diff mbox series

[FFmpeg-devel,166/191] avcodec/aacdec, sinewin: Move 120 and 960 point sine tables to aacdec

Message ID 20201123193739.1249300-4-andreas.rheinhardt@gmail.com
State Accepted
Commit cdea393093ebe10ac2222739d480aeb2f6a0bcc8
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Series VLC, esp. init_vlc patches
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Commit Message

Andreas Rheinhardt Nov. 23, 2020, 7:37 p.m. UTC
The floating point AAC decoder is the only user of these tables, so it
makes sense to move them there. Furthermore, initializing the ordinary
power-of-two sinetables is currently not thread-safe and if the 120- and
960-point sinetables were not moved, one would have to choose whether
to guard initializing these two tables with their own AVOnces or not.
Doing so would add unnecessary AVOnces as the AAC decoder already guards
initializing its static data by an AVOnce; not doing so would be fragile
if a second user of these tables were to be added.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
---
 libavcodec/aacdec.c                    |  3 +++
 libavcodec/aacdec_template.c           | 10 +++++-----
 libavcodec/sinewin.h                   |  5 -----
 libavcodec/sinewin_tablegen.h          |  4 ----
 libavcodec/sinewin_tablegen_template.c |  2 --
 5 files changed, 8 insertions(+), 16 deletions(-)
diff mbox series

Patch

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index d17852d8ba..fd4805f6eb 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -69,6 +69,9 @@ 
 #   include "mips/aacdec_mips.h"
 #endif
 
+DECLARE_ALIGNED(32, static INTFLOAT, AAC_RENAME(sine_120))[120];
+DECLARE_ALIGNED(32, static INTFLOAT, AAC_RENAME(sine_960))[960];
+
 static av_always_inline void reset_predict_state(PredictorState *ps)
 {
     ps->r0   = 0.0f;
diff --git a/libavcodec/aacdec_template.c b/libavcodec/aacdec_template.c
index 186175e6e6..e6fe913a27 100644
--- a/libavcodec/aacdec_template.c
+++ b/libavcodec/aacdec_template.c
@@ -1235,8 +1235,8 @@  static av_cold void aac_static_table_init(void)
 #if !USE_FIXED
     AAC_RENAME(ff_kbd_window_init)(AAC_RENAME(ff_aac_kbd_long_960), 4.0, 960);
     AAC_RENAME(ff_kbd_window_init)(AAC_RENAME(ff_aac_kbd_short_120), 6.0, 120);
-    AAC_RENAME(ff_sine_window_init)(AAC_RENAME(ff_sine_960), 960);
-    AAC_RENAME(ff_sine_window_init)(AAC_RENAME(ff_sine_120), 120);
+    AAC_RENAME(ff_sine_window_init)(AAC_RENAME(sine_960), 960);
+    AAC_RENAME(ff_sine_window_init)(AAC_RENAME(sine_120), 120);
 #endif
     AAC_RENAME(ff_init_ff_sine_windows)(10);
     AAC_RENAME(ff_init_ff_sine_windows)( 9);
@@ -2810,9 +2810,9 @@  static void imdct_and_windowing_960(AACContext *ac, SingleChannelElement *sce)
     INTFLOAT *in    = sce->coeffs;
     INTFLOAT *out   = sce->ret;
     INTFLOAT *saved = sce->saved;
-    const INTFLOAT *swindow      = ics->use_kb_window[0] ? AAC_RENAME(ff_aac_kbd_short_120) : AAC_RENAME(ff_sine_120);
-    const INTFLOAT *lwindow_prev = ics->use_kb_window[1] ? AAC_RENAME(ff_aac_kbd_long_960) : AAC_RENAME(ff_sine_960);
-    const INTFLOAT *swindow_prev = ics->use_kb_window[1] ? AAC_RENAME(ff_aac_kbd_short_120) : AAC_RENAME(ff_sine_120);
+    const INTFLOAT *swindow      = ics->use_kb_window[0] ? AAC_RENAME(ff_aac_kbd_short_120) : AAC_RENAME(sine_120);
+    const INTFLOAT *lwindow_prev = ics->use_kb_window[1] ? AAC_RENAME(ff_aac_kbd_long_960) : AAC_RENAME(sine_960);
+    const INTFLOAT *swindow_prev = ics->use_kb_window[1] ? AAC_RENAME(ff_aac_kbd_short_120) : AAC_RENAME(sine_120);
     INTFLOAT *buf  = ac->buf_mdct;
     INTFLOAT *temp = ac->temp;
     int i;
diff --git a/libavcodec/sinewin.h b/libavcodec/sinewin.h
index 329e9bb5be..7b64096a71 100644
--- a/libavcodec/sinewin.h
+++ b/libavcodec/sinewin.h
@@ -38,9 +38,6 @@ 
 #define SINETABLE(size) \
     SINETABLE_CONST DECLARE_ALIGNED(32, INTFLOAT, AAC_RENAME(ff_sine_##size))[size]
 
-#define SINETABLE120960(size) \
-    DECLARE_ALIGNED(32, INTFLOAT, AAC_RENAME(ff_sine_##size))[size]
-
 /**
  * Generate a sine window.
  * @param   window  pointer to half window
@@ -55,11 +52,9 @@  void AAC_RENAME(ff_init_ff_sine_windows)(int index);
 
 extern SINETABLE(  32);
 extern SINETABLE(  64);
-extern SINETABLE120960(120);
 extern SINETABLE( 128);
 extern SINETABLE( 256);
 extern SINETABLE( 512);
-extern SINETABLE120960(960);
 extern SINETABLE(1024);
 extern SINETABLE(2048);
 extern SINETABLE(4096);
diff --git a/libavcodec/sinewin_tablegen.h b/libavcodec/sinewin_tablegen.h
index 3c11cb6282..1959074189 100644
--- a/libavcodec/sinewin_tablegen.h
+++ b/libavcodec/sinewin_tablegen.h
@@ -31,10 +31,6 @@ 
 #include "libavutil/attributes.h"
 #include "libavutil/common.h"
 
-#if !USE_FIXED
-SINETABLE120960(120);
-SINETABLE120960(960);
-#endif
 #if !CONFIG_HARDCODED_TABLES
 SINETABLE(  32);
 SINETABLE(  64);
diff --git a/libavcodec/sinewin_tablegen_template.c b/libavcodec/sinewin_tablegen_template.c
index b8eb407bd8..43ce1ba82e 100644
--- a/libavcodec/sinewin_tablegen_template.c
+++ b/libavcodec/sinewin_tablegen_template.c
@@ -33,8 +33,6 @@ 
 #define SINETABLE_CONST
 #define SINETABLE(size) \
     INTFLOAT AAC_RENAME(ff_sine_##size)[size]
-#define SINETABLE120960(size) \
-    INTFLOAT AAC_RENAME(ff_sine_##size)[size]
 #define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))
 #include "sinewin_tablegen.h"
 #include "tableprint.h"