vaapi_encode: Add common options between all encoders

The only common option here is low_power - it was previously supported
for H.264 only, that specific option is removed.

doc/encoders.texi

@@ -2599,6 +2599,18 @@ Size / quality tradeoff: higher values are smaller / worse quality.
 @option{b_qoffset} / @option{b_quant_offset}
 @end itemize
 
+All encoders support the following options:
+@itemize
+@item
+@option{low_power}
+
+Some drivers/platforms offer a second encoder for some codecs intended to use
+less power than the default encoder; setting this option will attempt to use
+that encoder.  Note that it may support a reduced feature set, so some other
+options may not be available in this mode.
+@end itemize
+
+Each encoder also has its own specific options:
 @table @option
 
 @item h264_vaapi
@@ -2606,8 +2618,6 @@ Size / quality tradeoff: higher values are smaller / worse quality.
 @option{level} sets the value of @emph{level_idc}.
 
 @table @option
-@item low_power
-Use low-power encoding mode.
 @item coder
 Set entropy encoder (default is @emph{cabac}).  Possible values:
 

libavcodec/vaapi_encode.h

@@ -298,4 +298,13 @@ int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt,
 int ff_vaapi_encode_init(AVCodecContext *avctx);
 int ff_vaapi_encode_close(AVCodecContext *avctx);
 
+
+#define VAAPI_ENCODE_COMMON_OPTIONS \
+    { "low_power", \
+      "Use low-power encoding mode (only available on some platforms; " \
+      "may not support all encoding features)", \
+      OFFSET(common.low_power), AV_OPT_TYPE_BOOL, \
+      { .i64 = 0 }, 0, 1, FLAGS }
+
+
 #endif /* AVCODEC_VAAPI_ENCODE_H */

libavcodec/vaapi_encode_h264.c

@@ -52,7 +52,6 @@ typedef struct VAAPIEncodeH264Context {
     // User options.
     int qp;
     int quality;
-    int low_power;
     int coder;
     int aud;
     int sei;
@@ -936,8 +935,6 @@ static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
         return AVERROR_PATCHWELCOME;
     }
 
-    ctx->low_power = priv->low_power;
-
     if (avctx->bit_rate > 0) {
         if (avctx->rc_max_rate == avctx->bit_rate)
             ctx->va_rc_mode = VA_RC_CBR;
@@ -970,13 +967,12 @@ static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
 #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)
 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 static const AVOption vaapi_encode_h264_options[] = {
+    VAAPI_ENCODE_COMMON_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, 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 },
     { "coder", "Entropy coder type",
       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },

libavcodec/vaapi_encode_h265.c

@@ -1099,6 +1099,8 @@ static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)
 #define OFFSET(x) offsetof(VAAPIEncodeH265Context, x)
 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 static const AVOption vaapi_encode_h265_options[] = {
+    VAAPI_ENCODE_COMMON_OPTIONS,
+
     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, 52, FLAGS },
 

libavcodec/vaapi_encode_vp8.c

@@ -228,6 +228,7 @@ static av_cold int vaapi_encode_vp8_init(AVCodecContext *avctx)
 #define OFFSET(x) offsetof(VAAPIEncodeVP8Context, x)
 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 static const AVOption vaapi_encode_vp8_options[] = {
+    VAAPI_ENCODE_COMMON_OPTIONS,
     { "loop_filter_level", "Loop filter level",
       OFFSET(loop_filter_level), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 63, FLAGS },
     { "loop_filter_sharpness", "Loop filter sharpness",

libavcodec/vaapi_encode_vp9.c

@@ -251,6 +251,7 @@ static av_cold int vaapi_encode_vp9_init(AVCodecContext *avctx)
 #define OFFSET(x) offsetof(VAAPIEncodeVP9Context, x)
 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 static const AVOption vaapi_encode_vp9_options[] = {
+    VAAPI_ENCODE_COMMON_OPTIONS,
     { "loop_filter_level", "Loop filter level",
       OFFSET(loop_filter_level), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 63, FLAGS },
     { "loop_filter_sharpness", "Loop filter sharpness",