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authorTimo Rothenpieler <timo@rothenpieler.org>2022-08-10 01:53:10 +0200
committerTimo Rothenpieler <timo@rothenpieler.org>2022-08-19 22:09:36 +0200
commit6dc79f1d04eb88ec97360c45be4cadc66b7e5780 (patch)
tree1d798db458f52f60adba3356d05308c06763c8c0 /libavutil
parentf3fb528cd5bfecec6835a3951c75903a194ae1ad (diff)
avutil/half2float: move non-inline init code out of header
Diffstat (limited to 'libavutil')
-rw-r--r--libavutil/float2half.c53
-rw-r--r--libavutil/float2half.h36
-rw-r--r--libavutil/half2float.c63
-rw-r--r--libavutil/half2float.h46
4 files changed, 120 insertions, 78 deletions
diff --git a/libavutil/float2half.c b/libavutil/float2half.c
new file mode 100644
index 0000000000..c79a3abfa1
--- /dev/null
+++ b/libavutil/float2half.c
@@ -0,0 +1,53 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/float2half.h"
+
+void ff_init_float2half_tables(Float2HalfTables *t)
+{
+ for (int i = 0; i < 256; i++) {
+ int e = i - 127;
+
+ if (e < -24) { // Very small numbers map to zero
+ t->basetable[i|0x000] = 0x0000;
+ t->basetable[i|0x100] = 0x8000;
+ t->shifttable[i|0x000] = 24;
+ t->shifttable[i|0x100] = 24;
+ } else if (e < -14) { // Small numbers map to denorms
+ t->basetable[i|0x000] = (0x0400>>(-e-14));
+ t->basetable[i|0x100] = (0x0400>>(-e-14)) | 0x8000;
+ t->shifttable[i|0x000] = -e-1;
+ t->shifttable[i|0x100] = -e-1;
+ } else if (e <= 15) { // Normal numbers just lose precision
+ t->basetable[i|0x000] = ((e + 15) << 10);
+ t->basetable[i|0x100] = ((e + 15) << 10) | 0x8000;
+ t->shifttable[i|0x000] = 13;
+ t->shifttable[i|0x100] = 13;
+ } else if (e < 128) { // Large numbers map to Infinity
+ t->basetable[i|0x000] = 0x7C00;
+ t->basetable[i|0x100] = 0xFC00;
+ t->shifttable[i|0x000] = 24;
+ t->shifttable[i|0x100] = 24;
+ } else { // Infinity and NaN's stay Infinity and NaN's
+ t->basetable[i|0x000] = 0x7C00;
+ t->basetable[i|0x100] = 0xFC00;
+ t->shifttable[i|0x000] = 13;
+ t->shifttable[i|0x100] = 13;
+ }
+ }
+}
diff --git a/libavutil/float2half.h b/libavutil/float2half.h
index 3548aa1d45..20fdc2a36b 100644
--- a/libavutil/float2half.h
+++ b/libavutil/float2half.h
@@ -26,41 +26,9 @@ typedef struct Float2HalfTables {
uint8_t shifttable[512];
} Float2HalfTables;
-static void init_float2half_tables(Float2HalfTables *t)
-{
- for (int i = 0; i < 256; i++) {
- int e = i - 127;
-
- if (e < -24) { // Very small numbers map to zero
- t->basetable[i|0x000] = 0x0000;
- t->basetable[i|0x100] = 0x8000;
- t->shifttable[i|0x000] = 24;
- t->shifttable[i|0x100] = 24;
- } else if (e < -14) { // Small numbers map to denorms
- t->basetable[i|0x000] = (0x0400>>(-e-14));
- t->basetable[i|0x100] = (0x0400>>(-e-14)) | 0x8000;
- t->shifttable[i|0x000] = -e-1;
- t->shifttable[i|0x100] = -e-1;
- } else if (e <= 15) { // Normal numbers just lose precision
- t->basetable[i|0x000] = ((e + 15) << 10);
- t->basetable[i|0x100] = ((e + 15) << 10) | 0x8000;
- t->shifttable[i|0x000] = 13;
- t->shifttable[i|0x100] = 13;
- } else if (e < 128) { // Large numbers map to Infinity
- t->basetable[i|0x000] = 0x7C00;
- t->basetable[i|0x100] = 0xFC00;
- t->shifttable[i|0x000] = 24;
- t->shifttable[i|0x100] = 24;
- } else { // Infinity and NaN's stay Infinity and NaN's
- t->basetable[i|0x000] = 0x7C00;
- t->basetable[i|0x100] = 0xFC00;
- t->shifttable[i|0x000] = 13;
- t->shifttable[i|0x100] = 13;
- }
- }
-}
+void ff_init_float2half_tables(Float2HalfTables *t);
