#include "v4l2_calls.h"
#include "gstv4l2tuner.h"
#ifdef HAVE_XVIDEO
-#include "gstv4l2xoverlay.h"
+#include "gstv4l2videooverlay.h"
#endif
#include "gstv4l2colorbalance.h"
#include "gst/gst-i18n-plugin.h"
+#include <gst/video/video.h>
+
/* videodev2.h is not versioned and we can't easily check for the presence
* of enum values at compile time, but the V4L2_CAP_VIDEO_OUTPUT_OVERLAY define
* was added in the same commit as V4L2_FIELD_INTERLACED_{TB,BT} (b2787845) */
#endif
GST_DEBUG_CATEGORY_EXTERN (v4l2_debug);
+GST_DEBUG_CATEGORY_EXTERN (GST_CAT_PERFORMANCE);
#define GST_CAT_DEFAULT v4l2_debug
-
#define DEFAULT_PROP_DEVICE_NAME NULL
#define DEFAULT_PROP_DEVICE_FD -1
#define DEFAULT_PROP_FLAGS 0
#define DEFAULT_PROP_TV_NORM 0
#define DEFAULT_PROP_CHANNEL NULL
#define DEFAULT_PROP_FREQUENCY 0
+#define DEFAULT_PROP_IO_MODE GST_V4L2_IO_AUTO
enum
{
V4L2_STD_OBJECT_PROPS,
};
+G_LOCK_DEFINE_STATIC (probe_lock);
+
const GList *
gst_v4l2_probe_get_properties (GstPropertyProbe * probe)
{
GObjectClass *klass = G_OBJECT_GET_CLASS (probe);
static GList *list = NULL;
- /* well, not perfect, but better than no locking at all.
- * In the worst case we leak a list node, so who cares? */
- GST_CLASS_LOCK (GST_OBJECT_CLASS (klass));
+ G_LOCK (probe_lock);
if (!list) {
list = g_list_append (NULL, g_object_class_find_property (klass, "device"));
}
- GST_CLASS_UNLOCK (GST_OBJECT_CLASS (klass));
+ G_UNLOCK (probe_lock);
return list;
}
return v4l2_tv_norm;
}
+#define GST_TYPE_V4L2_IO_MODE (gst_v4l2_io_mode_get_type ())
+static GType
+gst_v4l2_io_mode_get_type (void)
+{
+ static GType v4l2_io_mode = 0;
+
+ if (!v4l2_io_mode) {
+ static const GEnumValue io_modes[] = {
+ {GST_V4L2_IO_AUTO, "GST_V4L2_IO_AUTO", "auto"},
+ {GST_V4L2_IO_RW, "GST_V4L2_IO_RW", "rw"},
+ {GST_V4L2_IO_MMAP, "GST_V4L2_IO_MMAP", "mmap"},
+ {GST_V4L2_IO_USERPTR, "GST_V4L2_IO_USERPTR", "userptr"},
+
+ {0, NULL, NULL}
+ };
+ v4l2_io_mode = g_enum_register_static ("GstV4l2IOMode", io_modes);
+ }
+ return v4l2_io_mode;
+}
+
void
gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
const char *default_device)
"video standard",
GST_TYPE_V4L2_TV_NORM, DEFAULT_PROP_TV_NORM,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstV4l2Src:io-mode
+ *
+ * IO Mode
+ */
+ g_object_class_install_property (gobject_class, PROP_IO_MODE,
+ g_param_spec_enum ("io-mode", "IO mode",
+ "I/O mode",
+ GST_TYPE_V4L2_IO_MODE, DEFAULT_PROP_IO_MODE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
GstV4l2Object *
v4l2object->video_fd = -1;
v4l2object->poll = gst_poll_new (TRUE);
- v4l2object->buffer = NULL;
+ v4l2object->active = FALSE;
v4l2object->videodev = g_strdup (default_device);
v4l2object->norms = NULL;
}
break;
#endif
+ case PROP_IO_MODE:
+ v4l2object->req_mode = g_value_get_enum (value);
+ break;
default:
return FALSE;
break;
case PROP_TV_NORM:
g_value_set_enum (value, v4l2object->tv_norm);
break;
+ case PROP_IO_MODE:
+ g_value_set_enum (value, v4l2object->req_mode);
+ break;
default:
return FALSE;
break;
}
gboolean
-gst_v4l2_object_start (GstV4l2Object * v4l2object)
+gst_v4l2_object_open (GstV4l2Object * v4l2object)
{
if (gst_v4l2_open (v4l2object))
gst_v4l2_set_defaults (v4l2object);
return FALSE;
#ifdef HAVE_XVIDEO
- gst_v4l2_xoverlay_start (v4l2object);
+ gst_v4l2_video_overlay_start (v4l2object);
#endif
return TRUE;
}
gboolean
-gst_v4l2_object_stop (GstV4l2Object * v4l2object)
+gst_v4l2_object_close (GstV4l2Object * v4l2object)
{
#ifdef HAVE_XVIDEO
- gst_v4l2_xoverlay_stop (v4l2object);
+ gst_v4l2_video_overlay_stop (v4l2object);
#endif
if (!gst_v4l2_close (v4l2object))
case V4L2_PIX_FMT_JPEG: /* JFIF JPEG */
structure = gst_structure_new ("image/jpeg", NULL);
break;
+ case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
+ case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
+ /* FIXME: get correct fourccs here */
+ 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:
+ /* FIXME: get correct fourccs here */
+ break;
