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mpegvideo: remove abort() in ff_find_unused_picture()

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Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Andrey Utkin 2011-12-08 13:56:29 +02:00 committed by Luca Barbato
parent 71ce76027d
commit 4f820131fa
5 changed files with 19 additions and 15 deletions
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2
libavcodec/h261dec.c
View File

@ -572,6 +572,8 @@ retry:
//we need to set current_picture_ptr before reading the header, otherwise we cannot store anyting im there
if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
int i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
s->current_picture_ptr= &s->picture[i];
}

2
libavcodec/h263dec.c
View File

@ -398,6 +398,8 @@ retry:
* otherwise we cannot store anyting in there */
if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
int i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
s->current_picture_ptr= &s->picture[i];
}

22
libavcodec/mpegvideo.c
View File

@ -1144,21 +1144,7 @@ int ff_find_unused_picture(MpegEncContext *s, int shared)
}
}
av_log(s->avctx, AV_LOG_FATAL,
"Internal error, picture buffer overflow\n");
/* We could return -1, but the codec would crash trying to draw into a
* non-existing frame anyway. This is safer than waiting for a random crash.
* Also the return of this is never useful, an encoder must only allocate
* as much as allowed in the specification. This has no relationship to how
* much libavcodec could allocate (and MAX_PICTURE_COUNT is always large
* enough for such valid streams).
* Plus, a decoder has to check stream validity and remove frames if too
* many reference frames are around. Waiting for "OOM" is not correct at
* all. Similarly, missing reference frames have to be replaced by
* interpolated/MC frames, anything else is a bug in the codec ...
*/
abort();
return -1;
return AVERROR_INVALIDDATA;
}
static void update_noise_reduction(MpegEncContext *s){
@ -1216,6 +1202,8 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
pic= s->current_picture_ptr; //we already have a unused image (maybe it was set before reading the header)
else{
i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
pic= &s->picture[i];
}
@ -1271,6 +1259,8 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
/* Allocate a dummy frame */
i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
s->last_picture_ptr= &s->picture[i];
if(ff_alloc_picture(s, s->last_picture_ptr, 0) < 0)
return -1;
@ -1280,6 +1270,8 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
if ((s->next_picture_ptr == NULL || s->next_picture_ptr->f.data[0] == NULL) && s->pict_type == AV_PICTURE_TYPE_B) {
/* Allocate a dummy frame */
i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
s->next_picture_ptr= &s->picture[i];
if(ff_alloc_picture(s, s->next_picture_ptr, 0) < 0)
return -1;

6
libavcodec/mpegvideo_enc.c
View File

@ -858,6 +858,8 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
if(direct){
i= ff_find_unused_picture(s, 1);
if (i < 0)
return i;
pic= (AVFrame*)&s->picture[i];
pic->reference= 3;
@ -871,6 +873,8 @@ static int load_input_picture(MpegEncContext *s, AVFrame *pic_arg){
}
}else{
i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
pic= (AVFrame*)&s->picture[i];
pic->reference= 3;
@ -1200,6 +1204,8 @@ no_output_pic:
// input is a shared pix, so we can't modifiy it -> alloc a new one & ensure that the shared one is reuseable
int i= ff_find_unused_picture(s, 0);
if (i < 0)
return i;
Picture *pic= &s->picture[i];
pic->f.reference = s->reordered_input_picture[0]->f.reference;

2
libavcodec/vc1dec.c
View File

@ -5579,6 +5579,8 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
* otherwise we cannot store anything in there. */
if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) {
int i = ff_find_unused_picture(s, 0);
if (i < 0)
goto err;
s->current_picture_ptr = &s->picture[i];
}