Open the video device at regular intervals (every 10 seconds)
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968a9353be
commit
5fdad562a9
@ -13,7 +13,6 @@
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* TODO:
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* - attempt to open the video device at regular intervals
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* - display a window even if it was impossible to open a capture device
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* - re-use code from the Camera project instead */
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@ -85,6 +84,9 @@ static void _video_destroy(VideoPhonePlugin * video);
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static int _video_ioctl(VideoPhonePlugin * video, unsigned long request,
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void * data);
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static void _video_start(VideoPhonePlugin * video);
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static void _video_stop(VideoPhonePlugin * video);
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/* callbacks */
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static gboolean _video_on_can_read(GIOChannel * channel, GIOCondition condition,
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gpointer data);
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@ -93,6 +95,7 @@ static gboolean _video_on_drawing_area_configure(GtkWidget * widget,
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GdkEventConfigure * event, gpointer data);
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static gboolean _video_on_drawing_area_expose(GtkWidget * widget,
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GdkEventExpose * event, gpointer data);
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static gboolean _video_on_open(gpointer data);
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static gboolean _video_on_refresh(gpointer data);
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@ -113,8 +116,6 @@ PhonePluginDefinition plugin =
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/* private */
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/* functions */
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/* video_init */
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static int _open_setup(VideoPhonePlugin * video);
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static VideoPhonePlugin * _video_init(PhonePluginHelper * helper)
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{
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VideoPhonePlugin * video;
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@ -149,17 +150,11 @@ static VideoPhonePlugin * _video_init(PhonePluginHelper * helper)
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video->gc = NULL;
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video->window = NULL;
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/* check for errors */
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if((video->device = string_new(device)) == NULL
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|| (video->fd = open(device, O_RDWR)) < 0)
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if((video->device = string_new(device)) == NULL)
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{
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helper->error(helper->phone,
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"Could not open the video capture device", 1);
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_video_destroy(video);
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return NULL;
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}
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if(_open_setup(video) != 0)
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{
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helper->error(helper->phone, error_get(), 1);
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"Could not initialize the video capture device",
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1);
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_video_destroy(video);
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return NULL;
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}
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@ -180,11 +175,199 @@ static VideoPhonePlugin * _video_init(PhonePluginHelper * helper)
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video->format.fmt.pix.height);
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gtk_container_add(GTK_CONTAINER(video->window), video->area);
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gtk_widget_show_all(video->window);
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if(_video_on_refresh(video) == TRUE)
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video->source = g_timeout_add(1000, _video_on_refresh, video);
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_video_start(video);
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return video;
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}
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/* video_destroy */
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static void _video_destroy(VideoPhonePlugin * video)
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{
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_video_stop(video);
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if(video->channel != NULL)
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{
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/* XXX we ignore errors at this point */
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g_io_channel_shutdown(video->channel, TRUE, NULL);
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#if 0
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/* FIXME seems to cause a crash in the original code */
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g_object_unref(video->channel);
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#endif
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}
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if(video->pixmap != NULL)
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g_object_unref(video->pixmap);
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if(video->gc != NULL)
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g_object_unref(video->gc);
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if(video->window != NULL)
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gtk_widget_destroy(video->window);
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if(video->fd >= 0)
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close(video->fd);
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if((char *)video->rgb_buffer != video->raw_buffer)
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free(video->rgb_buffer);
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free(video->raw_buffer);
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string_delete(video->device);
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object_delete(video);
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}
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/* useful */
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/* video_ioctl */
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static int _video_ioctl(VideoPhonePlugin * video, unsigned long request,
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void * data)
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{
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int ret;
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for(;;)
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if((ret = ioctl(video->fd, request, data)) != -1
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|| errno != EINTR)
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break;
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return ret;
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}
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/* video_start */
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static void _video_start(VideoPhonePlugin * video)
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{
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if(video->source != 0)
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return;
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video->source = g_idle_add(_video_on_open, video);
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}
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/* video_stop */
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static void _video_stop(VideoPhonePlugin * video)
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{
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if(video->source != 0)
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g_source_remove(video->source);
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video->source = 0;
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}
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/* callbacks */
