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v4l2: cleanup and commenting

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Remove newlines inserted by gst-indent once. Remove unused var from instance
struct. Add comments. Add another #define for default property value.
This commit is contained in:
Stefan Kost 2009-05-26 16:20:35 +03:00
parent 501f4fe13e
commit 751f7fc5f8
2 changed files with 17 additions and 48 deletions
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56
sys/v4l2/gstv4l2src.c
View file

@ -57,16 +57,18 @@
#include "gstv4l2vidorient.h" #include "gstv4l2vidorient.h"
static const GstElementDetails gst_v4l2src_details = static const GstElementDetails gst_v4l2src_details =
GST_ELEMENT_DETAILS ("Video (video4linux2/raw) Source", GST_ELEMENT_DETAILS ("Video (video4linux2) Source",
"Source/Video", "Source/Video",
"Reads raw frames from a video4linux2 (BT8x8) device", "Reads frames from a video4linux2 (BT8x8) device",
"Ronald Bultje <rbultje@ronald.bitfreak.net>," "Ronald Bultje <rbultje@ronald.bitfreak.net>,"
" Edgard Lima <edgard.lima@indt.org.br>"); " Edgard Lima <edgard.lima@indt.org.br>,"
" Stefan Kost <ensonic@users.sf.net>");
GST_DEBUG_CATEGORY (v4l2src_debug); GST_DEBUG_CATEGORY (v4l2src_debug);
#define GST_CAT_DEFAULT v4l2src_debug #define GST_CAT_DEFAULT v4l2src_debug
#define DEFAULT_PROP_ALWAYS_COPY TRUE #define PROP_DEF_QUEUE_SIZE 2
#define PROP_DEF_ALWAYS_COPY TRUE
enum enum
{ {
@ -234,28 +236,18 @@ GST_BOILERPLATE_FULL (GstV4l2Src, gst_v4l2src, GstPushSrc, GST_TYPE_PUSH_SRC,
gst_v4l2src_init_interfaces); gst_v4l2src_init_interfaces);
static void gst_v4l2src_dispose (GObject * object); static void gst_v4l2src_dispose (GObject * object);
static void gst_v4l2src_finalize (GstV4l2Src * v4l2src); static void gst_v4l2src_finalize (GstV4l2Src * v4l2src);
/* basesrc methods */ /* basesrc methods */
static gboolean gst_v4l2src_start (GstBaseSrc * src); static gboolean gst_v4l2src_start (GstBaseSrc * src);
static gboolean gst_v4l2src_unlock (GstBaseSrc * src); static gboolean gst_v4l2src_unlock (GstBaseSrc * src);
static gboolean gst_v4l2src_unlock_stop (GstBaseSrc * src); static gboolean gst_v4l2src_unlock_stop (GstBaseSrc * src);
static gboolean gst_v4l2src_stop (GstBaseSrc * src); static gboolean gst_v4l2src_stop (GstBaseSrc * src);
static gboolean gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps); static gboolean gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps);
static GstCaps *gst_v4l2src_get_caps (GstBaseSrc * src); static GstCaps *gst_v4l2src_get_caps (GstBaseSrc * src);
static gboolean gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query); static gboolean gst_v4l2src_query (GstBaseSrc * bsrc, GstQuery * query);
static GstFlowReturn gst_v4l2src_create (GstPushSrc * src, GstBuffer ** out); static GstFlowReturn gst_v4l2src_create (GstPushSrc * src, GstBuffer ** out);
static void gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps); static void gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
static gboolean gst_v4l2src_negotiate (GstBaseSrc * basesrc); static gboolean gst_v4l2src_negotiate (GstBaseSrc * basesrc);
static void gst_v4l2src_set_property (GObject * object, guint prop_id, static void gst_v4l2src_set_property (GObject * object, guint prop_id,
@ -269,7 +261,6 @@ static void
