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From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To: ffmpeg-devel@ffmpeg.org
Cc: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Subject: [FFmpeg-devel] [PATCH 32/61] avcodec/lagarith: Avoid unnecessary VLC structure
Date: Wed, 27 Sep 2023 00:17:03 +0200
Message-ID: <GV1P250MB0737A0D7CDAD0F867CB62A288FC3A@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <GV1P250MB073754E215A199E7219CC13A8FC3A@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM>

Everything besides VLC.table is basically write-only
and even VLC.table can be removed by accessing the
underlying table directly.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/lagarith.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c
index 3288c0517c..3c6635f763 100644
--- a/libavcodec/lagarith.c
+++ b/libavcodec/lagarith.c
@@ -60,7 +60,7 @@ typedef struct LagarithContext {
     int zeros_rem;              /**< number of zero bytes remaining to output */
 } LagarithContext;
 
-static VLC lag_tab;
+static VLCElem lag_tab[1 << VLC_BITS];
 
 static const uint8_t lag_bits[] = {
     7, 7, 2, 7, 3, 4, 5, 6, 7, 7, 7, 7, 7, 6, 7, 4, 5, 7, 7, 7, 7,
@@ -85,8 +85,8 @@ static const uint8_t lag_symbols[] = {
 
 static av_cold void lag_init_static_data(void)
 {
-    VLC_INIT_SPARSE_STATIC(&lag_tab, VLC_BITS, FF_ARRAY_ELEMS(lag_bits),
-                           lag_bits, 1, 1, lag_codes, 1, 1, lag_symbols, 1, 1, 128);
+    VLC_INIT_STATIC_SPARSE_TABLE(lag_tab, VLC_BITS, FF_ARRAY_ELEMS(lag_bits),
+                                 lag_bits, 1, 1, lag_codes, 1, 1, lag_symbols, 1, 1, 0);
 }
 
 /**
@@ -136,7 +136,7 @@ static int lag_decode_prob(GetBitContext *gb, uint32_t *value)
 {
     unsigned val, bits;
 
-    bits = get_vlc2(gb, lag_tab.table, VLC_BITS, 1);
+    bits = get_vlc2(gb, lag_tab, VLC_BITS, 1);
     if (bits > 31) {
         *value = 0;
         return AVERROR_INVALIDDATA;
-- 
2.34.1

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  parent reply	other threads:[~2023-09-26 22:21 UTC|newest]

Thread overview: 64+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26 22:12 [FFmpeg-devel] [PATCH 01/61] avcodec/vlc: Add functions to init static VLCElem[] without VLC Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 02/61] avcodec/vp3: Make VLC tables static where possible Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 03/61] avcodec/vp3: Increase some VLC tables Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 04/61] avcodec/h264_cavlc: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 05/61] avcodec/h264_cavlc: Avoid indirection for coefficient table VLCs Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 06/61] avcodec/h264_cavlc: Remove code duplication Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 07/61] avcodec/asvdec: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 08/61] avcodec/faxcompr: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 09/61] avcodec/h261dec: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 10/61] avcodec/ituh263dec: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 11/61] avcodec/msmpeg4_vc1_data: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 12/61] avcodec/svq1dec: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 13/61] avcodec/svq1dec: Increase size of VLC Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 14/61] avcodec/rv40: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 15/61] avcodec/mpc7: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 16/61] avcodec/intrax8: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 17/61] avcodec/clearvideo: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 18/61] avcodec/atrac9dec: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 19/61] avcodec/imc: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 20/61] avcodec/refstruct: Add simple API for refcounted objects Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 21/61] avcodec/vp3: Share coefficient VLCs between threads Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 22/61] avcodec/vp3: Avoid complete VLC struct, only use VLCElem* Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 23/61] avcodec/vp3: Reindent after the previous commits Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 24/61] avcodec/rv34: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 25/61] avcodec/rv34: Constify pointer to static object Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 26/61] avcodec/wnv1: Avoid unnecessary VLC structure Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 27/61] avcodec/mv30: " Andreas Rheinhardt
2023-09-26 22:16 ` [FFmpeg-devel] [PATCH 28/61] avcodec/vqcdec: " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 29/61] avcodec/mobiclip: " Andreas Rheinhardt
2023-09-27 23:20   ` Michael Niedermayer
2023-09-27 23:44     ` Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 30/61] avcodec/mimic: " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 31/61] avcodec/imm4: " Andreas Rheinhardt
2023-09-26 22:17 ` Andreas Rheinhardt [this message]
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 33/61] avcodec/speedhqdec: " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 34/61] avcodec/vc1: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 35/61] avcodec/4xm: Avoid unnecessary " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 36/61] avcodec/indeo2: Avoid unnecessary VLC structure Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 37/61] avcodec/mss4: Partially inline max_depth and nb_bits of VLC Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 38/61] avcodec/mpeg4videodec: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 39/61] avcodec/msmpeg4dec: " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 40/61] avcodec/aacps: Remove unused AVCodecContext* parameter from ff_ps_apply Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 41/61] avcodec/aacps: Pass logctx as void* instead of AVCodecContext* Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 42/61] avcodec/aacdectab: Deduplicate common decoder tables Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 43/61] avcodec/aacdec_template: Deduplicate VLCs Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 44/61] avcodec/aacdec_template: Don't init unused table for fixed-point decoder Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 45/61] avcodec/aactab: Improve included headers Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 46/61] avcodec/aacdec_common: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 47/61] avcodec/aacsbr_template: Deduplicate VLCs Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 48/61] avcodec/aacdec_common: Avoid superfluous VLC structures for SBR VLCs Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 49/61] avcodec/aacdec_common: Switch to ff_vlc_init_tables_from_lengths() Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 50/61] avcodec/aacdec_common: Combine huffman tabs Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 51/61] avcodec/aacdec_common: Apply offset for SBR VLCs during init Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 52/61] avcodec/aacps: Move initializing common stuff to aacdec_common.c Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 53/61] avcodec/aacps_common: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 54/61] avcodec/aacps_common: Switch to ff_vlc_init_tables_from_lengths() Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 55/61] avcodec/aacps_common: Combine huffman tabels Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 56/61] avcodec/aacps_common: Apply offset for VLCs during init Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 57/61] avcodec/mpegaudiodec_common: Avoid superfluous VLC structures Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 58/61] avcodec/mpeg12: Avoid unnecessary " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 59/61] avcodec/wmaprodec: Avoid superfluous " Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 60/61] avcodec/wmavoice: Avoid unnecessary VLC structure Andreas Rheinhardt
2023-09-26 22:17 ` [FFmpeg-devel] [PATCH 61/61] avcodec/vlc: Remove unused macros Andreas Rheinhardt
2023-10-30 23:08 ` [FFmpeg-devel] [PATCH 01/61] avcodec/vlc: Add functions to init static VLCElem[] without VLC Andreas Rheinhardt

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