gst-plugins-good:moved into main for pisi 2.0

2015-07-23 17:28:01 +03:00
parent 3b2c0b01fe
commit b531e6c050
8 changed files with 396 additions and 0 deletions
@@ -0,0 +1,58 @@
+From 4cd9255f0a8a9e15d81561f00f02d275b5095f70 Mon Sep 17 00:00:00 2001
+From: Oleksij Rempel (Alexey Fisher) <bug-track@fisher-privat.net>
+Date: Thu, 01 Mar 2012 13:15:29 +0000
+Subject: v4l2src: fix v4l2_munmap() for compressed formats
+
+Make sure we always call munmap() with the same size we called mmap()
+with before.
+
+Current v4l2src uses the same structure for VIDIOC_QUERYBUF, VIDIOC_QBUF
+and v4l2_munmap calls. The problem is that the video buffer size (length)
+may vary for compressed or emulated bufs. VIDIOC_QBUF will change it if
+we pass the pointer of a v4l2_buffer. This is why we should avoid using
+same variable for mmap and video buffers.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=671126
+---
+(limited to 'sys/v4l2')
+
+diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c
+index b81c6a4..51419ff 100644
+--- a/sys/v4l2/gstv4l2bufferpool.c
+++ b/sys/v4l2/gstv4l2bufferpool.c
+@@ -106,9 +106,9 @@ gst_v4l2_buffer_finalize (GstV4l2Buffer * buffer)
+   if (!resuscitated) {
+     GST_LOG_OBJECT (pool->v4l2elem,
+         "buffer %p (data %p, len %u) not recovered, unmapping",
+-        buffer, GST_BUFFER_DATA (buffer), buffer->vbuffer.length);
+        buffer, GST_BUFFER_DATA (buffer), buffer->mmap_length);
+     gst_mini_object_unref (GST_MINI_OBJECT (pool));
+-    v4l2_munmap ((void *) GST_BUFFER_DATA (buffer), buffer->vbuffer.length);
+    v4l2_munmap ((void *) GST_BUFFER_DATA (buffer), buffer->mmap_length);
+ 
+     GST_MINI_OBJECT_CLASS (v4l2buffer_parent_class)->finalize (GST_MINI_OBJECT
+         (buffer));
+@@ -183,6 +183,7 @@ gst_v4l2_buffer_new (GstV4l2BufferPool * pool, guint index, GstCaps * caps)
+   GST_LOG_OBJECT (pool->v4l2elem, "  length:    %u", ret->vbuffer.length);
+   GST_LOG_OBJECT (pool->v4l2elem, "  input:     %u", ret->vbuffer.input);
+ 
+  ret->mmap_length = ret->vbuffer.length;
+   data = (guint8 *) v4l2_mmap (0, ret->vbuffer.length,
+       PROT_READ | PROT_WRITE, MAP_SHARED, pool->video_fd,
+       ret->vbuffer.m.offset);
+diff --git a/sys/v4l2/gstv4l2bufferpool.h b/sys/v4l2/gstv4l2bufferpool.h
+index caad9ac..36ea323 100644
+--- a/sys/v4l2/gstv4l2bufferpool.h
+++ b/sys/v4l2/gstv4l2bufferpool.h
+@@ -70,6 +70,9 @@ struct _GstV4l2Buffer {
+   GstBuffer   buffer;
+ 
+   struct v4l2_buffer vbuffer;
+  /* warning: the size of mmap buffer and
+   * the actual frame-buffer can be different. */
+  size_t mmap_length;
+ 
+   /* FIXME: have GstV4l2Src* instead, as this has GstV4l2BufferPool* */
+   /* FIXME: do we really want to fix this if GstV4l2Buffer/Pool is shared
+--
+cgit v0.9.0.2-2-gbebe