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/* video_on_can_read */
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static gboolean _video_on_can_read(GIOChannel * channel, GIOCondition condition,
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gpointer data)
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{
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VideoPhonePlugin * video = data;
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PhonePluginHelper * helper = video->helper;
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ssize_t s;
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s()\n", __func__);
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#endif
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if(channel != video->channel || condition != G_IO_IN)
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return FALSE;
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if((s = read(video->fd, video->raw_buffer, video->raw_buffer_cnt))
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<= 0)
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{
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/* this error can be ignored */
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if(errno == EAGAIN)
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return TRUE;
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close(video->fd);
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video->fd = -1;
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helper->error(helper->phone, strerror(errno), 1);
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video->source = 0;
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return FALSE;
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}
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s() %lu %ld\n", __func__,
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video->raw_buffer_cnt, s);
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#endif
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video->source = g_idle_add(_video_on_refresh, video);
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return FALSE;
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}
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/* video_on_closex */
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static gboolean _video_on_closex(gpointer data)
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{
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VideoPhonePlugin * video = data;
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gtk_widget_hide(video->window);
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_video_stop(video);
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return TRUE;
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}
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/* video_on_drawing_area_configure */
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static gboolean _video_on_drawing_area_configure(GtkWidget * widget,
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GdkEventConfigure * event, gpointer data)
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{
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/* XXX this code is inspired from GQcam */
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VideoPhonePlugin * video = data;
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GtkAllocation * allocation = &video->area_allocation;
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if(video->pixmap != NULL)
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g_object_unref(video->pixmap);
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/* FIXME requires Gtk+ 2.18 */
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gtk_widget_get_allocation(widget, allocation);
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s() %dx%d\n", __func__, allocation->width,
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allocation->height);
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#endif
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video->pixmap = gdk_pixmap_new(widget->window, allocation->width,
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allocation->height, -1);
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/* FIXME is it not better to scale the previous pixmap for now? */
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gdk_draw_rectangle(video->pixmap, video->gc, TRUE, 0, 0,
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allocation->width, allocation->height);
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return TRUE;
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}
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/* video_on_drawing_area_expose */
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static gboolean _video_on_drawing_area_expose(GtkWidget * widget,
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GdkEventExpose * event, gpointer data)
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{
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/* XXX this code is inspired from GQcam */
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VideoPhonePlugin * video = data;
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gdk_draw_pixmap(widget->window, video->gc, video->pixmap,
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event->area.x, event->area.y,
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event->area.x, event->area.y,
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event->area.width, event->area.height);
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return FALSE;
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}
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/* video_on_open */
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static int _open_setup(VideoPhonePlugin * video);
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static gboolean _video_on_open(gpointer data)
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{
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VideoPhonePlugin * video = data;
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PhonePluginHelper * helper = video->helper;
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s() \"%s\"\n", __func__, video->device);
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#endif
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if((video->fd = open(video->device, O_RDWR)) < 0)
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{
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error_set_code(1, "%s: %s (%s)", video->device,
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"Could not open the video capture device",
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strerror(errno));
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helper->error(helper->phone, error_get(), 1);
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video->source = g_timeout_add(10000, _video_on_open, video);
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return FALSE;
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}
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if(_open_setup(video) != 0)
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{
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helper->error(helper->phone, error_get(), 1);
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close(video->fd);
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video->fd = -1;
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video->source = g_timeout_add(10000, _video_on_open, video);
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return FALSE;
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}
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video->source = 0;
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s() %dx%d\n", __func__,
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video->format.fmt.pix.width,
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video->format.fmt.pix.height);
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#endif
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/* FIXME allow the window to be smaller */
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gtk_widget_set_size_request(video->area, video->format.fmt.pix.width,
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video->format.fmt.pix.height);
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return FALSE;
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}
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static int _open_setup(VideoPhonePlugin * video)
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{
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struct v4l2_cropcap cropcap;
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@ -256,139 +439,6 @@ static int _open_setup(VideoPhonePlugin * video)
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}
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/* video_destroy */
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static void _video_destroy(VideoPhonePlugin * video)
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{
