Chiebot-Mirror
/
FFmpeg
8
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ac3: move ac3_downmix() from dsputil to ac3dsp

Browse Source 
Signed-off-by: Mans Rullgard <mans@mansr.com>
pull/28/head
Mans Rullgard 13 years ago
parent b901c30da6
commit 97cb9236cf
8 changed files with 154 additions and 153 deletions
Split View
  1. 40
      libavcodec/ac3dec.c
  2. 3
      libavcodec/ac3dec.h
  3. 26
      libavcodec/ac3dsp.c
  4. 3
      libavcodec/ac3dsp.h
  5. 4
      libavcodec/dsputil.c
  6. 1
      libavcodec/dsputil.h
  7. 119
      libavcodec/x86/ac3dsp_init.c
  8. 111
      libavcodec/x86/dsputil_mmx.c

40
libavcodec/ac3dec.c
Unescape View File

@ -620,34 +620,6 @@ static inline void do_imdct(AC3DecodeContext *s, int channels)
}
}
/**
* Downmix the output to mono or stereo.
*/
void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int i, j;
float v0, v1;
if (out_ch == 2) {
for (i = 0; i < len; i++) {
v0 = v1 = 0.0f;
for (j = 0; j < in_ch; j++) {
v0 += samples[j][i] * matrix[j][0];
v1 += samples[j][i] * matrix[j][1];
}
samples[0][i] = v0;
samples[1][i] = v1;
}
} else if (out_ch == 1) {
for (i = 0; i < len; i++) {
v0 = 0.0f;
for (j = 0; j < in_ch; j++)
v0 += samples[j][i] * matrix[j][0];
samples[0][i] = v0;
}
}
}
/**
* Upmix delay samples from stereo to original channel layout.
*/
@ -1266,19 +1238,19 @@ static int decode_audio_block(AC3DecodeContext *s, int blk)
do_imdct(s, s->channels);
if (downmix_output) {
s->dsp.ac3_downmix(s->output, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
s->ac3dsp.downmix(s->output, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
}
} else {
if (downmix_output) {
s->dsp.ac3_downmix(s->transform_coeffs + 1, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
s->ac3dsp.downmix(s->transform_coeffs + 1, s->downmix_coeffs,
s->out_channels, s->fbw_channels, 256);
}
if (downmix_output && !s->downmixed) {
s->downmixed = 1;
s->dsp.ac3_downmix(s->delay, s->downmix_coeffs, s->out_channels,
s->fbw_channels, 128);
s->ac3dsp.downmix(s->delay, s->downmix_coeffs, s->out_channels,
s->fbw_channels, 128);
}
do_imdct(s, s->out_channels);

3
libavcodec/ac3dec.h
Unescape View File

@ -221,9 +221,6 @@ int ff_eac3_parse_header(AC3DecodeContext *s);
*/
void ff_eac3_decode_transform_coeffs_aht_ch(AC3DecodeContext *s, int ch);
void ff_ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len);
/**
* Apply spectral extension to each channel by copying lower frequency
* coefficients to higher frequency bins and applying side information to

26
libavcodec/ac3dsp.c
Unescape View File

@ -171,6 +171,31 @@ static void ac3_extract_exponents_c(uint8_t *exp, int32_t *coef, int nb_coefs)
}
}
static void ac3_downmix_c(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int i, j;
float v0, v1;
if (out_ch == 2) {
for (i = 0; i < len; i++) {
v0 = v1 = 0.0f;
for (j = 0; j < in_ch; j++) {
v0 += samples[j][i] * matrix[j][0];
v1 += samples[j][i] * matrix[j][1];
}
samples[0][i] = v0;
samples[1][i] = v1;
}
} else if (out_ch == 1) {
for (i = 0; i < len; i++) {
v0 = 0.0f;
for (j = 0; j < in_ch; j++)
v0 += samples[j][i] * matrix[j][0];
samples[0][i] = v0;
}
}
}
av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
{
c->ac3_exponent_min = ac3_exponent_min_c;
@ -182,6 +207,7 @@ av_cold void ff_ac3dsp_init(AC3DSPContext *c, int bit_exact)
c->update_bap_counts = ac3_update_bap_counts_c;
c->compute_mantissa_size = ac3_compute_mantissa_size_c;
c->extract_exponents = ac3_extract_exponents_c;
c->downmix = ac3_downmix_c;
if (ARCH_ARM)
ff_ac3dsp_init_arm(c, bit_exact);

