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zbar: port to 0.11

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This commit is contained in:
Wim Taymans 2011-10-08 12:07:58 +02:00
parent 4b27b7edd4
commit f954f50ed6
2 changed files with 41 additions and 48 deletions
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84
ext/zbar/gstzbar.c
View file

@ -109,14 +109,14 @@ static GstStaticPadTemplate gst_zbar_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV (ZBAR_YUV_CAPS))
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (ZBAR_YUV_CAPS))
);
static GstStaticPadTemplate gst_zbar_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV (ZBAR_YUV_CAPS))
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE (ZBAR_YUV_CAPS))
);
static void gst_zbar_finalize (GObject * object);
@ -132,32 +132,18 @@ static GstFlowReturn gst_zbar_transform_ip (GstBaseTransform * transform,
static gboolean gst_zbar_start (GstBaseTransform * base);
static gboolean gst_zbar_stop (GstBaseTransform * base);
GST_BOILERPLATE (GstZBar, gst_zbar, GstVideoFilter, GST_TYPE_VIDEO_FILTER);
static void
gst_zbar_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class, "Barcode detector",
"Filter/Analyzer/Video",
"Detect bar codes in the video streams",
"Stefan Kost <ensonic@users.sf.net>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_zbar_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_zbar_src_template));
}
#define gst_zbar_parent_class parent_class
G_DEFINE_TYPE (GstZBar, gst_zbar, GST_TYPE_VIDEO_FILTER);
static void
gst_zbar_class_init (GstZBarClass * g_class)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseTransformClass *trans_class;
gobject_class = G_OBJECT_CLASS (g_class);
gstelement_class = GST_ELEMENT_CLASS (g_class);
trans_class = GST_BASE_TRANSFORM_CLASS (g_class);
gobject_class->set_property = gst_zbar_set_property;
@ -176,6 +162,16 @@ gst_zbar_class_init (GstZBarClass * g_class)
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS));
gst_element_class_set_details_simple (gstelement_class, "Barcode detector",
"Filter/Analyzer/Video",
"Detect bar codes in the video streams",
"Stefan Kost <ensonic@users.sf.net>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_zbar_sink_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_zbar_src_template));
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_zbar_set_caps);
trans_class->transform_ip = GST_DEBUG_FUNCPTR (gst_zbar_transform_ip);
trans_class->start = GST_DEBUG_FUNCPTR (gst_zbar_start);
@ -183,7 +179,7 @@ gst_zbar_class_init (GstZBarClass * g_class)
}
static void
gst_zbar_init (GstZBar * zbar, GstZBarClass * g_class)
gst_zbar_init (GstZBar * zbar)
{
zbar->cache = DEFAULT_CACHE;
zbar->message = DEFAULT_MESSAGE;
@ -249,52 +245,53 @@ static gboolean
gst_zbar_set_caps (GstBaseTransform * base, GstCaps * incaps, GstCaps * outcaps)
{
GstZBar *zbar = GST_ZBAR (base);
GstStructure *structure;
gboolean res;
guint32 fourcc;
gint width, height;
GstVideoInfo info;
GST_DEBUG_OBJECT (zbar,
"set_caps: in %" GST_PTR_FORMAT " out %" GST_PTR_FORMAT, incaps, outcaps);
structure = gst_caps_get_structure (incaps, 0);
if (!gst_video_info_from_caps (&info, incaps))
goto invalid_caps;
res = gst_structure_get_int (structure, "width", &width);
res &= gst_structure_get_int (structure, "height", &height);
res &= gst_structure_get_fourcc (structure, "format", &fourcc);
zbar->info = info;
if (res) {
zbar->width = width;
zbar->height = height;
zbar->format = gst_video_format_from_fourcc (fourcc);
return TRUE;
/* ERRORS */
invalid_caps:
{
GST_ERROR_OBJECT (zbar, "invalid caps received");
return FALSE;
}
return res;
}
static GstFlowReturn
gst_zbar_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
{
GstZBar *zbar = GST_ZBAR (base);
guint8 *data;
guint rowstride;
gpointer data;
gint stride, height;
zbar_image_t *image;
GstVideoFrame frame;
const zbar_symbol_t *symbol;
int n;
if (base->passthrough)
goto done;
data = GST_BUFFER_DATA (outbuf);
gst_video_frame_map (&frame, &zbar->info, outbuf, GST_MAP_READ);
image = zbar_image_create ();
/* all formats we support start with an 8-bit Y plane. zbar doesn't need
* to know about the chroma plane(s) */
data = GST_VIDEO_FRAME_COMP_DATA (&frame, 0);
stride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 0);
height = GST_VIDEO_FRAME_HEIGHT (&frame);
zbar_image_set_format (image, GST_MAKE_FOURCC ('Y', '8', '0', '0'));
rowstride = gst_video_format_get_row_stride (zbar->format, 0, zbar->width);
zbar_image_set_size (image, rowstride, zbar->height);
zbar_image_set_data (image, (gpointer) data, rowstride * zbar->height, NULL);
zbar_image_set_size (image, stride, height);
zbar_image_set_data (image, (gpointer) data, stride * height, NULL);
/* scan the image for barcodes */
n = zbar_scan_image (zbar->scanner, image);
@ -330,6 +327,7 @@ gst_zbar_transform_ip (GstBaseTransform * base, GstBuffer * outbuf)
out:
/* clean up */
gst_video_frame_unmap (&frame);
zbar_image_scanner_recycle_image (zbar->scanner, image);
zbar_image_destroy (image);
@ -344,9 +342,7 @@ gst_zbar_start (GstBaseTransform * base)
{
GstZBar *zbar = GST_ZBAR (base);
zbar->width = 0;
zbar->height = 0;
zbar->format = GST_VIDEO_FORMAT_UNKNOWN;
gst_video_info_init (&zbar->info);
/* start the cache if enabled (e.g. for filtering dupes) */
zbar_image_scanner_enable_cache (zbar->scanner, zbar->cache);

5
ext/zbar/gstzbar.h
View file

@ -52,10 +52,7 @@ struct _GstZBar
GstVideoFilter videofilter;
/* format */
gint width;
gint height;
GstVideoFormat format;
GstVideoInfo info;
/* properties */
gboolean message;