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vaapi_h264: Add encode quality option (for quality-speed tradeoff) 

Only supported on VAAPI 0.36 and higher.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Mark Thompson 2016-04-12 23:16:30 +01:00 committed by Anton Khirnov
parent 9629701ce9
commit fcf536b130
1 changed files with 28 additions and 0 deletions
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28
libavcodec/vaapi_encode_h264.c
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@ -113,10 +113,19 @@ typedef struct VAAPIEncodeH264Context {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterHRD hrd;
} hrd_params;
#if VA_CHECK_VERSION(0, 36, 0)
// Speed-quality tradeoff setting.
struct {
VAEncMiscParameterBuffer misc;
VAEncMiscParameterBufferQualityLevel quality;
} quality_params;
#endif
} VAAPIEncodeH264Context;
typedef struct VAAPIEncodeH264Options {
int qp;
int quality;
} VAAPIEncodeH264Options;
@ -801,6 +810,7 @@ static av_cold int vaapi_encode_h264_init_internal(AVCodecContext *avctx)
VAAPIEncodeContext *ctx = avctx->priv_data;
VAAPIEncodeH264Context *priv = ctx->priv_data;
VAAPIEncodeH264Options *opt = ctx->codec_options;
int i, err;
switch (avctx->profile) {
@ -869,6 +879,22 @@ static av_cold int vaapi_encode_h264_init_internal(AVCodecContext *avctx)
.value = ctx->va_rc_mode,
};
if (opt->quality > 0) {
#if VA_CHECK_VERSION(0, 36, 0)
priv->quality_params.misc.type =
VAEncMiscParameterTypeQualityLevel;
priv->quality_params.quality.quality_level = opt->quality;
ctx->global_params[ctx->nb_global_params] =
&priv->quality_params.misc;
ctx->global_params_size[ctx->nb_global_params++] =
sizeof(priv->quality_params);
#else
av_log(avctx, AV_LOG_WARNING, "The encode quality option is not "
"supported with this VAAPI version.\n");
#endif
}
ctx->nb_recon_frames = 20;
return 0;
@ -906,6 +932,8 @@ static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
static const AVOption vaapi_encode_h264_options[] = {
{ "qp", "Constant QP (for P frames; scaled by qfactor/qoffset for I/B)",
OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
{ "quality", "Set encode quality (trades off against speed, higher is faster)",
OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, FLAGS },
{ NULL },
};