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Diffstat (limited to 'sys/v4l/gstv4ljpegsrc.c')
-rw-r--r--sys/v4l/gstv4ljpegsrc.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/sys/v4l/gstv4ljpegsrc.c b/sys/v4l/gstv4ljpegsrc.c
deleted file mode 100644
index c640cb42..00000000
--- a/sys/v4l/gstv4ljpegsrc.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/* GStreamer
- *
- * gstv4ljpegsrc.c: V4L source element for JPEG cameras
- *
- * Copyright (C) 2004-2005 Jan Schmidt <thaytan@mad.scientist.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- e Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <sys/time.h>
-#include "gstv4ljpegsrc.h"
-#include "v4lsrc_calls.h"
-
-/* elementfactory information */
-static const GstElementDetails gst_v4ljpegsrc_details =
-GST_ELEMENT_DETAILS ("Video (video4linux/raw) Jpeg Source",
- "Source/Video",
- "Reads jpeg frames from a video4linux (eg ov519) device",
- "Jan Schmidt <thaytan@mad.scientist.com>");
-
-GST_DEBUG_CATEGORY_STATIC (v4ljpegsrc_debug);
-#define GST_CAT_DEFAULT v4ljpegsrc_debug
-
-/* init functions */
-static void gst_v4ljpegsrc_base_init (gpointer g_class);
-static void gst_v4ljpegsrc_class_init (GstV4lJpegSrcClass * klass);
-static void gst_v4ljpegsrc_init (GstV4lJpegSrc * v4ljpegsrc);
-
-/* buffer functions */
-static GstPadLinkReturn gst_v4ljpegsrc_src_link (GstPad * pad,
- const GstCaps * caps);
-static GstCaps *gst_v4ljpegsrc_getcaps (GstPad * pad);
-static GstData *gst_v4ljpegsrc_get (GstPad * pad);
-
-static GstElementClass *parent_class = NULL;
-
-GType
-gst_v4ljpegsrc_get_type (void)
-{
- static GType v4ljpegsrc_type = 0;
-
- if (!v4ljpegsrc_type) {
- static const GTypeInfo v4ljpegsrc_info = {
- sizeof (GstV4lJpegSrcClass),
- gst_v4ljpegsrc_base_init,
- NULL,
- (GClassInitFunc) gst_v4ljpegsrc_class_init,
- NULL,
- NULL,
- sizeof (GstV4lJpegSrc),
- 0,
- (GInstanceInitFunc) gst_v4ljpegsrc_init,
- NULL
- };
-
- v4ljpegsrc_type =
- g_type_register_static (GST_TYPE_V4LSRC, "GstV4lJpegSrc",
- &v4ljpegsrc_info, 0);
- GST_DEBUG_CATEGORY_INIT (v4ljpegsrc_debug, "v4ljpegsrc", 0,
- "V4L JPEG source element");
- }
- return v4ljpegsrc_type;
-}
-
-static void
-gst_v4ljpegsrc_base_init (gpointer g_class)
-{
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_set_details (gstelement_class, &gst_v4ljpegsrc_details);
-}
-
-static void
-gst_v4ljpegsrc_class_init (GstV4lJpegSrcClass * klass)
-{
- parent_class = g_type_class_peek_parent (klass);
-}
-
-static void
-gst_v4ljpegsrc_init (GstV4lJpegSrc * v4ljpegsrc)
-{
- GstV4lSrc *v4lsrc = GST_V4LSRC (v4ljpegsrc);
- GstPad *pad = v4lsrc->srcpad;
-
- /*
- * Stash away and then replace the getcaps and get functions on the src pad
- */
- v4ljpegsrc->getfn = GST_RPAD_GETFUNC (pad);
- v4ljpegsrc->getcapsfn = GST_RPAD_GETCAPSFUNC (pad);
-
- gst_pad_set_get_function (v4lsrc->srcpad, gst_v4ljpegsrc_get);
- gst_pad_set_getcaps_function (v4lsrc->srcpad, gst_v4ljpegsrc_getcaps);
- gst_pad_set_link_function (v4lsrc->srcpad, gst_v4ljpegsrc_src_link);
-}
-
-static GstPadLinkReturn
-gst_v4ljpegsrc_src_link (GstPad * pad, const GstCaps * vscapslist)
-{
- GstV4lJpegSrc *v4ljpegsrc;
- GstV4lSrc *v4lsrc;
- gint w, h, palette = -1;
- const GValue *fps;
- GstStructure *structure;
- gboolean was_capturing;
- struct video_window *vwin;
-
- v4ljpegsrc = GST_V4LJPEGSRC (gst_pad_get_parent (pad));
- v4lsrc = GST_V4LSRC (v4ljpegsrc);
- vwin = &GST_V4LELEMENT (v4lsrc)->vwin;
- 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))) {
- return GST_PAD_LINK_DELAYED;
- }
-
- structure = gst_caps_get_structure (vscapslist, 0);
-
- gst_structure_get_int (structure, "width", &w);
- gst_structure_get_int (structure, "height", &h);
- fps = gst_structure_get_value (structure, "framerate");
-
- GST_DEBUG_OBJECT (v4ljpegsrc, "linking with %dx%d at %d/%d fps", w, h,
- gst_value_get_fraction_numerator (fps),
- gst_value_get_fraction_denominator (fps));
-
- /* set framerate if it's not already correct */
- if (fps != gst_v4lsrc_get_fps (v4lsrc)) {
- int fps_index = fps / 15.0 * 16;
-
- GST_DEBUG_OBJECT (v4ljpegsrc, "Trying to set fps index %d", fps_index);
