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mxfenc: switch to av_reallocp_array() and check allocation errors 

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Alexandra Khirnova 2013-08-02 19:21:24 +02:00 committed by Anton Khirnov
parent a10c4ce24b
commit 7684a36113
1 changed files with 29 additions and 18 deletions
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47
libavformat/mxfenc.c
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@ -1182,7 +1182,7 @@ static void mxf_write_klv_fill(AVFormatContext *s)
}
}
static void mxf_write_partition(AVFormatContext *s, int bodysid,
static int mxf_write_partition(AVFormatContext *s, int bodysid,
int indexsid,
const uint8_t *key, int write_metadata)
{
@ -1191,6 +1191,7 @@ static void mxf_write_partition(AVFormatContext *s, int bodysid,
int64_t header_byte_count_offset;
unsigned index_byte_count = 0;
uint64_t partition_offset = avio_tell(pb);
int err;
if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
@ -1205,10 +1206,11 @@ static void mxf_write_partition(AVFormatContext *s, int bodysid,
}
if (!memcmp(key, body_partition_key, 16)) {
mxf->body_partition_offset =
av_realloc(mxf->body_partition_offset,
(mxf->body_partitions_count+1)*
sizeof(*mxf->body_partition_offset));
if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
sizeof(*mxf->body_partition_offset))) < 0) {
mxf->body_partitions_count = 0;
return err;
}
mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
}
@ -1273,6 +1275,8 @@ static void mxf_write_partition(AVFormatContext *s, int bodysid,
}
avio_flush(pb);
return 0;
}
static const UID mxf_mpeg2_codec_uls[] = {
@ -1673,13 +1677,14 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
AVStream *st = s->streams[pkt->stream_index];
MXFStreamContext *sc = st->priv_data;
MXFIndexEntry ie = {0};
int err;
if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
mxf->index_entries = av_realloc(mxf->index_entries,
(mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
if (!mxf->index_entries) {
if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
+ EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
mxf->edit_units_count = 0;
av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
return -1;
return err;
}
}
@ -1692,11 +1697,13 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
if (!mxf->header_written) {
if (mxf->edit_unit_byte_count) {
mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
return err;
mxf_write_klv_fill(s);
mxf_write_index_table_segment(s);
} else {
mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
return err;
}
mxf->header_written = 1;
}
@ -1706,8 +1713,8 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
(!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
!(ie.flags & 0x33)) { // I frame, Gop start
mxf_write_klv_fill(s);
mxf_write_partition(s, 1, 2, body_partition_key, 0);
if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
return err;
mxf_write_klv_fill(s);
mxf_write_index_table_segment(s);
}
@ -1776,16 +1783,18 @@ static int mxf_write_footer(AVFormatContext *s)
{
MXFContext *mxf = s->priv_data;
AVIOContext *pb = s->pb;
int err;
mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
mxf_write_klv_fill(s);
mxf->footer_partition_offset = avio_tell(pb);
if (mxf->edit_unit_byte_count) { // no need to repeat index
mxf_write_partition(s, 0, 0, footer_partition_key, 0);
if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
return err;
} else {
mxf_write_partition(s, 0, 2, footer_partition_key, 0);
if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
return err;
mxf_write_klv_fill(s);
mxf_write_index_table_segment(s);
}
@ -1796,11 +1805,13 @@ static int mxf_write_footer(AVFormatContext *s)
if (s->pb->seekable) {
avio_seek(pb, 0, SEEK_SET);
if (mxf->edit_unit_byte_count) {
mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
return err;
mxf_write_klv_fill(s);
mxf_write_index_table_segment(s);
} else {
mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
return err;
}
}