#10210: On Windows with x86 build, calling avcodec_send_packet does not free FPU
registers
-------------------------------------+-------------------------------------
Reporter: Kevin | Owner: (none)
Coulombe |
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: avcodec FPU | Blocked By:
fld ST0 x87 |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by Seb):
Ffmpeg releases the FPU registers after calling `codec->cb.decode()` (in
`decode_simple_internal()`).
It would seem logical to do the same after calling
`codec->cb.receive_frame()` since there is no guarantee that the codec's
implementation will do it. Something along the lines of:
{{{
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -547,6 +547,7 @@ static int
decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
if (codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_FRAME) {
ret = codec->cb.receive_frame(avctx, frame);
+ emms_c();
} else
ret = decode_simple_receive_frame(avctx, frame);
}}}
While I cannot reproduce the issue with the JPEG image since the MJPEG
decoder is now based on `decode`, 10 codecs are still implementing
`receive_frame`.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10210#comment:9>
FFmpeg <https://ffmpeg.org>
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