+ case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
+ case V4L2_PIX_FMT_RGB555:
+ case V4L2_PIX_FMT_RGB565:
case V4L2_PIX_FMT_RGB24:
case V4L2_PIX_FMT_BGR24:
case V4L2_PIX_FMT_RGB32:
- case V4L2_PIX_FMT_BGR32:{
- guint depth = 0, bpp = 0;
-
- gint endianness = 0;
-
- guint32 r_mask = 0, b_mask = 0, g_mask = 0;
-
- switch (fourcc) {
- case V4L2_PIX_FMT_RGB332:
- bpp = depth = 8;
- endianness = G_BYTE_ORDER; /* 'like, whatever' */
- r_mask = 0xe0;
- g_mask = 0x1c;
- b_mask = 0x03;
- break;
- case V4L2_PIX_FMT_RGB555:
- case V4L2_PIX_FMT_RGB555X:
- bpp = 16;
- depth = 15;
- endianness =
- fourcc == V4L2_PIX_FMT_RGB555X ? G_BIG_ENDIAN : G_LITTLE_ENDIAN;
- r_mask = 0x7c00;
- g_mask = 0x03e0;
- b_mask = 0x001f;
- break;
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_RGB565X:
- bpp = depth = 16;
- endianness =
- fourcc == V4L2_PIX_FMT_RGB565X ? G_BIG_ENDIAN : G_LITTLE_ENDIAN;
- r_mask = 0xf800;
- g_mask = 0x07e0;
- b_mask = 0x001f;
- break;
- case V4L2_PIX_FMT_RGB24:
- bpp = depth = 24;
- endianness = G_BIG_ENDIAN;
- r_mask = 0xff0000;
- g_mask = 0x00ff00;
- b_mask = 0x0000ff;
- break;
- case V4L2_PIX_FMT_BGR24:
- bpp = depth = 24;
- endianness = G_BIG_ENDIAN;
- r_mask = 0x0000ff;
- g_mask = 0x00ff00;
- b_mask = 0xff0000;
- break;
- case V4L2_PIX_FMT_RGB32:
- bpp = depth = 32;
- endianness = G_BIG_ENDIAN;
- r_mask = 0xff000000;
- g_mask = 0x00ff0000;
- b_mask = 0x0000ff00;
- break;
- case V4L2_PIX_FMT_BGR32:
- bpp = depth = 32;
- endianness = G_BIG_ENDIAN;
- r_mask = 0x000000ff;
- g_mask = 0x0000ff00;
- b_mask = 0x00ff0000;
- break;
- default:
- g_assert_not_reached ();
- break;
- }
- structure = gst_structure_new ("video/x-raw-rgb",
- "bpp", G_TYPE_INT, bpp,
- "depth", G_TYPE_INT, depth,
- "red_mask", G_TYPE_INT, r_mask,
- "green_mask", G_TYPE_INT, g_mask,
- "blue_mask", G_TYPE_INT, b_mask,
- "endianness", G_TYPE_INT, endianness, NULL);
- break;
- }
- case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
- structure = gst_structure_new ("video/x-raw-gray",
- "bpp", G_TYPE_INT, 8, NULL);
- break;
- case V4L2_PIX_FMT_YYUV: /* 16 YUV 4:2:2 */
- case V4L2_PIX_FMT_HI240: /* 8 8-bit color */
- /* FIXME: get correct fourccs here */
- break;
+ case V4L2_PIX_FMT_BGR32:
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_YVU410:
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_YVU420:
case V4L2_PIX_FMT_UYVY:
+#if 0
case V4L2_PIX_FMT_Y41P:
+#endif
case V4L2_PIX_FMT_YUV422P:
#ifdef V4L2_PIX_FMT_YVYU
case V4L2_PIX_FMT_YVYU:
#endif
case V4L2_PIX_FMT_YUV411P:{
- guint32 fcc = 0;
+ GstVideoFormat format;
switch (fourcc) {
+ case V4L2_PIX_FMT_GREY: /* 8 Greyscale */
+ format = GST_VIDEO_FORMAT_GRAY8;
+ break;
+ case V4L2_PIX_FMT_RGB555:
+ format = GST_VIDEO_FORMAT_RGB15;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ format = GST_VIDEO_FORMAT_RGB16;
+ break;
+ case V4L2_PIX_FMT_RGB24:
+ format = GST_VIDEO_FORMAT_RGB;
+ break;
+ case V4L2_PIX_FMT_BGR24:
+ format = GST_VIDEO_FORMAT_BGR;
+ break;
+ case V4L2_PIX_FMT_RGB32:
+ format = GST_VIDEO_FORMAT_RGBx;
+ break;
+ case V4L2_PIX_FMT_BGR32:
+ format = GST_VIDEO_FORMAT_BGRx;
+ break;
case V4L2_PIX_FMT_NV12:
- fcc = GST_MAKE_FOURCC ('N', 'V', '1', '2');
+ format = GST_VIDEO_FORMAT_NV12;
break;
case V4L2_PIX_FMT_NV21:
- fcc = GST_MAKE_FOURCC ('N', 'V', '2', '1');
+ format = GST_VIDEO_FORMAT_NV21;
break;
case V4L2_PIX_FMT_YVU410:
- fcc = GST_MAKE_FOURCC ('Y', 'V', 'U', '9');
+ format = GST_VIDEO_FORMAT_YVU9;
break;
case V4L2_PIX_FMT_YUV410:
- fcc = GST_MAKE_FOURCC ('Y', 'U', 'V', '9');
+ format = GST_VIDEO_FORMAT_YUV9;
break;
case V4L2_PIX_FMT_YUV420:
- fcc = GST_MAKE_FOURCC ('I', '4', '2', '0');
+ format = GST_VIDEO_FORMAT_I420;
break;
case V4L2_PIX_FMT_YUYV:
- fcc = GST_MAKE_FOURCC ('Y', 'U', 'Y', '2');
+ format = GST_VIDEO_FORMAT_YUY2;
break;
case V4L2_PIX_FMT_YVU420:
- fcc = GST_MAKE_FOURCC ('Y', 'V', '1', '2');
+ format = GST_VIDEO_FORMAT_YV12;
break;
case V4L2_PIX_FMT_UYVY:
- fcc = GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y');
