***********************************/
#include "libavutil/libm.h"
-#include "libavutil/thread.h"
#include "libavutil/float_dsp.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "psymodel.h"
-static AVOnce aac_table_init = AV_ONCE_INIT;
-
static void put_pce(PutBitContext *pb, AVCodecContext *avctx)
{
int i, j;
return 0;
}
-static av_cold void aac_encode_init_tables(void)
-{
- ff_aac_tableinit();
-}
-
static av_cold int aac_encode_init(AVCodecContext *avctx)
{
AACEncContext *s = avctx->priv_data;
if (HAVE_MIPSDSP)
ff_aac_coder_init_mips(s);
- if ((ret = ff_thread_once(&aac_table_init, &aac_encode_init_tables)) != 0)
- return AVERROR_UNKNOWN;
-
ff_af_queue_init(avctx, &s->afq);
+ ff_aac_tableinit();
return 0;
}
*/
#include "libavutil/mem.h"
+#include "libavutil/thread.h"
#include "aac.h"
+#include "aactab.h"
#include <stdint.h>
0xffecff1c, 0xffed391e, 0xffed740c, 0xffedafb1,
0xffedebe1, 0xffee287d, 0xffee654e, 0xffeea23f,
};
+
+static void aac_tableinit(void)
+{
+ /* 2^(i/16) for 0 <= i <= 15 */
+ static const float exp2_lut[] = {
+ 1.00000000000000000000,
+ 1.04427378242741384032,
+ 1.09050773266525765921,
+ 1.13878863475669165370,
+ 1.18920711500272106672,
+ 1.24185781207348404859,
+ 1.29683955465100966593,
+ 1.35425554693689272830,
+ 1.41421356237309504880,
+ 1.47682614593949931139,
+ 1.54221082540794082361,
+ 1.61049033194925430818,
+ 1.68179283050742908606,
+ 1.75625216037329948311,
+ 1.83400808640934246349,
+ 1.91520656139714729387,
+ };
+ float t1 = 8.8817841970012523233890533447265625e-16; // 2^(-50)
+ float t2 = 3.63797880709171295166015625e-12; // 2^(-38)
+ int t1_inc_cur, t2_inc_cur;
+ int t1_inc_prev = 0;
+ int t2_inc_prev = 8;
+
+ for (int i = 0; i < 428; i++) {
+ t1_inc_cur = 4 * (i % 4);
+ t2_inc_cur = (8 + 3*i) % 16;
+ if (t1_inc_cur < t1_inc_prev)
+ t1 *= 2;
+ if (t2_inc_cur < t2_inc_prev)
+ t2 *= 2;
+ // A much more efficient and accurate way of doing:
+ // ff_aac_pow2sf_tab[i] = pow(2, (i - POW_SF2_ZERO) / 4.0);
+ // ff_aac_pow34sf_tab[i] = pow(ff_aac_pow2sf_tab[i], 3.0/4.0);
+ ff_aac_pow2sf_tab[i] = t1 * exp2_lut[t1_inc_cur];
+ ff_aac_pow34sf_tab[i] = t2 * exp2_lut[t2_inc_cur];
+ t1_inc_prev = t1_inc_cur;
+ t2_inc_prev = t2_inc_cur;
+ }
+}
+
+void ff_aac_tableinit(void)
+{
+ static AVOnce init_static_once = AV_ONCE_INIT;
+ ff_thread_once(&init_static_once, aac_tableinit);
+}
extern float ff_aac_pow2sf_tab[428];
extern float ff_aac_pow34sf_tab[428];
-static inline void ff_aac_tableinit(void)
-{
- int i;
-
- /* 2^(i/16) for 0 <= i <= 15 */
- static const float exp2_lut[] = {
- 1.00000000000000000000,
- 1.04427378242741384032,
- 1.09050773266525765921,
- 1.13878863475669165370,
- 1.18920711500272106672,
- 1.24185781207348404859,
- 1.29683955465100966593,
- 1.35425554693689272830,
- 1.41421356237309504880,
- 1.47682614593949931139,
- 1.54221082540794082361,
- 1.61049033194925430818,
- 1.68179283050742908606,
- 1.75625216037329948311,
- 1.83400808640934246349,
- 1.91520656139714729387,
- };
- float t1 = 8.8817841970012523233890533447265625e-16; // 2^(-50)
- float t2 = 3.63797880709171295166015625e-12; // 2^(-38)
- int t1_inc_cur, t2_inc_cur;
- int t1_inc_prev = 0;
- int t2_inc_prev = 8;
-
- for (i = 0; i < 428; i++) {
- t1_inc_cur = 4 * (i % 4);
- t2_inc_cur = (8 + 3*i) % 16;
- if (t1_inc_cur < t1_inc_prev)
- t1 *= 2;
- if (t2_inc_cur < t2_inc_prev)
- t2 *= 2;
- // A much more efficient and accurate way of doing:
- // ff_aac_pow2sf_tab[i] = pow(2, (i - POW_SF2_ZERO) / 4.0);
- // ff_aac_pow34sf_tab[i] = pow(ff_aac_pow2sf_tab[i], 3.0/4.0);
- ff_aac_pow2sf_tab[i] = t1 * exp2_lut[t1_inc_cur];
- ff_aac_pow34sf_tab[i] = t2 * exp2_lut[t2_inc_cur];
- t1_inc_prev = t1_inc_cur;
- t2_inc_prev = t2_inc_cur;
- }
-}
+void ff_aac_tableinit(void);
/* @name ltp_coef
* Table of the LTP coefficients