lavc/dxv: move tag definitions to common header

Signed-off-by: Connor Worley <connorbworley@gmail.com>

libavcodec/dxv.c

@@ -28,6 +28,7 @@
 #include "avcodec.h"
 #include "bytestream.h"
 #include "codec_internal.h"
+#include "dxv.h"
 #include "lzf.h"
 #include "texturedsp.h"
 #include "thread.h"
@@ -1064,7 +1065,7 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,
 
     tag = bytestream2_get_le32(gbc);
     switch (tag) {
-    case MKBETAG('D', 'X', 'T', '1'):
+    case DXV_FMT_DXT1:
         decompress_tex = dxv_decompress_dxt1;
         ctx->tex_funct = ctx->texdsp.dxt1_block;
         ctx->tex_rat   = 8;
@@ -1072,7 +1073,7 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,
         msgcomp = "DXTR1";
         msgtext = "DXT1";
         break;
-    case MKBETAG('D', 'X', 'T', '5'):
+    case DXV_FMT_DXT5:
         decompress_tex = dxv_decompress_dxt5;
         /* DXV misnomers DXT5, alpha is premultiplied so use DXT4 instead */
         ctx->tex_funct = ctx->texdsp.dxt4_block;
@@ -1081,7 +1082,7 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,
         msgcomp = "DXTR5";
         msgtext = "DXT5";
         break;
-    case MKBETAG('Y', 'C', 'G', '6'):
+    case DXV_FMT_YCG6:
         decompress_tex = dxv_decompress_ycg6;
         ctx->tex_funct_planar[0] = yo_block;
         ctx->tex_funct_planar[1] = cocg_block;
@@ -1098,7 +1099,7 @@ static int dxv_decode(AVCodecContext *avctx, AVFrame *frame,
         avctx->pix_fmt = AV_PIX_FMT_YUV420P;
         avctx->colorspace = AVCOL_SPC_YCOCG;
         break;
-    case MKBETAG('Y', 'G', '1', '0'):
+    case DXV_FMT_YG10:
         decompress_tex = dxv_decompress_yg10;
         ctx->tex_funct_planar[0] = yao_block;
         ctx->tex_funct_planar[1] = cocg_block;

libavcodec/dxv.h

@@ -0,0 +1,34 @@
+/*
+ * Resolume DXV common
+ * Copyright (C) 2024 Connor Worley <connorbworley@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_DXV_H
+#define AVCODEC_DXV_H
+
+#include "libavutil/macros.h"
+
+typedef enum DXVTextureFormat {
+    DXV_FMT_DXT1 = MKBETAG('D', 'X', 'T', '1'),
+    DXV_FMT_DXT5 = MKBETAG('D', 'X', 'T', '5'),
+    DXV_FMT_YCG6 = MKBETAG('Y', 'C', 'G', '6'),
+    DXV_FMT_YG10 = MKBETAG('Y', 'G', '1', '0'),
+} DXVTextureFormat;
+
+#endif /* AVCODEC_DXV_H */

libavcodec/dxvenc.c

@@ -27,6 +27,7 @@
 
 #include "bytestream.h"
 #include "codec_internal.h"
+#include "dxv.h"
 #include "encode.h"
 #include "texturedsp.h"
 
@@ -40,10 +41,6 @@
 #define LOOKBACK_HT_ELEMS 0x40000
 #define LOOKBACK_WORDS    0x20202
 
-enum DXVTextureFormat {
-    DXV_FMT_DXT1 = MKBETAG('D', 'X', 'T', '1'),
-};
-
 typedef struct HTEntry {
     uint32_t key;
     uint32_t pos;
@@ -120,7 +117,7 @@ typedef struct DXVEncContext {
 
     TextureDSPThreadContext enc;
 
-    enum DXVTextureFormat tex_fmt;
+    DXVTextureFormat tex_fmt;
     int (*compress_tex)(AVCodecContext *avctx);
 
     const AVCRC *crc_ctx;