Merge remote-tracking branch 'qatar/master'

* qatar/master:
  build: fix standalone compilation of OMA muxer
  build: fix standalone compilation of Microsoft XMV demuxer
  build: fix standalone compilation of Core Audio Format demuxer
  kvmc: fix invalid reads
  4xm: Add a check in decode_i_frame to prevent buffer overreads
  adpcm: fix IMA SMJPEG decoding
  options: set minimum for "threads" to zero
  bsd: use number of logical CPUs as automatic thread count
  windows: use number of CPUs as automatic thread count
  linux: use number of CPUs as automatic thread count
  pthreads: reset active_thread_type when slice thread_init returrns early
  v410dec: include correct headers
  Drop ALT_ prefix from BITSTREAM_READER_LE name.
  lavfi: always build vsrc_buffer.
  ra144enc: zero the reflection coeffs if the filter is unstable
  sws: readd PAL8 to isPacked()
  mov: Don't stick the QuickTime field ordering atom in extradata.
  truespeech: fix invalid reads in truespeech_apply_twopoint_filter()

Conflicts:
	configure
	libavcodec/4xm.c
	libavcodec/avcodec.h
	libavfilter/Makefile
	libavfilter/allfilters.c
	libavformat/Makefile
	libswscale/swscale_internal.h

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

1 files changed, 9 insertions, 5 deletions

diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index e7657945dd..688fba430c 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -1007,11 +1007,15 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
         break;
     case CODEC_ID_ADPCM_IMA_AMV:
     case CODEC_ID_ADPCM_IMA_SMJPEG:
-        c->status[0].predictor = (int16_t)bytestream_get_le16(&src);
-        c->status[0].step_index = bytestream_get_le16(&src);
-
-        if (avctx->codec->id == CODEC_ID_ADPCM_IMA_AMV)
-            src+=4;
+        if (avctx->codec->id == CODEC_ID_ADPCM_IMA_AMV) {
+            c->status[0].predictor = sign_extend(bytestream_get_le16(&src), 16);
+            c->status[0].step_index = bytestream_get_le16(&src);
+            src += 4;
+        } else {
+            c->status[0].predictor = sign_extend(bytestream_get_be16(&src), 16);
+            c->status[0].step_index = bytestream_get_byte(&src);
+            src += 1;
+        }
 
         for (n = nb_samples >> (1 - st); n > 0; n--, src++) {
             char hi, lo;