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nixpkgs/pkgs/development/libraries/a52dec/A01-thread-safe.patch
Wout Mertens ac80d45419 a52dec: Add patches from Handbrake project 
this project hasn't been updated in 10 years, so adding patches that
don't break the API should be ok.

Patches:
- A00: Make a52-state-t public
- A01: Make it thread-safe (changing internal API by adding state
objects)
- A02: Quell common error
- A03: Fix for automake vs autoconf
2014-05-04 01:56:48 +02:00

463 lines
14 KiB
Diff
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diff -Naur a52dec.old/include/a52.h a52dec.new/include/a52.h
--- a52dec.old/include/a52.h 2012-07-16 14:24:14.000000000 +0200
+++ a52dec.new/include/a52.h 2012-07-16 14:31:37.000000000 +0200
@@ -42,6 +42,11 @@
} expbap_t;
typedef struct {
+ sample_t real;
+ sample_t imag;
+} complex_t;
+
+typedef struct {
uint8_t fscod; /* sample rate */
uint8_t halfrate; /* halfrate factor */
uint8_t acmod; /* coded channels */
@@ -94,6 +99,20 @@
sample_t * samples;
int downmixed;
+
+ /* Root values for IFFT */
+ sample_t * roots16; // size 3
+ sample_t * roots32; // size 7
+ sample_t * roots64; // size 15
+ sample_t * roots128; // size 31
+
+ /* Twiddle factors for IMDCT */
+ complex_t * pre1; // size 128
+ complex_t * post1; // size 64
+ complex_t * pre2; // size 64
+ complex_t * post2; // size 32
+
+ sample_t * a52_imdct_window; // size 256
} a52_state_t;
#define A52_CHANNEL 0
diff -Naur a52dec.old/liba52/a52_internal.h a52dec.new/liba52/a52_internal.h
--- a52dec.old/liba52/a52_internal.h 2012-07-16 14:24:14.000000000 +0200
+++ a52dec.new/liba52/a52_internal.h 2012-07-16 14:28:33.000000000 +0200
@@ -49,6 +49,6 @@
sample_t clev, sample_t slev);
void a52_upmix (sample_t * samples, int acmod, int output);
-void a52_imdct_init (uint32_t mm_accel);
-void a52_imdct_256 (sample_t * data, sample_t * delay, sample_t bias);
-void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias);
+void a52_imdct_init (a52_state_t * state, uint32_t mm_accel);
+void a52_imdct_256 (a52_state_t * state, sample_t * data, sample_t * delay, sample_t bias);
+void a52_imdct_512 (a52_state_t * state, sample_t * data, sample_t * delay, sample_t bias);
diff -Naur a52dec.old/liba52/imdct.c a52dec.new/liba52/imdct.c
--- a52dec.old/liba52/imdct.c 2012-07-16 14:24:14.000000000 +0200
+++ a52dec.new/liba52/imdct.c 2012-07-16 14:33:00.000000000 +0200
@@ -40,11 +40,6 @@
#include "a52_internal.h"
#include "mm_accel.h"
-typedef struct complex_s {
- sample_t real;
- sample_t imag;
-} complex_t;
-
static uint8_t fftorder[] = {
0,128, 64,192, 32,160,224, 96, 16,144, 80,208,240,112, 48,176,
8,136, 72,200, 40,168,232,104,248,120, 56,184, 24,152,216, 88,
@@ -56,22 +51,8 @@
6,134, 70,198, 38,166,230,102,246,118, 54,182, 22,150,214, 86
};
-/* Root values for IFFT */
-static sample_t roots16[3];
-static sample_t roots32[7];
-static sample_t roots64[15];
-static sample_t roots128[31];
-
-/* Twiddle factors for IMDCT */
-static complex_t pre1[128];
-static complex_t post1[64];
-static complex_t pre2[64];
-static complex_t post2[32];
-
-static sample_t a52_imdct_window[256];
-
-static void (* ifft128) (complex_t * buf);
-static void (* ifft64) (complex_t * buf);
+static void (* ifft128) (a52_state_t * state, complex_t * buf);
+static void (* ifft64) (a52_state_t * state, complex_t * buf);
