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Merge remote-tracking branch 'qatar/master'

Browse Source 
* qatar/master:
  smacker: Sanity check huffman tables found in the headers.
  smacker: remove dead store
  qdm2: Check data block size for bytes to bits overflow.
  mxfdec: Fix files with essence containers larger than 2 GiB.
  mxfdec: Employ correct printf conversion specifiers for POSIX int types.
  vc1: always read the bfraction element for interlaced fields
  fate: add XWD image regression test
  lavf: prevent infinite loops while flushing in avformat_find_stream_info
  matroskadec: Pad AAC extradata.
  ismindex: Fix build on mingw

Conflicts:
	libavformat/mxfdec.c
	libavformat/utils.c
	tests/lavf-regression.sh

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-01-27 01:42:53 +01:00
commit 01fcbdf9ce
6 changed files with 55 additions and 36 deletions
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26
libavcodec/smacker.c
View File

@ -128,12 +128,12 @@ static int smacker_decode_tree(GetBitContext *gb, HuffContext *hc, uint32_t pref
*/
static int smacker_decode_bigtree(GetBitContext *gb, HuffContext *hc, DBCtx *ctx)
{
if (hc->current + 1 >= hc->length) {
av_log(NULL, AV_LOG_ERROR, "Tree size exceeded!\n");
return -1;
}
if(!get_bits1(gb)){ //Leaf
int val, i1, i2, b1, b2;
if(hc->current >= hc->length){
av_log(NULL, AV_LOG_ERROR, "Tree size exceeded!\n");
return -1;
}
b1 = get_bits_count(gb);
i1 = ctx->v1->table ? get_vlc2(gb, ctx->v1->table, SMKTREE_BITS, 3) : 0;
b1 = get_bits_count(gb) - b1;
@ -157,7 +157,7 @@ static int smacker_decode_bigtree(GetBitContext *gb, HuffContext *hc, DBCtx *ctx
hc->values[hc->current++] = val;
return 1;
} else { //Node
int r = 0, t;
int r = 0, r_new, t;
t = hc->current++;
r = smacker_decode_bigtree(gb, hc, ctx);
@ -165,8 +165,10 @@ static int smacker_decode_bigtree(GetBitContext *gb, HuffContext *hc, DBCtx *ctx
return r;
hc->values[t] = SMK_NODE | r;
r++;
r += smacker_decode_bigtree(gb, hc, ctx);
return r;
r_new = smacker_decode_bigtree(gb, hc, ctx);
if (r_new < 0)
return r_new;
return r + r_new;
}
}
@ -181,6 +183,7 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
VLC vlc[2];
int escapes[3];
DBCtx ctx;
int err = 0;
if(size >= UINT_MAX>>4){ // (((size + 3) >> 2) + 3) << 2 must not overflow
av_log(smk->avctx, AV_LOG_ERROR, "size too large\n");
@ -254,7 +257,8 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
huff.current = 0;
huff.values = av_mallocz(huff.length * sizeof(int));
smacker_decode_bigtree(gb, &huff, &ctx);
if (smacker_decode_bigtree(gb, &huff, &ctx) < 0)
err = -1;
skip_bits1(gb);
if(ctx.last[0] == -1) ctx.last[0] = huff.current++;
if(ctx.last[1] == -1) ctx.last[1] = huff.current++;
@ -278,7 +282,7 @@ static int smacker_decode_header_tree(SmackVContext *smk, GetBitContext *gb, int
av_free(tmp2.lengths);
av_free(tmp2.values);
return 0;
return err;
}
static int decode_header_trees(SmackVContext *smk) {
@ -339,16 +343,14 @@ static av_always_inline void last_reset(int *recode, int *last) {
/* get code and update history */
static av_always_inline int smk_get_code(GetBitContext *gb, int *recode, int *last) {
register int *table = recode;
int v, b;
int v;
b = get_bits_count(gb);
while(*table & SMK_NODE) {
if(get_bits1(gb))
table += (*table) & (~SMK_NODE);
table++;
}
v = *table;
b = get_bits_count(gb) - b;
if(v != recode[last[0]]) {
recode[last[2]] = recode[last[1]];

