mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
aacps: move some loops to function pointers
Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard
parent
2ed503af9f
commit
bf1945af30
@ -53,7 +53,7 @@ OBJS-$(CONFIG_A64MULTI_ENCODER) += a64multienc.o elbg.o
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OBJS-$(CONFIG_A64MULTI5_ENCODER) += a64multienc.o elbg.o
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OBJS-$(CONFIG_AAC_DECODER) += aacdec.o aactab.o aacsbr.o aacps.o \
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aacadtsdec.o mpeg4audio.o kbdwin.o \
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sbrdsp.o
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sbrdsp.o aacpsdsp.o
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OBJS-$(CONFIG_AAC_ENCODER) += aacenc.o aaccoder.o \
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aacpsy.o aactab.o \
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psymodel.o iirfilter.o \
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@ -304,26 +304,14 @@ static void hybrid2_re(float (*in)[2], float (*out)[32][2], const float filter[7
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}
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/** Split one subband into 6 subsubbands with a complex filter */
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static void hybrid6_cx(float (*in)[2], float (*out)[32][2], const float (*filter)[7][2], int len)
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static void hybrid6_cx(PSDSPContext *dsp, float (*in)[2], float (*out)[32][2], const float (*filter)[7][2], int len)
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{
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int i, j, ssb;
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int i;
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int N = 8;
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float temp[8][2];
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for (i = 0; i < len; i++, in++) {
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for (ssb = 0; ssb < N; ssb++) {
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float sum_re = filter[ssb][6][0] * in[6][0], sum_im = filter[ssb][6][0] * in[6][1];
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for (j = 0; j < 6; j++) {
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float in0_re = in[j][0];
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float in0_im = in[j][1];
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float in1_re = in[12-j][0];
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float in1_im = in[12-j][1];
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sum_re += filter[ssb][j][0] * (in0_re + in1_re) - filter[ssb][j][1] * (in0_im - in1_im);
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sum_im += filter[ssb][j][0] * (in0_im + in1_im) + filter[ssb][j][1] * (in0_re - in1_re);
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}
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temp[ssb][0] = sum_re;
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temp[ssb][1] = sum_im;
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}
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dsp->hybrid_analysis(temp, in, filter, 1, N);
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out[0][i][0] = temp[6][0];
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out[0][i][1] = temp[6][1];
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out[1][i][0] = temp[7][0];
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@ -339,28 +327,18 @@ static void hybrid6_cx(float (*in)[2], float (*out)[32][2], const float (*filter
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}
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}
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static void hybrid4_8_12_cx(float (*in)[2], float (*out)[32][2], const float (*filter)[7][2], int N, int len)
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static void hybrid4_8_12_cx(PSDSPContext *dsp, float (*in)[2], float (*out)[32][2], const float (*filter)[7][2], int N, int len)
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{
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int i, j, ssb;
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int i;
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for (i = 0; i < len; i++, in++) {
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for (ssb = 0; ssb < N; ssb++) {
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float sum_re = filter[ssb][6][0] * in[6][0], sum_im = filter[ssb][6][0] * in[6][1];
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for (j = 0; j < 6; j++) {
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float in0_re = in[j][0];
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float in0_im = in[j][1];
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float in1_re = in[12-j][0];
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float in1_im = in[12-j][1];
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sum_re += filter[ssb][j][0] * (in0_re + in1_re) - filter[ssb][j][1] * (in0_im - in1_im);
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sum_im += filter[ssb][j][0] * (in0_im + in1_im) + filter[ssb][j][1] * (in0_re - in1_re);
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}
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out[ssb][i][0] = sum_re;
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out[ssb][i][1] = sum_im;
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}
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dsp->hybrid_analysis(out[0] + i, in, filter, 32, N);
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}
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}
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static void hybrid_analysis(float out[91][32][2], float in[5][44][2], float L[2][38][64], int is34, int len)
