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v4l2object: Split caps in different categories
This is need to correctly expose capabilities on specialized devices like decoders and encoders. https://bugzilla.gnome.org/show_bug.cgi?id=720568
This commit is contained in:
Nicolas Dufresne
parent
88ac735af3
commit
e821de3494
2 changed files with 103 additions and 59 deletions
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@ -943,82 +943,91 @@ gst_v4l2_object_close (GstV4l2Object * v4l2object)
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/*
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* common format / caps utilities:
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*/
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typedef enum
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{
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GST_V4L2_RAW = 1 << 0,
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GST_V4L2_CODEC = 1 << 1,
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GST_V4L2_TRANSPORT = 1 << 2,
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GST_V4L2_ALL = 0xffff
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} GstV4L2FormatFlags;
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typedef struct
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{
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guint32 format;
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gboolean dimensions;
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GstV4L2FormatFlags flags;
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} GstV4L2FormatDesc;
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static const GstV4L2FormatDesc gst_v4l2_formats[] = {
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/* from Linux 2.6.15 videodev2.h */
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{V4L2_PIX_FMT_RGB332, TRUE},
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{V4L2_PIX_FMT_RGB555, TRUE},
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{V4L2_PIX_FMT_RGB565, TRUE},
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{V4L2_PIX_FMT_RGB555X, TRUE},
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{V4L2_PIX_FMT_RGB565X, TRUE},
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{V4L2_PIX_FMT_BGR24, TRUE},
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{V4L2_PIX_FMT_RGB24, TRUE},
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{V4L2_PIX_FMT_BGR32, TRUE},
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{V4L2_PIX_FMT_RGB32, TRUE},
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{V4L2_PIX_FMT_GREY, TRUE},
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{V4L2_PIX_FMT_YVU410, TRUE},
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{V4L2_PIX_FMT_YVU420, TRUE},
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{V4L2_PIX_FMT_YUYV, TRUE},
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{V4L2_PIX_FMT_UYVY, TRUE},
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{V4L2_PIX_FMT_YUV422P, TRUE},
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{V4L2_PIX_FMT_YUV411P, TRUE},
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{V4L2_PIX_FMT_Y41P, TRUE},
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{V4L2_PIX_FMT_RGB332, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB555, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB565, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB555X, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB565X, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_BGR24, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB24, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_BGR32, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_RGB32, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_GREY, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YVU410, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YVU420, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUYV, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_UYVY, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUV422P, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUV411P, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_Y41P, TRUE, GST_V4L2_RAW},
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/* two planes -- one Y, one Cr + Cb interleaved */
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{V4L2_PIX_FMT_NV12, TRUE},
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{V4L2_PIX_FMT_NV12M, TRUE},
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{V4L2_PIX_FMT_NV21, TRUE},
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{V4L2_PIX_FMT_NV21M, TRUE},
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{V4L2_PIX_FMT_NV12, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV12M, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV21, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_NV21M, TRUE, GST_V4L2_RAW},
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/* The following formats are not defined in the V4L2 specification */
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{V4L2_PIX_FMT_YUV410, TRUE},
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{V4L2_PIX_FMT_YUV420, TRUE},
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{V4L2_PIX_FMT_YYUV, TRUE},
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{V4L2_PIX_FMT_HI240, TRUE},
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{V4L2_PIX_FMT_YUV410, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YUV420, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_YYUV, TRUE, GST_V4L2_RAW},
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{V4L2_PIX_FMT_HI240, TRUE, GST_V4L2_RAW},
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/* see http://www.siliconimaging.com/RGB%20Bayer.htm */
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#ifdef V4L2_PIX_FMT_SBGGR8
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{V4L2_PIX_FMT_SBGGR8, TRUE},
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{V4L2_PIX_FMT_SBGGR8, TRUE, GST_V4L2_CODEC},
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#endif
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/* compressed formats */
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{V4L2_PIX_FMT_MJPEG, TRUE},
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{V4L2_PIX_FMT_JPEG, TRUE},
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{V4L2_PIX_FMT_MJPEG, TRUE, GST_V4L2_CODEC},
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{V4L2_PIX_FMT_JPEG, TRUE, GST_V4L2_CODEC},
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#ifdef V4L2_PIX_FMT_PJPG
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{V4L2_PIX_FMT_PJPG, TRUE},
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{V4L2_PIX_FMT_PJPG, TRUE, GST_V4L2_CODEC},
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#endif
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{V4L2_PIX_FMT_DV, TRUE},
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{V4L2_PIX_FMT_MPEG, FALSE},
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{V4L2_PIX_FMT_DV, TRUE, GST_V4L2_TRANSPORT},
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{V4L2_PIX_FMT_MPEG, FALSE, GST_V4L2_TRANSPORT},
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#ifdef V4L2_PIX_FMT_MPEG4
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{V4L2_PIX_FMT_MPEG4, TRUE},
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{V4L2_PIX_FMT_MPEG4, TRUE, GST_V4L2_CODEC},
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#endif
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#ifdef V4L2_PIX_FMT_H263
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{V4L2_PIX_FMT_H263, TRUE},
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{V4L2_PIX_FMT_H263, TRUE, GST_V4L2_CODEC},
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#endif
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#ifdef V4L2_PIX_FMT_H264