26
libavcodec/vc1.c
View File

@ -901,20 +901,18 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
if (v->field_mode) {
if (!v->refdist_flag)
v->refdist = 0;
else {
if ((v->s.pict_type != AV_PICTURE_TYPE_B)
&& (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
v->refdist = get_bits(gb, 2);
if (v->refdist == 3)
v->refdist += get_unary(gb, 0, 16);
} else {
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
v->frfd = (v->bfraction * v->refdist) >> 8;
v->brfd = v->refdist - v->frfd - 1;
if (v->brfd < 0)
v->brfd = 0;
}
else if ((v->s.pict_type != AV_PICTURE_TYPE_B) && (v->s.pict_type != AV_PICTURE_TYPE_BI)) {
v->refdist = get_bits(gb, 2);
if (v->refdist == 3)
v->refdist += get_unary(gb, 0, 16);
}
if ((v->s.pict_type == AV_PICTURE_TYPE_B) || (v->s.pict_type == AV_PICTURE_TYPE_BI)) {
v->bfraction_lut_index = get_vlc2(gb, ff_vc1_bfraction_vlc.table, VC1_BFRACTION_VLC_BITS, 1);
v->bfraction = ff_vc1_bfraction_lut[v->bfraction_lut_index];
v->frfd = (v->bfraction * v->refdist) >> 8;
v->brfd = v->refdist - v->frfd - 1;
if (v->brfd < 0)
v->brfd = 0;
}
goto parse_common_info;
}

15
libavformat/mxfdec.c
View File

@ -471,15 +471,18 @@ static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size
/* some files don'thave FooterPartition set in every partition */
if (footer_partition) {
if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
av_log(mxf->fc, AV_LOG_ERROR, "inconsistent FooterPartition value: %" PRIi64 " != %" PRIi64 "\n",
av_log(mxf->fc, AV_LOG_ERROR,
"inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
mxf->footer_partition, footer_partition);
} else {
mxf->footer_partition = footer_partition;
}
}
av_dlog(mxf->fc, "PartitionPack: ThisPartition = 0x%" PRIx64 ", PreviousPartition = 0x%" PRIx64 ", "
"FooterPartition = 0x%" PRIx64 ", IndexSID = %i, BodySID = %i\n",
av_dlog(mxf->fc,
"PartitionPack: ThisPartition = 0x%"PRIX64
", PreviousPartition = 0x%"PRIX64", "
"FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
partition->this_partition,
partition->previous_partition, footer_partition,
partition->index_sid, partition->body_sid);
@ -959,7 +962,8 @@ static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t of
offset -= p->essence_length;
}
av_log(mxf->fc, AV_LOG_ERROR, "failed to find absolute offset of %" PRIx64" in BodySID %i - partial file?\n",
av_log(mxf->fc, AV_LOG_ERROR,
"failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
offset_in, body_sid);
return AVERROR_INVALIDDATA;
@ -1602,7 +1606,8 @@ static void mxf_compute_essence_containers(MXFContext *mxf)
if (p->essence_length < 0) {
/* next ThisPartition < essence_offset */
p->essence_length = 0;
av_log(mxf->fc, AV_LOG_ERROR, "partition %i: bad ThisPartition = %" PRIx64 "\n",
av_log(mxf->fc, AV_LOG_ERROR,
"partition %i: bad ThisPartition = %"PRIX64"\n",
x+1, mxf->partitions[x+1].this_partition);
}
}

17
libavformat/utils.c
View File

@ -2236,6 +2236,7 @@ static int has_decode_delay_been_guessed(AVStream *st)
st->info->nb_decoded_frames >= 6;
}
/* returns 1 or 0 if or if not decoded data was returned, or a negative error */
static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
{
AVCodec *codec;
@ -2283,6 +2284,7 @@ static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **option
st->info->nb_decoded_frames++;
pkt.data += ret;
pkt.size -= ret;
ret = got_picture;
}
}
if(!pkt.data && !got_picture)
@ -2589,16 +2591,21 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
st = ic->streams[i];
/* flush the decoders */
while ((err = try_decode_frame(st, &empty_pkt,
do {
err = try_decode_frame(st, &empty_pkt,
(options && i < orig_nb_streams) ?
&options[i] : NULL)) >= 0)
if (has_codec_parameters(st->codec))
break;
&options[i] : NULL);
} while (err > 0 && !has_codec_parameters(st->codec));
if (err < 0) {
av_log(ic, AV_LOG_INFO,
"decoding for stream %d failed\n", st->index);
}
if (!has_codec_parameters(st->codec)){
char buf[256];
avcodec_string(buf, sizeof(buf), st->codec, 0);
av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
av_log(ic, AV_LOG_WARNING,
"Could not find codec parameters (%s)\n", buf);
} else {
ret = 0;
}

4
tests/lavf-regression.sh
View File

@ -187,6 +187,10 @@ if [ -n "$do_dpx" ] ; then
do_image_formats dpx
fi
if [ -n "$do_xwd" ] ; then
do_image_formats xwd
fi
# audio only
if [ -n "$do_wav" ] ; then

3
tests/ref/lavf/xwd Normal file
View File

@ -0,0 +1,3 @@
0ab6cd4fe5fe85a3f3e87508c2eadfa0 *./tests/data/images/xwd/02.xwd
./tests/data/images/xwd/%02d.xwd CRC=0x6da01946
304239 ./tests/data/images/xwd/02.xwd