ffv1: Add PIX_FMT_YUV420P9 support.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/ffv1.c

@@ -973,6 +973,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
 
     avctx->coded_frame= &s->picture;
     switch(avctx->pix_fmt){
+    case PIX_FMT_YUV420P9:
     case PIX_FMT_YUV420P10:
     case PIX_FMT_YUV422P10:
         s->packed_at_lsb = 1;
@@ -1624,6 +1625,15 @@ static int read_header(FFV1Context *f){
                 av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
                 return -1;
             }
+        }else if(f->avctx->bits_per_raw_sample==9) {
+            switch(16*f->chroma_h_shift + f->chroma_v_shift){
+            case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;
+            case 0x10: f->avctx->pix_fmt= PIX_FMT_YUV422P16; break;
+            case 0x11: f->avctx->pix_fmt= PIX_FMT_YUV420P9 ; f->packed_at_lsb=1; break;
+            default:
+                av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
+                return -1;
+            }
         }else if(f->avctx->bits_per_raw_sample==10) {
             switch(16*f->chroma_h_shift + f->chroma_v_shift){
             case 0x00: f->avctx->pix_fmt= PIX_FMT_YUV444P16; break;
@@ -1838,7 +1848,7 @@ AVCodec ff_ffv1_encoder = {
     encode_frame,
     common_end,
     .capabilities = CODEC_CAP_SLICE_THREADS,
-    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_YUV420P10, PIX_FMT_YUV422P10, PIX_FMT_NONE},
+    .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_YUV420P16, PIX_FMT_YUV422P16, PIX_FMT_YUV444P16, PIX_FMT_YUV420P9, PIX_FMT_YUV420P10, PIX_FMT_YUV422P10, PIX_FMT_NONE},
     .long_name= NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
 };
 #endif