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static void hybrid_analysis(PSDSPContext *dsp, float out[91][32][2],
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float in[5][44][2], float L[2][38][64],
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int is34, int len)
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{
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int i, j;
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for (i = 0; i < 5; i++) {
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@ -370,27 +348,17 @@ static void hybrid_analysis(float out[91][32][2], float in[5][44][2], float L[2]
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}
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}
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if (is34) {
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hybrid4_8_12_cx(in[0], out, f34_0_12, 12, len);
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hybrid4_8_12_cx(in[1], out+12, f34_1_8, 8, len);
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hybrid4_8_12_cx(in[2], out+20, f34_2_4, 4, len);
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hybrid4_8_12_cx(in[3], out+24, f34_2_4, 4, len);
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hybrid4_8_12_cx(in[4], out+28, f34_2_4, 4, len);
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for (i = 0; i < 59; i++) {
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for (j = 0; j < len; j++) {
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out[i+32][j][0] = L[0][j][i+5];
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out[i+32][j][1] = L[1][j][i+5];
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}
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}
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hybrid4_8_12_cx(dsp, in[0], out, f34_0_12, 12, len);
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hybrid4_8_12_cx(dsp, in[1], out+12, f34_1_8, 8, len);
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hybrid4_8_12_cx(dsp, in[2], out+20, f34_2_4, 4, len);
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hybrid4_8_12_cx(dsp, in[3], out+24, f34_2_4, 4, len);
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hybrid4_8_12_cx(dsp, in[4], out+28, f34_2_4, 4, len);
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dsp->hybrid_analysis_ileave(out + 27, L, 5, len);
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} else {
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hybrid6_cx(in[0], out, f20_0_8, len);
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hybrid6_cx(dsp, in[0], out, f20_0_8, len);
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hybrid2_re(in[1], out+6, g1_Q2, len, 1);
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hybrid2_re(in[2], out+8, g1_Q2, len, 0);
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for (i = 0; i < 61; i++) {
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for (j = 0; j < len; j++) {
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out[i+10][j][0] = L[0][j][i+3];
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out[i+10][j][1] = L[1][j][i+3];
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}
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}
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dsp->hybrid_analysis_ileave(out + 7, L, 3, len);
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}
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//update in_buf
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for (i = 0; i < 5; i++) {
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@ -398,7 +366,8 @@ static void hybrid_analysis(float out[91][32][2], float in[5][44][2], float L[2]
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}
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}
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static void hybrid_synthesis(float out[2][38][64], float in[91][32][2], int is34, int len)
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static void hybrid_synthesis(PSDSPContext *dsp, float out[2][38][64],
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float in[91][32][2], int is34, int len)
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{
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int i, n;
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if (is34) {
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@ -422,12 +391,7 @@ static void hybrid_synthesis(float out[2][38][64], float in[91][32][2], int is34
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out[1][n][4] += in[28+i][n][1];
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}
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}
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for (i = 0; i < 59; i++) {
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for (n = 0; n < len; n++) {
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out[0][n][i+5] = in[i+32][n][0];
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out[1][n][i+5] = in[i+32][n][1];
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}
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}
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dsp->hybrid_synthesis_deint(out, in + 27, 5, len);
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} else {
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for (n = 0; n < len; n++) {
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out[0][n][0] = in[0][n][0] + in[1][n][0] + in[2][n][0] +
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@ -439,12 +403,7 @@ static void hybrid_synthesis(float out[2][38][64], float in[91][32][2], int is34
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out[0][n][2] = in[8][n][0] + in[9][n][0];
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out[1][n][2] = in[8][n][1] + in[9][n][1];
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}
