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avcodec/mjpegdec: Avoid checks whose results are known at compile-time

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Namely the result of the check for smv_next_frame > 0 in
smv_process_frame().

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-12-07 15:15:42 +01:00
parent b640cda95d
commit ec2d582cb0
1 changed files with 18 additions and 21 deletions
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39
libavcodec/mjpegdec.c
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@ -2349,24 +2349,9 @@ static void reset_icc_profile(MJpegDecodeContext *s)
// SMV JPEG just stacks several output frames into one JPEG picture
// we handle that by setting up the cropping parameters appropriately
static int smv_process_frame(AVCodecContext *avctx, AVFrame *frame)
static void smv_process_frame(AVCodecContext *avctx, AVFrame *frame)
{
MJpegDecodeContext *s = avctx->priv_data;
int ret;
if (s->smv_next_frame > 0) {
av_assert0(s->smv_frame->buf[0]);
av_frame_unref(frame);
ret = av_frame_ref(frame, s->smv_frame);
if (ret < 0)
return ret;
} else {
av_assert0(frame->buf[0]);
av_frame_unref(s->smv_frame);
ret = av_frame_ref(s->smv_frame, frame);
if (ret < 0)
return ret;
}
av_assert0((s->smv_next_frame + 1) * avctx->height <= avctx->coded_height);
@ -2379,8 +2364,6 @@ static int smv_process_frame(AVCodecContext *avctx, AVFrame *frame)
if (s->smv_next_frame == 0)
av_frame_unref(s->smv_frame);
return 0;
}
static int mjpeg_get_packet(AVCodecContext *avctx)
@ -3055,14 +3038,28 @@ static int smvjpeg_receive_frame(AVCodecContext *avctx, AVFrame *frame)
MJpegDecodeContext *s = avctx->priv_data;
int ret;
if (s->smv_next_frame > 0)
return smv_process_frame(avctx, frame);
if (s->smv_next_frame > 0) {
av_assert0(s->smv_frame->buf[0]);
ret = av_frame_ref(frame, s->smv_frame);
if (ret < 0)
return ret;
smv_process_frame(avctx, frame);
return 0;
}
ret = ff_mjpeg_receive_frame(avctx, frame);
if (ret < 0)
return ret;
return smv_process_frame(avctx, frame);
av_assert0(frame->buf[0]);
av_frame_unref(s->smv_frame);
ret = av_frame_ref(s->smv_frame, frame);
if (ret < 0)
return ret;
smv_process_frame(avctx, frame);
return 0;
}
const FFCodec ff_smvjpeg_decoder = {