3
libavcodec/ac3dsp.h
Unescape View File

@ -125,6 +125,9 @@ typedef struct AC3DSPContext {
int (*compute_mantissa_size)(uint16_t mant_cnt[6][16]);
void (*extract_exponents)(uint8_t *exp, int32_t *coef, int nb_coefs);
void (*downmix)(float (*samples)[256], float (*matrix)[2], int out_ch,
int in_ch, int len);
} AC3DSPContext;
void ff_ac3dsp_init (AC3DSPContext *c, int bit_exact);

4
libavcodec/dsputil.c
Unescape View File

@ -36,7 +36,6 @@
#include "mathops.h"
#include "mpegvideo.h"
#include "config.h"
#include "ac3dec.h"
#include "vorbis.h"
uint8_t ff_cropTbl[256 + 2 * MAX_NEG_CROP] = {0, };
@ -2862,9 +2861,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
#if CONFIG_VORBIS_DECODER
c->vorbis_inverse_coupling = ff_vorbis_inverse_coupling;
#endif
#if CONFIG_AC3_DECODER
c->ac3_downmix = ff_ac3_downmix_c;
#endif
c->vector_fmul_reverse = vector_fmul_reverse_c;
c->vector_fmul_add = vector_fmul_add_c;

1
libavcodec/dsputil.h
Unescape View File

@ -374,7 +374,6 @@ typedef struct DSPContext {
/* assume len is a multiple of 4, and arrays are 16-byte aligned */
void (*vorbis_inverse_coupling)(float *mag, float *ang, int blocksize);
void (*ac3_downmix)(float (*samples)[256], float (*matrix)[2], int out_ch, int in_ch, int len);
/* assume len is a multiple of 16, and arrays are 32-byte aligned */
void (*vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len);
/* assume len is a multiple of 8, and src arrays are 16-byte aligned */

