avcodec/av1_parser: read frame properties directly from AV1RawFrameHeader

Simplifies code

Reviewed-by: Mark Thompson <sw@jkqxz.net>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/av1_parser.c

@@ -99,7 +99,6 @@ static int av1_parser_parse(AVCodecParserContext *ctx,
         CodedBitstreamUnit *unit = &td->units[i];
         AV1RawOBU *obu = unit->content;
         AV1RawFrameHeader *frame;
-        int frame_type;
 
         if (unit->type == AV1_OBU_FRAME)
             frame = &obu->obu.frame.header;
@@ -111,30 +110,15 @@ static int av1_parser_parse(AVCodecParserContext *ctx,
         if (obu->header.spatial_id > 0)
             continue;
 
-        if (frame->show_existing_frame) {
-            AV1ReferenceFrameState *ref = &av1->ref[frame->frame_to_show_map_idx];
-
-            if (!ref->valid) {
-                av_log(avctx, AV_LOG_ERROR, "Invalid reference frame\n");
-                goto end;
-            }
-
-            ctx->width  = ref->frame_width;
-            ctx->height = ref->frame_height;
-            frame_type  = ref->frame_type;
-
-            ctx->key_frame = 0;
-        } else if (!frame->show_frame) {
+        if (!frame->show_frame)
             continue;
-        } else {
-            ctx->width  = av1->frame_width;
-            ctx->height = av1->frame_height;
-            frame_type  = frame->frame_type;
 
-            ctx->key_frame = frame_type == AV1_FRAME_KEY;
-        }
+        ctx->width  = frame->frame_width_minus_1 + 1;
+        ctx->height = frame->frame_height_minus_1 + 1;
+
+        ctx->key_frame = frame->frame_type == AV1_FRAME_KEY && !frame->show_existing_frame;
 
-        switch (frame_type) {
+        switch (frame->frame_type) {
         case AV1_FRAME_KEY:
         case AV1_FRAME_INTRA_ONLY:
             ctx->pict_type = AV_PICTURE_TYPE_I;