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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 06/17] avcodec/speedhqenc: Avoid unnecessary indirection
Date: Sun, 23 Oct 2022 21:35:59 +0200
Message-ID: <AS8P250MB0744880A67D4A24B7075316A8F2F9@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <AS8P250MB07449FCA4121B15E497ED55D8F2F9@AS8P250MB0744.EURP250.PROD.OUTLOOK.COM>

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/speedhq.c    | 4 ++--
 libavcodec/speedhq.h    | 7 +++++++
 libavcodec/speedhqenc.c | 8 ++++----
 3 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/libavcodec/speedhq.c b/libavcodec/speedhq.c
index ee37573789..2d6e8ca949 100644
--- a/libavcodec/speedhq.c
+++ b/libavcodec/speedhq.c
@@ -24,7 +24,7 @@
 #include "speedhq.h"
 
 /* AC codes: Very similar but not identical to MPEG-2. */
-static const uint16_t speedhq_vlc[123][2] = {
+const uint16_t ff_speedhq_vlc_table[SPEEDHQ_RL_NB_ELEMS + 2][2] = {
     {0x0001,  2}, {0x0003,  3}, {0x000E,  4}, {0x0007,  5},
     {0x0017,  5}, {0x0028,  6}, {0x0008,  6}, {0x006F,  7},
     {0x001F,  7}, {0x00C4,  8}, {0x0044,  8}, {0x005F,  8},
@@ -101,7 +101,7 @@ static const uint8_t speedhq_run[121] = {
 RLTable ff_rl_speedhq = {
     121,
     121,
-    speedhq_vlc,
+    ff_speedhq_vlc_table,
     speedhq_run,
     speedhq_level,
 };
diff --git a/libavcodec/speedhq.h b/libavcodec/speedhq.h
index 94879eda65..78f11ac6ab 100644
--- a/libavcodec/speedhq.h
+++ b/libavcodec/speedhq.h
@@ -21,9 +21,16 @@
 #ifndef AVCODEC_SPEEDHQ_H
 #define AVCODEC_SPEEDHQ_H
 
+#include <stdint.h>
 #include "rl.h"
 #include "libavutil/attributes_internal.h"
 
+#define SPEEDHQ_RL_NB_ELEMS 121
+
+FF_VISIBILITY_PUSH_HIDDEN
+extern const uint16_t ff_speedhq_vlc_table[SPEEDHQ_RL_NB_ELEMS + 2][2];
+
 extern RLTable attribute_visibility_hidden ff_rl_speedhq;
+FF_VISIBILITY_POP_HIDDEN
 
 #endif /* AVCODEC_SPEEDHQ_H */
diff --git a/libavcodec/speedhqenc.c b/libavcodec/speedhqenc.c
index 6cf40aac2d..58b5e858a8 100644
--- a/libavcodec/speedhqenc.c
+++ b/libavcodec/speedhqenc.c
@@ -222,11 +222,11 @@ static void encode_block(MpegEncContext *s, int16_t *block, int n)
             if (alevel <= ff_rl_speedhq.max_level[0][run]) {
                 code = ff_rl_speedhq.index_run[0][run] + alevel - 1;
                 /* store the VLC & sign at once */
-                put_bits_le(&s->pb, ff_rl_speedhq.table_vlc[code][1] + 1,
-                            ff_rl_speedhq.table_vlc[code][0] + (sign << ff_rl_speedhq.table_vlc[code][1]));
+                put_bits_le(&s->pb, ff_speedhq_vlc_table[code][1] + 1,
+                            ff_speedhq_vlc_table[code][0] | (sign << ff_speedhq_vlc_table[code][1]));
             } else {
                 /* escape seems to be pretty rare <5% so I do not optimize it;
-                 * the values correspond to ff_rl_speedhq.table_vlc[121] */
+                 * the values correspond to ff_speedhq_vlc_table[121] */
                 put_bits_le(&s->pb, 6, 32);
                 /* escape: only clip in this case */
                 put_bits_le(&s->pb, 6, run);
@@ -235,7 +235,7 @@ static void encode_block(MpegEncContext *s, int16_t *block, int n)
             last_non_zero = i;
         }
     }
-    /* end of block; the values correspond to ff_rl_speedhq.table_vlc[122] */
+    /* end of block; the values correspond to ff_speedhq_vlc_table[122] */
     put_bits_le(&s->pb, 4, 6);
 }
 
-- 
2.34.1

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  parent reply	other threads:[~2022-10-23 19:36 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-23 19:34 [FFmpeg-devel] [PATCH 01/17] avcodec/mpeg12dec: Remove redundant function call Andreas Rheinhardt
2022-10-23 19:35 ` [FFmpeg-devel] [PATCH 02/17] avformat/mux: Don't call ff_toupper4() unnecessarily Andreas Rheinhardt
2022-10-23 19:35 ` [FFmpeg-devel] [PATCH 03/17] avformat/mux: Constify validate_codec_tag() Andreas Rheinhardt
2022-10-23 19:35 ` [FFmpeg-devel] [PATCH 04/17] avcodec/mpeg12: Avoid indirection when accessing rl_vlc tables Andreas Rheinhardt
2022-10-23 19:35 ` [FFmpeg-devel] [PATCH 05/17] avcodec/mpeg12enc: Avoid unnecessary indirection Andreas Rheinhardt
2022-10-23 19:35 ` Andreas Rheinhardt [this message]
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 07/17] avcodec/mpeg12enc: Pass tables explicitly in ff_mpeg1_init_uni_ac_vlc Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 08/17] avcodec/mpeg12enc: Don't initialize ff_rl_mpeg2 unnecessarily Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 09/17] avcodec/mpeg12: Pass parameters explicitly in ff_init_2d_vlc_rl() Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 10/17] avcodec/mpeg12data: Remove unused ff_rl_mpeg2 Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 11/17] avcodec/mpeg12: Use ff_rl_mpeg1.table_(run|level) directly Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 12/17] avcodec/speedhqdec: Use ff_rl_speedhq.table_(run|level) directly Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 13/17] avcodec/rl: Add analogue for ff_rl_init() without RLTable Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 14/17] avcodec/mpeg12enc: Don't initialize unused parts of RLTable Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 15/17] avcodec/mpeg12data: Remove ff_rl_mpeg1 Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 16/17] avcodec/speedhqenc: Don't initialize unused parts of RLTable Andreas Rheinhardt
2022-10-23 19:36 ` [FFmpeg-devel] [PATCH 17/17] avcodec/speedhq: Remove unused ff_rl_speedhq Andreas Rheinhardt
2022-10-25 21:39 ` [FFmpeg-devel] [PATCH 01/17] avcodec/mpeg12dec: Remove redundant function call Andreas Rheinhardt

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