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ffmpeg.wasm-core
Commit f1d1516e authored by Justin Ruggles's avatar Justin Ruggles
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cosmetics: indentation

parent 1158745a
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libavcodec/mpegaudiodec.c
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...@@ -269,190 +269,190 @@ static inline int l3_unscale(int value, int exponent) ...@@ -269,190 +269,190 @@ static inline int l3_unscale(int value, int exponent)
static void decode_init_static(AVCodec *codec) static void decode_init_static(AVCodec *codec)
{ {
int i, j, k; int i, j, k;
int offset; int offset;
/* scale factors table for layer 1/2 */ /* scale factors table for layer 1/2 */
for (i = 0; i < 64; i++) { for (i = 0; i < 64; i++) {
int shift, mod; int shift, mod;
/* 1.0 (i = 3) is normalized to 2 ^ FRAC_BITS */ /* 1.0 (i = 3) is normalized to 2 ^ FRAC_BITS */
shift = i / 3; shift = i / 3;
mod = i % 3; mod = i % 3;
scale_factor_modshift[i] = mod | (shift << 2); scale_factor_modshift[i] = mod | (shift << 2);
} }
/* scale factor multiply for layer 1 */ /* scale factor multiply for layer 1 */
for (i = 0; i < 15; i++) { for (i = 0; i < 15; i++) {
int n, norm; int n, norm;
n = i + 2; n = i + 2;
norm = ((INT64_C(1) << n) * FRAC_ONE) / ((1 << n) - 1); norm = ((INT64_C(1) << n) * FRAC_ONE) / ((1 << n) - 1);
scale_factor_mult[i][0] = MULLx(norm, FIXR(1.0 * 2.0), FRAC_BITS); scale_factor_mult[i][0] = MULLx(norm, FIXR(1.0 * 2.0), FRAC_BITS);
scale_factor_mult[i][1] = MULLx(norm, FIXR(0.7937005259 * 2.0), FRAC_BITS); scale_factor_mult[i][1] = MULLx(norm, FIXR(0.7937005259 * 2.0), FRAC_BITS);
scale_factor_mult[i][2] = MULLx(norm, FIXR(0.6299605249 * 2.0), FRAC_BITS); scale_factor_mult[i][2] = MULLx(norm, FIXR(0.6299605249 * 2.0), FRAC_BITS);
av_dlog(avctx, "%d: norm=%x s=%x %x %x\n", i, norm, av_dlog(avctx, "%d: norm=%x s=%x %x %x\n", i, norm,
scale_factor_mult[i][0], scale_factor_mult[i][0],
scale_factor_mult[i][1], scale_factor_mult[i][1],
scale_factor_mult[i][2]); scale_factor_mult[i][2]);
} }
RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window)); RENAME(ff_mpa_synth_init)(RENAME(ff_mpa_synth_window));
/* huffman decode tables */ /* huffman decode tables */
offset = 0; offset = 0;
for (i = 1; i < 16; i++) { for (i = 1; i < 16; i++) {
const HuffTable *h = &mpa_huff_tables[i]; const HuffTable *h = &mpa_huff_tables[i];
int xsize, x, y; int xsize, x, y;
uint8_t tmp_bits [512]; uint8_t tmp_bits [512];
uint16_t tmp_codes[512]; uint16_t tmp_codes[512];
memset(tmp_bits , 0, sizeof(tmp_bits )); memset(tmp_bits , 0, sizeof(tmp_bits ));
memset(tmp_codes, 0, sizeof(tmp_codes)); memset(tmp_codes, 0, sizeof(tmp_codes));
xsize = h->xsize; xsize = h->xsize;
j = 0; j = 0;
for (x = 0; x < xsize; x++) { for (x = 0; x < xsize; x++) {
for (y = 0; y < xsize; y++) { for (y = 0; y < xsize; y++) {
tmp_bits [(x << 5) | y | ((x&&y)<<4)]= h->bits [j ]; tmp_bits [(x << 5) | y | ((x&&y)<<4)]= h->bits [j ];
tmp_codes[(x << 5) | y | ((x&&y)<<4)]= h->codes[j++]; tmp_codes[(x << 5) | y | ((x&&y)<<4)]= h->codes[j++];
}
} }
/* XXX: fail test */
huff_vlc[i].table = huff_vlc_tables+offset;
huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i];
init_vlc(&huff_vlc[i], 7, 512,
tmp_bits, 1, 1, tmp_codes, 2, 2,
INIT_VLC_USE_NEW_STATIC);
offset += huff_vlc_tables_sizes[i];
} }
assert(offset == FF_ARRAY_ELEMS(huff_vlc_tables));
offset = 0;
for (i = 0; i < 2; i++) {
huff_quad_vlc[i].table = huff_quad_vlc_tables+offset;
huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i];
init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16,
mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1,
INIT_VLC_USE_NEW_STATIC);
offset += huff_quad_vlc_tables_sizes[i];
}
assert(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables));
for (i = 0; i < 9; i++) { /* XXX: fail test */
k = 0; huff_vlc[i].table = huff_vlc_tables+offset;
for (j = 0; j < 22; j++) { huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i];
band_index_long[i][j] = k; init_vlc(&huff_vlc[i], 7, 512,
k += band_size_long[i][j]; tmp_bits, 1, 1, tmp_codes, 2, 2,
} INIT_VLC_USE_NEW_STATIC);
band_index_long[i][22] = k; offset += huff_vlc_tables_sizes[i];
}
assert(offset == FF_ARRAY_ELEMS(huff_vlc_tables));
offset = 0;
for (i = 0; i < 2; i++) {
huff_quad_vlc[i].table = huff_quad_vlc_tables+offset;
huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i];
init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16,
mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1,
INIT_VLC_USE_NEW_STATIC);
offset += huff_quad_vlc_tables_sizes[i];
}
assert(offset == FF_ARRAY_ELEMS(huff_quad_vlc_tables));
for (i = 0; i < 9; i++) {
k = 0;
for (j = 0; j < 22; j++) {
band_index_long[i][j] = k;
k += band_size_long[i][j];
} }
band_index_long[i][22] = k;
}
/* compute n ^ (4/3) and store it in mantissa/exp format */ /* compute n ^ (4/3) and store it in mantissa/exp format */
mpegaudio_tableinit(); mpegaudio_tableinit();
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++) {
if (ff_mpa_quant_bits[i] < 0) { if (ff_mpa_quant_bits[i] < 0) {
for (j = 0; j < (1 << (-ff_mpa_quant_bits[i]+1)); j++) { for (j = 0; j < (1 << (-ff_mpa_quant_bits[i]+1)); j++) {
int val1, val2, val3, steps; int val1, val2, val3, steps;
int val = j; int val = j;
steps = ff_mpa_quant_steps[i]; steps = ff_mpa_quant_steps[i];
val1 = val % steps; val1 = val % steps;
val /= steps; val /= steps;
val2 = val % steps; val2 = val % steps;
val3 = val / steps; val3 = val / steps;
division_tabs[i][j] = val1 + (val2 << 4) + (val3 << 8); division_tabs[i][j] = val1 + (val2 << 4) + (val3 << 8);
}
} }
} }
}
for (i = 0; i < 7; i++) { for (i = 0; i < 7; i++) {
float f; float f;
INTFLOAT v; INTFLOAT v;
if (i != 6) { if (i != 6) {
f = tan((double)i * M_PI / 12.0); f = tan((double)i * M_PI / 12.0);
v = FIXR(f / (1.0 + f)); v = FIXR(f / (1.0 + f));
} else { } else {
v = FIXR(1.0); v = FIXR(1.0);
}
is_table[0][ i] = v;
is_table[1][6 - i] = v;
} }
/* invalid values */ is_table[0][ i] = v;
for (i = 7; i < 16; i++) is_table[1][6 - i] = v;
is_table[0][i] = is_table[1][i] = 0.0; }
/* invalid values */
for (i = 0; i < 16; i++) { for (i = 7; i < 16; i++)
double f; is_table[0][i] = is_table[1][i] = 0.0;
int e, k;
for (i = 0; i < 16; i++) {
for (j = 0; j < 2; j++) { double f;
e = -(j + 1) * ((i + 1) >> 1); int e, k;
f = pow(2.0, e / 4.0);