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for (i = 0; i < 61; i++) {
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for (n = 0; n < len; n++) {
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out[0][n][i+3] = in[i+10][n][0];
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out[1][n][i+3] = in[i+10][n][1];
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}
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}
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dsp->hybrid_synthesis_deint(out, in + 7, 3, len);
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}
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}
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@ -661,10 +620,6 @@ static void decorrelation(PSContext *ps, float (*out)[32][2], const float (*s)[3
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const float a_smooth = 0.25f; ///< Smoothing coefficient
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int i, k, m, n;
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int n0 = 0, nL = 32;
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static const int link_delay[] = { 3, 4, 5 };
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static const float a[] = { 0.65143905753106f,
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0.56471812200776f,
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0.48954165955695f };
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if (is34 != ps->is34bands_old) {
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memset(ps->peak_decay_nrg, 0, sizeof(ps->peak_decay_nrg));
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@ -674,11 +629,9 @@ static void decorrelation(PSContext *ps, float (*out)[32][2], const float (*s)[3
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memset(ps->ap_delay, 0, sizeof(ps->ap_delay));
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}
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for (n = n0; n < nL; n++) {
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for (k = 0; k < NR_BANDS[is34]; k++) {
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int i = k_to_i[k];
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power[i][n] += s[k][n][0] * s[k][n][0] + s[k][n][1] * s[k][n][1];
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}
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for (k = 0; k < NR_BANDS[is34]; k++) {
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int i = k_to_i[k];
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ps->dsp.add_squares(power[i], s[k], nL - n0);
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}
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//Transient detection
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@ -706,54 +659,31 @@ static void decorrelation(PSContext *ps, float (*out)[32][2], const float (*s)[3
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for (k = 0; k < NR_ALLPASS_BANDS[is34]; k++) {
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int b = k_to_i[k];
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float g_decay_slope = 1.f - DECAY_SLOPE * (k - DECAY_CUTOFF[is34]);
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float ag[PS_AP_LINKS];
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g_decay_slope = av_clipf(g_decay_slope, 0.f, 1.f);
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memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
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memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
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for (m = 0; m < PS_AP_LINKS; m++) {
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memcpy(ap_delay[k][m], ap_delay[k][m]+numQMFSlots, 5*sizeof(ap_delay[k][m][0]));
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ag[m] = a[m] * g_decay_slope;
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}
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for (n = n0; n < nL; n++) {
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float in_re = delay[k][n+PS_MAX_DELAY-2][0] * phi_fract[is34][k][0] -
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delay[k][n+PS_MAX_DELAY-2][1] * phi_fract[is34][k][1];
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float in_im = delay[k][n+PS_MAX_DELAY-2][0] * phi_fract[is34][k][1] +
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delay[k][n+PS_MAX_DELAY-2][1] * phi_fract[is34][k][0];
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for (m = 0; m < PS_AP_LINKS; m++) {
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float a_re = ag[m] * in_re;
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float a_im = ag[m] * in_im;
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float link_delay_re = ap_delay[k][m][n+5-link_delay[m]][0];
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float link_delay_im = ap_delay[k][m][n+5-link_delay[m]][1];
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float fractional_delay_re = Q_fract_allpass[is34][k][m][0];
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float fractional_delay_im = Q_fract_allpass[is34][k][m][1];
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ap_delay[k][m][n+5][0] = in_re;
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ap_delay[k][m][n+5][1] = in_im;
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in_re = link_delay_re * fractional_delay_re - link_delay_im * fractional_delay_im - a_re;
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in_im = link_delay_re * fractional_delay_im + link_delay_im * fractional_delay_re - a_im;
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ap_delay[k][m][n+5][0] += ag[m] * in_re;
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ap_delay[k][m][n+5][1] += ag[m] * in_im;
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}
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out[k][n][0] = transient_gain[b][n] * in_re;