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if(video->source != 0)
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g_source_remove(video->source);
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if(video->channel != NULL)
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{
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/* XXX we ignore errors at this point */
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g_io_channel_shutdown(video->channel, TRUE, NULL);
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#if 0
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/* FIXME seems to cause a crash in the original code */
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g_object_unref(video->channel);
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#endif
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}
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if(video->pixmap != NULL)
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g_object_unref(video->pixmap);
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if(video->gc != NULL)
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g_object_unref(video->gc);
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if(video->window != NULL)
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gtk_widget_destroy(video->window);
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if(video->fd >= 0)
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close(video->fd);
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if((char *)video->rgb_buffer != video->raw_buffer)
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free(video->rgb_buffer);
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free(video->raw_buffer);
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string_delete(video->device);
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object_delete(video);
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}
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/* useful */
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/* video_ioctl */
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static int _video_ioctl(VideoPhonePlugin * video, unsigned long request,
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void * data)
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{
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int ret;
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for(;;)
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if((ret = ioctl(video->fd, request, data)) != -1
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|| errno != EINTR)
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break;
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return ret;
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}
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/* callbacks */
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/* video_on_can_read */
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static gboolean _video_on_can_read(GIOChannel * channel, GIOCondition condition,
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gpointer data)
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{
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VideoPhonePlugin * video = data;
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PhonePluginHelper * helper = video->helper;
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ssize_t s;
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s()\n", __func__);
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#endif
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if(channel != video->channel || condition != G_IO_IN)
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return FALSE;
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if((s = read(video->fd, video->raw_buffer, video->raw_buffer_cnt))
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<= 0)
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{
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/* this error can be ignored */
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if(errno == EAGAIN)
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return TRUE;
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close(video->fd);
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video->fd = -1;
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helper->error(helper->phone, strerror(errno), 1);
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video->source = 0;
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return FALSE;
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}
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s() %lu %ld\n", __func__,
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video->raw_buffer_cnt, s);
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#endif
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video->source = g_idle_add(_video_on_refresh, video);
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return FALSE;
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}
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/* video_on_closex */
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static gboolean _video_on_closex(gpointer data)
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{
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VideoPhonePlugin * video = data;
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gtk_widget_hide(video->window);
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if(video->source != 0)
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g_source_remove(video->source);
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video->source = 0;
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return TRUE;
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}
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/* video_on_drawing_area_configure */
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static gboolean _video_on_drawing_area_configure(GtkWidget * widget,
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GdkEventConfigure * event, gpointer data)
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{
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/* XXX this code is inspired from GQcam */
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VideoPhonePlugin * video = data;
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GtkAllocation * allocation = &video->area_allocation;
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if(video->pixmap != NULL)
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g_object_unref(video->pixmap);
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/* FIXME requires Gtk+ 2.18 */
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gtk_widget_get_allocation(widget, allocation);
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#ifdef DEBUG
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fprintf(stderr, "DEBUG: %s() %dx%d\n", __func__, allocation->width,
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allocation->height);
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#endif
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video->pixmap = gdk_pixmap_new(widget->window, allocation->width,
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allocation->height, -1);
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/* FIXME is it not better to scale the previous pixmap for now? */
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gdk_draw_rectangle(video->pixmap, video->gc, TRUE, 0, 0,
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allocation->width, allocation->height);
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return TRUE;
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}
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/* video_on_drawing_area_expose */
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static gboolean _video_on_drawing_area_expose(GtkWidget * widget,
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GdkEventExpose * event, gpointer data)
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{
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/* XXX this code is inspired from GQcam */
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VideoPhonePlugin * video = data;
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gdk_draw_pixmap(widget->window, video->gc, video->pixmap,
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event->area.x, event->area.y,
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event->area.x, event->area.y,
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event->area.width, event->area.height);
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return FALSE;
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}
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/* video_on_refresh */
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static void _refresh_convert(VideoPhonePlugin * video);
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static void _refresh_convert_yuv(int amp, uint8_t y, uint8_t u, uint8_t v,
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