+ format = GST_VIDEO_FORMAT_UYVY;
break;
+#if 0
case V4L2_PIX_FMT_Y41P:
- fcc = GST_MAKE_FOURCC ('Y', '4', '1', 'P');
+ format = GST_VIDEO_FORMAT_Y41P;
break;
+#endif
case V4L2_PIX_FMT_YUV411P:
- fcc = GST_MAKE_FOURCC ('Y', '4', '1', 'B');
+ format = GST_VIDEO_FORMAT_Y41B;
break;
case V4L2_PIX_FMT_YUV422P:
- fcc = GST_MAKE_FOURCC ('Y', '4', '2', 'B');
+ format = GST_VIDEO_FORMAT_Y42B;
break;
#ifdef V4L2_PIX_FMT_YVYU
case V4L2_PIX_FMT_YVYU:
- fcc = GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U');
+ format = GST_VIDEO_FORMAT_YVYU;
break;
#endif
default:
g_assert_not_reached ();
break;
}
- structure = gst_structure_new ("video/x-raw-yuv",
- "format", GST_TYPE_FOURCC, fcc, NULL);
+ structure = gst_structure_new ("video/x-raw",
+ "format", G_TYPE_STRING, gst_video_format_to_string (format), NULL);
break;
}
case V4L2_PIX_FMT_DV:
* @fps_n/@fps_d: location for framerate
* @size: location for expected size of the frame or 0 if unknown
*/
-gboolean
+static gboolean
gst_v4l2_object_get_caps_info (GstV4l2Object * v4l2object, GstCaps * caps,
- struct v4l2_fmtdesc ** format, gint * w, gint * h,
- gboolean * interlaced, guint * fps_n, guint * fps_d, guint * size)
+ struct v4l2_fmtdesc **format, GstVideoInfo * info)
{
GstStructure *structure;
- const GValue *framerate;
guint32 fourcc;
const gchar *mimetype;
- guint outsize;
+ struct v4l2_fmtdesc *fmt;
/* default unknown values */
fourcc = 0;
- outsize = 0;
structure = gst_caps_get_structure (caps, 0);
mimetype = gst_structure_get_name (structure);
- if (strcmp (mimetype, "video/mpegts") == 0) {
- fourcc = V4L2_PIX_FMT_MPEG;
- *fps_n = 0;
- *fps_d = 1;
- goto done;
- }
-
- if (!gst_structure_get_int (structure, "width", w))
- return FALSE;
-
- if (!gst_structure_get_int (structure, "height", h))
- return FALSE;
-
- if (!gst_structure_get_boolean (structure, "interlaced", interlaced))
- *interlaced = FALSE;
+ if (g_str_equal (mimetype, "video/x-raw")) {
+ /* raw caps, parse into video info */
+ if (!gst_video_info_from_caps (info, caps))
+ goto invalid_format;
- framerate = gst_structure_get_value (structure, "framerate");
- if (!framerate)
- return FALSE;
-
- *fps_n = gst_value_get_fraction_numerator (framerate);
- *fps_d = gst_value_get_fraction_denominator (framerate);
-
- if (!strcmp (mimetype, "video/x-raw-yuv")) {
- gst_structure_get_fourcc (structure, "format", &fourcc);
-
- switch (fourcc) {
- case GST_MAKE_FOURCC ('I', '4', '2', '0'):
- case GST_MAKE_FOURCC ('I', 'Y', 'U', 'V'):
+ switch (GST_VIDEO_INFO_FORMAT (info)) {
+ case GST_VIDEO_FORMAT_I420:
fourcc = V4L2_PIX_FMT_YUV420;
- outsize = GST_ROUND_UP_4 (*w) * GST_ROUND_UP_2 (*h);
- outsize += 2 * ((GST_ROUND_UP_8 (*w) / 2) * (GST_ROUND_UP_2 (*h) / 2));
break;
- case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
+ case GST_VIDEO_FORMAT_YUY2:
fourcc = V4L2_PIX_FMT_YUYV;
- outsize = (GST_ROUND_UP_2 (*w) * 2) * *h;
break;
- case GST_MAKE_FOURCC ('Y', '4', '1', 'P'):
+#if 0
+ case GST_VIDEO_FORMAT_Y41P:
fourcc = V4L2_PIX_FMT_Y41P;
- outsize = (GST_ROUND_UP_2 (*w) * 2) * *h;
break;
- case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
+#endif
+ case GST_VIDEO_FORMAT_UYVY:
fourcc = V4L2_PIX_FMT_UYVY;
- outsize = (GST_ROUND_UP_2 (*w) * 2) * *h;
break;
- case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
+ case GST_VIDEO_FORMAT_YV12:
fourcc = V4L2_PIX_FMT_YVU420;
- outsize = GST_ROUND_UP_4 (*w) * GST_ROUND_UP_2 (*h);
- outsize += 2 * ((GST_ROUND_UP_8 (*w) / 2) * (GST_ROUND_UP_2 (*h) / 2));
break;
- case GST_MAKE_FOURCC ('Y', '4', '1', 'B'):
+ case GST_VIDEO_FORMAT_Y41B:
fourcc = V4L2_PIX_FMT_YUV411P;
- outsize = GST_ROUND_UP_4 (*w) * *h;
- outsize += 2 * ((GST_ROUND_UP_8 (*w) / 4) * *h);
break;
- case GST_MAKE_FOURCC ('Y', '4', '2', 'B'):
+ case GST_VIDEO_FORMAT_Y42B:
fourcc = V4L2_PIX_FMT_YUV422P;
- outsize = GST_ROUND_UP_4 (*w) * *h;
- outsize += 2 * ((GST_ROUND_UP_8 (*w) / 2) * *h);
break;
- case GST_MAKE_FOURCC ('N', 'V', '1', '2'):
