avcodec/codec_desc: Mark AVRN, TGQ, PhotoCD, VBN as intra-only

Also remove the then redundant assignments of AV_FRAME_FLAG_KEY,
AV_PICTURE_TYPE_I.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/avrndec.c

@@ -67,8 +67,6 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *p,
 
     if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
         return ret;
-    p->pict_type= AV_PICTURE_TYPE_I;
-    p->flags |= AV_FRAME_FLAG_KEY;
 
     if(a->interlace) {
         buf += (true_height - avctx->height)*avctx->width;

libavcodec/codec_desc.c

@@ -905,7 +905,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .type      = AVMEDIA_TYPE_VIDEO,
         .name      = "tgq",
         .long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TGQ video"),
-        .props     = AV_CODEC_PROP_LOSSY,
+        .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
     },
     {
         .id        = AV_CODEC_ID_TQI,
@@ -1503,6 +1503,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .type      = AVMEDIA_TYPE_VIDEO,
         .name      = "avrn",
         .long_name = NULL_IF_CONFIG_SMALL("Avid AVI Codec"),
+        .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSLESS,
     },
     {
         .id        = AV_CODEC_ID_CPIA,
@@ -1820,7 +1821,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .type      = AVMEDIA_TYPE_VIDEO,
         .name      = "photocd",
         .long_name = NULL_IF_CONFIG_SMALL("Kodak Photo CD"),
-        .props     = AV_CODEC_PROP_LOSSY,
+        .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
     },
     {
         .id        = AV_CODEC_ID_IPU,
@@ -1869,7 +1870,7 @@ static const AVCodecDescriptor codec_descriptors[] = {
         .type      = AVMEDIA_TYPE_VIDEO,
         .name      = "vbn",
         .long_name = NULL_IF_CONFIG_SMALL("Vizrt Binary Image"),
-        .props     = AV_CODEC_PROP_LOSSY,
+        .props     = AV_CODEC_PROP_INTRA_ONLY | AV_CODEC_PROP_LOSSY,
     },
     {
         .id        = AV_CODEC_ID_JPEGXL,

libavcodec/eatgq.c

@@ -237,8 +237,6 @@ static int tgq_decode_frame(AVCodecContext *avctx, AVFrame *frame,
 
     if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
         return ret;
-    frame->flags |= AV_FRAME_FLAG_KEY;
-    frame->pict_type = AV_PICTURE_TYPE_I;
 
     for (y = 0; y < FFALIGN(avctx->height, 16) >> 4; y++)
         for (x = 0; x < FFALIGN(avctx->width, 16) >> 4; x++)

libavcodec/photocd.c

@@ -331,9 +331,6 @@ static int photocd_decode_frame(AVCodecContext *avctx, AVFrame *p,
     if ((ret = ff_thread_get_buffer(avctx, p, 0)) < 0)
         return ret;
 
-    p->pict_type = AV_PICTURE_TYPE_I;
-    p->flags |= AV_FRAME_FLAG_KEY;
-
     bytestream2_init(gb, avpkt->data, avpkt->size);
 
     if (s->resolution < 3) {

libavcodec/vbndec.c

@@ -151,9 +151,6 @@ static int vbn_decode_frame(AVCodecContext *avctx,
     if (ret < 0)
         goto out;
 
-    frame->pict_type = AV_PICTURE_TYPE_I;
-    frame->flags |= AV_FRAME_FLAG_KEY;
-
     if (format == VBN_FORMAT_RAW) {
         uint8_t *flipped = frame->data[0] + frame->linesize[0] * (frame->height - 1);
         av_image_copy_plane(flipped, -frame->linesize[0], image_buf ? image_buf : gb->buffer, linesize, linesize, frame->height);