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sys/v4l/: Implement resizing... Hack. But that's why v4l is b0rked...

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Original commit message from CVS:
2004-01-28  Ronald Bultje  <rbultje@ronald.bitfreak.net>

* sys/v4l/gstv4lsrc.c: (gst_v4lsrc_class_init), (gst_v4lsrc_init),
(gst_v4lsrc_open), (gst_v4lsrc_close),
(gst_v4lsrc_palette_to_caps), (gst_v4lsrc_srcconnect),
(gst_v4lsrc_getcaps), (gst_v4lsrc_set_clock):
* sys/v4l/gstv4lsrc.h:
* sys/v4l/v4lsrc_calls.c: (gst_v4lsrc_capture_start),
(gst_v4lsrc_grab_frame), (gst_v4lsrc_capture_stop):
Implement resizing... Hack. But that's why v4l is b0rked...
This commit is contained in:
Ronald S. Bultje 2004-01-28 21:16:01 +00:00
parent 38fdf429c6
commit a6b79b4f09
4 changed files with 100 additions and 40 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2004-01-28 Ronald Bultje <rbultje@ronald.bitfreak.net>
* sys/v4l/gstv4lsrc.c: (gst_v4lsrc_class_init), (gst_v4lsrc_init),
(gst_v4lsrc_open), (gst_v4lsrc_close),
(gst_v4lsrc_palette_to_caps), (gst_v4lsrc_srcconnect),
(gst_v4lsrc_getcaps), (gst_v4lsrc_set_clock):
* sys/v4l/gstv4lsrc.h:
* sys/v4l/v4lsrc_calls.c: (gst_v4lsrc_capture_start),
(gst_v4lsrc_grab_frame), (gst_v4lsrc_capture_stop):
Implement resizing... Hack. But that's why v4l is b0rked...
2004-01-28 Julien MOUTTE <julien@moutte.net>
* sys/ximage/ximagesink.c: (gst_ximagesink_check_xshm_calls),