+ case GST_VIDEO_FORMAT_NV12:
fourcc = V4L2_PIX_FMT_NV12;
- outsize = GST_ROUND_UP_4 (*w) * GST_ROUND_UP_2 (*h);
- outsize += (GST_ROUND_UP_4 (*w) * *h) / 2;
break;
- case GST_MAKE_FOURCC ('N', 'V', '2', '1'):
+ case GST_VIDEO_FORMAT_NV21:
fourcc = V4L2_PIX_FMT_NV21;
- outsize = GST_ROUND_UP_4 (*w) * GST_ROUND_UP_2 (*h);
- outsize += (GST_ROUND_UP_4 (*w) * *h) / 2;
break;
#ifdef V4L2_PIX_FMT_YVYU
- case GST_MAKE_FOURCC ('Y', 'V', 'Y', 'U'):
+ case GST_VIDEO_FORMAT_YVYU:
fourcc = V4L2_PIX_FMT_YVYU;
- outsize = (GST_ROUND_UP_2 (*w) * 2) * *h;
break;
#endif
- }
- } else if (!strcmp (mimetype, "video/x-raw-rgb")) {
- gint depth, endianness, r_mask;
-
- gst_structure_get_int (structure, "depth", &depth);
- gst_structure_get_int (structure, "endianness", &endianness);
- gst_structure_get_int (structure, "red_mask", &r_mask);
-
- switch (depth) {
- case 8:
- fourcc = V4L2_PIX_FMT_RGB332;
+ case GST_VIDEO_FORMAT_RGB15:
+ fourcc = V4L2_PIX_FMT_RGB555;
+ break;
+ case GST_VIDEO_FORMAT_RGB16:
+ fourcc = V4L2_PIX_FMT_RGB565;
break;
- case 15:
- fourcc = (endianness == G_LITTLE_ENDIAN) ?
- V4L2_PIX_FMT_RGB555 : V4L2_PIX_FMT_RGB555X;
+ case GST_VIDEO_FORMAT_RGB:
+ fourcc = V4L2_PIX_FMT_RGB24;
break;
- case 16:
- fourcc = (endianness == G_LITTLE_ENDIAN) ?
- V4L2_PIX_FMT_RGB565 : V4L2_PIX_FMT_RGB565X;
+ case GST_VIDEO_FORMAT_BGR:
+ fourcc = V4L2_PIX_FMT_BGR24;
break;
- case 24:
- fourcc = (r_mask == 0xFF) ? V4L2_PIX_FMT_BGR24 : V4L2_PIX_FMT_RGB24;
+ case GST_VIDEO_FORMAT_RGBx:
+ case GST_VIDEO_FORMAT_RGBA:
+ fourcc = V4L2_PIX_FMT_RGB32;
break;
- case 32:
- fourcc = (r_mask == 0xFF) ? V4L2_PIX_FMT_BGR32 : V4L2_PIX_FMT_RGB32;
+ case GST_VIDEO_FORMAT_BGRx:
+ case GST_VIDEO_FORMAT_BGRA:
+ fourcc = V4L2_PIX_FMT_BGR32;
+ break;
+ case GST_VIDEO_FORMAT_GRAY8:
+ fourcc = V4L2_PIX_FMT_GREY;
+ default:
break;
}
- } else if (strcmp (mimetype, "video/x-dv") == 0) {
- fourcc = V4L2_PIX_FMT_DV;
- } else if (strcmp (mimetype, "image/jpeg") == 0) {
- fourcc = V4L2_PIX_FMT_JPEG;
+ } else {
+ gboolean dimensions = TRUE;
+
+ /* no video caps, construct videoinfo ourselves */
+ gst_video_info_init (info);
+
+ if (g_str_equal (mimetype, "video/mpegts")) {
+ fourcc = V4L2_PIX_FMT_MPEG;
+ dimensions = FALSE;
+ } else if (g_str_equal (mimetype, "video/x-dv")) {
+ fourcc = V4L2_PIX_FMT_DV;
+ } else if (g_str_equal (mimetype, "image/jpeg")) {
+ fourcc = V4L2_PIX_FMT_JPEG;
#ifdef V4L2_PIX_FMT_SBGGR8
- } else if (strcmp (mimetype, "video/x-raw-bayer") == 0) {
- fourcc = V4L2_PIX_FMT_SBGGR8;
+ } else if (g_str_equal (mimetype, "video/x-raw-bayer")) {
+ fourcc = V4L2_PIX_FMT_SBGGR8;
#endif
#ifdef V4L2_PIX_FMT_SN9C10X
- } else if (strcmp (mimetype, "video/x-sonix") == 0) {
- fourcc = V4L2_PIX_FMT_SN9C10X;
+ } else if (g_str_equal (mimetype, "video/x-sonix")) {
+ fourcc = V4L2_PIX_FMT_SN9C10X;
#endif
#ifdef V4L2_PIX_FMT_PWC1
- } else if (strcmp (mimetype, "video/x-pwc1") == 0) {
- fourcc = V4L2_PIX_FMT_PWC1;
+ } else if (g_str_equal (mimetype, "video/x-pwc1")) {
+ fourcc = V4L2_PIX_FMT_PWC1;
#endif
#ifdef V4L2_PIX_FMT_PWC2
- } else if (strcmp (mimetype, "video/x-pwc2") == 0) {
- fourcc = V4L2_PIX_FMT_PWC2;
+ } else if (g_str_equal (mimetype, "video/x-pwc2")) {
+ fourcc = V4L2_PIX_FMT_PWC2;
+ }
#endif
- } else if (strcmp (mimetype, "video/x-raw-gray") == 0) {
- fourcc = V4L2_PIX_FMT_GREY;
+
+ if (dimensions) {
+ gboolean interlaced;
+
+ if (!gst_structure_get_int (structure, "width", &info->width))
+ goto no_width;
+
+ if (!gst_structure_get_int (structure, "height", &info->height))
+ goto no_height;
+
+ if (!gst_structure_get_boolean (structure, "interlaced", &interlaced))
+ interlaced = FALSE;
+ if (interlaced)
+ info->flags |= GST_VIDEO_FLAG_INTERLACED;
+
+ if (!gst_structure_get_fraction (structure, "framerate", &info->fps_n,
+ &info->fps_d))
+ goto no_framerate;
+ }
}
if (fourcc == 0)
- return FALSE;
+ goto unhandled_format;
-done:
- *format = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
- *size = outsize;