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out[k][n][1] = transient_gain[b][n] * in_im;
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}
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ps->dsp.decorrelate(out[k], delay[k] + PS_MAX_DELAY - 2, ap_delay[k],
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phi_fract[is34][k], Q_fract_allpass[is34][k],
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transient_gain[b], g_decay_slope, nL - n0);
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}
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for (; k < SHORT_DELAY_BAND[is34]; k++) {
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int i = k_to_i[k];
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memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
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memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
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for (n = n0; n < nL; n++) {
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//H = delay 14
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out[k][n][0] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-14][0];
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out[k][n][1] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-14][1];
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}
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//H = delay 14
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ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 14,
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transient_gain[i], nL - n0);
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}
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for (; k < NR_BANDS[is34]; k++) {
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int i = k_to_i[k];
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memcpy(delay[k], delay[k]+nL, PS_MAX_DELAY*sizeof(delay[k][0]));
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memcpy(delay[k]+PS_MAX_DELAY, s[k], numQMFSlots*sizeof(delay[k][0]));
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for (n = n0; n < nL; n++) {
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//H = delay 1
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out[k][n][0] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-1][0];
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out[k][n][1] = transient_gain[k_to_i[k]][n] * delay[k][n+PS_MAX_DELAY-1][1];
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}
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//H = delay 1
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ps->dsp.mul_pair_single(out[k], delay[k] + PS_MAX_DELAY - 1,
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transient_gain[i], nL - n0);
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}
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}
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@ -797,7 +727,7 @@ static void remap20(int8_t (**p_par_mapped)[PS_MAX_NR_IIDICC],
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static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2], int is34)
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{
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int e, b, k, n;
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int e, b, k;
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float (*H11)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H11;
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float (*H12)[PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC] = ps->H12;
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@ -909,70 +839,44 @@ static void stereo_processing(PSContext *ps, float (*l)[32][2], float (*r)[32][2
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H22[0][e+1][b] = h22;
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}
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for (k = 0; k < NR_BANDS[is34]; k++) {
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float h11r, h12r, h21r, h22r;
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float h11i, h12i, h21i, h22i;
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float h11r_step, h12r_step, h21r_step, h22r_step;
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float h11i_step, h12i_step, h21i_step, h22i_step;
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float h[2][4];
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float h_step[2][4];
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int start = ps->border_position[e];
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int stop = ps->border_position[e+1];
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float width = 1.f / (stop - start);
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b = k_to_i[k];
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h11r = H11[0][e][b];
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h12r = H12[0][e][b];
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h21r = H21[0][e][b];
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h22r = H22[0][e][b];
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h[0][0] = H11[0][e][b];
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h[0][1] = H12[0][e][b];
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h[0][2] = H21[0][e][b];
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h[0][3] = H22[0][e][b];
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if (!PS_BASELINE && ps->enable_ipdopd) {
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//Is this necessary? ps_04_new seems unchanged
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if ((is34 && k <= 13 && k >= 9) || (!is34 && k <= 1)) {
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h11i = -H11[1][e][b];
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h12i = -H12[1][e][b];
