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avformat/utils: functions that add entries should not destroy the whole list on failure 

The caller does not expect this, and in case of adding new streams would then
not even be able to deallocate them anymore.

This reverts a hunk from "avformat: Use av_reallocp_array() where suitable"

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-11 12:13:44 +02:00
parent 5ca39a0b89
commit 8c9d6ee4f2
1 changed files with 10 additions and 8 deletions
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18
libavformat/utils.c
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@ -3296,11 +3296,14 @@ AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
{
AVStream *st;
int i;
AVStream **streams;
if (av_reallocp_array(&s->streams, s->nb_streams + 1, sizeof(*s->streams)) < 0) {
s->nb_streams = 0;
if (s->nb_streams >= INT_MAX/sizeof(*streams))
return NULL;
}
streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
if (!streams)
return NULL;
s->streams = streams;
st = av_mallocz(sizeof(AVStream));
if (!st)
@ -3404,6 +3407,7 @@ void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
{
int i, j;
AVProgram *program=NULL;
void *tmp;
if (idx >= ac->nb_streams) {
av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
@ -3418,12 +3422,10 @@ void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int i
if(program->stream_index[j] == idx)
return;
if (av_reallocp_array(&program->stream_index,
program->nb_stream_indexes + 1,
sizeof(*program->stream_index)) < 0) {
program->nb_stream_indexes = 0;
tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
if(!tmp)
return;
}
program->stream_index = tmp;
program->stream_index[program->nb_stream_indexes++] = idx;
return;
}