avcodec/opus_parser: Handle complete frames flag.

Signed-off-by: Jacob Trimble <modmaker@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/opus_parser.c

@@ -170,6 +170,10 @@ static int opus_parse(AVCodecParserContext *ctx, AVCodecContext *avctx,
     ParseContext *pc    = &s->pc;
     int next, header_len;
 
+    if (ctx->flags & PARSER_FLAG_COMPLETE_FRAMES) {
+        next = buf_size;
+        header_len = 0;
+    } else {
         next = opus_find_frame_end(ctx, avctx, buf, buf_size, &header_len);
 
         if (s->ts_framing && next != AVERROR_INVALIDDATA &&
@@ -184,6 +188,7 @@ static int opus_parse(AVCodecParserContext *ctx, AVCodecContext *avctx,
             *poutbuf_size = 0;
             return buf_size;
         }
+    }
 
     *poutbuf      = buf + header_len;
     *poutbuf_size = buf_size - header_len;