gst_v4l2src_base_init (gpointer g_class) gst_v4l2src_base_init (gpointer g_class)
{ {
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class); GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GstV4l2SrcClass *gstv4l2src_class = GST_V4L2SRC_CLASS (g_class); GstV4l2SrcClass *gstv4l2src_class = GST_V4L2SRC_CLASS (g_class);
gstv4l2src_class->v4l2_class_devices = NULL; gstv4l2src_class->v4l2_class_devices = NULL;
@ -288,9 +279,7 @@ static void
gst_v4l2src_class_init (GstV4l2SrcClass * klass) gst_v4l2src_class_init (GstV4l2SrcClass * klass)
{ {
GObjectClass *gobject_class; GObjectClass *gobject_class;
GstBaseSrcClass *basesrc_class; GstBaseSrcClass *basesrc_class;
GstPushSrcClass *pushsrc_class; GstPushSrcClass *pushsrc_class;
gobject_class = G_OBJECT_CLASS (klass); gobject_class = G_OBJECT_CLASS (klass);
@ -305,13 +294,13 @@ gst_v4l2src_class_init (GstV4l2SrcClass * klass)
gst_v4l2_object_install_properties_helper (gobject_class); gst_v4l2_object_install_properties_helper (gobject_class);
g_object_class_install_property (gobject_class, PROP_QUEUE_SIZE, g_object_class_install_property (gobject_class, PROP_QUEUE_SIZE,
g_param_spec_uint ("queue-size", "Queue size", g_param_spec_uint ("queue-size", "Queue size",
"Number of buffers to be enqueud in the driver", "Number of buffers to be enqueud in the driver in streaming mode",
GST_V4L2_MIN_BUFFERS, GST_V4L2_MAX_BUFFERS, GST_V4L2_MIN_BUFFERS, GST_V4L2_MIN_BUFFERS, GST_V4L2_MAX_BUFFERS, PROP_DEF_QUEUE_SIZE,
G_PARAM_READWRITE)); G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_ALWAYS_COPY, g_object_class_install_property (gobject_class, PROP_ALWAYS_COPY,
g_param_spec_boolean ("always-copy", "Always Copy", g_param_spec_boolean ("always-copy", "Always Copy",
"If the buffer will or not be used directly from mmap", "If the buffer will or not be used directly from mmap",
DEFAULT_PROP_ALWAYS_COPY, G_PARAM_READWRITE)); PROP_DEF_ALWAYS_COPY, G_PARAM_READWRITE));
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_get_caps); basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_get_caps);
basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_set_caps); basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_v4l2src_set_caps);
@ -334,9 +323,9 @@ gst_v4l2src_init (GstV4l2Src * v4l2src, GstV4l2SrcClass * klass)
gst_v4l2_get_input, gst_v4l2_set_input, NULL); gst_v4l2_get_input, gst_v4l2_set_input, NULL);
/* number of buffers requested */ /* number of buffers requested */
v4l2src->num_buffers = GST_V4L2_MIN_BUFFERS; v4l2src->num_buffers = PROP_DEF_QUEUE_SIZE;
v4l2src->always_copy = DEFAULT_PROP_ALWAYS_COPY; v4l2src->always_copy = PROP_DEF_ALWAYS_COPY;
v4l2src->formats = NULL; v4l2src->formats = NULL;
@ -363,7 +352,6 @@ gst_v4l2src_dispose (GObject * object)
gst_caps_unref (v4l2src->probed_caps); gst_caps_unref (v4l2src->probed_caps);
} }
G_OBJECT_CLASS (parent_class)->dispose (object); G_OBJECT_CLASS (parent_class)->dispose (object);
} }
@ -428,7 +416,6 @@ static void
gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps) gst_v4l2src_fixate (GstBaseSrc * basesrc, GstCaps * caps)
{ {
GstStructure *structure; GstStructure *structure;
gint i; gint i;
GST_DEBUG_OBJECT (basesrc, "fixating caps %" GST_PTR_FORMAT, caps); GST_DEBUG_OBJECT (basesrc, "fixating caps %" GST_PTR_FORMAT, caps);
