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avcodec/roqvideoenc: fix infinite lambda increasing loop

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The threshold was choosen so that no further size decrease happened with larger lambda
with the test video.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-07-08 17:05:27 +02:00
parent a981d1b6aa
commit fe4c76b3d0
1 changed files with 9 additions and 2 deletions
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11
libavcodec/roqvideoenc.c
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@ -881,7 +881,7 @@ static void generate_new_codebooks(RoqContext *enc, RoqTempdata *tempData)
av_free(results4);
}
static void roq_encode_video(RoqContext *enc)
static int roq_encode_video(RoqContext *enc)
{
RoqTempdata *tempData = enc->tmpData;
int i;
@ -903,6 +903,10 @@ static void roq_encode_video(RoqContext *enc)
/* Quake 3 can't handle chunks bigger than 65535 bytes */
if (tempData->mainChunkSize/8 > 65535 && enc->quake3_compat) {
if (enc->lambda > 100000) {
av_log(enc->avctx, AV_LOG_ERROR, "Cannot encode video in Quake compatible form\n");
return AVERROR(EINVAL);
}
av_log(enc->avctx, AV_LOG_ERROR,
"Warning, generated a frame too big for Quake (%d > 65535), "
"now switching to a bigger qscale value.\n",
@ -936,6 +940,8 @@ static void roq_encode_video(RoqContext *enc)
av_free(tempData->closest_cb2);
enc->framesSinceKeyframe++;
return 0;
}
static av_cold int roq_encode_end(AVCodecContext *avctx)
@ -1064,7 +1070,8 @@ static int roq_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
}
/* Encode the actual frame */
roq_encode_video(enc);
if ((ret = roq_encode_video(enc)) < 0)
return ret;
pkt->size = enc->out_buf - pkt->data;
if (enc->framesSinceKeyframe == 1)