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[FFmpeg-devel,03/61] avcodec/vp3: Increase some VLC tables

Message ID GV1P250MB0737D271EAEFA1E2F48C60CD8FC3A@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM
State Accepted
Commit c630d76b27922c0b26281668072a0a13f9ae1d61
Headers show
Series [FFmpeg-devel,01/61] avcodec/vlc: Add functions to init static VLCElem[] without VLC | expand

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Commit Message

Andreas Rheinhardt Sept. 26, 2023, 10:16 p.m. UTC 
These are quite small and therefore force reloads
that can be avoided by modest increases in the number of bits used.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/vp3.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
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Patch

diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 9199f53397..0463909f2f 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -164,7 +164,7 @@  static VLCElem fragment_run_length_vlc[56];   /* version <  2 */
 static VLCElem motion_vector_vlc[112];        /* version <  2 */
 
 // The VP4 tables reuse this vlc.
-static VLCElem mode_code_vlc[18 + 2084 * CONFIG_VP4_DECODER];
+static VLCElem mode_code_vlc[24 + 2108 * CONFIG_VP4_DECODER];
 
 #if CONFIG_VP4_DECODER
 static const VLCElem *vp4_mv_vlc_table[2][7]; /* version >= 2 */
@@ -681,7 +681,7 @@  static int vp4_get_mb_count(Vp3DecodeContext *s, GetBitContext *gb)
 
 static int vp4_get_block_pattern(GetBitContext *gb, int *next_block_pattern_table)
 {
-    int v = get_vlc2(gb, block_pattern_vlc[*next_block_pattern_table], 3, 2);
+    int v = get_vlc2(gb, block_pattern_vlc[*next_block_pattern_table], 5, 1);
     *next_block_pattern_table = vp4_block_pattern_table_selector[v];
     return v + 1;
 }
@@ -840,7 +840,7 @@  static int unpack_modes(Vp3DecodeContext *s, GetBitContext *gb)
                     if (scheme == 7)
                         coding_mode = get_bits(gb, 3);
                     else
-                        coding_mode = alphabet[get_vlc2(gb, mode_code_vlc, 3, 3)];
+                        coding_mode = alphabet[get_vlc2(gb, mode_code_vlc, 4, 2)];
 
                     s->macroblock_coding[current_macroblock] = coding_mode;
                     for (k = 0; k < 4; k++) {
@@ -2275,7 +2275,7 @@  static av_cold void init_tables_once(void)
                                        &motion_vector_vlc_table[0][0], 2, 1,
                                        -31, 0);
 
-    ff_vlc_init_tables_from_lengths(&state, 3, 8,
+    ff_vlc_init_tables_from_lengths(&state, 4, 8,
                                     mode_code_vlc_len, 1,
                                     NULL, 0, 0, 0, 0);
 
@@ -2292,7 +2292,7 @@  static av_cold void init_tables_once(void)
     /* version >= 2 */
     for (int i = 0; i < 2; i++) {
         block_pattern_vlc[i] =
-            ff_vlc_init_tables(&state, 3, 14,
+            ff_vlc_init_tables(&state, 5, 14,
                                &vp4_block_pattern_vlc[i][0][1], 2, 1,
                                &vp4_block_pattern_vlc[i][0][0], 2, 1, 0);
     }