+ fmt = gst_v4l2_object_get_format_from_fourcc (v4l2object, fourcc);
+ if (fmt == NULL)
+ goto unsupported_format;
+
+ *format = fmt;
return TRUE;
+
+ /* ERRORS */
+no_width:
+ {
+ GST_DEBUG_OBJECT (v4l2object, "no width");
+ return FALSE;
+ }
+no_height:
+ {
+ GST_DEBUG_OBJECT (v4l2object, "no height");
+ return FALSE;
+ }
+no_framerate:
+ {
+ GST_DEBUG_OBJECT (v4l2object, "no framerate");
+ return FALSE;
+ }
+invalid_format:
+ {
+ GST_DEBUG_OBJECT (v4l2object, "invalid format");
+ return FALSE;
+ }
+unhandled_format:
+ {
+ GST_DEBUG_OBJECT (v4l2object, "unhandled format");
+ return FALSE;
+ }
+unsupported_format:
+ {
+ GST_DEBUG_OBJECT (v4l2object, "unsupported format");
+ return FALSE;
+ }
}
return FALSE;
}
+static gboolean
+gst_v4l2_object_setup_pool (GstV4l2Object * v4l2object, GstCaps * caps)
+{
+ GstV4l2IOMode mode;
+
+ GST_DEBUG_OBJECT (v4l2object->element, "initializing the capture system");
+
+ GST_V4L2_CHECK_OPEN (v4l2object);
+ GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
+
+ /* find transport */
+ mode = v4l2object->req_mode;
+
+ if (v4l2object->vcap.capabilities & V4L2_CAP_READWRITE) {
+ if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
+ mode = GST_V4L2_IO_RW;
+ } else if (v4l2object->req_mode == GST_V4L2_IO_RW)
+ goto method_not_supported;
+
+ if (v4l2object->vcap.capabilities & V4L2_CAP_STREAMING) {
+ if (v4l2object->req_mode == GST_V4L2_IO_AUTO)
+ mode = GST_V4L2_IO_MMAP;
+ } else if (v4l2object->req_mode == GST_V4L2_IO_MMAP)
+ goto method_not_supported;
+
+ /* if still no transport selected, error out */
+ if (mode == GST_V4L2_IO_AUTO)
+ goto no_supported_capture_method;
+
+ GST_INFO_OBJECT (v4l2object->element, "accessing buffers via mode %d", mode);
+ v4l2object->mode = mode;
+
+ /* Map the buffers */
+ GST_LOG_OBJECT (v4l2object->element, "initiating buffer pool");
+
+ if (!(v4l2object->pool = gst_v4l2_buffer_pool_new (v4l2object, caps)))
+ goto buffer_pool_new_failed;
+
+ GST_V4L2_SET_ACTIVE (v4l2object);
+
+ return TRUE;
+
+ /* ERRORS */
+buffer_pool_new_failed:
+ {
+ GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
+ (_("Could not map buffers from device '%s'"),
+ v4l2object->videodev),
+ ("Failed to create buffer pool: %s", g_strerror (errno)));
+ return FALSE;
+ }
+method_not_supported:
+ {
+ GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
+ (_("The driver of device '%s' does not support the IO method %d"),
+ v4l2object->videodev, mode), (NULL));
+ return FALSE;
+ }
+no_supported_capture_method:
+ {
+ GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, READ,
+ (_("The driver of device '%s' does not support any known IO "
+ "method."), v4l2object->videodev), (NULL));
+ return FALSE;
+ }
+}
+
+
+/* Note about fraction simplification
+ * * n1/d1 == n2/d2 is also written as n1 == ( n2 * d1 ) / d2
+ * */
+#define fractions_are_equal(n1,d1,n2,d2) ((n1) == gst_util_uint64_scale_int((n2), (d1), (d2)))
gboolean
-gst_v4l2_object_set_format (GstV4l2Object * v4l2object, guint32 pixelformat,
- guint32 width, guint32 height, gboolean interlaced)
+gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
{
gint fd = v4l2object->video_fd;
struct v4l2_format format;
+ struct v4l2_streamparm streamparm;
enum v4l2_field field;
-
- if (interlaced) {
+ guint32 pixelformat;
+ struct v4l2_fmtdesc *fmtdesc;
+ GstVideoInfo info;
+ gint width, height, fps_n, fps_d, stride;
+
+ if (!gst_v4l2_object_get_caps_info (v4l2object, caps, &fmtdesc, &info))
+ goto invalid_caps;
+
+ pixelformat = fmtdesc->pixelformat;
+ width = GST_VIDEO_INFO_WIDTH (&info);
+ height = GST_VIDEO_INFO_HEIGHT (&info);
+ fps_n = GST_VIDEO_INFO_FPS_N (&info);
+ fps_d = GST_VIDEO_INFO_FPS_D (&info);
+ stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
+
+ if (info.flags & GST_VIDEO_FLAG_INTERLACED) {
GST_DEBUG_OBJECT (v4l2object->element, "interlaced video");
/* ideally we would differentiate between types of interlaced video
* but there is not sufficient information in the caps..
