsrc)
IMAQdxError rval;
uInt32 val;
char pixel_format[IMAQDX_MAX_API_STRING_LENGTH];
int endianness;
char bus_type[IMAQDX_MAX_API_STRING_LENGTH];
gint width, height;
if (!niimaqdxsrc->session) {
@ -1015,6 +1024,9 @@ gst_niimaqdxsrc_get_cam_caps (GstNiImaqDxSrc * niimaqdxsrc)
rval = IMAQdxGetAttribute (niimaqdxsrc->session, IMAQdxAttributePixelFormat,
IMAQdxValueTypeString, &pixel_format);
gst_niimaqdxsrc_report_imaq_error (rval);
rval &= IMAQdxGetAttribute (niimaqdxsrc->session, IMAQdxAttributeBusType,
IMAQdxValueTypeString, &bus_type);
gst_niimaqdxsrc_report_imaq_error (rval);
rval &= IMAQdxGetAttribute (niimaqdxsrc->session, IMAQdxAttributeWidth,
IMAQdxValueTypeU32, &val);
gst_niimaqdxsrc_report_imaq_error (rval);
@ -1030,10 +1042,16 @@ gst_niimaqdxsrc_get_cam_caps (GstNiImaqDxSrc * niimaqdxsrc)
("attempt to read attributes failed"));
goto error;
}
if (g_strcmp0 (bus_type, "Ethernet") == 0)
endianness = G_LITTLE_ENDIAN;
else
endianness = G_BIG_ENDIAN;
//TODO: add all available caps by enumerating PixelFormat's available, and query for framerate
caps =
gst_niimaqdxsrc_new_caps_from_pixel_format (pixel_format, width, height,
30, 1, 1, 1);
gst_niimaqdxsrc_new_caps_from_pixel_format (pixel_format, endianness,
width, height, 30, 1, 1, 1);
if (!caps) {
GST_ERROR_OBJECT (niimaqdxsrc, "PixelFormat '%s' not supported yet",
pixel_format);

1
sys/niimaqdx/gstniimaqdx.h
View File

@ -49,6 +49,7 @@ typedef struct _GstNiImaqDxSrcClass GstNiImaqDxSrcClass;
typedef struct
{
const char *pixel_format;
int endianness;
const char *gst_caps_string;
int bpp;
int depth;