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shmsrc: Make the shmpipe life independant of the element states
This commit is contained in:
Olivier Crête
parent
8f8b50a88e
commit
c8eb511a9d
2 changed files with 72 additions and 16 deletions
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@ -46,7 +46,7 @@ enum
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struct GstShmBuffer
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{
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char *buf;
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GstShmSrc *src;
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GstShmPipe *pipe;
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};
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@ -77,6 +77,9 @@ static GstFlowReturn gst_shm_src_create (GstPushSrc * psrc,
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static gboolean gst_shm_src_unlock (GstBaseSrc * bsrc);
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static gboolean gst_shm_src_unlock_stop (GstBaseSrc * bsrc);
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static void gst_shm_pipe_inc (GstShmPipe *pipe);
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static void gst_shm_pipe_dec (GstShmPipe *pipe);
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// static guint gst_shm_src_signals[LAST_SIGNAL] = { 0 };
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@ -185,6 +188,10 @@ static gboolean
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gst_shm_src_start (GstBaseSrc * bsrc)
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{
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GstShmSrc *self = GST_SHM_SRC (bsrc);
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GstShmPipe *gstpipe = g_slice_new0 (GstShmPipe);
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gstpipe->use_count = 1;
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gstpipe->src = gst_object_ref (self);
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if (!self->socket_path) {
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GST_ELEMENT_ERROR (bsrc, RESOURCE, NOT_FOUND,
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@ -193,18 +200,21 @@ gst_shm_src_start (GstBaseSrc * bsrc)
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}
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GST_OBJECT_LOCK (self);
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self->pipe = sp_client_open (self->socket_path);
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gstpipe->pipe = sp_client_open (self->socket_path);
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GST_OBJECT_UNLOCK (self);
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if (!self->pipe) {
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if (!gstpipe->pipe) {
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GST_ELEMENT_ERROR (bsrc, RESOURCE, OPEN_READ_WRITE,
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("Could not open socket: %d %s", errno, strerror (errno)), (NULL));
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gst_shm_pipe_dec (gstpipe);
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return FALSE;
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}
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self->pipe = gstpipe;
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self->poll = gst_poll_new (TRUE);
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gst_poll_fd_init (&self->pollfd);
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self->pollfd.fd = sp_get_fd (self->pipe);
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self->pollfd.fd = sp_get_fd (self->pipe->pipe);
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gst_poll_add_fd (self->poll, &self->pollfd);
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gst_poll_fd_ctl_read (self->poll, &self->pollfd, TRUE);
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@ -218,10 +228,10 @@ gst_shm_src_stop (GstBaseSrc * bsrc)
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GST_DEBUG_OBJECT (self, "Stopping %p", self);
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GST_OBJECT_LOCK (self);
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sp_close (self->pipe);
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self->pipe = NULL;
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GST_OBJECT_UNLOCK (self);
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if (self->pipe) {
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gst_shm_pipe_dec (self->pipe);
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self->pipe = NULL;
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}
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gst_poll_free (self->poll);
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self->poll = NULL;
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@ -234,15 +244,17 @@ static void
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free_buffer (gpointer data)
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{
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struct GstShmBuffer *gsb = data;
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g_return_if_fail (gsb->src->pipe != NULL);
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g_return_if_fail (gsb->pipe != NULL);
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g_return_if_fail (gsb->pipe->src != NULL);
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GST_LOG ("Freeing buffer %p", gsb->buf);
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GST_OBJECT_LOCK (gsb->src);
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sp_client_recv_finish (gsb->src->pipe, gsb->buf);
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GST_OBJECT_UNLOCK (gsb->src);
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GST_OBJECT_LOCK (gsb->pipe->src);
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sp_client_recv_finish (gsb->pipe->pipe, gsb->buf);
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GST_OBJECT_UNLOCK (gsb->pipe->src);
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gst_shm_pipe_dec (gsb->pipe);
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gst_object_unref (gsb->src);
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g_slice_free (struct GstShmBuffer, gsb);
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}
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@ -282,7 +294,7 @@ gst_shm_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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buf = NULL;
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GST_LOG_OBJECT (self, "Reading from pipe");
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GST_OBJECT_LOCK (self);
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rv = sp_client_recv (self->pipe, &buf);
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rv = sp_client_recv (self->pipe->pipe, &buf);
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GST_OBJECT_UNLOCK (self);
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if (rv < 0) {
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GST_ELEMENT_ERROR (self, RESOURCE, READ, ("Failed to read from shmsrc"),
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@ -296,7 +308,8 @@ gst_shm_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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gsb = g_slice_new0 (struct GstShmBuffer);
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gsb->buf = buf;
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gsb->src = gst_object_ref (self);
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gsb->pipe = self->pipe;
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gst_shm_pipe_inc (self->pipe);
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*outbuf = gst_buffer_new ();
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GST_BUFFER_FLAG_SET (*outbuf, GST_BUFFER_FLAG_READONLY);
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@ -335,3 +348,38 @@ gst_shm_src_unlock_stop (GstBaseSrc * bsrc)
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return TRUE;
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}
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static void
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gst_shm_pipe_inc (GstShmPipe *pipe)
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{
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g_return_if_fail (pipe);
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g_return_if_fail (pipe->src);
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g_return_if_fail (pipe->use_count > 0);
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GST_OBJECT_LOCK (pipe->src);
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pipe->use_count++;
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GST_OBJECT_UNLOCK (pipe->src);
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}
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static void
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gst_shm_pipe_dec (GstShmPipe *pipe)
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{
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g_return_if_fail (pipe);
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g_return_if_fail (pipe->src);
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g_return_if_fail (pipe->use_count > 0);
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GST_OBJECT_LOCK (pipe->src);
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pipe->use_count--;
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if (pipe->use_count > 0) {
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GST_OBJECT_UNLOCK (pipe->src);
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return;
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}
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if (pipe->pipe)
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sp_close (pipe->pipe);
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GST_OBJECT_UNLOCK (pipe->src);
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gst_object_unref (pipe->src);
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g_slice_free (GstShmPipe, pipe);
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}
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@ -41,6 +41,7 @@ G_BEGIN_DECLS
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SHM_SRC))
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typedef struct _GstShmSrc GstShmSrc;
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typedef struct _GstShmSrcClass GstShmSrcClass;
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typedef struct _GstShmPipe GstShmPipe;
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struct _GstShmSrc
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{
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@ -48,7 +49,7 @@ struct _GstShmSrc
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gchar *socket_path;
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ShmPipe *pipe;
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GstShmPipe *pipe;
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GstPoll *poll;
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GstPollFD pollfd;
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@ -64,5 +65,12 @@ struct _GstShmSrcClass
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GType gst_shm_src_get_type (void);
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struct _GstShmPipe {
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int use_count;
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GstShmSrc *src;
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ShmPipe *pipe;
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};
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G_END_DECLS
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#endif /* __GST_SHM_SRC_H__ */
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