119
libavcodec/x86/ac3dsp_init.c
Unescape View File

@ -19,9 +19,11 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "dsputil_mmx.h"
#include "libavcodec/ac3.h"
#include "libavcodec/ac3dsp.h"
extern void ff_ac3_exponent_min_mmx (uint8_t *exp, int num_reuse_blocks, int nb_coefs);
@ -49,6 +51,119 @@ extern void ff_ac3_extract_exponents_3dnow(uint8_t *exp, int32_t *coef, int nb_c
extern void ff_ac3_extract_exponents_sse2 (uint8_t *exp, int32_t *coef, int nb_coefs);
extern void ff_ac3_extract_exponents_ssse3(uint8_t *exp, int32_t *coef, int nb_coefs);
#if HAVE_SSE_INLINE
#define IF1(x) x
#define IF0(x)
#define MIX5(mono, stereo) \
__asm__ volatile ( \
"movss 0(%2), %%xmm5 \n" \
"movss 8(%2), %%xmm6 \n" \
"movss 24(%2), %%xmm7 \n" \
"shufps $0, %%xmm5, %%xmm5 \n" \
"shufps $0, %%xmm6, %%xmm6 \n" \
"shufps $0, %%xmm7, %%xmm7 \n" \
"1: \n" \
"movaps (%0, %1), %%xmm0 \n" \
"movaps 0x400(%0, %1), %%xmm1 \n" \
"movaps 0x800(%0, %1), %%xmm2 \n" \
"movaps 0xc00(%0, %1), %%xmm3 \n" \
"movaps 0x1000(%0, %1), %%xmm4 \n" \
"mulps %%xmm5, %%xmm0 \n" \
"mulps %%xmm6, %%xmm1 \n" \
"mulps %%xmm5, %%xmm2 \n" \
"mulps %%xmm7, %%xmm3 \n" \
"mulps %%xmm7, %%xmm4 \n" \
stereo("addps %%xmm1, %%xmm0 \n") \
"addps %%xmm1, %%xmm2 \n" \
"addps %%xmm3, %%xmm0 \n" \
"addps %%xmm4, %%xmm2 \n" \
mono("addps %%xmm2, %%xmm0 \n") \
"movaps %%xmm0, (%0, %1) \n" \
stereo("movaps %%xmm2, 0x400(%0, %1) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i) \
: "r"(samples[0] + len), "r"(matrix) \
: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", \
"%xmm4", "%xmm5", "%xmm6", "%xmm7",) \
"memory" \
);
#define MIX_MISC(stereo) \
__asm__ volatile ( \
"1: \n" \
"movaps (%3, %0), %%xmm0 \n" \
stereo("movaps %%xmm0, %%xmm1 \n") \
"mulps %%xmm4, %%xmm0 \n" \
stereo("mulps %%xmm5, %%xmm1 \n") \
"lea 1024(%3, %0), %1 \n" \
"mov %5, %2 \n" \
"2: \n" \
"movaps (%1), %%xmm2 \n" \
stereo("movaps %%xmm2, %%xmm3 \n") \
"mulps (%4, %2), %%xmm2 \n" \
stereo("mulps 16(%4, %2), %%xmm3 \n") \
"addps %%xmm2, %%xmm0 \n" \
stereo("addps %%xmm3, %%xmm1 \n") \
"add $1024, %1 \n" \
"add $32, %2 \n" \
"jl 2b \n" \
"movaps %%xmm0, (%3, %0) \n" \
stereo("movaps %%xmm1, 1024(%3, %0) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i), "=&r"(j), "=&r"(k) \
: "r"(samples[0] + len), "r"(matrix_simd + in_ch), \
"g"((intptr_t) - 32 * (in_ch - 1)) \
: "memory" \
);
static void ac3_downmix_sse(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int (*matrix_cmp)[2] = (int(*)[2])matrix;
intptr_t i, j, k;
i = -len * sizeof(float);
if (in_ch == 5 && out_ch == 2 &&
!(matrix_cmp[0][1] | matrix_cmp[2][0] |
matrix_cmp[3][1] | matrix_cmp[4][0] |
(matrix_cmp[1][0] ^ matrix_cmp[1][1]) |
(matrix_cmp[0][0] ^ matrix_cmp[2][1]))) {
MIX5(IF0, IF1);
} else if (in_ch == 5 && out_ch == 1 &&
matrix_cmp[0][0] == matrix_cmp[2][0] &&
matrix_cmp[3][0] == matrix_cmp[4][0]) {
MIX5(IF1, IF0);
} else {
DECLARE_ALIGNED(16, float, matrix_simd)[AC3_MAX_CHANNELS][2][4];
j = 2 * in_ch * sizeof(float);
__asm__ volatile (
"1: \n"
"sub $8, %0 \n"
"movss (%2, %0), %%xmm4 \n"
"movss 4(%2, %0), %%xmm5 \n"
"shufps $0, %%xmm4, %%xmm4 \n"
"shufps $0, %%xmm5, %%xmm5 \n"
"movaps %%xmm4, (%1, %0, 4) \n"
"movaps %%xmm5, 16(%1, %0, 4) \n"
"jg 1b \n"
: "+&r"(j)
: "r"(matrix_simd), "r"(matrix)
: "memory"
);
if (out_ch == 2) {
MIX_MISC(IF1);
} else {
MIX_MISC(IF0);
}
}
}
#endif /* HAVE_SSE_INLINE */
av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact)
{
int mm_flags = av_get_cpu_flags();
@ -89,4 +204,8 @@ av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c, int bit_exact)
c->extract_exponents = ff_ac3_extract_exponents_ssse3;
}
}
if (INLINE_SSE(mm_flags)) {
c->downmix = ac3_downmix_sse;
}
}

