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| author | Mark Thompson <sw@jkqxz.net> | 2016-05-17 23:08:57 +0100 |
|---|---|---|
| committer | Mark Thompson <sw@jkqxz.net> | 2016-05-27 10:57:00 +0100 |
| commit | a86aa16088ad7f22a8918d71adb8c040d6033d84 (patch) | |
| tree | d9a88039d115cd3f86ddd427b8db14baf24422d7 | |
| parent | b51c7c6b8a5b35cfd06cb9655f9ec4c9f0ddd81b (diff) | |
| download | ffmpeg-a86aa16088ad7f22a8918d71adb8c040d6033d84.tar.gz | |
vaapi_h264: Add trivial support for low-power encoding
Experimental; requires Skylake and VAAPI 0.39.1 (not yet released).
Also increases the allowed range of the quality option - in low-power
mode, the Intel driver supports levels 1-8 (and 0 meaning default).
| -rw-r--r-- | libavcodec/vaapi_encode_h264.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/libavcodec/vaapi_encode_h264.c b/libavcodec/vaapi_encode_h264.c index 7819788cf7..2341b123fc 100644 --- a/libavcodec/vaapi_encode_h264.c +++ b/libavcodec/vaapi_encode_h264.c @@ -126,6 +126,7 @@ typedef struct VAAPIEncodeH264Context { typedef struct VAAPIEncodeH264Options { int qp; int quality; + int low_power; } VAAPIEncodeH264Options; @@ -854,7 +855,17 @@ static av_cold int vaapi_encode_h264_init_internal(AVCodecContext *avctx) avctx->profile); return AVERROR(EINVAL); } - ctx->va_entrypoint = VAEntrypointEncSlice; + if (opt->low_power) { +#if VA_CHECK_VERSION(0, 39, 1) + ctx->va_entrypoint = VAEntrypointEncSliceLP; +#else + av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not " + "supported with this VAAPI version.\n"); + return AVERROR(EINVAL); +#endif + } else { + ctx->va_entrypoint = VAEntrypointEncSlice; + } ctx->input_width = avctx->width; ctx->input_height = avctx->height; @@ -937,7 +948,10 @@ 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 }, + OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS }, + { "low_power", "Use low-power encoding mode (experimental: only supported " + "on some platforms, does not support all features)", + OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS }, { NULL }, }; |