k = i & 1; for (j = 0; j < 2; j++) {
is_table_lsf[j][k ^ 1][i] = FIXR(f); e = -(j + 1) * ((i + 1) >> 1);
is_table_lsf[j][k ][i] = FIXR(1.0); f = pow(2.0, e / 4.0);
av_dlog(avctx, "is_table_lsf %d %d: %f %f\n", k = i & 1;
i, j, (float) is_table_lsf[j][0][i], is_table_lsf[j][k ^ 1][i] = FIXR(f);
(float) is_table_lsf[j][1][i]); is_table_lsf[j][k ][i] = FIXR(1.0);
} av_dlog(avctx, "is_table_lsf %d %d: %f %f\n",
i, j, (float) is_table_lsf[j][0][i],
(float) is_table_lsf[j][1][i]);
} }
}
for (i = 0; i < 8; i++) { for (i = 0; i < 8; i++) {
float ci, cs, ca; float ci, cs, ca;
ci = ci_table[i]; ci = ci_table[i];
cs = 1.0 / sqrt(1.0 + ci * ci); cs = 1.0 / sqrt(1.0 + ci * ci);
ca = cs * ci; ca = cs * ci;
#if !CONFIG_FLOAT #if !CONFIG_FLOAT
csa_table[i][0] = FIXHR(cs/4); csa_table[i][0] = FIXHR(cs/4);
csa_table[i][1] = FIXHR(ca/4); csa_table[i][1] = FIXHR(ca/4);
csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4); csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4);
csa_table[i][3] = FIXHR(ca/4) - FIXHR(cs/4); csa_table[i][3] = FIXHR(ca/4) - FIXHR(cs/4);
#else #else
csa_table[i][0] = cs; csa_table[i][0] = cs;
csa_table[i][1] = ca; csa_table[i][1] = ca;
csa_table[i][2] = ca + cs; csa_table[i][2] = ca + cs;
csa_table[i][3] = ca - cs; csa_table[i][3] = ca - cs;
#endif #endif
} }
/* compute mdct windows */ /* compute mdct windows */
for (i = 0; i < 36; i++) { for (i = 0; i < 36; i++) {
for (j = 0; j < 4; j++) { for (j = 0; j < 4; j++) {
double d; double d;
if (j == 2 && i % 3 != 1)
continue;
d = sin(M_PI * (i + 0.5) / 36.0);
if (j == 1) {
if (i >= 30) d = 0;
else if (i >= 24) d = sin(M_PI * (i - 18 + 0.5) / 12.0);
else if (i >= 18) d = 1;
} else if (j == 3) {
if (i < 6) d = 0;
else if (i < 12) d = sin(M_PI * (i - 6 + 0.5) / 12.0);
else if (i < 18) d = 1;
}
//merge last stage of imdct into the window coefficients
d *= 0.5 / cos(M_PI * (2 * i + 19) / 72);
if (j == 2) if (j == 2 && i % 3 != 1)
mdct_win[j][i/3] = FIXHR((d / (1<<5))); continue;
else
mdct_win[j][i ] = FIXHR((d / (1<<5))); d = sin(M_PI * (i + 0.5) / 36.0);
if (j == 1) {
if (i >= 30) d = 0;
else if (i >= 24) d = sin(M_PI * (i - 18 + 0.5) / 12.0);
else if (i >= 18) d = 1;
} else if (j == 3) {
if (i < 6) d = 0;
else if (i < 12) d = sin(M_PI * (i - 6 + 0.5) / 12.0);
else if (i < 18) d = 1;
} }
//merge last stage of imdct into the window coefficients
d *= 0.5 / cos(M_PI * (2 * i + 19) / 72);
if (j == 2)
mdct_win[j][i/3] = FIXHR((d / (1<<5)));
else
mdct_win[j][i ] = FIXHR((d / (1<<5)));
} }
}
/* NOTE: we do frequency inversion adter the MDCT by changing /* NOTE: we do frequency inversion adter the MDCT by changing
the sign of the right window coefs */ the sign of the right window coefs */
for (j = 0; j < 4; j++) { for (j = 0; j < 4; j++) {
for (i = 0; i < 36; i += 2) { for (i = 0; i < 36; i += 2) {
mdct_win[j + 4][i ] = mdct_win[j][i ]; mdct_win[j + 4][i ] = mdct_win[j][i ];
mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1]; mdct_win[j + 4][i + 1] = -mdct_win[j][i + 1];
}
} }
}
} }
static av_cold int decode_init(AVCodecContext * avctx) static av_cold int decode_init(AVCodecContext * avctx)
......
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