field = V4L2_FIELD_NONE;
}
- GST_DEBUG_OBJECT (v4l2object->element, "Setting format to %dx%d, format "
- "%" GST_FOURCC_FORMAT, width, height, GST_FOURCC_ARGS (pixelformat));
+ GST_DEBUG_OBJECT (v4l2object->element, "Desired format %dx%d, format "
+ "%" GST_FOURCC_FORMAT " stride: %d", width, height,
+ GST_FOURCC_ARGS (pixelformat), stride);
GST_V4L2_CHECK_OPEN (v4l2object);
GST_V4L2_CHECK_NOT_ACTIVE (v4l2object);
/* Only unconditionally accept mpegts for sources */
if ((v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
(pixelformat == GST_MAKE_FOURCC ('M', 'P', 'E', 'G')))
- return TRUE;
+ goto done;
memset (&format, 0x00, sizeof (struct v4l2_format));
format.type = v4l2object->type;
if (v4l2_ioctl (fd, VIDIOC_G_FMT, &format) < 0)
goto get_fmt_failed;
- if (format.type == v4l2object->type &&
- format.fmt.pix.width == width &&
- format.fmt.pix.height == height &&
- format.fmt.pix.pixelformat == pixelformat &&
- format.fmt.pix.field == field) {
- /* Nothing to do. We want to succeed immediately
- * here because setting the same format back
- * can still fail due to EBUSY. By short-circuiting
- * here, we allow pausing and re-playing pipelines
- * with changed caps, as long as the changed caps
- * do not change the webcam's format. Otherwise,
- * any caps change would require us to go to NULL
- * state to close the device and set format.
- */
- return TRUE;
+ GST_DEBUG_OBJECT (v4l2object->element, "Got format to %dx%d, format "
+ "%" GST_FOURCC_FORMAT " bytesperline %d, colorspace %d",
+ format.fmt.pix.width, format.fmt.pix.height,
+ GST_FOURCC_ARGS (format.fmt.pix.pixelformat), format.fmt.pix.bytesperline,
+ format.fmt.pix.colorspace);
+
+ if (format.type != v4l2object->type ||
+ format.fmt.pix.width != width ||
+ format.fmt.pix.height != height ||
+ format.fmt.pix.pixelformat != pixelformat ||
+ format.fmt.pix.field != field || format.fmt.pix.bytesperline != stride) {
+ /* something different, set the format */
+ GST_DEBUG_OBJECT (v4l2object->element, "Setting format to %dx%d, format "
+ "%" GST_FOURCC_FORMAT " bytesperline %d", width, height,
+ GST_FOURCC_ARGS (pixelformat), stride);
+
+ format.type = v4l2object->type;
+ format.fmt.pix.width = width;
+ format.fmt.pix.height = height;
+ format.fmt.pix.pixelformat = pixelformat;
+ format.fmt.pix.field = field;
+ /* try to ask our prefered stride */
+ format.fmt.pix.bytesperline = stride;
+
+ if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0)
+ goto set_fmt_failed;
+
+ GST_DEBUG_OBJECT (v4l2object->element, "Got format to %dx%d, format "
+ "%" GST_FOURCC_FORMAT " stride %d", format.fmt.pix.width,
+ format.fmt.pix.height, GST_FOURCC_ARGS (format.fmt.pix.pixelformat),
+ format.fmt.pix.bytesperline);
+
+ if (format.fmt.pix.width != width || format.fmt.pix.height != height)
+ goto invalid_dimensions;
+
+ if (format.fmt.pix.pixelformat != pixelformat)
+ goto invalid_pixelformat;
}
- format.type = v4l2object->type;
- format.fmt.pix.width = width;
- format.fmt.pix.height = height;
- format.fmt.pix.pixelformat = pixelformat;
- format.fmt.pix.field = field;
+ /* figure out the frame layout */
+ v4l2object->bytesperline = format.fmt.pix.bytesperline;
+ v4l2object->sizeimage = format.fmt.pix.sizeimage;
+
+ GST_DEBUG_OBJECT (v4l2object->element, "Got sizeimage %u",
+ v4l2object->sizeimage);
+
+ /* Is there a reason we require the caller to always specify a framerate? */
+ GST_DEBUG_OBJECT (v4l2object->element, "Desired framerate: %u/%u", fps_n,
+ fps_d);
+
+ memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
+ streamparm.type = v4l2object->type;
+
+ if (v4l2_ioctl (fd, VIDIOC_G_PARM, &streamparm) < 0)
+ goto get_parm_failed;
+
+ GST_VIDEO_INFO_FPS_N (&info) =
+ streamparm.parm.capture.timeperframe.denominator;
+ GST_VIDEO_INFO_FPS_D (&info) = streamparm.parm.capture.timeperframe.numerator;
+
+ if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ GST_DEBUG_OBJECT (v4l2object->element, "Got framerate: %u/%u",
+ streamparm.parm.capture.timeperframe.denominator,
+ streamparm.parm.capture.timeperframe.numerator);
+
+ /* We used to skip frame rate setup if the camera was already setup
+ * with the requested frame rate. This breaks some cameras though,
+ * causing them to not output data (several models of Thinkpad cameras
+ * have this problem at least).