@ -468,11 +455,8 @@ static gboolean
gst_v4l2src_negotiate (GstBaseSrc * basesrc) gst_v4l2src_negotiate (GstBaseSrc * basesrc)
{ {
GstCaps *thiscaps; GstCaps *thiscaps;
GstCaps *caps = NULL; GstCaps *caps = NULL;
GstCaps *peercaps = NULL; GstCaps *peercaps = NULL;
gboolean result = FALSE; gboolean result = FALSE;
/* first see what is possible on our source pad */ /* first see what is possible on our source pad */
@ -793,7 +777,6 @@ static struct v4l2_fmtdesc *
gst_v4l2src_get_format_from_fourcc (GstV4l2Src * v4l2src, guint32 fourcc) gst_v4l2src_get_format_from_fourcc (GstV4l2Src * v4l2src, guint32 fourcc)
{ {
struct v4l2_fmtdesc *fmt; struct v4l2_fmtdesc *fmt;
GSList *walk; GSList *walk;
if (fourcc == 0) if (fourcc == 0)
@ -846,9 +829,7 @@ static GstCaps *
gst_v4l2src_get_caps (GstBaseSrc * src) gst_v4l2src_get_caps (GstBaseSrc * src)
{ {
GstV4l2Src *v4l2src = GST_V4L2SRC (src); GstV4l2Src *v4l2src = GST_V4L2SRC (src);
GstCaps *ret; GstCaps *ret;
GSList *walk; GSList *walk;
if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) { if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) {
@ -909,13 +890,9 @@ gst_v4l2_get_caps_info (GstV4l2Src * v4l2src, GstCaps * caps,
guint * fps_d, guint * size) guint * fps_d, guint * size)
{ {
GstStructure *structure; GstStructure *structure;
const GValue *framerate; const GValue *framerate;
guint32 fourcc; guint32 fourcc;
const gchar *mimetype; const gchar *mimetype;
guint outsize; guint outsize;
/* default unknown values */ /* default unknown values */
@ -1056,13 +1033,9 @@ static gboolean
gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps) gst_v4l2src_set_caps (GstBaseSrc * src, GstCaps * caps)
{ {
GstV4l2Src *v4l2src; GstV4l2Src *v4l2src;
gint w = 0, h = 0; gint w = 0, h = 0;
struct v4l2_fmtdesc *format; struct v4l2_fmtdesc *format;
guint fps_n, fps_d; guint fps_n, fps_d;
guint size; guint size;
v4l2src = GST_V4L2SRC (src); v4l2src = GST_V4L2SRC (src);
@ -1294,14 +1267,9 @@ static GstFlowReturn
gst_v4l2src_get_mmap (GstV4l2Src * v4l2src, GstBuffer ** buf) gst_v4l2src_get_mmap (GstV4l2Src * v4l2src, GstBuffer ** buf)
{ {
GstBuffer *temp; GstBuffer *temp;
GstFlowReturn ret; GstFlowReturn ret;
guint size; guint size;
guint count = 0;
guint count;
count = 0;
again: again:
ret = gst_v4l2src_grab_frame (v4l2src, &temp); ret = gst_v4l2src_grab_frame (v4l2src, &temp);

9
sys/v4l2/gstv4l2src.h
View file

@ -28,8 +28,11 @@
GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug); GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
/* size of v4l2 buffer pool in streaming case */
#define GST_V4L2_MAX_BUFFERS 16 #define GST_V4L2_MAX_BUFFERS 16
#define GST_V4L2_MIN_BUFFERS 2 #define GST_V4L2_MIN_BUFFERS 1
/* max frame width/height */
#define GST_V4L2_MAX_SIZE (1<<15) /* 2^15 == 32768 */ #define GST_V4L2_MAX_SIZE (1<<15) /* 2^15 == 32768 */
G_BEGIN_DECLS G_BEGIN_DECLS
@ -88,14 +91,12 @@ struct _GstV4l2Src
GstV4l2Object * v4l2object; GstV4l2Object * v4l2object;
/* pads */ /* pads */
GstPad *srcpad;
GstCaps *probed_caps; GstCaps *probed_caps;
/* internal lists */ /* internal lists */
GSList *formats; /* list of available capture formats */ GSList *formats; /* list of available capture formats */
/* buffers */ /* buffer handling */
GstV4l2BufferPool *pool; GstV4l2BufferPool *pool;
guint32 num_buffers; guint32 num_buffers;