[FFmpeg-devel] [PATCH 14/57] avcodec/mpeg4videodec: Use VLC symbol table
Andreas Rheinhardt
andreas.rheinhardt at outlook.com
Wed Jun 12 16:48:10 EEST 2024
Possible now that MB_TYPE_L1 (which does not fit into
an int16_t) is no longer used).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
---
libavcodec/mpeg4videodec.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index ebbd845129..116dc1507e 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -67,7 +67,7 @@ static VLCElem studio_chroma_dc[528];
static const uint8_t mpeg4_block_count[4] = { 0, 6, 8, 12 };
-static const int mb_type_b_map[4] = {
+static const int16_t mb_type_b_map[4] = {
MB_TYPE_DIRECT2 | MB_TYPE_BIDIR_MV,
MB_TYPE_BIDIR_MV | MB_TYPE_16x16,
MB_TYPE_BACKWARD_MV | MB_TYPE_16x16,
@@ -1845,7 +1845,6 @@ static int mpeg4_decode_mb(MpegEncContext *s, int16_t block[6][64])
av_log(s->avctx, AV_LOG_ERROR, "illegal MB_type\n");
return AVERROR_INVALIDDATA;
}
- mb_type = mb_type_b_map[mb_type];
if (modb2) {
cbp = 0;
} else {
@@ -3794,9 +3793,10 @@ static av_cold void mpeg4_init_static(void)
VLC_INIT_STATIC_TABLE_FROM_LENGTHS(sprite_trajectory, SPRITE_TRAJ_VLC_BITS, 15,
ff_sprite_trajectory_lens, 1,
NULL, 0, 0, 0, 0);
- VLC_INIT_STATIC_TABLE(mb_type_b_vlc, MB_TYPE_B_VLC_BITS, 4,
- &ff_mb_type_b_tab[0][1], 2, 1,
- &ff_mb_type_b_tab[0][0], 2, 1, 0);
+ VLC_INIT_STATIC_SPARSE_TABLE(mb_type_b_vlc, MB_TYPE_B_VLC_BITS, 4,
+ &ff_mb_type_b_tab[0][1], 2, 1,
+ &ff_mb_type_b_tab[0][0], 2, 1,
+ mb_type_b_map, 2, 2, 0);
}
static av_cold int decode_init(AVCodecContext *avctx)
--
2.40.1
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