x264: Factor out the reconfiguration code

libavcodec/libx264.c

@@ -128,33 +128,12 @@ static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
     return 1;
 }
 
-static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
+static void reconfig_encoder(AVCodecContext *ctx, const AVFrame *frame)
-                      int *got_packet)
 {
     X264Context *x4 = ctx->priv_data;
-    x264_nal_t *nal;
-    int nnal, i, ret;
-    x264_picture_t pic_out;
     AVFrameSideData *side_data;
 
-    x264_picture_init( &x4->pic );
-    x4->pic.img.i_csp   = x4->params.i_csp;
-    if (x264_bit_depth > 8)
-        x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
-    x4->pic.img.i_plane = 3;
 
-    if (frame) {
-        for (i = 0; i < 3; i++) {
-            x4->pic.img.plane[i]    = frame->data[i];
-            x4->pic.img.i_stride[i] = frame->linesize[i];
-        }
-
-        x4->pic.i_pts  = frame->pts;
-        x4->pic.i_type =
-            frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
-            frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
-            frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
-                                            X264_TYPE_AUTO;
     if (x4->params.b_tff != frame->top_field_first) {
         x4->params.b_tff = frame->top_field_first;
         x264_encoder_reconfig(x4->enc, &x4->params);
@@ -232,6 +211,35 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
             x264_encoder_reconfig(x4->enc, &x4->params);
         }
     }
+}
+
+static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
+                      int *got_packet)
+{
+    X264Context *x4 = ctx->priv_data;
+    x264_nal_t *nal;
+    int nnal, i, ret;
+    x264_picture_t pic_out;
+
+    x264_picture_init( &x4->pic );
+    x4->pic.img.i_csp   = x4->params.i_csp;
+    if (x264_bit_depth > 8)
+        x4->pic.img.i_csp |= X264_CSP_HIGH_DEPTH;
+    x4->pic.img.i_plane = 3;
+
+    if (frame) {
+        for (i = 0; i < 3; i++) {
+            x4->pic.img.plane[i]    = frame->data[i];
+            x4->pic.img.i_stride[i] = frame->linesize[i];
+        }
+
+        x4->pic.i_pts  = frame->pts;
+        x4->pic.i_type =
+            frame->pict_type == AV_PICTURE_TYPE_I ? X264_TYPE_KEYFRAME :
+            frame->pict_type == AV_PICTURE_TYPE_P ? X264_TYPE_P :
+            frame->pict_type == AV_PICTURE_TYPE_B ? X264_TYPE_B :
+                                            X264_TYPE_AUTO;
+        reconfig_encoder(ctx, frame);
     }
     do {
         if (x264_encoder_encode(x4->enc, &nal, &nnal, frame? &x4->pic: NULL, &pic_out) < 0)