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lavc/videotoolboxenc: Add realtime encoding property

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Hint to the encoder that encoding should be done in real-time, even at the
expense of quality.

Signed-off-by: Rick Kern <kernrj@gmail.com>
This commit is contained in:
Rick Kern 2016-04-27 10:53:11 -04:00 committed by wm4
parent 272dd437bc
commit ca429e7253
1 changed files with 14 additions and 0 deletions
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14
libavcodec/videotoolboxenc.c
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@ -76,6 +76,7 @@ typedef struct VTEncContext {
int64_t profile;
int64_t level;
int64_t entropy;
int64_t realtime;
int64_t allow_sw;
@ -747,6 +748,16 @@ static av_cold int vtenc_init(AVCodecContext *avctx)
}
}
if (vtctx->realtime) {
status = VTSessionSetProperty(vtctx->session,
kVTCompressionPropertyKey_RealTime,
kCFBooleanTrue);
if (status) {
av_log(avctx, AV_LOG_ERROR, "Error setting realtime property: %d\n", status);
}
}
status = VTCompressionSessionPrepareToEncodeFrames(vtctx->session);
if (status) {
av_log(avctx, AV_LOG_ERROR, "Error: cannot prepare encoder: %d\n", status);
@ -1520,6 +1531,9 @@ static const AVOption options[] = {
{ "cabac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
{ "ac", "CABAC entropy coding", 0, AV_OPT_TYPE_CONST, { .i64 = VT_CABAC }, INT_MIN, INT_MAX, VE, "coder" },
{ "realtime", "Hint that encoding should happen in real-time if not faster (e.g. capturing from camera).",
OFFSET(realtime), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VE },
{ NULL },
};