-static uint16_t float2half(uint32_t f, const Float2HalfTables *t)
+static inline uint16_t float2half(uint32_t f, const Float2HalfTables *t)
{
uint16_t h;
diff --git a/libavutil/half2float.c b/libavutil/half2float.c
new file mode 100644
index 0000000000..1967126f76
--- /dev/null
+++ b/libavutil/half2float.c
@@ -0,0 +1,63 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/half2float.h"
+
+static uint32_t convertmantissa(uint32_t i)
+{
+ int32_t m = i << 13; // Zero pad mantissa bits
+ int32_t e = 0; // Zero exponent
+
+ while (!(m & 0x00800000)) { // While not normalized
+ e -= 0x00800000; // Decrement exponent (1<<23)
+ m <<= 1; // Shift mantissa
+ }
+
+ m &= ~0x00800000; // Clear leading 1 bit
+ e += 0x38800000; // Adjust bias ((127-14)<<23)
+
+ return m | e; // Return combined number
+}
+
+void ff_init_half2float_tables(Half2FloatTables *t)
+{
+ t->mantissatable[0] = 0;
+ for (int i = 1; i < 1024; i++)
+ t->mantissatable[i] = convertmantissa(i);
+ for (int i = 1024; i < 2048; i++)
+ t->mantissatable[i] = 0x38000000UL + ((i - 1024) << 13UL);
+ for (int i = 2048; i < 3072; i++)
+ t->mantissatable[i] = t->mantissatable[i - 1024] | 0x400000UL;
+ t->mantissatable[2048] = t->mantissatable[1024];
+
+ t->exponenttable[0] = 0;
+ for (int i = 1; i < 31; i++)
+ t->exponenttable[i] = i << 23;
+ for (int i = 33; i < 63; i++)
+ t->exponenttable[i] = 0x80000000UL + ((i - 32) << 23UL);
+ t->exponenttable[31]= 0x47800000UL;
+ t->exponenttable[32]= 0x80000000UL;
+ t->exponenttable[63]= 0xC7800000UL;
+
+ t->offsettable[0] = 0;
+ for (int i = 1; i < 64; i++)
+ t->offsettable[i] = 1024;
+ t->offsettable[31] = 2048;
+ t->offsettable[32] = 0;
+ t->offsettable[63] = 2048;
+}
diff --git a/libavutil/half2float.h b/libavutil/half2float.h
index 5696567a8c..428a27a19f 100644
--- a/libavutil/half2float.h
+++ b/libavutil/half2float.h
@@ -27,51 +27,9 @@ typedef struct Half2FloatTables {
uint16_t offsettable[64];
} Half2FloatTables;
-static uint32_t convertmantissa(uint32_t i)
-{
- int32_t m = i << 13; // Zero pad mantissa bits
- int32_t e = 0; // Zero exponent
-
- while (!(m & 0x00800000)) { // While not normalized
- e -= 0x00800000; // Decrement exponent (1<<23)
- m <<= 1; // Shift mantissa
- }
-
- m &= ~0x00800000; // Clear leading 1 bit
- e += 0x38800000; // Adjust bias ((127-14)<<23)
-
- return m | e; // Return combined number
-}
-
-static void init_half2float_tables(Half2FloatTables *t)
-{
- t->mantissatable[0] = 0;
- for (int i = 1; i < 1024; i++)
- t->mantissatable[i] = convertmantissa(i);
- for (int i = 1024; i < 2048; i++)
- t->mantissatable[i] = 0x38000000UL + ((i - 1024) << 13UL);
- for (int i = 2048; i < 3072; i++)
- t->mantissatable[i] = t->mantissatable[i - 1024] | 0x400000UL;
- t->mantissatable[2048] = t->mantissatable[1024];
-
- t->exponenttable[0] = 0;
- for (int i = 1; i < 31; i++)
- t->exponenttable[i] = i << 23;
- for (int i = 33; i < 63; i++)
- t->exponenttable[i] = 0x80000000UL + ((i - 32) << 23UL);
- t->exponenttable[31]= 0x47800000UL;
- t->exponenttable[32]= 0x80000000UL;
- t->exponenttable[63]= 0xC7800000UL;
-
- t->offsettable[0] = 0;
- for (int i = 1; i < 64; i++)
- t->offsettable[i] = 1024;
- t->offsettable[31] = 2048;
- t->offsettable[32] = 0;
- t->offsettable[63] = 2048;
-}
+void ff_init_half2float_tables(Half2FloatTables *t);
-static uint32_t half2float(uint16_t h, const Half2FloatTables *t)
+static inline uint32_t half2float(uint16_t h, const Half2FloatTables *t)
{
uint32_t f;