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00023 #include "libavcodec/avcodec.h"
00024 #include "libavcodec/dsputil.h"
00025 #include "libavcodec/mpegvideo.h"
00026 #include "dsputil_bfin.h"
00027
00028
00029 void ff_bfin_fdct (DCTELEM *block) attribute_l1_text;
00030
00031
00032 static int dct_quantize_bfin (MpegEncContext *s,
00033 DCTELEM *block, int n,
00034 int qscale, int *overflow)
00035 {
00036 int last_non_zero, q, start_i;
00037 const short *qmat;
00038 short *bias;
00039 const uint8_t *scantable= s->intra_scantable.scantable;
00040 short dc;
00041 int max=0;
00042
00043 PROF("fdct",0);
00044 ff_bfin_fdct (block);
00045 EPROF();
00046
00047 PROF("denoise",1);
00048 if(s->dct_error_sum)
00049 s->denoise_dct(s, block);
00050 EPROF();
00051
00052 PROF("quant-init",2);
00053 if (s->mb_intra) {
00054 if (!s->h263_aic) {
00055 if (n < 4)
00056 q = s->y_dc_scale;
00057 else
00058 q = s->c_dc_scale;
00059 q = q << 3;
00060 } else
00061
00062 q = 1 << 3;
00063
00064
00065 dc = block[0] = (block[0] + (q >> 1)) / q;
00066 start_i = 1;
00067 last_non_zero = 0;
00068 bias = s->q_intra_matrix16[qscale][1];
00069 qmat = s->q_intra_matrix16[qscale][0];
00070
00071 } else {
00072 start_i = 0;
00073 last_non_zero = -1;
00074 bias = s->q_inter_matrix16[qscale][1];
00075 qmat = s->q_inter_matrix16[qscale][0];
00076
00077 }
00078 EPROF();
00079
00080 PROF("quantize",4);
00081
00082
00083
00084
00085
00086
00087
00088
00089
00090
00091 __asm__ volatile
00092 ("i2=%1;\n\t"
00093 "r1=[%1++]; \n\t"
00094 "r0=r1>>>15 (v); \n\t"
00095 "lsetup (0f,1f) lc0=%3; \n\t"
00096 "0: r0=r0|%4; \n\t"
00097 " r1=abs r1 (v) || r2=[%2++];\n\t"
00098 " r1=r1+|+%5; \n\t"
00099 " r1=max(r1,%6) (v); \n\t"
00100 " r1.h=(a1 =r1.h*r2.h), r1.l=(a0 =r1.l*r2.l) (tfu); \n\t"
00101 " %0=%0|r1; \n\t"
00102 " r0.h=(a1 =r1.h*r0.h), r0.l=(a0 =r1.l*r0.l) (is) || r1=[%1++];\n\t"
00103 "1: r0=r1>>>15 (v) || [i2++]=r0;\n\t"
00104 "r1=%0>>16; \n\t"
00105 "%0=%0|r1; \n\t"
00106 "%0.h=0; \n\t"
00107 : "=&d" (max)
00108 : "b" (block), "b" (qmat), "a" (32), "d" (0x00010001), "d" (bias[0]*0x10001), "d" (0)
00109 : "R0","R1","R2", "I2");
00110 if (start_i == 1) block[0] = dc;
00111
00112 EPROF();
00113
00114
00115 PROF("zzscan",5);
00116
00117 __asm__ volatile
00118 ("r0=b[%1--] (x); \n\t"
00119 "lsetup (0f,1f) lc0=%3; \n\t"
00120 "0: p0=r0; \n\t"
00121 " p0=%2+(p0<<1); \n\t"
00122 " r0=w[p0]; \n\t"
00123 " cc=r0==0; \n\t"
00124 " if !cc jump 2f; \n\t"
00125 "1: r0=b[%1--] (x); \n\t"
00126 " %0=%4; \n\t"
00127 " jump 3f; \n\t"
00128 "2: %0=lc0; \n\t"
00129 "3:\n\t"
00130
00131 : "=d" (last_non_zero)
00132 : "a" (scantable+63), "a" (block), "a" (63), "d" (last_non_zero)
00133 : "P0","R0");
00134
00135 EPROF();
00136
00137 *overflow= s->max_qcoeff < max;
00138
00139 bfprof();
00140
00141
00142 if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
00143 ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
00144
00145 return last_non_zero;
00146 }
00147
00148 void MPV_common_init_bfin (MpegEncContext *s)
00149 {
00150 s->dct_quantize= dct_quantize_bfin;
00151 }
00152