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h21i = -H21[1][e][b];
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h22i = -H22[1][e][b];
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h[1][0] = -H11[1][e][b];
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h[1][1] = -H12[1][e][b];
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h[1][2] = -H21[1][e][b];
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h[1][3] = -H22[1][e][b];
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} else {
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h11i = H11[1][e][b];
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h12i = H12[1][e][b];
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h21i = H21[1][e][b];
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h22i = H22[1][e][b];
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h[1][0] = H11[1][e][b];
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h[1][1] = H12[1][e][b];
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h[1][2] = H21[1][e][b];
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h[1][3] = H22[1][e][b];
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}
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}
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//Interpolation
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h11r_step = (H11[0][e+1][b] - h11r) * width;
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h12r_step = (H12[0][e+1][b] - h12r) * width;
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h21r_step = (H21[0][e+1][b] - h21r) * width;
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h22r_step = (H22[0][e+1][b] - h22r) * width;
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h_step[0][0] = (H11[0][e+1][b] - h[0][0]) * width;
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h_step[0][1] = (H12[0][e+1][b] - h[0][1]) * width;
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h_step[0][2] = (H21[0][e+1][b] - h[0][2]) * width;
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h_step[0][3] = (H22[0][e+1][b] - h[0][3]) * width;
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if (!PS_BASELINE && ps->enable_ipdopd) {
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h11i_step = (H11[1][e+1][b] - h11i) * width;
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h12i_step = (H12[1][e+1][b] - h12i) * width;
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h21i_step = (H21[1][e+1][b] - h21i) * width;
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h22i_step = (H22[1][e+1][b] - h22i) * width;
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}
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for (n = start + 1; n <= stop; n++) {
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//l is s, r is d
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float l_re = l[k][n][0];
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float l_im = l[k][n][1];
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float r_re = r[k][n][0];
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float r_im = r[k][n][1];
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h11r += h11r_step;
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h12r += h12r_step;
|
||||
h21r += h21r_step;
|
||||
h22r += h22r_step;
|
||||
if (!PS_BASELINE && ps->enable_ipdopd) {
|
||||
h11i += h11i_step;
|
||||
h12i += h12i_step;
|
||||
h21i += h21i_step;
|
||||
h22i += h22i_step;
|
||||
|
||||
l[k][n][0] = h11r*l_re + h21r*r_re - h11i*l_im - h21i*r_im;
|
||||
l[k][n][1] = h11r*l_im + h21r*r_im + h11i*l_re + h21i*r_re;
|
||||
r[k][n][0] = h12r*l_re + h22r*r_re - h12i*l_im - h22i*r_im;
|
||||
r[k][n][1] = h12r*l_im + h22r*r_im + h12i*l_re + h22i*r_re;
|
||||
} else {
|
||||
l[k][n][0] = h11r*l_re + h21r*r_re;
|
||||
l[k][n][1] = h11r*l_im + h21r*r_im;
|
||||
r[k][n][0] = h12r*l_re + h22r*r_re;
|
||||
r[k][n][1] = h12r*l_im + h22r*r_im;
|
||||
}
|
||||
h_step[1][0] = (H11[1][e+1][b] - h[1][0]) * width;
|
||||
h_step[1][1] = (H12[1][e+1][b] - h[1][1]) * width;
|
||||
h_step[1][2] = (H21[1][e+1][b] - h[1][2]) * width;
|
||||
h_step[1][3] = (H22[1][e+1][b] - h[1][3]) * width;
|
||||
}
|
||||
ps->dsp.stereo_interpolate[!PS_BASELINE && ps->enable_ipdopd](
|
||||
l[k] + start + 1, r[k] + start + 1,
|
||||
h, h_step, stop - start);
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -989,11 +893,11 @@ int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float
|
||||
if (top < NR_ALLPASS_BANDS[is34])
|
||||
memset(ps->ap_delay + top, 0, (NR_ALLPASS_BANDS[is34] - top)*sizeof(ps->ap_delay[0]));
|
||||
|
||||
hybrid_analysis(Lbuf, ps->in_buf, L, is34, len);
|
||||
hybrid_analysis(&ps->dsp, Lbuf, ps->in_buf, L, is34, len);
|
||||
decorrelation(ps, Rbuf, Lbuf, is34);
|
||||
stereo_processing(ps, Lbuf, Rbuf, is34);
|
||||
hybrid_synthesis(L, Lbuf, is34, len);
|
||||
hybrid_synthesis(R, Rbuf, is34, len);
|
||||
hybrid_synthesis(&ps->dsp, L, Lbuf, is34, len);
|
||||
hybrid_synthesis(&ps->dsp, R, Rbuf, is34, len);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1041,4 +945,5 @@ av_cold void ff_ps_init(void) {
|
||||
|
||||
av_cold void ff_ps_ctx_init(PSContext *ps)
|
||||
{
|
||||
ff_psdsp_init(&ps->dsp);
|
||||
}
|
||||
|
||||
@ -24,6 +24,7 @@
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include "aacpsdsp.h"
|
||||
#include "avcodec.h"
|
||||
#include "get_bits.h"
|
||||
|
||||
@ -72,6 +73,7 @@ typedef struct {
|
||||
float H22[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC];
|
||||
int8_t opd_hist[PS_MAX_NR_IIDICC];
|
||||
int8_t ipd_hist[PS_MAX_NR_IIDICC];
|
||||
PSDSPContext dsp;
|
||||
} PSContext;
|
||||
|
||||
void ff_ps_init(void);
|
||||
|
||||
211
libavcodec/aacpsdsp.c
Normal file
211
libavcodec/aacpsdsp.c
Normal file
@ -0,0 +1,211 @@
|
||||
/*
|
||||
* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
|
||||
*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav 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.