111
libavcodec/x86/dsputil_mmx.c
Unescape View File

@ -28,7 +28,6 @@
#include "libavcodec/h264dsp.h"
#include "libavcodec/mpegvideo.h"
#include "libavcodec/simple_idct.h"
#include "libavcodec/ac3dec.h"
#include "dsputil_mmx.h"
#include "idct_xvid.h"
@ -2248,115 +2247,6 @@ static void vorbis_inverse_coupling_sse(float *mag, float *ang, int blocksize)
}
}
#define IF1(x) x
#define IF0(x)
#define MIX5(mono, stereo) \
__asm__ volatile ( \
"movss 0(%2), %%xmm5 \n" \
"movss 8(%2), %%xmm6 \n" \
"movss 24(%2), %%xmm7 \n" \
"shufps $0, %%xmm5, %%xmm5 \n" \
"shufps $0, %%xmm6, %%xmm6 \n" \
"shufps $0, %%xmm7, %%xmm7 \n" \
"1: \n" \
"movaps (%0, %1), %%xmm0 \n" \
"movaps 0x400(%0, %1), %%xmm1 \n" \
"movaps 0x800(%0, %1), %%xmm2 \n" \
"movaps 0xc00(%0, %1), %%xmm3 \n" \
"movaps 0x1000(%0, %1), %%xmm4 \n" \
"mulps %%xmm5, %%xmm0 \n" \
"mulps %%xmm6, %%xmm1 \n" \
"mulps %%xmm5, %%xmm2 \n" \
"mulps %%xmm7, %%xmm3 \n" \
"mulps %%xmm7, %%xmm4 \n" \
stereo("addps %%xmm1, %%xmm0 \n") \
"addps %%xmm1, %%xmm2 \n" \
"addps %%xmm3, %%xmm0 \n" \
"addps %%xmm4, %%xmm2 \n" \
mono("addps %%xmm2, %%xmm0 \n") \
"movaps %%xmm0, (%0, %1) \n" \
stereo("movaps %%xmm2, 0x400(%0, %1) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i) \
: "r"(samples[0] + len), "r"(matrix) \
: XMM_CLOBBERS("%xmm0", "%xmm1", "%xmm2", "%xmm3", \
"%xmm4", "%xmm5", "%xmm6", "%xmm7",) \
"memory" \
);
#define MIX_MISC(stereo) \
__asm__ volatile ( \
"1: \n" \
"movaps (%3, %0), %%xmm0 \n" \
stereo("movaps %%xmm0, %%xmm1 \n") \
"mulps %%xmm4, %%xmm0 \n" \
stereo("mulps %%xmm5, %%xmm1 \n") \
"lea 1024(%3, %0), %1 \n" \
"mov %5, %2 \n" \
"2: \n" \
"movaps (%1), %%xmm2 \n" \
stereo("movaps %%xmm2, %%xmm3 \n") \
"mulps (%4, %2), %%xmm2 \n" \
stereo("mulps 16(%4, %2), %%xmm3 \n") \
"addps %%xmm2, %%xmm0 \n" \
stereo("addps %%xmm3, %%xmm1 \n") \
"add $1024, %1 \n" \
"add $32, %2 \n" \
"jl 2b \n" \
"movaps %%xmm0, (%3, %0) \n" \
stereo("movaps %%xmm1, 1024(%3, %0) \n") \
"add $16, %0 \n" \
"jl 1b \n" \
: "+&r"(i), "=&r"(j), "=&r"(k) \
: "r"(samples[0] + len), "r"(matrix_simd + in_ch), \
"g"((intptr_t) - 32 * (in_ch - 1)) \
: "memory" \
);
static void ac3_downmix_sse(float (*samples)[256], float (*matrix)[2],
int out_ch, int in_ch, int len)
{
int (*matrix_cmp)[2] = (int(*)[2])matrix;
intptr_t i, j, k;
i = -len * sizeof(float);
if (in_ch == 5 && out_ch == 2 &&
!(matrix_cmp[0][1] | matrix_cmp[2][0] |
matrix_cmp[3][1] | matrix_cmp[4][0] |
(matrix_cmp[1][0] ^ matrix_cmp[1][1]) |
(matrix_cmp[0][0] ^ matrix_cmp[2][1]))) {
MIX5(IF0, IF1);
} else if (in_ch == 5 && out_ch == 1 &&
matrix_cmp[0][0] == matrix_cmp[2][0] &&
matrix_cmp[3][0] == matrix_cmp[4][0]) {
MIX5(IF1, IF0);
} else {
DECLARE_ALIGNED(16, float, matrix_simd)[AC3_MAX_CHANNELS][2][4];
j = 2 * in_ch * sizeof(float);
__asm__ volatile (
"1: \n"
"sub $8, %0 \n"
"movss (%2, %0), %%xmm4 \n"
"movss 4(%2, %0), %%xmm5 \n"
"shufps $0, %%xmm4, %%xmm4 \n"
"shufps $0, %%xmm5, %%xmm5 \n"
"movaps %%xmm4, (%1, %0, 4) \n"
"movaps %%xmm5, 16(%1, %0, 4) \n"
"jg 1b \n"
: "+&r"(j)
: "r"(matrix_simd), "r"(matrix)
: "memory"
);
if (out_ch == 2) {
MIX_MISC(IF1);
} else {
MIX_MISC(IF0);
}
}
}
#if HAVE_6REGS
static void vector_fmul_window_3dnowext(float *dst, const float *src0,
const float *src1, const float *win,
@ -2849,7 +2739,6 @@ static void dsputil_init_sse(DSPContext *c, AVCodecContext *avctx, int mm_flags)
}
c->vorbis_inverse_coupling = vorbis_inverse_coupling_sse;
c->ac3_downmix = ac3_downmix_sse;
#if HAVE_6REGS
c->vector_fmul_window = vector_fmul_window_sse;

Write Preview
Loading…
Cancel
Save