+ * So, don't skip. */
+ GST_LOG_OBJECT (v4l2object->element, "Setting framerate to %u/%u", fps_n,
+ fps_d);
+ /* We want to change the frame rate, so check whether we can. Some cheap USB
+ * cameras don't have the capability */
+ if ((streamparm.parm.capture.capability & V4L2_CAP_TIMEPERFRAME) == 0) {
+ GST_DEBUG_OBJECT (v4l2object->element,
+ "Not setting framerate (not supported)");
+ goto done;
+ }
+
+ /* Note: V4L2 wants the frame interval, we have the frame rate */
+ streamparm.parm.capture.timeperframe.numerator = fps_d;
+ streamparm.parm.capture.timeperframe.denominator = fps_n;
- if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0) {
- goto set_fmt_failed;
+ /* some cheap USB cam's won't accept any change */
+ if (v4l2_ioctl (fd, VIDIOC_S_PARM, &streamparm) < 0)
+ goto set_parm_failed;
+
+ /* get new values */
+ fps_d = streamparm.parm.capture.timeperframe.numerator;
+ fps_n = streamparm.parm.capture.timeperframe.denominator;
+
+ GST_INFO_OBJECT (v4l2object->element, "Set framerate to %u/%u", fps_n,
+ fps_d);
+
+ GST_VIDEO_INFO_FPS_N (&info) = fps_n;
+ GST_VIDEO_INFO_FPS_D (&info) = fps_d;
}
- if (format.fmt.pix.width != width || format.fmt.pix.height != height)
- goto invalid_dimensions;
+done:
+ /* if we have a framerate pre-calculate duration */
+ if (fps_n > 0 && fps_d > 0) {
+ v4l2object->duration = gst_util_uint64_scale_int (GST_SECOND, fps_d, fps_n);
+ } else {
+ v4l2object->duration = GST_CLOCK_TIME_NONE;
+ }
+ v4l2object->info = info;
+ v4l2object->fmtdesc = fmtdesc;
- if (format.fmt.pix.pixelformat != pixelformat)
- goto invalid_pixelformat;
+ /* now configure ther pools */
+ if (!gst_v4l2_object_setup_pool (v4l2object, caps))
+ goto pool_failed;
return TRUE;
/* ERRORS */
+invalid_caps:
+ {
+ GST_DEBUG_OBJECT (v4l2object->element, "can't parse caps %" GST_PTR_FORMAT,
+ caps);
+ return FALSE;
+ }
get_fmt_failed:
{
GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
GST_FOURCC_ARGS (format.fmt.pix.pixelformat)));
return FALSE;
}
+get_parm_failed:
+ {
+ /* it's possible that this call is not supported */
+ if (errno != EINVAL) {
+ GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
+ (_("Could not get parameters on device '%s'"),
+ v4l2object->videodev), GST_ERROR_SYSTEM);
+ }
+ goto done;
+ }
+set_parm_failed:
+ {
+ GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, SETTINGS,
+ (_("Video device did not accept new frame rate setting.")),
+ GST_ERROR_SYSTEM);
+ goto done;
+ }
+pool_failed:
+ {
+ GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS,
+ (_("Video device could not create buffer pool.")), GST_ERROR_SYSTEM);
+ return FALSE;
+ }
}
gboolean
-gst_v4l2_object_start_streaming (GstV4l2Object * v4l2object)
+gst_v4l2_object_unlock (GstV4l2Object * v4l2object)
{
- if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_STREAMON,
- &(v4l2object->type)) < 0) {
- GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, OPEN_READ,
- (_("Error starting streaming on device '%s'."), v4l2object->videodev),
- GST_ERROR_SYSTEM);
- return FALSE;
+ GST_LOG_OBJECT (v4l2object->element, "flush poll");
+ gst_poll_set_flushing (v4l2object->poll, TRUE);
+
+ return TRUE;
+}
+
+gboolean
+gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object)
+{
+ GST_LOG_OBJECT (v4l2object->element, "flush stop poll");
+ gst_poll_set_flushing (v4l2object->poll, FALSE);
+
+ return TRUE;
+}
+
+gboolean
+gst_v4l2_object_stop (GstV4l2Object * v4l2object)
+{
+ GST_DEBUG_OBJECT (v4l2object->element, "stopping");
+
+ if (!GST_V4L2_IS_OPEN (v4l2object))
+ goto done;
+ if (!GST_V4L2_IS_ACTIVE (v4l2object))
+ goto done;
+
+ if (v4l2object->pool) {
+ GST_DEBUG_OBJECT (v4l2object->element, "deactivating pool");
+ gst_buffer_pool_set_active (GST_BUFFER_POOL_CAST (v4l2object->pool), FALSE);
+ gst_object_unref (v4l2object->pool);
+ v4l2object->pool = NULL;
}
+
+ GST_V4L2_SET_INACTIVE (v4l2object);
+
+done:
return TRUE;
}
+#if 0
+static GstFlowReturn
+gst_v4l2_object_get_mmap (GstV4l2Object * v4l2object, GstBuffer ** buf)
+{
+ GstFlowReturn res;
