[FFmpeg-cvslog] avcodec/parser: reset indexes on realloc failure

[Michael Niedermayer]

ffmpeg | branch: release/1.1 | Michael Niedermayer <michaelni at gmx.at> | Thu Sep 26 21:03:48 2013 +0200| [0efb4ff86c200fad9da910ed7adaf3bc90793694] | committer: Michael Niedermayer

avcodec/parser: reset indexes on realloc failure

Fixes Ticket2982

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit f31011e9abfb2ae75bb32bc44e2c34194c8dc40a)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0efb4ff86c200fad9da910ed7adaf3bc90793694
---

 libavcodec/parser.c |   10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libavcodec/parser.c b/libavcodec/parser.c
index f7cb5cf..c30b43e 100644
--- a/libavcodec/parser.c
+++ b/libavcodec/parser.c
@@ -235,8 +235,10 @@ int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_s
     if(next == END_NOT_FOUND){
         void* new_buffer = av_fast_realloc(pc->buffer, &pc->buffer_size, (*buf_size) + pc->index + FF_INPUT_BUFFER_PADDING_SIZE);
 
-        if(!new_buffer)
+        if(!new_buffer) {
+            pc->index = 0;
             return AVERROR(ENOMEM);
+        }
         pc->buffer = new_buffer;
         memcpy(&pc->buffer[pc->index], *buf, *buf_size);
         pc->index += *buf_size;
@@ -249,9 +251,11 @@ int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_s
     /* append to buffer */
     if(pc->index){
         void* new_buffer = av_fast_realloc(pc->buffer, &pc->buffer_size, next + pc->index + FF_INPUT_BUFFER_PADDING_SIZE);
-
-        if(!new_buffer)
+        if(!new_buffer) {
+            pc->overread_index =
+            pc->index = 0;
             return AVERROR(ENOMEM);
+        }
         pc->buffer = new_buffer;
         if (next > -FF_INPUT_BUFFER_PADDING_SIZE)
             memcpy(&pc->buffer[pc->index], *buf,