Merge remote-tracking branch 'qatar/master'

* qatar/master:
  wmalosslessdec: increase channel_coeffs/residues size
  wmalosslessdec: increase WMALL_BLOCK_MAX_BITS to 14.
  lagarith: check count before writing zeros.
  wmaprodec: check num_vec_coeffs for validity
  avidec: use actually read size instead of requested size
  avidec: return 0, not packet size from read_packet().

Conflicts:
	libavcodec/lagarith.c
	libavcodec/wmalosslessdec.c
	libavcodec/wmaprodec.c
	libavformat/avidec.c

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

libavcodec/lagarith.c

@@ -365,10 +365,11 @@ static int lag_decode_zero_run_line(LagarithContext *l, uint8_t *dst,
 output_zeros:
     if (l->zeros_rem) {
         count = FFMIN(l->zeros_rem, width - i);
-        if(end - dst < count) {
-            av_log(l->avctx, AV_LOG_ERROR, "too many zeros remaining\n");
+        if (end - dst < count) {
+            av_log(l->avctx, AV_LOG_ERROR, "Too many zeros remaining.\n");
             return AVERROR_INVALIDDATA;
         }
+
         memset(dst, 0, count);
         l->zeros_rem -= count;
         dst += count;

libavcodec/wmalosslessdec.c

@@ -23,6 +23,8 @@
  */
 
 #include "libavutil/attributes.h"
+#include "libavutil/avassert.h"
+
 #include "avcodec.h"
 #include "internal.h"
 #include "get_bits.h"
@@ -38,7 +40,7 @@
 #define MAX_ORDER             256
 
 #define WMALL_BLOCK_MIN_BITS    6                       ///< log2 of min block size
-#define WMALL_BLOCK_MAX_BITS   12                       ///< log2 of max block size
+#define WMALL_BLOCK_MAX_BITS   14                       ///< log2 of max block size
 #define WMALL_BLOCK_MAX_SIZE (1 << WMALL_BLOCK_MAX_BITS)    ///< maximum block size
 #define WMALL_BLOCK_SIZES    (WMALL_BLOCK_MAX_BITS - WMALL_BLOCK_MIN_BITS + 1) ///< possible block sizes
 
@@ -213,12 +215,9 @@ static av_cold int decode_init(AVCodecContext *avctx)
     s->len_prefix  = s->decode_flags & 0x40;
 
     /* get frame len */
-    bits = ff_wma_get_frame_len_bits(avctx->sample_rate, 3, s->decode_flags);
-    if (bits > WMALL_BLOCK_MAX_BITS) {
-        av_log_missing_feature(avctx, "big-bits block sizes", 1);
-        return AVERROR_INVALIDDATA;
-    }
-    s->samples_per_frame = 1 << bits;
+    s->samples_per_frame = 1 << ff_wma_get_frame_len_bits(avctx->sample_rate,
+                                                          3, s->decode_flags);
+    av_assert0(s->samples_per_frame <= WMALL_BLOCK_MAX_SIZE);
 
     /* init previous block len */
     for (i = 0; i < avctx->channels; i++)

libavformat/avidec.c

@@ -1205,7 +1205,7 @@ resync:
             }
             ast->frame_offset += get_duration(ast, pkt->size);
         }
-        ast->remaining -= size;
+        ast->remaining -= err;
         if(!ast->remaining){
             avi->stream_index= -1;
             ast->packet_size= 0;
@@ -1227,7 +1227,7 @@ resync:
                 avi->dts_max = dts;
         }
 
-        return size;
+        return 0;
     }
 
     if ((err = avi_sync(s, 0)) < 0)