|
||||
*
|
||||
* Libav 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 Libav; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
#include "libavutil/attributes.h"
|
||||
#include "aacpsdsp.h"
|
||||
|
||||
static void ps_add_squares_c(float *dst, const float (*src)[2], int n)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < n; i++)
|
||||
dst[i] += src[i][0] * src[i][0] + src[i][1] * src[i][1];
|
||||
}
|
||||
|
||||
static void ps_mul_pair_single_c(float (*dst)[2], float (*src0)[2], float *src1,
|
||||
int n)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < n; i++) {
|
||||
dst[i][0] = src0[i][0] * src1[i];
|
||||
dst[i][1] = src0[i][1] * src1[i];
|
||||
}
|
||||
}
|
||||
|
||||
static void ps_hybrid_analysis_c(float (*out)[2], float (*in)[2],
|
||||
const float (*filter)[7][2],
|
||||
int stride, int n)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
for (i = 0; i < n; i++) {
|
||||
float sum_re = filter[i][6][0] * in[6][0];
|
||||
float sum_im = filter[i][6][0] * in[6][1];
|
||||
|
||||
for (j = 0; j < 6; j++) {
|
||||
float in0_re = in[j][0];
|
||||
float in0_im = in[j][1];
|
||||
float in1_re = in[12-j][0];
|
||||
float in1_im = in[12-j][1];
|
||||
sum_re += filter[i][j][0] * (in0_re + in1_re) -
|
||||
filter[i][j][1] * (in0_im - in1_im);
|
||||
sum_im += filter[i][j][0] * (in0_im + in1_im) +
|
||||
filter[i][j][1] * (in0_re - in1_re);
|
||||
}
|
||||
out[i * stride][0] = sum_re;
|
||||
out[i * stride][1] = sum_im;
|
||||
}
|
||||
}
|
||||
|
||||
static void ps_hybrid_analysis_ileave_c(float (*out)[32][2], float L[2][38][64],
|
||||
int i, int len)
|
||||
{
|
||||
int j;
|
||||
|
||||
for (; i < 64; i++) {
|
||||
for (j = 0; j < len; j++) {
|
||||
out[i][j][0] = L[0][j][i];
|
||||
out[i][j][1] = L[1][j][i];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void ps_hybrid_synthesis_deint_c(float out[2][38][64],
|
||||
float (*in)[32][2],
|
||||
int i, int len)
|
||||
{
|
||||
int n;
|
||||
|
||||
for (; i < 64; i++) {
|
||||
for (n = 0; n < len; n++) {
|
||||
out[0][n][i] = in[i][n][0];
|
||||
out[1][n][i] = in[i][n][1];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void ps_decorrelate_c(float (*out)[2], float (*delay)[2],
|
||||
float (*ap_delay)[PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2],
|
||||
const float phi_fract[2], float (*Q_fract)[2],
|
||||
const float *transient_gain,
|
||||
float g_decay_slope,
|
||||
int len)
|
||||
{
|
||||
static const float a[] = { 0.65143905753106f,
|
||||
0.56471812200776f,
|
||||
0.48954165955695f };
|
||||
float ag[PS_AP_LINKS];
|
||||
int m, n;
|
||||
|
||||
for (m = 0; m < PS_AP_LINKS; m++)
|
||||
