avcodec/libsvtav1: give svtav1-params priority over avctx values

If the svt equivalent option to an avctx AVOption is passed by the user
then it should have priority. The exception are fields like dimensions, bitdepth
and pixel format, which must match what lavc will feed the encoder after init.

This addresses libsvt-av1 issue #1858.

Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/libsvtav1.c

@@ -178,6 +178,9 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
             param->rate_control_mode = 1;
         else
             param->rate_control_mode = 2;
+
+        param->max_qp_allowed       = avctx->qmax;
+        param->min_qp_allowed       = avctx->qmin;
     }
     param->max_bit_rate             = avctx->rc_max_rate;
     param->vbv_bufsize              = avctx->rc_buffer_size;
@@ -191,6 +194,37 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
         param->enable_adaptive_quantization = 0;
     }
 
+    desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+    param->color_primaries          = avctx->color_primaries;
+    param->matrix_coefficients      = (desc->flags & AV_PIX_FMT_FLAG_RGB) ?
+                                      AVCOL_SPC_RGB : avctx->colorspace;
+    param->transfer_characteristics = avctx->color_trc;
+
+    if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED)
+        param->color_range = avctx->color_range == AVCOL_RANGE_JPEG;
+    else
+        param->color_range = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
+
+    if (avctx->profile != FF_PROFILE_UNKNOWN)
+        param->profile = avctx->profile;
+
+    if (avctx->level != FF_LEVEL_UNKNOWN)
+        param->level = avctx->level;
+
+    if (avctx->gop_size > 0)
+        param->intra_period_length  = avctx->gop_size - 1;
+
+    if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
+        param->frame_rate_numerator   = avctx->framerate.num;
+        param->frame_rate_denominator = avctx->framerate.den;
+    } else {
+        param->frame_rate_numerator   = avctx->time_base.den;
+        param->frame_rate_denominator = avctx->time_base.num * avctx->ticks_per_frame;
+    }
+
+    /* 2 = IDR, closed GOP, 1 = CRA, open GOP */
+    param->intra_refresh_type = avctx->flags & AV_CODEC_FLAG_CLOSED_GOP ? 2 : 1;
+
 #if SVT_AV1_CHECK_VERSION(0, 9, 1)
     while ((en = av_dict_get(svt_enc->svtav1_opts, "", en, AV_DICT_IGNORE_SUFFIX))) {
         EbErrorType ret = svt_av1_enc_parse_parameter(param, en->key, en->value);
@@ -214,7 +248,6 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
     param->source_width     = avctx->width;
     param->source_height    = avctx->height;
 
-    desc = av_pix_fmt_desc_get(avctx->pix_fmt);
     param->encoder_bit_depth = desc->comp[0].depth;
 
     if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 1)
@@ -228,22 +261,6 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
         return AVERROR(EINVAL);
     }
 
-    param->color_primaries          = avctx->color_primaries;
-    param->matrix_coefficients      = (desc->flags & AV_PIX_FMT_FLAG_RGB) ?
-                                      AVCOL_SPC_RGB : avctx->colorspace;
-    param->transfer_characteristics = avctx->color_trc;
-
-    if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED)
-        param->color_range = avctx->color_range == AVCOL_RANGE_JPEG;
-    else
-        param->color_range = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
-
-    if (avctx->profile != FF_PROFILE_UNKNOWN)
-        param->profile = avctx->profile;
-
-    if (avctx->level != FF_LEVEL_UNKNOWN)
-        param->level = avctx->level;
-
     if ((param->encoder_color_format == EB_YUV422 || param->encoder_bit_depth > 10)
          && param->profile != FF_PROFILE_AV1_PROFESSIONAL ) {
         av_log(avctx, AV_LOG_WARNING, "Forcing Professional profile\n");
@@ -253,25 +270,7 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
         param->profile = FF_PROFILE_AV1_HIGH;
     }
 
-    if (avctx->gop_size > 0)
-        param->intra_period_length  = avctx->gop_size - 1;
-
-    if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
-        param->frame_rate_numerator   = avctx->framerate.num;
-        param->frame_rate_denominator = avctx->framerate.den;
-    } else {
-        param->frame_rate_numerator   = avctx->time_base.den;
-        param->frame_rate_denominator = avctx->time_base.num * avctx->ticks_per_frame;
-    }
-
     avctx->bit_rate                 = param->target_bit_rate;
-    if (avctx->bit_rate) {
-        param->max_qp_allowed       = avctx->qmax;
-        param->min_qp_allowed       = avctx->qmin;
-    }
-
-    /* 2 = IDR, closed GOP, 1 = CRA, open GOP */
-    param->intra_refresh_type = avctx->flags & AV_CODEC_FLAG_CLOSED_GOP ? 2 : 1;
 
     return 0;
 }