Merge commit 'd05f72c7'

* commit 'd05f72c7':
  dfa: improve boundary checks in decode_dds1()
  wmalosslessdec: Fix reading too many bits in decode_channel_residues()
  wmalosslessdec: fix a get_bits(0) in decode_ac_filter
  wmalosslessdec: make MCLMS arrays big enough for what is written into them.
  indeo4/5: check empty tile size in decode_mb_info().
  ivi_common: make ff_ivi_process_empty_tile() static.
  indeo5: check tile size in decode_mb_info().
  indeo3: fix out of cell write.

Conflicts:
	libavcodec/dfa.c
	libavcodec/indeo3.c
	libavcodec/indeo5.c
	libavcodec/ivi_common.c
	libavcodec/wmalosslessdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/dfa.c

@@ -157,8 +157,7 @@ static int decode_dds1(GetByteContext *gb, uint8_t *frame, int width, int height
             bitbuf = bytestream2_get_le16u(gb);
             mask = 1;
         }
-        if (frame_end - frame < width + 2)
-            return AVERROR_INVALIDDATA;
+
         if (bitbuf & mask) {
             v = bytestream2_get_le16(gb);
             offset = (v & 0x1FFF) << 2;
@@ -172,9 +171,12 @@ static int decode_dds1(GetByteContext *gb, uint8_t *frame, int width, int height
                 frame += 2;
             }
         } else if (bitbuf & (mask << 1)) {
-            frame += bytestream2_get_le16(gb) * 2;
+            v = bytestream2_get_le16(gb)*2;
+            if (frame - frame_end < v)
+                return AVERROR_INVALIDDATA;
+            frame += v;
         } else {
-            if (frame_end - frame < width + 2)
+            if (frame_end - frame < width + 3)
                 return AVERROR_INVALIDDATA;
             frame[0] = frame[1] =
             frame[width] = frame[width + 1] =  bytestream2_get_byte(gb);

libavcodec/indeo3.c

@@ -427,8 +427,11 @@ static int decode_cell_data(Cell *cell, uint8_t *block, uint8_t *ref_block,
     blk_row_offset = (row_offset << (2 + v_zoom)) - (cell->width << 2);
     line_offset    = v_zoom ? row_offset : 0;
 
-    for (y = 0; y + v_zoom < cell->height; is_first_row = 0, y += 1 + v_zoom) {
-        for (x = 0; x + h_zoom < cell->width; x += 1 + h_zoom) {
+    if (cell->height & v_zoom || cell->width & h_zoom)
+        return IV3_BAD_DATA;
+
+    for (y = 0; y < cell->height; is_first_row = 0, y += 1 + v_zoom) {
+        for (x = 0; x < cell->width; x += 1 + h_zoom) {
             ref = ref_block;
             dst = block;
 

libavcodec/indeo5.c

@@ -452,8 +452,8 @@ static int decode_mb_info(IVI45DecContext *ctx, IVIBandDesc *band,
         ((band->qdelta_present && band->inherit_qdelta) || band->inherit_mv))
         return AVERROR_INVALIDDATA;
 
-    if( tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size) ){
-        av_log(avctx, AV_LOG_ERROR, "allocated tile size %d mismatches parameters %d\n",
+    if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) {
+        av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches parameters %d\n",
                tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
         return AVERROR_INVALIDDATA;
     }

libavcodec/ivi_common.c

@@ -495,8 +495,17 @@ int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
     return 0;
 }
 
-void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
-                               IVITile *tile, int32_t mv_scale)
+/**
+ *  Handle empty tiles by performing data copying and motion
+ *  compensation respectively.
+ *
+ *  @param[in]  avctx     ptr to the AVCodecContext
+ *  @param[in]  band      pointer to the band descriptor
+ *  @param[in]  tile      pointer to the tile descriptor
+ *  @param[in]  mv_scale  scaling factor for motion vectors
+ */
+static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
+                                  IVITile *tile, int32_t mv_scale)
 {
     int             x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;
     int             offs, mb_offset, row_offset;
@@ -506,10 +515,11 @@ void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
     void (*mc_no_delta_func)(int16_t *buf, const int16_t *ref_buf, uint32_t pitch,
                              int mc_type);
 
-    if( tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size) ){
-        av_log(avctx, AV_LOG_ERROR, "allocated tile size %d mismatches parameters %d in ff_ivi_process_empty_tile()\n",
+    if (tile->num_MBs != IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size)) {
+        av_log(avctx, AV_LOG_ERROR, "Allocated tile size %d mismatches "
+               "parameters %d in ivi_process_empty_tile()\n",
                tile->num_MBs, IVI_MBs_PER_TILE(tile->width, tile->height, band->mb_size));
-        return;
+        return AVERROR_INVALIDDATA;
     }
 
     offs       = tile->ypos * band->pitch + tile->xpos;
@@ -592,6 +602,8 @@ void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
             dst += band->pitch;
         }
     }
+
+    return 0;
 }
 
 
@@ -689,8 +701,10 @@ static int decode_band(IVI45DecContext *ctx, int plane_num,
         }
         tile->is_empty = get_bits1(&ctx->gb);
         if (tile->is_empty) {
-            ff_ivi_process_empty_tile(avctx, band, tile,
+            result = ivi_process_empty_tile(avctx, band, tile,
                                       (ctx->planes[0].bands[0].mb_size >> 3) - (band->mb_size >> 3));
+            if (result < 0)
+                break;
             av_dlog(avctx, "Empty tile encountered!\n");
         } else {
             tile->data_size = ff_ivi_dec_tile_data_size(&ctx->gb);

libavcodec/ivi_common.h

@@ -377,18 +377,6 @@ int  ff_ivi_dec_tile_data_size(GetBitContext *gb);
  */
 int  ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile);
 
-/**
- *  Handle empty tiles by performing data copying and motion
- *  compensation respectively.
- *
- *  @param[in]  avctx     ptr to the AVCodecContext
- *  @param[in]  band      pointer to the band descriptor
- *  @param[in]  tile      pointer to the tile descriptor
- *  @param[in]  mv_scale  scaling factor for motion vectors
- */
-void ff_ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
-                               IVITile *tile, int32_t mv_scale);
-
 /**
  *  Convert and output the current plane.
  *  This conversion is done by adding back the bias value of 128

libavcodec/wmalosslessdec.c

@@ -406,7 +406,8 @@ static void decode_ac_filter(WmallDecodeCtx *s)
     s->acfilter_scaling = get_bits(&s->gb, 4);
 
     for (i = 0; i < s->acfilter_order; i++)
-        s->acfilter_coeffs[i] = (s->acfilter_scaling ? get_bits(&s->gb, s->acfilter_scaling) : 0) + 1;
+        s->acfilter_coeffs[i] = (s->acfilter_scaling ?
+                                 get_bits(&s->gb, s->acfilter_scaling) : 0) + 1;
 }
 
 static void decode_mclms(WmallDecodeCtx *s)