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v4l2: Put emulated formats behind native formats

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Fixes bug #593764.
This commit is contained in:
Sebastian Dröge 2009-09-03 20:38:50 +02:00
parent 371875c57a
commit 4fda384a83
1 changed files with 67 additions and 29 deletions
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96
sys/v4l2/gstv4l2object.c
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@ -720,88 +720,126 @@ gst_v4l2_object_get_format_from_fourcc (GstV4l2Object * v4l2object,
#define PWC_BASE_RANK 1
static gint
gst_v4l2_object_format_get_rank (guint32 fourcc)
gst_v4l2_object_format_get_rank (const struct v4l2_fmtdesc *fmt)
{
guint32 fourcc = fmt->pixelformat;
#ifdef V4L2_FMT_FLAG_EMULATED
gboolean emulated = ((flags & V4L2_FMT_FLAG_EMULATED) != 0);
#else
gboolean emulated = FALSE;
#endif
gint rank = 0;
switch (fourcc) {
case V4L2_PIX_FMT_MJPEG:
return JPEG_BASE_RANK;
rank = JPEG_BASE_RANK;
break;
case V4L2_PIX_FMT_JPEG:
return JPEG_BASE_RANK + 1;
rank = JPEG_BASE_RANK + 1;
break;
case V4L2_PIX_FMT_RGB332:
case V4L2_PIX_FMT_RGB555:
case V4L2_PIX_FMT_RGB555X:
case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_RGB565X:
return RGB_ODD_BASE_RANK;
rank = RGB_ODD_BASE_RANK;
break;
case V4L2_PIX_FMT_RGB24:
case V4L2_PIX_FMT_BGR24:
return RGB_BASE_RANK - 1;
rank = RGB_BASE_RANK - 1;
break;
case V4L2_PIX_FMT_RGB32:
case V4L2_PIX_FMT_BGR32:
return RGB_BASE_RANK;
rank = RGB_BASE_RANK;
break;
case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
return GREY_BASE_RANK;
rank = GREY_BASE_RANK;
break;
case V4L2_PIX_FMT_NV12: /* 12 Y/CbCr 4:2:0 */
case V4L2_PIX_FMT_NV21: /* 12 Y/CrCb 4:2:0 */
case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
return YUV_ODD_BASE_RANK;
rank = YUV_ODD_BASE_RANK;
break;
case V4L2_PIX_FMT_YVU410: /* YVU9, 9 bits per pixel */
return YUV_BASE_RANK + 3;
rank = YUV_BASE_RANK + 3;
break;
case V4L2_PIX_FMT_YUV410: /* YUV9, 9 bits per pixel */
return YUV_BASE_RANK + 2;
rank = YUV_BASE_RANK + 2;
break;
case V4L2_PIX_FMT_YUV420: /* I420, 12 bits per pixel */
return YUV_BASE_RANK + 7;
rank = YUV_BASE_RANK + 7;
break;
case V4L2_PIX_FMT_YUYV: /* YUY2, 16 bits per pixel */
return YUV_BASE_RANK + 10;
rank = YUV_BASE_RANK + 10;
break;
case V4L2_PIX_FMT_YVU420: /* YV12, 12 bits per pixel */
return YUV_BASE_RANK + 6;
rank = YUV_BASE_RANK + 6;
break;
case V4L2_PIX_FMT_UYVY: /* UYVY, 16 bits per pixel */
return YUV_BASE_RANK + 9;
rank = YUV_BASE_RANK + 9;
break;
case V4L2_PIX_FMT_Y41P: /* Y41P, 12 bits per pixel */
return YUV_BASE_RANK + 5;
rank = YUV_BASE_RANK + 5;
break;
case V4L2_PIX_FMT_YUV411P: /* Y41B, 12 bits per pixel */
return YUV_BASE_RANK + 4;
rank = YUV_BASE_RANK + 4;
break;
case V4L2_PIX_FMT_YUV422P: /* Y42B, 16 bits per pixel */
return YUV_BASE_RANK + 8;
rank = YUV_BASE_RANK + 8;
break;
case V4L2_PIX_FMT_DV:
return DV_BASE_RANK;
rank = DV_BASE_RANK;
break;
case V4L2_PIX_FMT_MPEG: /* MPEG */
case V4L2_PIX_FMT_WNVA: /* Winnov hw compres */
return 0;
rank = 0;
break;
#ifdef V4L2_PIX_FMT_SBGGR8
case V4L2_PIX_FMT_SBGGR8:
return BAYER_BASE_RANK;
rank = BAYER_BASE_RANK;
break;
#endif
#ifdef V4L2_PIX_FMT_SN9C10X
case V4L2_PIX_FMT_SN9C10X:
return S910_BASE_RANK;
rank = S910_BASE_RANK;
break;
#endif
#ifdef V4L2_PIX_FMT_PWC1
case V4L2_PIX_FMT_PWC1:
return PWC_BASE_RANK;
rank = PWC_BASE_RANK;
break;
#endif
#ifdef V4L2_PIX_FMT_PWC2
case V4L2_PIX_FMT_PWC2:
return PWC_BASE_RANK;
rank = PWC_BASE_RANK;
break;
#endif
default:
rank = 0;
break;
}
return 0;
/* All ranks are below 1<<15 so a shift by 15
* will a) make all non-emulated formats larger
* than emulated and b) will not overflow
*/
if (!emulated)
rank <<= 15;
return rank;
}
@ -809,14 +847,14 @@ gst_v4l2_object_format_get_rank (guint32 fourcc)
static gint
format_cmp_func (gconstpointer a, gconstpointer b)
{
guint32 pf1 = ((struct v4l2_fmtdesc *) a)->pixelformat;
guint32 pf2 = ((struct v4l2_fmtdesc *) b)->pixelformat;
const struct v4l2_fmtdesc *fa = a;
const struct v4l2_fmtdesc *fb = b;
if (pf1 == pf2)
if (fa->pixelformat == fb->pixelformat)
return 0;
return gst_v4l2_object_format_get_rank (pf2) -
gst_v4l2_object_format_get_rank (pf1);
return gst_v4l2_object_format_get_rank (fa) -
gst_v4l2_object_format_get_rank (fb);
}
/******************************************************