104
sys/v4l/gstv4lsrc.c
View file

@ -60,6 +60,12 @@ static void gst_v4lsrc_base_init (gpointer g_class);
static void gst_v4lsrc_class_init (GstV4lSrcClass *klass);
static void gst_v4lsrc_init (GstV4lSrc *v4lsrc);
/* parent class virtual functions */
static void gst_v4lsrc_open (GstElement *element,
const gchar *device);
static void gst_v4lsrc_close (GstElement *element,
const gchar *device);
/* pad/info functions */
static gboolean gst_v4lsrc_src_convert (GstPad *pad,
GstFormat src_format,
@ -140,14 +146,17 @@ gst_v4lsrc_base_init (gpointer g_class)
gst_element_class_add_pad_template (gstelement_class, src_template);
}
static void
gst_v4lsrc_class_init (GstV4lSrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstV4lElementClass *v4lelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
v4lelement_class = (GstV4lElementClass *) klass;
parent_class = g_type_class_ref(GST_TYPE_V4LELEMENT);
@ -186,6 +195,9 @@ gst_v4lsrc_class_init (GstV4lSrcClass *klass)
gstelement_class->change_state = gst_v4lsrc_change_state;
gstelement_class->set_clock = gst_v4lsrc_set_clock;
v4lelement_class->open = gst_v4lsrc_open;
v4lelement_class->close = gst_v4lsrc_close;
}
@ -213,10 +225,53 @@ gst_v4lsrc_init (GstV4lSrc *v4lsrc)
/* no clock */
v4lsrc->clock = NULL;
/* no colourspaces */
v4lsrc->colourspaces = NULL;
/* fps */
v4lsrc->use_fixed_fps = TRUE;
v4lsrc->is_capturing = FALSE;
}
static void
gst_v4lsrc_open (GstElement *element,
const gchar *device)
{
GstV4lSrc *v4lsrc = GST_V4LSRC (element);
int palette[] = {
VIDEO_PALETTE_YUV422,
VIDEO_PALETTE_YUV420P,
VIDEO_PALETTE_UYVY,
VIDEO_PALETTE_YUV411P,
VIDEO_PALETTE_YUV422P,
VIDEO_PALETTE_YUV410P,
VIDEO_PALETTE_YUV411,
VIDEO_PALETTE_RGB555,
VIDEO_PALETTE_RGB565,
VIDEO_PALETTE_RGB24,
VIDEO_PALETTE_RGB32,
-1
}, i;
for (i = 0; palette[i] != -1; i++) {
/* try palette out */
if (!gst_v4lsrc_try_palette(v4lsrc, palette[i]))
continue;
v4lsrc->colourspaces = g_list_append (v4lsrc->colourspaces,
GINT_TO_POINTER (palette[i]));
}
}
static void
gst_v4lsrc_close (GstElement *element,
const gchar *device)
{
GstV4lSrc *v4lsrc = GST_V4LSRC (element);
g_list_free (v4lsrc->colourspaces);
v4lsrc->colourspaces = NULL;
}
static gfloat
gst_v4lsrc_get_fps (GstV4lSrc *v4lsrc)
@ -327,7 +382,7 @@ gst_v4lsrc_src_query (GstPad *pad,
}
static GstCaps *
gst_v4lsrc_palette_to_caps (int palette)
gst_v4lsrc_palette_to_caps (int palette)
{
guint32 fourcc;
GstCaps *caps;
@ -424,18 +479,22 @@ gst_v4lsrc_srcconnect (GstPad *pad, const GstCaps *vscapslist)
gint bpp, depth, w, h, palette = -1;
gdouble fps;
GstStructure *structure;
gboolean was_capturing;
v4lsrc = GST_V4LSRC (gst_pad_get_parent (pad));
was_capturing = v4lsrc->is_capturing;
/* in case the buffers are active (which means that we already
* did capsnego before and didn't clean up), clean up anyways */
if (GST_V4L_IS_ACTIVE(GST_V4LELEMENT(v4lsrc)))
{
if (was_capturing) {
if (!gst_v4lsrc_capture_stop(v4lsrc))
return GST_PAD_LINK_REFUSED;
}
if (!gst_v4lsrc_capture_deinit(v4lsrc))
return GST_PAD_LINK_REFUSED;
}
else if (!GST_V4L_IS_OPEN(GST_V4LELEMENT(v4lsrc)))
{
} else if (!GST_V4L_IS_OPEN(GST_V4LELEMENT(v4lsrc))) {
return GST_PAD_LINK_DELAYED;
}
@ -450,9 +509,6 @@ gst_v4lsrc_srcconnect (GstPad *pad, const GstCaps *vscapslist)
gst_structure_get_int (structure, "height", &h);
gst_structure_get_double (structure, "framerate", &fps);
if (fps != gst_v4lsrc_get_fps(v4lsrc))
return GST_PAD_LINK_REFUSED;
switch (fourcc)
{
case GST_MAKE_FOURCC('I','4','2','0'):
@ -527,6 +583,11 @@ gst_v4lsrc_srcconnect (GstPad *pad, const GstCaps *vscapslist)
if (!gst_v4lsrc_capture_init(v4lsrc))
return GST_PAD_LINK_REFUSED;
if (was_capturing) {
if (!gst_v4lsrc_capture_start(v4lsrc))
return GST_PAD_LINK_REFUSED;
}
return GST_PAD_LINK_OK;
}
@ -536,37 +597,21 @@ gst_v4lsrc_getcaps (GstPad *pad)
{
GstCaps *list;
GstV4lSrc *v4lsrc = GST_V4LSRC(gst_pad_get_parent(pad));
int palette[] = {
VIDEO_PALETTE_YUV422,
VIDEO_PALETTE_YUV420P,
VIDEO_PALETTE_UYVY,
VIDEO_PALETTE_YUV411P,
VIDEO_PALETTE_YUV422P,
VIDEO_PALETTE_YUV410P,
VIDEO_PALETTE_YUV411,
VIDEO_PALETTE_RGB555,
VIDEO_PALETTE_RGB565,
VIDEO_PALETTE_RGB24,
VIDEO_PALETTE_RGB32,
}, i;
struct video_capability *vcap = &GST_V4LELEMENT(v4lsrc)->vcap;
GList *item;
if (!GST_V4L_IS_OPEN(GST_V4LELEMENT(v4lsrc))) {
return gst_caps_new_any ();
} else if (GST_V4L_IS_ACTIVE(GST_V4LELEMENT(v4lsrc))) {
return gst_caps_copy(GST_PAD_CAPS(v4lsrc->srcpad));
}
list = gst_caps_new_empty();
for (i = 0; i < 8; i++) {
for (item = v4lsrc->colourspaces; item != NULL; item = item->next) {
GstCaps *one;
/* try palette out */
if (!gst_v4lsrc_try_palette(v4lsrc, palette[i]))
continue;
one = gst_v4lsrc_palette_to_caps(palette[i]);
if (!one) g_print ("Palette %d gave no caps\n", palette[i]);
one = gst_v4lsrc_palette_to_caps(GPOINTER_TO_INT (item->data));
if (!one)
g_print ("Palette %d gave no caps\n",
GPOINTER_TO_INT (item->data));
gst_caps_set_simple (one,
"width", GST_TYPE_INT_RANGE, vcap->minwidth, vcap->maxwidth,
"height", GST_TYPE_INT_RANGE, vcap->minheight, vcap->maxheight,
@ -840,4 +885,3 @@ gst_v4lsrc_set_clock (GstElement *element,
{
GST_V4LSRC(element)->clock = clock;
}