ag[m] = a[m] * g_decay_slope;
|
||||
|
||||
for (n = 0; n < len; n++) {
|
||||
float in_re = delay[n][0] * phi_fract[0] - delay[n][1] * phi_fract[1];
|
||||
float in_im = delay[n][0] * phi_fract[1] + delay[n][1] * phi_fract[0];
|
||||
for (m = 0; m < PS_AP_LINKS; m++) {
|
||||
float a_re = ag[m] * in_re;
|
||||
float a_im = ag[m] * in_im;
|
||||
float link_delay_re = ap_delay[m][n+2-m][0];
|
||||
float link_delay_im = ap_delay[m][n+2-m][1];
|
||||
float fractional_delay_re = Q_fract[m][0];
|
||||
float fractional_delay_im = Q_fract[m][1];
|
||||
float apd_re = in_re;
|
||||
float apd_im = in_im;
|
||||
in_re = link_delay_re * fractional_delay_re -
|
||||
link_delay_im * fractional_delay_im - a_re;
|
||||
in_im = link_delay_re * fractional_delay_im +
|
||||
link_delay_im * fractional_delay_re - a_im;
|
||||
ap_delay[m][n+5][0] = apd_re + ag[m] * in_re;
|
||||
ap_delay[m][n+5][1] = apd_im + ag[m] * in_im;
|
||||
}
|
||||
out[n][0] = transient_gain[n] * in_re;
|
||||
out[n][1] = transient_gain[n] * in_im;
|
||||
}
|
||||
}
|
||||
|
||||
static void ps_stereo_interpolate_c(float (*l)[2], float (*r)[2],
|
||||
float h[2][4], float h_step[2][4],
|
||||
int len)
|
||||
{
|
||||
float h0 = h[0][0];
|
||||
float h1 = h[0][1];
|
||||
float h2 = h[0][2];
|
||||
float h3 = h[0][3];
|
||||
float hs0 = h_step[0][0];
|
||||
float hs1 = h_step[0][1];
|
||||
float hs2 = h_step[0][2];
|
||||
float hs3 = h_step[0][3];
|
||||
int n;
|
||||
|
||||
for (n = 0; n < len; n++) {
|
||||
//l is s, r is d
|
||||
float l_re = l[n][0];
|
||||
float l_im = l[n][1];
|
||||
float r_re = r[n][0];
|
||||
float r_im = r[n][1];
|
||||
h0 += hs0;
|
||||
h1 += hs1;
|
||||
h2 += hs2;
|
||||
h3 += hs3;
|
||||
l[n][0] = h0 * l_re + h2 * r_re;
|
||||
l[n][1] = h0 * l_im + h2 * r_im;
|
||||
r[n][0] = h1 * l_re + h3 * r_re;
|
||||
r[n][1] = h1 * l_im + h3 * r_im;
|
||||
}
|
||||
}
|
||||
|
||||
static void ps_stereo_interpolate_ipdopd_c(float (*l)[2], float (*r)[2],
|
||||
float h[2][4], float h_step[2][4],
|
||||
int len)
|
||||
{
|
||||
float h00 = h[0][0], h10 = h[1][0];
|
||||
float h01 = h[0][1], h11 = h[1][1];
|
||||
float h02 = h[0][2], h12 = h[1][2];
|
||||
float h03 = h[0][3], h13 = h[1][3];
|
||||
float hs00 = h_step[0][0], hs10 = h_step[1][0];
|
||||
float hs01 = h_step[0][1], hs11 = h_step[1][1];
|
||||
float hs02 = h_step[0][2], hs12 = h_step[1][2];
|
||||
float hs03 = h_step[0][3], hs13 = h_step[1][3];
|
||||
int n;
|
||||
|
||||
for (n = 0; n < len; n++) {
|
||||
//l is s, r is d
|
||||
float l_re = l[n][0];
|
||||
float l_im = l[n][1];
|
||||
float r_re = r[n][0];
|
||||
float r_im = r[n][1];
|
||||
h00 += hs00;
|