static inline void ifft2 (complex_t * buf)
{
@@ -167,7 +148,7 @@
a1.imag += tmp4; \
} while (0)
-static inline void ifft8 (complex_t * buf)
+static inline void ifft8 (a52_state_t * state, complex_t * buf)
{
double tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8;
@@ -175,7 +156,7 @@
ifft2 (buf + 4);
ifft2 (buf + 6);
BUTTERFLY_ZERO (buf[0], buf[2], buf[4], buf[6]);
- BUTTERFLY_HALF (buf[1], buf[3], buf[5], buf[7], roots16[1]);
+ BUTTERFLY_HALF (buf[1], buf[3], buf[5], buf[7], state->roots16[1]);
}
static void ifft_pass (complex_t * buf, sample_t * weight, int n)
@@ -205,66 +186,66 @@
} while (--i);
}
-static void ifft16 (complex_t * buf)
+static void ifft16 (a52_state_t * state, complex_t * buf)
{
- ifft8 (buf);
+ ifft8 (state, buf);
ifft4 (buf + 8);
ifft4 (buf + 12);
- ifft_pass (buf, roots16 - 4, 4);
+ ifft_pass (buf, state->roots16 - 4, 4);
}
-static void ifft32 (complex_t * buf)
+static void ifft32 (a52_state_t * state, complex_t * buf)
{
- ifft16 (buf);
- ifft8 (buf + 16);
- ifft8 (buf + 24);
- ifft_pass (buf, roots32 - 8, 8);
+ ifft16 (state, buf);
+ ifft8 (state, buf + 16);
+ ifft8 (state, buf + 24);
+ ifft_pass (buf, state->roots32 - 8, 8);
}
-static void ifft64_c (complex_t * buf)
+static void ifft64_c (a52_state_t * state, complex_t * buf)
{
- ifft32 (buf);
- ifft16 (buf + 32);
- ifft16 (buf + 48);
- ifft_pass (buf, roots64 - 16, 16);
+ ifft32 (state, buf);
+ ifft16 (state, buf + 32);
+ ifft16 (state, buf + 48);
+ ifft_pass (buf, state->roots64 - 16, 16);
}
-static void ifft128_c (complex_t * buf)
+static void ifft128_c (a52_state_t * state, complex_t * buf)
{
- ifft32 (buf);
- ifft16 (buf + 32);
- ifft16 (buf + 48);
- ifft_pass (buf, roots64 - 16, 16);
+ ifft32 (state, buf);
+ ifft16 (state, buf + 32);
+ ifft16 (state, buf + 48);
+ ifft_pass (buf, state->roots64 - 16, 16);
- ifft32 (buf + 64);
- ifft32 (buf + 96);
- ifft_pass (buf, roots128 - 32, 32);
+ ifft32 (state, buf + 64);
+ ifft32 (state, buf + 96);
+ ifft_pass (buf, state->roots128 - 32, 32);
}
-void a52_imdct_512 (sample_t * data, sample_t * delay, sample_t bias)
+void a52_imdct_512 (a52_state_t * state, sample_t * data, sample_t * delay, sample_t bias)
{
int i, k;
sample_t t_r, t_i, a_r, a_i, b_r, b_i, w_1, w_2;
- const sample_t * window = a52_imdct_window;
+ const sample_t * window = state->a52_imdct_window;
complex_t buf[128];
for (i = 0; i < 128; i++) {
k = fftorder[i];
- t_r = pre1[i].real;
- t_i = pre1[i].imag;
+ t_r = state->pre1[i].real;
+ t_i = state->pre1[i].imag;
buf[i].real = t_i * data[255-k] + t_r * data[k];
buf[i].imag = t_r * data[255-k] - t_i * data[k];
}
- ifft128 (buf);
+ ifft128 (state, buf);
/* Post IFFT complex multiply plus IFFT complex conjugate*/
/* Window and convert to real valued signal */
for (i = 0; i < 64; i++) {
/* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */
- t_r = post1[i].real;
- t_i = post1[i].imag;
+ t_r = state->post1[i].real;
+ t_i = state->post1[i].imag;
a_r = t_r * buf[i].real + t_i * buf[i].imag;
a_i = t_i * buf[i].real - t_r * buf[i].imag;
@@ -285,18 +266,18 @@
}
}
-void a52_imdct_256(sample_t * data, sample_t * delay, sample_t bias)
+void a52_imdct_256(a52_state_t * state, sample_t * data, sample_t * delay, sample_t bias)
{
int i, k;
sample_t t_r, t_i, a_r, a_i, b_r, b_i, c_r, c_i, d_r, d_i, w_1, w_2;
- const sample_t * window = a52_imdct_window;
