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| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-10-30 13:24:10 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-11-06 17:41:26 +0100 |
| commit | 83dfc21a212cc0b03d1db17df072bfe7c4a3333a (patch) | |
| tree | bf4c612518664c32a9e2749446128949d2e15b35 /libavcodec/msmpeg4data.c | |
| parent | 8f7bf45895ced0b19295ba3d93470afa7d810f28 (diff) | |
| download | ffmpeg-83dfc21a212cc0b03d1db17df072bfe7c4a3333a.tar.gz | |
avcodec/msmpeg4dec: Factor initializing VLCs shared with VC-1 out
It will be useful in the following commits.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavcodec/msmpeg4data.c')
| -rw-r--r-- | libavcodec/msmpeg4data.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libavcodec/msmpeg4data.c b/libavcodec/msmpeg4data.c index 63f30ac544..7b54eea221 100644 --- a/libavcodec/msmpeg4data.c +++ b/libavcodec/msmpeg4data.c @@ -30,6 +30,10 @@ #include "h263data.h" #include "mpeg4videodata.h" #include "msmpeg4data.h" +#include "rl.h" +#include "vlc.h" +#include "libavutil/attributes.h" +#include "libavutil/thread.h" uint32_t ff_v2_dc_lum_table[512][2]; uint32_t ff_v2_dc_chroma_table[512][2]; @@ -38,6 +42,32 @@ VLC ff_msmp4_mb_i_vlc; VLC ff_msmp4_dc_luma_vlc[2]; VLC ff_msmp4_dc_chroma_vlc[2]; +static av_cold void msmp4_vc1_vlcs_init(void) +{ + INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[0], MSMP4_DC_VLC_BITS, 120, + &ff_table0_dc_lum[0][1], 8, 4, + &ff_table0_dc_lum[0][0], 8, 4, 1158); + INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[0], MSMP4_DC_VLC_BITS, 120, + &ff_table0_dc_chroma[0][1], 8, 4, + &ff_table0_dc_chroma[0][0], 8, 4, 1118); + INIT_VLC_STATIC(&ff_msmp4_dc_luma_vlc[1], MSMP4_DC_VLC_BITS, 120, + &ff_table1_dc_lum[0][1], 8, 4, + &ff_table1_dc_lum[0][0], 8, 4, 1476); + INIT_VLC_STATIC(&ff_msmp4_dc_chroma_vlc[1], MSMP4_DC_VLC_BITS, 120, + &ff_table1_dc_chroma[0][1], 8, 4, + &ff_table1_dc_chroma[0][0], 8, 4, 1216); + + INIT_VLC_STATIC(&ff_msmp4_mb_i_vlc, MSMP4_MB_INTRA_VLC_BITS, 64, + &ff_msmp4_mb_i_table[0][1], 4, 2, + &ff_msmp4_mb_i_table[0][0], 4, 2, 536); +} + +av_cold void ff_msmp4_vc1_vlcs_init_once(void) +{ + static AVOnce init_static_once = AV_ONCE_INIT; + ff_thread_once(&init_static_once, msmp4_vc1_vlcs_init); +} + /* intra picture macroblock coded block pattern */ const uint16_t ff_msmp4_mb_i_table[64][2] = { { 0x1, 1 }, { 0x17, 6 }, { 0x9, 5 }, { 0x5, 5 }, |