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{V4L2_PIX_FMT_H264, TRUE},
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{V4L2_PIX_FMT_H264, TRUE, GST_V4L2_CODEC},
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#endif
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/* Vendor-specific formats */
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{V4L2_PIX_FMT_WNVA, TRUE},
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{V4L2_PIX_FMT_WNVA, TRUE, GST_V4L2_CODEC},
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#ifdef V4L2_PIX_FMT_SN9C10X
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{V4L2_PIX_FMT_SN9C10X, TRUE},
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{V4L2_PIX_FMT_SN9C10X, TRUE, GST_V4L2_CODEC},
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#endif
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#ifdef V4L2_PIX_FMT_PWC1
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{V4L2_PIX_FMT_PWC1, TRUE},
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{V4L2_PIX_FMT_PWC1, TRUE, GST_V4L2_CODEC},
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#endif
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#ifdef V4L2_PIX_FMT_PWC2
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{V4L2_PIX_FMT_PWC2, TRUE},
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{V4L2_PIX_FMT_PWC2, TRUE, GST_V4L2_CODEC},
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#endif
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#ifdef V4L2_PIX_FMT_YVYU
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{V4L2_PIX_FMT_YVYU, TRUE},
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{V4L2_PIX_FMT_YVYU, TRUE, GST_V4L2_RAW},
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#endif
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};
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@ -1515,36 +1524,67 @@ gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc)
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}
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static GstCaps *
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gst_v4l2_object_get_caps_helper (GstV4L2FormatFlags flags)
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{
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GstStructure *structure;
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GstCaps *caps;
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guint i;
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caps = gst_caps_new_empty ();
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for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
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if ((gst_v4l2_formats[i].flags & flags) == 0)
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continue;
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structure =
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gst_v4l2_object_v4l2fourcc_to_structure (gst_v4l2_formats[i].format);
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if (structure) {
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if (gst_v4l2_formats[i].dimensions) {
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
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"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
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"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 100, 1, NULL);
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}
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gst_caps_append_structure (caps, structure);
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}
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}
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return gst_caps_simplify (caps);
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}
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GstCaps *
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gst_v4l2_object_get_all_caps (void)
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{
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static GstCaps *caps = NULL;
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if (caps == NULL) {
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GstStructure *structure;
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guint i;
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caps = gst_caps_new_empty ();
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for (i = 0; i < GST_V4L2_FORMAT_COUNT; i++) {
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structure =
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gst_v4l2_object_v4l2fourcc_to_structure (gst_v4l2_formats[i].format);
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if (structure) {
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if (gst_v4l2_formats[i].dimensions) {
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
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"height", GST_TYPE_INT_RANGE, 1, GST_V4L2_MAX_SIZE,
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"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, 100, 1, NULL);
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}
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gst_caps_append_structure (caps, structure);
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}
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}
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}
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if (caps == NULL)
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caps = gst_v4l2_object_get_caps_helper (GST_V4L2_ALL);
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return gst_caps_ref (caps);
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}
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GstCaps *
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gst_v4l2_object_get_raw_caps (void)
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{
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static GstCaps *caps = NULL;
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if (caps == NULL)
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caps = gst_v4l2_object_get_caps_helper (GST_V4L2_RAW);
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return gst_caps_ref (caps);
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}
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GstCaps *
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gst_v4l2_object_get_codec_caps (void)
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{
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static GstCaps *caps = NULL;
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if (caps == NULL)
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caps = gst_v4l2_object_get_caps_helper (GST_V4L2_CODEC);
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return gst_caps_ref (caps);
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}
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/* if the device actually support multi-planar
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* we also allow to use plane in a contiguous manner
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@ -241,6 +241,10 @@ GValueArray* gst_v4l2_probe_get_values (GstPropertyProbe * probe, guint pro
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GstCaps* gst_v4l2_object_get_all_caps (void);
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GstCaps* gst_v4l2_object_get_raw_caps (void);
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GstCaps* gst_v4l2_object_get_codec_caps (void);
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GstStructure* gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc);
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gboolean gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps);
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