- /* set bits 16 to 21 to 0 */
- vwin->flags &= (0x3F00 - 1);
- /* set bits 16 to 21 to the index */
- vwin->flags |= fps_index << 16;
- if (!gst_v4l_set_window_properties (GST_V4LELEMENT (v4lsrc))) {
- return GST_PAD_LINK_DELAYED;
- }
- }
-
- /*
- * Try to set the camera to capture RGB24
- */
- palette = VIDEO_PALETTE_RGB24;
- v4lsrc->buffer_size = w * h * 3;
-
- GST_DEBUG_OBJECT (v4ljpegsrc, "trying to set_capture %dx%d, palette %d",
- w, h, palette);
- /* this only fills in v4lsrc->mmap values */
- if (!gst_v4lsrc_set_capture (v4lsrc, w, h, palette)) {
- GST_WARNING_OBJECT (v4ljpegsrc, "could not set_capture %dx%d, palette %d",
- w, h, palette);
- return GST_PAD_LINK_REFUSED;
- }
-
- /* first try the negotiated settings using try_capture */
- if (!gst_v4lsrc_try_capture (v4lsrc, w, h, palette)) {
- GST_DEBUG_OBJECT (v4ljpegsrc, "failed trying palette %d for %dx%d", palette,
- w, h);
- return GST_PAD_LINK_REFUSED;
- }
-
- if (!gst_v4lsrc_capture_init (v4lsrc))
- return GST_PAD_LINK_REFUSED;
-
- if (was_capturing || GST_STATE (v4lsrc) == GST_STATE_PLAYING) {
- if (!gst_v4lsrc_capture_start (v4lsrc))
- return GST_PAD_LINK_REFUSED;
- }
-
- return GST_PAD_LINK_OK;
-}
-
-static GstCaps *
-gst_v4ljpegsrc_getcaps (GstPad * pad)
-{
- GstCaps *list;
- GstV4lJpegSrc *v4ljpegsrc = GST_V4LJPEGSRC (gst_pad_get_parent (pad));
- GstV4lSrc *v4lsrc = GST_V4LSRC (v4ljpegsrc);
- struct video_capability *vcap = &GST_V4LELEMENT (v4lsrc)->vcap;
- gfloat fps = 0.0;
-
- if (!GST_V4L_IS_OPEN (GST_V4LELEMENT (v4lsrc))) {
- return gst_caps_new_any ();
- }
- if (!v4lsrc->autoprobe) {
- /* FIXME: query current caps and return those, with _any appended */
- return gst_caps_new_any ();
- }
-
- list = gst_caps_new_simple ("image/jpeg", NULL);
- GST_DEBUG_OBJECT (v4ljpegsrc,
- "Device reports w: %d-%d, h: %d-%d, fps: %f",
- vcap->minwidth, vcap->maxwidth, vcap->minheight, vcap->maxheight, fps);
-
- if (vcap->minwidth < vcap->maxwidth) {
- gst_caps_set_simple (list, "width", GST_TYPE_INT_RANGE, vcap->minwidth,
- vcap->maxwidth, NULL);
- } else {
- gst_caps_set_simple (list, "width", G_TYPE_INT, vcap->minwidth, NULL);
- }
- if (vcap->minheight < vcap->maxheight) {
- gst_caps_set_simple (list, "height", GST_TYPE_INT_RANGE, vcap->minheight,
- vcap->maxheight, NULL);
- } else {
- gst_caps_set_simple (list, "height", G_TYPE_INT, vcap->minheight, NULL);
- }
-
- if (v4lsrc->fps_list) {
- GstStructure *structure = gst_caps_get_structure (list, 0);
-
- gst_structure_set_value (structure, "framerate", v4lsrc->fps_list);
- }
- GST_DEBUG_OBJECT (v4ljpegsrc, "caps: %" GST_PTR_FORMAT, list);
-
- return list;
-}
-
-static GstData *
-gst_v4ljpegsrc_get (GstPad * pad)
-{
- GstV4lJpegSrc *v4ljpegsrc;
- GstV4lSrc *v4lsrc;
- GstData *data;
- GstBuffer *buf;
- GstBuffer *outbuf;
- int jpeg_size;
-
- g_return_val_if_fail (pad != NULL, NULL);
- v4ljpegsrc = GST_V4LJPEGSRC (gst_pad_get_parent (pad));
- v4lsrc = GST_V4LSRC (v4ljpegsrc);
-
- /* Fetch from the v4lsrc class get fn. */
- data = v4ljpegsrc->getfn (pad);
-
- /* If not a buffer, return it unchanged */
- if (!data || (!GST_IS_BUFFER (data)))
- return data;
-
- buf = GST_BUFFER (data);
-
- /* Confirm that the buffer contains jpeg data */
-
- /*
- * Create a new subbuffer from the jpeg data
- * The first 2 bytes in the buffer are the size of the jpeg data
- */
- if (GST_BUFFER_SIZE (buf) > 2) {
- jpeg_size = (int) (GST_READ_UINT16_LE (GST_BUFFER_DATA (buf))) * 8;
- } else
- jpeg_size = 0;
-
- /* Check that the size is sensible */
- if ((jpeg_size <= 0) || (jpeg_size > GST_BUFFER_SIZE (buf) - 2)) {
- GST_ELEMENT_ERROR (v4ljpegsrc, STREAM, FORMAT, (NULL),
- ("Invalid non-jpeg frame from camera"));
- return NULL;
- }
-
- GST_DEBUG_OBJECT (v4ljpegsrc, "Creating JPEG subbuffer of size %d",
- jpeg_size);
- outbuf = gst_buffer_create_sub (buf, 2, jpeg_size);
-
- /* Copy timestamps onto the subbuffer */
- gst_buffer_stamp (outbuf, buf);
-
- /* Release the main buffer */
- gst_buffer_unref (buf);
-
- return GST_DATA (outbuf);
-}
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