lavc/dv.h: move encoder/decoder-specific code to a new header

dv.h is also used by libavformat, so avoid exposing encoder/decoder code
to it.

libavcodec/dv.c

@@ -38,8 +38,12 @@
  * DV codec.
  */
 
-#include "avcodec.h"
+#include <stdint.h>
-#include "dv.h"
+
+#include "libavutil/pixfmt.h"
+
+#include "dv_internal.h"
+#include "dv_profile.h"
 
 static inline void dv_calc_mb_coordinates(const AVDVProfile *d, int chan,
                                           int seq, int slot, uint16_t *tbl)

libavcodec/dv.h

@@ -27,13 +27,6 @@
 #ifndef AVCODEC_DV_H
 #define AVCODEC_DV_H
 
-#include "dv_profile.h"
-
-typedef struct DVwork_chunk {
-    uint16_t buf_offset;
-    uint16_t mb_coordinates[5];
-} DVwork_chunk;
-
 enum dv_section_type {
     dv_sect_header  = 0x1f,
     dv_sect_subcode = 0x3f,
@@ -72,31 +65,4 @@ enum dv_pack_type {
  */
 #define DV_MAX_BPM 8
 
-int ff_dv_init_dynamic_tables(DVwork_chunk *work_chunks, const AVDVProfile *d);
-
-static inline int dv_work_pool_size(const AVDVProfile *d)
-{
-    int size = d->n_difchan * d->difseg_size * 27;
-    if (DV_PROFILE_IS_1080i50(d))
-        size -= 3 * 27;
-    if (DV_PROFILE_IS_720p50(d))
-        size -= 4 * 27;
-    return size;
-}
-
-static inline void dv_calculate_mb_xy(const AVDVProfile *sys,
-                                      const uint8_t *buf,
-                                      const DVwork_chunk *work_chunk,
-                                      int m, int *mb_x, int *mb_y)
-{
-    *mb_x = work_chunk->mb_coordinates[m] & 0xff;
-    *mb_y = work_chunk->mb_coordinates[m] >> 8;
-
-    /* We work with 720p frames split in half.
-     * The odd half-frame (chan == 2,3) is displaced :-( */
-    if (sys->height == 720 && !(buf[1] & 0x0C))
-        /* shifting the Y coordinate down by 72/2 macro blocks */
-        *mb_y -= (*mb_y > 17) ? 18 : -72;
-}
-
 #endif /* AVCODEC_DV_H */

libavcodec/dv_internal.h

@@ -0,0 +1,62 @@
+/*
+ * DV encoder/decoder shared code
+ * Copyright (c) 2002 Fabrice Bellard
+ *
+ * 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_DV_INTERNAL_H
+#define AVCODEC_DV_INTERNAL_H
+
+#include <stdint.h>
+
+#include "dv.h"
+#include "dv_profile.h"
+
+typedef struct DVwork_chunk {
+    uint16_t buf_offset;
+    uint16_t mb_coordinates[5];
+} DVwork_chunk;
+
+int ff_dv_init_dynamic_tables(DVwork_chunk *work_chunks, const AVDVProfile *d);
+
+static inline int dv_work_pool_size(const AVDVProfile *d)
+{
+    int size = d->n_difchan * d->difseg_size * 27;
+    if (DV_PROFILE_IS_1080i50(d))
+        size -= 3 * 27;
+    if (DV_PROFILE_IS_720p50(d))
+        size -= 4 * 27;
+    return size;
+}
+
+static inline void dv_calculate_mb_xy(const AVDVProfile *sys,
+                                      const uint8_t *buf,
+                                      const DVwork_chunk *work_chunk,
+                                      int m, int *mb_x, int *mb_y)
+{
+    *mb_x = work_chunk->mb_coordinates[m] & 0xff;
+    *mb_y = work_chunk->mb_coordinates[m] >> 8;
+
+    /* We work with 720p frames split in half.
+     * The odd half-frame (chan == 2,3) is displaced :-( */
+    if (sys->height == 720 && !(buf[1] & 0x0C))
+        /* shifting the Y coordinate down by 72/2 macro blocks */
+        *mb_y -= (*mb_y > 17) ? 18 : -72;
+}
+
+#endif // AVCODEC_DV_INTERNAL_H

libavcodec/dvdec.c

@@ -44,6 +44,7 @@
 #include "codec_internal.h"
 #include "decode.h"
 #include "dv.h"
+#include "dv_internal.h"
 #include "dv_profile_internal.h"
 #include "dvdata.h"
 #include "get_bits.h"

libavcodec/dvenc.c

@@ -38,6 +38,7 @@
 #include "avcodec.h"
 #include "codec_internal.h"
 #include "dv.h"
+#include "dv_internal.h"
 #include "dv_profile_internal.h"
 #include "dv_tablegen.h"
 #include "encode.h"