+#define NUM_TRIALS 50
+ GstBufferPool *pool;
+ gint32 trials = NUM_TRIALS;
+ GstBuffer *pool_buffer;
+ gboolean need_copy;
+
+ pool = v4l2object->pool;
+ if (!pool)
+ goto no_buffer_pool;
+
+ GST_DEBUG_OBJECT (v4l2object->element, "grab frame");
+
+ for (;;) {
+ if ((res = gst_v4l2_object_poll (v4l2object)) != GST_FLOW_OK)
+ goto poll_error;
+
+ res = gst_buffer_pool_acquire_buffer (pool, &pool_buffer, NULL);
+ if (res != GST_FLOW_OK)
+ goto no_buffer;
+
+ if (v4l2object->size > 0) {
+ gsize size = gst_buffer_get_size (pool_buffer);
+
+ /* if size does not match what we expected, try again */
+ if (size != v4l2object->size) {
+ GST_ELEMENT_WARNING (v4l2object->element, RESOURCE, READ,
+ (_("Got unexpected frame size of %u instead of %u."),
+ size, v4l2object->size), (NULL));
+ gst_buffer_unref (pool_buffer);
+ goto no_buffer;
+ }
+ }
+ /* when we get here all is fine */
+ break;
+
+ no_buffer:
+ GST_WARNING_OBJECT (v4l2object->element, "trials=%d", trials);
+
+ /* if the sync() got interrupted, we can retry */
+ switch (errno) {
+ case EINVAL:
+ case ENOMEM:
+ /* fatal */
+ return GST_FLOW_ERROR;
+
+ case EAGAIN:
+ case EIO:
+ case EINTR:
+ default:
+ /* try again, until too many trials */
+ break;
+ }
+
+ /* check nr. of attempts to capture */
+ if (--trials == -1) {
+ goto too_many_trials;
+ }
+ }
+
+
+ /* if we are handing out the last buffer in the pool, we need to make a
+ * copy and bring the buffer back in the pool. */
+ need_copy = v4l2object->always_copy
+ || !gst_v4l2_buffer_pool_available_buffers (pool);
+
+ if (G_UNLIKELY (need_copy)) {
+ if (!v4l2object->always_copy) {
+ GST_CAT_LOG_OBJECT (GST_CAT_PERFORMANCE, v4l2object->element,
+ "running out of buffers, making a copy to reuse current one");
+ }
+ *buf = gst_buffer_copy (pool_buffer);
+ /* this will requeue */
+ gst_buffer_unref (pool_buffer);
+ } else {
+ *buf = pool_buffer;
+ }
+
+ return GST_FLOW_OK;
+
+ /* ERRORS */
+no_buffer_pool:
+ {
+ GST_DEBUG_OBJECT (v4l2object->element, "no buffer pool");
+ return GST_FLOW_WRONG_STATE;
+ }
+poll_error:
+ {
+ return res;
+ }
+too_many_trials:
+ {
+ GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, FAILED,
+ (_("Failed trying to get video frames from device '%s'."),
+ v4l2object->videodev),
+ (_("Failed after %d tries. device %s. system error: %s"),
+ NUM_TRIALS, v4l2object->videodev, g_strerror (errno)));
+ return GST_FLOW_ERROR;
+ }
+}
+#endif
+
gboolean
-gst_v4l2_object_stop_streaming (GstV4l2Object * v4l2object)
+gst_v4l2_object_copy (GstV4l2Object * v4l2object, GstBuffer * dest,
+ GstBuffer * src)
{
- if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_STREAMOFF,
- &(v4l2object->type)) < 0) {
- GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, OPEN_READ,
- (_("Error stopping streaming on device '%s'."), v4l2object->videodev),
- GST_ERROR_SYSTEM);
- return FALSE;
+ guint8 *data;
+ gsize size;
+
+ if (v4l2object->info.finfo) {
+ GstVideoFrame src_frame, dest_frame;
+
+ GST_DEBUG_OBJECT (v4l2object->element, "copy video frame");
+
+ /* we have raw video, use videoframe copy to get strides right */
+ if (!gst_video_frame_map (&src_frame, &v4l2object->info, src, GST_MAP_READ))
+ goto invalid_buffer;
+
+ if (!gst_video_frame_map (&dest_frame, &v4l2object->info, dest,
+ GST_MAP_WRITE)) {
+ gst_video_frame_unmap (&src_frame);
+ goto invalid_buffer;
+ }
+
+ gst_video_frame_copy (&dest_frame, &src_frame);
+
+ gst_video_frame_unmap (&src_frame);
+ gst_video_frame_unmap (&dest_frame);
+ } else {
+ GST_DEBUG_OBJECT (v4l2object->element, "copy raw bytes");
+ data = gst_buffer_map (src, &size, NULL, GST_MAP_READ);
+ gst_buffer_fill (dest, 0, data, size);
+ gst_buffer_unmap (src, data, size);
}
+ GST_CAT_LOG_OBJECT (GST_CAT_PERFORMANCE, v4l2object->element,
+ "slow copy into buffer %p", dest);
+
return TRUE;
+
+ /* ERRORS */
+invalid_buffer:
+ {
+ /* No Window available to put our image into */
+ GST_WARNING_OBJECT (v4l2object->element, "could not map image");
+ return FALSE;
+ }
}
projects / platform / upstream / gstreamer.git / blobdiff