+ const sample_t * window = state->a52_imdct_window;
complex_t buf1[64], buf2[64];
/* Pre IFFT complex multiply plus IFFT cmplx conjugate */
for (i = 0; i < 64; i++) {
k = fftorder[i];
- t_r = pre2[i].real;
- t_i = pre2[i].imag;
+ t_r = state->pre2[i].real;
+ t_i = state->pre2[i].imag;
buf1[i].real = t_i * data[254-k] + t_r * data[k];
buf1[i].imag = t_r * data[254-k] - t_i * data[k];
@@ -305,15 +286,15 @@
buf2[i].imag = t_r * data[255-k] - t_i * data[k+1];
}
- ifft64 (buf1);
- ifft64 (buf2);
+ ifft64 (state, buf1);
+ ifft64 (state, buf2);
/* Post IFFT complex multiply */
/* Window and convert to real valued signal */
for (i = 0; i < 32; i++) {
/* y1[n] = z1[n] * (xcos2[n] + j * xs in2[n]) ; */
- t_r = post2[i].real;
- t_i = post2[i].imag;
+ t_r = state->post2[i].real;
+ t_i = state->post2[i].imag;
a_r = t_r * buf1[i].real + t_i * buf1[i].imag;
a_i = t_i * buf1[i].real - t_r * buf1[i].imag;
@@ -362,7 +343,7 @@
return bessel;
}
-void a52_imdct_init (uint32_t mm_accel)
+void a52_imdct_init (a52_state_t * state, uint32_t mm_accel)
{
int i, k;
double sum;
@@ -371,50 +352,50 @@
sum = 0;
for (i = 0; i < 256; i++) {
sum += besselI0 (i * (256 - i) * (5 * M_PI / 256) * (5 * M_PI / 256));
- a52_imdct_window[i] = sum;
+ state->a52_imdct_window[i] = sum;
}
sum++;
for (i = 0; i < 256; i++)
- a52_imdct_window[i] = sqrt (a52_imdct_window[i] / sum);
+ state->a52_imdct_window[i] = sqrt (state->a52_imdct_window[i] / sum);
for (i = 0; i < 3; i++)
- roots16[i] = cos ((M_PI / 8) * (i + 1));
+ state->roots16[i] = cos ((M_PI / 8) * (i + 1));
for (i = 0; i < 7; i++)
- roots32[i] = cos ((M_PI / 16) * (i + 1));
+ state->roots32[i] = cos ((M_PI / 16) * (i + 1));
for (i = 0; i < 15; i++)
- roots64[i] = cos ((M_PI / 32) * (i + 1));
+ state->roots64[i] = cos ((M_PI / 32) * (i + 1));
for (i = 0; i < 31; i++)
- roots128[i] = cos ((M_PI / 64) * (i + 1));
+ state->roots128[i] = cos ((M_PI / 64) * (i + 1));
for (i = 0; i < 64; i++) {
k = fftorder[i] / 2 + 64;
- pre1[i].real = cos ((M_PI / 256) * (k - 0.25));
- pre1[i].imag = sin ((M_PI / 256) * (k - 0.25));
+ state->pre1[i].real = cos ((M_PI / 256) * (k - 0.25));
+ state->pre1[i].imag = sin ((M_PI / 256) * (k - 0.25));
}
for (i = 64; i < 128; i++) {
k = fftorder[i] / 2 + 64;
- pre1[i].real = -cos ((M_PI / 256) * (k - 0.25));
- pre1[i].imag = -sin ((M_PI / 256) * (k - 0.25));
+ state->pre1[i].real = -cos ((M_PI / 256) * (k - 0.25));
+ state->pre1[i].imag = -sin ((M_PI / 256) * (k - 0.25));
}
for (i = 0; i < 64; i++) {
- post1[i].real = cos ((M_PI / 256) * (i + 0.5));
- post1[i].imag = sin ((M_PI / 256) * (i + 0.5));
+ state->post1[i].real = cos ((M_PI / 256) * (i + 0.5));
+ state->post1[i].imag = sin ((M_PI / 256) * (i + 0.5));
}
for (i = 0; i < 64; i++) {
k = fftorder[i] / 4;
- pre2[i].real = cos ((M_PI / 128) * (k - 0.25));
- pre2[i].imag = sin ((M_PI / 128) * (k - 0.25));
+ state->pre2[i].real = cos ((M_PI / 128) * (k - 0.25));
+ state->pre2[i].imag = sin ((M_PI / 128) * (k - 0.25));
}
for (i = 0; i < 32; i++) {
- post2[i].real = cos ((M_PI / 128) * (i + 0.5));
- post2[i].imag = sin ((M_PI / 128) * (i + 0.5));
+ state->post2[i].real = cos ((M_PI / 128) * (i + 0.5));
+ state->post2[i].imag = sin ((M_PI / 128) * (i + 0.5));
}
#ifdef LIBA52_DJBFFT
diff -Naur a52dec.old/liba52/parse.c a52dec.new/liba52/parse.c
--- a52dec.old/liba52/parse.c 2012-07-16 14:24:14.000000000 +0200