||||
h01 += hs01;
|
||||
h02 += hs02;
|
||||
h03 += hs03;
|
||||
h10 += hs10;
|
||||
h11 += hs11;
|
||||
h12 += hs12;
|
||||
h13 += hs13;
|
||||
|
||||
l[n][0] = h00 * l_re + h02 * r_re - h10 * l_im - h12 * r_im;
|
||||
l[n][1] = h00 * l_im + h02 * r_im + h10 * l_re + h12 * r_re;
|
||||
r[n][0] = h01 * l_re + h03 * r_re - h11 * l_im - h13 * r_im;
|
||||
r[n][1] = h01 * l_im + h03 * r_im + h11 * l_re + h13 * r_re;
|
||||
}
|
||||
}
|
||||
|
||||
av_cold void ff_psdsp_init(PSDSPContext *s)
|
||||
{
|
||||
s->add_squares = ps_add_squares_c;
|
||||
s->mul_pair_single = ps_mul_pair_single_c;
|
||||
s->hybrid_analysis = ps_hybrid_analysis_c;
|
||||
s->hybrid_analysis_ileave = ps_hybrid_analysis_ileave_c;
|
||||
s->hybrid_synthesis_deint = ps_hybrid_synthesis_deint_c;
|
||||
s->decorrelate = ps_decorrelate_c;
|
||||
s->stereo_interpolate[0] = ps_stereo_interpolate_c;
|
||||
s->stereo_interpolate[1] = ps_stereo_interpolate_ipdopd_c;
|
||||
}
|
||||
52
libavcodec/aacpsdsp.h
Normal file
52
libavcodec/aacpsdsp.h
Normal file
@ -0,0 +1,52 @@
|
||||
/*
|
||||
* Copyright (c) 2012 Mans Rullgard
|
||||
*
|
||||
* This file is part of Libav.
|
||||
*
|
||||
* Libav 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.
|
||||
*
|
||||
* Libav 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 Libav; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifndef LIBAVCODEC_AACPSDSP_H
|
||||
#define LIBAVCODEC_AACPSDSP_H
|
||||
|
||||
#define PS_QMF_TIME_SLOTS 32
|
||||
#define PS_AP_LINKS 3
|
||||
#define PS_MAX_AP_DELAY 5
|
||||
|
||||
typedef struct PSDSPContext {
|
||||
void (*add_squares)(float *dst, const float (*src)[2], int n);
|
||||
void (*mul_pair_single)(float (*dst)[2], float (*src0)[2], float *src1,
|
||||
int n);
|
||||
void (*hybrid_analysis)(float (*out)[2], float (*in)[2],
|
||||
const float (*filter)[7][2],
|
||||
int stride, int n);
|
||||
void (*hybrid_analysis_ileave)(float (*out)[32][2], float L[2][38][64],
|
||||
int i, int len);
|
||||
void (*hybrid_synthesis_deint)(float out[2][38][64], float (*in)[32][2],
|
||||
int i, int len);
|
||||
void (*decorrelate)(float (*out)[2], float (*delay)[2],
|
||||
float (*ap_delay)[PS_QMF_TIME_SLOTS+PS_MAX_AP_DELAY][2],
|
||||
const float phi_fract[2], float (*Q_fract)[2],
|
||||
const float *transient_gain,
|
||||
float g_decay_slope,
|
||||
int len);
|
||||
void (*stereo_interpolate[2])(float (*l)[2], float (*r)[2],
|
||||
float h[2][4], float h_step[2][4],
|
||||
int len);
|
||||
} PSDSPContext;
|
||||
|
||||
void ff_psdsp_init(PSDSPContext *s);
|
||||
|
||||
#endif /* LIBAVCODEC_AACPSDSP_H */
|
||||
Loading…
Reference in New Issue
Block a user