Rename a vp9 only control with vp9e prefix

Also updated comments and doc to make it clear that the control is
supported in VP9 only.

Change-Id: I6f120b65135fc1185695e9e3dc29fbe0d430824b

vp9/vp9_cx_iface.c

@@ -694,7 +694,7 @@ static vpx_codec_err_t ctrl_set_rc_gf_cbr_boost_pct(
     vpx_codec_alg_priv_t *ctx, va_list args) {
   struct vp9_extracfg extra_cfg = ctx->extra_cfg;
   extra_cfg.gf_cbr_boost_pct =
-      CAST(VP8E_SET_GF_CBR_BOOST_PCT, args);
+      CAST(VP9E_SET_GF_CBR_BOOST_PCT, args);
   return update_extra_cfg(ctx, &extra_cfg);
 }
 
@@ -1387,7 +1387,7 @@ static vpx_codec_ctrl_fn_map_t encoder_ctrl_maps[] = {
   {VP8E_SET_CQ_LEVEL,                 ctrl_set_cq_level},
   {VP8E_SET_MAX_INTRA_BITRATE_PCT,    ctrl_set_rc_max_intra_bitrate_pct},
   {VP8E_SET_MAX_INTER_BITRATE_PCT,    ctrl_set_rc_max_inter_bitrate_pct},
-  {VP8E_SET_GF_CBR_BOOST_PCT,         ctrl_set_rc_gf_cbr_boost_pct},
+  {VP9E_SET_GF_CBR_BOOST_PCT,         ctrl_set_rc_gf_cbr_boost_pct},
   {VP9E_SET_LOSSLESS,                 ctrl_set_lossless},
   {VP9E_SET_FRAME_PARALLEL_DECODING,  ctrl_set_frame_parallel_decoding_mode},
   {VP9E_SET_AQ_MODE,                  ctrl_set_aq_mode},

vpx/vp8cx.h

@@ -124,9 +124,9 @@ extern vpx_codec_iface_t *vpx_codec_vp9_cx(void);
 #define VP8_EFLAG_NO_UPD_ENTROPY   (1<<20)
 
 
-/*!\brief VP8 encoder control functions
+/*!\brief VPx encoder control functions
  *
- * This set of macros define the control functions available for the VP8
+ * This set of macros define the control functions available for VPx
  * encoder interface.
  *
  * \sa #vpx_codec_control
@@ -223,8 +223,9 @@ enum vp8e_enc_control_id {
    * For example, to allow 100% more bits, i.e, 2X, in a golden frame
    * than average frame, set this to 100.
    *
+   * Supported in codecs: VP9
    */
-  VP8E_SET_GF_CBR_BOOST_PCT,
+  VP9E_SET_GF_CBR_BOOST_PCT,
 
   /*!\brief Codec control function to set the temporal layer id
    *
@@ -531,10 +532,10 @@ VPX_CTRL_USE_TYPE(VP9E_GET_SVC_LAYER_ID,  vpx_svc_layer_id_t *)
 VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTRA_BITRATE_PCT, unsigned int)
 VPX_CTRL_USE_TYPE(VP8E_SET_MAX_INTER_BITRATE_PCT, unsigned int)
 
-VPX_CTRL_USE_TYPE(VP8E_SET_GF_CBR_BOOST_PCT, unsigned int)
-
 VPX_CTRL_USE_TYPE(VP8E_SET_SCREEN_CONTENT_MODE, unsigned int)
 
+VPX_CTRL_USE_TYPE(VP9E_SET_GF_CBR_BOOST_PCT, unsigned int)
+
 VPX_CTRL_USE_TYPE(VP9E_SET_LOSSLESS, unsigned int)
 
 VPX_CTRL_USE_TYPE(VP9E_SET_FRAME_PARALLEL_DECODING, unsigned int)

vpxenc.c

@@ -457,7 +457,7 @@ static const int vp9_arg_ctrl_map[] = {
   VP9E_SET_TILE_COLUMNS, VP9E_SET_TILE_ROWS,
   VP8E_SET_ARNR_MAXFRAMES, VP8E_SET_ARNR_STRENGTH, VP8E_SET_ARNR_TYPE,
   VP8E_SET_TUNING, VP8E_SET_CQ_LEVEL, VP8E_SET_MAX_INTRA_BITRATE_PCT,
-  VP8E_SET_MAX_INTER_BITRATE_PCT, VP8E_SET_GF_CBR_BOOST_PCT,
+  VP8E_SET_MAX_INTER_BITRATE_PCT, VP9E_SET_GF_CBR_BOOST_PCT,
   VP9E_SET_LOSSLESS, VP9E_SET_FRAME_PARALLEL_DECODING, VP9E_SET_AQ_MODE,
   VP9E_SET_FRAME_PERIODIC_BOOST, VP9E_SET_NOISE_SENSITIVITY,
   VP9E_SET_TUNE_CONTENT, VP9E_SET_COLOR_SPACE,