11
sys/v4l/gstv4lsrc.h
View file

@ -38,6 +38,13 @@ G_BEGIN_DECLS
typedef struct _GstV4lSrc GstV4lSrc;
typedef struct _GstV4lSrcClass GstV4lSrcClass;
enum {
QUEUE_STATE_ERROR = -1,
QUEUE_STATE_READY_FOR_QUEUE,
QUEUE_STATE_QUEUED,
QUEUE_STATE_SYNCED,
};
struct _GstV4lSrc {
GstV4lElement v4lelement;
@ -57,6 +64,7 @@ struct _GstV4lSrc {
GCond *cond_queue_state;
gint num_queued;
gint sync_frame, queue_frame;
gboolean is_capturing;
/* True if we want to stop */
gboolean quit;
@ -75,6 +83,9 @@ struct _GstV4lSrc {
/* how often are we going to use each frame? */
gint *use_num_times;
/* list of supported colourspaces (as integers) */
GList *colourspaces;
/* how are we going to push buffers? */
gboolean use_fixed_fps;
};

14
sys/v4l/v4lsrc_calls.c
View file

@ -66,13 +66,6 @@ static const char *palette_name[] = {
"YUV-4:1:0 (planar)" /* VIDEO_PALETTE_YUV410P */
};
enum {
QUEUE_STATE_ERROR = -1,
QUEUE_STATE_READY_FOR_QUEUE,
QUEUE_STATE_QUEUED,
QUEUE_STATE_SYNCED,
};
/******************************************************
* gst_v4lsrc_queue_frame():
* queue a frame for capturing
@ -263,6 +256,7 @@ gst_v4lsrc_capture_start (GstV4lSrc *v4lsrc)
}
}
v4lsrc->is_capturing = TRUE;
g_mutex_unlock(v4lsrc->mutex_queue_state);
return TRUE;
@ -291,9 +285,8 @@ gst_v4lsrc_grab_frame (GstV4lSrc *v4lsrc, gint *num)
while (v4lsrc->frame_queue_state[v4lsrc->queue_frame] !=
QUEUE_STATE_READY_FOR_QUEUE &&
!v4lsrc->quit) {
GST_DEBUG (
"Waiting for frames to become available (%d < %d)",
v4lsrc->num_queued, MIN_BUFFERS_QUEUED);
GST_DEBUG ("Waiting for frames to become available (%d < %d)",
v4lsrc->num_queued, MIN_BUFFERS_QUEUED);
g_cond_wait(v4lsrc->cond_queue_state,
v4lsrc->mutex_queue_state);
}
@ -391,6 +384,7 @@ gst_v4lsrc_capture_stop (GstV4lSrc *v4lsrc)
GST_V4L_CHECK_ACTIVE(GST_V4LELEMENT(v4lsrc));
g_mutex_lock(v4lsrc->mutex_queue_state);
v4lsrc->is_capturing = FALSE;
/* make an optional pending wait stop */
v4lsrc->quit = TRUE;