avcodec/vorbis_data: Move encoder-related table to its only user

Said table was unused in case libvorbis was disabled.

Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavcodec/libvorbisenc.c

@@ -70,6 +70,17 @@ static const AVClass vorbis_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
+static const uint8_t vorbis_encoding_channel_layout_offsets[8][8] = {
+    { 0 },
+    { 0, 1 },
+    { 0, 2, 1 },
+    { 0, 1, 2, 3 },
+    { 0, 2, 1, 3, 4 },
+    { 0, 2, 1, 4, 5, 3 },
+    { 0, 2, 1, 5, 6, 4, 3 },
+    { 0, 2, 1, 6, 7, 4, 5, 3 },
+};
+
 static int vorbis_error_to_averror(int ov_err)
 {
     switch (ov_err) {
@@ -287,7 +298,7 @@ static int libvorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
         buffer = vorbis_analysis_buffer(&s->vd, samples);
         for (c = 0; c < channels; c++) {
             int co = (channels > 8) ? c :
-                     ff_vorbis_encoding_channel_layout_offsets[channels - 1][c];
+                     vorbis_encoding_channel_layout_offsets[channels - 1][c];
             memcpy(buffer[c], frame->extended_data[co],
                    samples * sizeof(*buffer[c]));
         }

libavcodec/vorbis.h

@@ -26,7 +26,6 @@
 extern const float ff_vorbis_floor1_inverse_db_table[256];
 extern const float * const ff_vorbis_vwin[8];
 extern const uint8_t ff_vorbis_channel_layout_offsets[8][8];
-extern const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8];
 extern const uint64_t ff_vorbis_channel_layouts[9];
 
 typedef struct vorbis_floor1_entry {

libavcodec/vorbis_data.c

@@ -34,17 +34,6 @@ const uint8_t ff_vorbis_channel_layout_offsets[8][8] = {
     { 0, 2, 1, 7, 5, 6, 3, 4 },
 };
 
-const uint8_t ff_vorbis_encoding_channel_layout_offsets[8][8] = {
-    { 0 },
-    { 0, 1 },
-    { 0, 2, 1 },
-    { 0, 1, 2, 3 },
-    { 0, 2, 1, 3, 4 },
-    { 0, 2, 1, 4, 5, 3 },
-    { 0, 2, 1, 5, 6, 4, 3 },
-    { 0, 2, 1, 6, 7, 4, 5, 3 },
-};
-
 const uint64_t ff_vorbis_channel_layouts[9] = {
     AV_CH_LAYOUT_MONO,
     AV_CH_LAYOUT_STEREO,