SmartAudio/package/multimedia/gst1-plugins-good/patches/0002-add-pause-and-resume-to-mute-camera.patch

diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c
index 86d5c8b..b3f973a 100644
--- a/sys/v4l2/gstv4l2bufferpool.c
+++ b/sys/v4l2/gstv4l2bufferpool.c
@@ -2013,3 +2013,89 @@ gst_v4l2_buffer_pool_flush (GstBufferPool * bpool)

   return ret;
 }
+
+gboolean
+gst_v4l2_buffer_pool_resume (GstBufferPool * bpool)
+{
+  GstV4l2BufferPool *pool = GST_V4L2_BUFFER_POOL (bpool);
+  GstV4l2Object *obj = pool->obj;
+
+  if (pool->streaming) {
+    GST_ERROR_OBJECT (pool, "Streaming had been resmued or started");
+    return FALSE;
+  }
+
+  switch (obj->mode) {
+    case GST_V4L2_IO_MMAP:
+    case GST_V4L2_IO_USERPTR:
+    case GST_V4L2_IO_DMABUF:
+    case GST_V4L2_IO_DMABUF_IMPORT:
+      if (!V4L2_TYPE_IS_OUTPUT (pool->obj->type)) {
+        /* For captures, we need to enqueue buffers before we start streaming,
+         * so the driver don't underflow immediatly. As we have put then back
+         * into the base class queue, resurect them, then releasing will queue
+         * them back. */
+        while (gst_v4l2_buffer_pool_resurect_buffer (pool) == GST_FLOW_OK)
+          continue;
+      }
+
+      if (obj->ioctl (pool->video_fd, VIDIOC_STREAMON, &obj->type) < 0)
+        goto resume_failed;
+
+      pool->streaming = TRUE;
+
+      GST_DEBUG_OBJECT (pool, "Resume streaming");
+      break;
+    default:
+      break;
+  }
+
+  return TRUE;
+
+resume_failed:
+  {
+    GST_ERROR_OBJECT (pool, "error with RESUME STREAM %d (%s)", errno,
+        g_strerror (errno));
+    return FALSE;
+  }
+}
+
+gboolean
+gst_v4l2_buffer_pool_pause (GstBufferPool * bpool)
+{
+  GstV4l2BufferPool *pool = GST_V4L2_BUFFER_POOL (bpool);
+  GstV4l2Object *obj = pool->obj;
+
+
+  if (!pool->streaming) {
+    GST_ERROR_OBJECT (pool, "Streaming had been paused or closed");
+    return FALSE;
+  }
+
+  switch (obj->mode) {
+    case GST_V4L2_IO_MMAP:
+    case GST_V4L2_IO_USERPTR:
+    case GST_V4L2_IO_DMABUF:
+    case GST_V4L2_IO_DMABUF_IMPORT:
+
+      if (obj->ioctl (pool->video_fd, VIDIOC_STREAMOFF, &obj->type) < 0)
+        goto pause_failed;
+
+      pool->streaming = FALSE;
+
+      GST_DEBUG_OBJECT (pool, "Pause streaming");
+      break;
+    default:
+      break;
+  }
+
+  return TRUE;
+
+pause_failed:
+  {
+    GST_ERROR_OBJECT (pool, "error with PAUSE STREAM %d (%s)", errno,
+        g_strerror (errno));
+    return FALSE;
+  }
+}
+
diff --git a/sys/v4l2/gstv4l2bufferpool.h b/sys/v4l2/gstv4l2bufferpool.h
index 0fffc71..14198dc 100644
--- a/sys/v4l2/gstv4l2bufferpool.h
+++ b/sys/v4l2/gstv4l2bufferpool.h
@@ -109,6 +109,9 @@ void                gst_v4l2_buffer_pool_copy_at_threshold (GstV4l2BufferPool *

 gboolean            gst_v4l2_buffer_pool_flush   (GstBufferPool *pool);

+gboolean            gst_v4l2_buffer_pool_resume (GstBufferPool * bpool);
+
+gboolean            gst_v4l2_buffer_pool_pause (GstBufferPool * bpool);
 G_END_DECLS

 #endif /*__GST_V4L2_BUFFER_POOL_H__ */
diff --git a/sys/v4l2/gstv4l2src.c b/sys/v4l2/gstv4l2src.c
index aba4496..fa27b65 100644
--- a/sys/v4l2/gstv4l2src.c
+++ b/sys/v4l2/gstv4l2src.c
@@ -205,6 +205,10 @@ gst_v4l2src_init (GstV4l2Src * v4l2src)

   gst_base_src_set_format (GST_BASE_SRC (v4l2src), GST_FORMAT_TIME);
   gst_base_src_set_live (GST_BASE_SRC (v4l2src), TRUE);
+
+  /* add for resume and pause */
+  v4l2src->suspending = FALSE;
+  v4l2src->keyevent = FALSE;
 }


@@ -797,8 +801,27 @@ gst_v4l2src_change_state (GstElement * element, GstStateChange transition)
       /* close the device */
       if (!gst_v4l2_object_close (obj))
         return GST_STATE_CHANGE_FAILURE;
-
       break;
+    case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+      /* when task pause before pool_pause we should skip pool_pause */
+      if (v4l2src->keyevent == TRUE) {
+        v4l2src->suspending = TRUE;
+        break;
+      } else {
+        /* when suspending we should resume pool */
+        if (v4l2src->suspending == TRUE)
+          v4l2src->keyevent = TRUE;
+        break;
+      }
+    case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+      if (v4l2src->keyevent == TRUE) {
+        v4l2src->suspending = FALSE;
+        break;
+      } else {
+        if (v4l2src->suspending == FALSE)
+          v4l2src->keyevent = TRUE;
+        break;
+      }
     default:
       break;
   }
@@ -818,6 +841,16 @@ gst_v4l2src_create (GstPushSrc * src, GstBuffer ** buf)
   GstClockTime delay;
   GstMessage *qos_msg;

+  /* ensure resuming stream before dqbuf and not resume when playing */
+  while (v4l2src->suspending == TRUE) {
+    if (v4l2src->suspending == TRUE && v4l2src->keyevent == TRUE) {
+      gst_v4l2_buffer_pool_resume (pool);
+      v4l2src->keyevent = FALSE;
+      v4l2src->suspending = FALSE;
+      break;
+    }
+  }
+
   do {
     ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC (src), 0,
         obj->info.size, buf);
@@ -980,6 +1013,13 @@ retry:
   GST_BUFFER_TIMESTAMP (*buf) = timestamp;
   GST_BUFFER_DURATION (*buf) = duration;

+  /* ensure pausing stream when buf is ok */
+  if (v4l2src->suspending == FALSE && v4l2src->keyevent == TRUE) {
+    gst_v4l2_buffer_pool_pause (pool);
+    v4l2src->keyevent = FALSE;
+    v4l2src->suspending = TRUE;
+  }
+
   return ret;

   /* ERROR */
diff --git a/sys/v4l2/gstv4l2src.h b/sys/v4l2/gstv4l2src.h
index cb7f751..06dd88d 100644
--- a/sys/v4l2/gstv4l2src.h
+++ b/sys/v4l2/gstv4l2src.h
@@ -67,6 +67,8 @@ struct _GstV4l2Src
   /* Timestamp sanity check */
   GstClockTime last_timestamp;
   gboolean has_bad_timestamp;
+  gboolean suspending;
+  gboolean keyevent;
 };

 struct _GstV4l2SrcClass