Merge remote-tracking branch 'qatar/master'

* qatar/master: (22 commits)
  rv34: frame-level multi-threading
  mpegvideo: claim ownership of referenced pictures
  aacsbr: prevent out of bounds memcpy().
  ipmovie: fix pts for CODEC_ID_INTERPLAY_DPCM
  sierravmd: fix audio pts
  bethsoftvideo: Use bytestream2 functions to prevent buffer overreads.
  bmpenc: support for PIX_FMT_RGB444
  swscale: fix crash in fast_bilinear code when compiled with -mred-zone.
  swscale: specify register type.
  rv34: use get_bits_left()
  avconv: reinitialize the filtergraph on resolution change.
  vsrc_buffer: error on changing frame parameters.
  avconv: fix -copyinkf.
  fate: Update file checksums after the mov muxer change in a78dbada55
  movenc: Don't store a nonzero creation time if nothing was set by the caller
  bmpdec: support for rgb444 with bitfields compression
  rgb2rgb: allow conversion for <15 bpp
  doc: fix stray reference to FFmpeg
  v4l2: use C99 struct initializer
  v4l2: poll the file descriptor
  ...

Conflicts:
	avconv.c
	libavcodec/aacsbr.c
	libavcodec/bethsoftvideo.c
	libavcodec/kmvc.c
	libavdevice/v4l2.c
	libavfilter/vsrc_buffer.c
	libswscale/swscale_unscaled.c
	libswscale/x86/input.asm
	tests/ref/acodec/alac
	tests/ref/acodec/pcm_s16be
	tests/ref/acodec/pcm_s24be
	tests/ref/acodec/pcm_s32be
	tests/ref/acodec/pcm_s8
	tests/ref/lavf/mov
	tests/ref/vsynth1/dnxhd_1080i
	tests/ref/vsynth1/mpeg4
	tests/ref/vsynth1/qtrle
	tests/ref/vsynth1/svq1
	tests/ref/vsynth2/dnxhd_1080i
	tests/ref/vsynth2/mpeg4
	tests/ref/vsynth2/qtrle
	tests/ref/vsynth2/svq1

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavfilter/vsrc_buffer.c

@@ -39,6 +39,12 @@ typedef struct {
     char              sws_param[256];
 } BufferSourceContext;
 
+#define CHECK_PARAM_CHANGE(s, c, width, height, format)\
+    if (c->w != width || c->h != height || c->pix_fmt != format) {\
+        av_log(s, AV_LOG_ERROR, "Changing frame properties on the fly is not supported.\n");\
+        return AVERROR(EINVAL);\
+    }
+
 int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter,
                                         AVFilterBufferRef *picref, int flags)
 {
@@ -125,6 +131,8 @@ int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf)
         return AVERROR(EINVAL);
     }
 
+//     CHECK_PARAM_CHANGE(s, c, buf->video->w, buf->video->h, buf->format);
+
     c->picref = buf;
 
     return 0;