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avcodec/jpeglsenc: Check for memory allocation failures 

Fixes CID1271044

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-22 13:43:52 +01:00
parent f9d24ee1dc
commit 48214956b2
1 changed files with 16 additions and 7 deletions
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23
libavcodec/jpeglsenc.c
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@ -253,8 +253,9 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
const int near = avctx->prediction_method;
PutBitContext pb, pb2;
GetBitContext gb;
uint8_t *buf2, *zero, *cur, *last;
JLSState *state;
uint8_t *buf2 = NULL;
uint8_t *zero, *cur, *last;
JLSState *state = NULL;
int i, size, ret;
int comps;
@ -269,6 +270,8 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
return ret;
buf2 = av_malloc(pkt->size);
if (!buf2)
goto fail;
init_put_bits(&pb, pkt->data, pkt->size);
init_put_bits(&pb2, buf2, pkt->size);
@ -299,6 +302,8 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
put_bits(&pb, 8, 0); // point transform: none
state = av_mallocz(sizeof(JLSState));
if (!state)
goto fail;
/* initialize JPEG-LS state from JPEG parameters */
state->near = near;
state->bpp = (avctx->pix_fmt == AV_PIX_FMT_GRAY16) ? 16 : 8;
@ -308,10 +313,9 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
ls_store_lse(state, &pb);
zero = av_mallocz(FFABS(p->linesize[0]));
if (!zero) {
av_free(state);
return AVERROR(ENOMEM);
}
if (!zero)
goto fail;
last = zero;
cur = p->data[0];
if (avctx->pix_fmt == AV_PIX_FMT_GRAY8) {
@ -384,7 +388,7 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
}
}
avpriv_align_put_bits(&pb);
av_free(buf2);
av_freep(&buf2);
/* End of image */
put_marker(&pb, EOI);
@ -396,6 +400,11 @@ static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt,
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
fail:
av_freep(&buf2);
av_freep(&state);
return AVERROR(ENOMEM);
}
static av_cold int encode_close(AVCodecContext *avctx)