+++ a52dec.new/liba52/parse.c 2012-07-16 14:33:00.000000000 +0200
@@ -56,16 +56,53 @@
a52_state_t * state;
int i;
- state = malloc (sizeof (a52_state_t));
+ state = calloc (1, sizeof (a52_state_t));
if (state == NULL)
return NULL;
state->samples = memalign (16, 256 * 12 * sizeof (sample_t));
if (state->samples == NULL) {
- free (state);
- return NULL;
+ goto fail;
}
+ /* Root values for IFFT */
+ state->roots16 = memalign (16, 3 * sizeof (sample_t));
+ if (state->roots16 == NULL)
+ goto fail;
+
+ state->roots32 = memalign (16, 7 * sizeof (sample_t));
+ if (state->roots32 == NULL)
+ goto fail;
+
+ state->roots64 = memalign (16, 15 * sizeof (sample_t));
+ if (state->roots64 == NULL)
+ goto fail;
+
+ state->roots128 = memalign (16, 31 * sizeof (sample_t));
+ if (state->roots128 == NULL)
+ goto fail;
+
+ /* Twiddle factors for IMDCT */
+ state->pre1 = memalign (16, 128 * sizeof (complex_t));
+ if (state->pre1 == NULL)
+ goto fail;
+
+ state->post1 = memalign (16, 64 * sizeof (complex_t));
+ if (state->post1 == NULL)
+ goto fail;
+
+ state->pre2 = memalign (16, 64 * sizeof (complex_t));
+ if (state->pre2 == NULL)
+ goto fail;
+
+ state->post2 = memalign (16, 32 * sizeof (complex_t));
+ if (state->post2 == NULL)
+ goto fail;
+
+ state->a52_imdct_window = memalign (16, 256 * sizeof (sample_t));
+ if (state->a52_imdct_window == NULL)
+ goto fail;
+
for (i = 0; i < 256 * 12; i++)
state->samples[i] = 0;
@@ -73,9 +110,27 @@
state->lfsr_state = 1;
- a52_imdct_init (mm_accel);
+ a52_imdct_init (state, mm_accel);
return state;
+
+fail:
+ if ( state )
+ {
+ free (state->a52_imdct_window);
+ free (state->post2);
+ free (state->pre2);
+ free (state->post1);
+ free (state->pre1);
+ free (state->roots128);
+ free (state->roots64);
+ free (state->roots32);
+ free (state->roots16);
+ free (state->samples);
+ free (state);
+ }
+ return NULL;
+
}
sample_t * a52_samples (a52_state_t * state)
@@ -825,7 +880,7 @@
state->dynrng, 0, 7);
for (i = 7; i < 256; i++)
(samples-256)[i] = 0;
- a52_imdct_512 (samples - 256, samples + 1536 - 256, state->bias);
+ a52_imdct_512 (state, samples - 256, samples + 1536 - 256, state->bias);
} else {
/* just skip the LFE coefficients */
coeff_get (state, samples + 1280, &state->lfe_expbap, &quantizer,
@@ -854,10 +909,10 @@
if (coeff[i]) {
if (blksw[i])
- a52_imdct_256 (samples + 256 * i, samples + 1536 + 256 * i,
+ a52_imdct_256 (state, samples + 256 * i, samples + 1536 + 256 * i,
bias);
else
- a52_imdct_512 (samples + 256 * i, samples + 1536 + 256 * i,
+ a52_imdct_512 (state, samples + 256 * i, samples + 1536 + 256 * i,
bias);
} else {
int j;
@@ -883,11 +938,11 @@
if (blksw[0])
for (i = 0; i < nfchans; i++)
- a52_imdct_256 (samples + 256 * i, samples + 1536 + 256 * i,
+ a52_imdct_256 (state, samples + 256 * i, samples + 1536 + 256 * i,
state->bias);
else
for (i = 0; i < nfchans; i++)
- a52_imdct_512 (samples + 256 * i, samples + 1536 + 256 * i,
+ a52_imdct_512 (state, samples + 256 * i, samples + 1536 + 256 * i,
state->bias);
}
@@ -896,6 +951,15 @@
void a52_free (a52_state_t * state)
{
+ free (state->a52_imdct_window);
+ free (state->post2);
+ free (state->pre2);
+ free (state->post1);
+ free (state->pre1);
+ free (state->roots128);
+ free (state->roots64);
+ free (state->roots32);
+ free (state->roots16);
free (state->samples);
free (state);
}
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