[FFmpeg-devel] [PATCH v5 08/20] lavfi/vpp_qsv: allow user to set scale_mode with constant

[Haihao Xiang]

In addtion, update the help text for scale_mode

$ ffmpeg -hwaccel qsv -c:v h264_qsv -i input.h264 -vf \
"vpp_qsv=scale_mode=hq" -f null -
---
 libavfilter/vf_vpp_qsv.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_vpp_qsv.c b/libavfilter/vf_vpp_qsv.c
index e8cba3c360..ea4948f2fe 100644
--- a/libavfilter/vf_vpp_qsv.c
+++ b/libavfilter/vf_vpp_qsv.c
@@ -138,7 +138,17 @@ static const AVOption options[] = {
     { "height", "Output video height(0=input video height, -1=keep input video aspect)", OFFSET(oh), AV_OPT_TYPE_STRING, { .str="w*ch/cw" }, 0, 255, .flags = FLAGS },
     { "format", "Output pixel format", OFFSET(output_format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
     { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS },
-    { "scale_mode", "scale mode: 0=auto, 1=low power, 2=high quality", OFFSET(scale_mode), AV_OPT_TYPE_INT, { .i64 = MFX_SCALING_MODE_DEFAULT }, MFX_SCALING_MODE_DEFAULT, MFX_SCALING_MODE_QUALITY, .flags = FLAGS, "scale mode" },
+#if QSV_HAVE_SCALING_CONFIG
+    { "scale_mode", "scale mode", OFFSET(scale_mode), AV_OPT_TYPE_INT, { .i64 = MFX_SCALING_MODE_DEFAULT }, MFX_SCALING_MODE_DEFAULT, MFX_SCALING_MODE_QUALITY, .flags = FLAGS, "scale mode" },
+    { "auto",      "auto mode",             0,    AV_OPT_TYPE_CONST,  { .i64 = MFX_SCALING_MODE_DEFAULT},  INT_MIN, INT_MAX, FLAGS, "scale mode"},
+    { "low_power", "low power mode",        0,    AV_OPT_TYPE_CONST,  { .i64 = MFX_SCALING_MODE_LOWPOWER}, INT_MIN, INT_MAX, FLAGS, "scale mode"},
+    { "hq",        "high quality mode",     0,    AV_OPT_TYPE_CONST,  { .i64 = MFX_SCALING_MODE_QUALITY},  INT_MIN, INT_MAX, FLAGS, "scale mode"},
+#else
+    { "scale_mode", "(not supported)",        OFFSET(scale_mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS, "scale mode" },
+    { "auto",      "",                      0,    AV_OPT_TYPE_CONST,  { .i64 = 0}, 0,   0,     FLAGS, "scale mode"},
+    { "low_power", "",                      0,    AV_OPT_TYPE_CONST,  { .i64 = 1}, 0,   0,     FLAGS, "scale mode"},
+    { "hq",        "",                      0,    AV_OPT_TYPE_CONST,  { .i64 = 2}, 0,   0,     FLAGS, "scale mode"},
+#endif
 
     { NULL }
 };
-- 
2.17.1